JPH0145333B2 - - Google Patents

Description

[Detailed description of the invention]

This invention allows for self-propelled plants to be planted in the field while moving on their own within the field.
The harvested grain culms are harvested, and the harvested grain culms are threshed.
At the same time, sorting for grain removal is carried out.
A so-called combine type self-propelled harvester,
It is related to More specifically, this invention
Grain loss and power consumption are each excessive.
This ensures that stable machine operation is achieved without
while increasing the degree of sorting in grain removal to an appropriately high level.
A new control mechanism to maintain control
This relates to the self-propelled harvesting machine that is equipped. Harvesting using a self-propelled harvester of the type mentioned at the beginning
During operation, the operation of the harvester is determined by the maturity of the crop.
degree, length, lodging degree, moisture content, and field condition
It is governed by a number of factors such as climate, crop type, etc.
And, of course, during such harvesting operations,
is a highly accurate harvest crop with less grain loss.
It is desirable that the work be carried out, and on the other hand,
Harvesting speed within a range that does not overload each part of the machine.
is maximized and highly efficient harvesting work is carried out.
This is desirable. Such high harvest precision and high yield
While satisfying mutually contradictory demands such as efficiency,
Harvesting with self-propelled harvesters is economically viable.
This is difficult even for experienced workers, and
The effort to do so requires significant mental and physical fatigue.
cause labor. For this reason, it is already affecting each part of the self-propelled harvester.
Detect the load or grain loss, and use the detected value.
Depending on the vehicle speed of the harvester and the drive of various work devices of the harvester,
Adjust the dynamic rotation speed etc. so that appropriate working conditions can be obtained.
Several mechanisms have been proposed to automatically control
ing. However, conventionally proposed automatic
The control mechanism is biased toward either harvesting accuracy or harvesting efficiency.
There are many products that perform excessive control, and harvest accuracy is
Or, focus only on harvest efficiency and use a combination harvester.
Another important result of the harvesting machine is
The degree of sorting, that is, the proportion of straw waste in the harvested grain,
Regarding the degree of grain selection
The
Automation that appropriately controls the degree of selection
It has not become something that can be achieved and has traditionally been neglected.
I don't like coming here. However, such selectivity is
Regarding grain that is harvested if it is extremely poor.
and then have to re-sort again using the sorting machine.
In fact, if the degree of sorting is poor, there will be problems in the harvester itself.
Clogging may occur in grain transport parts such as grain conveyors.
When processing the harvested grain with a rice sensor etc.
However, clogging may occur in the processing machine, and
If the degree of sorting is poor, the drying ability of the harvested grain will be reduced.
As the ratio decreases, uneven drying occurs and paddy
The proportion of straw waste in the grains, such as a decrease in the grinding efficiency,
Various inconveniences may occur due to high
Therefore, it is important to consider harvesting accuracy and efficiency as well.
It is a kimono. Therefore, the total operation of self-propelled harvesters is
In the control system, the control of sorting degree is
How is it related to accuracy and work efficiency control?
Highly selectable without reducing work accuracy or work efficiency.
The important question is whether to do it in such a way as to obtain a different degree.
It's getting old. The main purpose of this invention is to first
As mentioned above, it is a self-propelled harvester, and the work accuracy and
and control of work efficiency.
to maintain a high degree of sorting and stability.
actuation automatically so that accurate mechanical movement is achieved.
To provide a novel self-propelled harvester that is controlled
be. Self-propelled harvesting of the invention developed under this challenge
In the first mentioned type of harvester, the
Grain flow sensor that detects the flow rate of grained grains
Sorting that detects the degree of sorting from the proportion of straw waste in the grain
In addition to providing a grain flow rate sensor,
The detected value is input and the air volume is set according to the grain flow rate.
The air volume of the sorting air is increased or decreased depending on the grain flow rate.
It is an air volume adjustment device that controls the sorting degree sensor.
When the detected value is input, the above settings are made according to the detected value.
The air volume value is determined by determining the air volume that achieves the planned degree of sorting.
An air volume adjustment device that is modified to
It is characterized by this. The greatest feature of this invention is that the control
The actual value of the power sorting degree is determined by
Sorting degree sensor that detects the degree of sorting from the percentage of waste
Therefore, the detection value can be directly detected and this detected value can be controlled.
The configuration is configured to automatically control the degree of sorting as an index.
Combined harvesting that controls the degree of selection and sorting
It is the biggest factor that controls the degree of sorting in machines.
It is designed to be carried out by controlling the air volume of a certain sorting air.
There is something that has been accomplished. In this way, the actual degree of selection
The value itself is used as a control index to determine the degree of selection.
control the amount of sorting air, which is the largest factor in
Self-propelled harvesting according to this invention by rolling
The machine always achieves and maintains the planned high degree of sorting.
It is becoming. Moreover, the self-propelled harvester of this invention is as described above.
In order to control the air volume of sorting air, the main component is
Grain flow sensor detection value as a control indicator
is used to control the air volume according to the grain flow rate using other controls.
Repairs are made based on the detection value of the sortability sensor, which is an indicator of the
A device that automatically controls air volume by correcting or correcting it.
It is made up of. The sorting wind is used to remove threshed grains.
Although straw waste is blown out from inside and sorted.
Therefore, the air volume is primarily determined by the sorting process.
quantity, which should be determined by grain flow rate
It is. Also, the grain flow rate suddenly fluctuates greatly.
Although this is unlikely to happen, the degree of selection may vary within the same field.
crop conditions that vary widely, e.g. grain moisture
Grain content, whether it is soft or not, and the strength of the grain culm
Shedding based on degree, grain shedding ability from grain culm, and change in grain culm length.
Changes in handling depth in the grain section, grain ratio during threshing
etc., or due to the influence of mechanical vibration etc.
may be floating and floating compared to the grain flow rate.
be. Based on the above, the main control is grain flow rate.
The degree of sorting is used as a control index to adjust the air volume.
The system is designed to control the air volume of the sorting air as a
The harvester of the present invention achieved stable mechanical operation.
It is designed to control the The air volume of the sorting air maintains an appropriate high degree of sorting.
By controlling the
This prevents excessive grain loss.
can avoid. For example, the air volume of the sorting air can be controlled by
This is achieved by controlling the rotation speed of the machine, but the consumption of
Since horsepower increases significantly with an increase in rotational speed,
In order to obtain the appropriate air volume according to the flow rate and degree of sorting.
By controlling the rotation speed, excessive power consumption can be avoided.
can avoid. That is, the harvesting machine of the present invention has the above-mentioned features.
Optimized control to prevent excessive grain loss or excessive power consumption
It is supposed to be achieved without any
Ru. In the total operation of the combine harvester,
The biggest factor governing work efficiency is vehicle speed.
Yes, there is also a large factor that governs work accuracy.
are the dust removal rate from the threshing section and the vehicle speed. did
As a result, total operational control of the harvester was carried out.
In some cases, the load acting on the threshing section, etc. is detected.
and maximize the vehicle speed within the range where the load does not become excessive.
The most appropriate control of work efficiency can be achieved by increasing
control is carried out and also detects the amount of grain loss and determines the amount of grain loss.
Dust is removed from the threshing section to keep the amount at an appropriate level.
By controlling the rate and vehicle speed, the most appropriate
The accuracy of the work is controlled. Therefore, the combination
In the total control of the in-type harvester, the present invention
When we position the control mechanism that followed, we find that the same
The control mechanism controls vehicle speed and dust removal from the threshing section.
It does not control the amount or anything, but has nothing to do with these directly.
It is used to control the air volume of sorting air in relation to
First, the load acting on the threshing part and the amount of grain lost.
grain flow rates that are not directly related to
Control is performed using the degree of selection as a control index.
work efficiency, work accuracy itself and
something that has little effect on its control
And it's getting better. Therefore, the controller according to the invention
The troll mechanism improves work efficiency, work accuracy, and
and have no adverse effect on the control of
A total control system for combine harvesters.
can be integrated into the system without any other inconvenience.
I am in touch with the people I live with. From the viewpoint of ease of control, the grain flow rate sensor described above is
The sensor and sortability sensor each output the detected value to the
It is composed of a sensor that outputs air signals.
Preferably, and correspondingly, the air volume adjustment device
The electrical signals from both sensors are input to determine the air volume.
An electrical control circuit is provided to control the operation of the regulating means.
is preferable. The detected value is converted into an electrical signal as described above.
For example, a sensor that outputs a grain or
Generates an electrical signal by sensing the contact pressure of straw waste
It is configured to include a piezoelectric element. It takes
The processor places this in the flow path of the threshed grains.
Alternatively, by placing it in the falling path, grains can
The straw debris in the grain can be brought into contact with the required detection.
Special considerations must be made when arranging the sensor to
Does not require placement structure. In a preferred embodiment of this invention, the grain
Piezoelectric element of particle flow sensor and pressure of sorting sensor
Both sensors are combined into one with a common electronic element.
Construct a stopped grain flow rate and sorting degree sensor, and
grain flow rate and sortability sensor
Filters only the electrical signals generated by contact.
The first corrugator to be filtered and the straw waste abutment
Filters only the electrical signals that are generated by
A second wave device is provided. Do it like this
and combine both sensors into a single sensor.
The sensor structure is significantly simplified, and the grain
Since the flow rate and the degree of sorting are captured at the same location,
Use these actual values as control indicators.
The precision of control is improved. The grain flow rate and sortability sensors described above are
Sorting of the grains in the flow path of the grains
It is desirable that the
Yes. i.e. place the sensor like this
This allows grains to be harvested as quickly as possible in the grain flow.
The flow rate and degree of sorting are detected and these controls
Quickly adjust the sorting air flow rate in response to changes in the index
It is done. In addition, the grain flow rate and sorting degree sensor mentioned above is
This can be adjusted along the width direction of the threshing section.
It is preferable to support, install, and even thresh
The angle of inclination to the grain flow direction can be changed and adjusted.
Preferably, it is supported and installed. In other words,
The sensor position can be adjusted as shown above.
It also depends on the type of crop being harvested and the length and shortness of the grain culm.
Depending on the situation, the handling depth in the threshing section is changed, etc.
The grain flow distribution in the grain width direction is different.
The sensor is moved to the position where the most accurate detection can be obtained.
position the sensor and set the sensor angle above
Depending on the grain type, the
The sensor angle is adjusted to accommodate differences in grain specific gravity.
The direction in which the grains come into contact can be changed by adjusting the
sensor sensitivity can be adjusted. In order to perform stable control, sensor output is
The force signal is transmitted directly to the electrical control circuit described above.
According to one embodiment of the present invention,
A sump that smooths the electrical signal corresponding to the grain flow rate.
Corresponds to the le-and-hold circuit and the degree of selection.
Other sample and ho
The input signal is smoothed by a field circuit.
It is desirable to do so. In another preferred embodiment of this invention,
In the electric control circuit described above, there is a
Electrical adjustment that allows you to change and adjust the set air volume value.
Means, e.g. a potentiometer, are provided.
Ru. By doing this, the type of crops to be harvested and
Sorting according to grain flow rate in response to crop conditions, etc.
You can adjust the amount of airflow. The flow rate of the sorting air is changed too frequently.
In terms of stability of control and durability of control equipment,
But it's not desirable. Therefore, one of the aspects of this invention is
In an embodiment, in the electrical control circuit described above,
The first step is to operate the air volume adjusting means in the direction of increasing the air volume.
1 operating circuit and air volume adjustment means in the direction of decreasing air volume.
a second operating circuit section to be operated;
The set air volume value for operating the first operating circuit section and the corresponding
The set air volume value that operates the second operating circuit section is
An electrical means for imparting a dead zone that varies the
provided. By doing this, the above 2
The air volume of the sorting air is not changed between the air volume settings for each species.
This results in stable control. Crop conditions within a field are extremely constant and selection is made
In cases where it is not necessary to control the wind volume.
In view of the fact that there is a possibility that
In this case, the flow rate of the sorting air is controlled by the electric control circuit.
Signal giving circuit that can input a constant electric signal
In addition, the above-mentioned grain flow rate sensor and
Either one of the selectivity sensor and the above signal imparting circuit
the electrical control circuit can be selectively connected to the electrical control circuit.
A switch means is provided. Therefore, the above steps
When the switching means is switched to the signal giving circuit side,
The flow rate of sorting air is constant without automatic control.
Ru. In other embodiments of the invention, the above-mentioned
for controlling the circuit switching operation of the switch means.
Switching circuit, manually operated automatic control
Transport of harvested grain culms to the input switch and threshing department
Equipped with a conveyance detection switch that detects the presence or absence of
when both of these switches are in the on state.
Only when the switch means is connected to the signal applying circuit side
The grain flow rate sensor and sorting degree sensor described above
A switching circuit configured to switch to the side
Establish. In this case, turn on the automatic control switch.
Even if the harvested grain culm is placed in the threshing section, the harvested grain culm cannot be transported to the threshing section.
If the conveyance detection switch is turned off without being asked
For example, since automatic control operation is not performed, the threshing section
On the other hand, automatic control is performed when the harvested grain culm is not supplied.
Inconveniences caused by driving can be avoided. Furthermore, in another embodiment of this invention,
The above-mentioned transport in the above-mentioned switching circuit
Add an on-delay circuit to the detection switch.
At this time, automatic control is started from the beginning of the harvesting process.
Even if the switch is inserted, the switching circuit will
After the conveyance detection switch is turned on, the
The signal is delayed by the delay time set by the erase circuit.
This means switching to the sensor side,
For the same delay time, the above-mentioned signal is sent to the electric control circuit.
Signal input is performed from the attached circuit side, and the sorting process is performed.
The start is performed from a constant value of the amount.
control is stabilized. Then, the above
The delay time of the delay circuit is
From the moment the grain culm is detected by the
We will cover the process up to the point where the threshed grains are sent.
By setting this setting, grains that undergo sorting
The automatic control operation started even though there were no grains.
Inconvenience can definitely be avoided. On the contrary, automatic control
Harvesting work is in progress with the switch turned off.
, turn on the switch to switch to automatic control.
When operated, the transport detection switch is already on.
The function of the on-delay circuit has already been resolved.
Because of this, the desired automatic control operation can be started immediately.
It's convenient for me to enter. In one embodiment of the present invention, the signal attached
In the supply circuit, the said electric current which makes the volume of sorting air constant is provided.
Electric adjustment hand that allows changing and adjusting the value of the air signal
A step, for example a potentiometer, is provided. this
By doing this, when automatic control is not performed,
Depending on the crop type and crop conditions, etc.
This allows the flow rate of the sorting air to be adjusted. Hereinafter, the illustrated embodiments of the present invention will be explained.
Configuration of self-propelled harvester and its effects
I will explain this more specifically. The illustrated embodiment illustrates the invention as shown in FIG.
This is an example of a combined harvester. Figure 1
The combine shown in Figure 1 is used to drive left and right crawlers 1.
While moving the aircraft inside the field, plant the rice in the field.
When the grain culms to be grown are separated by weeding plate 2 at the frontmost part,
Both are laid slightly backward from the 2nd position of the grass dividing board.
Grain culm lifting device 3 is used to raise the grain culm.
Also, the planted grain culms are cut using the cutting blade 4 located behind the dividing plate 2.
For harvesting at the base of the stock, and for harvested grain culms, use the horizontal conveyor belt.
5 and vertical conveyance belts 6 and 7 on the stock side and the tip side.
and transport it to the direction of the threshing section 8 on the machine body, and the threshing section 8
Reaping with feed chain 9 along one side
While transporting the grain culm backwards, remove the tip side of the harvested grain culm.
The grain is supplied to the grain section 8 to perform threshing.
After sorting, the grains are transferred to the other side of the machine.
It is configured so that it can be received by Pusatsuka 10.
There is. This combine also uses the above feed
Threshing is done by providing an extension 9a in the rear upward direction on the en 9.
The waste straw exiting the section 8 is carried out by the extension section 9a.
The driving source is
The engine 11 is mounted on the rear of one side of the aircraft.
Ru. For convenience of explanation, first the front of the illustrated combine
The configuration of the threshing section 8 is outlined and explained with reference to FIG.
Then, as shown in the figure, the handling room 12 of the threshing section 8
Inside, there is a handling trunk 13 with its axis running in the longitudinal direction of the aircraft.
is rotatably provided, and from the engine 11
Transmitted and rotationally driven via an appropriate transmission mechanism
The handling barrel 13 has a large number of handling teeth 14 implanted thereon.
The grains are separated from the tip of the harvested grain culm by
Perform threshing. In the handling room 12, there is also a handling cylinder 13 and
The support can be rotated so that the spacing can be changed and adjusted.
A plurality of dust feeding valves 15 are held in the handling chamber 12.
The dust supply valve 15 that changes and regulates the degree of dust discharge from inside the
I'm being kicked. The threshing section 8 is also located below the handling drum 13 described above.
It is equipped with a crimp net 16 placed in place, and this
The crimp net 16 is made to fall onto the crimp net 16.
Regarding grains, leak grains and fine straw waste, etc.
The leakage material is removed from the dust outlet at the rear end of the crimp net 16.
discharge from. From below the crimp net 16 to the rear
The feed pan runs from the front to the rear.
17. Chaff sheave 18 and gray which are arranged vertically
19 and a stroke rack 20.
A rocking sorting mechanism is provided, and a threshing
The front and last positions in the lower part of part 8 are respectively karawini.
21 and a dust exhaust fan 22 are provided. the above
The swinging sorting mechanism 17-20 moves forward and backward and up and down.
The frontmost foot in the mechanism is oscillated.
As the dopant 17 swings, the crimp net 1
While transporting leakage from 6 backwards, heavy grain
Separate grains to the bottom layer and light straw waste to the top layer.
Ru. From feed pan 17 to chaff sieve 18
From the falling grains, the selected grains sent from the karaki 21 are
The straw waste is further removed in a separate process, and the above grains are
By leaking the chaff sheave 18, it will be sorted again.
From this chaf sheave 18, the mesh is even finer.
Leak crab grain sieve 19, and during that time
Following the selection style of Karaki 21, we have carefully selected one
It is supplied to the port 23. Also feed bread 17
Strollack with the help of Karaki 21 wind
20 From the straw waste that is transferred to the top, straw straw
Due to the rocking of the rack 20, the grains mixed in are facing forward.
are separated and transferred onto the chaff sheave 18.
In this case, the ear pieces and some grains are separated to the lower layer.
from the through hole of the stroke rack 20.
is supplied to port 24. Oscillating sorting shown in Figure 2
In the mechanism, the above-mentioned stroke rack 20
An upper stroke rack 25 is provided above, and
By swinging the partial stroke rack 25,
It assists the sorting action of the trolley rack 20 and
In order to promote the removal of straw waste,
Ru. The action of the stroke rack 20 itself and the dust removal fan
22 suction winds, and even a selection from 21 karaki
Straw waste leaves the straw rack 20 by a different wind.
is discharged toward the rear of the aircraft from the No. 3 dust exhaust port 26.
Ru. The grains fed to the first mouth 23 as described above
The machine is conveyed by the first conveyor 27 in the first mouth 23.
A frying conveyor (not shown) conveys the grain to the other side of the body.
is transferred to the top sutcher 10. Ma
The ears of ears fed to the second port 24 as described above
Items are returned to the handling room 12 by the second thrower 28.
It is then reprocessed in the treatment room 12. The illustrated converter whose outline structure and operation are explained above.
In order to detect its operating state, the
As shown in FIG.
Handling cylinder rotation speed sensor 29 whose specific structure is shown in Figure 8
, and the number of rotations of the winch 21 is detected, as shown in Fig. 3.
The karachi rotation speed sensor 30 showing the structure and the threshing
Detecting the flow rate of the grains and sorting them in the threshing section 8
Grain flow rate, the specific structure of which is shown in Figure 4.
and from the sorting sensor 31 and the third dust exhaust port 26.
Detecting the amount of grain loss that is wasted, Figure 9
A grain loss amount sensor 32 having a specific structure shown in FIG.
It is provided. These sensors 29-32
Among the detected values, the detected value of the Karakine rotation speed sensor 30
and the detected value of the grain flow rate and sorting degree sensor 31.
is used for the novel control according to this invention.
It will be done. Detection value of handling cylinder rotation speed sensor 29 and grain loss
The detected value of the loss sensor 32 will be explained later.
Vehicle speed of the illustrated combine harvester and opening degree of the dust feed valve 15
It is used to control the The specific structure of the Karachi rotation speed sensor 30 is shown in Figure 3.
To explain, this sensor 30 is
The blower blade at 21 is fixed to the fixed chisel shaft 33.
The rotor is fixed and rotates integrally with the winnow shaft 33.
The rotor 34 is provided with a drum-shaped rotor 34.
On the inner circumferential surface of the
A magnet 35 is fixed thereto. Karakine rotation speed set
The sensor 30 is further configured as shown in FIG.
, a fixed-position reed strip is provided opposite to the rotor 34.
It is equipped with switch 36, and this reed switch 3
6 to output the output from the reed switch 36.
An integrator 37 is provided to integrate the voltage. Li
The code switch 36 has one terminal configured as a power supply.
When connected to the positive terminal of battery 38,
Both terminals are grounded, and the rotation of the rotor 34 is
As the rotor 34 rotates, the magnet 35 inside the rotor 34
Every time the reed switch passes 36 positions, the magnetic
It is turned on automatically. In the integrator 37 above
Amplifier 39 is provided in connection, and the above
By means of members 34-37, 39, the output end is
Voltage signal V proportional to the number of rotations of the winch 21₁Outputs
Karawine rotation speed detection circuit C₁is configured. Next, as shown in Figure 2, the first opening 23 is slightly inclined.
Placed in the upper position after the
Grain flow rate and sorting degree sensor 31 located
As shown in Figure 4, piezoelectric ceramic disks, etc.
It is equipped with a piezoelectric element 31a, and when it receives pressure,
A voltage spike or voltage pulse corresponding to the pressure
It is configured in what it outputs. Therefore,
This grain flow rate and sorting degree sensor 31
The sheave 19 leaked and received the sorting wind from the Karakino 21.
grains and straw waste that may be contained in some amount in the grains.
When the piezoelectric element 31a hits the surface and receives pressure, the pressure
Outputs voltage pulses with frequency and amplitude according to force.
Ru. Such voltage pulses naturally cause the piezoelectric element to
When grains hit the surface of the child 31a and when light straw debris
In the case of a hit, there are hard grains and soft straw waste.
In this case, the pressure applied to the piezoelectric element surface (contact pressure) is different.
Therefore, the pulse P illustrated in FIG.₁,P₂
As in, the frequencies are different. Grain flow rate and sorting degree
In order to detect each of the
sea urchin, grain flow rate and sorting degree sensor 31 respectively.
Connect the input terminal to the first band pulse filter.
40 and a second band pass filter 41 are provided.
It is being Then, as shown in Figure 5, the first
The bandpass filter 40 has a frequency corresponding to the grain.
number of voltage pulses P₁Filtering only wrinkles
Voltage pulse P corresponding to debris₂cut this and two
It is configured to not be transmitted to the next side, and on the other hand,
The second bandpass filter 41 corresponds to straw waste.
voltage pulse P with a frequency of₂Filter only
Voltage pulse P corresponding to grain grain₁cut this
It is configured such that the signal is not transmitted to the secondary side.
As shown in Figure 3, each of the above bandpass filters
When connected to routers 41 and 42, voltage pulse P₁，
P₂Width increasing devices 42 and 43 are provided,
Connected to each of these amplifiers 42 and 43, furthermore,
A voltage pulse is input from each amplifier 42, 43.
When it is turned on for a certain period of time, the
A monomulti 44 that outputs a rectangular voltage pulse with a width of
45 is provided. Each of these monomulti
When connected to 44, 45, each monomulti 44, 4
Amplifiers 46 and 47 are installed to integrate the output pulses of 5.
I'm being kicked. Connected to each amplifier 46, 47
is a sample-and-hold for purposes described below.
Circuits 48 and 49 are provided, and the above members
- members 31, 40, 42, 44, 4
6, 48 is grain flow rate detection circuit C₂But, ma
Members 31, 41, 43, 45, 47, 49
Depending on the selection degree detection circuit C₃are each configured
has been done. Grain flow rate detection circuit C₂is its output end
, a voltage signal proportional to the flow rate of the threshed grain
V₂On the other hand, the selection degree detection circuit C₃is its origin
At the power end, the output is proportional to the proportion of straw waste in the above grains.
voltage V₃Output. Grain flow sensor that detects the flow rate of threshed grains
Detecting the degree of sorting from the ratio of straw waste in the grains and grains
Different from the case shown in the diagram, the sortability sensor is
It is also possible to configure it into something. especially grain flow
The amount sensor measures the flow rate or the amount of grain flowing through the first mouth 23.
is the discharge of grains discharged into the topsucker 10
It can be easily configured to detect flow rate, etc. death
While doing so, connect the grain flow sensor and selector as shown.
It is also possible to provide a sensor 31 that also serves as a separate sensor.
is an advantageous means of simplifying the sensor structure.
Ru. The grain flow rate and sortability sensor 31 is
In particular, it is supported as follows: That is,
As shown in FIG.
A feed screw 51 whose one end is supported by a bearing 50
A straight line fixedly installed on the other side wall of the threshing section 8.
Attach the other end to the motor shaft of the flow motor 52 with a flexible
The feed screw 51 connected by the joint is
It is provided so that it can rotate along the transverse direction of the body.
The sensor 31 has a nut portion 31 integrally formed therein.
b is screwed onto the feed screw 51 and installed in the threshing section 8.
It is placed. The DC motor 52 is a combination motor as shown in the figure.
Left and right adjustment switch 53 installed on the driver's seat of the vehicle,
54 to selectively rotate in one direction or the other.
It can be turned over. Also, fix it to the sensor 31 and feed it.
A bar 55 is provided parallel to the screw 51,
This bar 55 is extended to the outside of the threshing section 8, and the threshing
It is supported by a support frame 56 on the outer surface of the side wall of part 8 so as to be movable up and down.
The horizontal U-shaped support frame at the upper end of the square bar 57
57a is inserted. on the outer surface of the side wall of threshing section 8
Stopper 58 and other stopper 5 near the driver's seat
9 to which the outer wire 60a end is fixed.
A pull wire 60 is provided, and this
Inner wire 60 of push pull wire 60
The b end is provided at the lower end of the square bar 57 and the driver's seat.
It is fixed to the lower end of the angle adjustment lever 61.
Ru. The angle adjustment lever 61 is adjusted by the arrow shown in FIG.
The wire 60 is rotated along the direction A.
Push/pull operation is performed, but the lever 61
is a slight amount on the rotation fulcrum shaft 62, and the fulcrum shaft 62
It is supported so that it can be moved along the length, and the lever
-61 is moved in one direction on the fulcrum shaft 62.
A pull 63 is provided on the fulcrum shaft 62.
Ru. And in the driver's seat, there is an intermittent signal along the direction of arrow A.
A lock plate with a lock groove 64a formed therein.
64 is fixedly installed, and one of the
Place the lever 61 halfway into the lock groove 64a with the spring 6.
Insert with 3 forces and lock the angle adjustment lever 61.
It is said that the structure is to carry out. Angle adjustment lever 61
The rotation operation is performed by resisting the force of the spring 63.
61 in the opposite direction to the lock plate 64.
This is done by first pulling it out from the lock groove 64a. Considering the support and adjustment structure explained above, the left
Selectively select either the right adjustment switch 53 or 54.
DC motor 52 and its
The feed screw 51 is rotated in one direction or the other.
By rotating the bar 55 in the direction for a certain period of time,
is inserted into the support frame 57a, so it cannot be fed.
The sensor is prevented from rotating around the same 51.
31 in the longitudinal direction of the feed screw 51, therefore
It is moved along the transverse direction of the threshing section 8, and
The position of the sensor 31 can be adjusted as desired. Also the corner
Move the degree adjustment lever 61 in one direction along arrow A or in the other direction.
Rotate the push-pull wire 60 in the direction of
An intervening square bar 57 and a support frame portion 57a at its upper end.
Raise and lower the bar 55 and tighten the feed screw.
The sensor is attached to the feed screw 51 around the axis of the feed screw 51.
By rotating and displacing the sensor 31, the sensor 31 can be tilted.
The angle can be adjusted as desired. Sen in threshing section 8
The position of Sir 31 in the left and right direction can be confirmed.
A scale plate 65 is provided on the driver's seat, and the scale plate
A pointer 66 supported movably along 65
However, the bar 55, which moves left and right together with the sensor 31,
It is connected by an appropriate connection means 67 and is provided.
Ru. Turning on the left and right adjustment switches 53 and 54 is as follows:
Move the pointer 66 along the scale plate 65 to the desired position.
It is released when it is closed. sensor 31
To know the tilt angle, press the angle adjustment lever 61.
A scale 64b that allows the rotational position to be visually recognized is attached to the lock.
It is applied to the plate 64. Left side of the grain flow rate and sorting degree sensor 31 mentioned above
The purpose of right position adjustment and tilt angle adjustment is as follows.
It will be held in In other words, the handling depth in the threshing section 8
varies depending on the length of the grain culm to be harvested,
First, adjust the left and right positions of the sensor 31 as described above.
Depending on the type of sea urchin crop and the length of the grain culm, the threshing section 8
The fact that the distribution of the amount of grain falling in the left and right directions is different
In view of this, the sensor is moved to the position where the most accurate detection
This is done for the purpose of positioning the sensor 31. Also
The sensor 31 increases the tilt from the horizontal posture.
As the sensing pressure decreases and the sensitivity decreases, the sensor
-31 tilt angle adjustment is similar to this type of sensitivity adjustment.
Purpose, especially considering that specific gravity differs depending on grain type.
Sensor sensitivity is adjusted for each type of grain that is harvested for processing.
Changes are made for the purpose of adjusting. In the illustrated combine harvester according to the present invention, the above-mentioned
The Karawin rotation speed sensor 30 and the grain flow rate and
Grain removal is carried out according to each detection value of the sorting degree sensor 32.
Changing and controlling the flow rate of the sorting air for sorting
has been done. Therefore, the next step is to change the wind force of the sorting wind.
The mechanism itself for changing the position will be explained with reference to Fig.
Ru. As shown in FIG. 6, the china shaft 33 is
A drive shaft 68 on the engine 11 side parallel to the winnowing axis 33
, the pulleys 69 and 70 on both shafts 68 and 33
Transmission is received via the V-belt 71 wound around the
and rotate it. Pulley on drive shaft 68
69 is particularly a position lock keyed on said shaft 68.
The pulley half 69a on the fixed side and the slider on the shaft 68.
Sliding although relative rotation is not possible due to the ID key 72
a freely provided movable pulley half 69b;
The two pulley halves 69
A disk body loosely fitted on the drive shaft 68 between a and 69b
73 and the movable pulley half 69b.
and move the movable pulley half 69b to the fixed pulley.
Sliding force is applied in a direction away from the Lee half portion 69a.
A pair of compression springs 74, 75 are provided.
Furthermore, it is driven by the base end side of the movable pulley half 69b.
On the shaft 68 is a shaft that is fixed to the machine frame and rotates the drive shaft 68.
A rotatably supported cylinder 76 is provided.
Attach the base end of the pulley half 69b to the cylinder 76 of
With an oil-tight fit, the cylinder 76 is attached to the cylinder body.
Hydraulic system with pulley half 69b as a piston
The cylinder 77 is connected to the compression springs 74 and 75.
The inside of the cylinder 76 is further reduced and
The extension operation is performed by hydraulic action on the oil chamber 77a.
A single-acting hydraulic cylinder 77 is configured.
There is. The shaft 68 is attached to the tip of the drive shaft 68.
The seal housing 78 is rotatably supported.
An oil distribution chamber 79 is formed in the oil distribution chamber 7.
9 is a hydraulic system in an oil passage 80 bored in the drive shaft 68.
It is communicated with the oil chamber 77a of the cylinder 77.
Furthermore, the pulley 70 on the karaoke shaft 33 also
Fixed side pulley half provided in a fixed position above
70a and the boss of this stationary pulley half 70a
The slide key 81 on the top prevents relative rotation.
Half of the movable pulley is placed so that it can slide freely.
70b, and the movable pulley
The half portion 70b is connected to the spring receiving disk 82 on the winnow shaft 33.
Both ends are received by the pulley half 70b.
The compression spring 83 causes the fixed pulley half 70a to
It is energized by sliding in the direction. As a result of the above, the pulley 69 on the drive shaft 68 is
It is possible to supply hydraulic pressure to the oil chamber 77a of the pressure cylinder 77.
The movable pulley half 69b is connected to the fixed pulley half 6.
When displacing in the 9a direction, enlarge its effective diameter.
Conversely, the hydraulic pressure is removed from the oil chamber 77a, and the spring 74,
75 force causes the movable pulley half 69a to move in the opposite direction.
When displacing it, its effective diameter should be reduced.
The hydraulic pressure is supplied to and discharged from the oil chamber 77a.
By control, the movable pulley is moved as shown in Figure 6.
The pulley half 69b is connected to the stationary pulley as shown by the chain line.
- Maximum effective diameter and movable side pulley in contact with half part 69a
The cylinder half 69b is connected to the cylinder 76 as shown by the solid line.
Between the minimum effective diameter that is maximally retracted inward,
The effective diameter of the pulley 69 can be changed steplessly.
It's summery. And the pulley 6 on the drive shaft 68
When the effective diameter of 9 is changed as above, the
The pulley 70 on 33 is also the movable pulley half.
The portion 70b is displaced via the V-belt 71.
As a result, the effective diameter of the pulley 69 on the drive shaft 68 becomes
When it is enlarged, the effective diameter is reduced and the drive shaft 6
When the effective diameter of pulley 69 on 8 is reduced,
The effective diameter is changed so that the effective diameter is enlarged.
Ru. Therefore, in the end, the oil chamber 7 of the hydraulic cylinder 77
Both pulleys are controlled by supplying and discharging hydraulic pressure to 7a.
By changing the effective diameters of 69 and 70, the
Change the rotation speed of Bikaraki 21 steplessly within a certain range.
It has become possible. Regarding the oil chamber 77a of the above-mentioned hydraulic cylinder 77
In order to control the supply and discharge of hydraulic pressure, the sixth
A hydraulic circuit as shown in the figure is provided. this
The hydraulic circuit has a pump port and tank port on the primary side.
equipped with a port and a cylinder port on the secondary side.
Equipped with a 3-port, 3-position solenoid switching valve 84.
It is growing. The above pump port has engine 1
1 to lead hydraulic oil from the oil tank 85.
The hydraulic pump 86 that comes with the tank is connected, and the tank
The port is connected to the oil tank 85 and the cylinder
The port is connected to the oil distribution chamber 79 and thus to the oil chamber.
It is connected to 77a. The electromagnetic switching valve 84 is shown in the figure.
Connect the pump port and tank port as shown
The oil from the hydraulic pump 86 is released to the oil tank 85.
At the same time, block the cylinder port and remove the hydraulic cylinder.
The neutral position N where the cylinder 77 is stopped and the pump port
The cylinder port is connected to the oil chamber 77a.
The oil pressure set by the leaf valve 87 is supplied to the pulley.
-69 effective diameter and the tongue
The speed increase position U that blocks the port and the cylinder
The oil chamber 77a is connected between the port and the tank port.
Eliminate hydraulic pressure and reduce the effective diameter of the pulley 69.
In addition to blocking the pump port,
and a speed position D. The electromagnetic switching valve 84
is solenoid SL₁Move to speed increase position U by excitation of
and other solenoid SL₂Deceleration position due to excitation of
Moved to D. Based on the above, solenoid SL₁When you excite
When the effective diameter of the pulley 69 is expanded,
The effective diameter of the pulley 70 is reduced, and the winnowing shaft 33
And the rotation speed of the karaki 21 is increased, and conversely the solenoid
Do SL₂When exciting the pulley 69,
As the diameter is reduced, the effective diameter of the pulley 70 is expanded.
The number of rotations of the winch shaft 33 and the winch 21 is low.
However, each solenoid mentioned above
SL₁,SL₂are respectively installed in the control circuit shown in Figure 3.
connected in parallel with a diode for surge absorption.
Then, connect one terminal to the positive terminal of the battery 38.
and ground the other terminals when inserted.
ing. As shown in Figure 3, each solenoid
SL₁,SL₂In the earth circuit of
transistor tr₁, T.R.₂are inserted, and each
Noid SL₁,SL₂is each transistor TR₁，
T.R.₂is selectively energized by the on operation of
Ru. Next, the third
The control circuit shown in the figure will now be explained. First of all
Transistor TR mentioned above₁, T.R.₂it on the base of
Comparators 88, 8 whose output terminals are connected to each other
9 is provided, each transistor TR₁, T.R.₂
is, the comparators 88 and 89 associated with it are
When the level is high, it can be turned on.
And so it is. Next, in the control circuit shown in FIG.
Each sample-and-hold circuit 48, 49
is said to be as follows: That is, the first
In Figure 3, the grain flow rate detection circuit C₂sump inside
Only the specific structure of the control and hold circuit 48 is shown.
As shown, the circuit 48 is typically
Output resistance amplifier 48a and high input resistance amplifier 48b
A sampling switch 48 is included in the connection circuit with
c, and at the same time insert the switch 48c on the rear side.
There is a hole in the ground circuit that grounds the above connection circuit.
By inserting a capacitor 48d for the code,
It is configured. The switch 48c mentioned above
Connect the control terminal to which the on/off signal is input.
Then, intermittently apply square voltage pulses as shown.
A pulse generator 90 is provided for generating pulses. death
Therefore, as shown, the output from the pulse generator 90 is
When the pulse is on, switch 48c is turned on.
The input voltage of circuit 48c is sampled.
pulse from pulse generator 90 is off.
During the period, switch 48c is turned off.
The sampled voltage is stored on capacitor 48d.
is held and output to the output terminal of the circuit 48. the above
The mechanical switch 48c is
However, it is actually a switching transition.
A star is used. The sorting degree detection circuit C₃In
Similarly, the sample-and-hold circuit 49
The control terminal is
The pulse generator 90 described above is connected. As mentioned above, the detected value of grain flow rate and the detection of sorting degree are
Sample and host prices for each
grain flow due to grain control.
Quantity detection circuit C₂output voltage V₂and sorting degree detection circuit C₃
output voltage V₃, the smoothed output voltage is
This stabilizes the control described below. For the input terminals of comparators 88 and 89
is Karakin rotation speed detection circuit C₁output terminal and grain flow
Quantity detection circuit C₂Connect the output terminal of
It has been done. In other words, Karaoke rotation speed detection circuit C₁of
The output terminal is connected to the comparator 88 via the resistor Ra.
Connected to the negative input terminal and connected to the resistor
The positive side input of comparator 89 via Ra and Rb.
connected to the power terminal. In addition, the grain flow rate detection circuit
C₂The output terminal is a potentiometer or variable
Resistor VRa and relay switch RS₁via the b contact of
and connect the positive input terminal of comparator 88 to the
to the negative input terminal of the parator 89, respectively.
connected. Similarly, as shown in Figure 3,
Road C₁Connect the output terminals of
The following connection circuit including the above resistors Ra and Rb is:
Two ground circuits on the downstream side of comparator 89
The roads are branched into roads 91 and 92, and at the branch point,
Alternative operation of either ground circuit 91 or 92
Relay switch RS for₂Please set up
Ru. During automatic control, as described later, the ground circuit 9
1 is in the active state, but the ground circuit 91
is a resistor Rc and a potentiometer or variable resistor
VRb is inserted. The other ground circuit 92
A resistor Rb is inserted in . Sorting degree detection circuit C₃output voltage V₃is mentioned above
Change the resistance value of variable resistor VRb in the ground circuit 91.
It is used to control the For this purpose, the same
Similarly, the servo control circuit 93 shown in FIG.
It is. This servo control circuit 93 is a servo increaser.
A servo motor that is driven in forward and reverse directions via the width switch 93a.
93b. In addition, the control circuit 93
is one terminal connected to the positive terminal of the battery 38.
Connect the potentiometer or variable resistor
VRc, and the other terminal is grounded through the resistor Re.
Potentiometer or variable resistor VRc
It is equipped with. At the input end of the servo amplifier 93a
is the selection degree detection circuit C₃output terminal and variable resistance
It is connected to the movable contact of VRc. servo motor
As shown in the figure, the resistor 93b is connected to the variable resistor VRb.
The movable contact and the movable contact of variable resistance VRc, respectively.
It is supposed to be driven by Based on the above,
The servo control circuit 93 has both inputs of the servo amplifier 93a.
voltage V₃,V_Fouris balanced and the servo motor 93b
Sorting degree detection circuit C from stopped state₃output of
voltage V₃When the servo amplifier 93a changes, the
The servo motor 93b is rotated forward or reverse.
By changing the resistance value of variable resistor VRb,
At the same time, the resistance value of variable resistor VRc changes to servo motor 9.
3b, both voltages V₃，
V_FourWhen the is balanced again, the servo motor 93b
When the rotation of the motor is stopped, the voltage increases.
V₃Change the resistance value of variable resistor VRc to the value according to
Control. The servo control circuit 93 is constructed in this way.
The resistance value of variable resistor VRb, and therefore the corresponding
The voltage set by resistor VRb is the selection degree.
Detection circuit C₃output voltage V₃so that it is inversely proportional to
Configured for change control. The control circuit shown in Fig. 3 is designed to control the number of revolutions of the winch to 21.
configured to allow selective automatic control of
In case the automatic control is not carried out.
In addition, the positive input terminal of comparator 88 and the
The above-mentioned cross is connected to the negative input terminal of the parator 89.
Terry 38, potentiometer or variable resistor
VRd and said relay switch RS₁through the a contact of
It is connected. In Figure 3, RC is
Both relay switches RS₁,RS₂Rire paired with
- coil, this relay coil RC is a surge absorber.
After connecting in parallel with the expropriated diode, one terminal is connected
Connect to the positive terminal of battery 38, and connect the other terminals.
Switching transistor TR₃ground through
and is provided in the control circuit. Therefore,
Grain flow rate detection circuit C₂The output terminal of
TaTR₃turns on and relay switch RS₁is on the b contact side
Comparators 88, 8 only if switched
Connected to 9. Transistor TR above₃on
Sometimes other relay switches RS₂is also cut to the b contact side.
The ground circuit 91 operates. Transistor TR mentioned above₃The base of
Connect the positive terminal of Lee 38 as follows.
There is. That is, as similarly shown in FIG.
Connect each to the positive terminal of battery 38.
An automatic control switch 94 and a transport detection switch
95 are connected in parallel with each other.
Of these, the automatic control switch 94 is a combination switch as shown in the diagram.
The transport detection switch is located in the driver's seat of the machine.
For example, as shown in FIG.
Installed facing the grain conveyance route of Dochen 9.
Grain culm is transported by feed chain 9.
Inside, the movable contact member is pushed by the grain culm and turns on.
Things have been. These switches 94,9
A NAND circuit 96 is provided on the secondary side of 5.
The automatic control switch 94 is connected to the NAND circuit 96.
Directly to the input terminal of , and the conveyance detection switch 95
An on-delay circuit is connected to the input terminal of the NAND circuit 96.
are connected to each other via path 97,
The output terminal of the NAND circuit 96 connects the inverter 98.
Transistor TR₃connected to the base of
There is. The on-delay circuit 97 is a transport detection switch.
The conveyance of grain culms is detected by the ON operation of Tsuchi 95.
After that, the grains are threshed to the sorting section in the threshing section 8.
To compensate for the time lag until it is sent
This includes resistors 97a, 97b, and capacitor 97.
c, diode 97d and inverter 97e are shown.
It has a normal structure connected as shown.
From the above, transistor TR₃is automatically controlled
Both the switch 94 and the conveyance detection switch 95 are turned on.
in the on state, the NAND circuit 96 is at low level.
The output is sent to the inverter 98.
is inverted to high level and input to the bass.
It will be in the on state only when the stop
and the automatic control switch 94 is turned on.
Then, turn on the conveyance detection switch 95 from the off state.
When the on-delay circuit 97 is closed, the on-delay circuit 97 is
Since the output operation is delayed by a certain amount of time, transportation inspection is difficult.
After a certain period of time after the output switch 95 is turned on, the
Injista TR₃turns on and relay coil RC is energized.
Relay switch RS₁,RS₂are respectively on the b contact side
can be switched to The operation of the control circuit shown in Fig. 3 will be explained below.
Ru. Turn off the automatic control switch 94
When automatic control of rotation speed is not performed
In this case, the number of rotations of the karaoke 21 is constant as follows.
Ru. In other words, in this case, the relay switch
R.S.₁is switched to the a contact side, so the comparator
Voltage input to the positive input terminal of the regulator 88
V_Fiveand negative input terminal of comparator 89
The voltage V input to_Fiveare respectively the power supply voltage Vcc
voltage V dropped by variable resistor VRd₈and constant
It is. Also relay switch RS₂is also switched to the a contact side.
Since it has been replaced, the Karakine rotation speed detection circuit C₁of
Output voltage V₁is divided by resistors Ra, Rb, and Rd.
Therefore, the negative input terminal of comparator 88
Voltage V input to child₆and comparator 89
Voltage V input to the positive input terminal₇are each
It is given by the following equation. V₆=Rb+Rd/Ra+Rb+Rd・V₁ ...(1) V₇=Rd/Ra+Rb+Rd・V₁ ...(2) That is, both voltages V₆,V₇All of them are Karagi times.
Rotation number detection circuit C₁output voltage V₁proportional to only.
Therefore, the expression V₇＜V_Five=V₈＜V₆ ...(3) The rotation speed of the winch 21 is controlled to satisfy the following.
becomes constant. Set resistance value of variable resistor VRd
(This refers to the resistance value of the resistor part on the power supply 38 side.
Same below. ) decrease the voltage V₈(=V_Five) to the voltage V₆Than
Once the level is raised, the comparator 88 will set the high level.
Bell becomes solenoid SL₁is excited and each pool is
The effective diameter of Lee 69, 70 (Fig. 6) is in the speed increasing direction.
This has been changed, and the rotation speed of Karachi 21 has been increased.
Detection circuit C₁output voltage V₁be enhanced
at voltage V₆is also increased, and the relationship in equation (3) is satisfied again.
The comparator 88 returns to low level, and the
Lenoid SL₁is demagnetized and the solenoid switching valve 84 (sixth
) is returned to the neutral position N, and the pulleys 69, 70
The effective diameter is fixed. Conversely, the variable resistor VRd
Increase the set resistance value and the voltage V₈(=V_Five) to the voltage V₇Yo
Once the temperature is low, comparator 89 goes high.
level, solenoid SL₂is excited and each pool
The effective diameter of Lee 69, 70 is changed in the deceleration direction,
As a result, the rotation speed of the Karakine 21 is lowered, and the number of detection times is reduced.
Road C₁output voltage V₁By lowering the voltage V₇too
The relationship in equation (3) is again satisfied and compatibilism is achieved.
The regulator 89 returns to low level and the solenoid SL₂
is demagnetized and the solenoid switching valve 84 is returned to the neutral position N.
As a result, the effective diameters of the pulleys 69 and 70 are fixed. As described above, the automatic control switch 94 is turned on.
In the closed state, the Karasaki 2
1 is constant, and the rotation speed is controlled by a variable resistor.
The variable resistance is inversely proportional to the set resistance value to VRd.
Set voltage V by resistor VRd₈The value is proportional to .
Figure 7 shows the grain flow rate Q on the horizontal axis and the winnow rotation speed RP.
In the control circuit of Fig. 3, with each on the vertical axis,
A graph depicting the relationship between the obtained values Q and RP.
However, if the automatic control switch 94 is in the off state,
In this case, the relationship line Loff shown by the broken line in Figure 7
Therefore, regardless of the flow rate Q, the rotation speed RP is constant,
This rotational speed RP is determined by the above setting on the variable resistor VRd.
It can be changed arbitrarily by changing the resistance value. Next, turn on the automatic control switch 94.
Regarding the case of automatically controlling the number of rotations of the chisel
explain. Automatic control switch 94 and conveyance detection
When both the switch 95 and the switch 95 are in the ON state, the
The relay coil RC is excited and the relay switch RS₁,RS₂
is switched to the b contact side. Therefore,
Input to the positive input terminal of the comparator 88
voltage V_Fiveand negative input of comparator 89
Voltage V input to the terminal_Fiveare grain flow rates, respectively.
Detection circuit C₂output voltage V₂is dropped with a variable resistor VRa.
voltage V₉and changes depending on the increase or decrease in grain flow rate.
do. On the other hand, the ground circuit 91 is put into operation.
By doing so, the Karakine rotation speed detection circuit C₁output voltage V₁
is divided by resistors Ra, Rb, Rc and variable resistor VRb.
As a result, the negative side of comparator 88
Voltage V input to the input terminal₆and comparator
Voltage V input to the positive input terminal of 89₇teeth
Each is given by the following formula. V₆=Rb+Rc+VRc/Ra+Rb+Rc+VRb・V₁ ……(Four) V₇=Rc+VRb/Ra+Rb+Rc+VRb・V₁ ……(Five) First, in the steady state during automatic control, the variable resistance
Considering the case where the resistance value of VRb is constant,
At this time, the rotation speed of the Karasaki 21 changes depending on the increase or decrease of the grain flow rate.
Accordingly, the changes will be controlled as follows. sand
In other words, the grain flow rate is excessive compared to the number of rotations of the winnowing machine.
Assuming that the grain flow rate detection circuit C₂output voltage
V₂becomes higher, and the output of comparator 88 correspondingly increases.
Voltage V of the last side input terminal_Five(=V₉) can also be increased
, the voltage V_Fiveis the voltage at the negative input terminal V₆Yo
The price is also getting higher (V_Five＞V₆), the comparator 88
It becomes high level and solenoid SL₁is excited and before
The effective diameter of each pulley 69, 70 (Fig. 6) is increased.
The speed direction is changed, and as a result, the number of rotations of the Karasaki 21 is increased.
is enhanced. With this increase in rotation speed, the number of rotations increases.
Rotation number detection circuit C₁output voltage V₁Because it increases
Voltage V expressed by equation (4)₆is also enhanced and compared
Voltage V at both input terminals of the motor 88_Five,V₆About V_Five
≦V₆The comparator
88 returns to low level, solenoid SL₁is demagnetized
Then, the solenoid switching valve 84 (Fig. 6) returns to the neutral position N.
and the effective diameters of pulleys 69 and 70 are fixed.
Ru. At this time, the other comparator 89 is at high level.
It will not be transferred to The reason is that the comparison
Voltage input to the positive input terminal of the motor 89
V₇is the voltage V₆is further reduced by the anti-Rb
, and the voltage V₆is the voltage V_Fivehigher than
Even if the voltage at both input terminals of the comparator 89
V₇,V_FiveV between_Five＜V₇The relationship will not be established immediately.
It is the body. On the other hand, if the grain flow rate is too small compared to the number of rotary machine rotations,
Assuming Natsu, grain flow rate detection circuit C₂output voltage
Pressure V₂becomes low, and correspondingly the comparator 89 becomes low.
Negative input terminal voltage V_Five(=V₉) is also lowered
Therefore, the voltage V_Fiveis the voltage at the positive input terminal V₇
(V_Five＜V₇), comparator 89
becomes high level, solenoid SL₂is excited,
The effective diameter of each pulley 69, 70 is in the deceleration direction.
This has been changed, and as a result, the rotation speed of Karaki 21 has been lowered.
It will be done. Along with this decrease in rotation speed, the number of rotations of the karaoke is detected.
circuit C₁output voltage V₁is lowered, so in equation (5)
Represented voltage V₇is also lowered, comparator 8
Voltage V of both input terminals of 9₇,V_FiveAbout V₇≦V_FiveNa
When a relationship is obtained, the comparator 89 is locked.
Return to level and solenoid SL₂demagnetizes and becomes electromagnetic
The switching valve 84 is returned to the neutral position N, and the pulley 6
The effective diameter of 9,70 is fixed. At this time, other
comparator 88 of is moved to high level.
No. This is because, as mentioned above, the presence of resistor Rb
Since the voltage V₇is the voltage V_Fivelowered below
Also, the voltage V at both input terminals of the comparator 88_Five,V₆
V between_Five＜V₆This is because a relationship cannot be established immediately.
It is. The effects of the above automatic control are shown in the graph in Figure 7.
If you look at it, the relationship line L shown by the solid line₁It's like
Therefore, the grain flow rate Q and the winnow rotation speed RP are proportional.
And the relationship line L in Figure 7₁The slope of the variable resistance
The set resistance value of VRa, therefore the variable resistance
Set voltage V by VRa₉and then compile
Positive side input terminal voltage V of regulator 88_Fiveand con
Negative input terminal voltage V of parator 89_Fivechange
You can change it by changing. Also, as mentioned above
As is clear from the resistor Rb is the comparator
88 negative input terminal voltage V₆Compare with
Positive side input terminal voltage V of terminal 89₇Appropriate amount of
With the difference given, one comparator 88 or
Even if 89 is moved from high level to low level,
If only this is done, the other comparator 89 or 88 will be locked.
to prevent being transferred from low level to high level.
It acts as a resistance to add a dead band.
By having a dead zone in the
Stable increase in number of rolls with hunting prevented.
Deceleration control is achieved. In the above, for automatic control, variable resistor VRb
The action was described assuming that the resistance value of is constant.
However, the degree of sorting, which is the proportion of straw waste in the grain, changes from moment to moment.
Selectivity detection circuit C₃output voltage V₃changes every moment
As mentioned above, servo control
The resistance value of variable resistor VRb changes momentarily by circuit 93.
It can be changed. In this way, the resistance value of variable resistor VRb is
By varying as the degree of selection varies, the formula
The voltage V expressed by (4) and (5)₆,V₇are each selected
The degree of discrimination decreases and the degree of selection detection circuit C₃output voltage V₃but
When the resistance value of variable resistor VRb becomes small, it becomes low.
conversely, the sorting degree increases and the sorting degree detection circuit C₃
output voltage V₃becomes small and the resistance value of variable resistor VRb
It is made to fluctuate so that it is raised as it becomes large.
Ru. As understood from the above, in equation (4),
Represented voltage V₆is the comparator 88 my
The input voltage of the eggplant side input terminal, and the number of rotations of the winch
This is to set the limit rotation speed at which the speed should be increased.
Also, the voltage V expressed by equation (5)₇is a comparison
The input voltage of the positive input terminal of the motor 89 is
Then, set the limit rotation speed at which the karaki rotation speed should be reduced.
It shall be determined. Therefore, the voltage V₆,V₇
may be increased or decreased as described above depending on the degree of selection.
In some cases, when the degree of sorting decreases, the grain flow
The comparator 88 is at a high level when the amount is smaller.
As the bell turns and the number of rotations of the karaki is increased,
comparator 8 at lower grain flow rate.
9 becomes high level and the rotation speed of the karaki is reduced.
On the other hand, when the degree of sorting increases, the grain flow rate increases.
comparator 88 becomes high level when
At the same time, the grain flow is increased.
The comparator 89 is at a high level when the amount is larger.
The number of rotations of the karaki is reduced.
Ru. In other words, the selection degree detection circuit C₃output voltage V₃
is grain flow detection circuit C₂output voltage V₂However, as mentioned above
As can be understood from the above, it depends on the grain flow rate.
To control the number of rotations of the chisel to increase or decrease to the set number of rotations.
It is used as a signal for selection, whereas it is used as a signal for
If necessary, change and correct the set rotation speed above, so that the
Change the number of rotations of the chisel to obtain the specified degree of sorting.
It is used as a signal for correction. The effect explained above can be explained using the graph in Figure 7.
As you can see, when the degree of selection decreases, the above relationship line
L₁For example, the relation line L₂If the grain flow rate Q is the same,
Even if it is only 1, the Karakine rotation speed RP will be further increased.
When something is changed and corrected and the degree of selection increases
is the above relationship line L₁For example, the relation line L₃like,
Even if the grain flow rate Q is the same, the winnowing rotation speed RP is higher.
Changes and modifications will be made to reduce
Ru. Next, turn off the automatic control switch 94.
An explanation of the effects during the transition period when turned on.
do. As mentioned above, the on/delay circuit 97
The grain culm is removed by turning on the conveyance detection switch 95.
After the conveyance of the grain is detected, the sorting section in the threshing section
Time lag until the threshed grains are sent to
is compensated for by delaying the excitation of the relay coil RC.
However, this on-delay circuit 97 also
The automatic control switch 94 is set from the beginning of the harvesting process.
Even when the machine is inserted, the number of rotations of the karaoke will start from a certain number of rotations.
It is assumed that the In other words, the part of harvesting work
When the automatic control switch 94 is turned on from the beginning
Also, the conveyance detection switch 95 is turned on and the harvested grain culm is
Even if conveyance is detected, the on-delay circuit 97
Only during the set delay time, the relay coil RC is demagnetized.
Relay switch RS₁,RS₂is the a contact
The state remains switched to the side. others
Therefore, turn on the automatic control switch 94 from the beginning of the work.
Even if it is, the number of rotations of the winnowing machine will not necessarily be controlled automatically.
The constant rotation speed described above for the case where
is determined by the resistance value of variable resistor VRd,
Relationship line L in Figure 7_pffStart from the rotation speed of
Therefore, the relationship line L shown in Figure 7_pffand the relationship line
L₁The intersection point St with
Then, the set delay time of the on-delay circuit 97
Automatically controlled steady-state operation begins after
will be obtained. In this way, harvesting work
Even if you turn on the automatic control switch 94 from the beginning,
The start of operation is carried out at a constant number of rotations of the winch.
By doing so, automatic control becomes stable. On the contrary, self
Turn off the dynamic control switch 94 and turn it off for a certain amount of time.
Number of rotations (relationship line L in Figure 7)_pffHarvesting work at
While the process is in progress, turn on the same switch 94.
When switching to automatic control, turn on the
The relay circuit 97 is already outputting a signal.
, the relay coil RC is immediately energized,
Automatically controlled operation will begin immediately. The control circuit shown in FIG.
controls the number of rotations of the karachi, and therefore the wind force of the sorting wind.
The above-mentioned advantages of the present invention can be obtained. Figure 3 shows
In the control circuit shown, the karaoke rotation speed detection circuit C₁
and resistance Ra, Rb, Rc are air volume values according to grain flow rate
It is used to set the servo.
The control circuit 93 and variable resistor VRb are the selection degree detection circuit.
Road C₃To correct the set air volume value according to the output of
It has become the property of 1st and 2nd bandpass
The filters 40 and 41 each have the first and second filters described above.
and a second wave device. As mentioned above
Grain flow rate and sorting degree sensor 31 located at
is about the grain in the flow path of the threshed grain.
one placed at a position where sorting is almost completed;
It's on. The variable resistance VRa is the comparator 88
The positive input terminal of the comparator 89 and the
Each input voltage V of the negative input terminal_Fiveto adjust
So, in reality, the input to both comparators 88 and 89 is
An electrical adjustment means to adjust the set rotation speed.
ing. Comparator 88, transistor TR₁Reach
and solenoid SL₁The circuit section equipped with
Increase air volume on stages 69, 70, 77, 84 (Figure 6)
The first actuating circuit section is configured to actuate in the direction.
Also, comparator 89, transistor TR₂Reach
and solenoid SL₂The circuit section with
the second operation of operating the adjusting means in the direction of reducing the air volume;
It constitutes the dynamic circuit section. Resistor Rb has a dead band
It has become an electrical means of supply. variable resistance
The circuit including VRd consists of the signal giving circuit described above.
has been completed. transistor tr₃, automatic control
Circuit including switch 94 and conveyance detection switch 95
constitutes the switching circuit described above. Next, we will introduce the automatic control mechanism explained above.
In the total automatic control system of the traveling harvester
To see specifically how it can be positioned
Below, with reference to Figures 8-15, the illustrated converter
A description of other automatic control mechanisms installed at the
I will clarify. First, the handling cylinder rotation speed sensor shown in FIGS. 2 and 8
-29 is the Karaoke rotation speed sensor 30 explained earlier.
It is configured similar to the
A rotor that is fixed and rotates integrally with the shaft 13a.
A plurality of magnets fixed to the inner peripheral surface of the
102 and a fixed position provided opposite to the rotor 101.
A reed switch 103 is provided. Lee
The switch 103 connects one terminal to the battery 1.
Connected to the positive terminal of 04 and other terminals
It is grounded, and as the rotor 101 rotates,
, each magnet 102 connects to the reed switch 10.
Magnetically turns on every time it passes through 3 positions.
I can't stand it. Connect to reed switch 103
A divider 105 is also connected to the integrator 105.
Amplifiers 106 are provided respectively, and the above
Members 101, 102, 103, 105, 1
By 06, the handling cylinder rotation speed detection circuit C_Fouris composed of
It is. The rotation speed of the handling cylinder 13 is set relative to the handling cylinder 13.
It increases or decreases as the load increases or decreases.
Yes, handling cylinder rotation speed detection circuit C_Fouris at its output end,
13 Voltage signal V proportional to the number of rotations of the handling cylinder_revOutputs
Ru. Next, the grain loss amount section shown in FIGS.
As shown in FIGS. 2 and 9, the sensor 32
Slanted backwards and downwards from the upper edge of the dust outlet end of the dust port 26.
It is arranged so that it hangs down. This grain loss amount
The sensor 32 controls the grain flow rate and sorting degree sensor described above.
Similar to the sensor 31, the pressure of piezoelectric ceramic disk, etc.
Equipped with an electronic element 32a, from the third dust exhaust port 26
Detects the contact pressure of the discharged dust and releases the corresponding pressure.
Outputs voltage spikes or voltage pulses according to
It is composed of the following. From the third dust exhaust port 26
The amount of grain mixed in the straw waste etc. that is discharged, that is, the amount of grain
In order to detect the amount of grain lost to waste,
As shown in Fig. 8, the grain loss amount sensor 32 is connected.
Subsequently, the bandpass filter shown in FIGS.
Similarly to the router 40, from the output pulse of the sensor 32
Filters only voltage pulses with a frequency corresponding to the grain
The voltage pulse corresponding to the straw dust is
Bandpass where it is cut and not transmitted to the secondary side
A filter 107 is provided. Similarly, the 8th
As shown in the figure, the above bandpass filter 10
7 through an amplifier 108 to supply voltage pulses.
When input, it turns on for a certain period of time and turns on at a certain frequency and
Monomulti 1 that outputs square voltage pulses with a wide amplitude
09 is provided. This mono multi 109
When connected to the output pulse of the monomulti 109
An integrator 110 is provided to integrate this
An amplifier 111 is provided connected to the integrator 110.
and above members 32,107-111
Therefore, the grain loss amount detection circuit C_Fiveis configured
Ru. This grain loss detection circuit C_Fiveis at its output end,
Voltage signal V proportional to the amount of grain loss_lpssOutput. The grain loss sensor 32, as shown, in particular
It is supported as follows. That is, as shown in Figure 9.
A fixture 112 is attached to the back of the sensor 32 so that the
A hinge plate 113 is provided, and the third
Mounted on the top surface of the dust port 26 with a fixture 114
Attach the hinge plate 113 described above to the plate 115 with a horizontal pin.
Rotatably supported at 116 to prevent grain loss.
The entire quantity sensor 32 is located around the horizontal pin 116.
It is supported so that it can rotate freely.
Ru. In particular, as mentioned above, it is supported rotatably.
The grain loss amount sensor 32 is connected to the hinge plate 11.
3 and the support plate 118 on the fuselage side frame 117
The tension spring 119 stretched between the
In the direction of entering the dust port 26, that is, in the direction of arrow B.
The rotation is energized in the direction that receives the wind pressure of the flowing dust exhaust wind.
It is. In addition, in the case of illustration, the support plate 11
A long hole 118a is formed in 8, and this long hole 118a is
The bolt 12 is passed through and screwed into the frame 117.
0 fixes the support plate 118 to the fuselage side frame 117
In order to do this, the support plate is
Change the position of 118 and apply force of tension spring 119.
It is designed so that it can be changed and adjusted. A grain loss sensor 32 is shown in FIG.
As explained in , the third part of the dust exhaust air path is
At the dust exhaust port 26, in the direction receiving wind pressure,
In this case, the rotation is caused by the tension spring 119.
Since the sensor 3 is energized,
2 is the wind pressure or wind speed, as shown in Figure 9.
Rotation position where the auxiliary force by screw 119 is balanced
In this process, lost grains are detected.
The grain loss amount sensor 32 detects the grain loss as the wind speed increases.
Take a posture that tilts away from the vertical posture.
This reduces the area affected by the wind, and conversely, when the wind speed decreases, lead to
A posture that approaches the upright posture direction and increases the area of wind blowing.
Take. For this reason, the sensor 32 is detected for the following reasons.
The detection performance is stabilized and the detection accuracy is improved. i.e.
Illustrated grain loss amount sensor placed in the dust exhaust air path
Unlike in the case of
The same sensor detects dust particles from low to high flow rates.
Especially when burdening the detection of grain volume lost up to
Detection performance becomes unstable at high flow rates with high wind speeds.
The amount of grain that contacts the sensor and the sensor output are
It becomes difficult to give an example. In contrast, the grain loss amount shown in the diagram is
As mentioned above, the wind blower 32 adjusts the wind receiving surface depending on the wind speed.
Since the product is changed to small and large, even if the wind speed changes
It is proportional to the product V x S of the wind speed V and the swept area S.
Dust that comes into contact with the sensor 32 surface per unit time
The amount is almost constant, and the sensor 32 is always almost constant.
Detection of grain loss for a fixed flow rate of waste matter
I will do it. For this purpose the grain loss sensor
32, it can exhibit stable detection performance and the unit amount equivalent
How much lost grain is included in the waste material?
Stable sorting detection based on accurate detection criteria
is achieved. Further, the grain loss amount sensor 32 is
It is installed at the No. 3 dust exhaust port at the 26th position, and the wind force is applied.
When not working, the rotation is biased by the spring 119.
Then, as shown in Figure 9 by the chain line, No. 3 dust removal is automatically started.
It is stored in the port 26 and prevents obstacles when the combine is running on the road.
Avoid inconveniences such as damage from hitting harmful objects.
It has become something. At this time, the amount of grain loss
The posture of the sensor 32 is such that the hinge plate 113 is above the dust exhaust port.
It is regulated by coming into contact with the end surface 26a. The electrical control circuit is illustrated in FIG.
The automatic control mechanism is the handling cylinder rotation speed detection circuit described above.
C_Fourvoltage signal from V_revand grain loss amount detection circuit C_Five
voltage signal from V_lpssand according to the illustrated combine
Change control of the vehicle speed and the opening degree of the dust feeding valve 15 described above.
Next, the illustrated controller
Vine vehicle speed change section, dust feed valve 15 and its opening adjustment
Let me explain specifically about the clause means. First, the vehicle speed change section is located at the front of the combine harvester shown in the figure.
The Mitsubishi, shown in Figure 10, installed on one side of the
installed in the case 121 (not shown in Figure 1).
As shown in Figure 10,
The gear meshing type transmission 122 constituting the transmission
The oil that makes up the main transmission for driving power is placed in the rear stage.
Equipped with a pressure clutch type transmission 123
It is made up of. Hydraulic clutch type transmission 1
23 are two parallel power shift shafts 124,
125, a gear meshing type transmission 122
The transmission gear 12 on the driven side transmission shaft 126 in
F meshed with 7,128 respectively₁Idle gear 1
29 and F₃Idle gear 131 is connected to power shift shaft 1
24, and the above-mentioned transmission gear
128 and F₁are meshed with the free rotating gears 129, respectively.
F₂The free rotating gear 130 and the R free rotating gear 132 are
It is provided by being loosely fitted onto the power shift shaft 125, and each of the above-mentioned
Each power shift shaft is arranged on the fitted gears 129-132.
124, 125, the respective free rotating gears 129, 13
0, 131, 132 selectively power shift axis 1
F to join to 24,125₁hydraulic clutch
133, F₂Hydraulic clutch 134, F₃Hydraulic Cratz
The configuration includes a clutch 135 and an R hydraulic clutch 136.
The selection of each hydraulic clutch 133-136 is
With selective actuation, F₁Power shift free rotating gear 129
By connecting to the shaft 124, the first forward speed F₁
The gear ratio of F₂Power shift the idle speed change gear 130.
2 forward speeds by coupling to the foot shaft 125
F₂The gear ratio of F₃Power the idle speed change gear 131
3 forward speeds by coupling to the shift shaft 124
F₃The gear ratio of R free rotating gear 132 is set to power
By connecting to the shift shaft 125, reverse 1st speed can be achieved.
It is possible to selectively obtain the gear ratio R of
It is becoming more and more like this. Both power shift shafts 124,
125 are fixed to the shafts 124 and 125, respectively.
The output gears 137A and 137B are
meshing with the gear 138 on the transmission output shaft
Then, the driving wheel 139 (FIG. 1) of the crawler 1
connected to the opposite direction. and each of the above hydraulic clutches 133-136.
However, Fig. 10 shows the hydraulic clutches 134 and 136.
As shown, power shift shafts 124, 125
The clutch housing 140 and each
Idle gears 129-132 have one side and one side, respectively.
Clutch the other friction elements 141, 142
It is supported only by sliding along the axial direction, and the return
The pin is urged to move in the backward direction by the spring 143.
The piston 144 is inserted into the oil chamber 1 behind the piston 144.
By supplying high-pressure hydraulic oil to 45, the friction
A clutch is established by obtaining pressure contact between elements 141 and 142.
It consists of a well-known multi-disc hydraulic clutch that obtains the actuation.
supply and discharge of hydraulic oil to and from the oil chamber 145.
However, multiple oil chambers at the ends of the power shift shafts 124 and 125
Oil passages in RM and power shift shafts 124 and 125
(not shown)
On the other hand, the hydraulic oil supply and discharge control mechanism is as follows.
It is structured as follows. That is, as shown in FIG.
46 to the pressure regulating valve 148 by the hydraulic pump 147.
Hydraulic clutch 133
-136 direction oil supply circuit 149 and hydraulic pressure
Oil tank 146 from clutch 133-136 direction
and a tank circuit 150 that returns hydraulic oil to the
Therefore, two electromagnetic switching valves 151 and 152 are provided.
, the solenoid switching valve 151 is F.₃hydraulic clutch 135
and R hydraulic clutch 136, electromagnetic switching valve 152.
is F₁Hydraulic clutch 133 and F₂hydraulic clutch 1
The secondary side port is connected to 34 respectively.
Ru. In addition, the electromagnetic switch located on the hydraulic pump 147 side
The valve 151 has 3 positions and 5 ports as shown in the figure.
This electromagnetic switching valve 151 is configured as a valve.
is the neutral position N₁So, F₃Hydraulic clutch 135 and
Connect R hydraulic clutch 136 to tank circuit 150
In addition to the function of
Function to connect to 152 directions via oil supply circuit 153
It also has the following. And as shown,
Each electromagnetic switching valve 151, 152 is at the neutral position N₁,
N₂In addition, one hydraulic clutch 133, 13
2 working positions for selectively lubricating 4,135,136
In other words, the electromagnetic switching valve 151 has a position of F₃oil
3rd forward gear position F for lubricating pressure clutch 135₃and
Reverse 1st gear position R where oil is supplied to the R hydraulic clutch 136
Also, the solenoid switching valve 152 is F₁hydraulic clutch
Forward 1st gear position F to refuel 133₁and F₂hydraulic crane
The forward 2nd gear position R where oil is supplied to the Tsuchi 134 is
Each has and has been. As described above, each electromagnetic switching valve 151,
152 to its neutral position N₁,N₂from solenoid
SLF₁, SLF₂, SLF₃, each by selective excitation of SLR
Working position F₁,F₂,F₃, selectively displace R
and one corresponding hydraulic clutch 133, 13
4,135,136 are selectively activated.
According to the hydraulic clutch type transmission 123, the equivalent
gear ratio F₁,F₂,F₃, the gear transmission state at R is
This will be obtained. As shown in Figure 12, all the solenoids mentioned above
SLF₁, SLF₂, SLF₃, the SLR is demagnetized and the hydraulic pressure is
To bring the clutch type transmission 123 into a neutral state
push button BN and each solenoid SLF mentioned above₁，
SLF₂, SLF₃, SLRs are selectively excited.
Each gear ratio F above₁,F₂,F₃, selectively obtain R
Push button BF for₁,BF₂,BF₃, BR and the illustrated controller
It is located near the Vine driver's seat (not shown).
Ru. Solenoid SLF mentioned above₁, SLF₂, SLF₃，
The SLR is installed in the control circuit shown in Figure 8, respectively.
Insert by connecting in parallel with a diode for surge absorption.
and the secondary side is grounded,
Push button BF above on the primary side₁,BF₂,BF₃, at BR
A manual switch that is turned on and normally off.
Tutsi SF₁,SCIENCE FICTION₂,SCIENCE FICTION₃，SR is connected. same
As shown in Figure 8, the above manual switch
science fiction₁,SCIENCE FICTION₂,SCIENCE FICTION₃, the power supply side terminal of SR is connected to the
Lee 104 is turned off using the above push button BN.
Connected via manual switch SN. Also
In the case shown, each push button BF₁,BF₂,BF₃, to BR
4 electromagnetic holding coils, one for each
C.F.₁,CF₂,CF₃, CR and 4 always off type
Manual switch SF₁',SCIENCE FICTION₂',SCIENCE FICTION₃′、SR′ and push button
BF₃,BF₂,BF₁Each turns off in conjunction with the operation.
3 switches that are always on
SW₁,SW₂,SW₃and connect as shown.
A one-point selection self-holding circuit Cm is provided, and each push button BF₁，
BF₂,BF₃Or if you press BR, the button will be pressed.
Belonging coil CF₁,CF₂,CF₃Or CR is excited
Each push button BF₁,BF₂,BF₃Or BR is in the pushed position,
In addition, each manual switch that is turned on with the push button
science fiction₁,SCIENCE FICTION₂,SCIENCE FICTION₃or SR is on, respectively
It is held and the same holding state is held when another push button is pressed.
BF₁,BF₂,BF₃Or it is erased by pressing BR.
It is designed so that Based on the above, pushbutton BN
When turning off the manual switch SN by
Solenoid SLF₁, SLF₂, SLF₃, energizing the SLR
is cut off, and both electromagnetic switching valves 151 and 152 become neutral.
position N₁,N₂Hydraulic clutch type transmission 1
23 is brought to the neutral state, and the button BF is pressed again.₁，
BF₂,BF₃, BR manual switch SF₁,SCIENCE FICTION₂，
science fiction₃, When selectively turning on one SR,
One corresponding solenoid SLF₁, SLF₂, SLF₃
Alternatively, the SLR may be selectively energized, correspondingly
Either of the operating positions of the electromagnetic switching valves 151 and 152
F₁,F₂,F₃Or select R and use hydraulic clutch type shifting.
Corresponding gear ratio F of device 123₁,F₂,F₃Or R
The speed change transmission state is obtained. Next, the above-mentioned dust feeding valve 15 will be explained in detail.
I will clarify. As shown in FIG. 13, the dust feeding valve 15
are vertical pins 1 on the top wall 12a of the handling chamber 12, respectively.
A plurality of pieces are supported rotatably around 54.
These dust sending valves 15 have their respective proximal ends.
and an interlocking plate provided on the upper surface side of the top wall 12a.
155, is pivotally connected by a vertical pin 156.
It is. Therefore, move the interlocking plate 155 in the direction indicated by the arrow in the figure.
When the dust valve 15 is moved forward and backward in this manner, the vertical pin 15
This results in rotational displacement around 4.
Due to the rotational displacement, the dust feeding valve 15 is placed on the handling cylinder 13
The arrangement of the handling teeth 14 arranged in a spiral manner
By changing the relative angle to the row direction,
Appropriately narrow down the dust exhaust passage, fully close it, or fully open it.
The rate of dust discharged from inside the handling room 12 is regulated accordingly.
Ru. The dust feeding valve 15 whose specific structure was explained above has the above-mentioned connection.
The moving plate 155 is connected to the dust feed valve adjustment lever 1 shown in FIG.
By operating the displacement using 57, the opening degree can be changed.
It is said that the adjustment is made. And Figure 14
As shown in the figure, pivot the end of the cylinder body to the fuselage.
A single-acting hydraulic cylinder 158 is provided.
The piston rod 1 of this hydraulic cylinder 158
58a to the dust feed valve adjustment lever 157 as shown.
A hydraulic system that maintains the dust feed valve 15 at the standard opening is connected to
The hydraulic cylinder 158 from the extended state of the cylinder 158
By supplying hydraulic oil to the oil chamber 158b of the cylinder 1
58 in the direction of arrow C in Fig. 14.
The lever 157 can be rotated to close the dust feeding valve 15.
As shown, it is illustrated. After this dust feeding valve 15 is closed,
Opening is done by draining the hydraulic oil from the oil chamber 158b.
Hydraulic cylinder 1 for lever operation with spring 158c
This is done by causing 58 to expand. And the first
As shown in Figure 14, release from the oil tank 146.
The hydraulic oil set by the valve 159 is
For supplying oil to the oil chamber 158b of the cylinder 158.
A second hydraulic pump 160 is provided.
Hydraulic oil is supplied by the hydraulic pump 160.
Electromagnetic switching valve 16 between 160 and hydraulic cylinder 158
1, it is done selectively.
Ru. That is, the electromagnetic switching valve 161
Normally under neutral position N,
Both the oil chamber 158b and the hydraulic pump 160 are connected to the oil tank.
Connect to the cylinder 146 and move the hydraulic cylinder 158 to the extended position.
to maintain the neutral position N and excite the solenoid SLc.
The working position I is displaced by the hydraulic pressure.
The pump 160 is connected to the oil chamber 158b and the hydraulic system is
An operating position I for reducing the cylinder 158,
We are prepared. In the automatic control mechanism shown in FIG.
Handling cylinder rotation speed detection circuit C_Fourvoltage signal from V_revand
The aforementioned grain loss amount detection circuit C_Fivevoltage signal from
V_lpssAccording to the above-mentioned solenoid SLF₁，
SLF₂,SLF₃selectively energizes the hydraulic
Shifting the clutch type transmission 123 in the forward direction of the vehicle
Vehicle speed is controlled by selectively changing the speed ratio.
Then, the solenoid SLc described above is selectively excited and magnetized.
Then, set the dust supply valve 15 to the standard opening state and the closed state.
The operation of the threshing section 8 is controlled by selectively moving the threshing section 8 to
That's what happened. The configuration of the control circuit for this purpose is
Before explaining, let me first explain the control logic.
Then, first, the grain loss is as shown in Figure 15a.
In this case, there is an excessive loss zone Hg that is greater than a certain amount of loss.
With an under-loss zone Lg less than a certain amount of loss,
It is divided into two zones, and the above fixed loss
The amount is determined by the grain loss amount detection circuit C._FiveThe output voltage signal of
No. V_lpssAs shown in Figure 15a, at a voltage corresponding to
loss reference voltage V_defIt is becoming. Also, the handling barrel rotates
As shown in Figure 15b, the number is
Proper rotation speed zone M and excessive rotation speed higher than that
Large rotation speed zone H_rFrom the appropriate rotation speed zone M
Underspeed zone L where the speed is low_r3 zones with
above the appropriate rotation speed zone M.
The upper limit and lower limit are the handling cylinder rotation speed detection circuit C._Fourof
The output voltage signal V_revat a voltage corresponding to the 15th
Proper zone upper limit voltage V as shown in figure b_pnaxas well as
Appropriate zone lower limit V_pnioIt is becoming. and control
The logic consists of six constraints as shown in Table 1 below.
Divided into areas, dust feeding valve 1
5, which controls the opening degree and vehicle speed.
It is being used.

[Table] To explain the specific circuit configuration with reference to Figure 8, first, the output voltage signal of the Glen loss detection circuit _C5 .
A first comparator 162 to which V _lpss is supplied to the positive input terminal is provided, and the negative input terminal of the first comparator 162 is provided with a power supply voltage that is adjusted by a variable resistor 163. Then, the loss reference voltage V _def described above is introduced. Therefore, this first comparator 162
compares the above two voltages V _lpss and V _def , and calculates the voltage
When V _lpss becomes larger than the voltage V _def (V _lpss > V _def ), that is, an excessive loss voltage signal V _gh is output in the excessive loss zone Hg shown in FIG. 15a.
In addition, the output voltage signal V _rev of the handling cylinder rotation speed detection circuit C ₄
A second comparator 164, which is supplied to the positive input terminal, and a third comparator 165, which is supplied to the negative input terminal, are provided. Among these, the power supply voltage is connected to the negative input terminal of the second comparator 164 through the variable resistor 16.
6, the appropriate zone upper limit voltage V _pnax is introduced. On the other hand, the power supply voltage is further adjusted to the positive input terminal of the third comparator 165 by a variable resistor 167. By performing the adjustment, the above-mentioned appropriate zone lower limit voltage V _pnio is introduced. Therefore, the second comparator 164 compares the two voltages V _rev and V _pnax x introduced to its input terminal, and the voltage V rev is higher than the voltage V _rev .
When the voltage becomes larger than V _pnax (V _rev > V _pnax ), that is, the excessive rotation voltage signal V _rh is output in the excessive rotation speed zone Hr shown in FIG.
The comparator 164 compares the two voltages V _rev and V _pnio led to its input terminal, and the voltage V rev is higher than the voltage V _rev .
When it becomes smaller than V _pnio (V _rev <V _pnio ), that is, in the under-rotation speed zone L _r shown in FIG. 15b, an under-rotation voltage signal V _r l is output. In order to automatically excite the solenoids SLF ₁ , SLF ₂ , SLF ₃ for changing the vehicle speed in the forward direction of the vehicle, the relay coils RCF ₁ , RCR ₂ ,
The relay coils RCF ₁ , RCF _{2 ,} RCF ₃ each connected in parallel with a surge absorption diode have their primary sides connected to the manual switch SN described above and the functional relay switch RSp described later. and SWauto, a switch with automatic vehicle speed control.
and a relay switch RSa with a function to be described later, and a power supply circuit Cba led from the battery 104.
are connected to each other. relay coil
The secondary sides of RCF ₁ , RCF ₂ , and RCF ₃ are grounded via switching transistors TRF ₁ , TRF ₂ , and TRF ₃ , respectively.
A relay switch connected in parallel with TRF ₁ , TRF ₂ , TRF ₃ and turned on by excitation of relay coils RCF ₁ , RCF ₂ , RCF ₃ to maintain the relay coils RCF ₁ , RCF ₂ , RCF ₃ in an excited state. RSF ₁ ′,
RSF ₂ ′ and RSF ₃ ′ are provided, respectively. And the power supply circuit Cba mentioned above also has a relay coil
Relay switches RSF ₁ , RSF ₂ , which are turned on by excitation of RCF ₁ , RCF ₂ , and RCF ₃ , respectively
They are connected to the primary sides of solenoids SLF ₁ , SLF ₂ , and SLF ₃ via RSF ₃ , respectively. Based on the above, each transistor TRF ₁ , TRF ₂ ,
When turning on TRF ₃ by inputting an on operation signal to its base, each corresponding relay coil RCF ₁ ,
RCF ₂ , RCF ₃ are energized from the power supply circuit Cba, and the respective relay coils RCF ₁ , RCF ₂ , RCF ₃ are energized, and thereby the respective relay switches RSF ₁ ,
Each solenoid is turned on by turning on RSF ₂ and RSF ₃ .
SLF ₁ , SLF ₂ , and SLF ₃ are connected to the power supply circuit Cba, and each solenoid SLF ₁ , SLF ₂ , and SLF ₃ can be excited. Next, the solenoid SLc, which closes the dust feeding valve 15 by its excitation, is connected in parallel with a surge absorption diode and inserted into the control circuit shown in FIG. is connected to the battery 104, and the secondary side is grounded via the switching transistor TRa. Therefore, the solenoid SLc is energized when the transistor TRa is turned on by inputting an ON operation signal to its base. First, second and third comparators 162,1
In order to selectively turn on the transistors TRF ₁ , TRF ₂ , TRF ₃ , and TRa according to the output signals V _gh , V _rh , and V _r l of the transistors 64 and 165, the following circuit configuration is adopted. That is, as similarly shown in FIG. 8, the first, second and third NAND circuits 16
8, 169, and 170 are provided, and among these, the input terminal of the first NAND circuit 168 is
The first comparator 162 is connected via the inverter 171, and the second comparator 164
The first comparator 162 is directly connected to the input terminal of the second NAND circuit 169.
and a second comparator 164 are directly connected to each other, and a third NAND circuit 170 is connected directly to the second comparator 164.
A first comparator 162 is connected via an inverter 172, and a second comparator 164 and a third comparator 165 are each directly connected to the input terminal of the . Transistor TRa
In order to give an ON operation signal to the base of the transistor TRa, a monomulti 173 is provided whose output end is connected to the base of the transistor TRa. Upon input of the operation signal, this monomulti 173 operates for t seconds and generates a rectangular voltage pulse. It is said to generate Pa. At the input end of this monomulti 173, a second
NAND circuit 169 and third NAND circuit 170
are connected via an inverter 174. In addition, transistors TRF ₁ , TRF ₂ ,
In order to provide speed increase signals and deceleration signals in the _three directions of the TRF, a first pulse generator 1 for generating speed increase signals is required.
75 and a second pulse generator 17 for generating a deceleration signal.
6 is provided. In addition, another monomulti 177 that operates for t seconds and generates a rectangular pulse Pb in response to the input of an operation signal is provided, and the input end of the other monomulti 177 is connected to the output end of the inverter 174. At the same time, the output terminal of a NAND circuit 179, which is provided by connecting the input terminal to the output terminal of the monomulti 173 via an inverter 178, is connected via an inverter 180, and a third comparator 165 is also connected. , mono- _multi 177 direction. The input terminal of the first pulse generator 175 has a first
NAND provided by connecting each output end of the NAND circuit 168 and other monomulti 177 to the input end
The output end of circuit 181 is connected. Further, to the input terminal of the second pulse generator 176, the third comparator 165 is connected via the diode _D1 , and the output terminal of the inverter 180 is connected. Each pulse generator 175, 176
receives the input signal, intermittents the voltage pulses Pc and Pd, and outputs them to the speed-up signal transmission circuit Cu or the deceleration signal transmission circuit Cd guided in the direction of the transistors TRF ₁ , TRF ₂ , and TRF ₃ . Based on the circuit configuration described above, the monomulti 173 operates when the excessive rotation voltage signal V _rh is output from the second comparator 164 and when the second comparator 164 and the third comparator 16
When there is no output of the signals V _rh and V _r l from 5,
Excessive loss voltage signal from first comparator 162
When Vgh is output, it operates for t seconds, turns on the transistor TRa for t seconds, and excites the solenoid SLc for t seconds. Furthermore, when the second comparator 164 outputs the excessive rotational voltage signal V rh while the first comparator 162 does not output the signal V _gh , the first pulse generator 175 outputs the excessive rotation voltage signal V _rh .
The voltage pulse Pc, which is a speed-up signal, is output to the speed-up signal transmission circuit Cu. Furthermore, this signal Pc
Once the under-rotation voltage signal V _r l is output from the third comparator 165, the monomulti 17
7, no output will be made for t seconds, which is the set time to the monomulti 177. On the other hand, the second pulse generator 176 receives the excessive loss voltage signal Vgh from the first comparator 162 regardless of whether or not the signals V _rh and V _r l are output from the second comparator 164 and the third comparator 165. When output, it operates and outputs a voltage pulse Pd, which is a deceleration signal, to the deceleration signal transmission circuit Cd, and this signal Pd output is transmitted to the second comparator 1.
When the excessive rotation signal voltage V _rh is output from 64, the second comparator 164 and the third comparator 16
When there is no output of the signals V _rh and V _r l from the mono multi 173, the operation is performed after the completion of the operation of the mono multi 173, that is, after t seconds, which is the set time for the mono multi 173, has elapsed. The speed-up signal transmission circuit Cu and the deceleration signal transmission circuit Cd described above include transistors TRF ₁ , TRF ₂ ,
It is connected to the base of TRF ₃ as follows. That is, transistors TRF ₁ , TRF ₂ ,
Connect each output end to the base of TRF ₃ ,
First, second and third NAND circuits 183, 18
4,185 is provided, and the deceleration signal transmission circuit Cd
is the input terminal of the first AND circuit 183 and the second
The speed increasing signal transmission circuit Cu is connected to the input terminal of the AND circuit 184, and the third
It is connected to the input end of the AND circuit 185. The input end of the first AND circuit 183 and the input end of the third AND circuit 185 are further connected to the power supply circuit Cba via the relay switch RSF ₂ , and the second AND circuit 184 Further, the power supply circuit Cba is connected to the input terminal of the power supply circuit Cba via the relay switch _RSF3 . In addition, the fourth signal transmission circuit Cu is connected to the input terminal.
An AND circuit 186 is also provided, and this fourth
The input terminal of the fourth AND circuit 186 is further connected to the power supply circuit Cba via the relay switch RSF ₁ , and this fourth AND circuit 186
is connected to the base of the transistor TRF ₂ together with the output terminal of the second AND circuit 184. Considering the circuit configuration described above, each transistor TRF ₁ , TRF ₂ , TRF ₃ is selectively turned on as follows. In other words, from the deceleration signal transmission circuit Cd and the relay switch
The first AND circuit 183, which is provided to receive signal input from the power supply circuit Cba through RSF ₂ , is configured to operate when the hydraulic clutch type transmission 123 is in the forward 2nd speed _F2 state and the relay switch RSF ₂ is turned on. When the deceleration signal Pd is input in this state, it operates and turns on the transistor _TRF1 . A second circuit is provided to receive signal inputs from the deceleration signal transmission circuit Cd and from the power supply circuit Cba via the relay switch _RSF3 .
The AND circuit 184 is connected to the hydraulic clutch type transmission 1
23 is in forward 3rd gear _F3 state, relay switch
When the deceleration signal Pd is input while RSF ₃ is on, it operates and turns on the transistor TRF ₂ . Next, a third AND circuit 185, which is provided to receive signal inputs from the speed increase signal transmission circuit Cu and from the power supply circuit Cba via the relay switch RSF ₂ , is connected to When the speed increasing signal Pc is input while the relay switch RSF ₂ is on in the speed F ₂ state, it operates and turns on the transistor TRF ₃ . Furthermore, a fourth AND circuit 186 is provided to receive signal inputs from the speed increase signal transmission circuit Cu and from the power supply circuit Cba via the relay switch RSF ₁ . In the F ₁ state and the relay switch RSF ₁ is on, the speed increase signal is generated.
It operates when Pc is input, turning on transistor _TRF2 . Each transistor TRF ₁ above,
Depending on the ON operation of TRF ₂ and TRF ₃ , each solenoid SLF ₁ , SLF ₂ and SLF ₃ is energized as described above, and the solenoid switching valves 151 and 152 (first
1), the hydraulic clutch type transmission 12
3 is selectively brought to the transmission states of 1st forward speed F ₁ , 2nd forward speed F ₂ , and 3rd forward speed F ₃ , so the AND circuits 183, 184, 185, 186
The gear shift of the hydraulic clutch type transmission 123 in response to the input of the deceleration signal and the speed increase signal is performed as shown in Table 2 below.

[Table] The relay switches RSF _{1 ′} , RSF 2 ′, RSF _{2 ′} , RSF 1 ′, RSF 2 ′, and RSF _{2 ′} are used to self-hold each relay coil RCF ₁ , RCF ₂ , and RCF 3 in the excited state when changing the gears described above.
The following circuit is provided to turn off RSF ₃ ' and temporarily release the above self-holding. That is, a relay coil RCa that constitutes a relay together with the relay switch RSa is connected in parallel with a diode for surge absorption, and when this relay coil RCa is energized, the relay switch RSa is turned off. Said power supply circuit
The power supply to Cba is temporarily cut off, and the above-mentioned self-retention is temporarily released. relay coil
RCa is connected to the battery 104 on the primary side, and to the switching transistor TRA on the secondary side.
It is grounded through. The above transistor
Mono multi 1 by connecting the output end to the base of TRA
87 is provided, and at the input end of this monomulti 187, first, second, third, and fourth AND signals are provided.
The output terminals of the circuits 183, 184, 185, and 186 are connected via diodes that allow signal transmission only in the monomulti 187 direction. Therefore, any AND circuit 183, 184, 1
From 85 or 186 transistors TRF ₁ , TRF ₂
Or when the TRF ₃ on operation signal is output,
Monomulti 187 works and transistor
An on-operation signal is given to the base of the TRA, and the relay coil is turned on by the on-operation of the transistor TRA.
When RCa is energized, the relay coil RCa is energized, and the self-holding of the relay or relay coil RCF ₁ , RCF ₂ or RCF ₃ is released. The operating time set for the Mono Multi 187 is extremely short (for example, 0.1-0.5 seconds), and after this time has passed, the relay coil RCa is de-energized and the power supply circuit
Cba is energized again. In the case shown in the figure, when the vehicle speed automatic control switch SWauto is turned on, the vehicle is started at the first forward speed _F1 of the hydraulic clutch type transmission 123. 188 are provided. This mono multi 18
8 has its input end connected to the secondary side of the above switch SWauto, and its output end connected to the transistor
It is connected to the base of TRF ₁ . Therefore, when the vehicle speed automatic control switch SWauto is turned on, the transistor TRF ₁ is turned on for the operating time of the monomulti 188, and the first forward speed F ₁ is obtained by energizing the solenoid SLF _1. After that, the increase/decrease speed is speed signal Pc,
Vehicle speed is automatically controlled depending on the presence or absence of PD.
An automatic pilot lamp L is connected to the secondary side of the automatic vehicle speed control switch SWauto, and a diode _D2 to prevent the output signal of the monomulti 188 from being transmitted to other parts is a transistor.
It is provided in the base circuit of TRF ₁ . Next, in order to ensure safety by prioritizing manual control over automatic control of vehicle speed, the relay coil RCp that constitutes the relay together with the relay switch RSp.
is connected in parallel with a surge absorption diode,
It is provided. This relay coil RCp has its primary side connected to the battery 104, and its secondary side grounded via a switching transistor TRp. A comparator 189 whose output terminal is connected to the base of the transistor TRp is provided, and the positive input terminal of this comparator 189 receives a voltage Vr obtained by dropping the power supply voltage Vcc by a resistor r ₃ and further dropping by a resistor r ₂ . ₂ has been introduced. Further, the negative input terminal of the comparator 189 is connected to the manual switches SF ₁ , SF ₂ , SF ₃ ,
A voltage Vr ₁ obtained by lowering the power supply voltage Vcc by a resistor r ₁ is introduced from a power supply circuit connected in the SR direction, and the relationship between the above two voltages Vr ₁ and Vr ₂ is as follows from the push button BF ₁ When none of BF ₂ , BF ₃ , and BR are pressed and the circuit into which resistor r ₁ is inserted is in a non-grounded state, Vr ₁ > Vr ₂ and any one of the push buttons BF ₁ ,
It is set so that Vr ₁ <Vr ₂ when BF ₂ , BF ₃ or BR is pressed and current is conducted to resistor r ₁ . Therefore, when the vehicle speed is manually controlled by operating the push buttons BF ₁ , BF ₂ , BF ₃ , BR, a manual priority signal is output from the comparator 189 and input to the base of the transistor TRp. takes on state and relay coil
RCp is excited and the relay switch RCp is thereby activated.
OFF, even if the automatic vehicle speed control switch SWauto is on, power is not supplied to the power supply circuit Cba, making automatic control impossible and giving priority to manual control. In FIG. 8, TRs is a transistor that grounds the output terminal of the second comparator 164, and the output terminal of the third comparator 165 is connected to the base of this transistor TRs. Therefore, even if the second comparator 164 outputs the over-rotation voltage signal Vrh for some reason while the third comparator 165 is outputting the under-rotation voltage signal Vrl, the voltage signal Vrh is Since TRs is in the on state, it is extinguished by the ground,
Safety is ensured. The solenoid SLc is selectively excited in the manner described above, and the acceleration signal and deceleration signal are transmitted from the first and second pulse generators 175 and 176 in the manner described above to the acceleration signal transmission circuit Cu, This signal is output to the deceleration signal transmission circuit Cd, and the solenoids SLF ₁ , SLF ₂ , and SLF ₃ are selectively excited as described above by the signal and the discrimination action of the AND circuits 183 , 184 , 185 , and 186 . The control circuit shown in FIG. 8 is designed to achieve the control logic as listed in Table 1 above. Therefore, during the harvesting operation using the illustrated combine harvester, the other automatic control mechanism described with reference to FIGS. 8-15 exhibits the following advantages. That is, as is clear from Table 1, when the grain loss is low and the degree of sorting in the threshing section 8 is high, and the handling drum rotation speed is high and there is plenty of room in the threshing section 8, as in the control region, The vehicle speed is increased to improve work efficiency, and conversely, when the rotation speed of the handling drum is low and overload is applied to the threshing section 8, the vehicle speed is reduced to improve work efficiency, as shown in the control range. Accuracy is improved and overload removed. In addition, as shown in the control range, when there is no overload on the threshing section 8 and the grain loss is high and the degree of sorting in the threshing section 8 is poor, first the dust feed valve 15 is
As a result, the handling room 1 of the threshing section 8
The ratio of dust discharged from within the dust filter 2 is reduced to the maximum, thereby improving the degree of sorting, that is, improving the work accuracy. In this way, by controlling the operation of the threshing section 8,
If the grain loss is high and the degree of sorting is not improved even after the above-mentioned t seconds, e.g. 5-10 seconds, the dust feed valve 1
5 is closed, the operation control of the threshing section 8 is stopped, and the vehicle speed is reduced, thereby improving work accuracy. In this way, in the control area, first the dust feed valve 15
The operation of the threshing section 8 is controlled by closing, that is, the control is performed so that the work efficiency is not reduced, and only when the appropriate working condition is still not obtained, the vehicle speed deceleration control is switched to, thereby maintaining work efficiency as high as possible and work accuracy. control is achieved. As described above, a harvesting operation in which both precision and efficiency are improved in a well-balanced manner is automatically achieved. In particular, since the above-mentioned automatic control of the vehicle speed is carried out in a stepped manner by switching gears in the forward direction of the hydraulic clutch type transmission 123, the frequency of increase and deceleration of the vehicle speed is moderate. suppressed by
Therefore, the grain culm conveyance posture is not disturbed, and the control effect can be greatly increased by stepped vehicle speed control. In the above description, the dust feeding valve 15 is replaced by the hydraulic cylinder 15.
8 drive to control the switching between the standard opening state and the fully closed state, but in other cases, the dust sending valve 15 is driven by a motor to freely change the opening state from the fully open state to the fully closed state. You can do it as well. As can be understood from what has been described above, the automatic control mechanism according to the present invention shown in FIG. The system is independent of the automatic control mechanism shown in FIG. 8, which automatically controls the vehicle speed of the combine and the amount of dust discharged from the threshing section 8 using the control index as a control index, thereby appropriately controlling the work efficiency and work accuracy of the combine. Therefore, as mentioned above, the automatic control mechanism shown in Fig. 3 has an adverse effect on work efficiency, work accuracy, and their control in the total control system of the combine harvester. It has become an integrated part of the system. As described above, the self-propelled harvesting machine according to the present invention maintains a high degree of sorting without adversely affecting the control of work accuracy and work efficiency, and ensures stable machine operation. In order to achieve this, the operation is automatically controlled.

[Brief explanation of drawings]

1 is a schematic side view of a combine harvester according to an embodiment of the present invention, FIG. 2 is a schematic vertical side view of a portion of the combine shown in FIG. 1, and FIG. 3 is a schematic side view of a combine harvester shown in FIG. 4 is a schematic perspective view showing one sensor mechanism installed in the combine harvester shown in FIG. 1, and FIG. FIG. 6 is a schematic diagram for explaining the operation, showing the main parts of the sensor mechanism shown in FIG. 1. FIG. 7 is a graph for explaining the operation of the operation control circuit shown in FIG. 3, and FIG. 8 shows other sensor mechanisms and operation control mechanisms provided in the combine harvester shown in FIG. 1. A block diagram and an electric circuit diagram, FIG. 9 is a longitudinal cross-sectional side view showing the No. 3 dust exhaust port of the combine shown in FIG. 1, and FIG. 10 is a side view showing the vehicle speed change section of the combine shown in FIG. FIG. 11 is a partially exploded longitudinal sectional front view; FIG. 11 is a hydraulic circuit diagram showing one hydraulic circuit provided in the combine harvester shown in FIG. 1;
The figure is a perspective view showing a push button operation section for changing vehicle speed provided in the driver's seat in the combine harvester shown in FIG. 1, and FIG. 13 is a perspective view showing a part of the threshing section in the combine harvester shown in FIG. 1. , Figure 14 is the first
A vertical sectional view and a hydraulic circuit diagram showing the dust feeding valve opening adjustment mechanism in the combine harvester shown in the figure, Fig. 15a,
b is an explanatory diagram showing the control range setting in the operation control mechanism shown in FIG. 8, respectively. 4... mowing blade, 8... threshing section, 12... handling room, 1
3... Handling barrel, 16... Crimp net, 18... Chaff sieve, 19... Grain sieve, 21... Tang winch, 23... First mouth, 30... Kara winch rotation speed sensor, 31... Grain flow rate and sorting degree sensor, 31
a... Piezoelectric element, 31b... Nut part, 33...
Karaoke shaft, 34...Rotor, 35...Magnet,
36...Reed switch, 37...Integrator, 38
...Battery, 40...First band pass filter, 41...Second band pass filter, 4
4, 45...Mono multi, 48, 49...Sample and hold circuit, 51...Feed screw,
52... DC motor, 55... Bar, 56... Support frame, 57... Square bar, 60... Push-pull wire, 61... Angle adjustment lever, 64...
Lock plate, 68...drive shaft, 69...pulley, 69b...movable pulley half, 70...
Pulley, 70b...Movable side pulley half, 71
...V-belt, 77...Hydraulic cylinder, 84...
Solenoid switching valve, 88, 89...Comparator, 9
1, 92... Earth circuit, 93... Servo control circuit, 93a... Servo amplifier, 93b... Servo motor, 94... Automatic control ON switch, 95...
...Conveyance detection switch, 97...On-delay circuit, C ₁ ...Kingachi rotation speed detection circuit, C ₂ ...Grain flow rate detection circuit, C ₃ ...Sorting degree detection circuit, SL ₁ , SL ₂
... Solenoid, TR ₁ , TR ₂ ... Switching
Transistor, Ra, Rb, Rc, Rd, Re...resistance,
VRa, VRb, VRc, VRd...variable resistance, RS ₁ ,
RS ₂ ...Relay switch, RC...Relay coil.

Claims (1)

[Scope of Claims] 1. A self-propelled harvester that reaps grain culms planted in the field while self-propelled within the field, threshes the harvested grain culms, and sorts the threshed grains. A grain flow rate sensor that detects the grain flow rate and a sorting degree sensor that detects the degree of sorting from the proportion of straw waste in the grains are provided. This is an air volume adjustment device that increases or decreases the air volume of the sorting air to a set air volume according to the grain flow rate. A self-propelled harvesting machine characterized by being equipped with an air volume adjustment device that adjusts the air volume to obtain an air volume that achieves a predetermined degree of sorting. 2. The self-propelled harvesting machine according to claim 1, wherein the grain flow rate sensor and the sorting degree sensor are each configured as a sensor that outputs a detected value as an electric signal, and the air volume adjustment A self-propelled harvester characterized in that the device is provided with an electric control circuit that receives the electric signal and controls the operation of the air volume adjusting means. 3. The self-propelled harvesting machine according to claim 2, wherein the grain flow rate sensor and the sorting degree sensor each sense contact pressure of grain or straw waste to generate an electric signal. A self-propelled harvesting machine characterized by being configured with a sensor equipped with a piezoelectric element. 4. The self-propelled harvesting machine according to claim 3, wherein the piezoelectric element of the grain flow rate sensor and the piezoelectric element of the sorting rate sensor are common, and both sensors are combined into one. a first wave device forming a combined grain flow rate and sorting rate sensor and connected to the grain rate rate and sorting rate sensor to filter only the electrical signal generated by the grain abutment; and a straw waste. A self-propelled harvesting machine characterized by being provided with a second wave device that filters only the electric signal generated by contact. 5. The self-propelled harvester according to claim 4, wherein the grain flow rate and sorting degree sensor is
1. A self-propelled harvesting machine, characterized in that it is installed in a flow path for threshed grains at a position where sorting of the grains is almost completed. 6. The self-propelled harvester according to claim 5, wherein the grain flow rate and sorting degree sensor is
A self-propelled harvester characterized in that a threshing part is supported along the width direction so that its displacement can be adjusted. 7. The self-propelled harvester according to claim 5 or 6, wherein the grain flow rate and sorting degree sensor is supported so that its inclination angle with respect to the flow direction of threshed grains can be changed and adjusted. A self-propelled harvesting machine characterized by the following: 8. A self-propelled harvester according to any one of claims 2 to 7, which comprises a sample-and-hold circuit for smoothing an electrical signal corresponding to grain flow rate and sorting. A self-propelled harvester characterized in that it is provided with another sample-and-hold circuit for smoothing an electrical signal corresponding to the frequency. 9. The self-propelled harvesting machine according to any one of claims 2 to 8, wherein the electric control circuit is configured to change and adjust the set air volume value according to the grain flow rate. A self-propelled harvesting machine characterized by being equipped with an electrical adjustment means that enables the harvesting machine to operate. 10. The self-propelled harvester according to any one of claims 2 to 8, wherein the electric control circuit includes a first device that operates the air volume adjusting means in the direction of increasing the air volume. An operating circuit section and a second operating circuit section that operates the air volume adjusting means in the direction of decreasing the air volume are provided, and a set air volume value that operates the first operating circuit section and a setting that operates the second operating circuit section. A self-propelled harvesting machine characterized by being provided with an electric means for imparting a dead zone, which makes the air volume values different from each other. 11. A self-propelled harvester according to any one of claims 2 to 10, which is capable of inputting an electric signal to the electric control circuit to make the volume of sorting air constant. A signal imparting circuit is provided, and a switch means is provided for selectively connecting either the grain flow rate sensor, the sorting degree sensor, or the signal imparting circuit to the electrical control circuit. A self-propelled harvester with special features. 12. The self-propelled harvester according to claim 11, comprising a switching circuit for controlling the circuit switching operation of the switching means,
The apparatus is equipped with a manually operated automatic control turn-on switch and a conveyance detection switch for detecting whether or not the reaped grain culm is being conveyed to the threshing section, and only when both of these switches are in the on state, the switch means is activated to output the signal. A self-propelled harvesting machine characterized by being provided with a switching circuit configured to switch from the input circuit side to the grain flow rate sensor and sorting rate sensor side. 13. The self-propelled harvesting machine according to claim 12, characterized in that an on-delay circuit is added to the conveyance detection switch in the switching circuit. 14. The self-propelled harvesting machine according to any one of claims 11 to 13, wherein the signal imparting circuit includes an electric signal for making the flow rate of the sorting air constant. A self-propelled harvester characterized by being equipped with an electrical adjustment means that allows changing and adjusting values.