JPS6339210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a harvesting machine, and in particular, to accurately grasp the storage status of a grain tank in which harvested grains are stored, and to automatically stop the harvesting operation according to the storage amount. This paper proposed a harvesting machine that made this possible.

A harvesting machine such as a large combine harvester transports the threshed grain to a grain tank installed at the rear of the machine, such as a topsatsuka, using a grain-lifting conveyor, and opens the paddy discharge port installed in the topsatsuka at an appropriate time. The paddy is dropped into a paddy bag attached to the paddy discharge port. In order to detect the amount of grain stored in the topsatsuka, conventional harvesters are equipped with a sensor on the upper side of the topsatsuka that is activated by the pressure of the grains, and the detection signal from this sensor causes the machine to stop running, or when a buzzer is activated. There is a system that uses an alarm or a lamp to notify the driver that the amount of grain in the topsatsuka is nearing full and to call attention to it.
No. 138955). However, when the running stops, it is necessary to drain the paddy into bags in the center of the field in order to recover, which interrupts the harvesting process and is inefficient. If the crops are left unattended, collecting the harvest becomes a hassle. In addition, the driver learns how much grain is accumulating in the topsatsuka through the above-mentioned warning, and reduces the traveling speed of the machine or temporarily stops the machine to suppress the increase in grains inside the topsatsuka, and also prevents the accumulation of grains in the paddy bag. It is necessary to perform a discharge operation. In addition, if you are aware of the warning and are distracted by other operations of the machine, there is a risk that the inside of the topsatsuka will be full of grains, and the grains will also clog the grain frying conveyor, making it impossible to perform the harvesting operation. In addition to various operations, the operator of the harvester must also pay sufficient attention to warnings that are issued in relation to the amount of grain in the topsack, which places a burden on the operator. When it is clogged, it takes a lot of effort to remove it, reducing work efficiency. In a combine harvester in which operations related to harvesting are automated, there is a problem in that an appropriate manual operation is required to be performed immediately each time the above-mentioned alarm occurs.

The present invention has been made to solve these problems. The harvester according to the present invention has sensors for detecting when the amount of stored grains has reached the placement level in a tank storing harvested grains arranged at three different levels. If the level detection sensor issues a detection signal, an alarm is activated, and if the intermediate level detection sensor issues a detection signal, the running section is activated after the grain culm row is harvested. The present invention is characterized in that the traveling section, the reaping section, and the threshing section are configured to be stopped when the sensor for detecting a high level outputs a detection signal.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A harvester according to the present invention will be explained below based on drawings showing embodiments thereof.

Figure 1 shows a reaping section 1, a traveling section 2, a driver's seat 3, a threshing section 4 with a built-in handling barrel (not shown), and a threshing section 4.
Fig. 2 is a right side external view of the combine, which includes a grain frying conveyor 6, etc., which conveys the grains sent from the No. 1 conveyor provided at the lower part of the machine to the topsucker 5 provided at the upper right side of the rear part of the machine. This topsatsuka 5 has three paddy discharge ports 5a, 5a, 5a which are opened downward and are spaced apart from each other by an appropriate length, and are arranged in parallel at the bottom of the three ports. A paddy bag without a paddy bag can be attached, and the paddy bag can be placed on the pedestal 7. Paddy discharge ports 5a, 5
a, 5a have shutters for opening and closing the paddy discharge port 5a, and during harvesting, only one of the paddy discharge ports 5a is opened, and when one paddy bag is full, it is closed. The other paddy discharge port 5a is opened to allow the grains to fall into other paddy bags, so that each paddy bag can be filled with grains.

As shown in FIG. 2, the top cover 5 has three sensors L, M, and H located approximately on the same line with the front wall surface 5b located on the front side of the fuselage and spaced apart by an appropriate length in the vertical direction. are installed in order from the bottom.
The sensor L located at the bottom is installed slightly above the bottom surface 5c of the top cover 5 excluding the hopper part, and the sensor H located at the top is located slightly below the ceiling surface 5d. , sensor M is installed at a height midway between sensors H and L, and these sensors L, M,
H is the lower level of the grain within Toppsatka 5, respectively;
It is designed to detect medium and high levels respectively. As shown in FIG. 3, these sensors L, M, and H each include a pressure-sensitive member 15 that can be repeatedly deformed, such as a diaphragm or a bellows, and
It consists of a switch member 16 such as a limit switch that opens and closes depending on the deformation of the pressure sensitive member 15, and a casing 17 to which these members are attached. Therefore, when the grains accumulated in the top sack 5 reach any of the positions of the sensors L, M, and H, the pressure-sensitive member 15 is pushed toward the switch member 16 by the horizontal pressing force of the grains at that position. is deformed to close the switch member, and the sensors L, M,
The presence of grains at the H position is rapidly detected.

FIG. 4 is an electrical circuit diagram of the main parts of the harvester according to the present invention. In FIG. 4, 8 is a battery whose negative electrode is grounded to the machine body, and 9 is a combine key switch that turns on and off the electricity to the electric circuit. Ha,
Ha', Ha'' are normally open contacts of sensor H, La, La' are normally open contacts of sensor L, Ma, Ma' are normally open contacts of sensor M, and Ta is a time limit contact of timer T. 10 is a buzzer. TC is a timer coil for timing, 11 is a solenoid, LL, LM, LH
is an alarm lamp for warning display. Sb
In the above-mentioned threshing section 4, a detection switch consisting of a limit switch, etc., is provided on the discharge side of a feed chain (not shown) for feeding grain culms to a handling cylinder, and detects grain culms being conveyed by the feed chain. It is a closed contact, and D is a diode. And the normally open contacts Ha and La are connected in parallel,
An alarm 10 is connected in series to them, a normally open contact La' and an alarm lamp LL are connected in series, a normally open contact Ma, a normally closed contact Sb and a timer coil TC are connected in series, and a normally open contact Ma' and an alarm lamp LL are connected in series. alarm lamp
LM is connected in series with time-limited contact Ta and normally open contact
Ha' is connected in parallel and connected in series with the solenoid 11, and furthermore, the normally open contact Ha'' and the alarm lamp
The LHs are connected in series, and their respective series circuits are connected in parallel, with both ends connected between the positive and negative electrodes of the battery 8 via the key switch 9. Further, the diode D has a cathode connected to the connection between the normally open contact La and the alarm 10, and an anode connected to the connection between the normally open contact Ma and the normally closed contact Sb. The alarm lamps LL, LM, and LH described above are arranged side by side in the above order on the operation panel in front of the driver's seat 3. Further, the timer T is set to a predetermined time period, for example, a time period until the amount of grain in the threshing section 4 is reduced to a predetermined amount after the grain culms transported by the feed chain are exhausted, and the timer T is set to a predetermined time period. T.C.
After the above-mentioned time period has elapsed after the
Ta is closed. Further, the solenoid 11 is connected to the fuel supply system of the engine that drives the reaping section 1, traveling section 2, and threshing section 4 of the combine, and by energizing the solenoid 11, the fuel supply to the engine is cut off and the reaping section 1, The driving of the traveling section 2 and the threshing section 4 can be immediately stopped.

When performing a harvesting operation using a combine harvester equipped with the safety device according to the present invention configured as described above,
First, the key switch 9 is turned on. As a result, while the combine is driven and travels, the grain culms harvested by the reaping section 1 are conveyed to the threshing section 4 by a vertical conveyance chain (not shown) and transferred to the above-mentioned feed chain of the threshing section 4. The grain culms transferred to the feed chain are conveyed by the feed chain, fed to a handling cylinder, and threshed. When the grain culm is continuously transported by the feed chain, the normally closed contact Sb of the detection switch provided on the discharge side of the feed chain continues to be open. On the other hand, the threshed grains pass through a sorting mechanism (not shown) in the threshing section 4, are conveyed from the No. 1 conveyor to the topsatsuka 5 by the grain frying conveyor 6, and are continuously transferred to the paddy bag from any of the paddy discharge ports 5a. fall into.

By the way, if the traveling speed of the machine is fast or the rice is growing well, and the amount of threshed grains in the threshing section 4 is greater than the amount of grains released from the paddy discharge port 5a, the amount of the difference will remain in the topsatsuka 5. If the shutter of the topsatsuka 5 is closed to prevent grains from falling into the paddy bag, the amount of grains in the topsatsuka 5 will gradually increase. When the grain quantity now reaches the position of the lowest sensor L that detects the low level, the sensor L is pressed and closes its normally open contacts La and La'.
This energizes the alarm 10 and the alarm lamp LL to issue an alarm and at the same time illuminate the alarm lamp LL indicating that the grain has reached a lower level. Further, when the amount of grains in the topsack 5 continues to increase and reaches the position of the sensor M that detects the intermediate level, the sensor M closes its normally open contacts Ma and Ma' in the same manner as described above. But as a result, the alarm lamp LM is energized, and the already lit alarm lamp LL is energized.
At the same time, the alarm lamp LM lights up. When the grain culm row being reaped has been completely reaped and the feed chain stops transporting the grain culms, the normally closed contact Sb of the detection switch immediately closes, and the timer coil
After the TC is energized and the specified time has elapsed,
The time limit contact Ta is closed and the solenoid 11 is energized, thereby stopping the engine and stopping the traveling section 2, the reaping section 1, and the threshing section 4. By setting the time limit of the timer T appropriately, it becomes possible to process the waste straw that has passed through the feed chain and to transport the threshed grains in the threshing section 4 to the topsacker 5.

By the way, if sensor S ₂ does not operate for some reason, or if the row of grain culms being harvested is long and contact Sb continues to be open for a long time even after contact Ma is closed, the The grain mass continues to increase until it reaches the position of sensor H, which detects a higher level. Then, as above, the normally open contact of sensor H
Ha, Ha′, Ha″ are closed at the same time, and the alarm 10,
The solenoid 11 and the alarm lamp LH are energized at the same time, and the engine is stopped at the same time as the alarm and display are activated, and all harvesting operations are immediately stopped. That is, the harvesting operation is stopped just before the amount of grains in the topsacker 5 is full, and the grain frying conveyor 6 is stopped.
Prevent clogging of grains etc. In addition, the amount of grain decreases due to the release into the paddy bag, and the sensor L,
When M and H are no longer pressed and the detection signal disappears, the alarm operation disappears immediately.

According to this embodiment, a detection switch for detecting grain culms being conveyed by the feed chain was provided on the unloading side of the feed chain, but instead of this detection switch, an automatic steering switch provided in the automatic combine harvester was installed. The steering sensor may be used to detect the end of reaping of the grain culm row. however,
In this case, the time limit of timer T should be slightly longer. In this case as well, when the grain culm to be harvested disappears, the detection switch operates in the same way as the detection switch, and the warning and display operations can be performed in the same way. The sensor L,
Although M and H are constructed by a diaphragm and a limit switch, it goes without saying that the same effect can be obtained by using a pressure sensitive element, a photoelectric element, or the like.

Furthermore, in the embodiment described above, when the sensor M issues a detection signal due to the grain culm reaching an intermediate level, the solenoid 11 is energized via the timer T to stop the engine.
1 is replaced with a solenoid of a solenoid valve in a hydraulic circuit for controlling the left and right side clutches, and the solenoid is energized to shut off both side clutches and stop only the drive of the running section. Good too.

Since the harvesting machine of the present invention is configured and operated as described above, the driver can accurately grasp the amount of stored grain by alarm activation or stopping of running, etc., and also can prevent the grain tank from becoming full. Harvesting operations are automatically stopped before harvesting, allowing the driver to concentrate on other operations. In addition, even if a medium-sized sensor issues a detection signal, it will stop running after the grain culm row that is being harvested has been harvested, so there will be no reduction in work efficiency, and the grain will not be discharged from the grain tank. The present invention has excellent effects such as the paddy bag containing the paddy can be left on the headland and there is no trouble in collecting it.

[Brief explanation of the drawing]

Fig. 1 is a right side external view of the combine harvester according to the present invention, Fig. 2 is a perspective view of the topsack, Fig. 3 is a partial sectional view of the sensor attached to the topsack, and Fig. 4
The figure is an electrical circuit diagram of the main parts of the harvester according to the present invention. 1... Reaping section, 2... Traveling section, 4... Threshing section,
5...Topsatsuka, 6...Grain frying conveyor, 8...
...Battery, 9...Key switch, 10...Alarm, L, M, H...Sensor, La, La', Ma,
Ma', Ha, Ha', Ha''...Normally open contact, Sb...Normally closed contact, Ta...Time limit contact, TC...Timer coil, LL, LM, LH...Alarm lamp, D...
diode.

Claims (1)

[Claims] 1 In a tank that stores harvested grains, sensors are placed at three different levels to detect when the amount of stored grains has reached the specified level, and the sensor for detecting the lower level detects If a signal is issued, an alarm is activated, and if the intermediate level detection sensor issues a detection signal, the traveling section is stopped after the grain culm row being harvested is finished, and the high level level is detected. 1. A harvesting machine characterized by being configured to stop a traveling section, a reaping section, and a threshing section when a detection sensor issues a detection signal.