JPS5835648B2 - reaping harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to reaping and harvesting machines such as binders and combines.

With this type of reaping/harvesting machine, for example, in the case of a binder, the operator often picks up and arranges tied stem culms while the binder is self-propelled, and then releases them onto the ridge; Various tasks such as replacing bags and discharging full bags from the aircraft are often carried out at the department, and there is a risk that the aircraft will continue to advance without realizing that it has reached the end of one stroke. In order to solve this problem, in recent years, when the aircraft reaches the end of one stroke, the transmission clutch that connects and disconnects the power transmission to the traveling gear is automatically disengaged. A reaping and harvesting machine was devised that stopped running, allowing the operator to concentrate on the above-mentioned work with peace of mind and improving work efficiency.

However, when this reaping and harvesting machine is stopped at the end of one stroke, a worker in the field may come close to the stopped reaping and harvesting machine and accidentally come into contact with the reaping part. In other words, the end of one stroke in the field, where there are no planted stem culms, is a place where workers come and go. A new technical problem has arisen in that there is a particularly high possibility that the reaping section of the harvester will come into contact with the worker, and there is a high risk of injury to the worker due to the reaping section in the driven state.

The present invention aims to improve work efficiency by selecting a work mode in which the reaping/harvesting machine is stopped at the end of one stroke and a work mode in which the reaping/harvesting machine is continuously reaped without stopping, depending on the situation,
Furthermore, it is an object of the present invention to improve safety by eliminating the above-mentioned technical problem newly caused by stopping at the end of the stroke, that is, the drawback that there is a risk of injury to the operator.

That is, in the meil harvester of the present invention, the automatic cutting mechanism for the first transmission clutch for traveling and the automatic on/off mechanism for the second transmission clutch for the reaping section are installed in the same stem culm provided at the front of the machine. An automatic stop running state in which both the first transmission clutch and the second transmission clutch are automatically disconnected based on the detection of the presence/absence of the stem culm in conjunction with the presence/absence detection device, and the first transmission state based on the presence or absence of the stem culm. The present invention is characterized in that, while the clutch is maintained in the engaged state, only the second transmission clutch can be automatically switched to an automatic reaping driving state in which the clutch is engaged and disengaged.

In other words, when the reaping length of the stroke is relatively long, and when the operator has time to do other work other than steering, both the first transmission clutch and the second transmission clutch are automatically engaged. If the machine is switched to the automatic stop running state, the machine will automatically stop at the end of one stroke, allowing the operator to concentrate on other tasks with peace of mind.

Furthermore, in cases where the length of one trip in the field is relatively short and the operator does not have time to perform other tasks than operation, in a work format in which the operator concentrates only on operation, the If you switch to the automatic reaping mode where only the second transmission clutch is automatically engaged and disengaged while the first transmission clutch remains engaged, the machine will not stop at the end of one stroke and will continue to operate. This means that the work can be done with ease, and work efficiency can be improved.

In particular, the greatest feature of the present invention is that when the machine switches to the automatic stop running state and stops, the reaping section is also configured to automatically stop. In addition to having the above-mentioned advantages, it also has the advantage of eliminating the risk of injury to workers at the reaping section of a reaping harvester that is stopped at the end of a stroke where workers come and go. By stopping the machine at the end of one stroke in the field, we solved a new technical problem and were able to provide a highly safe reaping and harvesting machine.

Embodiments of the present invention will be described in detail below with reference to illustrative drawings.

The figure shows a walking binder in which a reaping section 4 is connected to the front part of the main body, which consists of a rear engine 1, a traveling transmission case 2 that receives power from the engine 1, and a control handle 3 extending to the rear. show.

While traveling on traveling wheels 5, 5 as a traveling device pivotally supported at the lower part of the traveling mission case 2, the plant is planted at the reaping section 4 using a lifting device 6 provided obliquely at the front. After pulling up the standing stem culm and tying the base end of the plant, the cut stem culm is sent along the guide cover 7 to the side-to-side binding device 8, where it is bundled in appropriate amounts and tied into tied stems. It is configured to release the culm to the outside of the fuselage.

Between the engine 1 and the traveling transmission case 2 (as shown in FIG. 2), a transmission bell N2a is wound around the transmission bell N2a. A tension pulley 10 is provided.

A first transmission clutch 11 is configured to turn on/off power transmission to the transmission case 2 by moving the tension pulley 10 toward and away from the bell N2a, thereby switching the running wheels 5, 5 between an operating state and a non-operating state. has been done.

Further, another transmission belt l-12b is wound between the traveling transmission case 2 and the mesh opening 4, and is pivoted to the tip of the swinging arm 13 opposite to this transmission belt 12b. A tension pulley 14 is provided.

And the belt t-12b of the tension pulley 14
A second transmission clutch 15 is configured to turn on/off power transmission from the mission case 2 to the reaping section 4 by approaching and separating from the reaping section 4, thereby switching the reaping section 4 between an operating state and a non-operating state.

A first transmission clutch 11 is attached to both the swing arms 9 and 13.
and a contact receiving part 9' as a first operated mechanism and a second operated mechanism for turning on and off the second transmission clutch 15,
13' are provided, and these contact receiving parts 9', 13'
Opposed to is a rotation operation shaft 16 as one operated part.
A partially disk-shaped cam plate 17 is provided fixedly attached to the cam plate 17 .

The rotation of the operating shaft 16 allows the cam plate 17 to be placed in a posture in which it does not come into contact with both the contact receiving portions 9' and 13/, a posture in which it makes contact only with the contact receiving portion 9', and a posture in which it makes contact with both the contact receiving portions 9' and 13/. Receiving part 9'
, 13', and the first and second transmission clutches 11.
An operating mechanism 18 is configured to perform switching operations reversibly in this order: a disengaged state of 1°15, an engaged state of only the first transmission clutch 11, and an engaged state of both clutches 11.15.

In addition, this binder has two positions: one in which it projects with a lateral force across the stem culm introduction path a formed along the lateral side of the pulling device 6, and the other in which it swings backward from the point of contact with the stem culm. The device is configured so that the traveling wheels 5, 5 are automatically stopped and the reaping section 4 is automatically driven and stopped by detecting the presence or absence of a planted stem culm by a swing sensor 19 which can be switched freely to the operating shaft. A pair of first and second electric motors 20a and 20b which are interlocked and connected to the motor 16 through gears and drive the electric motors to rotate in the forward and reverse directions are controlled by the electric circuit described below. has been done.

To explain FIG. 3, a first transmission clutch operation circuit A, a second transmission clutch operation circuit B, a first electric motor circuit C, and a second electric motor circuit are connected in parallel to the DC power supply 2H. ing.

The first transmission clutch operation circuit A is provided with a first switch 22 that can be operated to switch between three positions: manual position, disengaged position, and automatic position, and the automatic position side circuit includes:
A normally open first contact 23a of a first relay 23 (described later) and a normally open electric switch 24 are provided which are brought into contact with the rocking sensor 19 and closed when the rocking sensor 19 is in the rearward rocking position. , the first relay 23 is provided which acts both in the manual position side circuit as well as in the automatic position side circuit.

The second transmission clutch operation circuit B is provided with a second switch 25 that can be switched to three positions: automatic position, disengaged position, and manual position, and the automatic position side circuit is equipped with the swing sensor 19. This sensor 19 is activated during backward swinging posture.
A normally open type electric switch 26 is provided which closes when contacted with a normally open type second contact 2 of the first relay 23 which also acts in the automatic position side circuit as well as the manual position side circuit.
3b and a second relay 27 are provided.

When the cam plate 17 swings toward the input side of the first transmission clutch 11 and the second transmission clutch 15, the cam plate 17 comes into contact with the first electric motor circuit C, and becomes open. The normally open second limit switch 28, the normally open third contact 23c of the first relay 23, the first electric motor 20a, the normally open first contact 27a of the second relay 21, and the cam plate 17. First transmission clutch 11
A circuit is provided in which a normally closed first limit switch 29 is placed in parallel and is brought into contact with the first limit switch 29 to open the circuit when the transmission clutch 11.

The second electric motor circuit includes the first relay 2.
The normally closed fourth contact 23d of No. 3 and the cam plate 17 are connected to the input side of the first transmission clutch 11 or both transmission clutches 11.
．． a circuit in which a normally open fourth limit switch 30 is placed in parallel with the fourth limit switch 30, which is brought into contact with the limit switch 30 when the limit switch 30 swings toward the entrance side of the switch 15, the second electric motor 20b;
The normally closed second contact 27b of the relay 27 and the cam plate 1
A normally closed third limit switch 31 is provided which comes into contact with the transmission clutches It and 15 and becomes open when the two transmission clutches It and 15 swing to zero.

Then, from the disengaged state of both clutches 11.15, the first
When the switch 22 is set to the manual position, the first electric motor circuit C is activated and the first limit switch 29
The first electric motor 20a is operated until the first transmission clutch 11 is in an open state, and the first transmission clutch 11 is
Switch to ON state.

In that state, the first limit switch 29 is set to the cam plate 17? The first
The fourth limit switch 28, which is provided very close to the limit switch 29, is in contact with the cam plate 11 and is about to be closed.

At this time, when the second switch 25 is set to the manual position, the first contact 27a of the second relay 2T is closed, the first electric motor circuit C is activated again, and the second limit switch 30 is opened. The first electric motor 20a is operated until the second transmission clutch 15 is also engaged via the operating mechanism 18.

Further, when the second switch 25 is set to the off position from the engaged state of both clutches 11.15, the circuit for the second electric motor is activated and the second electric motor 20b is turned on until the fourth limit switch 28 is in the open state. When activated, only the first transmission clutch 11 is brought into the engaged state via the operating mechanism 18.

At this time, when the first switch 22 is further set to the off position, the second electric motor circuit is activated and the third
The second electric motor 20b is operated until the limit switch 31 is opened, and both transmission clutches 11 and 15 are disengaged via the operating mechanism 18.

With the first transmission clutch 11 in the engaged state, when the swing sensor 19 swings backward due to contact with the planted stem culm, if the first switch 22 is set to the automatic position, the machine will move in one stroke. After completing the reaping and harvesting work, the vibration sensor 19
When the clutch 1 protrudes laterally, the circuit for the second electric motor is automatically activated, and the first transmission clutch 1 is activated as described above.
The automatic cut-off mechanism that automatically turns off 1 is activated, and the aircraft is automatically stopped.

Furthermore, if the second switch 25 is set to the automatic position while the first transmission clutch 11 is in the engaged state as described above, when the rocking sensor 19 swings backward, the second transmission clutch 15 is brought into the engaged state; When the rocking sensor 19 is in the sideways protruding position, the automatic on/off mechanism of the second transmission clutch 15 that disengages the second transmission clutch 15 is activated, and the automatic on/off operation of the second transmission clutch 15 is activated. A state is revealed.

Note that 32 in FIG. 3 is a safety circuit that stops the operation of the above-mentioned electric circuit when the voltage of the power supply 21 is below a certain level.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the reaping harvester according to the invention,
Figure 1 is a plan view of the binder, Figure 2 is a. Figure 3 is a side view showing important operating states of the first and second transmission clutches, and Figure 3 is an electrical circuit diagram. 4... Reaping section, 11... First transmission clutch, 15... Second transmission clutch, 19...
... stem culm presence/absence detection device.

Claims (1)

[Claims] 1. An automatic disconnection mechanism for the first transmission clutch 11 for traveling;
An automatic on/off mechanism of the second transmission clutch 15 of the reaping section 4,
An automatic stop running state in which both the first transmission clutch 11 and the second transmission clutch 15 are automatically disconnected based on the detection of the presence or absence of a stalk culm in conjunction with the same stalk culm presence/absence detection device 19 provided at the front of the machine; It is possible to switch between an automatic train running state in which only the second transmission clutch 15 is automatically engaged and disengaged while maintaining the first transmission clutch engagement state based on the presence or absence of a stem culm. A reaping harvester characterized by having this configuration.