JPS58286B2 - reaping harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reaping harvester that automatically stops when there are no stem culms to harvest.

Nowadays, completely unmanned machines are expensive, so with the intention of semi-automation, the machine automatically stops when there are no more stalks to harvest, and then transfers the stopped harvester to the next row of stalks. In order to accommodate this, semi-automatic harvesting machines that move forward and turn around have been developed.

However, in such a harvester, it is necessary to move the machine forward and turn the machine, and there is a problem that the operation when restarting the machine becomes cumbersome.

The present invention aims to solve this problem.

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

1 and 2 show a side view and a schematic plan view of a reaping and binding machine (binder) as an example of the reaping and harvesting machine of the present invention,
A lifting device at the front of the aircraft1. Pulling frame 2, reaping device 3,
A reaping section 6 consisting of a horizontal conveyance device 4, a binding device 5, etc. is provided, and behind this reaping section 6 are a mission case 8 equipped with a pair of left and right running wheels 7a, 7b, an engine 9, a control bundle 10, etc. It is deployed.

In addition, the front end of the pulling frame 2 enters between the planted stem culm rows located on both the left and right sides of this pulling frame 2, and the machine advances toward the stem culm row by contact with the left and right stem culms. A tracking guide 11 for tracking is fixedly installed, and a lifting device 1
A guide rod extends forward from the front end of the culm to pull up the stem culm to be harvested and prevent it from escaping to the right outside of the device 1.

Further, a guide rod 13 is provided on the left side of the rear part of the machine body, which comes into contact with the planted stem culm row when moving backward.

Further, the traveling wheels 7a and 7b are operated by switching the gear transmission in the mission case 8 by operating a shift operation lever 14 as a forward operation tool provided on the steering bundle 10.
As shown in FIG. 3, it is configured to be capable of shifting into three forward speeds and one reverse speed.

The traveling wheels 7a, 7b are configured to be driven at the same speed on the left and right when moving forward, and so that the wheel 7a on the binding device 5 side is driven slightly faster than the other wheel 7b when moving backward.

And a gear shift operation lever 14 as a forward/reverse switching operation tool.
At the second forward speed position F2, which is the cutting speed, and the reverse position R, the forward state is automatically switched to reverse in the absence of a stem culm by the control described below, and in the backward state, the detected stem culm The aircraft is configured to automatically stop when it runs out.

That is, at the switching point between the forward second speed position F2 and the reverse speed position R, both positions F2. A U-shaped lever switching device 15 with a spacing that allows the lever to move between R and R is connected to an electric motor 16 capable of forward and reverse driving and a rack and pinion mechanism 1.
The switching tool 15, the electric motor 16, and the rack and pinion mechanism 17 constitute an automatic switching mechanism for the lever 14.

The electric motor 16 is configured to be driven in forward and reverse directions based on changes in the contact state between the planted stem culm and a sensor 18 pivotally mounted on the pulling frame 2 so as to be swingable back and forth. .

The sensor 18 is energized to a neutral posture n protruding laterally and laterally, and changes from a backward leaning posture r to a neutral posture n;
and a change from the forward leaning posture f to the neutral posture n are electrically detected and determined, and these detection results are transmitted to the control circuit 19 of the electric motor 16, as shown in the block diagram of FIG. has been done.

Further, the lever switching tool 15 is attached with a printed conductive plate 21 that slides into fixed brushes 20..., and the position of the lever switching tool 15 is detected by changes in the contact state between the brushes 20... and the conductive plate 21. A detection mechanism 22 is configured.

This position detection result is also transmitted to the control circuit 19.

Moreover, between the pulling device 1 and the pulling frame 2, there is a device for detecting the presence or absence of a stem culm, which is pressed and swung backwards when it comes into contact with a planted culm, and returns to swing forward when the contact is released. A sensor 26 for detecting the presence of a stem culm is provided, and power is transmitted to the reaping section 6 based on the operation of the sensor 26 to detect the presence of a stem culm.
The power transmission to the cutting section 6 is cut off based on the stem culm absence detection operation in step 6.

In the above configuration, one embodiment of the present invention is configured as follows.

That is, inside the mission case 8 to which driving force is transmitted from the mounted engine 9, there are left and right running wheels 7a.

A left/right steering clutch (not shown) is incorporated to turn the aircraft in any direction by cutting off the transmission of driving force to either of the bundles 10. 10 respectively.

Of these operating levers 27, 27, a switch 28 is provided which is operated in conjunction with the gripping operation of the operating lever 27 on the uncut side of the stem culm. The detection signal from the switch 2 is configured to be input to the discriminator 29, and the switch 2
The control circuit 19 is actuated by the input operation signal of 8 and the detection signal that the shift operating lever 14 is located at the neutral position N, and rotates the electric motor 16 to move the shift operating lever 14 forward. Switch to the gear position and automatically move the aircraft forward.

Next, the automatic reaping operation will be sequentially explained.

(B) Forward travel for reaping (see Figure 4) When the speed change operation lever 14 is set to reaping speed (2nd forward speed) F2 and the machine is directed toward the outermost planted stem row A, the lower surface of the reaping section 6 While in sliding contact with the field, the following guide 11 provided at the front end of the pulling frame 2 is inserted between the stem culm row A and the adjacent planted stem culm row B, and both the stem culm rows A and B are connected to each other. Said guide 1
Due to the contact guidance action of 1, the machine moves forward following the stem culm row A while introducing it between the lifting frame 2 and the lifting device 1.

Then, the reaping section 6 is driven by the operation of the stem culm presence/absence detection sensor 26, and automatic reaping travel is performed.

Also, at this time, the sensor 18 assumes a backward tilted attitude r due to contact with the adjacent planted stem culm row B.

(b) Reverse return travel (see Figure 4) When the cutting of the stem culm row A is completed and the machine protrudes an appropriate distance forward from the end of the adjacent planted stem culm row B, the sensor 18 detects the stem culm. It comes off the final end stock b' of row B and swings back to the neutral position n, and this operation is detected and the control circuit 19 is activated to drive the electric motor 16 in the reverse direction, and accordingly, the lever switching tool 15 is moved to The shift operation lever 14 is switched from the second forward speed position F2 to the reverse position R.

Then, the position detection mechanism 22 of the switching tool 15 detects that the lever switching tool 15 has switched the gear shift operation lever 14 to the reverse position R, and accordingly, the control circuit 19 is activated, and the lever switching tool 15 is activated as shown in FIG. The electric motor 16 is driven in normal rotation until it returns to the neutral position shown by the solid line in the middle.

When the machine is switched to the reverse state as described above, the speed of the right running wheel 7a is set slightly higher than that of the left running wheel 7b, so the aircraft is given the ability to move toward the adjacent planted culm B side. However, the guide rod 1 installed on the left side of the rear of the aircraft
3 comes into contact with the stem culm row B, and the aircraft automatically moves backward and returns along this stem culm row B.

Also, at this time, the sensor 26 detects the absence of a stem culm, so the drive of the reaping unit 6 is cut off, and the sensor 18 detects the absence of a stem culm.
The contact with causes the forward leaning posture f.

(c) Machine stop operation (see Figure 4, c) When the machine crosses the end (starting end) of the stem culm row B, the sensor 18 comes off the rearmost stem and swings back to the neutral attitude n, and this operation is detected, the control circuit 19 is activated, and the electric motor 16 is driven to rotate in the normal direction.Accordingly, the lever switching device 15 moves in the Y direction, and the speed change operation lever 14 is switched from the reverse position R to the neutral position N. , the aircraft will stop.

Furthermore, the movement of the lever switching tool 15 is detected by the position detection mechanism 22, the electric motor 16 is driven in the reverse direction, and only the lever switching tool 15 returns to its neutral position again.

2) Forward steering operation (see Figure 4 D) When the steering operation lever 27 located on the uncut side of the harvester stopped in reverse is operated, the switch 28 is activated and this signal is activated. In addition to being input to the discriminator 29, a neutral position detection signal from the shift operation lever position detection mechanism 22 is also input to the discriminator 29, and with these rain detection signals,
The control circuit 19 is activated to rotate the electric motor 16, switch the speed change operation lever 14 to the forward speed change position, and automatically move the aircraft forward, and the above-mentioned steering operation causes the aircraft to move toward the adjacent position. Toward the beginning of the planted stem culm.

Although the electric motor 16 is used in the embodiment to switch the speed change operating lever 14, it is also possible to use known means such as a solenoid.

The means using a solenoid includes a switching drive source that operates in the absence of a stem culm to switch the shift lever 14 to a desired shift range, and a shift drive source that operates in conjunction with the operation of the steering clutch operating lever 27. It is conceivable to use the lever 14 as a drive source for switching to the forward direction.

In summary, the reaping and harvesting machine according to the present invention is a reaping and harvesting machine configured to stop the machine based on the detection result of the absence of a planted stem culm, in conjunction with the operation of a steering clutch that changes the direction of the machine. The present invention is characterized in that the aircraft is configured to automatically move the aircraft forward by switching the forward operation tool of the stopped aircraft to the forward side.

In other words, the steering clutch and the forward operation tool are configured to work in conjunction with each other to steer the machine, which has stopped due to the lack of stem culms to be harvested, to align with the primary stem culm row. The aircraft automatically moves forward in the desired direction simply by operating the steering clutch, which eliminates the need for forward operations when restarting, making operation easier.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the reaping harvester according to the invention,
FIG. 1 is an overall side view of the binder, FIG. 2 is a schematic overall plan view of the binder, and FIG. 3 is an enlarged plan view of the speed change operation section.
4A, 20C and 20D are schematic plan views showing sequential operating states, and FIG. 5 is a block diagram of the control mechanism. 14...Forward operation tool.

Claims (1)

[Claims] 1. In a reaping harvester configured to stop the machine based on the detection result of the absence of a planted stem culm, the stopped machine is operated to move forward in conjunction with the operation of a steering clutch that changes the direction of the machine. A reaping harvester characterized in that it is configured to automatically advance the machine body by switching the tool 14 to the forward side.