JPS58842B2 - Automatic reaping harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention allows a machine running on left and right running wheels to automatically follow and move forward along an adjacent row of planted culms, and then mowing the adjacent planted culm rows or mowing. Automatically returns backwards to the plant row, crosses the end of the adjacent planted stem culm row in reverse, then switches to forward motion and automatically temporarily turns to the starting end of the adjacent planted stem culm row. This invention relates to an automatic reaping/harvesting machine configured to perform reaping by repeatedly moving back and forth.

In the automatic reaping/harvesting machine described above, circularity is temporarily given at the beginning of the forward movement to direct the stalks toward the starting end of the row of planted stems.
If a steering clutch, which is a general rotation means, is used, its structure becomes complicated and its operation control becomes difficult.

Further, when the distance between the rows is different, it is necessary to change the traveling time at the initial stage of forward movement, but with the steering clutch type, it is difficult to adjust and change this.

The present invention is intended to enable such temporary rotation at the initial stage of forward movement and adjustment of its operating time with a simple structure, in which the traveling wheel on the rotation direction side and its axle are The wheels are flexibly connected to allow relative rotation at a predetermined phase angle, the phase angle can be adjusted, and the other running wheel is fixed to the axle.

In other words, if a change is made from reverse to forward motion through relative rotational flexibility between the axle and the traveling wheels, the traveling wheels in the direction of rotation will automatically become non-driven, and the vehicle will be able to temporarily move in accordance with the amount of flexibility. It can be easily obtained at the appropriate timing at the beginning of forward movement, and it is relatively easy to change the amount of flexibility, so it is possible to easily make a turn according to the distance between columns by adjusting the turn time. Became.

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 1, a lifting frame 2, a reaping device 3,
A reaping section consisting of a horizontal conveyance device 4, a binding device 5, etc. is provided, and at the rear of this reaping section, a mission case 8 equipped with a pair of left and right running wheels 7a, 7b, an engine 9, a control handle 10, etc. are installed. It is deployed.

In front of the pulling device 1, a stem culm abutment guide 11 is pivotally extended to prevent the planted stem culm to be reaped from escaping to the right outside. A guide 12 is fixed to the inner side of the frame 2 for slidingly supporting the base of a planted stem culm introduced between the lifting device 1 and the lifting frame 2.

Further, on the left side of the rear part of the machine body, a guide rod 13 that slides into contact with the row of planted stems and culms during backward movement is pivotally mounted so that it can swing up and down within a certain range and is biased downward.

In addition, near the rear end of this guide rod 13, when the aircraft enters into a row of planted stem culms during backward movement, the machine swings forward upon contact with the stem culms to operate an interlocking switch. Accordingly, a culm detection sensor 14 is provided which is configured to ground the ignition circuit of the engine 9 and stop the aircraft.

Further, the running wheels 7a, 7b are configured to be able to change gears into three forward speeds and one reverse speed by operating a speed change operation lever 15 provided on a control handle 10 to change a gear transmission device in a mission case 8.

The operation box 16 of the speed change operation lever 15 is equipped with an electric motor 17 capable of forward and reverse rotation for automatically switching the operation lever 23 between the forward mowing position and the reverse position, and the motor 1γ is , is configured to perform forward and reverse drive control based on changes in the contact state between the planted stem culm and a sensor 18 pivotally attached to 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 of the electric motor 17.

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 19 for the reaping section is provided, and power is transmitted to the reaping section based on the operation of the sensor 19 to detect the presence of a stem culm.
The power transmission to the reaping section is cut off based on the stem culm absence detection operation in step 9.

Further, the right side 7a of the running wheels 7a, 7b is configured to have a slightly one-dog diameter, and is given a turning ability that always moves toward the left side, and as shown in FIGS. 3 and 4, the left side running wheel 7b
The axle 20b and the axle 20b are flexible so that they can rotate freely relative to each other in an appropriate phase.

In other words, the hubs of the wheel 1b are the inner hub 21a and the outer hub 21b.
Both hubs 21a are configured to have a dual structure with both hubs 21a.

21b is relatively rotatable through the elongated hole 22 and the bolt 23
and both hubs 21a.

The axle insertion portion of 21b has an elongated hole 24a with an appropriate phase.

24b are formed respectively, and the phase of the overlapping portion of both the inner and outer elongated holes 24a, 24b can be changed by adjusting the relative phase of both the hubs 21a, 21b.

A pin 25 fixedly attached to the axle 20b is inserted through the overlapping elongated hole portion, so that the axle 20b and the wheel 7b can rotate relative to each other by the phase of the overlapping elongated hole portion.

Further, a brake drum 27 which is appropriately lightly braked by a brake band 26 is loosely fitted to the base of the axle 20b, and this drum 27 and the wheel 7b are connected to each other through a meshing connection part 28, so that the brake drum 27 is rotated from the axial direction. The wheels 7b are connected in a fixed manner so that a weak braking action is always applied to the wheels 7b.

Note that the right wheel 7a and its axle 20a are completely fixed.

Next, the automatic reaping operation will be sequentially explained.

(a) Forward travel for reaping (see Figure 5, a) When the speed change operation lever 15 is set to the reaping speed (forward 2nd speed) and the machine is directed toward the outermost planted stem culm row A, the lower surface for the reaping section is in the field. The guide 11 extending to the front of the pulling device 1 comes into contact with the outside of the stem culm row A, and due to the left-hand rotation of the machine body and the contact guidance action of the guide 11, the machine body The stem culm row A is guided by the introduction path between the lifting frame 2 and the lifting device 1 and moves forward.

Then, the reaping section is driven by the operation of the stem culm presence detection sensor 19, 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.

(D) Reverse return travel (see Figure 5) 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 when this operation is detected, the electric motor 1
7 is driven in reverse, and the gear shift operation lever 15 is driven forward 2.
It can be switched from the speed position to the reverse position.

When the vehicle is switched to the reverse state as described above, the traveling wheels 7a
, due to the leftward movement of 7b, the aircraft moves to the adjacent planted culm B.
However, the guide rod 13 provided on the left side of the rear part of the fuselage comes into contact with the stem culm row B, and the aircraft automatically moves backward and returns along this stem culm row B.

At this time, the sensor 19 detects the absence of stems, so the drive for the cutting section is cut off, and the sensor 18 detects the absence of stems in the stem culm row B.
The contact with causes the forward leaning posture f.

If the aircraft unexpectedly rushes toward the culm row B side during this backward movement, the culm comes into contact with the sensor 14, so the engine 9 is stopped and the aircraft stops.

When such a state occurs, the operator manually corrects the attitude of the aircraft and then performs an operation to restart the work.

(C) Forward switching operation (see Figure 5) When the aircraft crosses the end (starting end) of the stem culm row B by moving backward, the sensor 18 comes off the rearmost stem and takes a neutral position.
When this operation is detected, the electric morph 17 is driven in the forward direction, and the shift operation lever 15 is accordingly switched from the reverse position to the forward second speed position.

2) Forward steering operation (see Figure 5) When the switch is made from reverse to forward, the left wheel 7b is stopped for a certain period of time to accommodate the slot, and only the right wheel 7a is driven forward, causing the aircraft to turn to the left. It is rotated forward.

Then, the guide 11 catches the stem culm row B from the outside, pulls up the stem culm row B, and introduces it between the device 1 and the lifting frame 2.

The one-cycle operations (a) to (a) described above are repeated in sequence to perform unmanned reaping work.

In addition, when the spacing between the stem culm rows A and H differs depending on the field, the amount of flexibility between the wheel 7b and the axle 20b is changed by adjusting the phase of the inner and outer hubs 21a and 21b of the wheel 7b, and the rotation time, that is, the amount of rotation can be adjusted. Adjust.

Furthermore, the reason why the left wheel 7b is provided with a braking function is to reliably stop the wheel 7b and improve turning performance when switching from reverse to forward. It is desirable to provide a braking action and release the braking during normal times to reduce the running load during normal times.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the automatic reaping and harvesting machine according to the present invention, in which Fig. 1 is an overall plan view of the binder, Fig. 2 is a side view thereof, and Fig. 3 is a partially vertical side view of the left wheel. FIG. 4 is a longitudinal sectional rear view of the same, and FIG. 5 is a schematic plan view showing the sequential operation of automatic reaping work. 7a, 7b... Running wheels, 20a, 20b...
... Axle, A ... Planted stem culm row, B ...
...Adjacent planted stem culm rows.

Claims (1)

[Scope of Claims] 1. After reaping is performed by automatically following and moving the machine body running on the left and right running wheels 7a and 7b along the planted stem culm row A, it moves to the adjacent planted stem culm row B or Automatically returns backwards along the stubble row, crosses the end of the adjacent planted stem culm row B in reverse, then switches to forward movement and automatically moves the adjacent planted stem culm row B
In an automatic reaping/harvesting machine configured to temporarily rotate to the starting end side and reap by repeating this forward and backward movement, the running wheel 7b on the rotation direction side and its axle 20b
An automatic reaping and harvesting machine characterized in that the two wheels are flexibly connected to be relatively rotatable at a predetermined phase angle, the phase angle can be adjusted, and the other running wheel 7a is fixed to an axle 20a. 2. The automatic reaping and harvesting machine according to claim 1, wherein the axle 20b and the running wheels 7b are connected by an adjustable elongated hole connection mechanism.