JPS606382Y2 - Power work vehicle with simple riding device - Google Patents

Description

[Detailed description of the invention] This invention is a walk-behind work vehicle equipped with a simple riding device such as a reaping and binding machine that connects a riding device equipped with a drive wheel that can rotate around the vertical axis to the rear of the main body of the work vehicle. Regarding power working vehicles.

Such a power working vehicle with a simple riding device is not only economically easier to construct compared to one that uses a tractor as the main body of the working vehicle, but also because the riding device is self-propelled, it has high running resistance in wet fields, semi-wet fields, etc. Although it has the advantage of being able to operate smoothly and reliably while riding in the field, and because of the turning action of the drive wheels on the riding equipment side, the turning radius can be made small for the pilot in command, the drive wheels may run up on convexities on the ground. When the aircraft falls into a depression in the ground and a ground reaction force acts on the drive wheels from the lateral direction, the drive wheels tend to turn unnecessarily, causing the aircraft to meander.

In particular, in the case where the entire passenger vehicle is constructed low relative to the ground and the drive wheel rotation axis is provided on the side of the drive wheel in order to improve safety, the propulsive force of the drive wheel is also lower than that of the drive wheel. Since this acts as an unexpected turning force on the vehicle, there is a problem in that the meandering is noticeable and the straightness is lacking.

In view of these points, the present invention has been designed to allow the aircraft to turn advantageously on headlands etc. with a small radius, while normally allowing for less meandering and good straight-line work travel. The purpose is to

The power working vehicle with a simple riding device according to the present invention is provided with a mechanism for fixing the turning of the driving wheels in the above-described one, and the mechanism connects this mechanism and the steering clutch lever to the working vehicle body. The working vehicle body is also characterized in that it is interlocked and connected so that it is fixed when the clutch lever is engaged and released when the clutch is disengaged, and the work vehicle main body is provided with drive running wheels.

That is, according to the present invention, the drive wheels can be fixed in a straight-ahead running position at will, so that during straight-ahead work, by fixing the drive wheels, unforeseen meandering of the aircraft is suppressed regardless of the ground reaction force. It is possible to perform work traveling with good straightness, and when the aircraft is turning, the steering clutch lever is operated to cut off the power to the drive wheel on the 6 side during the turn, and this lever operation also controls the drive wheel. Since the fixation is automatically released and the drive wheels can be turned actively, the work vehicle body can be turned with a small radius that is almost equivalent to the interlining rotation, improving work efficiency, and The structure is simpler than a system in which the fixing and unfixing devices are installed separately, and the clutch operation and the fixing and unfixing of the mechanism are linked smoothly and in a timely manner, further improving steering performance. There are advantages that can be achieved.

Hereinafter, embodiments of the present invention will be explained based on the drawings. Figs. 1 and 2 show the overall structure of a power reaping and binding machine with a simple riding device (an example of a power working vehicle), and Figs. Figure 4 shows its main structure.

The power reaping and tying machine is equipped with a processing section 7 in front of a pair of left and right driving wheels 6, 6 using low-pressure tires, which can reap and bind planted stem culms and then release them laterally outward. with 1
, a driving unit 8 for the running wheels 6, 6 pair and the processing unit 7 is disposed at the rear of the running wheels 6, 6 pair, and a turning steering wheel is provided near the left and right pair of grips 9a, 9a. A riding type reaping machine equipped with a walking type reaper main body 1 having a control handle 9 equipped with clutch levers 5, 5 extending rearward and upward, and a drive wheel 2 using low-pressure tires that can be attached and detached at the rear of the main body 1. From device 3.

The riding device 3 includes a support frame 1 that supports the drive wheels 3 in a cantilever manner.
0 on a footrest step lla that can be attached to and detached from the main body 1.
The device is attached to a cylindrical connection frame 11, and a seat 12 is attached to this frame 11 in a state located directly above the drive wheel 2. Attaching the frame 11 to the main body 1 is The driving wheel 2
By attaching the support frame 10 to the frame 11 on the lateral side of the drive wheel 2 and in a state where it can freely rotate around the vertical axis Y that intersects orthogonally to the extension line of the rotation axis X of the drive wheel 2. , is configured to be able to rotate around the above-mentioned vertical axis Y.

By inserting the pin 4a held on the frame 11 side between the frame 11 and the support frame 10 into the engagement hole 4b formed on the support frame 10 side, the driving wheel 2 can be moved straight. A mechanism 4 is provided which allows the drive wheel 2 to turn by fixing the drive wheel 2 and pulling out the pin 4a from the engagement hole 4b, and an operating device for fixing and unfixing the mechanism 4 is provided.

This operating device links the steering clutch levers 5, 5 to the pin 4a via wires 5a, 5a, and is linked to a clutch engagement operation of the clutch levers 5, 5, which is a turning steering operation. The mechanism 4 is fixed and released in conjunction with the clutch release operation of the clutch lever 5.5.

The pin 4a is biased to move by a spring 13 so that it is automatically inserted into the engagement hole 4b when the drive wheel 2 returns to the straight-ahead position after the steering operation is released.

The drive source for the drive wheels 2 is the drive unit 8 of the main body 1, and the transmission mechanism from the drive unit 8 to the drive wheels 2 is internally installed in the frame 11 and the support frame 10.
The internal transmission device automatically interlocks with the output shaft on the main body 1 side via bevel gears 14 and 14 pairs as the riding device 3 is attached to the main body 1, and The transmission shaft 15 is automatically decoupled when removed from the drive wheel 2, and the transmission device from this transmission shaft 15 to the axle 16 of the drive wheel 2 is located concentrically with the above-mentioned vertical axis Y, At its upper end, it is connected to a transmission shaft 15 via a pair of bevel gears 17.17, and at its lower end, it is connected to an axle 16 through a bevel gear 1.
The vertical axis 19 is linked via 8.18 pairs.

[Brief explanation of drawings]

The drawings show an embodiment of the power working vehicle with a simple riding device according to the present invention, and FIGS. 1 and 2 are an overall side view and a plan view, and FIG.
The figure is a partially cutaway enlarged rear view of the main part, and FIG. 4 is a sectional view taken along the line IV--IV in FIG. 3. 1... Work vehicle body, Y... Vertical shaft center,
2... Drive wheel, 3... Riding device, 4.
...Turning fixing mechanism, 5...Steering clutch lever 16...Drive running wheel.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A power working vehicle comprising a riding device 3 equipped with a driving wheel 2 that is rotatable around a vertical axis Y, connected to the rear of a walking-type working vehicle main body 1, wherein said driving wheel A mechanism 4 is provided for fixing the turning of the vehicle 2, and the mechanism 4 and the steering clutch lever 5 relative to the work vehicle body 1 are fixed by the clutch engagement operation of the clutch lever 5 and by the clutch disengagement operation. The work vehicle body 1 is interlocked and connected so as to be released from the fixation.
is a power working vehicle with a simple riding device, characterized in that it is equipped with driving running wheels 6, 6. (2) A power working vehicle with a simple riding device according to claim 1, wherein the pivot axis Y of the driving wheel 2 is provided on a lateral side of the driving wheel 2.