JPS6020528Y2 - Traveling device for slope work vehicles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a traveling device for a working vehicle that works on sloped areas such as orchards and pastures.

In this type of work vehicle, the direction of action of the machine's center of gravity is biased toward the downward side of the slope, so for example, when the work vehicle is run in the direction of a contour line, the work vehicle tends to travel downward on the slope; Therefore, the running wheels must always be operated so as to point upwards.

In addition, especially when the running wheels are of a swivel type (caster), it is not possible to control them sufficiently, and there is a need for improvement.

The present invention has been developed in view of the above-mentioned circumstances, and it is possible to change the camber angle of the swivel wheel by supporting the swivel wheel support part provided at the front of the working vehicle in the direction of movement so as to be rotatable left and right. By providing an operating mechanism for changing and adjusting this camber angle in the control section, the camber angle of the running wheels can be freely adjusted according to the slope of the running surface of the orchard, etc. on which the work vehicle is traveling, and the running wheels can be constantly adjusted. By controlling the aircraft so that it is in a nearly vertical position, the movement of the center of gravity of the aircraft due to inclination is minimized, and in particular, the steering performance of the running wheels when traveling on contour lines is improved, and the operation is also extremely easy. The present invention aims to provide a traveling device for a slope work vehicle that has the following features.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Fig. 1, reference numeral 1 denotes a frame of a walking type rotary cutter for cutting undergrowth in orchards, etc. At the front of this frame 1, there are flexible running wheels (kister) on both left and right sides. 2,2 are arranged.

The support bearing 2b that pivotally supports the vertical shaft 2a of the running wheel 2 is not directly fixed to the frame 1 as in the conventional case.
A horizontal shaft 3 projecting substantially horizontally toward the rear is fixed to the lower part of the support bearing 2b, and this horizontal shaft 3 is pivotally supported by a bearing 4 fixed to the lower side of the frame 1 in the front-rear direction.

Therefore, the running wheels 2 are - similar to the conventional one, rotatable in the horizontal direction about the vertical axis 2a, and rotatable left and right about the horizontal axis 3, so that the camber angle can be changed. .

Further, the upper front sides of the support bearings 2b, 2b are connected by a link body 5, so that the camber angle of both running wheels 2, 2 can be changed at the same time, and the horizontal shaft 3 of one of the support bearings 2b is attached at the mounting position. , the base end of the actuating arm 6 is fixed, and its distal end protrudes to the side of the frame 1.

On the other hand, on the side of the frame 1, a plurality of brackets 7 are arranged at predetermined intervals in the front-rear direction, and an operating rod 8 is inserted into and supported by these brackets 7. An operating bundle 9 that can be operated at any position is fixed, and an operating arm 1 is attached to the tip of the operating rod 8.
The base end of the operating arm 10 and the operating arm 6 are connected by a link rod 11.

The camber angle of the traveling wheels 2 is adjusted by rotating the operation bundle 9 left and right.

Although not shown, the operation bundle 9 may be provided with a locking mechanism so that the camber angle of the traveling wheels 2 is locked at a position where the camber angle is adjusted.

In such a configuration, when the rotary cutter is used to cut down the orchard, when the running surface A is approximately horizontal, the running wheels 2, 2 (vertical shaft 2a) are aligned with the running surface A, as shown in FIG. The camber angle is almost 0°.
and perform normal driving and work.

If the running surface A is inclined a0 as shown in Fig. 3,
The operator manipulates the operation bundle 9 to change the camber angle a0 of the running wheels 2, 2 to maintain the running wheels 2, 2 substantially vertically.

Then, the frame 1 is supported almost parallel to the link body 5, and each device (not shown) attached to the frame 1 is supported by the running wheels 2 with the center of gravity hardly moving in the direction of action. Since the load is not biased toward the lower side of the slope as in the conventional case, stable straight-line running performance can be obtained, and steering operations can be performed easily, almost the same as on a flat running surface.

In the above embodiment, the running wheels 2 are a pair of left and right wheels, but it is also possible to use a single pair of running wheels 2.

As explained above, according to the traveling device for a slope work vehicle of the present invention, the camber angle of the flexible traveling wheel provided at the front of the work vehicle can be changed, and the operating mechanism for changing and adjusting the camber angle of the wheel is made possible. is installed in the control section at the rear of the vehicle body, so when the vehicle is traveling along the contour line of a slope, the traveling wheels can be controlled in the vertical direction with a simple operation, and the center of gravity of the vehicle can be moved in the direction of action. In addition, the simple structure reduces production costs and provides good operability.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of a walking type rotary cutter to which the present invention is applied, and FIGS. 2 and 3 are front views showing how the same is used. 1... Frame, 2... Running wheels, 3
...Horizontal shaft, 4...Bearing, 5...
... Link body, 9... Operation bundle.

Claims (1)

[Scope of utility model registration request] In a work vehicle that is provided with a swivel wheel at the front in the direction of travel, the swivel wheel has its vertical axis supported by a support bearing so as to be rotatable in the horizontal direction, and the horizontal axis extends rearward from the support bearing. The horizontal axis is supported on a bearing provided on the work vehicle so as to be able to rotate from side to side to change the camber angle, and an operating mechanism for changing and adjusting the camber angle is installed in the control section at the rear of the work vehicle. A traveling device for a slope work vehicle characterized by an extended installation.