JPS5936544Y2 - Power work vehicle with simple riding device - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a riding device that is equipped with a drive wheel and a seat, and supports the drive wheel so as to be able to rotate around a vertical axis passing through its ground contact portion and a rotation axis. This invention relates to a power working vehicle with a simple riding device, such as a reaper, which is connected to the rear of the main body of the model working vehicle.

Such a power working vehicle with a simple riding device is of course easier to construct economically than a tractor-type riding working vehicle, and since the riding device is self-propelled, it can be used even in fields with high running resistance such as wet fields and semi-wet fields. Even in a riding device, smooth and reliable running operation can be carried out, and the turning radius of the driving wheel in the riding device is small, and the driving wheel passes through the ground contact point and rotation axis of the riding device. By turning around the vertical axis, the positional fluctuation of the drive wheel ground contact part with respect to the main body due to turning can be eliminated or minimized, so even if turning with a small radius, the stability of the entire machine can be maintained. Although it is not a simple riding type, it has the advantage of being able to maintain its stability and make safe turns, and has excellent running and turning performance.

An object of the present invention is to make turning maneuverability of a power working vehicle with a simple riding device easy and good, which has the above-mentioned advantages.

Hereinafter, an embodiment of the present invention will be described based on the drawings. A power reaper with a simple riding device (an example of a power working vehicle) has a pair of left and right drive running wheels 11 and 11 using low-pressure tires at the front. A processing section 12 is provided which can discharge the planted stem culms to the side after cutting and tying them, and the running wheels 11.
A driving unit 13 for the pair of running wheels 11.11 and the processing unit 12 is arranged at the rear of the 11 pairs, and a steering clutch operating lever 15° 15 is provided near the left and right pair of grips 14a, 14a, respectively. This reaper consists of a walking type reaper main body 1 with an equipped operating handle 14 extending rearward and upward, and a riding device 3 which is detachable from the rear of the main body 1 and has a drive wheel 2.

The riding device 3 is detachable from the main body 1, and
A support frame 2A for the drive wheel 2 is attached to the rear end of the cylindrical frame 6 having the riding step 7, and a seat 4 is attached to the upper part of the support frame 2A. The frame 6 is attached to the main body 1 so that it can freely swing up and down relative to the main body 1 with the frame R as a fulcrum.

The driving wheel 2 uses the driving portion 13 of the main body 1 as a driving source, and a transmission mechanism 16 from the driving portion 13 to the driving wheel 2 is installed inside the cylindrical frame 6 and the support frame 2A. The human power section of the transmission mechanism 16 is configured to be able to be interlocked with and released from the output section on the main body 1 side as the cylindrical frame 6 is attached to and removed from the main body 1.

By attaching the support frame 2A to the cylindrical frame 6 in a state where it can freely rotate around the vertical axis Y passing through the ground contact part a of the drive wheel 2 and the rotating wheel center X, the drive wheel 2 can be moved as described above. The seat 4 is configured to be rotatable around a vertical axis Y, and the seat 4 is rotatable around a vertical axis Y that is coaxial with the -L lower axis Y for turning the driving wheels. attached to the support frame 2A, and between the seat 4 and the support frame 2A,
An interlocking mechanism 5 is provided which enlarges the amount of rotation of the seat 4 and rotates the drive wheels 2.

This interlocking mechanism 5 has a partially internal gear 8 positioned around the vertical axis Y fixedly mounted on the lower surface of the seat 4, and
An external gear 9 located around the vertical axis Y is fixedly attached to the support frame 2A, and an idle gear 10 that meshes with both gears 8 and 9 at the same time is attached to the cylindrical frame 6 in a fixed position. Thus, as the seat 4 rotates, the drive wheels 2 are configured to rotate in the opposite direction to the seat 4 at a speed greater than the rotation speed of the seat 4.

The transmission mechanism 16 interlocks the lower end of a vertical shaft 17, which is positioned concentrically with the vertical axis Y, with a transmission shaft 18 inside the cylindrical frame 6 via 19.19 pairs of bevel gears. At the same time, the upper end of the vertical shaft 17 is connected to the horizontal shaft 2 which is interlocked with the axle 20 of the drive wheel 2 via a chain transmission 21.
2 through a pair of bevel gears 23, 23, so that power is transmitted to the drive wheels 2 in a state that allows the drive wheels 2 to turn as described above.

To turn the machine body of the power reaper with the simple riding device configured as described above, the steering clutch levers 15, 15 are operated, and the seat 4 is turned to face the turning direction using the steering handle 14 and the step 7 as reaction force bases. This is done by turning the driving wheels 2.

The above are examples of the present invention.

As explained in this embodiment, the present invention provides the power working vehicle described at the beginning of the detailed description, in which the seat is rotatable around the vertical axis and the seat is rotated around the vertical axis with respect to the drive wheel. This seat 4 is configured to be relatively rotatable around the seat 4.
The present invention is characterized in that an interlocking mechanism 5 is provided between the seat 4 and the drive wheel 2 to rotate the drive wheel 2 by increasing the amount of rotation of the seat 4.

That is, according to the present invention, by rotating the seat 4 using, for example, a steering handle or a step as a reaction force platform, the drive wheels 2 can be turned using the seat 4 as an operating tool. The rotation operation 4 can be performed while performing other manual or foot operations such as rotation operation on the main body 1, so the rotation operation on the main body 1 and the rotation operation on the drive wheels 2, which are necessary when turning the aircraft, can be performed at the same time. can be done without any confusion.

Furthermore, since the amount of rotation of the seat 4 is small compared to the amount of rotation of the drive wheels 2, the driver can maintain a safe posture when turning while using the seat 4 as a rotation control device for the drive wheels. Overall, the maneuverability for turning the aircraft has been made easier and better.

[Brief explanation of drawings]

The drawings show an embodiment of the power working vehicle with a simple riding device according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is an overall plan view, Fig. 3 is an enlarged longitudinal cross-sectional view of main parts, and Fig. FIG. 4 is an enlarged plan view of the main mechanism. 1... Work vehicle body, 2... Drive wheel, 3
...... Passenger equipment, Y... Vertical axis, 4.
...Seat, 5...Interlocking mechanism, 6...
...Frame, 7...Foot rest step, 8...
...Internal gear, 9...External gear, 10...
...Idle gear.

Claims (1)

[Claims for Utility Model Registration] ■ A passenger device 3 that is equipped with a drive wheel 2 and a seat 4, and supports the drive wheel 2 so as to be able to rotate around a vertical axis Y passing through its ground contact portion and a rotation axis. is connected to the rear part of the main body 1 of the walk-behind working vehicle, in which the seat 4 is rotatable around the vertical axis and is rotatable relative to the drive wheel 2 around the vertical axis. A power unit with a simple riding device characterized in that an interlocking mechanism 5 is provided between the seat 4 and the drive wheel 2 to enlarge the amount of rotation of the seat 4 and rotate the drive wheel 2. work vehicle. (2) The power working vehicle with a simple riding device according to claim (2), wherein the vertical axis of rotation of the seat 4 and the vertical axis of rotation Y of the drive wheel 2 are coaxial. ■ The interlocking mechanism 5 includes an internal gear 8 fixed on the seat 4 side, an external gear 9 fixed on the drive wheel 2 side, and both 8.
, 9 and an idle gear 10 interposed between them.