JPS595471B2 - Control handle mounting structure for walking-type mobile agricultural machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention makes it possible to change the direction in which the handle extends from the vehicle body, for example, in response to changes in the work style, etc. In order to be able to adjust the height of the handle to a level that is easy to maneuver, etc., the handle was added to the vehicle body so that it could freely rotate around the vertical axis and swing up and down. Regarding the improvement of the control handle addition structure for type mobile agricultural machinery, the purpose is to obtain a structure that allows the control handle to be firmly supported and fixed and to change the control handle height position and forward/backward direction. It is in.

The characteristic configuration of the steering/handle mounting structure for a walking-type mobile agricultural machine of the present invention is that a vertical shaft is erected in the upper part of the mission case, a cylinder is rotatably fitted on the vertical shaft, and the cylinder is The steering wheel is pivotally supported via a horizontal axis, and the steering wheel is configured to be able to swing up and down around the horizontal axis and change forward and backward around the vertical axis. An engaging member is pivotally attached to a position closer to the grip portion than the horizontal shaft via a pivot shaft separate from the horizontal shaft, and the steering handle is attached to the engaging member so as to be swingable back and forth. A plurality of recesses are formed at a plurality of locations around the horizontal axis of the cylinder body and open to the cylinder side, and the plate surface is intersected with the engagement member attached to the steering handle side on the circumference of the cylinder body. A flange-shaped engagement member is provided, and the engagement member attached to the steering handle is positioned at a plurality of locations around the vertical axis on each of the outer peripheral edges of the engagement member corresponding to the front and rear sides of the vehicle body. A concave portion that engages with the concave portion is provided, so that the height position and the forward and backward direction of the handle can be changed by engaging and disengaging the two engaging members,
This configuration provides the following effects.

In other words, the vertical movement of the operating handle is caused by the engagement of the recesses formed in both engaging members that intersect with each other on the plate surfaces, and the vertical movement of the operating handle is controlled by the recesses of the engaging members attached to the operating handle. Movement in the vertical and lateral directions of the operating handle can be prevented because movement in the vertical and horizontal directions is blocked by the upper and lower surfaces, and by both sides of the four parts of the brim-like engagement member attached to the handle attachment member. .

In addition, the base end of the control handle is configured in a rectangular frame shape by the handle attachment member, the engagement member attached to the control handle, the base of the control handle itself, and the brim-shaped engagement member, so that the control handle can be easily operated. The support strength of the handle is large.

In this way, the handle fixing mechanism can be configured simply by arranging the pair of engagement members on the vehicle body side and the handlebar side in such a manner that their engagement positions can be changed.
The height position of the handle and the structure for changing the front and rear directions have been simplified.

Next, embodiments of the present invention will be described based on illustrative drawings.

When adding a mission case M, which is equipped with a pair of left and right drive rotation shafts 2, 2 that protrude in the lateral direction of the aircraft body, at the rear of the machine frame 1 with the engine E installed in the front, the rotation shafts 2, 2
A pair of left and right running wheels 3, 3 that are detachably attached to each
In addition to providing a self-propelled vehicle body with It consists of a walking-type mobile agricultural machine.

The self-propelled vehicle is placed on its engine E side and transmission case M.
The direction in which the handlebar 4 extends from the vehicle body can be changed between the forward direction and the rearward direction of the vehicle body so that the steering wheel 4 can be operated with either side facing forward. In this case, the above-mentioned... It is possible to change the mounting state of the handle 40 on the vehicle body, and the handle mounting structure is the second one.
Figure 1 (configured as shown).

That is, a vertical shaft 6 is fixed via the upper bracket 5 of the mission case M, and a cylindrical body 7 is rotatably fitted onto the vertical shaft 6. It is pivotally connected to the cylinder body 7 via a horizontal shaft 8.

That is, by manually rotating the handle 4 around the axis X of the vertical shaft 6, the direction in which it extends from the vehicle body can be changed to the rearward direction of the vehicle body or the forward direction of the vehicle body. By artificially swinging up and down the steering wheel 4 around the axis Y of the horizontal shaft 8, the vertical mounting angle of the vehicle body relative to the vehicle body can be changed.

A disc-shaped engagement member 9 fixed coaxially with the vertical axis X is provided on the bracket 5, and outer peripheral edge portions of the engagement member 9 corresponding to the front and rear sides of the vehicle body with respect to the vertical axis 6 are provided. In addition, recesses 10 having openings facing the front of the vehicle body or recesses 11 having openings facing the rear of the vehicle body are respectively disposed at a plurality of locations around the vertical axis X, while at the base end portion of the handle 4. An engaging member 12 is provided which is swingably suspended around a pivot shaft 16 in the direction of approaching and separating from the vehicle body side engaging member 9, and the engaging member 12 is provided on the free end side of the engaging member 12 and Recesses 13 that open toward the engaging member 9 on the vehicle body side are provided at a plurality of locations around the horizontal axis Y.

A tension spring 14 that swings and biases the handle-side engaging member 12 toward the vehicle body-side engaging member 9 is provided in a tensioned state between the handle-side engaging member 12 and the cylindrical body 7. As shown in FIG. 3, when each of the engaging members 9 and 12 is engaged with the other recess, the engaging member 9
When the two are engaged with each other, the vertical swing and rotation of the handle 4 is fixed, and the fixed state is maintained by the spring 14.

Then, the handle-side engaging member 12 is moved away from the vehicle body-side engaging member 9 by an artificial rocking operation using the operating section 15 extending therefrom, and both engaging members 9,
When each of the handles 12 and 12 is removed from the other recess, the handle 4 is switched to a state in which the vertical swing fixation and the rotation fixation are released.

Select the recess 10 or 11 of the vehicle body side engaging member 9,
The fixed rotation angle of the handle 4 is changed, and the recess 13 of the handle-side engaging member 12 is selected to change the fixed swing angle of the handle 4.

[Brief explanation of the drawing]

The drawings show an embodiment of the handle mounting structure for a walking type mobile agricultural machine according to the present invention, the first drawing is an overall side view of the walking type mobile agricultural machine, the second is a perspective view of the handle mounting structure, and the third drawing is a sectional view of the handle fixing structure. 4... Handle, 6... Vertical shaft, 7... Cylindrical body, 8,
16... Horizontal shaft, 9... Fixed engagement member, 10, 11,
13... Recessed portion, 12... Movable engagement member, M... Mission case, vertical axis center, Y... Horizontal axis center.

Claims (1)

[Claims] 1. A vertical shaft 6 is erected on the upper part of the mission case M, a cylinder 7 is rotatably fitted onto the vertical shaft 6, and a steering wheel 4 is pivotally supported on the cylinder 7 via a horizontal shaft 8. The steering handle 4 is configured to be able to freely swing up and down around the horizontal axis 8 and to change forward and backward directions around the vertical axis 6. At the offset position, an engaging member 12 is pivotally attached to the engaging member 12 via a pivot shaft 16 different from the horizontal shaft 8 so as to be swingable back and forth, and the engaging member 12 is attached to the engaging member 12 around the horizontal shaft 8 of the operating handle 4. A plurality of recesses 13 are formed at a plurality of locations and open toward the cylindrical body 7 side, and an engaging member 12 attached to the steering handle 4 side is formed around the periphery of the cylindrical body 7. A collar-shaped retaining member 9 is provided with the plate surfaces intersecting, and the retaining member 90 is positioned at a plurality of locations around the vertical axis 6 on the outer peripheral edge portion corresponding to the front and rear sides of the vehicle body. 4
A recess 10 that engages with a recess 13 of an engaging member 12 attached to the
. . . are provided, thereby causing the engagement of both the engagement members 9 and 12.
A control handle mounting structure for a walking type mobile agricultural machine, characterized in that the height position and front/back direction of the handle can be changed by detaching the control handle.