JP2002316673A - Handle device for farm machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle device used in a single-axis walking-type farm machine, which is capable of almost steplessly adjusting a handle mounting angle to a body roughly, which has a simple structure and the minimum number of parts to be changed and which is capable of being easily attached to the machine in which the handle device has not been attached, while accommodating the need for changing the mounting angle significantly temporarily even during farming, if any. SOLUTION: An engagement pin 5 supported against a supporting cylinder 4a rotating together with a pivoting shaft 3 is inserted and removed into/from a turning angle regulating part 2c provided at the prescribed distance from a pivoting part 3 of the handle 1 to permit the angle to the body of the handle 1 to be changed significantly. Inner clip washers 1a, 3a are provided between a mounting base of the handle 1 and the pivoting shaft 3 to permit both of them to be relatively turned, thereby almost steplessly adjusting the handle 1 vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking-type agricultural working machine having a single-axis traveling wheel driven by an engine and a steering handle extended from the body, and more particularly to an up-and-down moving of the handle with respect to the body. The present invention relates to a direction rotation angle adjusting device.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Laid-Open Publication No. 59-49584 and Japanese Utility Model Laid-Open Publication No.
The walking angle agricultural work machine having two wheels and having two steering handles facing rearward in a vertical turning angle adjusting portion with respect to the body of the handle, the turning angle adjusting portion is provided with a handle cradle or It is already known that a holding tool or a locking tool having several holes is provided separately from the mounting mechanism, and a locking pin is inserted into and removed from the holes in the longitudinal direction of the body to obtain a required handle angle. .

[0003]

The already-known rotation angle adjusting portion is provided separately from the handle cradle or the mounting mechanism.
A holding tool or a locking tool having several holes, and a locking pin is inserted into and removed from the holes in the longitudinal direction of the body to obtain a required steering wheel angle is not only large and complicated in structure, but also The number of replacement additional parts at the time of additional mounting to an unmounted machine may increase.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and comprises a single-axis traveling wheel driven by an engine and a handle (1) extended from the body. In the walking type agricultural work machine having the above, the mounting base of the handle (1) is pivotally supported in a vertically rotatable manner with respect to the body via a pivot shaft (3), and the pivot shaft (3).
A rotation angle restricting portion (2c) is arranged at a predetermined distance along the longitudinal direction of the handle from the, and a locking pin (5) arranged to be disengageable from the rotation angle restricting portion (2c). By operation, the handle (1) can be set at a required angle, an arm member (4) is extended integrally with the pivot shaft (3), and the arm member (4) is provided at an axial end thereof with the arm member (4). Locking pin (5)
A supporting cylinder (4a) for supporting the handle (1);
Kikuza (1a, 3) between the mounting base of the shaft and the pivot shaft (3).
The above-mentioned problem has been solved by interposing a) and enabling the handle (1) and the pivot shaft (3) to be relatively rotatable by the chrysanthemum seat (1a, 3a).

(Operation) When the farm work machine of the present invention performs normal work, the middle of the plurality of holes (2b) of the rotation angle regulating portion (2c) provided on the side of the body of the handle frame (2). The locking pin (5) is inserted into the position hole (2b), the through bolt (10) at the tip of the handle is removed, and the chrysanthemum seat (1a) at the mounting base of the handle (1) and the pivot support are removed. Adjust the chrysanthemum seat (3a) of the shaft (3) and tighten the through bolt (10) at an appropriate position according to the height to fix the tip of the handle (1) and the pivot shaft (3).

[0006] When turning at the edge of the field, or when it is necessary to temporarily change the height of the handlebar temporarily, such as when going up or down a steep hill, the operating lever (6) at hand is operated to operate the locking pin ( 5) with the middle hole (2) of the rotation angle regulating portion (2c).
b), the upper and lower holes (2b) are moved and inserted, and the handle angle with respect to the body is rotated downward or upward, and further, the body is rotated about the axle, so that the attitude of the body is adjusted. , The position of the handle with respect to the worker can be made substantially constant.

The reference numbers in parentheses are for comparison with the drawings, but do not limit the configuration of the present invention.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall side view of an agricultural working machine according to the present invention.
FIG. 2 shows an overall plan view.

In FIGS. 1 and 2, the mounting bases of the two handles 1 extending rearward are pivotally supported by a handle frame 2 fixed to the body of the machine body together with a pivot shaft barrel 3 so as to be rotatable. From the end, attach the handle mounting bolt 10 to the pivot shaft cylinder 3
And is tightened and fixed at the other end.

An arm 4 is attached to the lower surface of the pivot shaft barrel 3, extends rearward through the rear surface of the handle frame 2, and is locked at the tip of the arm 4 in parallel with the pivot shaft barrel 3. The support cylinder 4a of the pin 5 is welded.

As shown in FIG. 2, a chrysanthemum seat 1a is welded to the inner surface of the mounting base of the handle 1. On the other hand, the left and right end faces of the pivot shaft barrel 3 correspond to the chrysanthemum seat 1a. 3a is engraved, and the proper engagement of the handle 1 with respect to the pivot shaft barrel 3 is maintained by the combined engagement of the two chrysanthemum seats.

FIGS. 3 and 4 are a side view and a rear view, respectively, of a main part of the present invention.

As shown in FIG. 3, the lower surface of the pivot
The arm 4 is mounted rearward by the arm mounting bolt 9, and a support cylinder 4 a for guiding the locking pin 5 in the left-right direction is welded to the tip of the arm 4. At this time, as shown in FIG.
The notch extends rearward.

As shown in FIGS. 3 and 4, the handle frame 2 has the left and right wall surfaces to loosely fit the pivot shaft barrel 3, and the outer surfaces thereof are stopped by retaining rings 8 to position the handle frame 2 in the left and right directions. . As shown in FIG. 3, the left wall surface of the wall surface is particularly greatly extended rearward to
c is formed, and three or more holes 2b are provided at the tip end thereof on a concentric arc centered on the pivot shaft barrel 3.

The angle of the pivot shaft barrel 3, that is, the handle 1, with respect to the main body is defined by selecting one of the holes 2b and disengaging and engaging the locking pin 5.

FIG. 5 is a cross-sectional view of a main part of the rotation angle restricting portion.

Inside the support cylinder 4a, a locking pin 5 directly connected to an inner wire of a connecting wire 7 connected to an operating lever 6 of a handle portion at hand is built in, and a return spring 1 is provided.
1 and moves left and right, and the tip thereof is a rotation angle regulating plate 2.
It is disengaged from the c-defined hole 2b. That is, when the operating lever 6 at hand is gripped, the locking pin 5 is returned to the return spring 11.
And moves to the right, and its tip is the rotation angle regulating plate 2c.
When the operation lever 6 is released by moving the handle 1 to the upper or lower hole 2b and releasing the operation lever 6, the return pin 11 resiliently releases the locking pin 5
Moves to the left, and its tip engages the new hole 2b to change the handle angle with respect to the aircraft.

[0019]

According to the first aspect of the present invention, the rotation angle restricting portion is disposed at a predetermined distance from the pivot shaft of the handle along the longitudinal direction of the handle, and the rotation angle restricting portion is engaged with the rotation angle restricting portion. The handle can be set at a predetermined angle by operating the locking pin that is detachably arranged, so that the handle height can be easily changed to a height that matches the height of the worker, and a simple Because of the structure and the small number of changed parts, it can be easily added even to a non-arriving machine of the present adjusting device.

In addition, for example, when turning at the edge of a field, it is possible to easily cope with a case where it is necessary to temporarily change the handle height to a large degree such as going up and down a steep slope, by hand operation.

According to the second aspect of the present invention, the arm member is extended integrally with the pivot shaft of the handle, and the support cylinder for supporting the locking pin is provided at the axial end of the arm member. ,
A required handle angle can be easily obtained by inserting and removing the locking pin.

According to the third aspect of the present invention, a chrysanthemum seat is interposed between the mounting base of the handle and the pivot shaft, and the handle and the pivot shaft are relatively rotated by the chrysanthemum seat. Because it is possible, the handle can be adjusted up and down almost steplessly.

[Brief description of the drawings]

FIG. 1 is an overall side view of an embodiment of the present invention.

FIG. 2 is an overall plan view of an embodiment of the present invention.

FIG. 3 is a side view of a main part of the present invention.

FIG. 4 is a rear view of a main part of the present invention.

FIG. 5 is a cross-sectional view of the rotation angle restricting portion of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle 2 Handle frame 3 Pivot shaft 4 Arm 5 Locking pin 6 Operation lever 7 Connecting wire 11 Return spring

Claims (3)

[Claims] 1. A walking-type agricultural work machine having a single-axis traveling wheel driven by an engine and a control handle extended from the body, wherein a mounting base of the handle is connected via a pivot shaft. A pivot angle is pivotably supported in the vertical direction with respect to the body, and a rotation angle regulating portion is disposed at a predetermined distance from the pivot shaft along the longitudinal direction of the handle, and is engaged with the rotation angle regulating portion. A handle device for an agricultural work machine, wherein the handle can be set to a required angle by operating a locking pin that is detachably disposed. 2. An arm member extending integrally with the pivot shaft, and a support cylinder for supporting the locking pin is provided at an axial end of the arm member. The handle device of the agricultural working machine described in the above. 3. A chrysanthemum seat is interposed between the mounting base of the handle and the pivot shaft, and the handle and the pivot shaft can be relatively rotated by the chrysanthemum seat. The handle device for an agricultural work machine according to claim 1, wherein