JPH0319468Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention widens the distance between the wheels, places the bonnet and drive device eccentrically from the center between the left and right wheels, and places the steering wheel and seat at approximately the center. The present invention relates to the arrangement structure of the accelerator lever of an offset type agricultural tractor.

(b) Prior art Regarding the arrangement of the accelerator lever in offset type agricultural tractors,
64832 is considered to be publicly known.

However, in this conventional technology, the accelerator lever is placed below the dash board on the bonnet so that it can move up and down, and it protrudes toward the seat side, which obstructs the operator's getting on and off, and also prevents the operator's body or work clothes from touching it. This was also the cause of malfunctions.

There is also a known technique in which an accelerator lever is provided near the handle and the grip portion protrudes above the dart board.

For example, there is a technique described in Japanese Utility Model Publication No. 49-30163.

(c) Problems to be solved by the invention This invention has the following problems in offset type tractors:
Since the bonnet, seat, and steering wheel are eccentric, the location of the accelerator lever is a problem, but we tried to make it as unobtrusive as possible for the operator to get on and off the vehicle, improve operability, and provide strong support. It is arranged as follows.

(d) Means for solving the problem The purpose of the present invention is as described above, and the configuration for achieving the purpose will be explained below.

In an agricultural tractor in which the centers of the bonnet 9 and the dash board 6 are offset from the center of the body, the steering support pipe 4 is bent and provided from the center side of the dash board 6 toward the center side of the body, and the steering support pipe 4 and other parts are bent. The steering handle 2 is pivotally supported at the end of the steering support pipe 4, and an accelerator lever 1 is provided near the part of the steering support pipe 4 that supports the steering handle 2.
is rotatably supported, and the grip portion of the accelerator lever 1 is projected above the dash board 6.

(E) Embodiments and operations The purpose and structure of the present invention are as described above, and the structure and operations of the embodiments shown in the attached drawings will be explained below.

Fig. 1 is an overall plan view of the offset type tractor of the present invention, Fig. 2 is an enlarged plan view of the steering handle and accelerator lever, Fig. 3 is a side view, and Fig. 4 is a front view of the steering support pipe section. 5 and 6 are a side view and a front view of the accelerator lever 1.

Referring to FIG. 1, the overall structure of an offset type tractor will be explained.

The distance between the ruts of the front wheels 24, 24 and the rear wheels 25, 25 is made large so that the ruts straddle the tobacco and vegetables that are being planted.

Further, the steering handle 2 and seat 16 are placed in the center of the left and right wheels so that the operator can clearly see the crops and working equipment below. On the other hand, the drive system for the bonnet 9, the transmission case 17, etc. is spaced apart from the center of the left and right wheels so as not to pass over the crop ridges.

Left and right brake pedals 21, 21 and a clutch pedal 22 are provided in front of the seat 16 and the step.

A steering handle shaft 2a of the steering handle 2 extends forward and transmits rotation into the steering gear box 7. A steering arm 8 protrudes from the steering gear box 7 and pushes and pulls left and right tie rods 15L and 15R.

18 is a cultivating claw device installed as a mid-work machine. Reference numeral 19 denotes a rear culti claw device attached to the tool bar 20.

In the present invention, the accelerator lever 1 is arranged to protrude upward from the dash board 6 side of the bonnet 9 in such a structure.

The support structure of the steering handle 2 will be explained with reference to FIGS. 2, 3, and 4.

In offset type tractors, it is impossible for the steering handle to protrude immediately beyond the dart board 6 at the rear of the bonnet 9, so first, the insertion tube 5 is fixed inside the dart board 6, and the insertion tube 5 is fitted with an L-shape. A steering support pipe 4 is fitted and fixed with bolts.
This L-shaped steering support pipe 4 is protruded to the right side, a pipe 3 is provided at the tip, and the pipe 3
The shaft 2a of the steering handle 2 is fitted inside.

The tip of the steering handle shaft 2a is inserted into the steering gear box 7 to transmit the rotation, and the steering arm 8 is connected to the tie rod 15.
It is configured to push and pull L and 15R.

Then, as shown in FIGS. 3 and 4, the insertion tube 5
A bracket 11a protrudes further to the side, and an accelerator plate 11, which pivotally supports an accelerator arm 14, etc., is fixed to this bracket 11a. The tip of the accelerator lever shaft 1a is fitted into the accelerator plate 11.

An accelerator arm 14 is attached to the accelerator lever shaft 1a.
is fixedly installed and rotates in a substantially horizontal plane. A detent ball device 12 is integrated with this accelerator arm 14 and rotates, and the accelerator lever 1 is configured to receive a locking biasing force at the idling rotational position of the engine. Further, an accelerator link 13 connected to an accelerator device of the engine is pivotally connected to the tip of the accelerator arm 14.

In the present invention, a bracket 30 is protruded from the horizontal portion of the steering support pipe 4, an accelerator lever shaft 1a fitted with an elastic body 31 is fitted into the bracket 30, and the bracket 30 is fixed by being tightened from above and below with tightening plates 32, 32. There is.

The accelerator lever 1 is provided above the dash board 6 along the horizontal portion of the L-shaped steering support pipe 4 so as to protrude toward the hood. The direction in which the accelerator lever 1 is operated is rotated back and forth in a plane substantially parallel to the upper surface of the dash board 6.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, the steering handle 2 can be firmly supported near the center of the vehicle body, and the accelerator lever 1 can also be firmly supported at this position. Therefore, the accelerator can be adjusted accurately using the accelerator lever 1.

Second, the accelerator link 13 that connects the accelerator lever 1 and the engine can now be placed and extended on the side of the bonnet 9.

Third, in the offset type tractor, the accelerator lever is placed together with the steering handle, so the accelerator lever can be placed close to the operator's hand, improving operability.

Fourth, since the steering support pipe 4 is also used as a support for the accelerator lever, the structure is simple and the cost can be reduced.

Fifth, because the accelerator lever does not protrude from below the dart board toward the seat as in the past, there is no longer any possibility of malfunction due to contact with the operator's body or work clothes when getting on and off the vehicle.

[Brief explanation of the drawing]

Fig. 1 is an overall plan view of the offset type tractor of the present invention, Fig. 2 is an enlarged plan view of the steering handle and accelerator lever, Fig. 3 is a side view, and Fig. 4 is a front view of the steering support pipe section. 5 and 6 are a side view and a front view of the accelerator lever 1. 1...Accelerator lever, 2...Steering handle, 3...Pipe, 4...Steering support pipe, 6...Datsushi board.

Claims (1)

[Scope of utility model registration request] In an agricultural tractor in which the centers of the bonnet 9 and the dash board 6 are offset from the center of the body, the steering support pipe 4 is bent and provided from the center side of the dash board 6 toward the center side of the body, and the steering support pipe 4 and other parts are bent. The steering handle 2 is pivotally supported at the end of the steering support pipe 4, and an accelerator lever 1 is provided near the part of the steering support pipe 4 that supports the steering handle 2.
An accelerator device for an agricultural tractor, characterized in that the accelerator lever 1 is rotatably supported, and a grip portion of the accelerator lever 1 projects above a dart board 6.