JPS6235623Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention provides a fuselage frame as the main engine frame of the fuselage, and places the engine on the fuselage frame via anti-vibration rubber. The axle case and the like relate to a foot axel device in a frame support type agricultural tractor that is fixed to the body frame.

(b) Prior Art A conventional foot accelerator device has a pivot portion on the step.

For example, as in Japanese Utility Model Application Publication No. 56-76529.

In this conventional technology, it is necessary to reinforce the strength of the step in order to provide a support part for the foot axel device, and it is troublesome to assemble the foot axel after assembling the step, so the foot axel device is first installed on the step. It had to be a semi-assembled product, and even if parts were to be replaced, even if the step or foot axle were damaged, both had to be replaced.

In addition, there were also drawbacks such as bending or deflection of the steps, which caused the accelerator to always be in the accelerator state and misalignment of the link relationships.

(c) Problems to be solved by the invention The present invention solves these problems by attaching the foot axel to the frame instead of attaching it to the step.

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

In a configuration in which body frames 1, 1 are provided as main machine frames extending from the front end to the rear end of the tractor, and the engine E is supported on the body frames 1, 1 via anti-vibration rubber, the body frame 1 is shown in a rear cross-sectional view as follows. Place the U-shaped frame facing inward, and
A pivot piece 9 is fixed inside the shape of the figure, and pivotally supports the pedal rod 2a of the foot accelerator pedal 2 inserted from the outside of the fuselage frame 1, so that the foot accelerator pedal 2 protrudes outside the fuselage frame 1. A step 15 is fixedly installed on the lower side of the fuselage frame 1.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is a drawing showing a foot accelerator device on the right side of an agricultural tractor, FIG. 2 is a rear view showing the same foot accelerator device, and FIG. 3 is an enlarged view showing a support portion of a foot accelerator pedal 2.

The engine E is disposed within the bonnet 18, and is supported in a floating state with respect to the fuselage frames 1, 1 via anti-vibration rubber. A clutch housing 17 is fixed to the rear surface of the engine E,
It is supported integrally with engine E by anti-vibration rubber.

A decompression lever 13 for operating decompression of the engine E is provided on the rear surface of the dash board 11, and a fuel stop lever 19 is also provided below the dash board 11. 20 is a wire for the fuel stop lever, and 8 is a wire for the accelerator device.

The accelerator device has two types: an accelerator lever 5 that is manually operated by the operator, and a foot accelerator pedal 2 that increases the rotation speed from the position operated by the accelerator lever 5 and returns to the accelerator lever 5 position when the pedal is released. This relates to a support device for the foot accelerator pedal 2.

The bent support shaft portion of the accelerator lever 5 is pivotally supported within the side cover 12 at the bottom of the dart board by a reinforcing plate 25 that reinforces the support stand 29 of the fuel tank 30. An arm 4 is fixed to the support shaft of the accelerator lever 5, and an attached spring is interposed between the arm 4 and the reinforcing plate 25, so that the arm 4 stops at the rotated position.

In particular, when the engine is in the idling rotation position, the detent device 4a is configured to enable the engine to intuitively determine that the engine is in the idling position.

Also, the bell crank arm 7 is connected to the accelerator lever 5.
The link 3 of the accelerator pedal 2 is pivotally connected to the rear end of the bell crank 7 by a pin 6. Also, the front end of the bell crank 7 is
It is connected to wire 8.

The aforementioned pin 6 protrudes toward the arm 4 side, and
Therefore, as the accelerator lever 5 rotates forward, the pin 6, bell crank 7, foot accelerator pedal 2, etc. move toward the engine speed increasing side. When the accelerator lever 5 is rotated toward the low rotation side, the bell crank 7 is also moved toward the low rotation side along with the arm 4 by a separately provided biasing spring.

When the accelerator pedal 2 is depressed, the pin 6 separates from the arm 4 and rotates upward, so the bell crank 7 pulls the wire 8 and increases rotation without being restricted by the accelerator lever 5. .

When the foot accelerator pedal 2 is stopped being depressed, the wire 8 is pulled, so the bell crank 7, pin 6, link 3, and pedal 2 return to their original positions, and the accelerator lever 5 returns to the set rotational speed.

The mounting base 29 of the fuel tank 30 is supported at the front by a support fitting 26 protruding from the mounting base 27 of the steering gear box 28, and supported at the rear by the seat of the steering gear box 28.

The steering gear box mounting table 27 is suspended over the left and right fuselage frames 1, 1.

The right fuselage frame 1 is constituted by a U-shaped frame, and this U-shape faces inward, and the pivot piece 9 of the pedal rod 2a of the accelerator pedal 2 is provided inside this. It is.

The pedal rod 2a is bent into a crank shape and also serves as a pivot shaft, and an arm 10 is provided at the inner end of the pivot shaft to connect the link 3.

Also, the foot accelerator pedal 2 of the aircraft frame 1
Right and left steps 15, 15 are fixed immediately below the pivot portion.

The foot accelerator pedal 2 is
It protrudes upward and the operator can step 15.
It is configured so that it can be operated by stepping on it while keeping your foot on it.

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

First, since the foot accelerator device is pivotally supported on the body frame 1 extending from the front end of the tractor body to the rear end, there is no longer a need for the foot accelerator pedal to be pivotally supported on the step itself, as was the case in the past.

As a result, when the operator stands up on the step, the link or arm of the foot accelerator pedal 2 may be bent or stretched due to bending or deflection of the step, resulting in unexpected accelerator operation. This reduced the danger caused by the aircraft's high-speed darts.

Second, unlike conventional foot accelerator pedals 2, the position of which is easily changed due to deflection of the steps, and accelerator lever 5, which is securely fixed on the dart board side.
In order to absorb this, it was necessary to provide a margin on the support side of the accelerator lever 5, but in the case of the present invention, the foot accelerator pedal 2
is firmly supported by the fuselage frame 1,
Since the positional relationship between the two links does not shift and no extra shafts, brackets, etc. are attached to the step, it is easy to assemble with precision, and a reliable foot accelerator pedal can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a drawing showing the foot accelerator device on the right side of an agricultural tractor, FIG. 2 is a rear view showing the same foot accelerator device, and FIG. 3 is an enlarged plan view showing the support portion of the foot accelerator pedal 2. E... Engine, 1... Frame, 2... Foot accelerator pedal, 2a... Pedal rod, 9... Pivot piece, 15... Step.

Claims (1)

[Scope of utility model registration request] In a configuration in which body frames 1, 1 are provided as main machine frames extending from the front end to the rear end of the tractor, and the engine E is supported on the body frames 1, 1 via anti-vibration rubber, the body frame 1 is shown in a rear cross-sectional view as follows. It is composed of a U-shaped frame facing inward,
A pivot piece 9 is fixed inside the U-shape, and pivotally supports the pedal rod 2a of the foot accelerator pedal 2 inserted from the outside of the fuselage frame 1, so that the foot accelerator pedal 2 is attached to the fuselage frame 1. This foot accelerator device for an agricultural tractor is characterized in that a step 15 is fixed to the lower side surface of the body frame 1 in the outwardly projecting part.