JPS647913B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention provides vibration-proof support for a tractor seat so as to obtain a good cushioning condition while being adjustable back and forth, and also provides tilled soil around the seat. This relates to a structure in which a sturdy dust cover is provided to prevent dust from reaching the surface.

(b) Prior Art Conventionally, a technique such as Japanese Utility Model Publication No. 56-30509 is known as a technique of providing a dust cover under the seat that extends to both the left and right fenders.

In addition, the technology to install anti-vibration rubber under the seat has also been developed.
A technique such as that disclosed in Japanese Patent No. 56-127183 is known.

(c) Problems to be solved by the invention In recent years, the goal of tractors has been shifting from the enhancement of functionality to the comfort of operation, and the accommodation near the seat, which had previously been sacrificed for enhancement of functionality, has been shifting. There was a demand for improved sexual quality.

In order to meet this demand, the present invention improves the cushioning properties of the seat, and also improves the cushioning properties of the seat.In addition, the front dust cover solves the problem of conventional seats being open on the inside of the fender, which caused dust to fly up and cold wind to blow up. It is blocked by installing a rear dust cover,
The aim is to improve the comfort and maneuverability of the operator.

(d) Means for Solving the Problems The objects of the present invention are as described above, and the configuration for achieving the objects will now be explained.

A hydraulic case 16 is placed on the rear axle case 15, and a dust cover 7 is fixed on the upper surface of the hydraulic case 16 via front and rear fixed anti-vibration rubbers 18a, 18b. A dust cover 6 is provided, and a rear dust cover 8 is extended to the rear part, and a front and rear sliding rail 31 is further fixed on the dust cover 7, so that a slider 30 can be slid back and forth on the front and rear sliding rail 31. A pivot shaft 35 is provided at the front end of the slider 30, a sliding vibration isolating rubber 29 is arranged at the rear, and the rear of the seat 27, whose front end is pivoted by the pivot shaft 35 so as to be vertically movable, is slidable. It is placed on a vibration isolating rubber 29, and the sliding vibration isolating rubber 29 is configured to slide back and forth between the fixed vibration isolating rubbers 18a and 18b when viewed from the side.

(E) Embodiment The object 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 side sectional view of the fender and dust cover part, 3 is a front view showing the mounting portion of the seat, and FIG. 4 is a side view.

A clutch housing 2 is fixed to the rear surface of the engine inside the hood, and a rear axle case 15 is fixed to the rear surface of the clutch housing 2.

Hydraulic case 1 on the top of rear axle case 15
6 is placed on the hydraulic case 16, two fixed anti-vibration rubbers 18a, 18a are arranged on the hydraulic case 16, and the hydraulic case 1
Two fixed anti-vibration rubbers 1 on the front support 34 of 6
8b and 18b are provided.

The dust cover 7 is placed on the fixed anti-vibration rubbers 18a and 18b, and at the same time the seat support plate 33 is inserted into the bolts of the fixed anti-vibration rubbers 18a and 18b and tightened together.

Front and rear sliding rails 31, 3 are provided on the upper surface of the seat support plate 33.
1 are provided in parallel, and this front and rear sliding rail 3
Sliders 30, 30 are loosely fitted onto the top of the slider 1.

When the stopper 28 is released, the slider 30 and the seat 27 fixed thereto can be slid back and forth.

A seat 27 is rotatably supported forward via a pivot shaft 35 on the upper surface of the sliders 30, 30, and another set of sliding vibration-proof rubber 29, 29 is mounted on the rear sliders 30, 30. is provided, on which the rear of the seat is placed.

In FIG. 4, even if the seat 27 is slid between the frontmost and rearmost positions as shown by the two-dot chain line, the sliding vibration isolating rubber 29 is not as strong as the fixed vibration isolating rubbers 18a and 18b in side view. It is structured so that it is located in between.

An opening 7a is provided in the center of the dust cover 7 to facilitate adjustment and inspection of the hydraulic system. Usually, it is sealed with a seat support plate 33, which prevents mud from flying up from the tires and dust from entering, and also blocks noise from the transmission case.

A hydraulic lever guide plate 14 on which two of the hydraulic levers, a position control lever and a draft control lever, rotate is provided on the upper right side of the dust cover 7, and a hydraulic clutch-type main gear shift lever is provided on the left side of the seat. A guide plate 19 is provided.

Further, the rear part of the dust cover 7 is integrally bent upward to form a rear dust cover 8. Further, a doss box 10 is provided protruding from the rear dust cover 8, and a rotating cover 9 is covered on the upper surface.

The interior of the darts box 10 serves as a tool box for storing tools, etc., as a reinforcement between the fenders 1L and 1R, and as a mounting plate for license plates and the like.

At the tip of the dust cover 7, a front dust cover 6 with a dogleg-shaped cross section is attached to the transmission case 17.
It is arranged with a notch so as to straddle it. Then, from the right hand side in the direction of travel, place the parking brake lever guide plate 2 on the V-shaped forward inclined surface.
3. Sub-shift lever guide plate 22, front wheel drive clutch lever guide plate 21, PTO shift guide plate 20
are arranged side by side.

Further, steps 5L and 5R are successively provided forward from the lower ends of the left and right front dust covers 6. The front part of the fender 1 overlaps with the outside of the rear part of the step 5 to cover the operator's feet, and the rear part of the step is arranged in a valley.

Side covers 4R, 4L are provided on the outside of steps 5L, 5R at the front ends where the fenders 1L, 1R end, to protect internal line filters, hydraulic pipes, etc. The side cover 4 can be removed during repair and inspection.

Windproof cover 25L, 25R from the tip of the step
is erected, and the windbreak cover 25 is supported by a foot guard 24 disposed across the inside of the bonnet.

Further, the case cover 3 extends forward from the transmission case notch of the front dust cover 6.

The case cover 3 has a U-shaped cross section, the front end is connected to the lower cover of the dash board, the rear end is connected to the front dust cover 6, and the lower left and right ends are connected to the step 5L,
Fixedly installed in each 5R.

A slight gap is formed between the clutch housing 21 and the outer periphery of the transmission case 17, and the gap provides sound and heat insulation.

The fender 1 has anti-vibration rubber 1 on the support plate 13 at the bottom.
1 and 11, the rear axle housing 12
fixed on top.

Also, on the sides of the fenders 1L and 1R are a dust cover 7, a rear dust cover 8, and a dart box 1.
Fixedly supported at 0.

As shown in FIG. 4, a stop valve 38 is projected from the hydraulic case 16 to a portion 6a on the front surface of the front dust cover 6.

Further, a rear cover 26 is welded and fixed to the rear ends of the fenders 1L and 1R, and a reflector and a flash lamp are attached to this rear cover 26.

(F) Effects of the Invention Since the present invention is configured as described above, it has the following effects.

First, the anti-vibration rubber 1 is fixed on the hydraulic case 16.
Dust cover 7 fixed via 8a, 18b
, the front and rear sliding rails 31, 31 and the slider 3
Although the dust cover 7, front dust cover 6, and rear dust cover 8, which are made up of wide plates, are structurally weak,
This can be reinforced.

Second, although the dust cover 7 itself cannot be moved back and forth, front and rear sliding rails 31, 31 are provided on the dust cover 7, and the front and rear sliding rails 31, 31 are provided on top of the dust cover 7.
By moving the sliders 30, 30 on the seat back and forth, the position of the seat 27 can be adjusted using the sliders 30, 30.

Thirdly, fix the dust cover 7 itself using the anti-vibration rubber 1.
8a and 18b in a vibration-isolated manner, and a sliding vibration-proof rubber 29 is further provided on top of the dust cover 7 to support the seat 27, so two levels of vibration-proof rubber are interposed, upper and lower. This means that the cushioning when the operator is sitting has been improved.

Fourthly, the seat 27 can be adjusted back and forth by sliding the sliders 30, 30, but since the sliding vibration isolating rubber 29 also moves as the seat 27 moves back and forth, the cushioning is good no matter where the seat 27 is. can be in good condition.

Fifth, even if the sliding vibration isolating rubber 29 moves due to the back and forth movement of the seat 27, the vibration isolating rubber 18 is always fixed.
Since the fixed vibration isolating rubbers 18a and 18b and the sliding vibration isolating rubber 29 do not overlap, the vertical deflection of the dust cover 7 can also be used as a cushion. It can be done. This also made it possible to improve the comfort of the operator.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the fender and dust cover portion, FIG. 2 is a plan view, FIG. 3 is a front view showing the seat attachment portion, and FIG. 4 is a side view. 6... Front dust cover, 7... Dust cover, 8... Rear dust cover, 15... Rear axle case, 16... Hydraulic case, 18a, 1
8b...Fixed anti-vibration rubber, 27...Seat, 29...
Anti-vibration rubber, 30... slider, 31... front and rear sliding rail, 35... seat support plate.

Claims (1)

[Claims] 1 Hydraulic case 16 on rear axle case 15
The dust cover 7 is fixed on the upper surface of the hydraulic case 16 via the front and rear fixed vibration isolating rubbers 18a and 18b, and the front dust cover 6 is placed on the front of the dust cover 7, and the rear A dust cover 8 is extended, and a front and rear sliding rail 31 is fixed on the dust cover 7, and a slider 30 is supported on the front and rear sliding rail 31 so as to be slidable back and forth. A pivot shaft 35 is provided and a sliding rubber isolator 29 is arranged at the rear, and the rear of the seat 27, whose front end is pivoted by the pivot shaft 35 so as to be vertically movable, is placed on the sliding rubber isolator 29. , a seat support device for an agricultural tractor, characterized in that the sliding vibration isolating rubber 29 is configured to slide back and forth at a position between the fixed vibration isolating rubbers 18a and 18b when viewed from the side.