JP3157398B2 - Seat lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat elevating device for a working vehicle for construction, transportation, agriculture and forestry, etc., particularly for a driver suitable for use in a combine.

[0002]

2. Description of the Related Art Conventionally, there has been known a work vehicle in which a driver's seat is mounted above a body structure so as to be adjustable only in the front-rear direction.

[0003]

In the case where a known seat is mounted above the body structure so as to be adjustable only in the front-rear direction, it is possible to operate the vehicle in an optimum driving posture according to the height and the body shape. Driving for a long time was difficult and often accompanied by fatigue.

[0004]

The present invention SUMMARY OF THE INVENTION, in the work vehicle having a seat (1) for the driver who rotatably supporting the front, the front of the seat (1), along the height direction A plate (4) having a plurality of holes (4a) is rotatably connected to the plate (4) and the lower front surface of the seat (1).
And a cover (12) for covering any of the multi-stage holes.
Left and right fenders covering the left and right wheels through (4a)
First bracket connecting front parts of (2a, 2b)
At (3), can be attached from the front side of the seat (1)
And a cover (16) that covers the lower upper surface of the seat (1) is positioned in front of and behind the left and right fenders (2a, 2b).
Attached to the second bracket (6) connecting the middle part in the direction
At the same time, pedestals (7) having different heights were attached to the second bracket (6), and the rear bottom surface of the seat (1) was placed on the pedestal (7) to solve the above-mentioned problem.

[0005]

Based on the above configuration, when the driver sits on the driver's seat (1) of a working vehicle for construction, transportation, agriculture, forestry and the like and drives and operates the vehicle, the height of the driver is controlled. First, in order to be able to adjust the position of the seat (1) not only in the front-back direction but also in the up-down direction so that it can be steered in an optimum posture according to the body shape, first, a fulcrum at the front part of the seat (1) Four bolts fixing the plate (4) at the front of the seat (1) according to the height and body shape of the driver by rotating the seat (1) about the shaft (5) to a forward leaning posture. (13),
Loosen from the front side of the sheet (1) and open the hole in the plate (4)
Remove from (4a) and adjust the position of plate (4) up and down so that it is at the optimal height position . Next, four buttons
The seat (1) is inserted by inserting the bolt (13) into another hole (4a ).
Tightening from the front side, it determines the front height position of the seat (1) plate (4) fixed to the first bracket (3)
You. Next, the two right and left bolts (7a) of the pedestal (7) supporting the rear part of the seat (1) are loosened and detached from the second bracket (6) to correspond to the front height position of the seat (1). Te sheet (1) is approximately such that the horizontal and replaced with another base (7), by inserting the aforementioned right and left two bolts (7a) into the mounting hole of the pedestal (7), the bolt (7a ) And fix it to the second bracket ( 6 ) to determine the rear height position of the seat (1) . Thus, the aforementioned sheet (1)
The seat (7) in which the seat (1) has been replaced by rotating the seat (1) which has been tilted forward about the fulcrum shaft (5) at the front of the seat (7).
And complete height adjustment. In this case,
The front part and the middle part in the front-back direction of the cylinders (2a, 2b)
First and second connecting brackets (3, 6)
By connecting the left and right fenders (2a, 2b)
And the first and second brackets (3, 6) serve as reinforcing materials
This increases the rigidity of the fender itself,
Is also stabilized. Also, fenders (2a, 2b)
When the rigidity of the engine is increased, the power is transmitted from the engine to the seat (1).
The vibrations reached will be suppressed. Furthermore, in the present invention
Is a plate by the first bracket (3).
(4) and the lower front cover (12) are attached to the seat (1).
Because it is arranged so that it can be attached from the front side of the
Even if the height of the genders (2a, 2b) is high,
It is easy to adjust the height using a tool from the side ,
It has advantages such as excellent workability.

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

[0007]

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

An agricultural tractor as a working vehicle is a traveling machine.
The body is supported by the left and right wheels, and is
Sheet 1 which, as shown in FIGS. 1 and 2, the front left and right fender 2a covering the periphery of the left and right wheels, a first plate 4 which is the bracket 3 thus fixed for connecting the front part of 2b Is rotatably supported via a bracket 1a at a fulcrum 5 at the upper end . The bracket 1a is provided at a lower front portion of the seat 1 and has a U-shape that opens downward . Also, the rear of the seat 1
Left and right fender 2a, right and left two base 7 fixed to the second bracket 6 for connecting the intermediate portions of the longitudinal 2b,
It is mounted via a rubber cushion 8 which is mounted on the base 7.

The bracket 1a is fixed to the lower front part of the seat 1, as shown in detail in FIGS.
The left and right vertical surfaces have a multi-stage hole in the front-rear direction when viewed from the side, and a fulcrum pin 10 penetrates the hole and the fulcrum portion 5.
0 is rotatably supported with respect to the plate 4 by locking both ends of the “0” with a split pin 11. The optimum front and rear hole positions can be selected according to the height and body shape.

Whether the plate 4 is along the height direction when viewed from the front
One symmetrically having a multi-stage hole 4a, through the hole 4a, a front cover covering the first lower bracket 3 and the seat 1 1
2 and is fixed to the reinforcing plate 3 a of the first bracket 3 by four bolts 13. The optimal upper and lower hole positions can be selected according to the height and body shape.

The first bracket 3 includes the left and right fenders 2.
A fixing member for connecting the front portions of the left and right fenders 2a and 2b with two bolts 14 along the inside of the left and right fenders 2a and 2b, respectively.
The front part is reinforced by the L-shaped member 3a, and fixes the plate 4 and the front cover 12. like this
The first bracket 3 is provided between the left and right fenders 2a and 2b.
By connecting the front part, the first bracket 3
It acts as a member for reinforcing the fenders 2a and 2b,
This increases the rigidity of the fender itself.

The second bracket 6 is a fixing member for connecting the left and right fenders 2a and 2b in the front-rear direction similarly to the first bracket 3, but the vertical surfaces at both ends are left and right. Are fixed to the left and right fenders 2a, 2b along the inner sides of the fenders 2a, 2b by a single bolt 15, respectively. A rear cover 16 that covers the lower portion of the seat 1 is fixed to the upper surface, and a central spine 16a , Two pedestals 7 are fixed at left-right symmetric positions, and a cushion rubber 8 is mounted on an upper portion of the pedestals 7, and a rear portion of the seat 1 is placed thereon. This
The second bracket 6 includes the left and right fenders 2a,
2b by connecting the intermediate portions in the front-rear direction.
The bracket 6 cooperates with the first bracket 3 and the left and right fens.
Acts as a member for reinforcing the dampers 2a and 2b,
The rigidity of the fender itself is increased.

The pedestal 7 can be replaced with another suitable pedestal as a vertical position adjusting member so that the seat position becomes substantially horizontal in accordance with the above-mentioned optimal vertical hole position of the plate 4.

The front central portion of the rear cover 16 has a large 16b portion so that the fulcrum pin 10 of the fulcrum portion 5 and the split pins 11 at both ends do not interfere when the position of the plate 4 is adjusted up and down. Notched.

FIGS. 3 and 4 are views in which the seat 1 is mounted at a low position, and FIGS. 5 and 6 are mounting views of a conventional seat which cannot be adjusted up and down.

Now, when the driver sits on the driver's seat 1 of the agricultural tractor and operates the tractor, he or she can operate the tractor in an optimal posture according to the height and body shape of the driver. In order to adjust the position of the seat 1 not only in the front-back direction but also in the up-down direction, first, the seat 1 is turned around the fulcrum 5 at the front of the seat 1 to assume a forward leaning posture, According to the body shape, the four bolts 13 fixing the plate 4 at the front part of the seat 1 are loosened from the front side of the seat 1 to be disengaged from the holes 4a of the plate 4 to reach the optimum height position. The position of the plate 4 is adjusted up and down so as to be as follows. Next
In the same manner, four bolts 13挿換to <br/> tightened to another hole 4a with a, to fix the plate 4 to the first bracket 3 Ru decided seat front height. Next, the two right and left bolts 7a of the pedestal 7 supporting the rear portion of the seat 1 are loosened and detached from the second bracket 6, so that the seat 1 becomes substantially horizontal in accordance with the front height position of the seat 1. Then, replace it with another pedestal 7, insert the two left and right bolts 7 a into the mounting holes of the new pedestal 7, tighten the bolts 7 a, and fix them to the second bracket 6 to secure the rear height position of the seat 1. Decide. Furthermore,
The seat 1, which has been tilted forward around the fulcrum 5 at the front of the seat 1, is rotated to place the seat 1 on the pedestal 7,
Complete height adjustment.

[0017]

According to the present invention, the lower front surface of the plate and the sheet are provided.
Cover that covers the front of the left and right fenders
Bracket so that it can be mounted from the front side of the seat.
The seat position can be adjusted not only in the front-back direction, but also in the up-down direction, so that the optimal driving posture for the driver's height and body shape is obtained, so that it can withstand long hours of driving without fatigue. Became. Also, the height of the left and right fenders
Height adjustment using a tool from the front even when the height is high
Therefore, there are advantages such as easy work.
In addition, the front part of the left and right fenders and the middle part
And the second bracket
Then, these first and second brackets connect the left and right fenders.
It works as a reinforcing material by connecting it to increase the rigidity of the fender.
And stabilize the seat itself.
Wear. Also, when the rigidity of the fender is increased, the engine
Has the effect of suppressing vibration transmitted from the
I do.

The seat is supported by a fender which is supported by a vibration-proof member or the like from a body structure such as an engine or a transmission case via a first and a second bracket through a first and a second bracket. Therefore, it became possible to drive comfortably without transmitting the high frequency natural vibration of the aircraft structure.

[Brief description of the drawings]

FIG. 1 is a side view in which a seat is mounted at a high position.

FIG. 2 is a front view in which a seat is mounted at a high position.

FIG. 3 is a side view in which a seat is mounted at a low position.

FIG. 4 is a front view in which the seat is mounted at a low position.

FIG. 5 is a side view of a conventional seat.

FIG. 6 is a front view of a conventional seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Fender 3 First bracket 4 Plate 6 Second bracket 7 Pedestal 8 Cushion rubber 12 Front cover 16 Rear cover

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60N 2/00-2/72

Claims (1)

(57) [Claims] 1. A work vehicle having a driving seat whose front portion is rotatably supported, wherein a plate having holes in multiple stages along the height direction is rotatably connected to the front portion of the seat, A cover that covers the lower front surface of the plate and the sheet,
Covers the periphery of the left and right wheels through any of the multi-stage holes
With the first bracket connecting the front parts of the left and right fenders,
The cover is disposed so as to be attachable from the front side of the seat and covers a lower upper surface of the seat.
A second bracket for connecting the middle part in the front-back direction of the gender
And a pedestal having a different height is attached to the second bracket, and a rear bottom surface of the seat is placed on the pedestal.