JPS5819934Y2 - tractor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tractor in which a gear shift operation lever is disposed between a driver's seat and wheels for a gear shift operation shaft that projects from a transmission case in the same direction as the axle projecting direction. .

Conventionally, in this type of tractor, the guide plate for the gear shift operation lever was installed between the operator's seat and the standing wall of the fender located on the side of the operator's seat, and the grip part of the gear shift lever was placed above the guide plate. This had the drawback that it was too close to the operator seated in the grip of the gear shift control lever in the left-right direction of the aircraft, making it difficult to swing the shift control lever.

In order to eliminate this inconvenience, the shift operation lever is bent laterally and outwardly along the inward vertical wall and top surface of the fender, and its grip is placed within the left and right width of the fender. Although it is conceivable to position the fender in this position, this configuration has the disadvantage that the fender's grip portion is positioned too high, making it difficult to swing the fender.

The technical problem that this invention aims to solve is to improve the shape of the gear shift control lever and the mounting position of the guide plate so that the position of the grip of the shift control lever relative to the pilot's seat can be adjusted to the best possible position in the horizontal and vertical directions of the aircraft. The purpose is to set it in an appropriate position that is easy to use.

The technical means taken to solve the above problem was to attach a wall inside the fender to the upper surface of the front descending wall that connects the horizontal upper surface of the fender that covers the wheels and the rising wall on the front side of the fuselage. A gear shift operation lever is provided with a guide plate for the gear shift operation lever located outside of the side vertical wall portion, and is bent along the upper surface of the vertical wall portion and the front downwardly inclined wall portion of the fender on the inside of the fuselage body. The lever is made to protrude upward through the gear change guide groove of the guide plate attached to the upper surface of the front downwardly sloping wall portion, and the grip portion thereof is attached to the fender.
The reason is that it is located within the left and right width.

The effects produced by the above technical means are as follows.

■ By bending the gear shift control lever along the upper surface of the standing wall part on the inside of the fuselage and the top surface of the front downward sloping wall part of the fender, the grip part can be placed within the left and right width of the fender and also close to the front downward sloping wall part. Since it is located above the fender, it is possible to provide sufficient distance in the left and right width direction between the driver's seat and the driver's seat to an appropriate position for easy operation.
By being located above the front downwardly sloping wall portion rather than the horizontal upper surface portion of the wall, it is easy to set the vertical height position to an appropriate height without setting it higher than necessary.

■ By attaching the guide plate for the gear shift operating lever to the front downwardly sloping wall, the handle of the gear shift operating lever can be set at a relatively low position so that it can be operated diagonally from the lower front to the upper rear. This makes it easier to oscillate the gear shift lever in accordance with the natural movement of the arm, and the guide plate itself is installed on the side of the operator, making it easier to swing the gear shift lever. It is also easy to confirm the operating position.

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

In a tractor configured to attach a working device such as a rotary tiller or a plowing device to the rear of the machine, a speed change operation shaft 4 of a power take-off shaft 1 for transmitting driving force to the working device is installed on the rear axle 2, 2. A gear shift operation lever 6 extending from the transmission case 3 in the same direction as one axle 2 and disposed between the wheel and the left side of the pilot seat 5 supported by the transmission case 3 is swingable in the longitudinal direction of the aircraft. It is connected to the speed change operation shaft 4.

At the front downwardly sloping wall portion 7e that connects the horizontal upper surface portion 7b of the rear wheel fender 7 and the rising wall portion 7d on the front side of the fuselage, there is a slope between the fender vertical wall portion 7a on the inward side of the fuselage and the horizontal upper surface portion 7b. A surface portion 7c is formed, and a cross-sectional guide plate 8 is located on the upper surface side of the vertical wall portion 7a, the horizontal upper surface portion 7b, and the front downwardly inclined wall portion 7e, forming a part of the front downwardly inclined wall portion. The shift operation lever 6, which is attached to the fender 7 and loosely inserted into the insertion hole 9 of the guide plate 8, is moved along a guide groove 8b formed in an upward facing portion 8a of the guide plate 8 indicating the shift position. It is configured so that it can be operated by swinging.

In other words, the gear shift operation lever 6 is operated by the upright wall portion 7a, the inclined surface portion 7c, and the front downwardly inclined wall portion 7e of the fender 7.
By bending it along the upper surface and defining its swing range along the front downwardly inclined wall portion 7e, the shift operation lever 6
The grip part 6a is located at a height that is easy to operate, and
By locating the grip portion 6a outward from the fender vertical wall portion 7a, the distance between the grip portion 6a and the cockpit 5 can be easily manipulated, and the shift operation lever 6 can be easily operated as a whole. It is composed.

On the right side of the pilot seat 5, there is provided an auxiliary gear shift lever 11 having the same operating structure as the gear shift operating lever 6, and is capable of switching the driving gear range between high and low levels separately from the main transmission (not shown). It is configured so that it can be used.

FIG. 4 shows a second embodiment, in which a step is formed at the shoulder of the fender 7 between the vertical wall portion 7a and the horizontal upper surface portion 7b, and a guide plate 8 of a cross-sectional shape is connected to the vertical wall portion 7a and upwardly. They are attached to the fender 7 so as to be located on the respective extensions of the surface portions 7b, thereby increasing the strength of the fender 7.

[Brief explanation of the drawing]

The drawings show an embodiment of the tractor according to the present invention; FIG. 1 is a side view of the entire tractor, FIG. 2 is a partially cutaway front view of the main part, and FIG. 3 is a partially cutaway side view of the main part. , FIG. 4 is a partially cutaway front view of the main part showing another embodiment. 3...Transmission case, 5...Control seat,
6... Speed control lever 7... Fender 17a... Vertical wall part, 7b... Horizontal upper surface part, 7c... Slanted surface part , 7d...
...Rising wall part, 7e...Front downward slope wall part, 8...Guidance board.

Claims (1)

[Scope of utility model registration request] A speed change operation lever 6 is attached to a speed change operation shaft 4 that projects from the transmission case 3 in the same direction as the axle projecting direction, and is connected to the speed change operation lever 6 so as to be able to swing freely around the 4-axis center of the speed change operation shaft. On the upper surface of the front downwardly sloping wall portion 7e that connects the horizontal upper surface portion 7b of the fender 7 that covers the wheels and the rising wall portion 7d on the front side of the machine body,
A guide plate 8 for the gear shift operation lever 6 is attached to the fender 7 at a position outside the vertical wall portion 7a on the inside of the body, and a vertical wall portion 7a on the inside of the body of the fender 7 and a front downward slope. A shift operation lever 6 bent along the upper surface of the inclined wall portion 7e is projected upward through the shift guide groove 8a of the guide plate 8 attached to the upper surface of the front downwardly inclined wall portion 7e, and the grip portion 6a is The fender-7
A tractor characterized by being located within the left and right width.