JPH06107134A - Working vehicle - Google Patents

Abstract

PURPOSE:To prevent a ground surface from damaging by controlling the ground pressure of a grounding member to support the front part of a vehicle body to be low. CONSTITUTION:A working vehicle is provided with a driving system traveling device 1, a leg member 3 whose one end is attached through a shaft to the front side of a vehicle body 2 so as to be vertically rotatable, a grounding member 4 attached through a shaft to the other end of the leg member 3 so as to be vertically rotatable, and a cooperating means 5 to positively rotate the grounding member 4 in connection with the rotation of the leg member 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle having a drive type traveling device.

[0002]

2. Description of the Related Art Conventionally, there is a work vehicle having a drive type traveling device in which one end portion of a leg member is pivotally attached to the front left and right of the vehicle body so as to be vertically rotatable. This is because the leg member is brought into a front-lowering inclined posture in which the other end portion is grounded, and then the traveling device is driven to move forward so that the leg member is rotationally erected, and thereby the front portion of the vehicle body is lifted. To do. After the front portion of the vehicle body is lifted, if the rear portion of the vehicle body is lifted by a jack or the like, the entire vehicle body is lifted and the traveling device is brought into a non-grounded state. As a result, the traveling device can be easily maintained.

[0003]

In the above-mentioned prior art, the grounding portion is formed on the grounding end side of the leg member by bending it into an L-shape in order to stabilize the standing state.
Therefore, when the leg member is tilted forward and the end portion is grounded, first, the corner portion of the grounding portion is grounded. When the traveling device is driven forward in this state, the leg members are rotationally erected while applying excessive ground contact pressure to the ground contact surface by this forward drive force. For this reason,
When such work is performed on the road or the like, the corners of the ground contact portion bite into the road surface and damage the road surface.

[0004]

In order to solve the above problems, the present invention takes the following technical means. That is, the drive-type traveling device 1, the leg member 3 whose one end is rotatably pivoted up and down in front of the vehicle body 2, and the leg member 3
A grounding member 4 axially rotatably attached to the other end is provided, and a connecting means 5 for positively rotating the grounding member 4 in association with the rotation of the leg member 3 is provided. The working vehicle is configured as described above.

[0005]

When carrying out the maintenance of the traveling device 1, first, the leg member 3 is rotated downward and the grounding member 4 is grounded. In this state, the leg member 3 is in an inclined posture, and the grounding member 4 is rotated with respect to the leg member 3 by the connecting means 5 to be in a posture substantially parallel to the grounding surface. That is,
The grounding member 4 grounds the entire grounding surface substantially at the same time. Then, after that, the traveling device 1 is driven. As a result, the leg member 3 rotates with respect to the vehicle body 2 while maintaining the position of the ground contact member 4, and reaches a standing posture. During this time, the grounding member 4 is rotated with respect to the leg member 3 by the connecting means 5 and maintains a posture substantially parallel to the grounding surface. Then, when the leg member 3 reaches the standing posture, the ground contact member 4 takes a posture substantially perpendicular to the leg member 3. As described above, the front portion of the vehicle body 2 is lifted. Then, after that, the rear portion of the vehicle body 2 is lifted by a jack or the like, and the lifting of the entire vehicle body 2 is completed.
As a result, the traveling device 1 is easily maintained.

As described above, the ground member 4 is connected to the vehicle body 2
During the lifting of the front part, since the posture is kept substantially parallel to the ground contact surface, the entire ground contact surface receives the load.
As a result, the ground pressure is kept small and the ground surface is not damaged. As described above, the maintenance work can be performed easily and smoothly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail by exemplifying a combine. The vehicle body 2 of the combine is provided with a machine base 6 above the left and right traveling devices 1 and 1, and above the machine base 6,
The threshing device 7 and the grain storage device 8 are arranged side by side, and a control unit 9, a prime mover 10 and the like are further provided. A mowing device 11 is provided in front of the threshing device 7 so as to be able to move up and down.

The left and right traveling devices 1 and 1 include a large number of rolling wheels 12 and 12 and front drive sprockets 13 and 13.
It is configured by winding the endless orbital zones 14, 14 around the. The large number of rolling wheels 12 and 12 are provided by being axially attached to the left and right rolling wheel frames 15 and 15 provided in parallel below the machine base 6. The drive sprockets 13 and 13 are mounted on the machine base 6 and driven by a mission case 16 driven and input by the prime mover 10. The drive state of the drive sprockets 13 and 13 by the mission case 16 can be changed and adjusted by an operation from the control section 9.

At the left and right front positions of the machine base 6,
One end of each of the square pipe-shaped leg members 3 and 3 is provided with a rotary shaft 17, 17.
It is pivotally attached vertically to the center. The leg members 3 and 3 are configured to be longer than the height from the ground surface of the traveling devices 1 and 1 to the machine base 6. Further, square pipe-shaped grounding members 4 and 4 are pivotally attached to the other ends of the leg members 3 and 3 so as to be vertically rotatable about the pivot shafts 18 and 18. Further, the supporting members 19, 1 are provided on the upper part of the rotating shaft 17, 17 of the machine base 6.
9 are erected, and the grounding members 4 and 4 are provided on the upper surface with a station.
20 and 20 are erected. Then, the support members 19 and 1
9 and the above-mentioned stations 20 and 20, respectively, interlocking rod 2
The shafts 1 and 21 are connected by a shaft. This configuration is the connection means 5
Is.

In a state where the leg members 3 and 3 are rotated upward and stored in the unused state by the lock devices 22 and 22, the ground members 4 and 4 are pushed by the interlocking rods 21 and 21 to push the leg members. Rotated downwards with respect to 3, 3
The posture is substantially parallel to the machine base 6. Then, as the lock devices 22, 22 are released to freely rotate the leg members 3, 3 downward, the interlocking rods 21, 21 are moved.
The grounding members 4, 4 rotate upward with respect to the leg members 3, 3 by the pulling action of. As a result, the grounding members 4 and 4 maintain the posture substantially parallel to the machine base 6 (the posture substantially parallel to the grounding surface) before reaching the grounding surface.

After the grounding members 4 and 4 are grounded along the grounding surface, the driving sprocket 13, 13 is operated through the mission case 16 by the operation of the control section 9.
Drive forward. As a result, the traveling devices 1, 1 are driven forward, and accordingly, the leg members 3, 3 rotate downward while maintaining the positions of the ground members 4, 4. As a result, the front part of the machine base 6 is lifted. Also during this time
The grounding members 4, 4 are maintained in their grounding postures by the pulling action of the interlocking rods 21, 21. Even if the front portion of the machine base 6 is lifted up, the rear side of the traveling devices 1 and 1 is still in the grounded state, so that there is no problem in forward traveling. When the leg members 3 and 3 are rotated until they are in a posture substantially perpendicular to the machine base 6, the ground members 4 and 4 are moved to the leg members 3 and 4.
The posture is substantially perpendicular to 3. Also, the leg members 3,
In the vicinity of the rotating shafts 17, 17, the stopper 3 is prevented from rotating beyond 3 by the stoppers 23, 23 attached to the lower side of the machine base 6. Further, the grounding members 4, 4 are also prevented from pivoting beyond them by contact between the stoppers 24, 24 provided on the upper surfaces of the grounding members 4, 4 and the leg members 3, 3. This completes the lifting of the front part of the machine base 6. Thereafter, the rear portion of the machine base 6 is lifted by the hydraulic cylinder type jack 25, whereby the lifting of the vehicle body 2 is completed, and the traveling devices 1, 1 are brought into a non-grounded state,
Easy maintenance.

As described above, since the grounding members 4 and 4 always maintain the posture parallel to the grounding surface during use, it is possible to always receive a load from the entire surface thereof and prevent the grounding pressure from becoming excessive. Further, separately from the above, the ground members 4, 4 are fixed to the leg members 3, 3 at a substantially right angle so that the ground members 4, 4 can expand and contract. A shifter 2 for slidably fitting the auxiliary grounding members 26, 26 into the hollow portions of the grounding members 4, 4 and sliding the auxiliary grounding members 26, 26.
7, 27 are provided on the side surfaces of the grounding members 4, 4. And
The interlocking rods 21 and 21 are connected to one ends of the shifters 27 and 27. As a result, as the leg members 3 and 3 are rotated downward, the shifters 27 and 27 are rotated by the pulling action of the interlocking rods 21 and 21, and the auxiliary ground members 26 and 26 are moved to the ground members 4 and 4. From the rear to the outside. As a result, the contact length is increased, and the stability in the lifted state can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a working state in an embodiment of the present invention.

FIG. 2 is a side view of the combine according to the embodiment of the present invention in a lifted state.

FIG. 3 is a side view of the combine according to the embodiment of the present invention in a grounded state.

FIG. 4 is a plan view of the combine in the embodiment of the present invention.

FIG. 5 is an explanatory view of a working state in another embodiment.

FIG. 6 is a side view of the combine according to another embodiment in a lifted state.

FIG. 7 is a side view of the combine according to another embodiment in a grounded state.

FIG. 8 is a plan view of a combine according to another embodiment.

[Explanation of symbols]

 1 traveling device 2 vehicle body 3 leg member 4 grounding member 5 connecting means

Claims (1)

[Claims] 1. A drive-type traveling device 1, a leg member 3 whose one end is rotatably pivoted up and down in front of a vehicle body 2, and a vertically rotatably pivotally attached to the other end of the leg member 3. A working vehicle comprising a grounding member 4 and a connecting means 5 for positively rotating the grounding member 4 in association with the rotation of the leg member 3.