driving vehicle

Abstract

The purpose of the present invention is to easily carry out manual operations for operating tools when inclination attitude for front, back, left, and right of a traveling machine body is changed by a manual operation of a height operating tool or inclination operating tool. This traveling vehicle is provided with: a traveling machine body (1) supported by left and right traveling units (2); a rolling actuator (38) that changes the inclination attitude of the traveling machine body (1) in the left and right directions; and a pitching actuator (177) that changes the inclination attitude of the traveling machine body in the front and back directions. A vehicle height operating tool (57) that carries out operations changing the vehicle height for the traveling machine body (1) is provided on either of a steering operating tool (11) disposed in front of an operator seat (12) on the traveling vehicle body (1) or a steering column (46) that supports the steering operating tool (11), and an inclination operating tool (56) that carries out operations for changing the inclination attitude of the traveling machine body (1) is provided on the other.

Description

technical field [0001] The present invention relates to reaping grain stalks planted in the field, a combine harvester for collecting grains, a grain stalk for harvesting feed, a feed combine harvester for collecting feed, or a transport vehicle traveling on uneven ground. More specifically , relates to a traveling vehicle having a traveling portion such as a pair of left and right traveling crawlers. Background technique [0002] Conventionally, a combine harvester as an example of a traveling vehicle has a traveling body supported by left and right traveling parts, a left and right pair of vehicle height adjustment hydraulic cylinders as roll actuators for changing the inclination posture of the traveling body in the left and right directions, and a changing traveling body. A pair of left and right hydraulic cylinders for tilting forward and backward as pitch actuators. In such a combine, the technique of tilting the traveling body forward, backward, left, and right by te...

AI Technical Summary

Problems solved by technology

For this reason, there is a need for the operator seated on the driver's seat to move his hand away from the steering operation part or extend his hand to manually operate the vehicle height operation part and tilt operation part, and the manual operation of these operation parts is troublesome. Problems in use

[0008] In addition, in the aforementioned prior art, when the traveling body is moved up and down by the telescopic movement of both vehicle height adjustment hydraulic cylinders, or when the traveling body is tilted forward and backward by the telescopic movement of both front and rear tilting hydraulic cylinders, , Due to the relationship between the inclination of the field surface and the left and right weight balance of the traveling body, the load applied to the left and right vehicle height adjustment hydraulic cylinders or the left and right front and rear tilting hydraulic cylinders is different on the left and right, and the hydraulic cylinder with a large load Difficult to stretch and easy to shorten

For this reason, there is a speed difference between the left and right vehicle height adjustment hydraulic cylinders or the telescopic drive of the left and right front and rear tilting hydraulic cylinders. maintained at a certain point such a problem

[0009] Furthermore, in the above-mentioned prior art, in order to maintain the horizontal posture of the traveling body with respect to the ground, in the process of executing the tilt control to change the tilt posture in the front, rear, left, and right directions, there are problems due to the inclination of the field surface, etc. The vibration of the traveling body, etc., causes the tilt posture of the traveling body to change rapidly or the sensor for checking the tilt angle checks excessively

If the inclination control is continued in such a state, there is a problem that the traveling body changes excessively in the front-rear or left-right direction (vibration), and the riding comfort of the traveling body deteriorates.

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