Work vehicle and method of controlling work vehicle

Inactive Publication Date: 2019-11-07
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent offers a work vehicle and method of controlling it that can achieve efficient work while minimizing vibrations during travel.

Problems solved by technology

Therefore, the tires serve as a spring system and vibration occurs in a vehicular body around a specific vehicle speed.

Method used

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  • Work vehicle and method of controlling work vehicle
  • Work vehicle and method of controlling work vehicle
  • Work vehicle and method of controlling work vehicle

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Embodiment Construction

[0017]A work vehicle according to an embodiment of the present disclosure will be described below with reference to the drawings. The same elements have the same reference characters allotted in the description below and their labels and functions are also the same. Therefore, detailed description thereof will not be repeated.

[0018]A construction of a motor grader representing one example of a work vehicle to which the concept of the present disclosure is applicable will initially be described.

[0019]FIG. 1 is a perspective view schematically showing a construction of a motor grader in one embodiment of the present disclosure. FIG. 2 is a side view schematically showing the construction of the motor grader in one embodiment of the present disclosure.

[0020]As shown in FIGS. 1 and 2, a motor grader 1 in the present embodiment mainly includes running wheels 11 and 12, a vehicular body frame 2, a cab 3, and a work implement 4. Motor grader 1 includes components such as an engine arranged...

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PUM

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Abstract

A first switch valve is connected to a cap-side circuit of a lift cylinder. A second switch valve is connected to a head-side circuit of the lift cylinder. A first accumulator is connected to the cap-side circuit of the lift cylinder with the first switch valve being interposed. A second accumulator is connected to the head-side circuit of the lift cylinder with the second switch valve being interposed. A third switch valve is connected between the first accumulator and the second accumulator.

Description

TECHNICAL FIELD[0001]The present invention relates to a work vehicle and a method of controlling a work vehicle.BACKGROUND ART[0002]A motor grader does not have a suspension function in its undercarriage in order to ensure working performance in such works as land-grading works, road cutting works, and excavation works. In addition, the motor grader includes hollow tires. Therefore, the tires serve as a spring system and vibration occurs in a vehicular body around a specific vehicle speed. When the vehicular body vibrates, a vehicle speed should be lowered in order to avoid vibration during travel.[0003]For example, Japanese Utility Model Laying-Open No. 2-132754 discloses a technique for suppressing vibration. A motor grader in this literature includes a blade lift cylinder connected to a work implement, a switch valve connected to a cap side of the blade lift cylinder, a switch valve connected to a head side of the blade lift cylinder, and an accumulator connected to the two switc...

Claims

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Application Information

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IPC IPC(8): E02F9/22E02F3/815
CPCE02F9/2267E02F9/2285E02F9/2228E02F3/815E02F3/7636E02F3/844E02F9/2217
Inventor HARADA, MUNEOONO, YUTAKA
Owner KOMATSU LTD
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