Title:
作業車両
Document Type and Number:
Japanese Patent JP6903564
Kind Code:
B2
Abstract:
To provide a work vehicle capable of securely detecting abnormality in hydraulic pumps arranged on the work vehicle which is provided with the plurality of hydraulic pumps.SOLUTION: A work vehicle having a plurality of actuating parts comprises: a plurality of hydraulic actuators arranged corresponding to the plurality of actuating parts; a plurality of hydraulic pumps supplying hydraulic oil to at least one hydraulic actuator; a plurality of pressure sensors 51 to 53 detecting each of delivery pressures of the plurality of hydraulic pumps; an actuating condition determination part 54 determining actuating conditions created through combining the plurality of actuating parts; and an abnormality determination part 56 determining an abnormality occurrence in at least one hydraulic pump when a second relation, which is a relation of delivery pressures between the plurality of hydraulic pumps detected by the pressure sensors 51 to 53, is different from a first relation, which is a relation of preset delivery pressures between the plurality of hydraulic pumps corresponding to actuation conditions determined by the actuating condition determination part 54, as a comparison result of the first relation and the second relation.SELECTED DRAWING: Figure 6
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Inventors:
Okuyama Masanori
Tomohiro Shibata
Takahashi Mitsuhiro
Inazumi
Tomohiro Shibata
Takahashi Mitsuhiro
Inazumi
Application Number:
JP2017246081A
Publication Date:
July 14, 2021
Filing Date:
December 22, 2017
Export Citation:
Assignee:
Yanmar Power Technology Co., Ltd.
International Classes:
E02F9/24; E02F9/22; E02F9/26; F15B20/00
Domestic Patent References:
| JP11200423A | ||||
| JP10054370A | ||||
| JP10054371A | ||||
| JP2002242849A | ||||
| JP2001241384A |
Foreign References:
| WO2017115837A1 |
Attorney, Agent or Firm:
Sano patent office
Patent Business Corporation Unias International Patent Office
Patent Business Corporation Unias International Patent Office