Title:
建設機械
Document Type and Number:
Japanese Patent JP7096178
Kind Code:
B2
Abstract:
To provide a construction machine capable of continuing operation even when any one of a plurality of valves connecting a plurality of closing circuit pumps to a plurality of actuators is failed.SOLUTION: A controller 50 corrects opening/closing commands of a plurality of valves in order not to output opening commands to valves other than one valve connected to one closing circuit pump when one valve Vij of the plurality of the valves connecting one closing circuit pump Pi of a plurality of the closing circuit pumps P1, P2 to one actuator Aj of a plurality of actuators is determined to be in a failed state through determining if the plurality of valves V11, V12, V21, V22 are in failed states.SELECTED DRAWING: Figure 2
Inventors:
Hiromasa Takahashi
Shimizu Freedom
▲杉▼木 昭平
Kenji Hira
Shimizu Freedom
▲杉▼木 昭平
Kenji Hira
Application Number:
JP2019022014A
Publication Date:
July 05, 2022
Filing Date:
February 08, 2019
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/22; F15B20/00
Domestic Patent References:
| JP2018169015A | ||||
| JP63067412A | ||||
| JP2014205977A | ||||
| JP2017053386A | ||||
| JP2017053383A | ||||
| JP2018145985A | ||||
| JP2019049335A | ||||
| JP2020026826A |
Attorney, Agent or Firm:
Patent Attorney Corporation Kaichi
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