Title:
作業機械
Document Type and Number:
Japanese Patent JP6903250
Kind Code:
B2
Abstract:
A work machine capable of driving each actuator more speedily and more accurately by ensuring high operability in a case of operator's manual operation, while accurately supplying a hydraulic fluid at a target flow rate to the actuator without depending on a load fluctuation in a case of automatic control over a machine body in response to a command input from a controller is provided. The controller controls a plurality of auxiliary flow controllers in such a manner that supply flow rates to a plurality of directional control valves from hydraulic pumps either fluctuate in response to load fluctuations of a plurality of hydraulic actuators when an area limiting control function invalidation instruction is issued, or do not fluctuate in response to the load fluctuations of the plurality of hydraulic actuators when an area limiting control function validation instruction is issued.
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Inventors:
Kumagai Kento
Shinya Imura
Genroku Sugiyama
Katsuaki Odaka
Yasuki Tsuriga
Takaaki Chiba
Shinya Imura
Genroku Sugiyama
Katsuaki Odaka
Yasuki Tsuriga
Takaaki Chiba
Application Number:
JP2021508654A
Publication Date:
July 14, 2021
Filing Date:
March 28, 2019
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/22
Domestic Patent References:
| JP2018080510A | ||||
| JP3564911B2 | ||||
| JP3056254B2 | ||||
| JP2005121155A | ||||
| JP8013547A | ||||
| JP6159309A | ||||
| JP2016061387A |
Foreign References:
| US20090159302 |
Attorney, Agent or Firm:
Kaichi International Patent Office