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Patent Searching and Data


Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/250573
Kind Code:
A1
Abstract:
Provided is a work machine capable of suppressing acceleration of a turning motor at a time unintended by the operator. The work machine comprises: first and second work actuator control valves (51, 52); a work command regulator (60) that changes, according to a work adjustment command, a work command to be input to the second work actuator control valve (52); and a controller (90) that includes an adjustment command unit to input the work adjustment command to the work command regulator (60). The adjustment command unit performs asynchronous control in an independent work operation state and synchronous control in a combined operation state including turning deceleration operation and work operation. For synchronous control, the adjustment command unit generates a work adjustment command that makes a minimum work operation level for opening the first work actuator control valve (51) equivalent to a minimum work operation level for closing the second work actuator control valve (52) and inputs the same to the work command regulator (60).

Inventors:
HIRAOKA KEI
FUJITA YUICHIRO
Application Number:
PCT/JP2020/017256
Publication Date:
December 17, 2020
Filing Date:
April 21, 2020
Export Citation:
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Assignee:
KOBELCO CONSTR MACH CO LTD (JP)
International Classes:
E02F9/20; E02F9/22; F15B11/042; F15B11/08; F15B11/17
Domestic Patent References:
WO2019054365A12019-03-21
Foreign References:
JP2019027261A2019-02-21
JP2005083427A2005-03-31
EP2653619A12013-10-23
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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