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Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/209920
Kind Code:
A1
Abstract:
A work machine according to the present invention includes a first hydraulic pump that supplies hydraulic fluid to a right traveling motor, a second hydraulic pump that supplies hydraulic fluid to a left traveling motor, a first regulator that controls capacity of the first hydraulic pump, a second regulator that controls capacity of the second hydraulic pump, and a controller that controls the first and second regulators. The controller computes a difference in operations amounts between left and right traveling operation devices, and in a case in which a difference in operations amounts is no less than a threshold value, corrects a regulator control signal corresponding to a smaller operation amount out of operation amounts of the left and right traveling operations devices to be increased with good responsivity, and controls the regulator corresponding to the smaller operation amount out of operation amounts of the left and right traveling operations devices by the corrected regulator control signal, while in a case in which the difference in operations amounts is smaller than the threshold value, corrects the regulator control signals corresponding to the operation amounts of the left and right traveling operations devices so as to be delayed, and controls the first and second regulators by the corrected regulator control signals.

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Inventors:
FURUGEN RYOTA (JP)
SUZUKI DAISUKE (JP)
BEPPU MITSUSHI (JP)
SHIRAKAWA YOSHIHIRO (JP)
Application Number:
PCT/JP2022/012069
Publication Date:
October 06, 2022
Filing Date:
March 16, 2022
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F9/22
Domestic Patent References:
WO2020184606A12020-09-17
WO2017056200A12017-04-06
Foreign References:
JP2012207491A2012-10-25
JPH093977A1997-01-07
JPS63105250A1988-05-10
JP2005054903A2005-03-03
JP2004301264A2004-10-28
JPH1072850A1998-03-17
JP2011245909A2011-12-08
Attorney, Agent or Firm:
KAICHI IP (JP)
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