Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/071389
Kind Code:
A1
Abstract:
This work machine comprises: a pressure adjustment device capable of adjusting a driving pressure of a turning hydraulic motor; and a controller that controls the pressure adjustment device. The controller calculates a target pressure of the turning hydraulic motor, on the basis of a speed deviation between a target speed of the turning hydraulic motor calculated on the basis of an operation signal of an operation device and an actual driving speed of the turning hydraulic motor detected by a speed sensor, limits the target pressure of the calculation result so that an input horsepower to the turning hydraulic motor which is estimated on the assumption that the driving pressure of the turning hydraulic motor reaches the target pressure after a predetermined time does not exceed a limit value, and controls the pressure adjustment device on the basis of the limited target pressure.
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Inventors:
AMANO HIROAKI (JP)
KUMAGAI KENTO (JP)
NISHIKAWA SHINJI (JP)
NARAZAKI AKIHIRO (JP)
KUMAGAI KENTO (JP)
NISHIKAWA SHINJI (JP)
NARAZAKI AKIHIRO (JP)
Application Number:
PCT/JP2023/035674
Publication Date:
April 04, 2024
Filing Date:
September 29, 2023
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
F15B11/00; E02F9/20; F15B11/028
Foreign References:
| JP2016169570A | 2016-09-23 | |||
| JPH09242708A | 1997-09-16 | |||
| JP2012097890A | 2012-05-24 | |||
| JPH0441395A | 1992-02-12 | |||
| US20140033689A1 | 2014-02-06 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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