Title:
CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/009966
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a construction machine capable of suppressing a decrease in operability when a pressure sensor that measures the pressure of an actuator for driving a work device has malfunctioned in a case in which a closed circuit is formed between the actuator and a plurality of hydraulic pumps so as to drive the actuator. In order to achieve this purpose, a controller calculates the pseudo pressure of the actuator on the basis of the measured value of an attitude sensor when it has been determined that the actuator pressure sensor has malfunctioned, and uses the pseudo pressure in place of the measured value of the actuator pressure sensor to calculate the closed circuit switching valve front-rear differential pressure.
Inventors:
SHIMIZU JURI (JP)
OKANO HAJIME (JP)
HIRAKU KENJI (JP)
OKANO HAJIME (JP)
HIRAKU KENJI (JP)
Application Number:
PCT/JP2023/024679
Publication Date:
January 11, 2024
Filing Date:
July 03, 2023
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
F15B20/00; E02F9/22; F15B11/08
Foreign References:
| JP2015203453A | 2015-11-16 | |||
| JP2017002981A | 2017-01-05 | |||
| JP2021021427A | 2021-02-18 |
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF:
Previous Patent: HEATING COOKER
Next Patent: DECODING DEVICE, ENCODING DEVICE, DECODING METHOD, AND ENCODING METHOD
Next Patent: DECODING DEVICE, ENCODING DEVICE, DECODING METHOD, AND ENCODING METHOD