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Patent Searching and Data


Title:
WORK MACHINE AND METHOD FOR BRAKING WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/180262
Kind Code:
A1
Abstract:
Provided is a technique for efficiently operating a control system and operation system brakes in an autonomous driving vehicle according to the operating conditions of the autonomous driving vehicle. The present invention is provided with: a high-pressure selection valve on a flow passage that supplies hydraulic pressure to a hydraulic brake device from a standard brake valve mounted in a standard machine; and a flow passage that connects an autonomous brake control valve, to which the hydraulic pressure discharged from a hydraulic pump is supplied, and the high-pressure selection valve. In addition, the present invention is provided with: an autonomous driving control device that performs controlling for allowing autonomous driving; and an autonomous brake control device that controls the autonomous brake control valve to be opened/closed in response to a brake command from the autonomous driving control device. When a brake pedal is depressed, a hydraulic oil flows from the standard brake valve to the hydraulic brake device; and when the autonomous driving control device outputs a stop command, the hydraulic oil flows from the autonomous brake control valve to the hydraulic brake device, and a braking operation is thereby performed.

Inventors:
SATO TAKAYUKI (JP)
TANAKA TAKAAKI (JP)
ISHIMOTO HIDEFUMI (JP)
Application Number:
PCT/JP2018/008429
Publication Date:
October 04, 2018
Filing Date:
March 05, 2018
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
B60T13/125; B60T7/16; B60T13/18; B60T13/68
Foreign References:
JP2004230908A2004-08-19
JP2012144255A2012-08-02
Other References:
See also references of EP 3492326A4
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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