Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/255970
Kind Code:
A1
Abstract:
A hydraulic excavator according to the present invention comprises: a work device having a plurality of front members, including a bucket; and a controller capable of controlling the work device by using excavation assistance control whereby the work device is controlled so that the bucket moves along a prescribed target excavation surface, and deviation prevention control whereby the operation of a front member, from among the plurality of front members, that is capable of causing the work device to deviate from the prescribed work area is slowed or stopped to prevent deviation of the work machine from the work area. When controlling the work device using both excavation assistance control and deviation prevention control, the controller controls the work device such that the operation direction of the bucket approaches what the operation direction of the bucket would be if the work machine were controlled using only excavation assistance control.
More Like This:
Inventors:
NARIKAWA RYU (JP)
MORIKI HIDEKAZU (JP)
SAKAMOTO HIROSHI (JP)
TANAKA HIROAKI (JP)
MORIKI HIDEKAZU (JP)
SAKAMOTO HIROSHI (JP)
TANAKA HIROAKI (JP)
Application Number:
PCT/JP2020/023628
Publication Date:
December 24, 2020
Filing Date:
June 16, 2020
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F3/43; E02F9/20
Domestic Patent References:
| WO2017168686A1 | 2017-10-05 | |||
| WO2015181990A1 | 2015-12-03 | |||
| WO2014167718A1 | 2014-10-16 |
Foreign References:
| JP2017226972A | 2017-12-28 | |||
| JPH05321290A | 1993-12-07 |
Other References:
See also references of EP 3988718A4
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF: