Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/179346
Kind Code:
A1
Abstract:
A controller is provided to a hydraulic shovel, the controller: computing, on the basis of the position of a preset work region and the orientation of an upper turning body and a work machine, a target turning stop angle θstop for stopping the turning of the upper turning body before the upper turning body and the work machine deviate from a work region; and outputting a turning stop command for stopping the upper turning body during turning at the target turning stop angle. The controller: predicts the operation of the upper turning body and the work machine during a braking period on the basis of the turning angular velocity of the upper turning body and the orientation of the work machine, and thereby computes a predicted turning braking angle θpre, which is the angle at which the upper turning body turns during the braking period; corrects the target turning stop angle θstop on the basis of the results of the prediction of the operation of the work machine during the braking period; and outputs a turning stop command at a timing determined on the basis of the predicted turning braking angle and the corrected target turning stop angle.
Inventors:
NARIKAWA RYU (JP)
SAKAMOTO HIROSHI (JP)
MORIKI HIDEKAZU (JP)
SAKAMOTO HIROSHI (JP)
MORIKI HIDEKAZU (JP)
Application Number:
PCT/JP2020/004512
Publication Date:
September 10, 2020
Filing Date:
February 06, 2020
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F3/43; E02F9/20; E02F9/26
Domestic Patent References:
| WO2014123228A1 | 2014-08-14 |
Foreign References:
| JP2017096006A | 2017-06-01 | |||
| JP2011052383A | 2011-03-17 | |||
| JP2010247968A | 2010-11-04 | |||
| JP2005330034A | 2005-12-02 | |||
| JP2010095906A | 2010-04-30 | |||
| JP2013189767A | 2013-09-26 | |||
| JP2011063407A | 2011-03-31 |
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF: