Title:
WORK MACHINERY
Document Type and Number:
WIPO Patent Application WO/2019/053814
Kind Code:
A1
Abstract:
A controller (40) for a hydraulic shovel is provided with: a first speed arithmetic logic unit (43f) that computes a first speed for an arm cylinder (6) from the detection value of a manipulation amount detection device (52a); a second speed arithmetic logic unit (43d) that computes a second speed for the arm cylinder (6) from the detection value of an orientation detection device (50); and a third speed arithmetic logic unit (43e) that computes a third speed to be used as the arm cylinder (6) speed by an actuator control unit (81) executing machine control. The third speed arithmetic logic unit computes the third speed to be the first speed during the interval from when the manipulation amount detection device detects that an operation on an arm (9) has been input to a prescribed time t0, computes the third speed to be the speed computed from the first speed and the second speed during the interval from the prescribed time t0 to a prescribed time t1, and computes the third speed to be the second speed after the prescribed time t1.
More Like This:
Inventors:
ITO MASAMICHI (JP)
NAKANO HISAMI (JP)
SUZUKI YUSUKE (JP)
NARAZAKI AKIHIRO (JP)
IGARASHI TERUKI (JP)
NAKANO HISAMI (JP)
SUZUKI YUSUKE (JP)
NARAZAKI AKIHIRO (JP)
IGARASHI TERUKI (JP)
Application Number:
PCT/JP2017/033077
Publication Date:
March 21, 2019
Filing Date:
September 13, 2017
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F9/20; E02F3/43
Foreign References:
| JP5865510B2 | 2016-02-17 | |||
| JPH09273502A | 1997-10-21 | |||
| JPH02176023A | 1990-07-09 | |||
| JP5865510B2 | 2016-02-17 |
Other References:
See also references of EP 3683364A4
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF:
Previous Patent: DISPLAY CONTROL DEVICE, DISPLAY DEVICE, AND DISPLAY CONTROL METHOD
Next Patent: AIR CONDITIONING DEVICE
Next Patent: AIR CONDITIONING DEVICE