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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/044099
Kind Code:
A system for controlling a construction machine comprises: a hydraulic pump; a first and a second actuator connected to the hydraulic pump through a first and a second parallel line, respectively; a first and a second control valve for controlling operations of the first and the second actuator, respectively, depending on the displacement amount of spools provided therein; a first and a second spool displacement adjusting valve for supplying respective spools of the first and the second control valve with a pilot signal pressure for controlling a displacement amount of the spools depending on an input control signal; and a control unit for outputting the control signal to the first and the second spool displacement adjusting valve in response to a manipulation signal of an operator and performing a control such that, when a manipulation signal for a complex operation of the first and the second actuator is received, the displacement amount of the spool in the second control valve according to a manipulation signal for the second actuator is limited depending on a manipulation signal of the first actuator.

KIM, Chang-mook (26 Sujeong-ro 342beon-gil, Sujeong-guSeongnam-si, Gyeonggi-do, 13128, KR)
JUNG, Woo-yong (1024-104, 400 Mokdongseo-ro,Yangcheon-gu, Seoul, 08090, KR)
AHN, Hyeon-sik (317-2201, 62 Jamsil-ro,Songpa-gu, Seoul, 05555, KR)
KIM, Ki-yong (110 332, Eonju-roGangnam-gu, Seoul, 06216, KR)
Application Number:
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
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DOOSAN INFRACORE CO., LTD. (489 Injung-ro, Dong-gu, Incheon, 22502, KR)
International Classes:
E02F9/22; E02F9/20; F15B13/02
Attorney, Agent or Firm:
PARK, Pil-jin et al. (5F. Seil Building, 414 Nonhyeon-ro,Gangnam-gu, Seoul, 06224, KR)
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