Title:
SWIRL FLOW CONTROL SYSTEM FOR CONSTRUCTION EQUIPMENT AND METHOD OF CONTROLLING THE SAME
Document Type and Number:
WIPO Patent Application WO/2012/015087
Kind Code:
A1
Abstract:
Provided are a swirl flow control system for construction equipment and a method of controlling the same. The swirl flow control system includes: an engine; a plurality of actuators and rotation motors for a working device including a boom or arm and a bucket; a plurality of variable capacity type hydraulic pumps connected to the engine to provide an oil pressure into the actuators and rotation motors for the working device; a manipulation part including a manipulation lever and a joystick, the manipulation part controlling the movements of the plurality of actuators; a control valve respectively supplying the flows within the hydraulic pumps into the actuators and rotation motors by means of the manipulation part; a working device position detection unit disposed on a side of each of the actuators to detect a relative position of the actuator; a manipulation level detection unit disposed on a side of the manipulation part to detect a manipulated level of the manipulation lever or joystick; and a flow controller including a flow restriction part that receives signals from a flow setting part, the working device position detection unit, and an engine speed sensor to calculate a rate of increase for the flow, to thereby compensate for a swirl required flow rate and an output unit for providing a control signal into a swash plate control device, wherein the flow controller receives the signal detected by the manipulation level detection unit (9) to control a discharge flow rate for each of the hydraulic pumps.
Inventors:
KIM, Dong-Soo (1 Posco The Sharp Apt. Gyeonghwa-dong, Jinhae-si, Gyeongsangnam-do 645-752, 645-752, KR)
Application Number:
KR2010/005013
Publication Date:
February 02, 2012
Filing Date:
July 30, 2010
Export Citation:
Assignee:
VOLVO CONSTRUCTION EQUIPMENT AB (SE Eskilstuna, 631 85, SE)
볼보 컨스트럭션 이큅먼트 에이비 (스웨덴 에스킬스투나, Eskilstuna, 631 85, SE)
볼보 컨스트럭션 이큅먼트 에이비 (스웨덴 에스킬스투나, Eskilstuna, 631 85, SE)
International Classes:
F15B9/08; E02F9/22; F15B13/043
Attorney, Agent or Firm:
YOON, Eui-Seoup (17th Floor, UNIK Bldg. 706-13Yeoksam-dong, Gangnam-gu, Seoul 135-080, 135-080, KR)
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Claims:
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