CONTROL VALVE FLUID SYSTEM CONSTRUCTION MACHINE AND DRIVING CONTROL METHOD FOR ACTUATOR

• Main Authors: IWASAKI HITOSHI, MASATANI RYOMA, SHIGAKI TOMIO
• Format: Patent
• Language: English; Korean
• Published: 22.04.2022
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DEVICES FOR VENTING OR AERATING; DREDGING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; FOUNDATIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULIC ENGINEERING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SOIL SHIFTING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

An independent metering valve (2) of an embodiment includes a spool (5) as a first meter, a spool (6) as a second meter, and a bridge passage (30). The spool (5), which is the first meter, has a passage (11), which is the first meter and communicates with a first pump (110A). The spool (6), which is the second meter, has a passage (12), which is the second meter and communicates with a second pump (110B). The bridge passage (30) communicates with the passage (11) as the first meter and the passage (12) as the second meter and communicates with the respective ports (Hp, Rp) of a hydraulic actuator (111). The present invention provides a control valve, a fluid system, a construction machine, and a driving control method for an actuator, capable of adjusting the flow rate of a fluid supplied to the actuator with high performance. 실시 형태의 독립 미터링 밸브(2)는, 제1 미터인 스풀(5)과, 제2 미터인 스풀(6)과, 브리지 유로(30)를 구비한다. 제1 미터인 스풀(5)은, 제1 펌프(110A)에 통하는 제1 미터인 유로(11)를 갖는다. 제2 미터인 스풀(6)은, 제2 펌프(110B)에 통하는 제2 미터인 유로(12)를 갖는다. 브리지 유로(30)는, 제1 미터인 유로(11) 및 제2 미터인 유로(12)에 통함과 함께, 유압 액추에이터(111)의 각 포트(Hp, Rp)에 통한다.