Flow compensated restrictive orifice for overrunning load...

Details Flow compensated restrictive orifice for overrunning load... Flow compensated restrictive orifice for overrunning load...

E - Fixed Constructions

02

F

E02F 9/22 (2006.01) F15B 13/04 (2006.01)

Patent

CA 2739596

A hydraulic circuit (44, 52, 60) for an actuator 18) that has a piston (64) and piston rod (65) that will move a load in a first direction, and which can be externally loaded in an opposite direction, includes a flow compensated valve (60) between the actuator and a control valve (52). When the piston (65) in the actuator (18) is moved in the second opposite direction under the external load and the rate of flow of fluid out of the actuator (18) through the flow compensated valve (60) exceeds a selected rate, an orifice (62) is in the flow path restricts flow from the actuator (18).

La présente invention concerne un circuit hydraulique (44, 52, 60) pour un actionneur (18) pourvu dun piston (64) et dune tige de piston (65) déplaçant une charge dans une première direction et pouvant être chargé à lextérieur dans une direction opposée, comprenant une vanne (60) à compensation de flux entre lactionneur et une vanne de commande (52). Lorsque le piston (65) situé dans lactionneur (18) est déplacé dans la seconde direction opposée sous la charge externe et que la vitesse découlement de liquide sortant de lactionneur (18) traversant la vanne à compensation de flux (60) dépasse une vitesse sélectionnée, un orifice (62) placé dans la voie découlement limite lécoulement en provenance de lactionneur (18).

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