Control apparatus for construction machine

Details Control apparatus for construction machine Control apparatus for construction machine

E - Fixed Constructions

02

F

E02F 3/43 (2006.01) E02F 3/32 (2006.01) E02F 9/12 (2006.01) E02F 9/20 (2006.01) E02F 9/22 (2006.01)

Patent

CA 2239134

-35- The present invention relates to a control apparatus for a construction machine such as a hydraulic shovel, and the control apparatus for a construction machine includes a revolving operation member for operating a construction machine revolving unit (14), a fluid pressure pump (2) and an accumulator (5) for accumulating working oil from the fluid pressure pump (2), a fluid pressure actuator (7) for driving the construction machine revolving unit (14) to revolve with the working oil from the fluid pressure pump (2) and the accumulator (5), a first control valve (8) interposed between the fluid pressure actuator (7) and the fluid pressure pump (2), a second control valve (11) for controlling an inflow condition of the fluid from the fluid pressure actuator (7) into the accumulator (5), and control means (9) including first valve control means (9a) for controlling the first control valve (8) and second valve control means (9b) for controlling the second control valve (11).

L'invention concerne un dispositif de commande destiné à un engin de construction tel que des excavateurs hydrauliques, comportant un élément de fonctionnement à révolution destiné à actionner une partie rotative (14) d'un engin de construction, une pompe hydraulique (2), un accumulateur (5) destiné à stocker un fluide de travail provenant de la pompe hydraulique (2), un organe d'actionnement hydraulique (7) destiné à entraîner de façon rotative la partie rotative (14) de l'engin de construction au moyen du fluide de travail provenant de la pompe hydraulique (2) et de l'accumulateur (5), une première vanne de régulation (8) installée entre l'organe d'actionnement hydraulique (7) et la pompe hydraulique (2), une deuxième vanne de régulation (11) destinée à réguler l'état d'un fluide s'écoulant à l'intérieur de l'accumulateur (5), et provenant de l'organe d'actionnement hydraulique (7), un moyen de commande (9) comportant un moyen de commande (9a) de première vanne destiné à commander la première vanne de régulation (8), et un moyen de commande (9b) de deuxième vanne destiné à commander la deuxième vanne de régulation (11).

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