公开(公告)号：EP0513360A1

公开(公告)日：1992-11-19

申请号：EP91916806.2

申请日：1991-09-26

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： AKIYAMA, Teruo, c/o Kawasaki Factory ,  ISHIZAKI, Naoki, c/o Kawasaki Factory ,  SHIRAI,Kiyoshi, c/o Kawasaki Factory ,  YAMASHITA, Koji, c/o Kawasaki Factory ,  SHINOZAKI, Shin-ichi, c/o Kawasaki Factory

IPC分类号： F15B11/00 ,  F15B11/16 ,  F15B11/05

CPC分类号： E02F9/2225 ,  E02F9/2232 ,  E02F9/2296 ,  F15B11/165 ,  F15B2211/20553 ,  F15B2211/20592 ,  F15B2211/40515 ,  F15B2211/40569 ,  F15B2211/413 ,  F15B2211/455 ,  F15B2211/6052 ,  F15B2211/6054 ,  F15B2211/6058 ,  F15B2211/6355 ,  F15B2211/71

摘要： A hydraulic circuit system capable of making the rise of the driving pressure slow and of preventing the hunting phenomenon even at the start of driving of a hydraulic actuator being high in inertia. The system comprises: a plurality of control valves (15) provided in a discharge piping (10a) of a hydraulic pump (10); and pressure compensating valves (18) respectively provided in pipings for connecting these control valves (15) to respective hydraulic actuators (16); wherein the respective pressure compensating valves (18) are set at the highest load pressure out of respective load pressures of the respective hydraulic actuators (16), and a pump discharge capacity is controlled by a change-over valve (14) actuated by the difference between a pump discharge pressure and a load pressure. A bypass piping (31) connected to a load pressure introducing path (30) for introducing the load pressure into the pressure receiving portion of the aforesaid change-over valve (14) is included, and this bypass piping (31) is connected to a tank through a bypass valve (32) being throttled in the inverse proportion to a change in the opening area of the control valve (15).

摘要翻译： 能够使驱动压力上升缓慢的液压回路系统，即使是开始驱动惯性高的液压致动器，也能够防止振动现象。 该系统包括：设置在液压泵（10）的排放管道（10a）中的多个控制阀（15）; 和分别设置在管道中的压力补偿阀（18），用于将这些控制阀（15）连接到相应的液压致动器（16）; 其中相应的压力补偿阀（18）在相应的液压致动器（16）的各自的负载压力之下设定在最高负载压力，并且泵排出能力由通过差异致动的转换阀（14）来控制 在泵排出压力和负载压力之间。 包括连接到用于将负载压力引入上述转换阀（14）的压力接收部分的负载压力引入路径（30）的旁通管道（31），并且该旁通管道（31）连接到 通过旁通阀（32）以与控制阀（15）的开口面积的变化成反比的方式节流。