公开(公告)号：EP0433454B1

公开(公告)日：1996-02-21

申请号：EP90907487.4

申请日：1990-05-24

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： SHIRAI, K Kaw. Fact. K.K. Komatsu Seisakusho ,  SHINOHARA, S Kaw. Fact. K.K. Komatsu Seisakusho ,  AKIYAMA, T Kaw. Fact. K.K. Komatsu Seisakusho ,  TAKIGUCHI, T Kaw. Fact. K.K. Komatsu Seisakusho ,  ISHIZAKI, N Kaw. Fact. K.K. Komatsu Seisakusho

IPC分类号： F15B11/05 ,  F15B11/16 ,  E02F9/22

CPC分类号： F15B11/165 ,  E02F9/22 ,  E02F9/2225 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/40515 ,  F15B2211/40569 ,  F15B2211/455 ,  F15B2211/50518 ,  F15B2211/5158 ,  F15B2211/55 ,  F15B2211/6054 ,  F15B2211/6057 ,  F15B2211/7052 ,  F15B2211/7058 ,  F15B2211/71

摘要： This invention relates to a hydraulic circuit apparatus which introduces a load pressure of one of a plurality of hydraulic actuators and thus improves temporarily the function of one pressure compensation valve in order to prevent the load pressure of one hydraulic actuator at the start from becoming abnormally high and to prevent relief of the pressure oil from a safety valve when a plurality of hydraulic actuators are operated simultaneously, supplies large quantities of pressure oil to the actuator connected to this pressure compensation valve and improves its operation speed. This hydraulic circuit apparatus is equipped with a compensation pressure change-over valve (26) for supplying normally the highest load pressure to a spring chamber (9a, 10a) side of each pressure compensation valve (9, 10) and for supplying the load pressure of each hydraulic actuator (5 ∩ 6) connected to each pressure compensation valve to the spring chamber side of each pressure compensation valve when either one of the operation valves (3 or 4) is changed over at a full stroke.

公开(公告)号：EP0433454A1

公开(公告)日：1991-06-26

申请号：EP90907487.4

申请日：1990-05-24

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： SHIRAI, K Kaw. Fact. K.K. Komatsu Seisakusho ,  SHINOHARA, S Kaw. Fact. K.K. Komatsu Seisakusho ,  AKIYAMA, T Kaw. Fact. K.K. Komatsu Seisakusho ,  TAKIGUCHI, T Kaw. Fact. K.K. Komatsu Seisakusho ,  ISHIZAKI, N Kaw. Fact. K.K. Komatsu Seisakusho

IPC分类号： F15B11/05 ,  F15B11/16 ,  E02F9/22

CPC分类号： F15B11/165 ,  E02F9/22 ,  E02F9/2225 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/40515 ,  F15B2211/40569 ,  F15B2211/455 ,  F15B2211/50518 ,  F15B2211/5158 ,  F15B2211/55 ,  F15B2211/6054 ,  F15B2211/6057 ,  F15B2211/7052 ,  F15B2211/7058 ,  F15B2211/71

摘要： This invention relates to a hydraulic circuit apparatus which introduces a load pressure of one of a plurality of hydraulic actuators and thus improves temporarily the function of one pressure compensation valve in order to prevent the load pressure of one hydraulic actuator at the start from becoming abnormally high and to prevent relief of the pressure oil from a safety valve when a plurality of hydraulic actuators are operated simultaneously, supplies large quantities of pressure oil to the actuator connected to this pressure compensation valve and improves its operation speed. This hydraulic circuit apparatus is equipped with a compensation pressure change-over valve (26) for supplying normally the highest load pressure to a spring chamber (9a, 10a) side of each pressure compensation valve (9, 10) and for supplying the load pressure of each hydraulic actuator (5 ∼ 6) connected to each pressure compensation valve to the spring chamber side of each pressure compensation valve when either one of the operation valves (3 or 4) is changed over at a full stroke.

摘要翻译： 本发明涉及一种引入多个液压致动器中的一个的负载压力的液压回路装置，从而临时改善一个压力补偿阀的功能，以防止一个液压致动器在开始时的负载压力变得异常高 并且为了在同时操作多个液压致动器时防止来自安全阀的压力油的泄压，向与该压力补偿阀连接的致动器供给大量的压力油并提高其运行速度。 该液压回路装置配备有用于向每个压力补偿阀（9,10）的弹簧室（9a，10a）侧通常提供最高负载压力的补偿压力转换阀（26），并且用于提供负载压力 每个压力补偿阀连接到每个压力补偿阀的弹簧室侧的每个液压致动器（5类6），当任何一个操作阀（3或4）全冲程转换时。