公开(公告)号：EP0386263B1

公开(公告)日：1993-11-03

申请号：EP89909618.4

申请日：1989-08-24

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： KARAKAMA, Tadao Kawasaki Factory of K.K. ,  NUNOTANI, Sadao Kawasaki Factory of K.K. ,  ISHIZAKI, Naoki Kawasaki Factory of K.K. ,  TAKANO, Toshiro Kawasaki Factory of K.K.

IPC分类号： F16K31/383

CPC分类号： F15B13/02 ,  Y10T137/87201 ,  Y10T137/87893

摘要： This invention relates to a poppet valve device which switches and operates sequentially a plurality of poppet valves by the change-over operation of a pilot valve by an electromagnetic solenoid, for example, operating upon receiving an external input signal. This poppet valve device includes first and second poppet valves (A, B) each constructed in such a manner that a poppet to permit communicating or cutting off of an inlet port (30) with or from an outlet port (31) is moved in a direction of the communicating position by a pressure on the inlet port side acting on its pressure receiving portion (32a) and in a direction of the cut-off position by the pressure acting on its back pressure chamber (38a, 38b), and a pilot valve (C) which connects the back pressure chamber of each poppet valve to a tank (2) and has a variable throttle portion controlled by an external input signal in such a manner as to make the pressures of the respective back pressure chambers different from each other when the poppet of each poppet valve is moved to the position for allowing each inlet port to communicate with each outlet port.

公开(公告)号：EP0386263A1

公开(公告)日：1990-09-12

申请号：EP89909618.4

申请日：1989-08-24

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： KARAKAMA, Tadao Kawasaki Factory of K.K. ,  NUNOTANI, Sadao Kawasaki Factory of K.K. ,  ISHIZAKI, Naoki Kawasaki Factory of K.K. ,  TAKANO, Toshiro Kawasaki Factory of K.K.

IPC分类号： F16K31/383

CPC分类号： F15B13/02 ,  Y10T137/87201 ,  Y10T137/87893

摘要： This invention relates to a poppet valve device which switches and operates sequentially a plurality of poppet valves by the change-over operation of a pilot valve by an electromagnetic solenoid, for example, operating upon receiving an external input signal. This poppet valve device includes first and second poppet valves (A, B) each constructed in such a manner that a poppet to permit communicating or cutting off of an inlet port (30) with or from an outlet port (31) is moved in a direction of the communicating position by a pressure on the inlet port side acting on its pressure receiving portion (32a) and in a direction of the cut-off position by the pressure acting on its back pressure chamber (38a, 38b), and a pilot valve (C) which connects the back pressure chamber of each poppet valve to a tank (2) and has a variable throttle portion controlled by an external input signal in such a manner as to make the pressures of the respective back pressure chambers different from each other when the poppet of each poppet valve is moved to the position for allowing each inlet port to communicate with each outlet port.

摘要翻译： 提升阀装置包括第一和第二提升阀m（A，B），每个提升阀（A，B）以这样的方式构造，使得允许与出口（31）连通或从出口端口（31）进入的入口端口（30） 通过作用在其压力接收部分（32a）上的入口侧的压力和作用在其背压室（38a，38b）上的压力在截止位置的方向上的连通位置的方向， 将每个提升阀的背压室与罐（2）连接的阀（C），并且具有由外部输入信号控制的可变节流部，以使得各背压室的压力不同于每个 另一方面，当每个提升阀的提升阀移动到允许每个入口与每个出口连通的位置时。