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1. 发明专利

JPS5926602A Hydraulic circuit of cylinder 失效
标题翻译：气缸液压回路
公开(公告)号：JPS5926602A
公开(公告)日：1984-02-10
申请号：JP13567982
申请日：1982-08-05
申请人： Kawasaki Steel Corp
发明人： OKAMOTO TOKIJI
IPC分类号： F15B11/08
CPC分类号： F15B11/08
摘要： PURPOSE:To prevent an internal leak at the time of stop of the actuator by providing a shut-off valve on the primary side of the main switch valve of the solenoid hydraulic pressure switch valve and by allowing a poppet type pilot check valve to open and close the shut-off valve, said check valve being controlled simultaneously with the main switch valve by an external pilot. CONSTITUTION:The shut-off valve 12 is connected in such a manner that the inlet 12-2 is connected to the pump 4, and the outlet 12-3 to the port P of the main switch valve 3-1. When the main switch valve 3-1 is in the neutral position (cylinder stopped), pilot spools 13-7, 8, 9 are diplaced to the right by the spring 13-3, and the poppet valve 13-4 is closed. The shut-off valve 12 is closed due to the primary pressure P's being flowing into the upper part of the valve body 12-4 by closing the poppet valve 13-4. The secondary pressure of the shutoff valve is dissipated by an internal leak of the main switch valve 3-1 so that the leak is prevented owing to the fact that the valve body 12-4 is biased to close by a force equivalent to the differential of upper and lower areas of the seat multiplied by the primary pressure P.
摘要翻译：目的：为了防止在执行器停止时内部泄漏，在电磁阀液压开关阀的主开关阀的初级侧设置截止阀，并允许提升阀式先导式止回阀打开，关闭截止阀，所述止回阀通过外部导向器与主开关阀同时控制。构成：截止阀12以将入口12-2连接到泵4，将出口12-3连接到主开关阀3-1的端口P的方式连接。当主开关阀3-1处于中立位置（气缸停止）时，先导阀芯13-7,8,9由弹簧13-3向右偏置，提升阀13-4关闭。截止阀12由于主压力P通过关闭提升阀13-4而流入阀体12-4的上部而关闭。断流阀的二次压力由于主开关阀3-1的内部泄漏而消散，从而由于阀体12-4被相当于相当于座椅的上下区域乘以主压力P.

2. 发明专利

JPS5926604A Hydraulic servo valve 失效
标题翻译：液压伺服阀
公开(公告)号：JPS5926604A
公开(公告)日：1984-02-10
申请号：JP13612782
申请日：1982-08-03
申请人： Kawasaki Steel Corp
发明人： OKAMOTO TOKIJI
IPC分类号： F15B13/043 , F15B13/042
摘要： PURPOSE: To prevent the operating fluid for the pilot circuit and the main circuit from being mixed by providing pilot spools, which operate the main spool, to both sides of the main spool in the hydraulic servo valve of double stage type.
CONSTITUTION: The pilot spools 13c are provided to both sides of the main spool 13b in the valve body 13b. The pilot fluid pressure is applied to this pilot spool 13c through the pilot orifice 13d to the fluid chamber 13e of the pilot spool 13c. The pilot spool 13c is given a very small clearance from the valve body 13a. The fluid pressure which leaks out of this very small clearance is made low by means of the labyrinth effect of the clearance, and sealed by the packing 13f and drained out from the drain hole 13g.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过在主液压伺服阀的主阀芯的两侧提供主动阀芯操作，防止先导回路和主回路的工作流体混合。构成：先导阀芯13c设置在阀体13b的主阀芯13b的两侧。先导流体压力通过先导孔13d施加到先导阀芯13c到达先导阀芯13c的流体室13e。先导阀芯13c从阀体13a给出非常小的间隙。通过间隙的迷宫效应使从这个非常小的间隙泄漏的流体压力降低，并由填料13f密封并从排水孔13g排出。

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