发明名称 |
VALVE APPARATUS FOR PREVENTING FALL OF WORKING MACHINE |
摘要 |
<p>A valve apparatus for preventing a fall of a working machine comprises a cylinder-side passage (20) communicating with a cylinder port (19) opened in a cylinder-side mounting surface (11), a valve body (10) having a directional control valve-side passage (18) communicating with a directional control valve port (17), a check valve (24) provided in the valve body (10) and preventing the entry of a pressure oil from the cylinder-side passage (20) into the directional control valve-side passage (18), a flow rate control valve (34) provided in the valve body (10), normally shutting off the directional control valve-side passage (18) and cylinder-side passage (20) from each other, and establishing communication between these passages on receiving an external signal, and a safety valve (44) provided in the valve body (10) and adapted to relieve a high pressure in the cylinder-side passage (20). The check valve (24), flow rate control valve (34) and safety valve (44) are provided in a common plane substantially parallel to the cylinder-side mounting surface (11).</p> |
申请公布号 |
WO9604431(A1) |
申请公布日期 |
1996.02.15 |
申请号 |
WO1995JP01545 |
申请日期 |
1995.08.03 |
申请人 |
KOMATSU LTD.;HORI, SHUJI;KARAKAMA, TADAO |
发明人 |
HORI, SHUJI;KARAKAMA, TADAO |
分类号 |
F16K31/122;E02F9/22;E02F9/24;F15B13/01;(IPC1-7):E02F9/22 |
主分类号 |
F16K31/122 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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