发明名称 |
Device for controlling a hydraulic motor |
摘要 |
A device for controlling a hydraulic motor (10) comprises a directional valve (15) connected to a pressure fluid pump (11; 50) via a feed passage (17) and a pilot valve (19) activated safety shut-off valve (18) incorporated in the pressure fluid feed passage (17) between the pump (11; 50) and the directional valve (15) and shiftable from a normally open position to a closed position to, thereby, block the fluid communication between the pump (11; 50) and the directional valve (15) in emergency situations. A shunt valve (16) for short circuiting at least a part of the pump flow to a tank or, alternatively a displacement adjusting means (51) of a variable displacement pump (50) are activated by a load sensing pressure derived from a load sensing port (15e) on the directional valve (15), which load sensing pressure is discharged to tank (12) via the shut-off valve (18) as the latter is shifted to its closed position.
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申请公布号 |
US5469703(A) |
申请公布日期 |
1995.11.28 |
申请号 |
US19940258082 |
申请日期 |
1994.06.10 |
申请人 |
VOAC HYDRAULICS BORAS AB |
发明人 |
ERICSSON, LARS P.;NILSTAM, BO |
分类号 |
F15B11/05;F15B13/04;F15B20/00;(IPC1-7):F16D31/02 |
主分类号 |
F15B11/05 |
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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