发明名称 |
Steuervorrichtung für einen hydraulischen Motor |
摘要 |
A control arrangement for a hydraulic motor (1) is, at least in one working direction, loadable by an external load (2). It has a control valve (3) with an inflow control throttle (5) and a return control throttle (7). The control valve (3) is part of a pressure control, in which the motor inflow pressure (PA) is substantially determined by the control valve (3). Further, there is a load retaining valve (14) in the return path (8), which opens in dependence of the difference between the motor inflow pressure (PA) and a reference pressure (PR), which can be picked off between the load retaining valve (14) and the return control throttle (7). A compensation valve (13) maintains a constant pressure drop at an adjustable throttle arranged in the return path (8). This gives a control arrangement, which is to a high degree load independent during lowering and stable towards oscillations.
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申请公布号 |
DE19800721(A1) |
申请公布日期 |
1999.07.15 |
申请号 |
DE19981000721 |
申请日期 |
1998.01.12 |
申请人 |
DANFOSS A/S, NORDBORG, DK |
发明人 |
THOMSEN, SVEND ERIK, NORDBORG, DK;BUHL, JAN MEIBOELL, SOENDERBORG, DK |
分类号 |
B66C13/18;B66F9/22;E02F9/22;F15B11/00;F15B11/042;F15B11/044;F15B11/05;F15B13/01;(IPC1-7):F15B11/04;F15B13/04;B66C13/20;E02F3/42 |
主分类号 |
B66C13/18 |
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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