发明名称 |
ARRANGEMENT FOR CONTROLLING SUPPLY OF PRESSURE INTO HYDRAULIC CYLINDERS OF UNITS OF POWER SUPPORTS |
摘要 |
<p>The invention relates to a method for the simultaneous actuation of a plurality of hydraulic consumers by means of intrinsically-safe electro-hydraulic valves. The consumers are connected by hydraulic directional control valves to a pressure line and/or a return line. These hydraulic directional control valves can be connected in a predetermined manner, via pre-control valves to a control line. The pre-control valves are pressureless, and possess electro-magnets with a current consumption of less than 50 milliamps. By connection of a series-connected electro-hydraulic directional control valve means, the pre-control valves are connected to the control line, and at the same time are hydraulically locked.</p> |
申请公布号 |
SU1597114(A3) |
申请公布日期 |
1990.09.30 |
申请号 |
SU19864028027 |
申请日期 |
1986.08.27 |
申请人 |
GEWERK EISENHUETTE WESTFALIA |
发明人 |
VILLI KUSSEL,DE;MIKHAEL DETTMERS,DE;VALTER VAJRIKH,DE |
分类号 |
E21D23/16;F15B11/22;F15B21/08 |
主分类号 |
E21D23/16 |
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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