发明授权
- 专利标题: Apparatus for adjusting the position of an adjustable element
- 专利标题(中): 用于调节可调元件位置的装置
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申请号: US347071申请日: 1982-02-08
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公开(公告)号: US4510847A公开(公告)日: 1985-04-16
- 发明人: Norbert Mucheyer , Wolfgang Kauss
- 申请人: Norbert Mucheyer , Wolfgang Kauss
- 申请人地址: DEX Lohr
- 专利权人: Mannesman Rexroth GmbH
- 当前专利权人: Mannesman Rexroth GmbH
- 当前专利权人地址: DEX Lohr
- 优先权: DEX3106086 19810219
- 主分类号: F15B9/08
- IPC分类号: F15B9/08 ; F15B11/08
摘要:
A device for the positioning of an adjustment element dependent upon a desired level and the actual level, particularly for the adjustment of a hoist gear train of a tractor, a combine or the like, has an operating circuit 10, which has a multi-way valve 3 pressure-operated in two directions, and a control circuit 29 for the operation of the multi-way valve, connected to a pressure source 19, which is connected to two control devices 11, 12 of the multi-way valve. Circuit 29 has two adjustable series-connected throttles 22, 24, connected to one of the two control devices. The first throttle 24 is also connected to a tank 7 and the second throttle 22 is also connected to pressure source 19. Both throttles have the same maximum flow-through cross section, and are adjustable in the same manner. Third and fourth throttles 27, 28 are provided, one being between the pressure source and control device 11, and the other between the control device and tank 7. The third and fourth throttles 27, 28 are each adjustable throttles, so that both control devices of the multi-way valve can be influenced as desired. The throttles are mounted in series and have the same flow-through cross section and are adjustable in the same manner. The maximum flow-through cross section of the third and fourth throttles is selected in the same manner as the flow-through cross section of the first and second throttles.
公开/授权文献
- US4922284A Film printing/reading system 公开/授权日:1990-05-01
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