发明申请
- 专利标题: Force feedback poppet valve having an integrated pressure compensator
- 专利标题(中): 强制反馈提升阀具有集成的压力补偿器
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申请号: US11806382申请日: 2007-05-31
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公开(公告)号: US20080295508A1公开(公告)日: 2008-12-04
- 发明人: Pengfel Ma , Philippe Georges Vande Kerckhove
- 申请人: Pengfel Ma , Philippe Georges Vande Kerckhove
- 专利权人: Caterpillar Inc.,Shin Caterpillar Mitsubishi Ltd
- 当前专利权人: Caterpillar Inc.,Shin Caterpillar Mitsubishi Ltd
- 主分类号: F16D31/02
- IPC分类号: F16D31/02
摘要:
The force feedback poppet valve includes a valve body having a main chamber, a first port, and a second port. The force feedback poppet valve further includes a main poppet disposed within the main chamber and movable between an open position and a closed position to control fluid flow between the first port and the second port. The main poppet forms a control chamber within the main chamber. The force feedback poppet valve further includes a first passage communicating the control chamber with the second port, a second passage communicating the control chamber with the first port, and a pilot valve having a pilot poppet for controlling fluid flow between the control chamber and the first port through the second passage. The force feedback poppet valve further includes a pressure compensator disposed within the main poppet, and fluidly connected to the second port via the first passage. The force feedback poppet valve further includes a first spring coupled between the main poppet and the pilot poppet to provide a force proportional to a distance between the main poppet and the pilot poppet, and a second spring coupled between the pressure compensator and the pilot poppet to provide a force proportional to a distance between the pressure compensator and the pilot poppet.
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