- 专利标题: Hydraulic steering system
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申请号: US15147358申请日: 2016-05-05
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公开(公告)号: US09744990B2公开(公告)日: 2017-08-29
- 发明人: Bendt Porskrog , Casper Mikael Olesen , Abdul Karim Rahimzai
- 申请人: Danfoss Power Solutions ApS
- 申请人地址: DK Nordborg
- 专利权人: Danfoss Power Solutions ApS
- 当前专利权人: Danfoss Power Solutions ApS
- 当前专利权人地址: DK Nordborg
- 代理机构: McCormick, Paulding & Huber LLP
- 优先权: EP15167579 20150513
- 主分类号: B62D5/06
- IPC分类号: B62D5/06 ; B62D5/07 ; B62D5/093 ; B62D5/065 ; B62D5/12 ; B62D5/18
摘要:
A hydraulic steering system 1 is described comprising a steering unit and a priority valve, said steering unit comprising a working port arrangement having two working ports, a supply port arrangement having a high pressure port and a low pressure port, a load sensing port, a main flow path having a main bleed and a metering device and being arranged between said high pressure port and said working port arrangement, an amplification flow path having an amplification bleed and being arranged between said high pressure port and said working port arrangement, said main bleed and said amplification bleed being controlled together by means of a steering handle and being closed in neutral position of said steering handle, wherein said priority valve comprises a priority outlet connected to said high pressure port of said steering unit, a valve element moveable in a priority direction to connect an inlet of said priority valve to said priority outlet, and a load sensing connection connected to said load sensing port of said steering unit, said priority outlet being connected to said load sensing connection via a priority valve bleed, a pressure at a point downstream said priority bleed acting on said valve element in said priority direction, wherein said load sensing port is connected to said low pressure port via a drain bleed being open in neutral position of said steering handle and closing upon actuation of said steering handle out of said neutral position.
公开/授权文献
- US20160332662A1 HYDRAULIC STEERING SYSTEM 公开/授权日:2016-11-17
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