• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A control valve for booster power steering has a back pressure check valve openable by pressure caused by wheel jolting, which check valve connects between a servopump pressure passage of the control valve through the inner bore of a valve sleeve operable within a housing bore to the inlet of a metering pump. Such valve ensures that the steering is "closed" under all circumstances including during steering to prevent pressure jolts being transmitted from the vehicle wheels due to road roughness. However, after completion of a steering operation high pressure can build up within the valve sleeve causing expansion of the valve sleeve and jamming within the housing bore, making operation difficult. Accordingly, a pressure limiting valve is provided connected to relieve the pressure within the valve sleeve bore.
    公开号:SU1181561A3
    申请号:SU813318202
    申请日:1981-08-12
    公开日:1985-09-23
    发明作者:Тишер Вернер；Либерт Кари-Хайнц；Фасбендер Рольф
    申请人:Цанрадфабрик Фридрихсхафен Аг (Фирма)；
    IPC主号:
    专利说明:

    I.11 The invention relates to. surround hydraulic drives and can be used in steering cars. The purpose of the invention is to prevent the spool from closing. The drawing shows the structural diagram of the device. The hydrostatic control device, for example, for automobiles, contains pressure 1 and drain 2 channels, control body 3 and the measuring engine 5 connected to it through the tracking device 4, which is connected in series with the executive engine 6, the tracking device 4 is connected with the spool 7, installed with the possibility of reciprocating movement, for communicating in neutral position the central branch 8 of the discharge channel with drain channel 2, and in the extreme positions for separating these channels and communicating and channels 9 of the measuring engine 5 and channels 10, And the executive engine 6, depending on the direction of movement, of the control body 3, the spool 7 being hollow, and its internal cavity 12, as well as the measuring 5 and the executive b motors communicating with the pressure channel 1 through the working channel 13, in which a check valve 14 is installed, open in the direction of flow to the measuring motor 5. Parallel to the check valve 14, a safety valve 15 is installed with the possibility of opening in the opposite direction, which on the spring 16 side, communicates with the central branch 8 of the pressure channel 1, and on the side opposite to the spring 16, with the internal cavity 12 of the spool 7, which is connected to the thrust of the 1M canopy 1. Control body 3 is connected to the measuring engine 5 by the propeller shaft 17 with clips. 18. and 19. In the measuring engine 5 between the lid 20 and the intermediate ring 21 of the housing 22 there is a gear ring 23 with internal teeth, connected with screws 24 having a gear less than one gear ring 23, an external gear the teeth form with the teeth the rings 23, the lid 20 and the propellant ring 21 pushing cells 26, which by channels 27 in the ring 21 communicate with the channels 9 in the housing 22. The channels 9 by channels 28 and 29 are connected to the hole 30 in which the gold 7 is installed On the surface of the hole 30 is made a groove 31 is common and with the pressure channel, the grooves 32 and 33 connected to the slip channel 2, and the grooves 34 and 35 connected to the channels 10 and 11 of the executive engine 6. On the surface i of the spool 7 there are grooves 36 and 37 for communication in the neutral position of branch 8 with a drain channel 2, as well as two systems of longitudinal grooves 38 and 39 uniformly distributed around the circumference. The working channel 13 is connected to the internal cavity 12 of the valve 7 and to the safety valve 15 through the end cavity 40. The hydrostatic control device operates as follows. The rotation of the control member 3 causes the rotation and axial displacement of the spool 7, as well as the rotation of the gear wheel 25. As a result of the displacement of the spool 7, the groove 31 is uncoupled with the grooves 32 and 33, and the liquid from the pressure channel 1 flows through the check valve 14 into the end cavity 40 and inner cavity 12 of spool 7. One of two systems of longitudinal grooves, for example 39, connects channels 9 through channel 29 and groove 35 with channel 11 of the executive engine, and the second system of grooves 38 - surfaces of bore 30 between channels 28 with pressure channel 1, prevents leaks from channels 28. The working fluid from pressure cells 26 through channel 27 enters channel 11, and from channel 10 through communicating grooves 34 and 32 - into drain channel 2. If the load on the executive engine 6 is higher than the pressure in the end cavity 40 pressure setting of the safety valve 15, the latter is triggered, eliminating the possibility of the jamming of the spool 7 under operation, the pressure in its internal cavity 12. The check valve 14 eliminates the reverse effect of the load on the control body 3. 19 n 25 Z4
    权利要求:
    Claims (1)
    [1]
    HYDROSTATIC CONTROL DEVICE, for example, for cars, containing a pressure and drain channels, a control body and a measuring motor connected to it via a follower, which is connected in series with an executive motor, the follower is connected to a spool installed with the possibility reciprocating movement, for communication in the neutral position of the Central branch of the pressure channel with a drain, and in extreme positions - for. uncoupling of these channels and messages of the channels of the measuring and actuating motors. lei depending on the direction of movement of the control organza, with a spool. made hollow and its internal cavity, as well as the measuring motor, are connected to the pressure channel through the working channel in which the check valve is installed, for supplying a flow to the measuring motor, characterized in that, in order to prevent the valve from jamming, it is installed parallel to the check valve with the opening in the direction opposite to the opposite, a spring-loaded safety valve, which is connected from the spring side to the central branch of the pressure channel, and from the side opposite to the spring , - with the internal cavity of the spool, which is connected with the pressure channel.
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    类似技术:
    公开号 | 公开日 | 专利标题
    US2916879A|1959-12-15|Combination hydraulic power unit
    GB1396439A|1975-06-04|Hydraulic steering limitation means for hydrostatic steering installations more particularly for motor vehicles
    US5070958A|1991-12-10|Variable effort steering gear
    US4485883A|1984-12-04|Power steering system with vehicle speed-sensitive flow
    SU1181561A3|1985-09-23|Hydrostatic control device
    GB1387495A|1975-03-19|Power-assisted steering system for motor vehicles
    GB1598848A|1981-09-23|Power-assisted steering system for motor vehicles
    GB1237282A|1971-06-30|Improvements in or relating to power steering systems
    US3367354A|1968-02-06|Valve
    US4418779A|1983-12-06|Control apparatus for vehicle steering system
    SU695544A3|1979-10-30|Hydraulic booster for a steering system of a vehicle
    GB808202A|1959-01-28|Improvements in or relating to manually and power operated steering mechanism for motor vehicles
    GB1400108A|1975-07-16|Hydraulic rotary-piston pump or motor particularly forhydrostatic steering devices in motor vehicles
    US4142448A|1979-03-06|Rack and pinion power steering gear
    US3446021A|1969-05-27|Power steering unit with poppet directional control valves
    SU663286A3|1979-05-15|Vehicle hydraulic steering booster
    US3563033A|1971-02-16|Fluid system charging valve
    GB926831A|1963-05-22|Improvements in or relating to power-assisted steering systems particularly for motor vehicles
    US3954149A|1976-05-04|Hydraulic pressure fluid control system for controlling the displacements of a double-acting servo-motor
    US6058826A|2000-05-09|Power steering cylinder assembly
    US3002501A|1961-10-03|Remote control hydraulic system with emergency manual control
    SU745378A3|1980-06-30|Momentum hydroamplifier
    US4489755A|1984-12-25|Power assisted steering gear
    US3844368A|1974-10-29|Hydraulic drive system
    RU2026225C1|1995-01-09|Positive displacement steering gear
    同族专利:
    公开号 | 公开日
    US4495769A|1985-01-29|
    FR2488848A1|1982-02-26|
    DE3031230A1|1982-02-25|
    GB2083421B|1984-07-04|
    DK150936C|1988-03-07|
    DK363981A|1982-02-20|
    GB2083421A|1982-03-24|
    DK150936B|1987-09-28|
    DE3031230C2|1986-03-13|
    FR2488848B1|1988-01-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2471966C1|2011-06-24|2013-01-10|Олег Сергеевич Николаев|Well cleaning and operation device|US3249173A|1963-12-20|1966-05-03|Clark Equipment Co|Power steering system|
    US3587235A|1969-06-02|1971-06-28|Trw Inc|Regenerative hydrostatic steering system|
    DE2062256C3|1970-12-17|1980-07-17|Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen|Hydraulic power steering device for motor vehicles|
    DE2240012C3|1972-08-14|1983-11-03|Danfoss A/S, 6430 Nordborg|Control device for hydrostatic power steering or the like.|
    DE2253575C3|1972-11-02|1975-04-24|Danfoss A/S, Nordborg |Hydraulic control devices for steering systems, in particular for vehicle steering systems|
    US4165761A|1976-07-27|1979-08-28|Tadeusz Budzich|Load responsive fluid control valves|
    DE2904111C2|1979-02-03|1983-03-31|Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen|Hydrostatic steering device|DD250510B5|1984-04-24|1994-03-31|Hydraulik Nord Gmbh|HYDROSTATIC STEERING DEVICE|
    US5072585A|1988-01-20|1991-12-17|Zahnradfabrik Friedrichshafen, Ag|Hydrostatic auxiliary-power steering device|
    US4804016A|1988-06-09|1989-02-14|Eaton Corporation|Fluid controller with improved pressure balancing|
    DE4028129A1|1989-09-08|1991-03-21|Zahnradfabrik Friedrichshafen|hydrostatic servo steering for vehicle - with control flow through aperture and main oil flow directly through proportioner|
    CN100368247C|2006-03-27|2008-02-13|镇江液压件厂有限责任公司|Geluote energy saving high efficiency hydraulic deflector|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3031230A|DE3031230C2|1980-08-19|1980-08-19|Hydrostatic power steering device|
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