• 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:
    The invention makes it possible to increase the reliability of the control system of the hydraulic jack behind the position of the piston (P) in the cylinder. A piston with a one-way rod is placed in the housing (K) with the formation of working cavities. The device for controlling the position P includes the contactless sensing elements (E) located along one generator K, which are connected with the control apparatus. In K, through the course of stroke P, through holes are made, in each of which E is placed, installed by the detecting organ inside K. Each E is provided with a sealing E placed between E and K. K. Sensitive E is designed as an inductive converter. The holes are made on several generators K. 2 Cp f-crystals, 2 ill.
    公开号:SU1722242A3
    申请号:SU884355641
    申请日:1988-05-06
    公开日:1992-03-23
    发明作者:Ален Гратцмюллер Клод
    申请人:Ален Гратцмюллер Клод；
    IPC主号:
    专利说明:

    This invention relates to hydraulic jacks with a piston position monitoring system.
    The purpose of the invention is to increase the reliability of monitoring the position of the piston.
    FIG. 1 shows a differential hydraulic jack; in fig. 2 is a section A-A in FIG. one,
    The hydraulic jack comprises a housing 1, preferably in the form of a molded part, a piston 2 without a stuffing box, a rod 3 which is connected to a moving contact of a switch (not shown), and a valve 4 for closing the inlet 5 of the jack inlet and outlet in the lower end of the stroke of the piston 2 (the position shown in the right half of Fig. 1).
    The piston 2 forms in the housing 1 working cavities 6.7. In housing 1, a plurality of through holes 8-10 are made at several stroke levels of piston 2.
    In each of the holes 8-10 placed a sensitive element 11, detecting
    the body 12 of which extends into the working cavities 6, 7 of the housing 1. The sealing elements 13, for example gaskets, provide hermetic closure of the openings 8-10 for high pressure in the housing 1 of the jack after the installation of the elements 11.
    The electrical output 14 of each element 11 is connected to an apparatus 15 for monitoring and / or recording and / or visualizing the movement of a piston 2 and, possibly, velocity graphs.
    Holes 8-10 come out in the working cavity 6.7 of housing 1, which violates the integrity of this surface. But since the piston 2 does not have an omentum which is hermetically adjacent to the inner surface of the housing 1, the heterogeneity of this surface does not matter.
    Hydraulic jack works as follows.
    When supplying the working medium under pressure to one of the cavities 6, 7, the piston 2 with the rod 3 moves in the housing 1. When the piston 2 passes through any of the senses (L
    WITH
    h | Yu O Oh
    N
    Yu

    00
    body elements 11 last signal to the control unit 15, allowing reliable control over the position of the piston 2 in the housing 1.
    权利要求:
    Claims (3)
    [1]
    Claim 1. A hydraulic jack with a piston position monitoring system, comprising a housing, a piston with a one-way rod, housed in the housing with formation of working cavities, and a device for monitoring the piston position, including positioning on the housing non-contact sensitive elements associated with the control device, different so that, in order to increase the reliability of monitoring the position of the pist0
    five
    n in the cylinder, through the piston stroke through holes are made, each of which houses a sensing element mounted by the detecting body inside the housing, each sensing element being fitted with a sealing element placed between the sensing element and the wall of the housing in the case with a gap.
    [2]
    2. A jack according to claim 1, characterized in that the sensing element is designed as an inductive converter.
    [3]
    3.Domkrat on PP. 1 and 2, characterized in that the holes in the housing for accommodating the sensing elements are formed on several forming bodies.
    &. /
    $
    FIG. 2
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1722242A3|1992-03-23|Hydraulic jack with piston position check system
    US4385297A|1983-05-24|Arrangement for sensing proximity of a reciprocating member
    US2898088A|1959-08-04|Earth borehole logging system
    US3974690A|1976-08-17|Method of and apparatus for measuring annulus pressure in a well
    CA1094921A|1981-02-03|Piston-type hydropneumatic accumulator equipped with a gas shortage detection device
    CA2171257A1|1996-10-08|Blow-out preventer
    CA2082832A1|1993-07-01|Stuffing box leak detector
    IT1223710B|1990-09-29|VERY HIGH PRESSURE TRANSDUCER IN PARTICULAR FOR THE DETECTION OF THE PRESSURE OF A HYDRAULIC FLUID
    GB1211138A|1970-11-04|Connecting unit for the completion equipment of a producing underwater oil well
    US2968707A|1961-01-17|Control means for oil well pumps
    FR2370848A1|1978-06-09|Waterproof sealed bank strong room revolving door - has inflatable tube in space between cylindrical door and casing walling
    SU933972A1|1982-06-07|Packer of deep-well flow meter
    DE3773338D1|1991-10-31|PLUNGER SYSTEM FOR MODULATING A BRAKE PRESSURE.
    US3265152A|1966-08-09|Underwater beacon
    SU829899A1|1981-05-15|Deep-well pressure gauge
    SU1532769A1|1989-12-30|Seal for hydraulic machine
    SU687357A1|1979-09-25|Device for the detection of leaks in pipelines
    SU557209A1|1977-05-05|Hydraulic device
    SU1670396A1|1991-08-15|Hydraulic device to measure displacements
    SU1703886A1|1992-01-07|Gas spring with removable feeder
    SU954966A1|1982-08-30|Pressure regulator
    US3662827A|1972-05-16|Well control means
    US3201989A|1965-08-24|Differential pressure transducer
    SU787616A1|1980-12-15|Device for monitoring leaks from annular spaces of sealing units of remotely controlled oil flow apparatus
    SU1758620A1|1992-08-30|Device for fastening seismic instruments in holes
    同族专利:
    公开号 | 公开日
    JPS63295399A|1988-12-01|
    AU598362B2|1990-06-21|
    KR920004529B1|1992-06-08|
    BR8802199A|1988-12-06|
    CN1009853B|1990-10-03|
    KR880013812A|1988-12-21|
    ZA882921B|1988-10-27|
    HUT52604A|1990-07-28|
    JPH0543640B2|1993-07-02|
    FI87104C|1992-11-25|
    AU1502788A|1988-11-10|
    CN88102582A|1988-11-23|
    US5031504A|1991-07-16|
    AT54726T|1990-08-15|
    EP0290320A1|1988-11-09|
    DE3860323D1|1990-08-23|
    EP0290320B1|1990-07-18|
    CZ280407B6|1996-01-17|
    FI87104B|1992-08-14|
    FI882038A|1988-11-07|
    YU47284B|1995-01-31|
    CA1287342C|1991-08-06|
    CS303388A3|1992-04-15|
    YU88288A|1990-12-31|
    FR2614946B1|1989-06-23|
    HU209777B|1994-10-28|
    FI882038A0|1988-05-02|
    UA5569A1|1994-12-28|
    ES2016123B3|1990-10-16|
    FR2614946A1|1988-11-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR954080A|1941-07-23|1949-12-19|Const Mecaniques De La Vallee|Free-running hydraulic cylinder|
    US3717073A|1971-06-23|1973-02-20|Caterpillar Tractor Co|Proximity switch magnet control for bucket positioner|
    FR2317532B1|1975-07-07|1978-12-29|Gratzmuller Jean Louis|
    US4316145A|1976-10-01|1982-02-16|Electro-Mechanical Products|Fluid pressure actuator with proximity position sensor|
    US4385297A|1980-01-14|1983-05-24|Schmitt Wilhelm E|Arrangement for sensing proximity of a reciprocating member|
    DE3241237C2|1982-11-09|1985-10-24|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Thrust piston gear, in particular for use as a return cylinder in mining operations, with a permanent magnet system arranged on the piston rod|
    DE3314111A1|1983-04-19|1984-10-25|Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart|DEVICE FOR INDIVIDUAL POSITION INDICATION OF HYDRAULICALLY ACTUATED SHIFT RODS|
    DE3437150A1|1984-10-10|1986-04-10|Robert Bosch Gmbh, 7000 Stuttgart|VALVE|
    DE3525029C2|1984-12-22|1995-08-31|Festo Kg|Piston-cylinder arrangement|
    US4681992A|1986-03-06|1987-07-21|C. M. Smillie & Company|Cushioned clamp cylinder with proximity switches|
    US4756229A|1986-09-25|1988-07-12|United Technologies Corporation|Digital motor feedback for a position actuator|
    US4755636A|1987-06-24|1988-07-05|Taiyo, Ltd.|Piston position detecting device for fluid pressure cylinder|US5704813A|1995-12-13|1998-01-06|Namco Controls Corporation|Proximity sensor housing and arrangement|
    DE19824940A1|1998-06-04|1999-12-09|Mannesmann Sachs Ag|Operating device for cars, especially slave cylinder with one and/or master cylinder connected hydraulically with this|
    US6941827B2|2003-12-19|2005-09-13|Caterpillar Inc.|Mounting apparatus and method for cylinder position sensor|
    DE102006028785B3|2006-06-23|2007-04-12|Audi Ag|Position sensor arrangement for gear shift rod has rod projecting through boring in oil cavity wall into transmission cavity|
    DE102008035971B3|2008-08-01|2009-09-24|Stabilus Gmbh|Adjusting element for opening and closing hatch of machine part or motor vehicle, has switch element arranged between other two switch elements and actuating microswitch in protective pipe switching position by axial displacement of piston|
    CN104405716B|2014-11-04|2016-03-16|哈尔滨工业大学|Two ends prefastening piezoelectric pile causes the low frictional behavior cylinder of cylinder body multiple modal vibrations|
    CN105366583B|2015-12-15|2019-03-22|常州信息职业技术学院|Intelligent jack device based on wireless communication|
    CN105621305B|2016-03-03|2018-09-28|郑州四维矿业机械有限责任公司|A kind of piston and the jack using the piston|
    JP6437037B2|2017-03-30|2018-12-12|本田技研工業株式会社|Actuator and fluid pressure control circuit having the same|
    法律状态:
    2010-07-20| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: MM4A Effective date: 20070507 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR8706368A|FR2614946B1|1987-05-06|1987-05-06|HYDRAULIC CYLINDER WITH PISTON POSITION CONTROL SYSTEM|
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