• 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:
    Invention ib. used as a lifting device for truck cranes. The two-stage telescopic hydraulic cylinder comprises a housing 1 with a bottom 2,: a pipeline 3 is fixed to it. The housing 1 has sections 4 of the first stage with a piston 5 and an end plate 6 and section 7 of the second stage with a piston 8. Sections k, 7 form among themselves. and core
    公开号:SU1705398A1
    申请号:SU904807144
    申请日:1990-01-30
    公开日:1992-01-15
    发明作者:Валентин Евгеньевич Панарин；Орест Васильевич Микуляк；Юрий Викторович Черненко；Анатолий Климентьевич Шурин；Владислав Юрьевич Истомин；Александ Давидович Марьяш；Анатолий Иванович Масловский
    申请人:Институт металлофизики АН УССР；Научно-Производственное Объединение "Техноприбор" (Г.Рига)；
    IPC主号:
    专利说明:

    3
    (L
    21
    SP
    co co oo
    Pusy 1 pressure and annular cavity (P) 9, 10,11,12 first and second stages and the internal P 13 second stage. On the piston 5, a double tube k is fixed, which forms a telescopic connection with pipeline 3, the internal space 15 of which is in communication with the external main 16 and channel (K) of the plate 6 with part 18
    thirty
    The invention relates to hydraulic drive and can be used, as an armature, as a lifting device for mobile cranes.
    Figure 1 shows: 1 a two-stage 2Q telescopic hydraulic cylinder in a retracted state; Fig. 2. - the same, with the sections fully extended.
    25
    A two-stage telescopic hydraulic cylinder comprises a housing 1. with a bottom 2, on which a pipeline 3 is fixed. In housing 1, a section 1 of the first stage with a bottom 5 and an end plate 6 and section 7 of the second stage with a piston 8 are installed, forming between themselves and with the case 1 and annular cavities 9 12 of the first and second stages, respectively, and the internal cavity 13 of the second stage. At the bottom 5, a double pipe k is fixed, forming with telescopic pipe 3, the inner space 15 of which is connected to the external line 16 and via channel 1 in plate 6 with part 18 of the annular cavity 12. The outer space 19 of double pipe k is communicated by channel 20 in an end plate 6 with an internal cavity 13, and through a channel 21 in the bottom 5 of the first stage - with an annular cavity 10. The annular cavity 10 is connected to the external highway 22, the pressure cavity 9 to the external trunk 23, cavities 9 and 10 are interconnected sobo with channel 2k in day 5 of the first stage. The area of the pressure cavity 11 is approximately equal to the area of its annular cavity 12, and the volume and area of the internal cavity 13 are equal to the volume and area-ring of the cavity 10.
    3
    , ten
    P 12. The outer space 19 of the pipe 1 is reported to 20 plates 6 with P 13, to 21 pistons 5 - from P 11. P 11 is connected to the external highway 22, P 9 highway-1, 23 P 9, U are connected to each other K 2k in the piston 5. The area of the P 10 is approximately equal to the area of the P 12. The volume and area of the P 1} are equal to the volume and the area of the P 11. 2 Cp f-crystals, 2 ill.
    0

    35
    40
    Two-stage telescopic, hydraulic cylinder works as follows.
    If it is necessary to simultaneously extend the steps, the line 22 is locked, the working medium under pressure is fed through the line 23 into the cavity 9, which causes the section 4 to move, the working medium from the annular cavity 10 through the channel 21, the external space 19 and the channel 20 is forced out into the internal cavity 13, causing the simultaneous movement of section 7 at this annular cavity 12 through the channel 17 to the inner space 15 of the double pipe 11, the pipeline 3 and the highway 16 are connected to the storage medium (not shown).
    For simultaneous retraction of sections of the telescopic cylinder, the working medium under pressure is supplied even: Ree line 16 into the annular cavity 12, section 7 moves down (according to the drawing), the working medium from the internal cavity 13 is displaced into the cola, the cavity 11, removing the section retraction I, while the cavities 10, 9 are connected via line 23 to the drive of the working environment.
    To extend only the second stage of the telescopic cylinder while maintaining the initial position of its first stage, the working medium under pressure is fed through line 22 through the annular cavity 10, channel 21, external space 19 of double pipe 14 and channel 20 into the internal cavity 13, which ensures extension Section 7. The highway 16 is connected at the same time to the storage medium of the working medium, ensuring the discharge of the working medium from the annular cavity 12.18. In this case, the working medium is sucked through line 23 from the accumulator 45
    .50
    55
    whose environment and enters through the channel e of the pressure chamber 11. To draw in the second stage 7, it is necessary to connect lines 22 and 23 to the drain tank, and supply the working medium under pressure through line 16, pipeline 3 and the internal space 15 to the internal cavity 13.
    权利要求:
    Claims (3)
    [1]
    1. A two-stage telescopic hydraulic cylinder containing two movable stages one relative to the other, forming between themselves and with the case pressure and annular cavities of the first and second stages and an internal cavity of the second stage, fixed through the bottom of the case to the bottom of the case, on which is fixed. pipeline made in the form of double pipe, inner space
    0
    five
    0
    five
    0
    five
    which communicates with the pipeline body with the formation of a telescopic pipeline, a system of internal highways, one of which is made in the form of a channel at the bottom of the first stage, connecting the annular cavity of the first stage to the external space of a double pipe, and external hydraulic lines connected to the telescopic pipeline, pressure and ring the cavity of the first stage, characterized in that the first stage is provided with an end plate, limiting the internal cavity of the second stage and forming with the piston w a circular stage consisting of two parts (interconnected with each other and with a telescopic pipeline, the pressure cavities of the first and second stages are permanently interconnected, the external space of the double pipe is connected with the internal cavity, the second stage, whose volume is equal to the volume of the annular the cavity of the first stage, while the area of the pressure cavity of the second stage is equal to the area of its annular cavity.
    [2]
    2. Cylinder pop. 1, characterized by the fact that the area of the annular cavity of the first stage is equal to the area of the internal cavity of the second stage.
    [3]
    3. A cylinder according to claims 1 and 2, characterized in that the end plate has a channel for communicating the annular cavity of the second stage with a telescopic conduit.
    five
    eight
    1
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    同族专利:
    公开号 | 公开日
    EP0273955B1|1989-09-27|
    DE3622424A1|1988-01-14|
    EP0273955A1|1988-07-13|
    US4852464A|1989-08-01|
    DE3760633D1|1989-11-02|
    WO1988000296A1|1988-01-14|
    JPH01500609A|1989-03-01|
    KR880701839A|1988-11-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE7633650U1|1900-01-01|Walter Hunger Kg, 8770 Lohr|
    US2565730A|1949-04-23|1951-08-28|M O Johnston|Cylinder assembly with movable liner|
    DE1107383B|1957-05-29|1961-05-25|Rheinstahl Siegener Eisenbahnb|Double-acting, multi-stage telescopic lifting ram|
    US2910049A|1957-09-20|1959-10-27|Joy Mfg Co|Hydraulic cylinder assembly|
    US2933070A|1958-08-12|1960-04-19|Rheinstahl Siegener Eisenbahnb|Double-acting hydraulic jack|
    US3136221A|1961-10-27|1964-06-09|Phil Wood Ind|Reciprocatory telescoping-piston hydraulic motor|
    GB977800A|1962-08-21|1964-12-16|Electro Hydraulics Ltd|Improvements in or relating to mine roof supports|
    GB1072375A|1963-07-04|1967-06-14|Hanseatische Ind Beteiligungen|Lifting platforms for automobiles|
    BE655844A|1963-11-29|1965-03-16|
    US3603207A|1969-05-26|1971-09-07|Koehring Co|Multiple-cylinder telescopic actuator|
    US3610100A|1969-06-12|1971-10-05|Koehring Co|Telescopic actuator|
    US3696712A|1970-09-28|1972-10-10|Kidde & Co Walter|Multi-section hydraulic ram|
    US3902718A|1971-05-05|1975-09-02|Urbain Avon|Height adjustable diving tower and ladder assembly therefor|
    US3957125A|1971-09-03|1976-05-18|Russell Jr Wayne B|Multi-stage double-acting extendible and contractible shaft drive for drilling device|
    US3956970A|1971-11-02|1976-05-18|Montanhydraulik Gmbh & Co. Kg|Multiple stage hydraulic telescopic cylinder device|
    BG27536A3|1974-06-26|1979-11-12|Linde Ag,De|Telescopic gieting apparatus for highlifters|
    US3958376A|1974-02-15|1976-05-25|Zip Up, Inc.|Extendible tower structure|
    DE7811165U1|1978-04-14|1981-07-23|Montan - Hydraulik GmbH & Co KG, 4755 Holzwickede|Hydraulic telescopic cylinder with a control device|
    DE3150643C2|1981-12-21|1989-09-21|Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De|
    DE8212164U1|1982-04-28|1982-08-12|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|HYDRAULIC PRESS CYLINDER FOR PIPE PRESSING|
    DE3324270C2|1983-07-06|1986-08-07|Montanhydraulik GmbH, 4755 Holzwickede|Telescopic cylinder system|US5011532A|1988-03-18|1991-04-30|Fuisz Pharmaceutical Ltd.|Dispersed systems and method of manufacture|
    DE4209649C2|1992-03-25|1998-12-24|Schloemann Siemag Ag|Multi-stage hydraulic pressure cylinder|
    US6029559A|1998-04-06|2000-02-29|Grove U.S. L.L.C.|Telescoping system with multiple single-stage telescopic cylinders|
    US20060104774A1|2002-12-18|2006-05-18|Sessler Laverne M Jr|Mobile receptacle for a catching debris|
    US7171807B2|2004-02-09|2007-02-06|Norco Industries, Inc.|Oil circuitry for two-stage telescoping transmission jack|
    US7337885B2|2004-12-28|2008-03-04|Smc Corporation Of America|Telescoping cylinder|
    GB0511908D0|2005-06-11|2005-07-20|Stannah Lifts Ltd|Improvements in or relating to drive systems|
    GB2428650B|2005-08-04|2011-01-12|Messier Dowty Ltd|Landing gear|
    US8011873B2|2005-08-31|2011-09-06|Kooima Roger D|Double cylinder tilt recovery system|
    US7823803B2|2007-08-21|2010-11-02|Agco Corporation|Integrated breakaway cylinder and method for constructing a boom assembly|
    AU2011326515B2|2010-11-09|2015-12-03|Wayne S. Travis|Apparatus utilizing buoyancy forces and method for using same|
    CN103032406A|2012-12-30|2013-04-10|蚌埠液力机械有限公司|Synchronized two-stage telescopic cylinder|
    WO2017015406A1|2015-07-20|2017-01-26|Archer Ip, Llc|Baler|
    CN105351283A|2015-10-21|2016-02-24|徐州重型机械有限公司|Double-acting multistage synchronous telescopic oil cylinder|
    US10995565B1|2019-12-18|2021-05-04|Logan Industries International Corporation|Tubular handling tool|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19863622424|DE3622424A1|1986-07-03|1986-07-03|TWO-STAGE TELESCOPIC CYLINDER|
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