• 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 fluid suspension unit, particularly for heavy motor vehicles, comprising an outer cylinder and an inner cylinder slidably mounted within the outer cylinder, the outer and inner cylinders defining therein a chamber of variable volume containing hydraulic fluid and compressed gas. A diaphragm divides the chamber into two portions and has an opening therein which is normally closed by a mushroom valve. The upper portion of the chamber has a constant volume and a prefixed pressure and the lower portion has a variable volume and a variable pressure, lower or at most equal to that of the upper portion. The mushroom valve, normally closed, opens mechanically only when the suspension reaches a predetermined degree of compression that is when the pressure in the two portions of the chamber are the same. The valve is closed by gravity when the suspension returns to the same predetermined degree of compression.
    公开号:SU1409136A3
    申请号:SU802993803
    申请日:1980-10-16
    公开日:1988-07-07
    发明作者:Перлини Роберто
    申请人:Perlini Roberto；
    IPC主号:
    专利说明:

    (21) 2993803 / 27-11
    (22) 10/16/80
    (31) 63018-A / 79
    (32) 10/17/19
    (33) IT
    (46) 07.07.88. Bksh. 25 (76) Roberto Perlini (IT) (53) 621.272.82 (088.8) (56) U.S. Patent 3,444,830, cl. 108-136,1969.
    (54) ELASTIC ELEMENT HYDROPNEUMATIC SUSPENSION
    (57) The invention relates to hydropneumatic suspensions of vehicles, in particular, to their elastic elements. The purpose of the invention is to change the stiffness of the elastic element depending on the load. Resilient hydropneumatic suspension for heavy vehicles
    gz
    WITH

    about with
    with
    05
    "

    04
    1A09
    contains cylinder 1, measuring bracket 2 with a hole for connection with the wheel axle, and internal cylinder 3. The latter has bracket 1 with an opening. The sleeve 5 is bolted 6 to the right fy cylinder 1. The sleeve has a seal 7 and a sliding support 8 "The sleeve 5 is made with channel 9. With the screws 10, the sleeve 11 is attached to the inner cylinder 3, the sleeve 11 has a sliding support 12,
    .
    one
    This invention relates to hydropneumatic suspension of vehicles, in particular, to their elastic elements.
    The purpose of the invention is to change the stiffness of the elastic element depending on the load.
    Fig. 1 shows an elastic element of a hydropneumatic suspension, the initial state; in fig. 2 - the same, working condition; in fig. 3 - the characteristic stiffness of the elastic element.
    The elastic element of a hydropneumatic suspension for a heavy vehicle contains an outer cylinder 1 with open upper and closed lower ends, provided with a bracket 2 with an opening for swiveling with the wheel axis (not shown), and an inner cylinder 3 mounted slidably inside the arms: : kny cylinder 1. The cylinder 3 has an open bottom and closed upper ends and a bracket 4 with an opening for swiveling with the frame of the vehicle.
    The flange bushing 5 is attached with bolts 6 to the open end of the outer II JI Inda 1 and serves as a guide for the inner cylinder 3 as it moves. The sleeve has a hermetic seal 7 and a sliding support 8 in which the inner cylinder moves. The flange bushing 5 is complete with a passage 9 for the passage of fluid, allowing it to return to
    l-
    6
    provided with channels 13 and non-return valves 14. Bolts H are used for mounting in the inner cylinder 3 a guide element 15 that ends with a partition 16 having an opening. A valve 18 is installed in the guide element 15 of a disk valve. The rod 18, having shoulders 20 and 21, ends with the pusher 22. A chamber 23 is located above the partition 16. 3 Il.
    15
    -
    - five
    0 -
    y-20-30 and t35 idv
    25
    cavity of the elastic element. With bolts 10, a flange bushing 11 is attached to the open end of the inner cylinder 3. The bushing 11 has a sliding support 12 in which the outer cylinder 1 moves. The support 12 is provided with channels 13 for the passage of restricted fluid flow and non-return valves 14, which ensure free return of the fluid flow under compression elastic suspension element and passing a limited fluid flow while stretching the elastic element.
    The bolts 10 also serve to fasten the tubular guide element 15 in the inner cylinder 3, which ends at the top with a reflecting plate or partition 16, which is in tight contact with the inner cylinder 3 and fitted with a central hole 17 coaxially with the tubular guide member 15. In the latter, movably mounted a stem 18 of the poppet valve 19, hermetically closing the opening 17 in the partition 16; On the stem 18, there are made guide beads 20 and 21 sliding along the inner wall of the turbo guide member 15. W current 18 extends beyond the open end of the inner cylinder 3 for a certain distance and ends with the push rod 22.
    The cavity limited to the inner 3 and outer 1 cylinders contains a certain amount of fluid, chosen so that with partial or
    31A
    full stretch of the elastic element in the inner cylinder must retain a certain amount of compressed air both under the partition-16 and above it.
    The length of the rod 18 is chosen such; (Fig. 1) that the pusher rod 22 does not come into contact with the closed bottom of the required cylinder 1 when the elastic element of the suspension is almost fully stretched under minimum load conditions, i.e. when the vehicle is not loaded. The pressure of the compressed gas located under the partition 16 must have a predetermined value that provides the best working conditions for the elastic element at minimum load. At the same time, the chamber 23, located above the partition 16 at the closed position of the disc valve, completely isolated from the rest of the suspension unit, is filled with gas, compressed to significant pressure.
    When the vehicle is fully loaded, the outer and inner cylinders are displaced relative to each other, and the push rod 22 contacts the bottom of the outer cylinder 10 and opens the poppet valve 19, overcoming the pressure prevailing in the chamber 23. As a result, a single chamber is formed including sections cylinder, lying above the partition 16 and under it, each of which contains 1 szhaty gas. The pressure of the compressed gas in the chamber 23 is selected so that it allows the disc valve 19 to open when the pressure of compressed air or gas under the partition 16 corresponds to the pressure in the chamber 23,
    The full cycle of the elastic suspension element is shown in FIG. 3, in which the curve a reflects the operating mode of the elastic element in the closed position of the disc valve 19, the point Q corresponds to the opening of the valve, and the curve b reflects the mode of operation of the elastic suspension element after the valve is open .
    When reducing the load acting on the elastic element of the suspension, the latter should return to
    one
    0 s 5
    about Q
    ,
    36
    The position in which the chop coil 19 is closed and the chamber / 2 is again isolated. In this case, the pressure in it again reaches a predetermined value, since at Q the valve is unconditionally closed (Fig. 3). One of the advantages of the elastic suspension element is that with each opening cycle and subsequent closure of the disc valve 19, the elastic suspension element is automatically reset to its original position, since the valve closure moment is determined only by the length of the pin 18, Therefore, periodically restoring pressure in chamber 23, which makes it possible to use and maintain the proposed elastic suspension element in the same way as conventional hydropneumatic nical elastic suspension element.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    An elastic element of a hydropneumatic suspension, mainly for a heavy vehicle, comprising an outer cylinder and an inner cylinder, hermetically movably mounted inside the outer cylinder and bounding with it a closed variable volume chamber filled with liquid and gas in a predetermined ratio, and the compartment of the chamber filled with gas is divided on the upper cavity of a high pressure and the lower cavity of a low pressure by a partition with a hole, normally closed with a poppet valve with a pusher, a mechanical Interactively interacting with the inner cylinder depending on the relative position of the indicated cylinders, characterized in that, in order to change the rigidity depending on the load, the stroke of the inner cylinder of the elastic element before interacting with the valve pusher is selected based on the equalization condition and the elastic element is closed relative to the atmosphere.
    23
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    f2
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    Fig.z
    类似技术:
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    同族专利:
    公开号 | 公开日
    CS268505B2|1990-03-14|
    SE444541B|1986-04-21|
    DE3034103A1|1981-04-30|
    US4915364A|1990-04-10|
    DE3034103C2|1989-09-21|
    BE885066A|1980-12-31|
    CA1141787A|1983-02-22|
    AR223893A1|1981-09-30|
    YU242480A|1983-01-21|
    SE8006441L|1981-04-18|
    IT7969018D0|1979-10-17|
    GB2060814A|1981-05-07|
    CS665780A2|1989-08-14|
    BR8005507A|1981-05-19|
    JPS5663146A|1981-05-29|
    FR2467719A1|1981-04-30|
    YU42518B|1988-10-31|
    FR2467719B1|1985-03-22|
    JPS6118059B2|1986-05-10|
    GB2060814B|1984-07-11|
    IT1119229B|1986-03-03|
    引用文献:
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    US1371648A|1919-09-22|1921-03-15|Schmidt Frank|Pneumatic spring-support for motor-vehicles|
    US1439417A|1920-07-03|1922-12-19|Bradford B Holmes|Pneumatic cushion|
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    US1664510A|1924-01-09|1928-04-03|Jr Howard R Hughes|Shock absorber|
    GB430337A|1932-11-12|1935-06-13|Wilhelm Langguth|Improvements in and relating to shock-absorbers|
    DE680672C|1933-03-26|1939-09-06|Aeg|Method and arrangement for grid control of elastic converters in alternating current networks, in which the phase position of the alternating voltage is subject to at most minor fluctuations|
    GB554197A|1941-11-03|1943-06-24|Kigass Ltd|Shock-absorbing devices for power-driven vehicles|
    FR1171409A|1957-02-22|1959-01-26|Cleveland Pneumatic Tool Co|Advanced multi-stage hydraulic elastic device|
    US3000624A|1958-11-10|1961-09-19|Gen Motors Corp|Air spring assembly and control device therefor|
    US3168302A|1962-12-26|1965-02-02|Caterpillar Tractor Co|Vehicle suspension systems|
    DE1530741A1|1964-03-26|1969-11-27|Fichtel & Sachs Ag|Hydropneumatic suspension, especially for motor vehicles|
    DE1287454B|1964-12-01|1969-01-16|
    DE1259212B|1965-09-09|1968-01-18|Hoesch Ag|Switching device for electrical level control of gas springs, especially for motor vehicles|
    US3444830A|1965-12-10|1969-05-20|Stabilus Ind Handels Gmbh|Adjustable gas spring supported drawing table|
    US3499639A|1966-04-27|1970-03-10|Saviem|Hydropneumatic suspension systems of vehicles|
    US3387840A|1966-10-07|1968-06-11|Westinghouse Air Brake Co|Suspension unit|
    DE1291568B|1967-05-10|1969-03-27|Fritzmeier Kg Georg|Hydro-pneumatic suspension, especially for seats|
    GB1176627A|1968-02-02|1970-01-07|Caterpillar Tractor Co|Vehicle Suspension Strut.|
    DE1780117A1|1968-08-02|1972-01-20|Langen & Co|Hydro-pneumatic suspension for vehicles|
    US3549168A|1968-09-09|1970-12-22|Clark Equipment Co|Suspension system for a vehicle|
    US3720425A|1969-08-05|1973-03-13|Aisin Seiki|Process and apparatus for the adjustment of the height of the chassis of a wheeled vehicle|
    BE790144A|1971-10-22|1973-04-16|Hoesch Ag|HYDROPNEUMATIC SPRING FORCE LEG WITH INTERNAL LEVEL REGULATOR|
    BE785928A|1971-10-22|1973-01-08|Hoesch Ag|HYDROPNEUMATIC SUSPENSION INSTALLATION WITH INDEPENDENT EXCITATION|
    JPS5121689B2|1972-01-13|1976-07-05|
    GB1500714A|1974-05-08|1978-02-08|Oleo Int Holdings Ltd|Shock absorbers|JPS647252B2|1981-02-12|1989-02-08|Suzuki Motor Co|
    IT1179558B|1984-01-16|1987-09-16|Roberto Perlini|SUSPENSION FOR VEHICLES WITH ELEMENTS OF DIFFERENT DEGREE OF ELASTICITY|
    DE3403002C2|1984-01-28|1987-06-19|Tillmann Dipl.-Ing. 6109 Muehltal De Freudenberg|
    US4613116A|1984-11-28|1986-09-23|Toyota Jidosha Kabushiki Kaisha|Air suspension|
    DE3442622A1|1984-11-29|1986-05-22|Toyota Jidosha K.K., Toyota, Aichi|Pneumatic spring device|
    CA1274259A|1985-08-26|1990-09-18|Dominick Peter Scotto|Telescoping strut shock isolator|
    US5129635A|1990-06-21|1992-07-14|Power Components, Inc.|Gas spring with c-shaped seal|
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    DE10122729B4|2001-05-10|2006-04-20|Dt Swiss Ag|Spring damper system for bicycles|
    DE10142883C1|2001-09-03|2003-04-24|Stabilus Gmbh|Tripping device for a piston-cylinder unit|
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    FR2957646B1|2010-03-16|2012-08-10|Ratier Figeac Soc|DAMPING DEVICE AT THE END OF THE TRAVEL OF A BODY|
    US8398104B2|2010-10-28|2013-03-19|Jung Yu Hsu|Bicycle seat adjustable device|
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    CN107151894B|2016-03-02|2021-03-02|青岛海尔滚筒洗衣机有限公司|A bumper shock absorber and washing machine for washing machine|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT69018/79A|IT1119229B|1979-10-17|1979-10-17|PNEUMATIC OR HYDROPNEUMATIC SUSPENSION PARTICULARLY FOR HEAVY VEHICLES|
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