• 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 passive air—spring vibration reduction mechanism with universal dampers and a 'variable rubber membrane comprises damping oil (1), universal dampers (2), a central swing rod (3), swing rods (4), a load limit disc (5), a load disc (6), swing rod balls (7), a rubber membrane fastener (8), a variable rubber membrane (9), a central cavity (10), an auxiliary air chamber (11), a main air chamber shell (12), a main air chamber (13), an auxiliary air chamber shell (14) and damping holes (15). When the mechanism suffers from horizontal vibrations, the central swing rod will move horizontally, and the damping oil and the universal dampers fulfill a damping effect jointly, so that the horizontal vibration isolation performance is improved. Meanwhile, when the mechanism is vibrated, the central cavity will move to drive the variable rubber membrane to compress air, which in turn passes through the damping holes to fulfill a damping effect, so that the horizontal vibration isolation performance is further improved. The passive air—spring vibration reduction mechanism is high in universality, simple in structure and good in manufacturability and has broad application prospects.
    公开号:NL2026160A
    申请号:NL2026160
    申请日:2020-07-29
    公开日:2021-07-20
    发明作者:Li Wanguo；Liu Chengyao；Chen Jiaming
    申请人:Univ Beihang；
    IPC主号:
    专利说明:

    [0001] [0001] Technical Field
    [0002] [0002] The invention provides a passive air-spring vibration reduction mechanism with universal dampers and a variable rubber membrane to be specifically used to suppress vibration transmission generated when precision instruments are disturbed by external low-frequency vibrations, and belongs to the technical field of vibration transmission.
    [0003] [0003] Description of Related Art
    [0004] [0004] At present, passive air-spring vibration reduction mechanisms have been widely applied to the field of precision instruments requiring extremely high environmental stability. Existing passive air-spring vibration reduction mechanisms isolate vibrations in the vertical direction by means of air springs and isolate vibrations in the horizontal direction by means of damping oil. With the precision improvement of the precision instruments, the existing passive air-spring vibration reduction mechanisms applied to the precision instruments can no longer meet the horizontal vibration isolation requirements, and large deviations may be caused even by micro-vibrations. In view of this, the invention provides a structure which can effectively improve the damping effect in the horizontal direction and can further improve the horizontal vibration isolation performance of the passive air- spring vibration reduction mechanisms.BRIEF SUMMARY OF THE INVENTION
    [0005] [0005] To overcome the aforementioned drawbacks, the invention provides a passive air-spring vibration reduction mechanism with universal dampers and a variable rubber membrane.
    [0006] [0006] The invention is implemented by means of the following technical solution:
    [0007] [0007] A passive air-spring vibration reduction mechanism with universal dampers and a variable rubber membrane of the invention comprises damping oil, universal dampers, a central swing rod, swing rods, a load limit disc, a load disc, swing
    [0008] [0008] The central cavity will float under the effect of an alr pressure in the main air chamber and will drive the swing rods connected to the central cavity, and the swing rods drive the central swing rod connected to the swing rods to enable the load disc to float;
    [0008] [0008] The variable rubber membrane is circular and fulfills a sealing effect between the main air chamber shell and the central cavity:
    [0010] [0010] When the central cavity moves horizontally, the variable rubber membrane will be subjected to a shape change, but will not be stretched or shrunk, so that when the central
    [0011] [0011] When the central cavity moves vertically, the variable membrane will be subjected to a shape change, but will not be stretched or shrunk, so that the internal volume in the main air chamber will change, and air will pass through the damping holes to fulfill a damping effect;
    [0012] [0012] The universal dampers are immersed in the damping oil, are uniformly distributed in the central cavity in the circumferential direction and have an end fixed to the central cavity and an end fixed to the lower end of the central swing rod; and when the mechanism suffers from horizontal vibrations, the lower end of the central swing rod will move to drive the universal dampers to stretch or retreat to fulfill a damping effect;
    [0013] [0013] The damping oil is stored at the bottom of the central cavity, and when the mechanism suffers from horizontal vibrations, the central swing rod will move, and the damping 0il will fulfill a damping effect;
    [0014] [0014] The load disc will fall onto the load limit disc when not inflated;
    [0015] [0015] Each swing rod has an end provided with one spherical swing rod ball and an end connected to the central swing rod;
    [0016] [0016] The swing rod balls are hinge joints with spherical external surfaces; and
    [0017] [0017] The damping holes are long and thin holes and are uniformly distributed in the lower surface of the main air chamber shell.
    [0018] [0018] The invention has the following beneficial effects: when the mechanism suffers from horizontal vibrations, the central swing rod will move horizontally, and the damping oil and the universal dampers fulfill a damping effect jointly, so that the horizontal vibration isolation performance is improved. Meanwhile, when the mechanism is vibrated, the central cavity will move to drive the variable rubber membrane to compress air, which in turn passes through the damping holes to fulfill a damping effect, so that the horizontal
    [0019] [0019] FIG. 1 is an axial sectional view of a passive air- spring vibration reduction mechanism of the invention;
    [0020] [0020] FIG. 2 is a vertical sectional view of the passive air- spring vibration reduction mechanism of the invention;
    [0021] [0021] Reference signs: 1, damping oil; 2, universal damper; 3, central swing rod; 4, swing rod; 5, load limit disc; 6, load disc; 7, swing rod ball; 8, rubber membrane fastener; 9, variable rubber membrane; 10, central cavity; 11, auxiliary air chamber; 12, main air chamber shell; 13, main air chamber; 14, auxiliary air chamber shell; 15, damping hole.DETAILED DESCRIPTION OF THE INVENTION
    [0022] [0022] The technical solution of the invention will be clearly and completely described below in combination with the accompanying drawings. The embodiment described hereafter is merely an illustrative one of the invention, wherein the number of universal dampers 2 is six, the number of damping holes 15 in the lower surface of a main air chamber shell 12 is three, and the number of swing rods 4 is three. All other embodiments obtained by those ordinarily skilled without creative labor on the basis of the embodiment in the description or embodiments realized by changing the number of the universal dampers should also fall within the protection scope of the invention.
    [0023] [0023] It should be noted that the terms indicating directional or positional relations on the basis of the accompanying drawings such as “upper”, “lower”, “left” and “right” in the description of the invention are merely for the purpose of facilitating the description of the implementation of the invention.
    [0024] [0024] A passive air-spring vibration reduction mechanism with universal dampers and a variable rubber membrane consists of damping oil 1, universal dampers 2, a central swing rod 3,
    [0025] [0025] The central cavity 10 will float under the effect of an air pressure in the main air chamber 13 and will drive the swing rods 4 connected to the central cavity 10, and the swing rods 4 drive the central swing rod 3 connected to the swing rods 4 to enable the load disc 6 to float.
    [0026] [0026] The variable rubber membrane 9 is circular and fulfills a sealing effect between the main air chamber shell 12 and the central cavity 10.
    [0027] [0027] When the central cavity 10 moves horizontally, the variable rubber membrane 2 will be subjected to a shape change, but will not be stretched or shrunk, so that when the central cavity 10 deviates from the central position, the internal volume of the main air chamber 13 will become smaller, and air in the main air chamber 13 will be compressed and pass through the damping holes 15 to fulfill a damping effect.
    [0028] [0028] When the central cavity 10 moves vertically, the variable rubber membrane 9 will be subjected to a shape change, but will not be stretched or shrunk, so that the internal volume of the main air chamber 13 will change, and air will pass through the damping holes 15 to fulfill a damping effect.
    [00298] [00298] The universal dampers 2 are immersed in the damping oil 1 and are uniformly distributed in the central cavity 10 in the circumferential direction, and one end of each universal damper 2 is fixed to the central cavity 10, and the other end of each universal damper 2 is fixed to the lower end of the central swing rod 3; and when the mechanism suffers from horizontal vibrations, the lower end of the central swing rod 3 will move to drive the universal dampers 2 to stretch or retreat to fulfill a damping effect.
    [0030] [0030] The damping oil 1 is stored at the bottom of the central cavity 10, and when the mechanism suffers from horizontal vibrations,, the central swing rod 3 will move, and the damping oil 1 will fulfill a damping effect.
    [0031] [0031] The load disc 6 will fall onto the load limit disc 5 when not inflated.
    [0032] [0032] Each swing rod 4 has an end provided with one spherical swing rod ball 7 and an end connected to the central swing rod
    [0033] [0033] The swing rod balls 7 are hinge joints with spherical external surfaces.
    [0034] [0034] The damping holes 15 are long and thin holes and are uniformly distributed in the lower surface of the main air chamber shell 12.
    [0035] [0035] All alterations, modifications, substitutions and transformations made to the above implementation by those
    - 7 = ordinarily skilled in the art under the enlightenment of the invention without departing from the principle and spirit of the invention should also fall within the protection scope of the invention.
    Aspects of the invention are itemized in the following section.
    1. A passive air-spring vibration reduction mechanism with universal dampers and a variable rubber membrane, comprising damping oil (1), universal dampers (2), a central swing rod (3), swing rods (4), a load limit disc (5), a load disc (6), swing rod balls (7), a rubber membrane fastener (8), a variable rubber membrane (9), a central cavity (10), an auxiliary air chamber (11), a main air chamber shell (12), a main air chamber (13), an auxiliary air chamber shell (14) and damping holes (15), wherein the relationships between the components are as follows: the main air chamber (13) is formed between the main air chamber shell (12) and the central cavity (10), the auxiliary chamber (11) is formed between the auxiliary air chamber shell (14) and the main air chamber shell {12), the variable rubber membrane (9) is mounted between the main air chamber shell (12) and the central cavity (10) and communicated with the main air chamber (13) and has a side pressed by the rubber membrane fastener (8) and the central cavity (10) and a side pressed by the main air chamber shell (12) and the auxiliary air chamber shell (14), the swing rod balls (7) at one ends of the uniformly arrayed swing rods (4) are inserted into hinge cylinders and are able to rotate slightly, another ends of the swing rods (4) are inserted into a disc at a lower end of the central swing rod (3) and are able to rotate slightly, the damping oil (1) is located at a bottom of the central cavity (10), the universal dampers (2) are uniformly arranged at the bottom of the central cavity in a circumferential direction and are immersed in the damping oil (1), sides, close to the central cavity (10), of the universal dampers (2) are fixed to the central cavity (10) to be prevented from swinging, the damping holes (15) are uniformly formed in a lower surface of the main air chamber shell (12), the load limit disc (5) is mounted on the
    - 8 - auxiliary air chamber shell (14), and the load disc (6) is mounted on the central swing rod (3); the central cavity (10) will float under the effect of an air pressure in the main air chamber (13) and will drive the swing rod (4) connected to the central cavity (10), and the swing rods (4) will drive the central swing rod (3) connected to the swing rods (4) to enable the load disc (6) to float; the variable rubber membrane (9) is circular and fulfills a sealing effect between the main air chamber shell (12) and the central cavity (10); when the central cavity (10) moves horizontally, the variable rubber membrane (9) will be subjected to a shape change, but will not be stretched or shrunk, so that when the central cavity (10) deviates from a central position, an internal volume of the main air chamber (13) will become smaller, and air in the main air chamber (13) will be compressed and pass through the damping holes (15) to fulfill a damping effect; when the central cavity (10) moves vertically, the variable rubber membrane (9) will be subjected to a shape change, but will not be stretched or shrunk, so that the internal volume of the main air chamber (13) will change, and the air will pass through the damping holes (15) to fulfill a damping effect; the universal dampers (2) are immersed in the damping oil (1), are uniformly distributed in the central cavity (10) in the circumferential direction and have an end fixed to the central cavity (10) and an end fixed to the lower end of the central swing rod (3); when the mechanism suffers from horizontal vibrations, the lower end of the central swing rod (3) will move to drive the universal dampers (2) to stretch or retreat to fulfill a damping effect; the damping oil (1) is stored at the bottom of the central cavity (10), and when the mechanism suffers from horizontal vibrations, the central swing rod (3) will move, and the damping oil (1) will fulfill a damping effect; the load disc (6) will fall onto the load limit disc (5) when not inflated; each said swing rod (4) has an end provided with one said spherical swing rod ball (7) and an end connected to the
    — g — central swing rod (3); the swing rod balls (7) are hinged Joints with spherical external surfaces; and the damping holes (15) are long and thin holes and are uniformly distributed in the lower surface of the main air chamber shell (12).
    权利要求:
    Claims (1)
    [1]
    1. Passive air spring vibration reduction mechanism with universal dampers and a variable rubber diaphragm, comprising damping oil (1), universal dampers (2), a central swing rod (3), swing rods (4), a load limiting sheave (5), a load sheave (6), swing rod balls (7), a rubber diaphragm seal (8), a variable rubber diaphragm (9), a central cavity (10), an auxiliary air chamber (11), a main air chamber shroud (12), a main air chamber shroud (15), an auxiliary air chamber shroud (14 ) and damping holes (15), the relationships between the components being as follows: the main air chamber (13) is formed between the main air chamber housing {12) and the central cavity {10), the auxiliary chamber (11) is formed between the auxiliary air chamber housing (14) and the main air chamber housing (12), the variable rubber diaphragm (9) is mounted between the main air chamber (12) and the central cavity (10) and communicates with the main air chamber (13) and has one side pressed through the rubber diaphragm lock (8) and the central cavity (10) and a side pressed by the main air chamber housing (12) and the auxiliary air chamber housing {14}, the swing rod balls (7) at one end of the uniformly arranged swing rods (4) are inserted into pivot cylinders and can rotate slightly, other ends of the swivel rods (4) are inserted into a disc at the bottom of the central swivel rod (3) and can rotate slightly, the damping oil (1) is at the bottom of the central cavity (10 ), the universal dampers (2) are arranged evenly circumferentially at the bottom of the central cavity and are immersed in the damping oil (1), sides, close to the central cavity (10), of the universal dampers (2) are fixed to the central cavity (10) to prevent them from swinging, the damping holes (15) are uniformly formed in a lower surface of the main air chamber (12), the load limiting disk (5) is mounted on the auxiliary air chamber bucket shell (14) and load sheave (6) is mounted on the central pivot rod (3); the central cavity (10) will float under the influence of air pressure
    - 11 - into the main air chamber (13) and drives the pivot rod (4) connected to the central cavity (10), and the pivot rods (4) will drive the central pivot rod (3) connected to the pivot rods (4 ) to float the load sheave (6); the variable rubber diaphragm (9) is round and performs a sealing effect between the main air chamber shell {12} and the central cavity (10); when the central cavity (10) moves horizontally, the variable rubber diaphragm (9) will reshape but not be stretched or shrunk, so that when the central cavity (10) deviates from a central position, an internal volume of the main air chamber ( 13) shrinks and the air in the main air chamber (13) is compressed and passes through the damping holes (15) to achieve a damping effect; when the central cavity (10) moves vertically, the variable rubber diaphragm (9) will undergo a change in shape, but will not be stretched or shrunk, so that the internal volume of the main air chamber (13) will change, and the air through the damping holes (15) will go on to fulfill a damping effect; the universal dampers (2) are immersed in the damping oil {1}, are evenly circumferentially distributed in the central cavity (10) and have one end attached to the central cavity (10) and one end attached to the lower end of the central pivot rod (3); if the mechanism undergoes horizontal vibrations, the lower end of the central pivot rod (3) will move to drive the universal dampers (2) to extend or retract to perform a damping effect; the damping oil (1) is stored in the bottom of the central cavity (10) and when the mechanism undergoes horizontal vibrations, the central pivot rod (3) will move and the damping oil (1) will have a damping effect; the load sheave (6) will fall on the load sheave (5) if it is not inflated; each pivot rod (4) has an end provided with a spherical pivot rod ball (7) and an end connected to the central pivot rod (3);
    - 12 — the tow bar balls (7) are articulated joints with spherical outer surfaces; and the damping holes (15) are long and thin holes and are evenly distributed in the lower surface of the main air chamber (12).
    类似技术:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN101398052A|2008-09-17|2009-04-01|华中科技大学|Heavy load precision damper and vibration reduction system formed thereby|
    CN102072275A|2010-11-30|2011-05-25|哈尔滨工业大学|Pneumatic spring vibration isolator of air flotation type forward and backward swing concatenation mechanism based on ball head connecting rod|
    CN102338188A|2010-11-30|2012-02-01|哈尔滨工业大学|Air spring vibration isolator based on piston type liquid viscous damping action|
    US20030006540A1|2001-07-09|2003-01-09|Houghton Worthington B.|Self-aligning mechanism for pneumatic vibration isolators|
    CN102330782B|2010-11-30|2014-02-05|哈尔滨工业大学|Air spring vibration isolator based on gas-liquid damping and coupling action|
    CN206530641U|2017-03-06|2017-09-29|北京华卓精科科技股份有限公司|The isolation mounting of damping oil cylinder in parallel|CN111238753B|2020-03-09|2020-12-11|北京航空航天大学|Small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble|
    CN111396488B|2020-04-08|2021-03-05|北京航空航天大学|Passive air spring vibration reduction mechanism with spherical hinge on swinging plate|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN201911109782.1A|CN110762155B|2019-11-14|2019-11-14|Passive air spring vibration reduction mechanism with universal damper and variable rubber membrane|
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