CN104776148A - Viscous fluid damper for on-orbit vibration isolation of spatial load - Google Patents

Viscous fluid damper for on-orbit vibration isolation of spatial load Download PDF

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Publication number
CN104776148A
CN104776148A CN201510154654.4A CN201510154654A CN104776148A CN 104776148 A CN104776148 A CN 104776148A CN 201510154654 A CN201510154654 A CN 201510154654A CN 104776148 A CN104776148 A CN 104776148A
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China
Prior art keywords
screw
spring sheet
wavy spring
runddichtringo
jack shaft
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CN201510154654.4A
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Chinese (zh)
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CN104776148B (en
Inventor
徐振邦
杨剑锋
夏明一
吴清文
陈涛
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Priority to CN201510154654.4A priority Critical patent/CN104776148B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
    • F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses a viscous fluid damper for the on-orbit vibration isolation of a spatial load, and belongs to the technical field of space optics. The technical problems of difficulty in sealing, low flexural rigidity, poor environmental adaptability, insensitivity to spatial micro vibration and inconsistency between performance under a spatial zero-gravity condition and performance on the ground in the prior art are solved. A wave spring piece I is fixedly connected to the top end of an intermediate shaft through a damping screw I, wherein an upper oil cavity is formed between the wave spring piece I and an end cover; the wave spring piece I is sealed with the upper oil cavity through an O-shaped sealing ring I1, and is sealed with the upper end of the intermediate shaft through an O-shaped sealing ring I2; a wave spring piece II is fixedly connected to the bottom end of the intermediate shaft through a damping screw II; a lower oil cavity is formed between the wave spring piece II and a base; the wave spring piece II is sealed with the lower oil cavity through an O-shaped sealing ring II1, and is sealed with the bottom end of the intermediate shaft through an O-shaped sealing ring II2.

Description

For the viscous liquid damper of space loading vibration isolation in-orbit
Technical field
The invention belongs to space optics technical field, be specifically related to a kind of viscous liquid damper for space loading vibration isolation in-orbit.
Background technique
Along with the development of space technology, there is heavy caliber, high-resolution space optical remote sensor has more and more important business and military value.But what the sports facility such as spaceborne posture adjustment gyro, counteraction flyback, Stretching of solar wings mechanism, coolant pump produced is pointing accuracy and the image quality that vibrations can reduce space optical remote sensor greatly, and spaceborne smart devices also can cannot reach the service behaviour of expection because of the impact vibrated.At present, the normal isolation mounting that adopts carries out vibration isolation.
But vibration isolation of the prior art dress child exist be difficult to seal, flexural rigidity is low, environmental suitability is poor, and technological deficiency that performance of under space below-G conditions with performance on the ground inconsistent insensitive for the micro-vibration in space.
Summary of the invention
The object of this invention is to provide a kind of viscous liquid damper for space loading vibration isolation in-orbit, solve that prior art is difficult to seal, flexural rigidity is low, environmental suitability is poor, and technical problem that performance of under space below-G conditions with performance on the ground inconsistent insensitive for the micro-vibration in space.
The viscous liquid damper that the present invention is used for space loading vibration isolation in-orbit comprises base, wavy spring sheet II, link press span, urceolus, O RunddichtringO I 1, O RunddichtringO I 2, damping screw I, end cap, wavy spring sheet I, inner core, jack shaft, O RunddichtringO II 1, O RunddichtringO II 2with damping screw II;
Wavy spring sheet I is fixedly connected on the top of jack shaft by damping screw I, forms upper oil cavitie between wavy spring sheet I and end cap, and wavy spring sheet I and upper oil cavitie are by O RunddichtringO I 1sealing, wavy spring sheet I passes through O RunddichtringO I with the upper end of jack shaft 2sealing; Wavy spring sheet II is fixedly connected on the bottom of jack shaft by damping screw II, forms lower oil cavitie between wavy spring sheet II and base, and wavy spring sheet II and lower oil cavitie are by O RunddichtringO II 1sealing, wavy spring sheet II passes through O RunddichtringO II with the bottom of jack shaft 2sealing;
Jack shaft is in inner core, link press span and jack shaft are that screw is connected, and link press span and urceolus are screw is connected, end cap is connected with the upper-end surface screw of inner core, base is connected with the lower end surface screw of inner core, the center, top of end cap is by screw closure upper oil cavitie, and the bottom center place of base is by screw closure lower oil cavitie.
The center of described central shaft has damp liquid passage.
All through hole is had in the center of described damping screw I and damping screw II, and the damp liquid channel connection of the through hole of the through hole of damping screw I and damping screw II and jack shaft.
Described end cap inwall presents convex arch.
Described base inner wall is sunken arcs shape.
Working principle of the present invention: vibration isolation object is connected by screw the upper-end surface at urceolus, it is upper oil cavitie between wavy spring sheet I and end cap, be lower oil cavitie between wavy spring sheet II and base, upper oil cavitie is communicated with lower oil cavitie with the through hole of damping screw II by damping screw I through hole, central shaft damp liquid passage; When screw is connected to the vibration isolation vibrating objects of urceolus upper-end surface, vibration is passed to jack shaft by link press span, force jack shaft to-and-fro motion vertically, and then drive shape spring sheet I and wavy spring sheet II up-down vibration, now the volume of upper oil cavitie and lower oil cavitie all changes, make the upper oil cavitie of pressurized or lower oil cavitie internal viscosity liquid stream through the damp liquid through hole of central shaft, thus produce damping.The present invention changes the rigidity of damper by the size changing wavy spring inclined thickness, diameter, waveform quantity and waveform circular arc, is changed the damping constant of damper by the aperture of damp liquid passage and the aperture of damping screw changing jack shaft.
Useful technique effect of the present invention: upper oil cavitie and lower oil cavitie are sealed by O RunddichtringO I and O RunddichtringO II by the present invention, greatly reduce the possibility that damp liquid leaks; End cap in the present invention and base inner wall are circular arc, and have tapped through hole on end cap top and base bottom respectively, easy-to-operat personnel input damp liquid in upper oil cavitie and lower oil cavitie, bubble simultaneously in upper oil cavitie and lower oil cavitie is also easily discharged, and efficiently avoid and produce bubble in upper oil cavitie or lower oil cavitie; And this damper has, and component is few, structure simple, be easy to manufacture, reliability is high, damping constant is large, axial rigidity is low, and has higher torsional rigidity and the advantage of flexural rigidity.
Accompanying drawing explanation
To be the present invention look perspective view for the master of the space loading viscous liquid damper of vibration isolation in-orbit to Fig. 1;
Fig. 2 is the present invention for the plan view of the space loading viscous liquid damper of vibration isolation in-orbit;
Fig. 3 is the present invention for the sectional view along A-A of the space loading viscous liquid damper of vibration isolation in-orbit;
Fig. 4 is the present invention for the plan view of the space loading wavy spring sheet I of the viscous liquid damper of vibration isolation in-orbit;
Fig. 5 is the present invention for the plan view of the space loading wavy spring sheet I of the viscous liquid damper of vibration isolation in-orbit;
Wherein, 1, base, 2, wavy spring sheet II, 3, link press span, 4, urceolus, 5, O RunddichtringO I 1, 6, O RunddichtringO I 2, 7, damping screw I, 8, end cap, 9, wavy spring sheet I, 10, inner core, 11, jack shaft, 12, O RunddichtringO II 1, 13, O RunddichtringO II 2, 14, damping screw II.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
See accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5, the viscous liquid damper that the present invention is used for space loading vibration isolation in-orbit comprises base 1, wavy spring sheet II 2, link press span 3, urceolus 4, O RunddichtringO I 15, O RunddichtringO I 26, damping screw I 7, end cap 8, wavy spring sheet I 9, inner core 10, jack shaft 11, O RunddichtringO II 112, O RunddichtringO II 213 and damping screw II 14;
Wavy spring sheet I 9 is fixedly connected on the top of jack shaft 11 by damping screw I 7, forms upper oil cavitie between wavy spring sheet I 9 and end cap 8, and wavy spring sheet I 9 and upper oil cavitie are by O RunddichtringO I 15 sealings, wavy spring sheet I 9 passes through O RunddichtringO I with the upper end of jack shaft 26 sealings; Wavy spring sheet II 2 is fixedly connected on the bottom of jack shaft 11 by damping screw II 14, forms lower oil cavitie between wavy spring sheet II 2 and base 1, and wavy spring sheet II 2 and lower oil cavitie are by O RunddichtringO II 112 sealings, wavy spring sheet II 2 passes through O RunddichtringO II with the bottom of jack shaft 11 213 sealings;
Jack shaft 11 is in inner core 10, link press span 3 jack shaft 11 is screw connection, and link press span 3 with urceolus 4 for screw is connected, end cap 8 is connected with the upper-end surface screw of inner core 10, base 1 is connected with the lower end surface screw of inner core 10, the center, top of end cap 8 is by screw closure upper oil cavitie, and the bottom center place of base 1 is by screw closure lower oil cavitie.
11 centers of described central shaft have damp liquid passage.
All through hole is had in the center of described damping screw I 7 and damping screw II 14, and the damp liquid channel connection of the through hole of the through hole of damping screw I 7 and damping screw II 14 and jack shaft.
Described end cap 8 inwall presents convex arch.
Described base 1 inwall is sunken arcs shape.

Claims (5)

1., for the viscous liquid damper of space loading vibration isolation in-orbit, it is characterized in that, comprise base (1), wavy spring sheet II (2), link press span (3), urceolus (4), O RunddichtringO I 1(5), O RunddichtringO I 2(6), damping screw I (7), end cap (8), wavy spring sheet I (9), inner core (10), jack shaft (11), O RunddichtringO II 1(12), O RunddichtringO II 2and damping screw II (14) (13);
Wavy spring sheet I (9) is fixedly connected on the top of jack shaft (11) by damping screw I (7), form upper oil cavitie between wavy spring sheet I (9) and end cap (8), wavy spring sheet I (9) and upper oil cavitie are by O RunddichtringO I 1 (5) seal, wavy spring sheet I (9) passes through O RunddichtringO I with the upper end of jack shaft 2(6) seal; Wavy spring sheet II (2) is fixedly connected on the bottom of jack shaft (11) by damping screw II (14), form lower oil cavitie between wavy spring sheet II (2) and base (1), wavy spring sheet II (2) and lower oil cavitie are by O RunddichtringO II 1(12) seal, wavy spring sheet II (2) passes through O RunddichtringO II with the bottom of jack shaft (11) 2(13) seal;
Jack shaft (11) is in inner core (10), link press span (3) with jack shaft (11) for screw is connected, and link press span (3) with urceolus (4) for screw is connected, end cap (8) is connected with the upper-end surface screw of inner core (10), base (1) is connected with the lower end surface screw of inner core (10), the center, top of end cap (8) is by screw closure upper oil cavitie, and the bottom center place of base (1) is by screw closure lower oil cavitie.
2. the viscous liquid damper for space loading vibration isolation in-orbit according to claim 1, it is characterized in that, (11) center of described central shaft has damp liquid passage.
3. the viscous liquid damper for space loading vibration isolation in-orbit according to claim 1, it is characterized in that, all through hole is had in the center of described damping screw I (7) and damping screw II (14), and the through hole of the through hole of damping screw I (7) and damping screw II (14) and the damp liquid channel connection of jack shaft.
4. the viscous liquid damper for space loading vibration isolation in-orbit according to claim 1, it is characterized in that, described end cap (8) inwall presents convex arch.
5. the viscous liquid damper for space loading vibration isolation in-orbit according to claim 1, it is characterized in that, described base (1) inwall is sunken arcs shape.
CN201510154654.4A 2015-04-02 2015-04-02 Viscous fluid damper for on-orbit vibration isolation of spatial load Active CN104776148B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107143601A (en) * 2017-06-01 2017-09-08 中国科学院长春光学精密机械与物理研究所 A kind of liquid condenser
CN110966330A (en) * 2018-09-30 2020-04-07 上海微电子装备（集团）股份有限公司 Combined reed, design method thereof and motion platform

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904002A (en) * 1973-06-22 1975-09-09 Bilstein August Fa Hydropneumatic vibration damper
EP0816140A1 (en) * 1996-06-27 1998-01-07 Lemförder Metallwaren AG Upper strut mount for a motor vehicle suspension
CN1560490A (en) * 2004-02-19 2005-01-05 川 郭 Pressure controlled variable damping vibration attenuator
CN101555923A (en) * 2009-05-27 2009-10-14 陈蕊建 Shock absorber piston assembly and self-adjusting damping shock absorber comprising same
CN202228582U (en) * 2011-09-12 2012-05-23 吕再昌 Piston type liquid and gas buffer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904002A (en) * 1973-06-22 1975-09-09 Bilstein August Fa Hydropneumatic vibration damper
EP0816140A1 (en) * 1996-06-27 1998-01-07 Lemförder Metallwaren AG Upper strut mount for a motor vehicle suspension
CN1560490A (en) * 2004-02-19 2005-01-05 川 郭 Pressure controlled variable damping vibration attenuator
CN101555923A (en) * 2009-05-27 2009-10-14 陈蕊建 Shock absorber piston assembly and self-adjusting damping shock absorber comprising same
CN202228582U (en) * 2011-09-12 2012-05-23 吕再昌 Piston type liquid and gas buffer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107143601A (en) * 2017-06-01 2017-09-08 中国科学院长春光学精密机械与物理研究所 A kind of liquid condenser
CN107143601B (en) * 2017-06-01 2019-03-05 中国科学院长春光学精密机械与物理研究所 A kind of liquid condenser
CN110966330A (en) * 2018-09-30 2020-04-07 上海微电子装备（集团）股份有限公司 Combined reed, design method thereof and motion platform

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