CN106838111B - Damping vibration isolation system and composite damping vibration isolator - Google Patents
Damping vibration isolation system and composite damping vibration isolator Download PDFInfo
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- CN106838111B CN106838111B CN201710208735.7A CN201710208735A CN106838111B CN 106838111 B CN106838111 B CN 106838111B CN 201710208735 A CN201710208735 A CN 201710208735A CN 106838111 B CN106838111 B CN 106838111B
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- damping vibration
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- vibration isolation
- bearing disc
- bearing
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a composite damping vibration isolator which comprises a vertical damping vibration isolation mechanism and a transverse damping vibration isolation mechanism; the transverse damping vibration isolation mechanism comprises a clamping ring and a bearing disc; the bearing disc and the clamping ring can slide relatively in the transverse direction; the vertical damping vibration isolation mechanism comprises a sleeve and a friction block; the friction block is sleeved on the sleeve; the friction block is nested in the bearing disc; the friction block and the sleeve can slide relatively in the vertical direction. The damping vibration isolation system comprises a composite damping vibration isolator and a composite damper; when the composite damping vibration isolator is installed and used, a 90-degree included angle is formed between the axial direction of the composite damping vibration isolator and the axial direction of the composite damper. On the basis of the original composite damping vibration isolator, the structure is improved, and the composite damper is additionally arranged for assisting in supporting and decoupling vibration, so that the vibration attenuation and impact resistance effects are more obvious.
Description
Technical Field
The invention relates to a vibration isolator without resonance peak vibration and impact, in particular to a damping vibration isolation system and a composite damping vibration isolator, and particularly relates to a system consisting of the composite damping vibration isolator and a composite damper.
Background
In order to meet the needs of operations under informatization conditions, modern ships have become an integration of various electronic information devices, and an informatization network is formed from operation command, observation communication, weapon emission control and the like, and comprises cabinets of various electronic devices. The ship equipment must be subjected to various environmental conditions to ensure its safety and reliability, the most severe of which are vibration and shock. Vibration and impact assessment items specified by the GJB150 in the state military standard are difficult to pass through without help of good vibration isolators.
The invention patent of CN85103709.7 discloses a composite damping vibration isolator, which successfully solves the problem of vibration isolation of electronic equipment by using a resonance peak-free technology, but is still insufficient in solving the impact protection and preventing coupled vibration of electronic equipment. Along with the popularization of domestic impact test equipment, the impact assessment is emphasized by the military, the force for strictly executing the national military standard is increased, and higher requirements on vibration and impact isolation effects are provided in practical application.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a damping vibration isolation system and a composite damping vibration isolator.
The invention provides a composite damping vibration isolator which comprises a vertical damping vibration isolation mechanism and a transverse damping vibration isolation mechanism; the transverse damping vibration isolation mechanism comprises a clamping ring and a bearing disc; the bearing disc and the clamping ring can slide relatively in the transverse direction; the vertical damping vibration isolation mechanism comprises a sleeve and a friction block; the friction block is sleeved on the sleeve; the friction block is nested in the bearing disc; the friction block and the sleeve can slide relatively in the vertical direction.
Preferably, the device comprises a buffering limiting device and/or a buffering device; a buffering and limiting device is arranged on the outer cylindrical surface of the bearing disc; the lower surface of the bearing plate is provided with a buffer device.
Preferably, the clamping ring has an accommodation space; the outer part of the bearing disc is clamped in the accommodating space; the end face of the bearing disc is provided with an annular inclined plane bulge.
Preferably, characterized by comprising a housing; the vertical damping vibration isolation mechanism also comprises a feedback spring and a pressure bearing sheet; the friction block, the bearing plate, the feedback spring and the shell are connected in sequence.
Preferably, the feedback device comprises two feedback springs which are respectively marked as an upper feedback spring and a lower feedback spring; the upper feedback spring and the lower feedback spring are respectively positioned at the upper side and the lower side of the bearing plate; the lower feedback spring is conical.
Preferably, the damping and vibration isolating device comprises a shell, and the vertical damping and vibration isolating mechanism and the transverse damping and vibration isolating mechanism are both positioned in the shell; the shell comprises an upper shell cover and a lower shell cover; the upper cover and the lower cover of the shell are connected through rivets; the clearance between the clamping ring and the bearing disc is 0.1-0.2 mm.
The invention also provides a damping vibration isolation system, which comprises the composite damping vibration isolator and the composite damper; the axial direction of the composite damping vibration isolator and the axial direction of the composite damper are in a mutually perpendicular state when being installed and used.
Preferably, the composite damping vibration isolator adopts a main bearing spring, and the composite damper adopts an auxiliary bearing spring.
Preferably, a housing; the composite damper comprises a vertical damping mechanism and a transverse damping vibration isolation mechanism; the transverse damping vibration isolation mechanism comprises a clamping ring and a bearing disc; the bearing disc and the clamping ring can slide relatively in the transverse direction; the vertical damping mechanism comprises a sleeve and a friction block; the friction block is sleeved on the sleeve; the friction block is nested in the bearing disc; the friction block and the sleeve can slide relatively in the vertical direction; the vertical damping mechanism also comprises a feedback spring and a pressure bearing sheet; the friction block, the bearing plate, the feedback spring and the shell are connected in sequence.
Preferably, the clamping device comprises a shell, a clamping ring, a bearing disc and an auxiliary bearing spring; a buffering and limiting device is arranged on the outer cylindrical surface of the bearing disc of the composite damper; the clamping ring is provided with an accommodating space; the outer part of the bearing disc is clamped in the accommodating space; the end surface of the bearing disc is provided with an annular inclined plane bulge; the bearing disc, the auxiliary bearing spring and the shell are sequentially connected; the auxiliary bearing spring is conical in shape.
Compared with the prior art, the invention has the following beneficial effects:
1. on the basis of the original composite damping vibration isolator, the structure is improved, and the composite damper is additionally arranged for assisting in supporting and decoupling vibration, so that the vibration attenuation and impact resistance effects are more obvious.
2. The invention has enough negative wave impact resistance.
3. The invention optimizes the design of the rubber piece and fully utilizes the buffer energy-absorbing characteristic of the rubber.
4. The invention properly improves the damping, meets the requirement of improving the impact resistance effect and eliminates the multi-degree-of-freedom coupling vibration.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a front sectional view of the composite damping vibration isolator;
FIG. 2 is a front sectional view of the composite damper.
The figures show that:
Uniform pressure bearing sheet 16 on main screw 9 of lower cover 2 of shell
Upper clamping ring 3 nut 10 lower uniform pressure-bearing sheet 17
Auxiliary bearing spring 19 on main bearing spring 12 of bearing plate 5
Upper conical wedge 6 rubber buffer limiting block 13 and lower auxiliary bearing spring 20
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
According to the research on the impact theory, the impact test analysis and the research on the underwater explosion damage mechanism, the following rules are obtained for guiding the improvement and innovation of the vibration isolator. Firstly, the optimal damping ratio of the anti-impact vibration isolator is 0.3-0.4; secondly, the anti-impact vibration isolator should have a deformation stroke as large as possible, and the energy consumed by the damping force is in direct proportion to the deformation stroke; thirdly, the destructive action negative wave of the underwater explosion is far larger than the positive half wave, the vibration isolator is in tensile damage, and the vibration isolator has enough negative wave resistance; fourthly, rubber is the best choice for buffering and absorbing energy, and the design of a rubber part must be optimized; and fifthly, properly improving the damping and eliminating the multi-degree-of-freedom coupling vibration.
The invention is an improvement based on the above rule, and is realized by the following technical scheme.
The invention provides a damping vibration isolation system, which comprises a composite damping vibration isolator and a composite damper, wherein the composite damping vibration isolator comprises a vertical damping vibration isolation mechanism and a transverse damping vibration isolation mechanism; the composite damper comprises a vertical damping mechanism and a transverse damping vibration isolation mechanism. Specifically, fig. 1 and 2 respectively show the composite damping vibration isolator and the composite damper.
In the embodiment, as shown in figure 1, the upper cover 1 of the outer shell of the composite damping vibration isolator is combined into a preset shape by vulcanization of rubber and metal parts formed by stamping, the shape and the structure of the rubber are suitable for large-amplitude stretching, and the rubber can bear large load when being pressed to play roles in buffering, absorbing energy and limiting. The lower housing cover 2 is a rubber metal member having a similar function to the upper housing cover 1. The clamping ring comprises an upper clamping ring 3 and a lower clamping ring 4, the upper clamping ring 3 and the lower clamping ring 4 are made of polytetrafluoroethylene materials and are respectively embedded in grooves of the upper shell cover 1 and the lower shell cover 2 through glue, and an accommodating space is formed between the upper clamping ring and the lower clamping ring. The bearing plate 5 is made of aluminum alloy or nylon material (used in small load), and is clamped between friction damping clamping rings fixed on the upper cover and the lower cover with a gap of about 0.1-0.2 mm. The center of the bearing disc 5 is a taper hole which is symmetrical up and down, two groups of taper wedges are placed in the taper hole and are respectively marked as an upper taper wedge 6 and a lower taper wedge 7, each group of taper wedges is provided with three small blocks which are distributed along the circumferential direction, a friction pair is formed by encircling a sleeve, and the sleeve is a stainless steel sleeve 8. The center of the stainless steel sleeve is provided with a main screw 9, and when a nut 10 is screwed down, the main screw can connect movable metal parts connected by rubber in the upper cover and the lower cover of the shell into a whole. The non-moving parts of the upper and lower covers of the housing are riveted into a whole by hollow rivets 11 in four holes on four corners of the edge. The vibration isolator can be mounted on the base by screws through the central holes of the four pop rivets. The equipment needing vibration damping and impact resistance is installed on the vibration isolator through main screws 9.
The load of the equipment is transmitted to the bearing plate 5 through the main bearing spring 12, and when vibration and impact in the horizontal direction occur, the bearing plate 5 slides between the two tetrafluoro clamping rings to generate friction damping. When vibration and impact displacement are increased, the inclined plane bulge on the upper surface of the bearing disc 5 increases positive pressure between the bearing disc and the clamping ring, and increases damping force. When vibration and impact displacement are overlarge, the rubber buffering limiting ring 13 on the excircle of the bearing plate plays a buffering role. When vertical vibration and impact occur, the main spring 12 deforms greatly. The stainless steel sleeve 9 will move within the central bore of the conical wedge creating frictional damping. The pressure-bearing sheets comprise an upper uniform pressure-bearing sheet 16 and a lower uniform pressure-bearing sheet 17, and the upper conical wedge 6 and the lower conical wedge 7 are respectively pressed in the conical hole of the bearing disc 5 through the upper uniform pressure-bearing sheet 16 and the lower uniform pressure-bearing sheet 17 by an upper feedback spring 14 and a lower feedback spring 15.
In order to meet the damping force required by impact resistance, the invention reduces the taper angle of the taper hole and the taper wedge, reduces the taper angle by 6 degrees compared with the original invention, increases the rigidity of the lower feedback spring 15 and changes the spring from a cylindrical spring into a nonlinear conical spring. In order to prevent the conical wedge made of tetrafluoro materials from generating creep deformation and uneven stress caused by the increase of spring force, the uniform pressure-bearing sheet is added. When the impact is in a positive half wave, the vibration isolator is compressed, and the rubber of the upper cover 1 of the shell can play a role in buffering and limiting; when the shock absorber is under the negative half-wave impact, the shock absorber is stretched, and at the moment, the rubber buffer seat 18 arranged at the bottom of the bearing plate plays a role in buffering and limiting.
The structure of the composite damper is shown in fig. 2. Practice proves that the composite damper is used as an auxiliary support and is arranged on the upper part of the back of the electronic cabinet, and the electronic cabinet has the best effects of no resonance peak, no coupling vibration, impact resistance and swing resistance. In this case, the composite damper is mainly used to provide a dynamic damping force in addition to providing a partial supporting force in a shock, sway, or the like state. The main difference in structure between the compound damper and the compound damping vibration isolator is that it has no main load spring 12, and two lower-symmetrical auxiliary springs of the same specification are substituted as auxiliary load springs, and the upper and lower positions of the load bearing plate are respectively marked as upper and lower auxiliary load springs 19 and 20. The composite damper also takes reinforcement measures to meet the need for impact resistance, but does not have a rubber cushion seat at the bottom of the carrier pan.
In addition, in the embodiment, a rubber buffer limiting block 13 is arranged on the outer cylindrical surface of the composite damping vibration isolator bearing disc 5 to serve as a transverse buffer limiting device; the invention is not limited to the structural shape and the connection mode shown in the figure, for example, the cross section of the rubber buffer limiting block 13 can be rectangular or the like besides the O-shaped and trapezoidal shapes shown in the figure.
When the vibration isolator is installed and used, an included angle exists between the axes of the composite damping vibration isolator and the composite damper, and preferably, the degree of the included angle is 90 degrees.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. A composite damping vibration isolator is characterized by comprising a vertical damping vibration isolation mechanism and a transverse damping vibration isolation mechanism;
the transverse damping vibration isolation mechanism comprises a clamping ring and a bearing disc; the bearing disc and the clamping ring can slide relatively in the transverse direction;
the vertical damping vibration isolation mechanism comprises a sleeve and a friction block; the friction block is sleeved on the sleeve; the friction block is nested in the bearing disc; the friction block and the sleeve can slide relatively in the vertical direction;
the composite damping vibration isolator also comprises a buffering limiting device and a buffering device;
a buffering and limiting device is arranged on the outer cylindrical surface of the bearing disc;
the lower surface of the bearing disc is provided with a buffer device;
the buffer device can buffer and limit the position from the radial direction and the transverse direction simultaneously.
2. The compound damped vibration isolator of claim 1 wherein the clamp ring has a receiving space;
the outer part of the bearing disc is clamped in the accommodating space;
the end face of the bearing disc is provided with an annular inclined plane bulge.
3. The composite damping vibration isolator of claim 1 including a housing;
the vertical damping vibration isolation mechanism also comprises a feedback spring and a pressure bearing sheet;
the friction block, the bearing plate, the feedback spring and the shell are connected in sequence.
4. The compound damping vibration isolator of claim 3 comprising two said feedback springs, designated upper and lower feedback springs, respectively; the upper feedback spring and the lower feedback spring are respectively positioned at the upper end and the lower end of the bearing plate;
the lower feedback spring is conical.
5. The compound damping vibration isolator of claim 1 comprising a housing, the vertical damping vibration isolation mechanism and the lateral damping vibration isolation mechanism both being located inside the housing;
the shell comprises an upper shell cover and a lower shell cover;
the upper cover and the lower cover of the shell are connected through rivets;
the clearance between the clamping ring and the bearing disc is 0.1-0.2 mm.
6. A damped vibration isolation system comprising the composite damped vibration isolator of any one of claims 1 to 5, further comprising a composite damper;
the axial direction of the composite damping vibration isolator and the axial direction of the composite damper are in a mutually perpendicular state when being installed and used.
7. The damped vibration isolation system of claim 6 wherein the compound damped vibration isolator employs a primary load spring and the compound damper employs a secondary load spring.
8. The damped vibration isolation system according to claim 6, comprising a housing;
the composite damper comprises a vertical damping mechanism and a transverse damping vibration isolation mechanism;
the transverse damping vibration isolation mechanism comprises a clamping ring and a bearing disc; the bearing disc and the clamping ring can slide relatively in the transverse direction;
the vertical damping mechanism comprises a sleeve and a friction block; the friction block is sleeved on the sleeve; the friction block is nested in the bearing disc; the friction block and the sleeve can slide relatively in the vertical direction;
the vertical damping mechanism also comprises a feedback spring and a pressure bearing sheet;
the friction block, the bearing plate, the feedback spring and the shell are connected in sequence.
9. The damped vibration isolation system according to claim 6, comprising a housing, a clamp ring, a carrier disc and a secondary carrier spring;
a buffering and limiting device is arranged on the outer cylindrical surface of the bearing disc of the composite damper;
the clamping ring is provided with an accommodating space; the outer part of the bearing disc is clamped in the accommodating space; the end surface of the bearing disc is provided with an annular inclined plane bulge;
the bearing disc, the auxiliary bearing spring and the shell are sequentially connected;
the auxiliary bearing spring is conical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208735.7A CN106838111B (en) | 2017-03-31 | 2017-03-31 | Damping vibration isolation system and composite damping vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208735.7A CN106838111B (en) | 2017-03-31 | 2017-03-31 | Damping vibration isolation system and composite damping vibration isolator |
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| Publication Number | Publication Date |
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| CN106838111A CN106838111A (en) | 2017-06-13 |
| CN106838111B true CN106838111B (en) | 2020-04-03 |
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| CN201710208735.7A Active CN106838111B (en) | 2017-03-31 | 2017-03-31 | Damping vibration isolation system and composite damping vibration isolator |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108482094B (en) * | 2018-05-14 | 2019-11-05 | 合肥工业大学 | A kind of rubber mounting with energy recovery function and variable rigidity |
| CN110206764A (en) * | 2019-04-26 | 2019-09-06 | 武汉麦康德设备有限公司 | A kind of petrol station horizontal pump group buckle-type vibration isolation gasket ring peculiar to vessel |
| CN110206765A (en) * | 2019-04-26 | 2019-09-06 | 武汉麦康德设备有限公司 | A kind of stand-type pump group buckle-type vibration isolation gasket ring of bunker oil |
| CN110173469A (en) * | 2019-04-26 | 2019-08-27 | 武汉麦康德设备有限公司 | A kind of petrol station horizontal pump group peculiar to vessel answers button-type vibration isolation gasket ring |
| CN110206763A (en) * | 2019-04-26 | 2019-09-06 | 武汉麦康德设备有限公司 | A kind of stand-type pump group of bunker oil answers button-type vibration isolation gasket ring |
| CN110259865B (en) * | 2019-06-04 | 2020-10-09 | 常州大学 | Damping shock absorber without peak for resonance band |
| CN111249959B (en) * | 2020-01-20 | 2022-03-25 | 西安近代化学研究所 | Three-freedom-degree motor-driven mixing device |
| CN111365398A (en) * | 2020-03-16 | 2020-07-03 | 中国飞机强度研究所 | Vibration isolator |
| CN112855834B (en) * | 2021-01-29 | 2022-12-09 | 无锡市江大隔振器有限公司 | Strong impact resistant bottom shock absorber |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB772419A (en) * | 1955-01-17 | 1957-04-10 | Barry Controls Inc | Improvements in or relating to vibration isolators |
| GB1332538A (en) * | 1970-12-15 | 1973-10-03 | Gomma Antivibranti Applic | Spring-and-damping device |
| CN85103709B (en) * | 1985-05-15 | 1988-02-24 | 上海交通大学 | Composite damping vibration isolator |
| CN101900177B (en) * | 2010-08-04 | 2013-10-02 | 中国船舶重工集团公司第七二二研究所 | Vibration isolator |
| CN102003487A (en) * | 2010-12-10 | 2011-04-06 | 北京首航波纹管制造有限公司 | Damping compensator |
| CN104747643A (en) * | 2014-07-21 | 2015-07-01 | 周鸿钧 | Rubber air spring use for industrial equipment |
| CN104712696B (en) * | 2015-03-31 | 2016-08-31 | 江苏欣捷诺环境工程技术有限公司 | A kind of Coulomb damping device |
| CN104930100B (en) * | 2015-06-14 | 2017-05-31 | 中国电子科技集团公司第十研究所 | High-effect dry-friction damping spring vibration-isolator |
| CN206723338U (en) * | 2017-03-31 | 2017-12-08 | 勾厚渝 | Damping isolation system and compound damping isolator |
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2017
- 2017-03-31 CN CN201710208735.7A patent/CN106838111B/en active Active
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