CN2235526Y - Back to back type no resonance vibration-damper - Google Patents
Back to back type no resonance vibration-damper Download PDFInfo
- Publication number
- CN2235526Y CN2235526Y CN 95239664 CN95239664U CN2235526Y CN 2235526 Y CN2235526 Y CN 2235526Y CN 95239664 CN95239664 CN 95239664 CN 95239664 U CN95239664 U CN 95239664U CN 2235526 Y CN2235526 Y CN 2235526Y
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- China
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- spring
- connecting rod
- slide plate
- damping
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- Expired - Fee Related
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- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The utility model discloses a back to back type no resonance vibration damper comprising a casing and a damping slide plate. The casing is provided with a through hole, a taper hole is arranged at the middle of the damping slide plate, and the slide plate and the casing are contiguously arranged. A connecting rod is positioned in the through hole of the casing and the taper hole of the damping slide plate, one end of the connecting rod is provided with a boss while the other end is provided with pressing block capable of axially moving with a binding function, and a convex circle is arranged on the pressing block. A conical damping block is arranged between the connecting rod and the taper hole of the damping slide plate, springs are sheathed on the connecting rod, a first spring is arranged between the conical damping block and the pressing block, a second spring is embedded on the convex circle of the pressing block, and the third spring is arranged between the boss of the connecting rod and the inner end surface of the casing.
Description
The utility model relates to a kind of non-bearing formula vibration isolator, especially backing-type resonanceless vibration isolator.
Existing non-bearing formula " back of the body frame vibration isolator " mainly is made up of support, wire rope, the friction slip that is connected with equipment, spring and the friction plate etc. of pushing down slide block by spring.Upper and lower friction plate is clamped slide block by spring, constitutes friction pair.Steel wire penetrating spring, friction plate and slide block, two ends are fixed on the support.Have " zero stiffness " (no rigidity) for making laterally, have in the middle of the slide block a bigger hole to keep slide block and the wire rope contactless state when motion, should make the identical gap of maintenance, i.e. hole and wire rope symmetry between slide block endoporus and the wire rope during installation.Its shortcoming is:
1. hypothesis keeps symmetry status in using, when system is subjected to displacement bigger impact or waves, and amplitude is during greater than the gap between hole and the rope (as be equipped in truck, the naval vessel equipment or system), slide block must produce collision with rope, and cause " shearing " to wire rope, after repeatedly colliding, easily making rope by the root fracture, cause structural failure.This gap that utilizes forms contactless " zero stiffness ", easily becomes the hidden danger of structural reliability;
2. in fact, because the mechanism that does not keep symmetry status between slide block and the rope, generally speaking, actual conditions after the installation is: [1]. the gap distribution between hole and the rope is inhomogeneous, even under the vibration situation of little displacement, also cause collision rope on one side easily,, make motion unstable Yi Bian only make the frictional slip phenomenon; [2] Yi Bian. do not had the gap in the hole, be that hole wall contacts with rope, make rope produce displacement just, because the rigidity after rope is tightened up is very big, the resonance that constant damping force no longer can control system during vibration, even " no resonance peak vibration isolator " adopted in the bottom,, will make system coupled vibrations occur because the response of equipment upper and lower part is differed greatly.[3]. above-mentioned phenomenon all will cause the consequence of " high frequency cutting wire rope ".
Goal of the invention of the present utility model is to provide a kind of reliable in structure, the backing-type resonanceless vibration isolator of Adjustable Damping.
The utility model adopts following technological scheme to realize goal of the invention:
The utility model is made up of housing (1) and damping slide plate (2), on housing (1), have through hole (8), cone shape hole is offered in centre at damping slide plate (2), damping slide plate (2) and the adjacent setting of housing (1), in the cone shape hole of the through hole (8) of housing (1) and damping slide plate (2), be provided with connecting rod (5), one end of connecting rod (5) is provided with boss, the other end is provided with the briquetting (4) that can move axially and have the effect of tightening up, between the cone shape hole of connecting rod (5) and damping slide plate (2), be provided with taper damping block (6), go up also sheathed spring (3) at connecting rod (5), spring (7) and spring (9), spring (7) and spring (9) are located between taper damping block (6) and the briquetting (4), and spring (3) is located between the boss and shell (1) interior edge face of connecting rod (5).Compared with prior art, the utlity model has following advantage: 1. have three-dimensional and do not have the resonance transmission characteristics
The utility model makes the compressive strain of spring generation much larger than vibration displacement by briquetting, wherein cylindrical spring to the active force of taper damping block in the compressing circular cone, make the radial pressure of awl piece generation on the one hand to connecting rod, when system when the left and right direction of Fig. 1 is moved, this pressure will produce Coulomb damping power; On the other hand, the axial force that passes to the damping slide plate by the awl piece makes the damping slide plate produce positive pressure to the housing end face, when system when the upper and lower or left and right direction of Fig. 2 is moved, this positive pressure will produce Coulomb damping power equally.Adjust the active force of spring, can make the resonance of Coulomb damping " pinning " system that is produced conical sliding block.According to stressed relation, adjust the taper hole angle of awl piece and damping slide plate, the Coulomb damping power of three directions is equated.
2. Adjustable Damping
Because the utility model can change the decrement of cylindrical spring easily by briquetting, thereby change the awl piece to the axial pressure of connecting rod and damping slide plate positive pressure to the housing end face, therefore, can require to adjust coulomb friction damped size according to the different levels of shaking in the use.
3. rigidity self compensation
The big taper spring that the utility model adopts, have when displacement hour, rigidity is very low, and when displacement during above certain limit, rigidity then becomes big rigidity self compensation characteristics rapidly with the increase of displacement.Therefore, when system made the less oscillating movement of displacement, its rigidity was compared with bottom vibration isolator rigidity, almost can ignore, be " accurate zero stiffness " state, promptly avoided the rigidity " coupling " with the bottom, help again coming " pinning " system resonance with less Coulomb damping power; And when system is subjected to displacement bigger impact or oscillating motion,, make structure can not produce rigid collision because elastic restoring force increases rapidly, reach the buffering purpose simultaneously again.Being embedded in the little spring (as Fig. 1) that has big stiffness parameters on the briquetting, then is to consider the compensation that can not produce big rigidity to taper spring when Fig. 1 left-hand is made big displacement movement.
4. compact structure is reliable
The utility model makes under identical physical dimension owing to adopt the external mode of damping slide plate, has increased range of movement, perhaps, but in identical range of movement the scaled-back physical dimension, have the characteristics of compact structure.
The utility model is for being the bigger impact of less vibration of displacement or displacement or waving the elasticity-damped motion that has all kept continuous to have structural reliability and stability of motions.It has overcome " back of the body frame vibration isolator " because of the resetting-mechanism of no moving equilibrium point and maintenance symmetry, will cause doing the slide block collision of relative movement even cutting wire rope when system's generation impact or oscillating motion, becomes the hidden danger of structural reliability; And when vibration takes place in system,,,, cause the shortcomings such as instability of system motion Yi Bian frictional slip is then only arranged on one side make and collide wire rope when slide block is reciprocating because the gap between slide block and the wire rope is difficult to keep symmetry.
Fig. 1 is a structural representation of the present utility model;
With reference to the accompanying drawings embodiment of the present utility model being done one describes in detail:
The utility model is made up of housing (1) and damping slide plate (2).On housing (1), have through hole (8), offer cone shape hole, damping slide plate (2) and the adjacent setting of housing (1) in the centre of damping slide plate (2).In the cone shape hole of the through hole (8) of housing (1) and damping slide plate (2), be provided with connecting rod (5), one end of connecting rod (5) is provided with boss, the other end is provided with the briquetting (4) that can move axially and have the effect of tightening up, for reducing cost, be convenient to make, the connecting rod (5) that the utility model is executed in the example adopts bolt, and briquetting (4) adopts nut.Between the cone shape hole of connecting rod (5) and damping slide plate (2), be provided with taper damping block (6), taper damping block (6) can be divided into polylith vertically during enforcement is symmetrical arranged, for example, adopt two and be symmetrical arranged, form the frictional damping cover variable the radial pressure of connecting rod (5).The utility model is gone up sheathed spring (3), spring (7) and spring (9) at connecting rod (5).Spring (7) is located between taper damping block (6) and the briquetting (4), and mobile vertically briquetting (4) can change the axial pressure to the taper damping block.Spring (3) is located between the boss and shell (1) interior edge face of connecting rod (5), spring (3) is main vibration-isolating spring, originally execute and adopt taper spring in the example, can keep connecting rod (5) to have enough elastic movement spaces, have the change rigidity effect when displacement changes again with respect to the internal face of housing (1).Spring (9) as the rigidity compensation is between briquetting (4) and the taper damping block (6), can on briquetting, establish a dome during enforcement, spring (9) is embedded on the boss of briquetting (4), and make and keep a segment distance between the other end of spring (9) and the taper damping block (6), when the utility model was done bigger impact of displacement or oscillating motion, this spring had buffer function.
Claims (6)
1. backing-type resonanceless vibration isolator that is applicable to high center of gravity equipment, comprise housing (1), it is characterized in that it also comprises damping slide plate (2), on housing (1), have through hole (8), cone shape hole is offered in centre at damping slide plate (2), damping slide plate (2) and the adjacent setting of housing (1), in the cone shape hole of the through hole (8) of housing (1) and damping slide plate (2), be provided with connecting rod (5), one end of connecting rod (5) is provided with boss, the other end is provided with the briquetting (4) that can move axially and have the effect of tightening up, between the cone shape hole of connecting rod (5) and damping slide plate (2), be provided with taper damping block (6), go up also sheathed spring (3) at connecting rod (5), spring (7) and spring (9), spring (7) and spring (9) are located between taper damping block (6) and the briquetting (4), and spring (3) is located between the boss and shell (1) interior edge face of connecting rod (5).
2. it is characterized in that according to the described backing-type resonanceless vibration isolator of claim 1 connecting rod (5) adopts bolt, briquetting (4) adopts nut.
3. backing-type resonanceless vibration isolator according to claim 1 and 2 is characterized in that spring (3) is main vibration spring.
4. backing-type resonanceless vibration isolator according to claim 1 and 2 is characterized in that an end of briquetting (4) is provided with dome, and spring (9) is embedded on this dome.
5. according to claim 1 or 4 described backing-type resonanceless vibration isolators, it is characterized in that the segment distance of being separated by between the other end of spring (9) and the taper damping block (6).
6. according to claim 1 or 3 described backing-type resonanceless vibration isolators, it is characterized in that main vibration spring adopts taper spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239664 CN2235526Y (en) | 1995-04-28 | 1995-04-28 | Back to back type no resonance vibration-damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239664 CN2235526Y (en) | 1995-04-28 | 1995-04-28 | Back to back type no resonance vibration-damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235526Y true CN2235526Y (en) | 1996-09-18 |
Family
ID=33881398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95239664 Expired - Fee Related CN2235526Y (en) | 1995-04-28 | 1995-04-28 | Back to back type no resonance vibration-damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235526Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893051A (en) * | 2010-07-23 | 2010-11-24 | 苏州盟通利机电设备有限公司 | Shock absorption method for compression-type mechanical equipment |
| CN103512182A (en) * | 2012-06-21 | 2014-01-15 | 四川制药制剂有限公司 | Damping device suitable for fan coil in medicine producing workshop |
| CN107949722A (en) * | 2015-08-07 | 2018-04-20 | 莫戈公司 | Payload portion shock and vibration isolator |
-
1995
- 1995-04-28 CN CN 95239664 patent/CN2235526Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893051A (en) * | 2010-07-23 | 2010-11-24 | 苏州盟通利机电设备有限公司 | Shock absorption method for compression-type mechanical equipment |
| CN103512182A (en) * | 2012-06-21 | 2014-01-15 | 四川制药制剂有限公司 | Damping device suitable for fan coil in medicine producing workshop |
| CN107949722A (en) * | 2015-08-07 | 2018-04-20 | 莫戈公司 | Payload portion shock and vibration isolator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |