CN206668842U - A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle - Google Patents
A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle Download PDFInfo
- Publication number
- CN206668842U CN206668842U CN201720424163.1U CN201720424163U CN206668842U CN 206668842 U CN206668842 U CN 206668842U CN 201720424163 U CN201720424163 U CN 201720424163U CN 206668842 U CN206668842 U CN 206668842U
- Authority
- CN
- China
- Prior art keywords
- stage clip
- extension spring
- casing
- guide rod
- spline housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle, it is made up of power input portion, extension spring system, stage clip system and shell, extension spring system realizes positive rigidity, stage clip system realizes negative stiffness, and the two, which is combined, makes static system power displacement curve that quasi- zero stiffness characteristic be presented.The utility model has continued the excellent anti-vibration performance of nonlinear isolation device, simultaneously by adjusting helicitic texture, and the number of increase and decrease extension spring group, the applicable vibration isolation mass range of vibration isolator can be greatly improved, overcomes the shortcomings that common nonlinear isolation device vibration isolation mass range is small.
Description
Technical field
The utility model belongs to low frequency vibration isolation field, and in particular to it is a kind of with larger vibration isolation quality adjustment scope based on
The dish type non-linear low frequency vibration isolator of positive and negative Stiffness principle.
Background technology
Low-frequency vibration in engineering influences the stability and precision of equipment, part strength is reduced or even is occurred tired broken
It is bad, unnecessary loss is caused, while noise pollution is also brought along, the low-frequency vibration in some fields can also endanger staff
Physical and mental health.In order to solve this limitation, effective low frequency vibration isolation design is the research emphasis of each engineering field.
Theoretical by traditional passive vibration isolation, the isolation effect of linear vibrating isolation system centering dither is preferable, but due to its change
Contradiction between shape and rigidity, isolate the poor-performing of low-frequency vibration.Therefore, linear vibrating isolation system is difficult to meet engineering field
A variety of low frequency vibration isolation demands.If using active, semi-active vibration-isolating, although the low frequency vibration isolation performance that can have been realized, can be related to
To control technology, system complexity is increased, it is difficult to avoid structure excessive, and energy resource consumption is big and with high costs.
Nonlinear Vibration Isolation System based on positive and negative Stiffness principle can overcome the shortcomings of linear vibrating isolation system, low frequency every
Performance of shaking is good, therefore is paid attention to by each area research personnel.But it is ensured that the good anti-vibration performance of this system, it is necessary to
Real load is asked to have relatively large deviation between its balancing load.By designing adjusting apparatus, vibrating isolation system can be increased
The quality scope of application, but the Mass adjust- ment scope of existing system still suffers from deficiency, i.e., can not be adjusted on a large scale.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the utility model provides one kind and is based on positive and negative Stiffness
The low frequency vibration isolation device of principle.It forms nonlinear system using multigroup spring, and a spring provides positive rigidity in every group, another
Spring provides negative stiffness, and due to special Design of Mechanical Structure, the vibration that the external world transmits is converted into the rotation of main shaft by vibration isolator.
Its advantage is that the group number and pretightning force of spring can be adjusted flexibly according to load, extends vibration isolation mass range, is had stronger
Adaptability, there is preferable low frequency vibration isolation effect.
The utility model includes power input portion, extension spring system, stage clip system and shell, and power input portion is by leading
Bar, leader casing, outer casing sleeve, bolt, bearing pin, vertical connecting rod, tranverse connecting rod and splined shaft composition, guide rod is the utility model
With the connector of vibration isolation object, the two is connected by the flange of guide rod end.Leader casing is interference fitted with guide rod, with casing
Cylinder coordinates for gap, so that guide rod can move along a straight line under the limitation of casing.Outer casing sleeve is bolted on outer
On housing box outer wall.
There are the radial hole of insertion, under no load, positioning in described guide rod, leader casing and casing middle part
Bolt can pass through guide rod, leader casing and outer casing sleeve.The position of guide rod is set to be fixed relative to casing.
Described guide rod and vertical connecting rod have split pin to be used to limit bearing pin axial location by hinge on bearing pin, this
The be hinged of utility model uses such a mode, therefore repeats no more below.Vertical connecting rod passes through hinge, tranverse connecting rod with tranverse connecting rod
End is that an inner spline housing tranverse connecting rod is nested in the middle part of splined shaft by inner spline housing.
Described extension spring system is made up of extension spring spline housing, several extension springs and extension spring governor motion.Extension spring spline is nested
Described splined shaft one end is enclosed on, extension spring spline housing is radially about hinged several extension springs, and the extension spring other end is hinged with extension spring regulation
Mechanism.
Described extension spring governor motion is made up of extension spring regulating bolt and extension spring adjusting nut, and extension spring regulating bolt passes through
The unthreaded hole of casing box, extension spring regulating bolt end are combined with extension spring adjusting nut, and regulation extension spring adjusting nut is i.e. adjustable corresponding
The pretightning force of extension spring.
Described stage clip system is made up of stage clip spline housing, the connection of several stage clips, several stage clips and stage clip governor motion,
Stage clip spline housing is nested in the other end of described splined shaft, and several stage clip connections, stage clip connection are hinged around stage clip spline housing
The nested several stage clips in end, several stage clip other ends are nested on stage clip connection lug bosses at end part, such a to arrange to realize stage clip
Freely stretch and rotate, while be also unlikely to cause the unstability of stage clip in deformation process.Stage clip connects and stage clip governor motion
It is be hinged.
Described stage clip governor motion is made up of stage clip regulation and stage clip regulating bolt, and there is blind hole stage clip regulating part one end,
Voltage supply spring regulating bolt positions.Stage clip regulating bolt is screwed on the screwed hole of casing box, and regulation stage clip regulating bolt is adjustable
Seamless spring pretightning force.
Described shell includes casing box, limited block, casing cover, bearing and bearing cap.Wherein, limited block is consolidated by bolt
It is scheduled on the inwall of casing box, plays a part of limiting the position of stage clip regulating part and glide direction is provided.Casing cover passes through spiral shell
Bolt is fixed on the floor of casing box.Bearing is embedded in the through hole in casing cover center.Bearing cap is fixed on casing cover, its side
In the raised cyclic structure insertion casing cover center through hole in face, end is withstood on bearing outer ring, to limit the axial location of bearing.
The beneficial effects of the utility model：
Nonlinear system is formed using multigroup spring, a spring provides positive rigidity in every group, and another spring provides negative
Rigidity, due to special Design of Mechanical Structure, the vibration that the external world transmits is converted into the rotation of main shaft by vibration isolator.Its advantage is can
So that the group number of spring and pretightning force to be adjusted flexibly according to load, vibration isolation mass range is extended, there is stronger adaptability, have
Preferable low frequency vibration isolation effect.
Brief description of the drawings
Fig. 1 is power input portion schematic perspective view of the present utility model.
Fig. 2 is extension spring system schematic perspective view of the present utility model.
Fig. 3 is the schematic perspective view of stage clip system of the present utility model.
Fig. 4 is schematic perspective view of the present utility model.
Fig. 5 is the non-linear force-displacement performance diagram that the utility model is presented.
Fig. 6 is the schematic diagram of regulation extension spring pretightning force of the present utility model.
Fig. 7 is the schematic diagram of regulation stage clip pretightning force of the present utility model.
In figure：1-power input portion, 2-extension spring system, 3-stage clip system, 4-shell, 11-guide rod, 12-outer
Valve jacket cylinder, 13-leader casing, 14-bolt, 15-bearing pin, 16-vertical connecting rod, 17-tranverse connecting rod, 18-splined shaft,
21-extension spring governor motion, 211-extension spring regulating bolt, 212-extension spring adjusting nut, 22-extension spring, 23-extension spring spline housing,
31-stage clip governor motion, 311-stage clip regulating part, 312-stage clip regulating bolt, 32-stage clip, the connection of 33-stage clip, 34-
Stage clip spline housing, 41-casing box, 42-limited block, 43-casing cover, 44-bearing, 45-bearing cap.
Embodiment
As shown in figure 4, the utility model includes power input portion 1, extension spring system 2, stage clip system 3 and shell 4, work
When making, casing part and the vibration input source of this device are connected, the end flange of guide rod 11 of power input portion 1 with by vibration isolation pair
As being connected.
As shown in figure 1, described power input portion 1 by guide rod 11, outer casing sleeve 12, leader casing 13, bolt 14,
Bearing pin 15, vertical connecting rod 16, tranverse connecting rod 17 and splined shaft 18 form, wherein, guide rod 11 is the connector with vibration isolation object, is led
It is connected between bar 11 and vibration isolation object by the flange of the end of guide rod 11, leader casing 13 is enclosed on guide rod 11, outer casing sleeve 12
It is enclosed on leader casing 13, leader casing 13 is interference fitted with guide rod 11, and leader casing 13 coordinates with outer casing sleeve 12 for gap, so as to lead
Bar 11 can move along a straight line under the limitation of outer casing sleeve 12, and outer casing sleeve 12 is bolted on the outer of casing box 41
On wall.
There is the radial hole of insertion at described guide rod 11, leader casing 13 and the middle part of outer casing sleeve 12, is not having loaded feelings
Under condition, bolt 14 can pass through guide rod 11, leader casing 13 and outer casing sleeve 12, make the position of guide rod 11 relative to outer casing sleeve
12 fix.
Described guide rod 11 is be hinged by bearing pin 15 with vertical connecting rod 16, has split pin to be used to limit the axle of bearing pin 15 on bearing pin 15
To position, vertical connecting rod 16 is be hinged by bearing pin 15 with tranverse connecting rod 17, and the end of tranverse connecting rod 17 is an inner spline housing, and tranverse connecting rod 17 is logical
Cross inner spline housing and be nested in the middle part of splined shaft 18.
When it is that the utility model is in static that vibration source is without friction, vibration isolation object can be made on guide rod 11 due to deadweight
Radial hole overlapped with the radial hole on outer casing sleeve 12, now unload the bolt 14 traversed between the two, will be by vibration isolation
Object is fixed on guide rod 11, and guide rod 11 and vibration isolation object can the free vibrations in outer casing sleeve 12.When vibration source vibrates
When, vibration isolation object is vibrated relative to vibration source, and this vibration mode passes through the guide rod 11, the and of vertical connecting rod 16 that are hinged
Tranverse connecting rod 17, be delivered on splined shaft 18, forms of motion also from the straight-line oscillation of guide rod 11 be converted to splined shaft 18 toward physical pendulum
It is dynamic.
As shown in Fig. 2 extension spring system 2 is made up of extension spring spline housing 23, several extension springs 22 and extension spring governor motion 21, draw
Spring spline housing 23 is nested in the one end of splined shaft 18, and extension spring spline housing 23 is radially about hinged several extension springs 22, and each extension spring 22 is another
End is hinged with extension spring governor motion 21.
As shown in fig. 6, described extension spring governor motion 21 is by 212 groups of extension spring regulating bolt 211 and extension spring adjusting nut
Into extension spring regulating bolt 211 passes through casing box 41, and the end of extension spring regulating bolt 211 is combined with extension spring adjusting nut 212, regulation
Extension spring adjusting nut 212 is the pretightning force of adjustable corresponding extension spring 22.
Splined shaft 18 drives the reciprocally swinging of extension spring spline housing 23, so that several extension springs 22 occur dilatation and can be with
The small size rotation ignored.Therefore, act on guide rod 11 be used for balance pull-spring 22 act on power formed with the displacement of guide rod 11 it is firm
Line of writing music is in positive stiffness characteristics.
As shown in figure 3, described stage clip system 3 by stage clip spline housing 34, several stage clip connectors 33, several stage clips 32 with
And stage clip governor motion 31 forms, stage clip spline housing 34 is nested in the other end of splined shaft 18, is hinged around stage clip spline housing 34
Several stage clip connectors 33, the nested several stage clips 32 in the end of stage clip connector 33, each other end of stage clip 32 are nested in stage clip connection
On the lug bosses at end part of part 33, such a arrangement is also unlikely in deformation process with realizing freely stretching and rotating for stage clip 32
Cause the unstability of stage clip 32.Stage clip connector 33 is be hinged with stage clip governor motion 31.
As shown in fig. 7, described stage clip governor motion 31 is made up of stage clip regulating part 311 and stage clip regulating bolt 312,
There is blind hole the one end of stage clip regulating part 311, and voltage supply spring regulating bolt 312 positions.Stage clip regulating bolt 312 is screwed in casing box 41
On screwed hole, the i.e. adjustable pretightning force of stage clip 32 of regulation stage clip regulating bolt 312.
As shown in figs. 4 and 7, described shell 4 includes casing box 41, limited block 42, casing cover 43, bearing 44 and bearing
Lid 45, limited block 42 are bolted on the inwall of casing box 41, play position and the offer of limitation stage clip regulating part 311
The effect of glide direction, casing cover 43 are bolted on the floor of casing box 41, and bearing 44 is embedded in casing cover 43
In the through hole of centre, bearing cap 45 is fixed on casing cover 43, in the cyclic structure insertion casing cover 43 of the lateral projections of bearing cap 45
Entreat in through hole, the end of bearing cap 45 is withstood on the outer ring of bearing 44, to limit the axial location of bearing 44.
Splined shaft 18 drives the reciprocally swinging of stage clip spline housing 34, so that dilatation and reciprocating rotary occur for several stage clips 32
It is dynamic.When guide rod 11 moves downward by equilbrium position, stage clip 32 is changed into tilting state from vertical state, and the elastic force of stage clip 32 subtracts
It is small, but elastic force increases the torque radius of splined shaft 18, and final to cause the torque of elastic force first reduces to increase afterwards, guide rod 11 is through flat
Weighing apparatus position also has similar situation to occur when moving upwards.Finally, act on guide rod 11 and be used for the power for balancing the effect of stage clip 32
The stiffness curve formed with the displacement of guide rod 11 is in negative stiffness characteristic.
Extension spring system 2 is combined with the positive negative stiffness of stage clip system 3, and the overall force-displacement curve of the utility model is presented
Quasi- zero stiffness nonlinear characteristic shown in Fig. 5.When the working condition of vibration isolator is in workspace, the utility model has larger hold
Loading capability, and when guide rod 11 vibrates in operation interval, more steady external active force can be kept.At vibration isolator working condition
When nonclient area, the big stiffness characteristicses of power displacement curve can play a part of limitation vibration.
In the utility model, as shown in Figure 6 and Figure 7, the extension spring regulation of regulation extension spring system 2 and the end of stage clip system 3
Nut 212 and stage clip regulating bolt 312 can increase the pretightning force of extension spring 22 and stage clip 32 respectively, so that different quality
Vibration isolation object can be in equilbrium position in static state.In addition, when any two extension spring 22 and stage clip 32 are as one group of spring
The nonlinear characteristic shown in Fig. 5 can be realized, therefore the drawing-pressing spring group for increasing and decreasing identical quantity can greatly improve this practicality
New vibration isolation mass range.Furthermore the friction in the utility model between leader casing 13 and outer casing sleeve 12 can be this reality
Damped with new offer part with the vibrational energy that dissipates, can increase damper in specific implementation process to improve the utility model
Vibration isolating effect.
Claims (1)
- A kind of 1. dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle, it is characterised in that：Inputted including power Partly (1), extension spring system (2), stage clip system (3) and shell (4), shell (4) are connected with vibration input source, power input portion (1) guide rod (11) end is connected with vibration isolation object；Described power input portion (1) is by guide rod (11), outer casing sleeve (12), leader casing (13), bolt (14), bearing pin (15), vertical connecting rod (16), tranverse connecting rod (17) and splined shaft (18) composition, wherein, guide rod (11) is the company with vibration isolation object Fitting, guide rod (11) are connected between vibration isolation object by the flange of guide rod (11) end, and leader casing (13) is enclosed on guide rod (11) on, outer casing sleeve (12) is enclosed on leader casing (13), and leader casing (13) and guide rod (11) are interference fitted, leader casing (13) with Outer casing sleeve (12) coordinates for gap, so that guide rod (11) can move along a straight line under the limitation of outer casing sleeve (12), shell Sleeve (12) is bolted on the outer wall of casing box (41)；Described guide rod (11), leader casing (13) and outer casing sleeve (12) there is the radial hole of insertion at middle part, and under no load, bolt (14) can pass through guide rod (11), leader casing (13) and outer casing sleeve (12), make the position of guide rod (11) fixed relative to outer casing sleeve (12)；Described guide rod (11) is with erecting Connecting rod (16) is be hinged by bearing pin (15), has split pin to be used to limit bearing pin (15) axial location, vertical connecting rod on bearing pin (15) (16) be hinged by bearing pin (15) with tranverse connecting rod (17), tranverse connecting rod (17) end is an inner spline housing, and tranverse connecting rod (17) is by interior Spline housing is nested in the middle part of splined shaft (18)；Described extension spring system (2) is made up of extension spring spline housing (23), several extension springs (22) and extension spring governor motion (21), is drawn Spring spline housing (23) is nested in splined shaft (18) one end, and extension spring spline housing (23) is radially about hinged several extension springs (22), each to draw Spring (22) other end is hinged with extension spring governor motion (21)；Described extension spring governor motion (21) is by extension spring regulating bolt (211) And extension spring adjusting nut (212) composition, extension spring regulating bolt (211) pass through casing box (41), extension spring regulating bolt (211) End is combined with extension spring adjusting nut (212), the pretension of the i.e. adjustable corresponding extension spring (22) of regulation extension spring adjusting nut (212) Power；Described stage clip system (3) is by stage clip spline housing (34), several stage clip connectors (33), several stage clips (32) and stage clip Governor motion (31) forms, and stage clip spline housing (34) is nested in the other end of splined shaft (18), is cut with scissors around stage clip spline housing (34) Connect several stage clip connectors (33), the nested several stage clips (32) in stage clip connector (33) end, each stage clip (32) other end nesting On stage clip connector (33) lug bosses at end part；Stage clip connector (33) is be hinged with stage clip governor motion (31)；Described stage clip is adjusted Section mechanism (31) is made up of stage clip regulating part (311) and stage clip regulating bolt (312), and there is blind hole stage clip regulating part (311) one end, Voltage supply spring regulating bolt (312) positions；Stage clip regulating bolt (312) is screwed on the screwed hole of casing box (41), adjusts stage clip Regulating bolt (312) can adjust stage clip (32) pretightning force；Described shell (4) includes casing box (41), limited block (42), casing cover (43), bearing (44) and bearing cap (45), limit Position block (42) is bolted on the inwall of casing box (41), plays position and the offer of limitation stage clip regulating part (311) The effect of glide direction, casing cover (43) are bolted on the floor of casing box (41), and bearing (44) is embedded in shell Cover in the through hole in (43) center, bearing cap (45) is fixed on casing cover (43), the cyclic structure of bearing cap (45) lateral projections In embedded casing cover (43) center through hole, bearing cap (45) end is withstood on bearing (44) outer ring, to limit the axle of bearing (44) To position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720424163.1U CN206668842U (en) | 2017-04-21 | 2017-04-21 | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720424163.1U CN206668842U (en) | 2017-04-21 | 2017-04-21 | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668842U true CN206668842U (en) | 2017-11-24 |
Family
ID=60375281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720424163.1U Withdrawn - After Issue CN206668842U (en) | 2017-04-21 | 2017-04-21 | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870615A (en) * | 2017-04-21 | 2017-06-20 | 吉林大学 | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle |
-
2017
- 2017-04-21 CN CN201720424163.1U patent/CN206668842U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870615A (en) * | 2017-04-21 | 2017-06-20 | 吉林大学 | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106870615B (en) | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle | |
| CN106704474B (en) | The six axial cone shape vibration isolator of self-induction type of Highgrade integration | |
| CN100520333C (en) | High frequency multiple degree of freedom vibration test machine | |
| CN202301728U (en) | Fundamental damping device and fundamental damping system | |
| CN103273502B (en) | Flexible mechanical arm vibration reducing device and method based on controllable rigidity and controllable damp | |
| CN110566630B (en) | Load supporting device integrating vibration reduction of launching section and vibration isolation of on-track section | |
| CN101225865B (en) | Single-degree-of-freedom ultralow frequency vertical vibration isolation system | |
| CN103322105B (en) | Bionic air spring system | |
| CN105570630B (en) | A kind of magnetic current flowing deformation vibration-damping platform with quasi- zero stiffness | |
| CN105485230B (en) | Electromagnetic semi-active vibration isolator achieving quasi-zero rigidity characteristic through asymmetric magnetic tooth structure | |
| CN102494080A (en) | Integral shock absorber device of inertial container and damper in coaxial parallel connection | |
| CN112576689B (en) | Low-frequency heavy-load quasi-zero stiffness vibration isolation device | |
| CN102537184A (en) | Shock absorber capable with dynamically adjustable damping | |
| CN102394548A (en) | Voice coil vibration isolating/vibration suppressing structure and control method thereof | |
| CN111981075A (en) | Quasi-zero rigidity vibration isolation system with bending moment resisting effect | |
| CN111779790B (en) | Vibration damper | |
| CN206668842U (en) | A kind of dish type non-linear low frequency vibration isolator based on positive and negative Stiffness principle | |
| CN104315068A (en) | Low-frequency air spring vibration isolator with motion converter | |
| CN106704439A (en) | Tuned mass damper based on symmetrical combination-type air springs | |
| CN109780112A (en) | A kind of piezoelectric type variation rigidity variable damping dynamic vibration absorber | |
| CN107044506A (en) | A kind of engine dissipative damping device of rigidity controllable | |
| CN105156577B (en) | A kind of employing tilting magnet produces the super damping isolator of negative stiffness | |
| CN104832591A (en) | Composite stiffness damping shock absorber | |
| CN104924293B (en) | A kind of posture adjustment vibration isolation compound platform in parallel | |
| CN203374721U (en) | Bionic air spring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20181009 |