CN108302155A - Group's tune method of quasi- zero stiffness isolation mounting and the isolation mounting and system - Google Patents
Group's tune method of quasi- zero stiffness isolation mounting and the isolation mounting and system Download PDFInfo
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- CN108302155A CN108302155A CN201711296862.3A CN201711296862A CN108302155A CN 108302155 A CN108302155 A CN 108302155A CN 201711296862 A CN201711296862 A CN 201711296862A CN 108302155 A CN108302155 A CN 108302155A
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- stiffness
- negative stiffness
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- retaining mechanism
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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
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
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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
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0011—Balancing, e.g. counterbalancing to produce static balance
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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
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/026—Springs wound- or coil-like
Abstract
A kind of group's tune method of quasi- zero stiffness isolation mounting and the isolation mounting and system, group adjust method to include the following steps：Each quasi- zero stiffness isolation mounting is adjusted to original state, equilbrium position retaining mechanism is locked, the negative stiffness module of negative stiffness system and equilbrium position retaining mechanism composition rigidity；Load floating retaining mechanism is opened, negative stiffness module is made to can be movable relatively with pedestal, multiple quasi- zero stiffness isolation mountings are placed in load lower section, load lifting is unclamped, makes each quasi- zero stiffness isolation mounting free floating；Each quasi- zero stiffness isolation mounting is adjusted to working condition, including carries out following steps successively：By load floating retaining mechanism locking, negative stiffness module is made to be fixed with pedestal, makes fixed support of the negative stiffness frame as negative stiffness system；Equilbrium position retaining mechanism is opened, the participation vibration isolation in parallel with positive stiffness system of negative stiffness system is made.This method automatic capturing carries equilbrium position, improves the application power in large volume, heavy load environment.
Description
Technical field
The present invention relates to vibration isolation technique fields, specifically, be related to a kind of group's tune method of quasi- zero stiffness isolation mounting with
And the isolation mounting and vibrating isolation system.
Background technology
The quasi- zero stiffness isolation mounting of active control pattern can reach very low intrinsic frequency, but due to its high energy consumption, at
The presence for the problems such as this is big, stability is poor, electromagnetic pollution, is suitable only for extremely special application scenario.The quasi- zero stiffness vibration isolation of passive type
There are many correlative studys for device, and there are also the intrinsic frequencies reached less than 1Hz.But more when being applied in combination, due to
Complex object barycenter, which is difficult to determine, causes the load of each quasi- zero stiffness isolation mounting to have a difference, and due to quasi- zero stiffness characteristic,
Its rigidity is especially small and mechanical property is in nonlinear feature, and it is difficult to cause group's tune, currently without case can reach 1Hz with
Under, it is reported that best group adjusts effect to be only capable of reaching the intrinsic frequency of 2Hz.
Invention content
Adjusting method (abbreviation group herein tune side when more of zero stiffness isolation mounting is applied in combination subject to the present invention
Method), and suitable for the isolation mounting and vibrating isolation system of this group tune method, can be applied to simulated experiment, the large size of weightlessness
Low frequency modal test of component etc..
A kind of group's tune method of quasi- zero stiffness isolation mounting, each quasi- zero stiffness isolation mounting include bottom from bottom to up successively
Seat, positive rigid spring, load floating retaining mechanism, equilbrium position retaining mechanism, negative stiffness frame, prefastening force spring and carrying
Platform, the plummer, the prefastening force spring and the negative stiffness frame form negative stiffness system, the plummer, described
Positive rigid spring and the pedestal form positive stiffness system, and the group adjusts method to include the following steps：Step S1, will be each accurate
Zero stiffness isolation mounting is adjusted to original state, includes the following steps：S11 locks equilbrium position retaining mechanism, negative stiffness system
With the negative stiffness module of equilbrium position retaining mechanism composition rigidity；S12 opens load floating retaining mechanism so that negative stiffness
There are relative motion, step S2 that multiple quasi- zero stiffness isolation mountings are placed in load lower section, pine when module bears load between pedestal
The lifting for opening load makes each quasi- zero stiffness isolation mounting free floating；Each quasi- zero stiffness isolation mounting is adjusted to by step S3
Working condition, including following steps are carried out successively：S31, by load floating retaining mechanism locking so that negative stiffness module and pedestal
It is fixed so that fixed support of the negative stiffness frame as negative stiffness system；S32 opens equilbrium position retaining mechanism so that negative
Stiffness system is in parallel with positive stiffness system and participates in vibration isolation work.
Preferably, the equilbrium position retaining mechanism includes being arranged in plummer surrounding and below negative stiffness frame
Locking slot, and enter and exit the middle position pin of each locking slot by negative stiffness frame, the middle position pin enters the locking slot
When, equilbrium position retaining mechanism locking, negative stiffness system is fixed in equilbrium position, and negative stiffness system locks machine with equilbrium position
The negative stiffness module of structure composition rigidity, does not provide negative stiffness for vibrating isolation system；When the middle position pin exits the locking slot, balance
Position retaining mechanism is opened, and negative stiffness system provides negative stiffness for entire vibrating isolation system.
Preferably, the load floating retaining mechanism can be fixed on the base to up and down adjustment, the pedestal be opening to
On channel steel shape, and on its two sides with vertical upper end closed bar-shaped trough, load floating retaining mechanism include by bearing
Rigidity frame extends through the adjusting screw rod of bar-shaped trough to both sides, and screws the regulating nut on adjusting screw rod, works as adjusting
When screw rod and regulating nut unscrew, load floating retaining mechanism is opened, and negative stiffness module is whole according to load free floating；
When adjusting screw rod and regulating nut screw, load floating retaining mechanism locking, negative stiffness module is secured together with pedestal, is
Negative stiffness system provides base support.
Preferably, further include the steps that using levelling mechanism or gasket adjustment water load Pingdu in step S2.
A kind of quasi- zero stiffness isolation mounting includes pedestal, positive rigid spring, load floating locking machine from bottom to up successively
Structure, equilbrium position retaining mechanism, negative stiffness frame, prefastening force spring and plummer, positive rigid spring are erected on pedestal, are used for
The plummer for bearing upper pressure is pressed in the upper surface of positive rigid spring, the periphery of plummer be surrounded be supported on pedestal it is negative just
Frame is spent, horizontal prefastening force spring is provided between negative stiffness frame and plummer, by plummer, prefastening force spring, is born
Rigidity frame forms negative stiffness system, forms positive stiffness system by plummer, positive rigid spring, pedestal, wherein work as equilbrium position
When retaining mechanism is opened, negative stiffness system provides negative stiffness for entire vibrating isolation system, when equilbrium position retaining mechanism is locked, bears
Stiffness system is fixed in equilbrium position, and negative stiffness system forms the negative stiffness module of rigidity with equilbrium position retaining mechanism, no
Negative stiffness is provided for vibrating isolation system；Also, when loading floating retaining mechanism opening, negative stiffness module is according to load freedom
It floats, when loading the locking of floating retaining mechanism, negative stiffness frame is secured together with pedestal, and basis is provided for negative stiffness system
Support.
Preferably, the base openings are upward, and the bar-shaped trough with vertical upper end closed on its two sides, described flat
Weighing apparatus position retaining mechanism is included in the plummer surrounding and the locking slot below negative stiffness frame, and passes through negative stiffness
Frame enters and exits the middle position pin of locking slot；It includes extending through institute from negative stiffness frame to both sides to load floating retaining mechanism
The adjusting screw rod of bar-shaped trough is stated, and screws the regulating nut on adjusting screw rod.
Preferably, there is threaded hole in the upper surface of plummer, is used for installation load.
Preferably, it is useful for the polygonal hole that position is sold in rotation in the end set of middle position pin.
A kind of quasi- zero stiffness vibrating isolation system, including multiple above-described quasi- zero stiffness isolation mountings.
Preferably, the quasi- zero stiffness vibrating isolation system includes the quasi- zero stiffness isolation mounting of at least three, is placed in load lower section.
Description of the drawings
By the way that embodiment is described in conjunction with following accompanying drawings, features described above of the invention and technological merit will become
More understands and be readily appreciated that.
Fig. 1 be the present embodiments relate to quasi- zero stiffness isolation mounting group's tune method schematic diagram；
Fig. 2 be the present embodiments relate to quasi- zero stiffness isolation mounting sectional view.
Specific implementation mode
Group's tune method and the vibration isolation of quasi- zero stiffness isolation mounting of the present invention described below with reference to the accompanying drawings
The embodiment of device and vibrating isolation system.Those skilled in the art will recognize, without departing from the present invention spirit and
In the case of range, described embodiment can be modified with a variety of different modes or combinations thereof.Therefore, attached drawing and
Description is regarded as illustrative in nature, and is not intended to limit the scope of the claims.In addition, in the present specification, it is attached
Figure is drawn not in scale, and identical reference numeral indicates identical part.
A kind of group's tune method of quasi- zero stiffness isolation mounting, this group of tune methods are carried out to each quasi- zero stiffness isolation mounting
Transformation adds equilbrium position retaining mechanism and load floating retaining mechanism for negative stiffness system.Shape according to positive stiffness and negative stiffness parallel connection
Formula so that vibrating isolation system can bear big load and possess low dynamic rate, to generate nonlinear quasi- zero stiffness effect
Fruit.Wherein, vibrating isolation system includes multiple quasi- zero stiffness isolation mountings, each quasi- zero stiffness isolation mounting include negative stiffness system and
Positive stiffness system.As shown in Fig. 2, plummer 1, prefastening force spring 2, negative stiffness frame 3 form negative stiffness system.It is plummer 1, pre-
Clamp force spring 2, negative stiffness frame 3 and equilbrium position retaining mechanism form negative stiffness module.Plummer 1, positive rigid spring 6, bottom
The 7 positive stiffness system of composition of seat.Negative stiffness system, positive stiffness system are connected in parallel by plummer 1.
When equilbrium position retaining mechanism is opened, negative stiffness system provides negative stiffness for entire vibrating isolation system, and when locking is negative
Stiffness system is fixed in equilbrium position, does not provide negative stiffness for vibrating isolation system.
When loading floating retaining mechanism opening, negative stiffness module integrally can work as load according to load free floating
When floating retaining mechanism is locked, negative stiffness module is secured together with pedestal, and base support is provided for negative stiffness system.
The group of the quasi- zero stiffness isolation mounting adjusts method to carry out in accordance with the following steps：
Step S1 adjusts quasi- zero stiffness isolation mounting to original state：
S11) equilbrium position retaining mechanism is locked so that negative stiffness module becomes the entirety of a rigidity, can be whole
It is mobile.
S12) load floating retaining mechanism is opened so that negative stiffness module bears there can be opposite fortune when load between pedestal
It is dynamic.Because at this time there are no placing to load on plummer 1, the elastic force of positive rigid spring 6 can push negative stiffness module to move up.
Wherein, step S11, S12 interchangeables sequence；
Step S2 unclamps load 200 as shown in Figure 1, multiple quasi- zero stiffness isolation mountings 100 are placed in 200 lower section of load
Lifting, make each quasi- 100 free floating of zero stiffness isolation mounting.
Quasi- zero stiffness isolation mounting is adjusted to working condition by step S3：
S31) by load floating retaining mechanism locking so that negative stiffness module is fixed with pedestal 7 so that negative stiffness frame can
Fixed support as negative stiffness system；
S32) equilbrium position retaining mechanism is opened so that negative stiffness system is in parallel with positive stiffness system and participates in vibration isolation work
Make,
Wherein, step S31, S32 can not reversed order.
In one alternate embodiment, the equilbrium position retaining mechanism includes at least a pair of is arranged in negative stiffness system
The middle position pin 4 of equilbrium position, and be arranged on plummer, locking slot corresponding with middle position pin 4 14.Position pin 4 has and beats in this
Tight two states are opened and locked, the locking slot 14 on plummer 1 is threaded in or out by the middle position pin 4, are controlled described negative
Stiffness system provides negative stiffness for entire vibrating isolation system.The load floating retaining mechanism can be fixed on to up and down adjustment pedestal 7
On, and positioned at the lower section of middle position pin 4, the load floating retaining mechanism includes the extended from negative stiffness frame 3 to both sides
Two screw rods 51 and the first screw rod 31, and screw the second nut 52 on the second screw rod 51 and screw on the first screw rod 31
First nut 32.Second screw rod 51, the first screw rod 31 are all fixed together with negative stiffness frame 3.When 52 He of the second nut
When first nut 31 all unscrews, negative stiffness module integrally can be according to load free floating, when the second nut 52 and the first spiral shell
When cap 31 all screws, negative stiffness module is secured together with pedestal, and base support is provided for negative rigidity mechanism.Wherein, this implementation
Example is to use the first screw rod 31 and the second screw rod 51 carrys out shared negative stiffness frame 3, in fact, can also be used only a set of
Screw rod and nut, referred to as adjusting screw rod and regulating nut.Hereinafter only to have the first screw rod 31 and the second screw rod 51
Form be described.
The group of the quasi- zero stiffness isolation mounting adjusts method to carry out in accordance with the following steps：
Step S10 adjusts quasi- zero stiffness isolation mounting to original state：
S101) middle position pin 4 is screwed in locking slot 14 so that negative stiffness module becomes the entirety of a rigidity, can be whole
Body moves.
S102) the second nut 52, the first nut 32 that load floating retaining mechanism are unscrewed so that negative stiffness module is born
There can be relative motion between pedestal 7 when load.
Wherein, step S101, S102 interchangeables sequence.
Multiple quasi- zero stiffness isolation mountings 100 are placed in the lower section of load 200, slowly unclamp load 200 by step S20
Lifting, makes quasi- 100 free floating of zero stiffness isolation mounting.
Quasi- zero stiffness isolation mounting 100 is adjusted to working condition by step S30：
S301) the second nut 52, the first nut 32 that load floating retaining mechanism are screwed so that negative stiffness module and bottom
Seat 7 is fixed so that negative stiffness frame 3 can be used as the fixed support of negative stiffness system.
S302 middle position pin 4) is screwed out into locking slot 14 so that negative stiffness system is in parallel with positive stiffness system and participates in vibration isolation work
Make.
Wherein, S301, S302 can not reversed orders.
So far, group's tune process of the quasi- zero stiffness isolation mounting of self-adaptation type is completed.
In one alternate embodiment, the use of levelling mechanism or gasket is also horizontal by adjustment of load in step S20
State.
In one alternate embodiment, it is placed in load lower section using the quasi- zero stiffness isolation mounting of at least three, carries out group's tune work
Make.
In one alternate embodiment, each quasi- zero stiffness isolation mounting is preferentially placed in the corner location of load.
Group's tune method of the quasi- zero stiffness isolation mounting of the present embodiment, multiple quasi- zero stiffness isolation mountings are with it to load
Adaptive structure, automatic capturing undertake the corresponding equilbrium position of load.Using multiple quasi- zero stiffness isolation mounting combination applications,
The effective vibration isolation range of its low frequency is widened to original 2.3 times.Adjustment process is simplified, regulating time has been saved, it can be at 30 minutes
(structure and adjusting method of common quasi- zero stiffness isolation mounting need 72 hours groups to be adjusted to the interior solid frequency for completing to be adjusted to 0.86Hz
2Hz).Make quasi- zero stiffness isolation mounting that the ability in large volume, heavy load environment be applied to greatly promote.
The group of the quasi- zero stiffness isolation mounting of the present invention adjusts method to be suitable for a variety of quasi- zero stiffness isolation mountings, is only below
A kind of quasi- zero stiffness isolation mounting is illustrated, the group's tune method for the quasi- zero stiffness isolation mounting being not intended to restrict the invention
Application range.
As shown in Figure 1 and Figure 2, quasi- zero stiffness isolation mounting 100 is mainly by pedestal 7, positive rigid spring 6, negative stiffness frame
3, prefastening force spring 2 and plummer 1 assemble from bottom to up successively.Pedestal 7 is opening up channel steel form, in pedestal 7
Bottom surface on there is the setting mounting hole 71 for installing positive rigid spring 6, what positive rigid spring 6 was erect, which be placed in, erects mounting hole 71
It is interior.The bar-shaped trough 8 for penetrating corresponding side wall of setting, also, the upper end of bar-shaped trough 8 are respectively provided on two sides of pedestal 7
It is closed.Negative stiffness frame 3 is erected on two sides of pedestal 7.The two sides of negative stiffness frame 3 pass through bar shaped to both sides
Slot 8, and be fixed in bar-shaped trough 8 by nut.Specifically, the two sides of negative stiffness frame 3 extend first to both sides respectively
Screw rod 31 and the second screw rod 51 in the end of the first screw rod 31 there is screw thread, the first nut 32 to screw the spiral shell in the first screw rod 31
On line.In the end of the second screw rod 51 there is screw thread, the second nut 52 to screw on the screw thread of the second screw rod 51.Unclamp the first spiral shell
Cap 32 and the second nut 52, negative stiffness frame 3 can move up and down in bar-shaped trough 8.Wherein, the present embodiment is to use first
Screw rod 31 and the second screw rod 51 carry out shared negative stiffness frame 3, in fact, a set of screw rod and nut can also be used only can
With referred to as adjusting screw rod and regulating nut.Hereinafter only retouched in the form of with the first screw rod 31 and the second screw rod 51
It states.
It is equipped with the plummer 1 for bearing upper pressure in the upper surface of positive rigid spring 6 pressure.Preferably, for ease of to just
Positive rigid spring 6 is provided with configuration hole 11 in the lower surface of plummer 1.Plummer 1 has the platform for bearing upper pressure
12.Column 17 is extended downwardly out in the lower section of platform 12, use is additionally provided on the opposite two sides of the column 17 of plummer 1
It is horizontally mounted hole 13 in installation pretightening force spring 2.It is respectively provided with prefastening force spring 2, prefastening force spring in the both sides of plummer 1
2 one end, which is withstood on, to be horizontally mounted in hole 13, and the other end is withstood in the mounting hole on negative stiffness frame 3.
Lower section in the position for being horizontally mounted hole 13 of the correspondence both sides of the column 17 of plummer 1, is also respectively provided with
Locking slot 14, corresponded on negative stiffness frame 3 locking slot 14 position have threaded hole, middle position pin 4 by threaded hole screw in or
Screw out locking slot 14.It, then can be by plummer 1, prefastening force spring 2 and negative stiffness frame after position pin 4 screws in locking slot 14 in the middle
Frame 3 becomes the entirety of a rigidity, can move integrally.Due to the supporting role of middle position pin 4, prefastening force spring 2 can only be in water
Level state, the referred to as equilbrium position of negative stiffness system, at this point, negative stiffness system does not provide negative stiffness.Position pin 4 screws out locking in the middle
After in slot 14, due to the support without middle position pin 4, prefastening force spring 2 can have an inclined state, negative stiffness system be every
Vibrating system provides negative stiffness, participation vibration isolation work in parallel with positive stiffness system.
It includes the first screw rod 31, the first nut 32, the second screw rod 51, the second nut 52 to load floating retaining mechanism.First
Screw rod 31, the second screw rod 51 are connected to one with negative stiffness frame 3, and two sides that the second screw rod 51 is pierced by pedestal 7 are logical
The fastening of the second nut 52 is crossed, likewise, two sides that the first screw rod 31 is pierced by pedestal 7 are fastened by the first nut 32.First
Nut 32, the second nut 52 screw, then negative stiffness frame is connected as one with pedestal, and the first nut 32, the second nut 52 unscrew,
Negative stiffness frame 3 can move up and down.
In one alternate embodiment, there is threaded hole 16 in the upper surface of plummer 1, for installing by vibration isolation quality (i.e.
Load).
In one alternate embodiment, it is useful for the polygonal hole 41 that position is sold in rotation in the end set of middle position pin 4.
In one alternate embodiment, it is additionally provided in positive rigid spring and prefastening force spring and is shifted for guide springs
Guide rod (not shown).
The present invention also provides a kind of quasi- zero stiffness vibration isolation using above-described multiple quasi- zero stiffness isolation mounting compositions
System, the quasi- zero stiffness vibrating isolation system include the quasi- zero stiffness isolation mounting of at least three, are placed in load lower section.
Preferably, each quasi- zero stiffness isolation mounting support is arranged in the corner location of load.
Group's tune method of the quasi- zero stiffness isolation mounting of the present invention, multiple quasi- zero stiffness isolation mountings with its to load from
Commensurate structure, automatic capturing undertake the corresponding equilbrium position of load.Using multiple quasi- zero stiffness isolation mounting combination applications,
The effective vibration isolation range of low frequency is widened to original 2.3 times.Adjustment process is simplified, regulating time has been saved, it can be in 30 minutes
Complete the solid frequency for being adjusted to 0.86Hz (common quasi- zero stiffness isolation mounting needs 72 hours groups to be adjusted to 2Hz).Make quasi- zero stiffness every
Vibrating device applies the ability in large volume, heavy load environment to greatly promote.
Positive stiffness and negative stiffness system of the present invention is suitable for the occasion of all this class formation parallel connections, changes positive stiffness and negative stiffness
Form and quantity should be regarded as within the scope of the present invention.For example, 4 faces of plummer 1 all have prefastening force spring, alternatively,
Pedestal is circle, has multiple prefastening force springs being radially arranged and feasible in circumferencial direction.Positive rigid spring 6 is more
A is also feasible.
Positive stiffness and negative stiffness system of the present invention is principle property, increases pre-tightening mechanism to positive stiffness and negative stiffness mechanism, adjusts
Mechanism etc. should be regarded as within the scope of the present invention.For example, applying the pre- of pretightning force to prefastening force spring and positive rigid spring
Tight mechanism adjusts the regulating mechanism etc. of prefastening force spring and positive rigid spring pretightning force.
Equilbrium position retaining mechanism of the present invention, floating retaining mechanism are principle property, to its structure type and number
The change of amount should be regarded as within the scope of the present invention.For example, 4 faces of plummer 1 all have middle position pin and the lock that floats, or
Person, pedestal be circle, circumferencial direction have it is multiple be radially arranged middle positions pin and float lock and it is feasible.
The present invention is carrying adaptive principle and group's tune principle, changes quasi- zero stiffness isolation mounting on this basis
Bearing mode, such as from bearing pressure become bearing pulling force, horizontal load is become from vertical load, it should be regarded as protecting in this patent
In range.
The present invention is carrying adaptive principle and group's tune principle, change on this basis friction of floating, change damping,
The stiffness characteristics etc. for increasing other directions should be regarded as within the scope of the present invention.For example, being prefastening force spring and positive rigidity
Spring installs the damping that linear slide bearing reduces system additional, in prefastening force spring and just rigid to reduce the friction between motor element
Guide rod is set in degree spring.
The present invention is carrying adaptive principle and group's tune principle, increases levelling mechanism, anti-tipping machine on this basis
Structure etc., should be regarded as in the scope of this patent.For example, adding the gasket of leveling in plummer upper surface, set on plummer
Skewed horizontal load is set, anti-locking system is toppled over.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification made by all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of group's tune method of quasi- zero stiffness isolation mounting, which is characterized in that each quasi- zero stiffness isolation mounting is successively under
Supreme includes pedestal, positive rigid spring, load floating retaining mechanism, equilbrium position retaining mechanism, negative stiffness frame, pretightning force bullet
Spring and plummer, the plummer, the prefastening force spring and the negative stiffness frame form negative stiffness system, the carrying
Platform, the positive rigid spring and the pedestal form positive stiffness system,
The group adjusts method to include the following steps：
Each quasi- zero stiffness isolation mounting is adjusted to original state, included the following steps by step S1：
S11 locks equilbrium position retaining mechanism, the negative stiffness mould of negative stiffness system and equilbrium position retaining mechanism composition rigidity
Block；
S12 opens load floating retaining mechanism so that there is relative motion between pedestal when negative stiffness module bears load,
Step S2, by multiple quasi- zero stiffness isolation mountings be placed in load lower section, unclamp the lifting of load, make each quasi- zero stiffness every
Vibrating device free floating；
Each quasi- zero stiffness isolation mounting is adjusted to working condition, including carries out following steps successively by step S3：
S31, by load floating retaining mechanism locking so that negative stiffness module is fixed with pedestal so that negative stiffness frame is as negative
The fixed support of stiffness system；
S32 opens equilbrium position retaining mechanism so that negative stiffness system is in parallel with positive stiffness system and participates in vibration isolation work.
2. group's tune method of quasi- zero stiffness isolation mounting according to claim 1, which is characterized in that
The equilbrium position retaining mechanism include be arranged in plummer surrounding and the locking slot below the negative stiffness frame, and
Enter and exit the middle position pin of each locking slot by negative stiffness frame,
When the middle position pin enters the locking slot, equilbrium position retaining mechanism locking, negative stiffness system is fixed in balance position
It sets, the negative stiffness module of negative stiffness system and equilbrium position retaining mechanism composition rigidity does not provide negative stiffness for vibrating isolation system；
When the middle position pin exits the locking slot, equilbrium position retaining mechanism is opened, and negative stiffness system is entire vibrating isolation system
Negative stiffness is provided.
3. group's tune method of quasi- zero stiffness isolation mounting according to claim 2, which is characterized in that
The load floating retaining mechanism can be fixed on the base to up and down adjustment, and the pedestal is the channel steel shape of opening upwards
Shape, and on its two sides with vertical upper end closed bar-shaped trough, load floating retaining mechanism include from negative stiffness frame to
Both sides extend through the adjusting screw rod of bar-shaped trough, and screw the regulating nut on adjusting screw rod,
When adjusting screw rod and regulating nut unscrew, load floating retaining mechanism is opened, and negative stiffness module is whole big according to load
Freedom in minor affairs is floated；
When adjusting screw rod and regulating nut screw, load floating retaining mechanism locking, negative stiffness module is fixed to one with pedestal
It rises, base support is provided for negative stiffness system.
4. group's tune method of quasi- zero stiffness isolation mounting according to claim 1, which is characterized in that in step S2, also wrap
The step of including using levelling mechanism or gasket adjustment water load Pingdu.
5. a kind of quasi- zero stiffness isolation mounting, which is characterized in that include successively pedestal, positive rigid spring from bottom to up, load and float
Dynamic retaining mechanism, equilbrium position retaining mechanism, negative stiffness frame, prefastening force spring and plummer,
Positive rigid spring is erected on pedestal, and the plummer for bearing upper pressure is pressed in the upper surface of positive rigid spring, carrying
The periphery of platform is surrounded with the negative stiffness frame being supported on pedestal, is provided between negative stiffness frame and plummer horizontal pre-
Clamp force spring forms negative stiffness system, by plummer, positive rigid spring, bottom by plummer, prefastening force spring, negative stiffness frame
Seat forms positive stiffness system,
Wherein, when equilbrium position retaining mechanism is opened, negative stiffness system provides negative stiffness for entire vibrating isolation system, works as balance position
When setting retaining mechanism locking, negative stiffness system is fixed in equilbrium position, and negative stiffness system is formed with equilbrium position retaining mechanism
The negative stiffness module of rigidity, does not provide negative stiffness for vibrating isolation system；
Also, when loading floating retaining mechanism opening, negative stiffness module is floated when load and is locked according to load free floating
When tight mechanism locking, negative stiffness frame is secured together with pedestal, and base support is provided for negative stiffness system.
6. quasi- zero stiffness isolation mounting according to claim 5, which is characterized in that
The base openings are upward, and the bar-shaped trough with vertical upper end closed on its two sides, the equilbrium position locking
Mechanism is included in the plummer surrounding and the locking slot below the negative stiffness frame, and entered by negative stiffness frame and
Exit the middle position pin of locking slot；
It includes the adjusting screw rod that the bar-shaped trough is extended through from negative stiffness frame to both sides, Yi Jixuan to load floating retaining mechanism
Close the regulating nut on adjusting screw rod.
7. quasi- zero stiffness isolation mounting according to claim 5, which is characterized in that
There is threaded hole in the upper surface of plummer, be used for installation load.
8. quasi- zero stiffness isolation mounting according to claim 6, which is characterized in that in middle position, the end set of pin is useful for
The polygonal hole that position is sold in rotation.
9. a kind of quasi- zero stiffness vibrating isolation system, including multiple quasi- zero stiffness vibration isolation dresses as described in any one of claim 5-8
It sets.
10. quasi- zero stiffness vibrating isolation system according to claim 9, which is characterized in that the quasi- zero stiffness vibrating isolation system packet
The quasi- zero stiffness isolation mounting of at least three is included, load lower section is placed in.
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