CN105972147B - The adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness - Google Patents
The adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness Download PDFInfo
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- CN105972147B CN105972147B CN201610545508.9A CN201610545508A CN105972147B CN 105972147 B CN105972147 B CN 105972147B CN 201610545508 A CN201610545508 A CN 201610545508A CN 105972147 B CN105972147 B CN 105972147B
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- shock absorber
- adjusting rod
- hanger bracket
- vibration
- studs
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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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- General Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
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Abstract
The invention discloses a kind of adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness, including moving platform, suspension assembly, shock absorber and adjusting part, shock absorber is connected with moving platform, and adjusting part is connected with suspension assembly and shock absorber, and for adjusting the initial position of shock absorber.The adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness of the present invention, rigidity easy can be adjusted, and suitable for wide frequency domain vibration isolation, have good engineering adaptability；While with higher support stiffness, also there is very low motion rigidity, static deformation amount is small, and dynamic intrinsic frequency is low, and vibration isolating effect is good；By rigidity, the flexible modulation of damping, can solve the contradiction of the intrinsic contradictions for restricting traditional vibrating isolation system, i.e. low-frequency vibration transport and dither attenuation rate.
Description
Technical field
The invention belongs to absorber technical field, and specifically, the present invention relates to a kind of positive negative stiffness adjustable accurate zero is firm
Spend vibration-isolating platform.
Background technology
High precision machine tool and precision instrument and equipment, high-grade research laboratory's equipment, missile transporter vehicle etc., put down to vibration isolation
Platform proposes higher performance requirement, in Structural Engineering and mechanical engineering field, always all to seek a kind of performance more prominent
Vibration-isolating platform.
The content of the invention
The present invention provides one kind and has both higher static rigidity and relatively low dynamic rate, and can realize the adjustable width of quasi- zero stiffness
The quasi- zero stiffness vibration-isolating platform of frequency domain vibration isolation.
To achieve these goals, the technical scheme taken of the present invention is：The positive adjustable quasi- zero stiffness vibration isolation of negative stiffness is put down
Platform, including：
Moving platform；
Suspension assembly；
Shock absorber, it is connected with moving platform；And
Adjusting part, it is connected with suspension assembly and shock absorber, and for adjusting the initial position of shock absorber.
The adjusting part, which includes, to be the first adjusting rod for being threadedly coupled with the suspension assembly and with the first adjusting rod is
It is threadedly coupled and the second adjusting rod of linear reciprocating motion can be made with respect to suspension assembly, the second adjusting rod is to turn with the shock absorber
Dynamic connection.
It is two sections be threadedly coupled with the suspension assembly and second adjusting rod respectively that first adjusting rod, which has,
External screw thread, two sections externally threaded oppositely oriented.
The suspension assembly includes the first hanger bracket and the second hanger bracket that are oppositely arranged and are connected, the first hanger bracket and
It is equipped with the adjusting part on second hanger bracket, set adjusting part passes through described on the first hanger bracket and the second hanger bracket
Shock absorber is connected with the moving platform.
The shock absorber is circumferentially distributed multiple in the inner side of the suspension assembly, and in two adjacent shock absorbers,
One of shock absorber is connected with the adjusting part set on first hanger bracket, another shock absorber and described second
The adjusting part connection set on hanger bracket.
Shock absorber line centered on the axis of the moving platform is evenly distributed around moving platform.
First hanger bracket has the first pillar, and second hanger bracket has second to be alignd with the first shore position
Pillar, the first pillar and the second pillar are connected by middle connector.
First pillar and second pillar with the middle connector be threadedly coupled, with allowing the in middle connector
The screwed hole that one pillar and the second pillar screw in.
First hanger bracket and second hanger bracket are hexagonal structure.
The adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness of the present invention, has the following advantages that：
1st, the vibration-isolating platform not only solves problem when conventional linear vibrating isolation system isolates low frequency or superlow frequency vibrating, keeps away
Exempt from using the shortcomings that active and semi- active control vibration isolator structure are complicated, manufacturing cost highly energy-consuming is high；
2nd, the vibration-isolating platform is in certain deformation range, using three shock-absorbing springs of upper end as positive stiffness elements and lower end
Three be only used as negative stiffness shock-absorbing spring element in parallel, can be achieved the vibration-isolating platform near its equilbrium position it is non-linear just
Degree；
3rd, the vibration-isolating platform can adjust the initial position of shock absorber by adjusting part, can to realize wide frequency domain vibration isolation
It is widely used in the precision instrument strict to vibration isolation requirement and equipment, there is good engineering practicability.
4th, while the vibration-isolating platform has higher support stiffness, also there is very low motion rigidity, static deformation amount
It is small, the low vibration isolating effect of dynamic intrinsic frequency.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the structural representation of vibration-isolating platform of the present invention；
Fig. 2 is the structural representation of the first hanger bracket；
Fig. 3 is the structural representation of the second hanger bracket；
Fig. 4 is the structural representation of suspension assembly；
Fig. 5 is the structural representation of vibrating isolation system；
Fig. 6 is the structural representation of moving platform；
Fig. 7 is the sectional view of adjusting part；
In figure mark for：
1st, middle connector；2nd, shock absorber；21st, pin-and-hole；22nd, shock-absorbing spring；3rd, moving platform；31st, loading plate；32nd, pedestal；
33rd, hinge；34th, pin-and-hole；35th, bolt；4th, the first hanger bracket；41st, the first pillar；42nd, studs；43rd, V-arrangement connector；44、
Guide holder；5th, the second hanger bracket；51st, the second pillar；52nd, studs；53rd, V-arrangement connector；54th, guide holder；6th, regulation group
Part；61st, the first adjusting rod；62nd, the second adjusting rod；63rd, hinge；7th, bearing pin；
Embodiment
Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of
Explanation, it is therefore an objective to help those skilled in the art to have more complete, accurate and deep reason to design of the invention, technical scheme
Solution, and contribute to its implementation.
As shown in Figures 1 to 7, the invention provides a kind of adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness, including move
Platform 3, suspension assembly, shock absorber and adjusting part 6, shock absorber are connected with moving platform 3, and adjusting part 6 is and suspension assembly
Connected with shock absorber, and for adjusting the initial position of shock absorber.The adjustable quasi- zero stiffness vibration isolation of positive negative stiffness of the present invention is put down
Platform, certain structural parameters are set, the vibration-isolating platform can be achieved can realize near quasi- zero stiffness and equilbrium position in equilbrium position
Non-linear rigidity, can solve conventional linear vibrating isolation system isolation low frequency or problem during superlow frequency vibrating；Rigidity easy can be adjusted
Section, suitable for wide frequency domain vibration isolation, has good engineering adaptability；While with higher support stiffness, also have very low
Motion rigidity, static deformation amount is small, and dynamic intrinsic frequency is low, and vibration isolating effect is good；, can by rigidity, the flexible modulation of damping
Solves the contradiction of the intrinsic contradictions, i.e. low-frequency vibration transport and dither attenuation rate that restrict traditional vibrating isolation system.The present invention
The vibration-isolating platform using positive and negative Stiffness of proposition is a kind of new vibration damping and vibration isolation platform, has good economy and practicality
Property, every field can be promoted.
Specifically, as shown in figure 1, one end of shock absorber is rotatablely connected with moving platform 3,6 turns of the other end and adjusting part
Dynamic connection, the axis of shock absorber both ends rotating joint it is parallel and with the axis perpendicular of moving platform 3.The center line of shock absorber
With the axis perpendicular of shock absorber both ends rotating joint, adjusting part 6 is the center line and horizontal plane for adjusting shock absorber
Between initial angle, that is, change shock absorber initial position, so as to change the initial pre- of the shock-absorbing spring having on shock absorber
Clamp force.
As shown in Figure 1 and Figure 4, suspension assembly includes the first hanger bracket 4 and the second hanger bracket for being oppositely arranged and being connected
5, it is equipped with adjusting part 6 on the first hanger bracket 4 and the second hanger bracket 5, it is set on the first hanger bracket 4 and the second hanger bracket 5
Adjusting part 6 is connected by shock absorber with moving platform 3.First hanger bracket 4 is connected to form a kind of framework knot with the second hanger bracket 5
The suspension assembly of structure, inner chamber are used to accommodate shock absorber and moving platform 3.First hanger bracket 4 and the second hanger bracket 5 are by positioned at both
Between middle connector 1 realize connection, form integrative-structure, as preferable, middle connector 1 is in shock absorber and moving platform 3
Outside is circumferentially arranged multiple, improves the first hanger bracket 4 and the connection reliability of the second hanger bracket 5.
As shown in Figure 1 and Figure 7, as preferable, it is first adjusting of be threadedly coupled that adjusting part 6, which is included with suspension assembly,
Bar 61 and be threadedly coupled and the second adjusting rod 62 of linear reciprocating motion can be made with respect to suspension assembly with the first adjusting rod 61, the
One adjusting rod 61, which is used to produce, makes the second adjusting rod 62 do the driving force of linear reciprocating motion along its length, and suspension assembly is simultaneously
Guide effect is played to the second adjusting rod 62, it is ensured that the second adjusting rod 62 moves along a straight line.Shock absorber one end hanger and moving platform 3
The end of rotation connection, the hanger of the other end and the second adjusting rod 62 is rotatablely connected, the axis of shock absorber both ends rotating joint
It is parallel and perpendicular with the direction of motion of the second adjusting rod 62.When needing to adjust the initial position of shock absorber, pass through rotation
First adjusting rod 61, the second adjusting rod 62 is set to move along a straight line, the second adjusting rod 62 can compress or stretch shock absorber, and second adjusts
Angle between the length direction of pole 62 and the center line of shock absorber is adjusted, so as to change the initial of shock-absorbing spring
Pretightning force.
As shown in Figure 1 and Figure 7, the outer surface of the first adjusting rod 61 has is respectively with suspension assembly and the second adjusting rod 62
Two sections of external screw threads of threaded connection, this two sections externally threaded oppositely oriented, is accordingly provided with the inside of the second adjusting rod 62 and allows the
The internal thread hole of one adjusting rod 61 insertion.Shock absorber adjusts vibration damping between adjusting part 6 and moving platform 3, in adjusting part 6
When device stretches, the first adjusting rod 61 and the second adjusting rod 62 are the direction motion for being directed away from moving platform 3；Adjusted in adjusting part 6
When vibration-damper compresses, the first adjusting rod 61 and the second adjusting rod 62 are to be moved towards the direction close to moving platform 3.
As preferable, as shown in figure 1, shock absorber be uniformly distributed circumferentially on the inside of suspension assembly it is multiple, and in phase
In two adjacent shock absorbers, one of shock absorber and 62 turns of the second adjusting rod of the adjusting part 6 set on the first hanger bracket 4
Dynamic connection, the second adjusting rod 62 of adjusting part 6 of another shock absorber with being set on the second hanger bracket 5 are rotatablely connected, that is, subtracted
Shake device quantity it is equal with the quantity of adjusting part 6, each shock absorber is connected with an adjusting part 6 respectively, and the first hanger bracket 4
With the adjusting part 6 that equivalent amount is set on the second hanger bracket 5, the adjusting part 6 on the first hanger bracket 4 and the second hanger bracket 5
And to be staggeredly arranged.In state shown in Fig. 1, shock absorber line centered on the axis of moving platform 3 is in uniform around moving platform 3
Distribution, adjusting part 6 on the first hanger bracket 4 and the second hanger bracket 5 and centered on the axis of moving platform 3 line in moving platform
It is evenly distributed around 3.In the present embodiment, as shown in figure 1, shock absorber sets six altogether, the first hanger bracket 4 and second is hung
Three adjusting parts 6 are set respectively on frame 5.
As shown in Figure 4 and Figure 5, one end of shock absorber passes through bearing pin and 63 turns of hinge set by the end of the second adjusting rod 62
Dynamic connection, the other end are rotatablely connected by bearing pin and hinge 33 set on moving platform 3.Moving platform 3 is including loading plate 31 and admittedly
Surely the pedestal 32 being arranged at the bottom center of loading plate 31, pedestal 32 are located at the center of all shock absorbers, and hinge 33 is in pedestal
Circumferentially it is evenly arranged multiple on 32, each hinge 33 is connected with a shock absorber respectively.
As shown in Figure 1 and Figure 4, the first hanger bracket 4 and the second hanger bracket 5 be by multiple studs, V-arrangement connector and
The guide holder of arrowhead form is formed by connecting and is inner hollow, circumferentially closed hexagonal structure.
Specifically, as shown in Fig. 2 the studs 42 of the first hanger bracket 4 be located at guide holder 44 and V-arrangement connector 43 it
Between, studs 42 is to be threadedly coupled with guide holder 44 and V-arrangement connector 43, and the both ends outer surface of studs 42 has respectively
There is one section of external screw thread, and the both ends of studs 42 are externally threaded oppositely oriented, accordingly in guide holder 44 and V-arrangement connector 43
Provided with the internal thread hole for allowing the thread head of studs 42 to screw in.The angle of V-arrangement connector 43 is preferably 120 degree, V-arrangement connection
The both ends of part 43 have an internal thread hole respectively, and the angle between the axis of two internal thread holes is 120 degree, and two interior spiral shells
The thread rotary orientation of pit is on the contrary, be respectively used to be connected with a studs 42.The guide holder 44 of arrowhead form has three ends
Portion, wherein two relative ends have an internal thread hole respectively, the angle between the axis of the two internal thread holes is also
120 degree, and the thread rotary orientation of two internal thread holes is on the contrary, be respectively used to be connected with a studs 42.In the present embodiment,
Guide holder 44, studs 42 and the V-arrangement connector 43 of first hanger bracket 4 are respectively provided with three, each one end of studs 42 with
Guide holder 44 is threadedly coupled, and the other end is threadedly coupled with V-arrangement connector 43, forms the first hanger bracket 4 of regular hexagon.
As shown in figure 3, the structure of the second hanger bracket 5 and the structure of the first hanger bracket 4 are substantially similar, the second hanger bracket 5
For studs 52 between guide holder 54 and V-arrangement connector 53, the structure of guide holder 54 is identical with the structure of guide holder 44, double
The structure of header stud 52 is identical with the structure of studs 42, the structure of V-arrangement connector 53 and the structure phase of V-arrangement connector 43
Together.Studs 52 is to be threadedly coupled with guide holder 54 and V-arrangement connector 53, and the both ends outer surface of studs 52 has respectively
There is one section of external screw thread, and the both ends of studs 52 are externally threaded oppositely oriented, accordingly in guide holder 54 and V-arrangement connector 53
Provided with the internal thread hole for allowing the thread head of studs 52 to screw in.The angle of V-arrangement connector 53 is preferably 120 degree, V-arrangement connection
The both ends of part 53 have an internal thread hole respectively, and the angle between the axis of two internal thread holes is 120 degree, and two interior spiral shells
The thread rotary orientation of pit is on the contrary, be respectively used to be connected with a studs 52.The guide holder 54 of arrowhead form has three ends
Portion, wherein two relative ends have an internal thread hole respectively, the angle between the axis of the two internal thread holes is also
120 degree, and the thread rotary orientation of two internal thread holes is on the contrary, be respectively used to be connected with a studs 52.In the present embodiment,
Guide holder 54, studs 52 and the V-arrangement connector 53 of second hanger bracket 5 are respectively provided with three, each one end of studs 52 with
Guide holder 54 is threadedly coupled, and the other end is threadedly coupled with V-arrangement connector 53, forms the second hanger bracket 5 of regular hexagon.
As shown in Fig. 2 the first hanger bracket 4 also includes the first pillar 41 being vertically installed on each guide holder 44, this first
The axis perpendicular of the length direction of pillar 41 and the internal thread hole of the first adjusting rod 61 and guide holder 44, the first pillar 41 are simultaneously
Stretched out at towards the position of the second hanger bracket 5.In the present embodiment, guide holder 44 sets three, then the first pillar 41 is also set
Put parallel three, three the first pillars 41 and to be uniformly distributed.As shown in figure 3, the second hanger bracket 5 also includes being vertically arranged
In on each guide holder 54 and with the second pillar 51 of the aligned in position of the first pillar 41, the length direction of second pillar 51 and first
The axis perpendicular of the internal thread hole of adjusting rod 61 and guide holder 54, the second pillar 51 are simultaneously in place for the institute of the first hanger bracket of direction 4
Place is put to stretch out.In the present embodiment, guide holder 54 sets three, then the second pillar 51 is also provided with parallel three, three the
Two pillars 51 and to be uniformly distributed.As shown in Figure 1 and Figure 4, the first pillar 41 and the second pillar 51 are connected by middle connector 1,
First pillar 41 and the second pillar 51 and with middle connector 1 be threadedly coupled, with allowing the first pillar 41 and the in middle connector 1
The screwed hole of two pillars 51 insertion, is threadedly coupled easy disassembly.
As shown in fig. 7, adjusting part 6 is arranged on guide holder 44,54, guide holder 44,54 has three bar portions, wherein phase
To two bar portions in there is an internal thread hole being connected with studs respectively, the 3rd among the two bar portions
One is provided with bar portion and with the first adjusting rod 61 is the internal thread hole that is threadedly coupled and one allows the leading of the second adjusting rod 62 insertion
Xiang Kong, pilot hole are connected with internal thread hole, it is ensured that the first adjusting rod 61 can be imported in pilot hole and is connected with the second adjusting rod 62.
Pilot hole plays guide effect to the second adjusting rod 62, and the second adjusting rod 62 does linear reciprocating motion in pilot hole, and second adjusts
In the one end of pole 62 insertion pilot hole, the other end stretches out pilot hole and is located at the inside of the first hanger bracket 4 or the second hanger bracket 5,
Hinge 63 is arranged on the external part of the second adjusting rod 62.It is another inside the part insertion guide holder 44,54 of first adjusting rod 61
Part is outside guide holder 44,54.
First hanger bracket of said structure, the second hanger bracket, the major advantage of suspension assembly design are embodied in：1) facilitate whole
Regulation, the dismounting of individual vibration-isolating platform, regulation can expand the size of the platform vibration isolation object, weight range, flexibly dismantle energy
Platform is moved easily, is readily transported；2) structure design of whole platform, can easily produce series of products, be easy to this
Console module, producing in serial form.
The following detailed description of the quasi- zero stiffness for how realizing vibration-isolating platform, concretely comprise the following steps：
Step 1：Shock-absorbing spring (nonlinear spring) when moving platform 3 is reached equipoise by extraneous exciting force is calculated first
22 deformation quantity.
Step 2：When reaching equipoise according to put object shock-absorbing spring (nonlinear spring) 22 deformation quantity so as to
Adjusting and be arranged at the shock absorber pre compressed magnitude that the adjusting part 6 on the first hanger bracket 4 connects makes the pretightning force edge of the shock absorber
Shock absorber points to lower spring end lid.Shock-absorbing spring 22 when moving platform 3 moves downward on the shock absorber will produce positive rigidity.
Step 3：The shock-absorbing spring for adjusting and being arranged at the shock absorber that the adjusting part 6 on the second hanger bracket 5 connects is (non-thread
Property spring) 22 deformation quantity, the pretightning force of shock absorber is pointed to lower end along shock absorber so as to adjust the shock absorber pre compressed magnitude.When
Shock-absorbing spring 22 when moving platform 3 moves downward on the shock absorber will produce negative stiffness.
Positive rigidity caused by the shock absorber being connected with the adjusting part 6 being arranged on the first hanger bracket 4 and with being arranged at
Negative stiffness caused by the shock absorber that adjusting part 6 on two hanger brackets 5 connects numerically is added can and realizes whole vibration damping
The global stiffness of system is zero, so as to realize the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness.
The present invention is exemplarily described above in association with accompanying drawing.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as employ the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress；Or not
It is improved, the above-mentioned design of the present invention and technical scheme are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (9)
1. the positive adjustable quasi- zero stiffness vibration-isolating platform of negative stiffness, it is characterised in that including：
Moving platform；
Suspension assembly；
Shock absorber, it is connected with moving platform；And
Adjusting part, it is connected with suspension assembly and shock absorber, and for adjusting the initial position of shock absorber；
Wherein, adjusting part includes being the first adjusting rod for being threadedly coupled with suspension assembly and is threaded connection with the first adjusting rod
And the second adjusting rod of linear reciprocating motion can be made with respect to suspension assembly, and the second adjusting rod is to be rotatablely connected with shock absorber, first
It is respectively two sections of external screw threads being threadedly coupled, two sections of externally threaded rotation direction phases with suspension assembly and the second adjusting rod that adjusting rod, which has,
Instead, the inside of the second adjusting rod is provided with the internal thread hole for allowing the first adjusting rod to insert；
Suspension assembly includes the first hanger bracket and the second hanger bracket for being oppositely arranged and being connected, the first hanger bracket and the second suspension
Be equipped with adjusting part on frame, on the first hanger bracket and the second hanger bracket set adjusting part by shock absorber with it is described dynamic flat
Platform connects；
First hanger bracket has the first pillar, and the second hanger bracket has the second pillar to be alignd with the first shore position, first
Post and the second pillar are connected by middle connector, the first pillar and the second pillar with middle connector to be threadedly coupled, middle connector
It is interior that there is the screwed hole for allowing the first pillar and the second pillar to screw in.
2. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 1, it is characterised in that the shock absorber
One end hanger is rotatablely connected with moving platform, and the end of the hanger of the other end and the second adjusting rod is rotatablely connected, and shock absorber both ends turn
The axis of dynamic tie point is parallel and perpendicular with the direction of motion of the second adjusting rod.
3. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 2, it is characterised in that in regulation vibration damping
During the initial position of device, by rotating the first adjusting rod, the second adjusting rod is set to move along a straight line, the compression of the second adjusting rod or stretching
Shock absorber, the angle between the length direction of the second adjusting rod and the center line of shock absorber are adjusted, so as to change vibration damping bullet
The initial pretightning force of spring.
4. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 1, it is characterised in that described first is outstanding
Hanger and the second hanger bracket are to be formed by connecting by the guide holder of multiple studs, V-arrangement connector and arrowhead form and are interior
Hollow, the circumferentially closed hexagonal structure in portion.
5. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 4, it is characterised in that the shock absorber
It is circumferentially distributed multiple in the inner side of the suspension assembly, and in two adjacent shock absorbers, one of shock absorber and institute
The adjusting part connection set on the first hanger bracket is stated, another shock absorber is described with being set on second hanger bracket
Adjusting part connects.
6. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 5, it is characterised in that the shock absorber
Line is evenly distributed around moving platform centered on the axis of the moving platform.
7. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 4, it is characterised in that described first is outstanding
For the studs of hanger between guide holder and V-arrangement connector, studs is that screw thread connects with guide holder and V-arrangement connector
Connect, the both ends outer surface of studs has that the both ends of external screw thread and studs are externally threaded oppositely oriented respectively, guide holder
The internal thread hole that the thread head of studs screws in is allowed with being provided with V-arrangement connector.
8. the adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness according to claim 7, it is characterised in that the V-arrangement connects
The angle of fitting is preferably 120 degree, and the both ends of V-arrangement connector have an internal thread hole, the axis of two internal thread holes respectively
Between angle be 120 degree, and the thread rotary orientation of two internal thread holes is on the contrary, be respectively used to be connected with a studs.
9. according to any described adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness of claim 4 to 8, it is characterised in that institute
The studs of the second hanger bracket is stated between guide holder and V-arrangement connector, studs and guide holder and V-arrangement connector are equal
For threaded connection, the both ends outer surface of studs has the externally threaded rotation direction phase in both ends of external screw thread and studs respectively
Instead, it is provided with guide holder and V-arrangement connector and allows the internal thread hole that the thread head of studs screws in.
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| CN201610545508.9A CN105972147B (en) | 2016-07-12 | 2016-07-12 | The adjustable quasi- zero stiffness vibration-isolating platform of positive negative stiffness |
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| EP3568607A4 (en) * | 2017-01-12 | 2020-10-14 | HRL Laboratories, LLC | Adjustable negative stiffness systems |
| CN107218343B (en) * | 2017-06-06 | 2019-05-17 | 上海卫星工程研究所 | Quasi-zero stiffness vibration isolators based on asymmetric compound material laminate |
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| CN108791743B (en) * | 2018-07-03 | 2019-06-14 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Quasi- zero stiffness formula, which subtracts, shakes water tank |
| CN110513432B (en) * | 2019-09-03 | 2021-08-10 | 武汉理工大学 | Double-nonlinear vibration isolation device |
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| CN112377549A (en) * | 2020-11-03 | 2021-02-19 | 同济大学 | Multi-direction quasi-zero rigidity vibration isolation platform |
| CN114251410B (en) * | 2021-11-18 | 2023-10-20 | 上海航天控制技术研究所 | Semi-active vibration reduction platform structure of inertial actuating mechanism based on magneto-rheological damper |
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