CN115523254A - Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator - Google Patents
Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator Download PDFInfo
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- CN115523254A CN115523254A CN202211163144.XA CN202211163144A CN115523254A CN 115523254 A CN115523254 A CN 115523254A CN 202211163144 A CN202211163144 A CN 202211163144A CN 115523254 A CN115523254 A CN 115523254A
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- 238000002955 isolation Methods 0.000 claims abstract description 34
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- 230000003068 static effect Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims description 25
- 238000012856 packing Methods 0.000 claims description 9
- 238000005253 cladding Methods 0.000 claims description 2
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
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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
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/063—Negative stiffness
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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
- F16F2230/0052—Physically guiding or influencing
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Abstract
The invention discloses a connecting rod type quasi-zero stiffness vibration isolator with wide stroke and high static load, which comprises: the vibration isolation mechanism comprises a supporting mechanism and a vibration isolation mechanism, wherein the supporting mechanism comprises a base plate, four upright guide rails are fixedly arranged on the top surface of the base plate, the four upright guide rails are connected with a platform center column in a sliding mode through a vibration isolation assembly, and an objective table is fixedly arranged at the top end of the platform center column; vibration isolation mechanism sets up between four stand guide rails, vibration isolation mechanism includes the down tube connecting piece, the one end rigid coupling that the objective table was kept away from with the platform center post in the top surface center department of down tube connecting piece, down tube connecting piece both ends symmetry is equipped with the optical axis subassembly, the optical axis subassembly includes long optical axis, the lateral wall center section of long optical axis articulates the one end that has the down tube, the other end of down tube is articulated with the tip of down tube connecting piece, the both ends of long optical axis articulate respectively has short optical axis, lie in articulated horizontal subassembly between two short optical axes with one side. The invention can realize higher static bearing capacity and has the capabilities of wide stroke, wide frequency and low frequency vibration isolation.
Description
Technical Field
The invention relates to the field of low-frequency vibration control, in particular to a connecting rod type quasi-zero stiffness vibration isolator with wide stroke and high static load.
Background
In engineering, vibration damping is a main means for dealing with vibration hazards, and is generally divided into active vibration damping and passive vibration damping. Active damping is the elimination or reduction of energy from a source of vibration considered at the beginning of the design. Passive damping is a remedial damping action taken after vibration occurs during operation of the structure.
Active damping is considered to be the most fundamental and effective method, but is expensive and most structures are subjected to uncontrollable vibrations (such as seismic excitations, atmospheric turbulence, wind and wave impacts, etc.), resulting in many cases in less than optimal damping. Therefore, the method is less applicable to common engineering equipment.
Compared with active vibration reduction, passive vibration reduction is widely applied to engineering vibration control and mainly comprises damping vibration absorption, dynamic vibration absorption, vibration isolation and the like. The damping vibration absorption is to install a damper on a vibration target structure or to increase the structural damping of the vibration target structure by adopting a method of adding a damping material, such as damping paint, a damping interlayer and the like, and the vibration energy of the structure is effectively attenuated by using damping energy consumption, so that the vibration amplitude of the target structure is reduced, and the damping effect of the damping on the vibration is particularly obvious near the resonant frequency of a system. Dynamic vibration absorption is to add a subsystem (dynamic vibration absorber) to a target structure, and reduce the vibration of the target structure by using an energy transfer mechanism caused by the resonance of the dynamic vibration absorber. When the natural frequency of the dynamic vibration absorber is matched with the excitation frequency, the additional springs and masses provide precise external excitation control force for the target structure, and a high vibration reduction effect can be achieved. The vibration isolation is generally to connect a subsystem in series between a vibration source and a target structure to reduce the influence of the excitation of the vibration source on the target structure and reduce or isolate the vibration transmission between the target structure and the outside.
In summary, the vibration reduction means in the engineering is mainly summarized as weakening or eliminating the vibration source in the active vibration reduction, improving the vibration resistance of the structure itself, avoiding the resonance region, and properly increasing the damping in the passive vibration reduction, dynamically absorbing vibration, taking vibration isolation measures, etc. The most common and easy-to-operate vibration damping means is vibration absorber and vibration isolator to absorb and isolate vibration of the vibration target. However, the traditional vibration absorption and isolation method is difficult to detect the effective vibration absorption frequency thereof to the low frequency and ultra-low frequency range. So that many low-frequency vibration problems in engineering cannot be effectively solved.
Disclosure of Invention
The invention aims to provide a connecting rod type quasi-zero stiffness vibration isolator with wide stroke and high static load, so as to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a connecting rod type quasi-zero stiffness vibration isolator with wide stroke and high static load, which comprises:
the supporting mechanism comprises a base plate, four upright guide rails are fixedly mounted on the top surface of the base plate, the four upright guide rails surround a square, the four upright guide rails are connected with a platform center column in a sliding mode through a damping assembly, and an objective table is fixedly mounted at the top end of the platform center column;
vibration isolation mechanism, vibration isolation mechanism set up in four between the stand guide rail, and be located the objective table below, vibration isolation mechanism includes the down tube connecting piece, the top surface center department of down tube connecting piece with the platform center post is kept away from the one end rigid coupling of objective table, down tube connecting piece both ends symmetry is equipped with the optical axis subassembly, the optical axis subassembly includes long optical axis, the lateral wall center section of long optical axis articulates the one end of down tube, the other end of down tube with the tip of down tube connecting piece is articulated, the both ends of long optical axis articulate respectively has short optical axis, lie in with two of one side articulated horizontal subassembly, two between the short optical axis horizontal subassembly symmetry sets up the both sides of down tube connecting piece.
Preferably, the subassembly that slowly shakes includes the support frame, the support frame fixed sleeve is established on the platform center post, four tip difference rigid couplings of support frame have linear bearing, four linear bearing sliding connection respectively is four on the stand guide rail, and four fixed cover is equipped with the location clamp respectively on the stand guide rail, the location clamp is located the linear bearing below, just the location clamp with the rigid coupling has the load spring between the linear bearing, the load spring overlaps and establishes on the stand guide rail.
Preferably, horizontal component includes the horizontal spring guide rail, horizontal spring guide rail both ends respectively through first guide rail supporting seat fixed mounting in on the bed plate, sliding connection has the bi-pass to connect on the horizontal spring guide rail, just the both ends that the bi-pass connects respectively with two the one end that the short optical axis is relative is articulated, the cover is equipped with horizontal spring on the horizontal spring guide rail, the horizontal spring rigid coupling is in the bi-pass connects and is close to the down tube connecting piece between the first guide rail supporting seat.
Preferably, the symmetry rigid coupling has a rail joint on the long optical axis, two rail joint is located respectively the down tube both sides, sliding connection has the horizontal bearing guide rail on the rail joint, horizontal bearing guide rail both ends all run through rail joint, horizontal bearing guide rail both ends respectively through second guide rail supporting seat fixed mounting in on the bed plate, the horizontal bearing guide rail is kept away from the tip fixed mounting of down tube connecting piece has horizontal bearing.
Preferably, the two ends of the long optical axis are hinged to the two short optical axes through optical axis hinges respectively.
Preferably, the bed plate is square, the equal rigid coupling of four lateral walls of bed plate has the packing sheet, four the rigid coupling has last bedplate between the top of packing sheet, go up the bedplate with the position that the objective table corresponds is seted up and is greater than the through-hole of objective table size, and four the top of stand guide rail with the bottom surface rigid coupling of last bedplate.
Preferably, the base plate with all the rigid coupling has the support gusset plate between four sides of upper seat board, four the support gusset plate is located four respectively the packing plate is inboard, and four the support gusset plate cladding is four the stand guide rail and with four there is the clearance between the stand guide rail.
The invention discloses the following technical effects:
the vibration damping component is arranged on the platform center column in the vertical direction, and the negative stiffness of the horizontal component is counteracted by the positive stiffness of the vibration damping component, so that the quasi-zero stiffness design is realized. The quasi-zero stiffness vibration isolator overcomes the defect that the traditional linear vibration isolator cannot give consideration to both low vibration isolation initial frequency and higher static bearing capacity, and realizes the dynamic characteristics of high static stiffness and low dynamic stiffness.
The negative stiffness is introduced through the delicate design of the long optical axis, the short optical axis and the horizontal component structure, so that the vibration isolator has higher static stiffness and lower dynamic stiffness, and simultaneously meets the requirements of high static bearing capacity and dynamic low-frequency vibration isolation; in addition, the vibration isolator has the advantages of simple integral structure, convenient part processing, low cost of raw materials and no energy consumption of the actuator, and provides a new effective, economic and environment-friendly scheme for low-frequency vibration isolation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a perspective view of the external structure of the present invention;
FIG. 2 is a perspective view of the internal structure of the present invention;
FIG. 3 is a perspective view of the vibration isolation mechanism of the present invention;
wherein, 1, an object stage; 2. an upper seat plate; 3. packaging plates; 4. supporting a reinforcing plate; 5. a platform center post; 6. a support frame; 7. a linear bearing; 8. a load spring; 9. a base plate; 10. positioning a hoop; 11. a column guide rail; 12. a diagonal bar connection; 13. a diagonal bar; 14. a rail joint; 15. an optical axis hinge; 16. a first guide rail support seat; 17. a long optical axis; 18. a horizontal spring guide; 19. a two-way joint; 20. a horizontal spring; 21. a horizontal bearing guide rail; 22. a short optical axis; 23. a horizontal bearing; 24. and a second guide rail support seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-3, the invention provides a wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator, which comprises:
the supporting mechanism comprises a base plate 9, four upright guide rails 11 are fixedly mounted on the top surface of the base plate 9, the four upright guide rails 11 surround a square, the four upright guide rails 11 are connected with a platform central column 5 in a sliding mode through a vibration damping assembly, and an objective table 1 is fixedly mounted at the top end of the platform central column 5;
vibration isolation mechanism, vibration isolation mechanism sets up between four stand guide rails 11, and be located objective table 1 below, vibration isolation mechanism includes down tube connecting piece 12, the one end rigid coupling that objective table 1 was kept away from with platform center post 5 in top surface center department of down tube connecting piece 12, 12 both ends symmetry of down tube connecting piece is equipped with the optical axis subassembly, the optical axis subassembly includes long optical axis 17, the lateral wall center section of long optical axis 17 articulates the one end that has down tube 13, the other end of down tube 13 is articulated with the tip of down tube connecting piece 12, the both ends of long optical axis 17 articulate respectively has short optical axis 22, lie in articulated horizontal subassembly between two short optical axis 22 with one side, two horizontal subassembly symmetries set up the both sides at down tube connecting piece 12.
The vibration damping component is arranged on the platform 1 through two symmetrical optical axis component structures, can provide negative rigidity in the vertical direction, is arranged on the platform central column 5 in the vertical direction, and can counteract the negative rigidity of the horizontal component by utilizing self positive rigidity, so that the quasi-zero rigidity design is realized. The quasi-zero stiffness vibration isolator overcomes the defect that the traditional linear vibration isolator cannot give consideration to both low vibration isolation initial frequency and higher static bearing capacity, and realizes the dynamic characteristics of high static stiffness and low dynamic stiffness.
The negative stiffness is introduced through the delicate design of the long optical axis 17, the short optical axis 22 and the horizontal component structure, so that the vibration isolator has higher static stiffness and lower dynamic stiffness, and simultaneously meets the requirements of high static bearing capacity and dynamic low-frequency vibration isolation; in addition, the vibration isolator has the advantages of simple integral structure, convenient part processing, low cost of raw materials and no energy consumption of an actuator, and provides a new scheme which is effective, economic and environment-friendly for low-frequency vibration isolation.
Further optimization scheme, the subassembly that slowly shakes includes support frame 6, and 6 fixed sleeves of support frame are established on platform center post 5, and four tip difference rigid couplings of support frame 6 have linear bearing 7, and four linear bearing 7 are sliding connection respectively on four stand guide rails 11, and fix respectively on four stand guide rails 11 and be equipped with location clamp 10, and location clamp 10 is located linear bearing 7 below, and the rigid coupling has load spring 8 between location clamp 10 and the linear bearing 7, and load spring 8 covers and establishes on stand guide rail 11.
The support frame 6 moves downwards to drive the four linear bearings 7 to slide downwards on the four upright guide rails 11 respectively, so that the load spring 8 is compressed.
Further optimize the scheme, horizontal assembly includes horizontal spring guide 18, and horizontal spring guide 18 both ends are respectively through first guide rail supporting seat 16 fixed mounting on bed plate 9, and sliding connection has bi-pass joint 19 on horizontal spring guide 18, and bi-pass joint 19's both ends are articulated with two short optical axis 22 relative one ends respectively, and the cover is equipped with horizontal spring 20 on horizontal spring guide 18, and horizontal spring 20 rigid coupling is between bi-pass joint 19 and the first guide rail supporting seat 16 that is close to down tube connecting piece 12.
The two-way joint 19 is used to connect two short optical axes 22, and the horizontal spring 20 is compressed when the two-way joint 19 slides on the horizontal spring guide 18.
Further optimize the scheme, the symmetry rigid coupling has rail joints 14 on the long optical axis 17, and two rail joints 14 are located down tube 13 both sides respectively, and sliding connection has horizontal bearing guide rail 21 on rail joint 14, and rail joint 14 is all run through at horizontal bearing guide rail 21 both ends, and horizontal bearing guide rail 21 both ends are respectively through second guide rail supporting seat 24 fixed mounting on bed plate 9, and the end fixed mounting that the down tube connecting piece 12 was kept away from to horizontal bearing guide rail 21 has horizontal bearing 23.
When the short optical axis 22 is displaced, the rail joint 14 slides on the horizontal bearing rail 21 to move the long optical axis 17.
In a further optimized scheme, two ends of the long optical axis 17 are respectively hinged with two short optical axes 22 through optical axis hinges 15.
Further optimize the scheme, bed plate 9 is square, and the equal rigid coupling of four lateral walls of bed plate 9 has packing plate 3, and the rigid coupling has last bedplate 2 between the top of four packing plate 3, goes up bedplate 2 and sets up the through-hole that is greater than objective table 1 size with the position that objective table 1 corresponds, and the bottom surface rigid coupling of the top of four stand guide rails 11 and last bed plate 2.
According to the further optimization scheme, the supporting and reinforcing plates 4 are fixedly connected between the four side edges of the base plate 9 and the upper base plate 2, the four supporting and reinforcing plates 4 are respectively positioned on the inner sides of the four packing plates 3, and the four supporting and reinforcing plates 4 cover the four upright guide rails 11 and have gaps with the four upright guide rails 11.
The working principle is as follows: will be placed on objective table 1 by the vibration isolation heavy object, receive the influence by vibration isolation heavy object self gravity, platform center post 5 and support frame 6 move down in the vertical direction, the compression is located the load spring 8 on four stand guide rails 11 of isolator, and when the isolator was in static balance state, down-pressure that down pole 13 received support frame 6 was in the horizontal position, and then made long optical axis 17 and short optical axis 22, formed the rectangle shape at the horizontal position, then horizontal spring 20 was in the biggest compression state. Theoretical calculation is carried out according to the geometric relationship of the structure, so that the whole vibration isolator has higher static rigidity, namely higher static bearing capacity; when the vibration isolation heavy object vibrates due to disturbance, the horizontal spring 20 extends, the joint of the two ends of the spring is pressed in the y direction, the inclined rod 13 and the short optical axis 22 generate displacement, and the two long optical axes 17 are driven to move oppositely, so that the object stage 1 moves upwards (downwards). Theoretical calculation is carried out according to the geometrical relationship before and after vibration, and at the moment, the whole vibration isolator has extremely low dynamic stiffness, namely the vibration isolation initial frequency is low, so that low-frequency and ultralow-frequency vibration isolation is realized. Meanwhile, by controlling the lengths of the long optical axis 17 and the short optical axis 22, the quasi-zero stiffness range can be controlled, the vibration isolation frequency is greatly widened, and the wide-stroke low-frequency vibration isolation effect is realized. According to different bearing articles, the spring with larger rigidity is selected, and the requirement of high bearing under low-frequency vibration isolation of the vibration isolator is met.
The implementation mode is as follows: the object to be isolated is placed on the object stage 1, and the vibration isolator base plate 9 is placed on a vibration source or a foundation. When the system is disturbed to vibrate, the horizontal spring 20 of the vibration isolator extends, and the short optical axis 22 drives the long optical axis to move oppositely, so as to drive the object stage 1 to move up and down. The horizontal spring 20 provides negative stiffness for the vertical direction, and the negative stiffness is offset with the positive stiffness provided by the four load springs 8 in the vertical direction of the vibration isolator, so that the quasi-zero stiffness of the vibration isolator is realized, and the vibration isolator has high static and low dynamic characteristics.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (7)
1. The utility model provides a wide stroke, high dead load connecting rod formula quasi-zero rigidity isolator which characterized in that includes:
the supporting mechanism comprises a base plate (9), four upright guide rails (11) are fixedly mounted on the top surface of the base plate (9), the four upright guide rails (11) surround to form a square, the four upright guide rails (11) are connected with a platform center column (5) in a sliding mode through a vibration damping assembly, and an objective table (1) is fixedly mounted at the top end of the platform center column (5);
vibration isolation mechanism, vibration isolation mechanism set up in four between stand guide rail (11), and be located objective table (1) below, vibration isolation mechanism includes down tube connecting piece (12), the top surface center department of down tube connecting piece (12) with platform center post (5) are kept away from the one end rigid coupling of objective table (1), down tube connecting piece (12) both ends symmetry is equipped with the optical axis subassembly, the optical axis subassembly includes long optical axis (17), the lateral wall center section of long optical axis (17) articulates the one end of down tube (13), the other end of down tube (13) with the tip of down tube connecting piece (12) is articulated, the both ends of long optical axis (17) articulate respectively has short optical axis (22), is located two with one side articulated horizontal subassembly between short optical axis (22), two horizontal subassembly symmetry sets up the both sides of down tube connecting piece (12).
2. The wide-stroke high-static-load connecting-rod type quasi-zero stiffness vibration isolator according to claim 1, characterized in that: the slow vibration subassembly includes support frame (6), support frame (6) fixed cover is established on platform center post (5), four tip difference rigid couplings of support frame (6) have linear bearing (7), four linear bearing (7) sliding connection is four respectively on stand guide rail (11), and four fixed cover is equipped with location clamp (10) on stand guide rail (11) respectively, location clamp (10) are located linear bearing (7) below, just location clamp (10) with the rigid coupling has load spring (8) between linear bearing (7), load spring (8) cover is established on stand guide rail (11).
3. The wide stroke, high static load link quasi-zero stiffness vibration isolator of claim 1 wherein: horizontal assembly includes horizontal spring guide rail (18), horizontal spring guide rail (18) both ends respectively through first guide rail supporting seat (16) fixed mounting in on bed plate (9), sliding connection has bi-pass joint (19) on horizontal spring guide rail (18), just the both ends of bi-pass joint (19) respectively with two short optical axis (22) relative one end is articulated, the cover is equipped with horizontal spring (20) on horizontal spring guide rail (18), horizontal spring (20) rigid coupling is in bi-pass joint (19) and being close to down tube connecting piece (12) between first guide rail supporting seat (16).
4. The wide stroke, high static load link quasi-zero stiffness vibration isolator of claim 3 wherein: the symmetry rigid coupling has rail joint (14), two on long optical axis (17) rail joint (14) are located respectively down tube (13) both sides, sliding connection has horizontal bearing guide rail (21) on rail joint (14), horizontal bearing guide rail (21) both ends all run through rail joint (14), horizontal bearing guide rail (21) both ends respectively through second guide rail supporting seat (24) fixed mounting in on bed plate (9), horizontal bearing guide rail (21) are kept away from the tip fixed mounting of down tube connecting piece (12) has horizontal bearing (23).
5. The wide stroke, high static load link quasi-zero stiffness vibration isolator of claim 1 wherein: two ends of the long optical axis (17) are respectively hinged with the two short optical axes (22) through optical axis hinges (15).
6. The wide stroke, high static load link quasi-zero stiffness vibration isolator of claim 1 wherein: the utility model discloses a novel base plate, including base plate (9), bedplate (2) and object table (1), bedplate (9) is square, the equal rigid coupling of four lateral walls of base plate (9) has packing plate (3), four the rigid coupling has last bedplate (2) between the top of packing plate (3), go up bedplate (2) with the position that object table (1) corresponds has been seted up and is greater than the through-hole of object table (1) size, and four the top of stand guide rail (11) with the bottom surface rigid coupling of last bedplate (2).
7. The wide stroke, high static load link quasi-zero stiffness vibration isolator of claim 6 wherein: the base plate (9) with all rigid coupling have support gusset plate (4) between four sides of upper seat board (2), four support gusset plate (4) are located four respectively packing plate (3) are inboard, and four support gusset plate (4) cladding is four stand guide rail (11) and with four have the clearance between stand guide rail (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211163144.XA CN115523254A (en) | 2022-09-23 | 2022-09-23 | Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211163144.XA CN115523254A (en) | 2022-09-23 | 2022-09-23 | Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator |
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| CN115523254A true CN115523254A (en) | 2022-12-27 |
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| CN202211163144.XA Pending CN115523254A (en) | 2022-09-23 | 2022-09-23 | Wide-stroke high-static-load connecting rod type quasi-zero stiffness vibration isolator |
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| CN106763466A (en) * | 2015-11-21 | 2017-05-31 | 北京工业大学 | A kind of novel positive and negative Stiffness low frequency vibration isolation mechanism |
| CN110388408A (en) * | 2019-08-30 | 2019-10-29 | 国网湖南省电力有限公司 | A kind of negative stiffness can harmonize zero stiffness isolation mounting and its application method |
| CN111927912A (en) * | 2020-07-15 | 2020-11-13 | 江苏大学 | Quasi-zero rigidity vertical vibration isolator capable of realizing balance position adjustment |
| CN112963478A (en) * | 2021-03-26 | 2021-06-15 | 北京工业大学 | Tunable quasi-zero-stiffness vibration isolation device for buckling spring |
| US20210246964A1 (en) * | 2020-12-28 | 2021-08-12 | Harbin Engineering University | Magnetic Suspension Type Quasi-Zero Stiffness Electromagnetic Vibration Isolator with Active Negative Stiffness |
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2022
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