CN117287475A - Low-frequency vibration isolation device and method based on lever mechanism - Google Patents

Low-frequency vibration isolation device and method based on lever mechanism Download PDF

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Publication number
CN117287475A
CN117287475A CN202311278786.9A CN202311278786A CN117287475A CN 117287475 A CN117287475 A CN 117287475A CN 202311278786 A CN202311278786 A CN 202311278786A CN 117287475 A CN117287475 A CN 117287475A
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CN
China
Prior art keywords
rod piece
vibration isolation
frequency vibration
rod
lever mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311278786.9A
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Chinese (zh)
Inventor
史孝杰
李蕾
王梅
王少伟
刘学峰
江秋生
王鑫
刘振
李宁
吴杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongying Yellow River Delta Modern Agriculture Research Center
Shandong Academy of Agricultural Machinery Sciences
Original Assignee
Dongying Yellow River Delta Modern Agriculture Research Center
Shandong Academy of Agricultural Machinery Sciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongying Yellow River Delta Modern Agriculture Research Center, Shandong Academy of Agricultural Machinery Sciences filed Critical Dongying Yellow River Delta Modern Agriculture Research Center
Priority to CN202311278786.9A priority Critical patent/CN117287475A/en
Publication of CN117287475A publication Critical patent/CN117287475A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • 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
    • 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
    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses a low-frequency vibration isolation device and a method based on a lever mechanism, which belong to the technical field of mechanical vibration and noise control and comprise a base and a bearing plate which are arranged in parallel, wherein the lever mechanism and a vibration isolation assembly are arranged between the base and the bearing plate; the lever mechanism comprises a sliding rod piece, a first rod piece and a second rod piece, wherein one end of the sliding rod piece is fixedly provided with an inertial element, and the other end of the sliding rod piece is provided with a sliding groove; the first rod piece is connected between the sliding rod piece and the base, the second rod piece is connected to the bottom of the bearing plate, the bottom of the second rod piece is hinged to the connecting shaft, and the connecting shaft can slide in the sliding groove.

Description

Low-frequency vibration isolation device and method based on lever mechanism
Technical Field
The invention belongs to the technical field of mechanical vibration and noise control, and particularly relates to a low-frequency vibration isolation device and method based on a lever mechanism.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The precision instrument often encounters vibration in the use process, the vibration can influence the functions of the precision instrument and equipment, the working performance of the precision instrument is reduced, and the fatigue and the abrasion of components can be aggravated, so that the service life of the instrument is shortened.
Vibration transmission between the outside and the instrument can be effectively isolated by the vibration isolation equipment, so that the measurement precision of the precise instrument is improved, and the precise instrument is protected. At present, linear vibration isolators are widely used for vibration isolation, but have poor low-frequency vibration isolation performance, small vibration isolation range and low response speed. Some researchers also put forward a nonlinear vibration isolator, but the existing nonlinear vibration isolator has a complex structure, high control difficulty and high cost.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a low-frequency vibration isolation device and a method based on a lever mechanism, which can obtain a large vibration isolation range and excellent vibration isolation performance through the nonlinear rigidity characteristic of a vibration isolation assembly, further improve the low-frequency vibration isolation performance by utilizing the lever mechanism, can achieve better stable balance under different loads, and can be widely applied to the vibration isolation field of precise instruments.
In order to achieve the above object, the present invention is realized by the following technical scheme:
in a first aspect, the invention provides a low-frequency vibration isolation device based on a lever mechanism, which comprises a base and a bearing plate which are arranged in parallel, wherein the lever mechanism and a vibration isolation assembly are arranged between the base and the bearing plate; the lever mechanism comprises a sliding rod piece, a first rod piece and a second rod piece, wherein one end of the sliding rod piece is fixedly provided with an inertial element, and the other end of the sliding rod piece is provided with a sliding groove; the first rod piece is connected between the sliding rod piece and the base, the second rod piece is connected to the bottom of the bearing plate, the bottom of the second rod piece is hinged to the connecting shaft, and the connecting shaft can slide in the sliding groove.
As a further technical scheme, the sliding rod piece can rotate around the joint with the tail end of the first rod piece; the first rod piece is fixedly connected with the base, the second rod piece is fixedly connected with the bearing plate, and the first rod piece and the second rod piece are always kept in a vertical state.
As a further technical scheme, the connection positions of the second rod piece and the bearing plate and the connection positions of the first rod piece and the base are staggered, and the two connection positions are horizontally arranged at intervals by a set distance.
As a further technical scheme, the vibration isolation assembly comprises a connecting rod mechanism, the top of the connecting rod mechanism is hinged with the bearing plate, and the bottom of the connecting rod mechanism is hinged with the base.
As a further technical scheme, the link mechanism is a scissor-fork structure, and the scissor-fork structure is provided with a transverse elastic element.
As a further technical scheme, the link mechanism comprises two cross hinged third bars, two ends of each third bar are hinged with the fourth bars, the fourth bars connected to the upper ends of the third bars are hinged with the bearing plate, and the fourth bars connected to the lower ends of the third bars are hinged with the base.
As a further technical scheme, an elastic element is connected between the lower end parts of the two third rod pieces and the hinge point of the fourth rod piece.
As a further technical solution, the inertial element is a mass block.
As a further technical scheme, at least two vibration isolation assemblies are arranged, at least one lever mechanism is arranged, and the vibration isolation assemblies are arranged on two sides of the lever mechanism.
In a second aspect, the present invention also provides a vibration isolation method of the low-frequency vibration isolation device as described above, which is characterized by comprising the following steps:
the bearing plate is used as a load platform for bearing the instrument, when the base is vibrated in the vertical direction, the elastic element deforms to generate opposite restoring force in the horizontal direction, and the restoring force is used for resisting the vibration; the inertial element generates an acting force opposite to the vibration and amplifies the acting force through the lever mechanism, so that energy is dissipated to ensure the stability of the low-frequency vibration isolation device.
The beneficial effects of the invention are as follows:
according to the low-frequency vibration isolation device based on the lever mechanism, the lever mechanism and the vibration isolation assembly are arranged, through the arrangement of the inertial element of the lever mechanism, the inertial element can generate acting force opposite to vibration, the connecting shaft at the bottom of the second rod piece can slide in the sliding groove of the sliding rod piece, the mechanism is prevented from being blocked, and the mechanism can work normally. The invention can better inhibit external vibration, reduce the response time of the device and improve the low-frequency vibration isolation performance. The low-frequency vibration isolation device can achieve better stable balance under different loads, and also has good low-frequency vibration isolation effect.
According to the low-frequency vibration isolation device based on the lever mechanism, the inertia element connected with the free end of the lever mechanism can improve vibration isolation performance and vibration isolation bandwidth, and the vibration isolation bandwidth and performance can be conveniently adjusted by adjusting the lever ratio; the vibration isolation assembly has nonlinear rigidity, and can adjust the rigidity of the vibration isolation assembly by adjusting the initial installation angle, the length of the lever, the rigidity of the spring and the like, so that the vibration isolation assembly is suitable for different loads. Due to the nonlinear rigidity of the vibration isolation assembly, the vibration isolation assembly can enable the system to have lower natural frequency and wider vibration isolation range. The inertia element can reduce the amplitude of vibration and improve the vibration isolation effect; the lever mechanism can further amplify the action of the inertial element, improve the reaction speed of the system and reduce vibration in a shorter time.
The invention can reduce the resonance frequency of the system and improve the vibration isolation range by utilizing the combination of the lever mechanism and the inertia element; the vibration isolation requirements of different loads can be met by adjusting the weight of the free end of the lever, the lever ratio and other parameters. The mechanism has the advantages of simple structural design, good low-frequency control effect, low manufacturing cost and better application prospect.
According to the low-frequency vibration isolation device based on the lever mechanism, the installation positions of the first rod piece and the second rod piece on the sliding rod piece can be changed, so that the lever coefficient of the lever mechanism can be changed, the reaction force of the lever mechanism on the bearing plate can be changed by changing the mass of the inertia element, and the reaction time and vibration isolation performance of the low-frequency vibration isolation device for inhibiting vibration can be adjusted.
The low-frequency vibration isolation device based on the lever mechanism has nonlinear rigidity of the vibration isolation assembly, and has stability superior to that of a general linear passive vibration isolation device formed by directly utilizing elastic elements, so that better stable balance is achieved under different loads.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is an isometric view of a lever mechanism based low frequency vibration isolation apparatus of the present invention;
fig. 2 is a front view of the low frequency vibration isolation apparatus based on the lever mechanism of the present invention;
fig. 3 is a side view of the lever mechanism based low frequency vibration isolation apparatus of the present invention;
in the figure: the mutual spacing or size is exaggerated for showing the positions of all parts, and the schematic drawings are used only for illustration;
wherein: the device comprises a 1-base, a 2-connecting seat, a 3-connecting shaft, a 4-bearing plate, a 5-inertial element, a 6-sliding rod piece, a 7-first rod piece, an 8-lever mechanism, a 9-second rod piece, a 10-elastic element, an 11-vibration isolation assembly, a 12-third rod piece, a 13-connecting rod mechanism, a 14-fourth rod piece and a 15-chute.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As described in the background art, the low-frequency vibration isolation device based on the lever mechanism has the advantages that the low-frequency vibration isolation device based on the lever mechanism can achieve good stable balance under different loads, has good low-frequency vibration isolation effect and can be widely applied to the vibration isolation field of precise instruments.
In an exemplary embodiment of the present invention, as shown in fig. 1 to 3, a low frequency vibration isolation device based on a lever mechanism is provided, which includes a base 1, a carrier plate 4, a lever mechanism 8, and a vibration isolation assembly 11.
Wherein, base 1 and loading board 4 parallel arrangement, loading board 4 is located the base 1 directly over. The lever mechanism 8 and the vibration isolation assembly 11 are arranged between the base 1 and the bearing plate 4. The upper end of vibration isolation assembly 11 passes through connecting seat 2 to be connected in loading board 4 bottom, and the lower extreme of vibration isolation assembly 11 passes through connecting seat 2 to be connected at base 1 top. The upper end of the lever mechanism 8 is fixed at the bottom of the bearing plate 4 through a connecting seat, and the lower end of the lever mechanism 8 is fixed at the top of the base 1 through a connecting seat.
In this embodiment, the base 1 and the carrying plate 4 are rectangular flat structures with rounded corners, and the carrying plate 4 is used as a loading platform for carrying the instrument.
The low-frequency vibration isolation device comprises at least two vibration isolation assemblies 11 and a lever mechanism 8, wherein the two vibration isolation assemblies 11 are arranged on two sides of the lever mechanism 8, and the lever mechanism 8 is connected between the base 1 and the middle part of the bearing plate 4; in a preferred arrangement, the two vibration isolation assemblies 11 are symmetrically arranged on both sides of the lever mechanism 8.
The vibration isolation assembly 11 is a bionic mechanism and is used for supporting the instrument on the bearing plate 4. The vibration isolation assembly of the embodiment is of a bionic X structure, and is formed by matching an elastic element with a third rod piece and a fourth rod piece, and the pressure and the displacement in the numerical direction of the pressure are nonlinear through stress analysis, so that the vibration isolation assembly is of a structure with nonlinear rigidity. The stiffness characteristic of the vibration isolation assembly 11 in the low-frequency vibration isolation device is nonlinear stiffness, and the bearing capacity and stability of the vibration isolation assembly are superior to those of a general linear passive vibration isolation device formed by directly utilizing elastic elements. The lever mechanism 8 can further inhibit external vibration, reduce the response time of the device and improve the low-frequency vibration isolation performance. The low-frequency vibration isolation device can achieve better stable balance under different loads, has good low-frequency vibration isolation effect, and can be widely applied to the vibration isolation field of precise instruments.
Specifically, in the present embodiment, each lever mechanism 8 includes one connecting shaft 3, one inertial member 5, one slide bar 6, one first bar 7, one second bar 9. The inertia element 5 is fixed at one end of the sliding rod piece 6 through screw connection, and a chute 15 is arranged at the other end of the sliding rod piece 6.
One end of the first rod piece 7 is fixedly arranged in the middle of the sliding rod piece 6 through screw connection, the sliding rod piece 6 can rotate around the joint with the tail end of the first rod piece 7, and the other end of the first rod piece 7 is connected to a connecting seat in the middle of the base 1 through screw connection. The connecting seat is provided with a plurality of mounting holes, and screws penetrate through the mounting holes to connect the connecting seat with threaded holes of the base 1 or the bearing plate 4.
The connection position of the first rod 7 and the sliding rod 6 can be adjusted according to the actual running condition.
One end of the second rod piece 9 is connected to the connecting seat in the middle of the bearing plate 4 through a screw, the other end of the second rod piece 9 is hinged to the connecting shaft 3, and the connecting shaft 3 can slide in the sliding groove 15. The sliding rod 6 of this embodiment is a rectangular flat plate structure, and the chute 15 is a transverse guide slot.
The connection position of the second rod piece 9 and the bearing plate 4 and the connection position of the first rod piece 7 and the base 1 are staggered, and the two positions are horizontally arranged at a certain distance.
The first rod piece 7 is fixedly connected with the base 1 and cannot rotate; the second rod piece 9 is fixedly connected with the bearing plate 4 and cannot rotate; that is, the first and second bars 7 and 9 are always kept in a vertical state.
In this embodiment, the inertial element 5 is a mass.
Specifically, in the present embodiment, two vibration isolation assemblies 11 are provided, and the two vibration isolation assemblies 11 are arranged in bilateral symmetry.
In the present embodiment, the left-right direction in bilateral symmetry refers to the left-right direction in the horizontal direction of fig. 2, in reference to fig. 2; the front-rear direction refers to the direction perpendicular to the paper surface of fig. 2.
The vibration isolation assemblies 11 each include a linkage 13 and an elastic member 10. The top of the link mechanism 13 is hinged with the bearing plate 4 through the connecting seat 2, and the bottom of the link mechanism 13 is hinged with the base 1 through the connecting seat 2. The link mechanisms 13 are in a scissor-fork structure, and each link mechanism 13 comprises two third bars 12 and four fourth bars 14. The two third rod pieces 12 are in cross hinge connection, and a hinge point is positioned in the middle of the third rod pieces 12; both ends of the third rod members 12 are hinged with the fourth rod members 14, that is, four fourth rod members 14 are hinged with both ends of the two third rod members 12 one by one, and one end of each fourth rod member 14 is hinged with the bearing plate 4 or the base 1 through the connecting seat 2. The fourth rod 14 connected to the upper end of the third rod 12 is hinged with the bearing plate 4, and the fourth rod 14 connected to the lower end of the third rod 12 is hinged with the base 1.
The elastic element 10 is located at the lower half part of the link mechanism 13, the elastic element 10 is connected between the lower ends of the two third bars 12, and since the lower ends of the third bars 12 are also hinged with the fourth bars 14, the elastic element 10 is also connected between the upper ends of the two lower fourth bars 14, and the elastic element 10 is connected between the lower ends of the two third bars 12 and the hinge point of the lower fourth bars 14. In this embodiment, the elastic element 10 is a spring, and two ends of the elastic element 10 are connected to a screw between the lower end of the third rod 12 and the lower fourth rod 14.
When the base 1 is subjected to vertical vibrations, the displacement of the carrier plate 4 is converted into vertical and horizontal displacements, and energy is dissipated by deformation of the elastic element 10, movement of the lever mechanism 8. Therefore, when the base 1 is displaced, the relationship between the deformation of the elastic element 10 and the displacement of the base 1 is a nonlinear map. The nonlinear rigidity and damping characteristics of the vibration damping device can be adjusted by changing the lengths of the third rod piece 12 and the fourth rod piece 14, the angle of the third rod piece 12 and the elastic coefficient of the elastic element 10, so that the vibration damping effect of high static and low motion is achieved.
The working principle of the low-frequency vibration isolation device is as follows:
when the base 1 of the low frequency vibration isolation device is subjected to vibration in the vertical direction, the elastic element 10 of the vibration isolation assembly deforms and stretches in the horizontal direction, and an opposite restoring force is generated for resisting the vibration. The inertial element 5 generates a force opposite to the vibration, and amplifies the vibration through the lever mechanism to restrain the vibration and reduce the vibration amplitude so as to ensure the stability of the low-frequency vibration isolation device. Meanwhile, certain friction damping can be generated at the joint of the rod pieces, and energy brought by vibration can be consumed.
The equivalent stiffness and damping characteristics can be adjusted by changing the lengths of the third and fourth bars 12 and 14, the angle of the third bar 12, and the elastic coefficient of the elastic member 10, so that the low frequency vibration isolation device has the characteristics of adjustable stiffness and damping.
In addition to this, the mounting position of the first rod member 7 and the second rod member 9 on the slide rod member 6 and thus the lever coefficient of the lever mechanism 8 can be changed, and changing the mass of the inertia member 5 can change the reaction force of the lever mechanism 8 to the carrier plate 4, which can adjust the reaction time for suppressing vibration and the vibration isolation performance of the low frequency vibration isolation device.
According to the vibration isolation device, the mass of the inertial element and the specific energy of the lever are adjusted to adapt to different loads, so that the resonance frequency of the vibration isolation device is reduced, the vibration isolation range is enlarged, the vibration amplitude is reduced, and the vibration isolation effect is improved.
The low-frequency vibration isolation device has good bearing capacity, adjustability and vibration isolation performance, and can protect instruments and equipment and reduce noise for different external excitation under the background of high-precision machine tools and high-precision machining, so that the low-frequency vibration isolation device is effectively applied.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The low-frequency vibration isolation device based on the lever mechanism is characterized by comprising a base and a bearing plate which are arranged in parallel, wherein the lever mechanism and a vibration isolation assembly are arranged between the base and the bearing plate; the lever mechanism comprises a sliding rod piece, a first rod piece and a second rod piece, wherein one end of the sliding rod piece is fixedly provided with an inertial element, and the other end of the sliding rod piece is provided with a sliding groove; the first rod piece is connected between the sliding rod piece and the base, the second rod piece is connected to the bottom of the bearing plate, the bottom of the second rod piece is hinged to the connecting shaft, and the connecting shaft can slide in the sliding groove.
2. The low frequency vibration isolator according to claim 1, wherein the sliding rod is rotatable about a connection with the end of the first rod; the first rod piece is fixedly connected with the base, the second rod piece is fixedly connected with the bearing plate, and the first rod piece and the second rod piece are always kept in a vertical state.
3. The low-frequency vibration isolation device according to claim 1, wherein the connection positions of the second rod piece and the bearing plate and the connection positions of the first rod piece and the base are staggered, and the two connection positions are horizontally separated by a set distance.
4. The low frequency vibration isolator of claim 1 wherein the vibration isolator assembly comprises a linkage mechanism, the top of the linkage mechanism being hinged to the carrier plate and the bottom of the linkage mechanism being hinged to the base.
5. The low frequency vibration isolator according to claim 4, wherein the linkage is a scissor structure having a transverse spring member.
6. The low-frequency vibration isolation device according to claim 5, wherein the link mechanism comprises two cross-hinged third rods, two ends of each third rod are hinged with the fourth rod, the fourth rod connected to the upper end of each third rod is hinged with the bearing plate, and the fourth rod connected to the lower end of each third rod is hinged with the base.
7. The low frequency vibration isolating device as claimed in claim 6, wherein an elastic member is connected between the lower end portions of the two third bars and the hinge point of the fourth bar.
8. The low frequency vibration isolation apparatus of claim 1 wherein said inertial element is a mass.
9. The low frequency vibration isolator according to claim 1, wherein at least two vibration isolator assemblies are provided, at least one lever mechanism is provided, and the vibration isolator assemblies are provided on both sides of the lever mechanism.
10. A vibration isolation method of a low frequency vibration isolation apparatus according to any one of claims 1 to 9, comprising the steps of:
the bearing plate is used as a load platform for bearing the instrument, when the base is vibrated in the vertical direction, the elastic element deforms to generate opposite restoring force in the horizontal direction, and the restoring force is used for resisting the vibration; the inertial element generates an acting force opposite to the vibration and amplifies the acting force through the lever mechanism, so that energy is dissipated to ensure the stability of the low-frequency vibration isolation device.
CN202311278786.9A 2023-09-28 2023-09-28 Low-frequency vibration isolation device and method based on lever mechanism Pending CN117287475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311278786.9A CN117287475A (en) 2023-09-28 2023-09-28 Low-frequency vibration isolation device and method based on lever mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311278786.9A CN117287475A (en) 2023-09-28 2023-09-28 Low-frequency vibration isolation device and method based on lever mechanism

Publications (1)

Publication Number Publication Date
CN117287475A true CN117287475A (en) 2023-12-26

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ID=89253222

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311278786.9A Pending CN117287475A (en) 2023-09-28 2023-09-28 Low-frequency vibration isolation device and method based on lever mechanism

Country Status (1)

Country Link
CN (1) CN117287475A (en)

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