CN112377549A - Multi-direction quasi-zero rigidity vibration isolation platform - Google Patents
Multi-direction quasi-zero rigidity vibration isolation platform Download PDFInfo
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- CN112377549A CN112377549A CN202011212423.1A CN202011212423A CN112377549A CN 112377549 A CN112377549 A CN 112377549A CN 202011212423 A CN202011212423 A CN 202011212423A CN 112377549 A CN112377549 A CN 112377549A
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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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
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Abstract
The invention discloses a multi-direction quasi-zero stiffness vibration isolation platform which comprises a bottom plate, wherein fixed plates are arranged on the left side and the right side of the bottom plate, fixed blocks are arranged on the inner sides of the fixed plates, slide ways are arranged on the inner sides of the fixed blocks, accommodating grooves are formed in the slide ways, a base plate is arranged above the bottom plate, the middle of the base plate is rectangular, semi-circular-arc-shaped boundaries are arranged on two sides of the base plate, a vibration isolation mechanism is arranged between the base plate and the bottom plate, triangular connecting rod mechanisms are arranged at the left end and the right end of the base plate, and a bearing platform. The triangular connecting rod mechanism has the advantages that the assembly angle of the connecting rod, the rigidity of the damping spring and other structural parameters can be conveniently adjusted, the multi-directional quasi-zero rigidity can strictly meet the requirement, the adjustable multi-directional vibration isolation effect is realized, and the triangular connecting rod mechanism can be suitable for protecting large-scale devices and can also be suitable for the environment condition of micro vibration.
Description
Technical Field
The invention relates to the technical field of vibration isolators, in particular to a multi-direction quasi-zero stiffness vibration isolation platform.
Background
With the progress of science and technology, in recent years, rapid development in the fields of machinery, automobiles, aerospace and the like has required designing of an effective vibration isolation platform to suppress damage caused by vibration in order to ensure safety and precision of operators and equipment. Most control systems are passive, and as can be seen from vibration theory, for a linear passive vibration isolation system, vibration isolation is only effective when the excitation frequency is greater than a multiple of the natural frequency of the system. However, reducing the natural frequency of the system reduces the static load-bearing capacity of the system, and therefore, it is always a problem to solve the vibration isolation effect of the passive vibration isolation system.
In recent years, in the process of deep research, the negative stiffness elastic element utilizing the pre-pressed linear spring has the defects of easy buckling, less adjustable parameters and the like, so that how to develop a low-frequency high-static low-dynamic vibration isolation system becomes an urgent research task for researchers and technicians. Although research is conducted on the negative stiffness elastic element of the prepressed quasi-zero stiffness vibration isolation system, and a nonlinear negative stiffness elastic element and more adjustable structural parameters are introduced, although a nonlinear quasi-zero stiffness vibration isolator is used up to now, the number of quasi-zero stiffness vibration isolators in the rotation direction is very small, so that a multidirectional quasi-zero stiffness vibration isolation platform with the characteristic of quasi-zero stiffness needs to be developed, the utilization effect of the platform in the vibration isolation process is analyzed, and how to utilize the platform is an important problem which is overcome by people.
At present, vibration isolators are widely used, but the vibration isolation effect is often ignored by people, so that the vibration isolation effect is very poor, although the optimal effect can be obtained in the theoretical calculation process, the structural design of the vibration isolators is often ignored in the actual application process, and the adverse effects such as poor vibration isolation effect and the like occur in the actual application process.
Therefore, it is necessary to invent a multi-directional quasi-zero stiffness vibration isolation platform to solve the above problems.
Disclosure of Invention
The invention aims to provide a multi-direction quasi-zero stiffness vibration isolation platform, compared with the prior art, the multi-direction quasi-zero stiffness vibration isolation platform provided by the invention, when the base plate is subjected to displacement excitation, the substrate with the semicircular boundary can be excited in a rotating direction, the triangular connecting rod mechanism has negative rigidity, and by establishing a mathematical model, the bearing platform has better static stability under larger amplitude, structural parameters such as the assembly angle of the connecting rod in the triangular connecting rod mechanism, the rigidity of the damping spring and the like can be conveniently adjusted, the multi-direction quasi-zero stiffness vibration isolation platform can lead the characteristic of the multi-direction quasi-zero stiffness to strictly meet the requirement, has the adjustable multi-direction vibration isolation effect, the device can be suitable for protecting large-scale devices and can also be suitable for the environmental conditions of micro vibration so as to solve the defects in the technology.
In order to achieve the above purpose, the invention provides the following technical scheme: a multi-direction quasi-zero stiffness vibration isolation platform comprises a bottom plate, wherein fixed plates are arranged on the left side and the right side of the bottom plate, a guide rail is fixed between the left fixed plate and the right fixed plate, fixed blocks are arranged on the inner sides of the fixed plates, a slide way is arranged on the inner side of each fixed block, a containing groove is formed in each slide way, a base plate is arranged above the bottom plate, the middle of the base plate is rectangular, semi-circular-arc-shaped boundaries are arranged on two sides of the base plate, the base plate and the fixed blocks are located in front of the guide rail, a vibration isolation mechanism is arranged between the base plate and the bottom plate, triangular link mechanisms are arranged at the left;
the vibration isolation mechanism comprises a vibration isolation spring, the upper end and the lower end of the vibration isolation spring are respectively connected with a base plate and a bottom plate, the left side and the right side of the vibration isolation spring are symmetrically provided with a damping component, the lower end of the damping component is provided with a fixed seat, the fixed seat is connected with the bottom plate, the damping component comprises a sleeve, an inner rod is nested in an inner cavity of the sleeve, the top end of the inner rod extends out of the sleeve to be connected with the base plate, a limiting block is fixed at the bottom end of the inner rod, a first damping spring is arranged at the bottom of the limiting block, the bottom end of the first damping spring is connected with the bottom wall of the inner cavity of the sleeve, a second damping spring;
the triangular connecting rod mechanism comprises rolling bearings, connecting rods and two damping springs, the damping springs are nested in the containing grooves, the connecting rods are hinged to the upper ends and the lower ends of the two connecting rods respectively, the other ends of the two connecting rods are hinged to the rolling bearings, the rolling bearings are in contact with the semicircular arc boundaries of the base plates, sliding blocks are fixed on the rear sides of the rolling bearings, and the sliding blocks are installed on the guide rails.
Preferably, the bottom plate and the two fixing plates are integrally arranged.
Preferably, the bearing platform and the substrate are provided with support rods at equal intervals, the lower ends of the support rods are fixedly connected with the substrate, and the upper ends of the support rods are fixedly connected with the bearing platform.
Preferably, the diameter of the limiting block is smaller than the diameter of the inner cavity of the sleeve, the diameter of the limiting block is larger than the diameter of the port of the sleeve, and the limiting block is connected with the inner cavity of the sleeve in a sliding mode.
Preferably, the top end of the inner rod is fixedly sleeved with a stop block, the upper end of the second damping spring is connected with the stop block, and the lower end of the second damping spring is connected with the top end of the sleeve.
Preferably, the sliding block is connected with the guide rail in a sliding mode.
Preferably, a first flange is fixed at the upper end of the vibration isolation spring, the first flange is connected with the middle part of the lower side of the base plate through a bolt, a second flange is fixed at the lower end of the vibration isolation spring, and the second flange is connected with the base plate through a bolt.
Preferably, the top end of the inner rod extends out of the sleeve and is hinged with a first hinge seat, the first hinge seat is connected with the base plate through a bolt, the bottom end of the sleeve is hinged with a second hinge seat, and the second hinge seat is connected with the fixed seat.
Preferably, the left and right sides of fixing base all is provided with the mounting panel, the mounting hole has been seted up on the mounting panel, the nested bolt that has in the mounting hole, the mounting panel passes through the bolt and is connected with the bottom plate.
Preferably, the surface of the fixed seat is provided with a sliding groove, the bottom of the sliding groove is provided with a moving groove, four corners of the second hinge seat are provided with through holes, a threaded rod is nested inside the through holes, the lower end of the threaded rod penetrates through the sliding groove and is connected with a moving block, the moving block is nested in the moving groove and is in sliding connection with the moving groove, and a nut is sleeved on the top thread of the threaded rod.
In the technical scheme, the invention provides the following technical effects and advantages:
1. compared with the prior art, the multi-direction quasi-zero stiffness vibration isolation platform provided by the invention has the advantages that when the bottom plate is subjected to displacement excitation, the substrate with the semicircular boundary can be excited in one rotation direction, the triangular connecting rod mechanism has the negative stiffness characteristic, and through establishing a mathematical model, the bearing platform has better static stability under larger amplitude;
2. the vibration isolation mechanism is composed of the vibration isolation springs and the damping assemblies, the supporting effect on the substrate is improved, the substrate is stably installed, the vibration isolation mechanism is simple to install, meanwhile, the vibration isolation mechanism is convenient to detach and maintain, the inclination degree of the damping assemblies can be changed, the rigidity parameters of the first damping springs and the second damping springs are changed, and the vibration isolation effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a triangular linkage mechanism of the present invention;
FIG. 3 is a side view of the anchor block of the present invention;
FIG. 4 is a cross-sectional view of the mounting block of the present invention;
FIG. 5 is a view showing a connection between a rolling bearing and a slider according to the present invention;
FIG. 6 is a cross-sectional view of a shock absorbing assembly of the present invention;
FIG. 7 is a top view of the mounting base of the present invention;
fig. 8 is a side view of the holder of the present invention.
Description of reference numerals:
the damping device comprises a base plate 1, a fixing plate 2, a guide rail 3, a fixing block 4, a slideway 5, an accommodating groove 6, a base plate 7, a triangular link mechanism 8, a bearing platform 9, a vibration isolation spring 10, a damping component 11, a fixing seat 12, a sleeve 13, an inner rod 14, a first hinge seat 15, a limiting block 16, a first damping spring 17, a stop block 18, a second damping spring 19, a second hinge seat 20, a rolling bearing 21, a connecting rod 22, a damping spring 23, a sliding block 24, a supporting rod 25, a first flange 26, a second flange 27, a mounting plate 28, a mounting hole 29, a sliding chute 30, a moving groove 31, a through hole 32, a threaded rod 33, a moving block 34 and a nut.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The invention provides a multi-direction quasi-zero stiffness vibration isolation platform shown in figures 1-6, which comprises a bottom plate 1, wherein fixed plates 2 are arranged on the left side and the right side of the bottom plate 1, a guide rail 3 is fixed between the left fixed plate 2 and the right fixed plate 2, fixed blocks 4 are arranged on the inner sides of the fixed plates 2, slide ways 5 are arranged on the inner sides of the fixed blocks 4, accommodating grooves 6 are arranged in the slide ways 5, a base plate 7 is arranged above the bottom plate 1, the middle part of the base plate 7 is rectangular, semi-circular-arc-shaped boundaries are arranged on two sides of the base plate 7, the base plate 7 and the fixed blocks 4 are positioned in front of the guide rail 3, a vibration isolation mechanism is arranged between the base plate 7 and the bottom plate 1, triangular link mechanisms 8 are arranged at the left end and the;
the vibration isolation mechanism comprises a vibration isolation spring 10, the upper end and the lower end of the vibration isolation spring 10 are respectively connected with a base plate 7 and a bottom plate 1, the left side and the right side of the vibration isolation spring 10 are symmetrically provided with a damping component 11, the lower end of the damping component 11 is provided with a fixed seat 12, the fixed seat 12 is connected with the bottom plate 1, the damping component 11 comprises a sleeve 13, an inner rod 14 is nested in an inner cavity of the sleeve 13, the top end of the inner rod 14 extends out of the sleeve 13 to be connected with the base plate 7, a limiting block 16 is fixed at the bottom end of the inner rod 14, a first damping spring 17 is arranged at the bottom of the limiting block 16, the bottom end of the first damping spring 17 is connected with the bottom wall of the inner cavity of the sleeve 13, a second damping spring 19 is sleeved on;
the triangular link mechanism 8 comprises rolling bearings 21, connecting rods 22 and damping springs 23, the damping springs 23 are nested in the accommodating grooves 6, the connecting rods 22 are two, one ends of the connecting rods 22 are hinged to the upper ends and the lower ends of the damping springs 23 respectively, the other ends of the connecting rods 22 are hinged to the rolling bearings 21, the rolling bearings 21 are in contact with the semi-arc boundaries of the base plates 7, sliders 24 are fixed on the rear sides of the rolling bearings 21, and the sliders 24 are installed on the guide rails 3.
Furthermore, in the above technical solution, the bottom plate 1 and the two fixing plates 2 are integrally arranged, so that the connection strength between the bottom plate 1 and the two fixing plates 2 is improved, and the connection firmness is improved;
furthermore, in the above technical solution, the supporting rods 25 are arranged between the bearing platform 9 and the substrate 7 at equal intervals, the lower ends of the supporting rods 25 are fixedly connected with the substrate 7, the upper ends of the supporting rods 25 are fixedly connected with the bearing platform 9, and the bearing platform 9 is supported by the supporting rods 25, so that the stability of the installation of the bearing platform 9 is improved;
further, in the above technical solution, the diameter of the limiting block 16 is smaller than the diameter of the inner cavity of the sleeve 13, the diameter of the limiting block 16 is larger than the diameter of the port of the sleeve 13, and the limiting block 16 is slidably connected with the inner cavity of the sleeve 13, so as to prevent the limiting block 16 from being separated from the sleeve 13, thereby improving the stability of the connection between the sleeve 13 and the inner rod 14, and facilitating the inner rod 14 to slide in the sleeve 13;
further, in the above technical solution, a stopper 18 is fixedly sleeved at the top end of the inner rod 14, the upper end of the second damping spring 19 is connected with the stopper 18, and the lower end of the second damping spring 19 is connected with the top end of the sleeve 13, so as to limit the second damping spring 19, and thus the second damping spring 19 is stably installed;
further, in the above technical solution, the sliding block 24 is connected with the guide rail 3 in a sliding manner, so that the sliding block 24 moves in the horizontal direction, that is, the rolling bearing 21 moves in the horizontal direction;
the implementation mode is specifically as follows: when the bottom plate 1 generates displacement excitation, the substrate 7 can be vibrated in two directions of vertical and rotation, after the triangular link mechanisms 8 at two ends of the substrate 7 are pre-pressed, an upward force can be generated in the direction of the connecting rods 22, the force has a component in the vertical direction, so that the triangular link mechanisms 8 generate negative rigidity characteristics, after the triangular link mechanisms 8 are excited, the triangular link mechanisms 8 also generate large deformation, the connecting rods 22 can rotate under the action of the damping springs 23 in the accommodating grooves 6, the triangular link mechanisms 8 can influence the vibration isolation effect of the bearing platform 9, the vibration isolation effect can be analyzed by establishing a mathematical model, and under the condition of large amplitude, the rigidity characteristics of the bearing platform 9 have good static stability; the nonlinear degree of the rigidity can be increased along with the increase of the vibration amplitude, and the nonlinear characteristic of the bearing platform 9 under the vibration reaching the vibration amplitude is increased; the prepressing amount of the damping spring 23 in the triangular link mechanism 8 is increased, the prepressing of the triangular link mechanism 8 can be effectively increased, the prepressing of the triangular link mechanism 8 is increased along with the increase of the prepressing length of the damping spring 23 in the triangular link mechanism 8, the negative stiffness characteristic is more obvious, when the prepressing of the triangular link mechanism 8 reaches a certain critical value, the stiffness near a balance point is changed from positive to negative, the static stability of a zero balance point is damaged at the moment, and the linear stiffness of the substrate 7 in the vertical direction and the rotating direction can be simultaneously reduced and approaches to zero; the rolling bearing 21 is in contact with the substrate 7 with the semicircular interface, and when the bottom plate 1 is subjected to displacement excitation, the substrate 7 with the semicircular interface has relative vertical displacement and rotary displacement; when the substrate 7 vibrates in the vertical direction and the horizontal direction, the rolling bearings 21 can only move in the horizontal direction along the guide rail 3, and the horizontal displacements of the rolling bearings 21 at the two ends in contact with the semi-circular boundary are different, so that the rotational offsets of the left side and the right side of the substrate 7 with the semi-circular boundary are different; in this substrate 7 subjected to forces in both the vertical and rotational directions, the nonlinear stiffness characteristic can be adjusted by changing the structural parameters, and the change in the frequency band can be adjusted by adjusting the pretension range of the damping spring 23, and not only can the structural parameters such as the assembly angle of the link 22 in the triangular link mechanism 8 and the stiffness of the damping spring 23 be conveniently adjusted, but also the resonance frequency of the system can be changed in a wide frequency band. The multi-direction quasi-zero stiffness vibration isolation platform can enable the multi-direction quasi-zero stiffness characteristic to strictly meet the requirement, so the multi-direction quasi-zero stiffness vibration isolation platform has adjustable multi-direction vibration isolation effect, can be suitable for protection of large devices and can also be suitable for the environment condition of micro vibration, and the implementation mode specifically solves the problem that the vibration isolation effect of the vibration isolator in the prior art is poor in the practical application process.
As shown in fig. 1 and 6-8, in the above technical solution, a first flange 26 is fixed at the upper end of the vibration isolation spring 10, the first flange 26 is connected with the middle of the lower side of the base plate 7 through a bolt, a second flange 27 is fixed at the lower end of the vibration isolation spring 10, and the second flange 27 is connected with the base plate 1 through a bolt, so that the vibration isolation spring 10 is simple to mount and convenient to mount, and the vibration isolation spring 10 is convenient to dismount for replacement;
furthermore, in the above technical solution, the top end of the inner rod 14 extends out of the sleeve 13 and is hinged with a first hinge seat 15, the first hinge seat 15 is connected with the substrate 7 through a bolt, the bottom end of the sleeve 13 is hinged with a second hinge seat 20, the second hinge seat 20 is connected with the fixed seat 12, the installation is simple, and the fixing between the damping component 11 and the substrate 7 is facilitated;
further, in the above technical solution, the left and right sides of the fixing seat 12 are both provided with mounting plates 28, the mounting plates 28 are provided with mounting holes 29, bolts are nested in the mounting holes 29, the mounting plates 28 are connected with the bottom plate 1 through the bolts, and the fixing seat 12 is simple and convenient to mount and convenient to dismount;
further, in the above technical solution, a sliding groove 30 is formed in the surface of the fixed seat 12, a moving groove 31 is formed in the bottom of the sliding groove 30, through holes 32 are formed in four corners of the second hinge seat 20, a threaded rod 33 is nested inside the through holes 32, a moving block 34 is connected to the lower end of the threaded rod 33 through the sliding groove 30, the moving block 34 is nested in the moving groove 31, the moving block 34 is slidably connected to the moving groove 31, a nut 35 is sleeved on a top thread of the threaded rod 33, and the nut 35 is loosened by rotating the threaded rod to facilitate adjusting the position of the second hinge seat 20 on the fixed seat 12, so as to adjust the angle of the damping component 11;
the implementation mode is specifically as follows: the vibration isolation mechanism is arranged between the base plate 1 and the base plate 7, the vibration isolation mechanism is composed of two shock absorption components 11 and two vibration isolation springs 10, the two shock absorption components 11 are symmetrical about the central axis of the vibration isolation springs 10, the base plate 7 is supported through the two shock absorption components 11 and the vibration isolation springs 10, the mounting stability of the base plate 7 is improved, and the vibration isolation effect of the base plate 7 is ensured, the upper ends of the shock absorption components 11 and the vibration isolation springs 10 are connected with the base plate 7 through bolts, the lower ends of the shock absorption components 11 and the vibration isolation springs 10 are connected with the base plate 1 through bolts, so that the vibration isolation mechanism is simple to mount and convenient to dismount for maintenance and replacement, the second hinge base 20 is mounted on the fixed base 12, the second hinge base 20 is convenient to move according to actual requirements through turning the loosening nut 35, the position of the second hinge base 20 on the fixed base 12 is, the supporting effect and the vibration isolation effect on the substrate 7 are improved, and the problems that the vibration isolation mechanism in the prior art is complex to install and inconvenient to maintain and replace are specifically solved by the implementation mode.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a multi-direction accurate zero rigidity vibration isolation platform, includes bottom plate (1), its characterized in that: the left side and the right side of the bottom plate (1) are both provided with a fixed plate (2), a guide rail (3) is fixed between the left fixed plate and the right fixed plate (2), a fixed block (4) is arranged on the inner side of the fixed plate (2), a slide way (5) is arranged on the inner side of the fixed block (4), the inside of the slideway (5) is provided with a holding groove (6), a base plate (7) is arranged above the bottom plate (1), the middle part of the base plate (7) is rectangular, two sides of the base plate (7) are provided with semi-circular arc boundaries, the base plate (7) and the fixed block (4) are both positioned in front of the guide rail (3), a vibration isolation mechanism is arranged between the base plate (7) and the bottom plate (1), triangular link mechanisms (8) are arranged at the left end and the right end of the base plate (7), and a bearing platform (9) is arranged above the base plate (7);
the vibration isolation mechanism comprises vibration isolation springs (10), the upper end and the lower end of each vibration isolation spring (10) are respectively connected with a base plate (7) and a bottom plate (1), damping components (11) are symmetrically arranged on the left side and the right side of each vibration isolation spring (10), a fixing seat (12) is arranged at the lower end of each damping component (11), each fixing seat (12) is connected with the corresponding bottom plate (1), each damping component (11) comprises a sleeve (13), an inner rod (14) is nested in an inner cavity of each sleeve (13), the top end of each inner rod (14) extends out of the corresponding sleeve (13) to be connected with the corresponding base plate (7), a limiting block (16) is fixed at the bottom end of each inner rod (14), a first damping spring (17) is arranged at the bottom of each limiting block (16), the bottom end of each first damping spring (17) is connected with the bottom wall of the inner cavity of the corresponding sleeve (13), a second damping spring, the bottom end of the sleeve (13) is connected with the fixed seat (12);
triangle-shaped link mechanism (8) are including antifriction bearing (21), connecting rod (22) and damping spring (23), damping spring (23) nestification is in holding tank (6), connecting rod (22) are provided with two, two the one end of connecting rod (22) is articulated continuous with the upper and lower both ends of damping spring (23) respectively, two the other end and the antifriction bearing (21) of connecting rod (22) are articulated, the semi-circular arc border contact of antifriction bearing (21) and base plate (7), the rear side of antifriction bearing (21) is fixed with slider (24), slider (24) are installed on guide rail (3).
2. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the bottom plate (1) and the two fixing plates (2) are integrally arranged.
3. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the supporting device is characterized in that supporting rods (25) are arranged between the bearing platform (9) and the base plate (7) at equal intervals, the lower ends of the supporting rods (25) are fixedly connected with the base plate (7), and the upper ends of the supporting rods (25) are fixedly connected with the bearing platform (9).
4. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the diameter of the limiting block (16) is smaller than the diameter of the inner cavity of the sleeve (13), the diameter of the limiting block (16) is larger than the diameter of the port of the sleeve (13), and the limiting block (16) is connected with the inner cavity of the sleeve (13) in a sliding mode.
5. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the top end of the inner rod (14) is fixedly sleeved with a stop block (18), the upper end of a second damping spring (19) is connected with the stop block (18), and the lower end of the second damping spring (19) is connected with the top end of the sleeve (13).
6. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the sliding block (24) is connected with the guide rail (3) in a sliding mode.
7. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: a first flange (26) is fixed at the upper end of the vibration isolation spring (10), the first flange (26) is connected with the middle part of the lower side of the base plate (7) through bolts, a second flange (27) is fixed at the lower end of the vibration isolation spring (10), and the second flange (27) is connected with the bottom plate (1) through bolts.
8. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the top end of the inner rod (14) extends out of the sleeve (13) and is hinged with a first hinge seat (15), the first hinge seat (15) is connected with the base plate (7) through a bolt, the bottom end of the sleeve (13) is hinged with a second hinge seat (20), and the second hinge seat (20) is connected with the fixed seat (12).
9. The multi-directional quasi-zero stiffness vibration isolation platform of claim 1, wherein: the left and right sides of fixing base (12) all is provided with mounting panel (28), mounting hole (29) have been seted up on mounting panel (28), the nested bolt that has in mounting hole (29), mounting panel (28) are connected with bottom plate (1) through the bolt.
10. The multi-directional quasi-zero stiffness vibration isolation platform of claim 8, wherein: the surface of the fixed seat (12) is provided with a sliding groove (30), the bottom of the sliding groove (30) is provided with a moving groove (31), four corners of the second hinge seat (20) are provided with through holes (32), a threaded rod (33) is nested inside the through holes (32), the lower end of the threaded rod (33) penetrates through the sliding groove (30) and is connected with a moving block (34), the moving block (34) is nested in the moving groove (31), the moving block (34) is in sliding connection with the moving groove (31), and a nut (35) is sleeved on the top thread of the threaded rod (33).
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| CN202011212423.1A CN112377549A (en) | 2020-11-03 | 2020-11-03 | Multi-direction quasi-zero rigidity vibration isolation platform |
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| CN202011212423.1A CN112377549A (en) | 2020-11-03 | 2020-11-03 | Multi-direction quasi-zero rigidity vibration isolation platform |
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|---|---|---|---|---|
| CN113294471A (en) * | 2021-06-21 | 2021-08-24 | 杭州电子科技大学 | Multi-direction isolator based on quasi-zero rigidity |
| CN113942956A (en) * | 2021-11-04 | 2022-01-18 | 盐城工学院 | Based on multi-direction platform adjusting device of electric automatization |
| CN114775405A (en) * | 2022-04-11 | 2022-07-22 | 同济大学 | Girder corner control type bridge damping vibration damper |
| CN115007463A (en) * | 2022-06-16 | 2022-09-06 | 常州大学 | Precision part sorting device based on voice coil motor |
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| CN113294471A (en) * | 2021-06-21 | 2021-08-24 | 杭州电子科技大学 | Multi-direction isolator based on quasi-zero rigidity |
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