Metal very-low-frequency vibration reduction and isolation device
By combining anti-loosening components and large and small wire rope springs, the problems of loose connection and insufficient multi-directional force performance of traditional wire rope shock absorbers are solved, achieving high stiffness, large load-bearing capacity and wide frequency range vibration reduction, thus improving the stability and vibration isolation effect of the equipment.
Patent Information
- Application Number
- CN202520628015.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Traditional wire rope vibration dampers suffer from problems such as loose connections, insufficient multi-directional force performance, and poor performance under complex vibration conditions, making it difficult to meet the requirements of high stiffness, large load-bearing capacity, and wide frequency range vibration damping.
The design employs a combination of anti-loosening components and large and small wire rope springs. The anti-loosening components prevent the nut from rotating, and the combination of large and small wire rope springs enhances the stability of the connection. Multi-directional vibration isolation is achieved through the detachable connection between the support block and the small wire rope spring.
It effectively prevents connections from loosening, improves equipment stability and reliability, enhances multi-directional vibration reduction capabilities, and improves low-frequency vibration isolation performance and overall equipment stability.
Smart Images
Figure CN223768022U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibration damping and isolating technology, specifically a metal very low frequency vibration damping and isolating device. Background Technology
[0002] Metallic very low frequency vibration isolators, as a new type of vibration control device, are mainly designed for vibration problems in the very low frequency range. They achieve efficient vibration isolation and energy dissipation by utilizing the elastic and damping properties of metallic materials. Their core lies in using the nonlinear elastic properties of metallic materials to provide greater stiffness during low-frequency vibrations, thereby effectively suppressing the transmission of low-frequency vibrations. Wire rope vibration isolators, as a classic vibration damping device, effectively absorb and dissipate external vibration energy through their elastic properties and the energy dissipation capacity of the damper. They are widely used in bridge seismic resistance, building structure vibration reduction, and mechanical equipment vibration isolation. The main components of a wire rope vibration isolator include wire rope, damper (such as friction damper or viscoelastic damper), connectors, and support frame.
[0003] In existing technologies, traditional wire rope vibration dampers have certain limitations in the field of vibration control. When wire rope vibration dampers are connected to equipment housings, prolonged vibration can easily cause the bolts and nuts connecting the dampers to the housings to loosen, resulting in an unreliable connection that affects stability and reliability. Furthermore, their performance under multi-directional stress, very low-frequency vibration control, and complex vibration conditions is insufficient, making it difficult to meet the requirements for high stiffness, high load-bearing capacity, and wide-frequency-range vibration damping. Utility Model Content
[0004] The purpose of this invention is to provide a metal very low frequency vibration damping isolator to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal very low frequency vibration damping and isolating device, comprising: a machine housing, the lower surface of the machine housing abutting against the upper surface of the upper clamping plate, a large bolt being sleeved between the machine housing and the upper clamping plate, a nut being threaded to the bottom of the large bolt, and an anti-loosening component being provided on the lower side of the nut;
[0006] A lower clamping plate is provided on the lower side of the upper clamping plate. The lower surface of the lower clamping plate is fixedly connected to the upper surface of the positioning steel base plate. A large steel wire rope spring is fixedly sleeved between the upper clamping plate and the lower clamping plate. Small steel wire rope springs are fixedly installed on both sides of the large steel wire rope spring. The lower surface of the positioning steel base plate is welded and fixed to the frame.
[0007] Preferably, the surface of the equipment casing has mounting holes arranged in a linear array and penetrating the upper clamping plate, with large bolts slidably fitted into the mounting holes.
[0008] Preferably, a washer is slidably fitted on the top of the large bolt, the lower surface of the washer abuts against the upper surface of the equipment housing, and the upper surface of the washer is provided with anti-slip texture.
[0009] Preferably, the anti-loosening component includes a fixed shell, the upper surface of which is fixedly connected to the lower surface of the upper clamping plate, the lower surface of which is fixedly connected to a fixed gear plate, the upper side of which engages with the rotating gear plate through triangular teeth, the lower surface of which is fixedly connected to one end of the pressure rod, and a pressure block is fixedly connected to the other end of the pressure rod.
[0010] Preferably, the upper surface of the rotating gear is fixedly connected to one end of the insertion rod, the other end of the insertion rod is slidably inserted into the nut surface through an insertion hole, one end of the fixed housing is fixedly connected to the return spring, the other end of the return spring abuts against the rotating gear, and the rotating gear is slidably sleeved in the fixed housing.
[0011] Preferably, one side of the small steel wire rope spring is detachably connected to one side of the support block via an auxiliary clamp and small bolts, while the other side of the support block is fixedly connected to the positioning steel base plate.
[0012] Preferably, the other side of the small wire rope spring is fixedly connected to one end of the connecting plate via an auxiliary clamp, and the other end of the connecting plate is fixedly sleeved on the large wire rope spring.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. By setting the anti-loosening components, the nut rotation is effectively prevented, ensuring a stable and reliable connection between the equipment housing and the upper clamping plate, avoiding the problem of connection loosening caused by long-term vibration, and improving the stability and reliability of the equipment; at the same time, the cooperation of large and small steel wire rope springs enhances the multi-directional shock absorption capability of the device, effectively sharing the load and dissipating energy, and improving the low-frequency vibration isolation performance.
[0015] 2. The detachable connection design between the support block and the small steel wire rope spring allows for optimization of the support direction according to actual needs, achieving multi-directional vibration isolation and further improving the adaptability of the device under complex vibration conditions. At the same time, it can effectively reduce the transmission of low-frequency vibrations and enhance the overall stability of the equipment. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a top view of the overall structure of this utility model;
[0018] Figure 3 This is a bottom view of the internal structure of this utility model;
[0019] Figure 4 This utility model Figure 3Enlarged schematic diagram of the structure at point A in the middle.
[0020] In the diagram: 1. Equipment housing; 2. Upper clamping plate; 3. Large bolt; 4. Nut; 5. Lower clamping plate; 6. Positioning steel base plate; 8. Large wire rope spring; 9. Small wire rope spring; 10. Frame; 11. Mounting hole;
[0021] 12. Gasket; 13. Anti-slip texture; 14. Fixing shell; 15. Fixing gear plate; 16. Rotating gear plate; 17. Pressure rod; 18. Pressure block; 19. Insert rod; 20. Insertion hole; 21. Return spring; 22. Auxiliary clamping plate; 23. Support block; 24. Connecting plate. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a metal very low frequency vibration damping and isolating device, comprising: a machine housing 1, the lower surface of the machine housing 1 abutting against the upper surface of the upper clamping plate 2, a large bolt 3 being sleeved between the machine housing 1 and the upper clamping plate 2, a nut 4 being threadedly connected to the bottom of the large bolt 3, the upper clamping plate 2 and the machine housing 1 being fixedly connected by the cooperation of the large bolt 3 and the nut 4, an anti-loosening component being provided on the lower side of the nut 4, the anti-loosening component being provided to prevent the nut 4 from rotating, thereby preventing loosening between the large bolt 3 and the nut 4, a lower clamping plate 5 being provided on the lower side of the upper clamping plate 2, the lower surface of the lower clamping plate 5 being fixedly connected to the upper surface of the positioning steel base plate 6, a large steel wire rope spring 8 being fixedly sleeved between the upper clamping plate 2 and the lower clamping plate 5, small steel wire rope springs 9 being fixedly installed on both sides of the large steel wire rope spring 8, and the lower surface of the positioning steel base plate 6 being welded and fixed to the frame 10.
[0024] The frame 10 provides stable support for the entire device. The operator fixes the device housing 1 to the upper surface of the upper clamping plate 2 by contacting the bottom of the housing 1 with the upper surface of the upper clamping plate 2, and then fixes the housing 1 to the upper clamping plate 2 by the cooperation of the large bolt 3 and the nut 4. The anti-loosening component prevents the nut 4 from rotating, thus preventing the large bolt 3 and the nut 4 from loosening and making the connection of the housing 1 stable. When the equipment vibrates, the large wire rope spring 8 undergoes lateral deformation due to the pressure of the upper clamping plate 2 and the limit of the lower clamping plate 5. The cross strands of the wire rope dissipate energy through mutual force and friction. The large wire rope spring 8 will squeeze the small wire rope springs 9 on both sides to share the load, reduce low-frequency vibration isolation, and improve the stability of the equipment.
[0025] Example 2: Based on Example 1, mounting holes 11 are provided on the surface of the equipment housing 1. The mounting holes 11 facilitate the connection of the large bolt 3. The mounting holes 11 are arranged in a linear array and penetrate the upper clamping plate 2. The large bolt 3 is slidably fitted in the mounting holes 11. A washer 12 is slidably fitted on the top of the large bolt 3. The lower surface of the washer 12 abuts against the upper surface of the equipment housing 1. The upper surface of the washer 12 has anti-slip texture 13. The anti-slip texture 13 on the washer 12 increases the friction between the top of the large bolt 3 and the washer 12, thereby preventing the large bolt 3 from loosening. The anti-loosening component includes a fixing shell 14. The upper surface of the fixing shell 14 is fixedly connected to the lower surface of the upper clamping plate 2, and the lower surface of the fixing shell 14 is fixedly connected to the fixing gear plate 15. The fixed gear disk 15 is connected to the rotating gear disk 16 by triangular teeth on its upper side. Both the fixed gear disk 15 and the rotating gear disk 16 are provided with triangular teeth. The meshing of the triangular teeth improves the stability of the connection between them, so that they will not rotate at will. The lower surface of the rotating gear disk 16 is fixedly connected to one end of the pressure rod 17. The other end of the pressure rod 17 is fixedly connected to the pressure block 18. The upper surface of the rotating gear disk 16 is fixedly connected to one end of the insertion rod 19. The other end of the insertion rod 19 is slidably inserted into the insertion hole 20 on the surface of the nut 4. The fixed housing 14 is fixedly connected to one end of the return spring 21. The other end of the return spring 21 abuts against the rotating gear disk 16. The rotating gear disk 16 is slidably sleeved in the fixed housing 14.
[0026] Before the fixed connection between the equipment housing 1 and the upper clamping plate 2, in the initial state, the return spring 21 pushes the rotating gear 16 downward through its elastic force, so that it engages with the fixed gear 15. At the same time, the insertion rod 19 abuts against the top of the insertion hole 20. When fixing the connection between the equipment housing 1 and the upper clamping plate 2, the gasket 12 is placed on the large bolt 3, and the large bolt 3 is placed in the mounting hole 11. At the same time, by pressing the pressure block 18 upward, the return spring 21 is squeezed, so that the pressure block 18 abuts against the fixed shell 14. Under the connection of the pressure rod 17, the pressure block 18 drives the rotating gear 16 to move upward, so that the rotating gear 16 no longer engages with the fixed gear 15. The rotating gear 16 pushes the nut 4 upward through the connection of the insertion rod 19. The nut 4 is fixed by the cooperation of the insertion rod 19 and the insertion hole 20, so that the nut 4 abuts against the lower surface of the upper clamping plate 2. Then, by tightening the large bolt 3, the bottom of the large bolt 3 is threadedly connected to the nut 4, so that the top of the large bolt 3 will hold the gasket 12 in place. The plate 12 is pressed against the upper surface of the equipment housing 1. Then the pressure block 18 is released. Under the reverse elastic force of the return spring 21, the rotating gear 16 is pushed downward, causing the insertion rod 19 to slide a distance towards the bottom of the insertion hole 20 but not out of the insertion hole 20. The rotating gear 16 then engages with the fixed gear 15 again. At this time, the height difference between the top of the insertion rod 19 and the top of the insertion hole 20 is equal to the height difference between the upper surface of the pressure block 18 and the lower surface of the fixed housing 14. Thus, the fixed gear 15 limits and fixes the rotating gear 16. Then, the rotating gear 16 limits the nut 4 through the cooperation between the insertion rod 19 and the insertion hole 20, thereby preventing the nut 4 from rotating and achieving the anti-loosening of the nut 4. At the same time, the top of the large bolt 3 abuts against the anti-slip texture 13 on the upper surface of the washer 12, thereby further preventing the large bolt 3 from rotating. This makes the connection between the large bolt 3 and the nut 4 more stable, avoiding the loosening of the connection between the equipment housing 1 and the other bottom parts due to long-term vibration, and improving the stability and reliability of the equipment housing 1.
[0027] Example 3: Based on Example 2, one side of the small wire rope spring 9 is detachably connected to one side of the support block 23 via an auxiliary clamp 22 and small bolts. The support block 23 supports the small wire rope spring 9. The other side of the support block 23 is fixedly connected to the positioning steel base plate 6. The other side of the small wire rope spring 9 is fixedly connected to one end of the connecting plate 24 via the auxiliary clamp 22. The other end of the connecting plate 24 is fixedly sleeved on the large wire rope spring 8.
[0028] When the equipment vibrates, pressure is generated through the equipment casing 1 at its bottom, which presses against the upper clamping plate 2. The upper clamping plate 2 then compresses the large wire rope spring 8. The large wire rope spring 8 deforms laterally or returns to its original state under the limitation of the lower clamping plate 5. The interaction between the horizontal strands of the wire rope dissipates the force through friction. At the same time, the fixed connection between the connecting plate 24 and the auxiliary clamping plate 22 on one side of the small wire rope spring 9 compresses the small wire rope spring 9. Then, the deformation of the small wire rope spring 9 is distributed by the limitation of the support block 23, thereby playing a role in vibration isolation and improving the stability of the equipment. In addition, during installation, by changing the connection and fixing position between the support block 23 and the auxiliary clamping plate 22 on one side of the small wire rope spring 9, the support direction can be optimized according to the actual situation, achieving multi-directional vibration isolation, reducing low-frequency vibrations from different directions, and further improving stability.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A metal very low frequency vibration absorber comprising a device housing (1), characterized in that: The lower surface of the equipment shell (1) is in abutment with the upper surface of the upper clamping plate (2), a large bolt (3) is sleeved between the equipment shell (1) and the upper clamping plate (2), the bottom of the large bolt (3) is threadedly connected with a nut (4), and the lower side of the nut (4) is provided with an anti-loosening assembly; The lower side of the upper clamping plate (2) is provided with a lower clamping plate (5), the lower surface of the lower clamping plate (5) is fixedly connected with the upper surface of a positioning steel base plate (6), a large steel wire rope spring (8) is fixedly sleeved between the upper clamping plate (2) and the lower clamping plate (5), small steel wire rope springs (9) are fixedly installed on the two sides of the large steel wire rope spring (8), and the lower surface of the positioning steel base plate (6) is welded and fixed with a rack (10).
2. A metal VLF vibration absorber according to claim 1, characterized in that: The surface of the equipment shell (1) is provided with mounting holes (11), the mounting holes (11) are arranged in a linear array and penetrate through the upper clamping plate (2), and the large bolt (3) is slidably sleeved in the mounting holes (11).
3. A metal VLF vibration absorber according to claim 2, characterized in that: The top of the large bolt (3) is slidably sleeved with a gasket (12), the lower surface of the gasket (12) is in abutment with the upper surface of the equipment shell (1), and the upper surface of the gasket (12) is provided with anti-skid lines (13).
4. A metal VLF vibration absorber according to claim 1, characterized in that: The anti-loosening assembly comprises a fixed shell (14), the upper surface of the fixed shell (14) is fixedly connected with the lower surface of the upper clamping plate (2), the lower surface of the fixed shell (14) is fixedly connected with a fixed tooth disc (15), the upper side of the fixed tooth disc (15) is meshed with a rotating tooth disc (16) through a triangular tooth, the lower surface of the rotating tooth disc (16) is fixedly connected with one end of a pressing rod (17), and the other end of the pressing rod (17) is fixedly connected with a pressing block (18).
5. A metal VLF absorber-isolator according to claim 4, characterized in that: The upper surface of the rotating tooth disc (16) is fixedly connected with one end of an insertion rod (19), the other end of the insertion rod (19) is slidably inserted into a insertion hole (20) formed in the surface of the nut (4), one end of a reset spring (21) is fixedly connected with the fixed shell (14), the other end of the reset spring (21) is in abutment with the rotating tooth disc (16), and the rotating tooth disc (16) is slidably sleeved in the fixed shell (14).
6. A metal VLF absorber-isolator according to claim 1, characterized in that: One side of the small steel wire rope spring (9) is detachably connected with one side of a supporting block (23) through an auxiliary clamping plate (22) and a small bolt, and the other side of the supporting block (23) is fixedly connected with the positioning steel base plate (6).
7. A metal VLF absorber-isolator according to claim 6, characterized in that: The other side of the small steel wire rope spring (9) is fixedly connected with one end of a connecting plate (24) through the auxiliary clamping plate (22), and the other end of the connecting plate (24) is fixedly sleeved on the large steel wire rope spring (8).