Frequency continuously tunable type anti-vibration hammer
By designing a frequency-adjustable vibration damper, the position of the damper head can be continuously adjusted using a threaded sleeve and a measuring plate. Combined with a damping mechanism, this solves the problem of poor adaptability of traditional vibration dampers, achieving efficient conductor vibration suppression and damping effects, and reducing line maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGAN UNIV
- Filing Date
- 2026-04-08
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional vibration dampers use a crimped connection between the hammer head and the steel strand, which cannot be flexibly adjusted according to the actual vibration frequency and operating conditions of the line. This results in poor adaptability, an inability to effectively suppress conductor vibration, and an increase in line maintenance costs and difficulty.
A frequency-adjustable vibration damping hammer is designed. By setting a threaded sleeve and a measuring plate on the surface of the external threaded pipe, the position of the hammer head can be continuously adjusted. Combined with the scale lines and frequency marking area, an intuitive reference is provided to ensure the precise adjustment of the hammer head position. The vibration damping mechanism absorbs vibration energy and improves the vibration damping effect.
It achieves flexible frequency adjustment and efficient vibration reduction of the vibration damper, improves the adaptability and vibration damping effect of the vibration damper, reduces conductor damage, extends service life, simplifies operation procedures, and reduces maintenance costs.
Smart Images
Figure CN122159117A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vibration damping hammer technology, specifically to a vibration damping hammer with continuously adjustable frequency. Background Technology
[0002] The stable operation of overhead transmission lines is crucial in power transmission. However, due to the effects of wind, transmission lines vibrate. If this vibration is not effectively suppressed, it can lead to fatigue damage to the conductors over time, and even cause serious accidents such as strand breakage or wire breakage, which greatly threatens the safety and reliable power supply of the power grid. Vibration dampers, as key devices for suppressing the vibration of transmission lines, are widely used in overhead transmission lines.
[0003] Traditional vibration damper hammers use a crimp connection between the hammer head and the steel strand. After leaving the factory, the pendulum length and vibration frequency of the vibration damper cannot be adjusted, making it impossible to flexibly adjust according to the actual vibration frequency and operating conditions of the line. When the conductor operating conditions change, it is difficult to rematch the new vibration frequency. The fixed-position vibration damper cannot achieve the best vibration damping effect at different vibration frequencies, resulting in poor adaptability, failure to fully exert its vibration damping function, and inability to effectively protect the transmission conductor, increasing the cost and difficulty of line maintenance. In order to solve the above technical problems, we have designed a frequency continuously adjustable vibration damper. Summary of the Invention
[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.
[0005] The purpose of this invention is to provide a frequency-adjustable vibration damper, which has the advantages of continuously variable pendulum length according to different vibration frequencies, making the inherent frequency of the vibration damper continuously adjustable. This solves the problem that traditional vibration dampers generally adopt a fixed structure with a relatively fixed position of the hammer head, making it impossible to flexibly adjust according to the vibration frequency and working conditions of the actual line.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a frequency-adjustable vibration damper, comprising a steel strand, with externally threaded tubes fitted on both sides of the surface of the steel strand, a hammer head fitted on the surface of the externally threaded tubes, threaded sleeves threaded on both sides of the surface of the externally threaded tubes, a connecting block fixedly fitted on the surface of the externally threaded tubes, a measuring plate fixedly connected to the surface of the connecting block, a scale line provided on the top of the front side of the measuring plate, a frequency marking area provided on the bottom of the front side of the measuring plate, a lower clamping ring and an upper clamping ring respectively fitted on the surface of the steel strand, and a shock-absorbing mechanism fixedly connected to the top of the upper clamping ring.
[0007] Preferably, L-shaped plates are fixedly connected to both sides of the external threaded tube, a threaded rod is connected through the top of the L-shaped plate, and a pressure ring is movably connected through the bottom of the threaded rod through the L-shaped plate.
[0008] Preferably, support rings are fixedly connected to both sides of the external threaded tube, the inner wall of the support ring is in contact with the steel strand, and the threaded rod is threadedly connected to the L-shaped plate.
[0009] Preferably, a guide rod is fixedly connected to the top of the pressure ring, and the top of the guide rod passes through the L-shaped plate and is movably connected to the L-shaped plate.
[0010] Preferably, a washer is movably fitted onto the surface of the threaded sleeve, a connecting plate is fixedly connected to the front side of the washer, and a hanging rod is fixedly connected to the front side of the connecting plate, with the hanging rod hanging on the surface of the measuring plate.
[0011] Preferably, a first nut is fixedly connected to the bottom of the lower clamping ring, and a first bolt is connected through the top of the upper clamping ring. The bottom of the first bolt passes through the upper clamping ring, the lower clamping ring, and the first nut, respectively, and the first bolt is threadedly connected to the first nut.
[0012] Preferably, the damping mechanism includes a first vertical rod, a first circular plate fixedly connected to the top of the first vertical rod, a second circular plate sleeved on the surface of the first vertical rod, a second vertical rod fixedly connected to the top of the second circular plate, the top of the second vertical rod penetrating through the first circular plate and movably connected to the first circular plate, a first spring sleeved on both the upper and lower sides of the surface of the second vertical rod, a first damper fixedly connected to both the front and rear sides of the top of the first circular plate, the top of the first damper fixedly connected to the second circular plate, and a flat plate fixedly connected to the top of the second vertical rod.
[0013] Preferably, a vertical plate is fixedly connected to the top of the flat plate, a horizontal bar is connected through the surface of the vertical plate, a U-shaped plate is fixedly connected to the top of the horizontal bar, and a second spring is sleeved on both the front and rear sides of the horizontal bar. One side of the second spring is fixedly connected to the vertical plate, and the other side of the second spring is fixedly connected to the U-shaped plate.
[0014] Preferably, a second damper is fixedly connected to both the front and rear sides of the vertical plate, and the end of the second damper away from the vertical plate is fixedly connected to the U-shaped plate.
[0015] Preferably, the top of the U-shaped plate is connected to a lower collar via a support block, the top of the lower collar is provided with an upper collar, the bottom of the lower collar is fixedly connected with a second nut, the top of the upper collar is connected with a second bolt, and the bottom of the second bolt passes through the upper collar and the second nut respectively and is threadedly connected to the second nut.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting a threaded sleeve on the surface of the external threaded pipe, enables continuous and precise adjustment of the hammer head position. The continuous adjustability of the hammer head position allows for continuous adjustment of the anti-vibration hammer's pendulum length and frequency within a certain range. Operators can flexibly move the hammer head to a suitable position according to the actual vibration frequency of the transmission line under different operating conditions, so that the anti-vibration hammer can better match the vibration characteristics of the transmission line. Regardless of different regions, seasons, or complex and changeable weather conditions, it can effectively suppress transmission line vibration, greatly improving the adaptability and anti-vibration effect of the anti-vibration hammer, effectively protecting the transmission line, reducing conductor damage and accidents caused by vibration, and extending the service life of the transmission line.
[0017] 2. The measuring plate of this invention and the scale lines set on its front bottom provide an intuitive and accurate reference for determining the position of the hammer head. When adjusting the position of the hammer head, the operator only needs to observe the position of the hammer head relative to the scale lines to accurately know the installation position of the hammer head, avoiding errors caused by adjustment based on experience, improving the accuracy and efficiency of adjustment. This not only facilitates the installation and maintenance of the vibration damping hammer, but also ensures that the hammer head is in the optimal vibration damping position after each adjustment, further improving the performance stability of the vibration damping hammer.
[0018] 3. The frequency marking area of this invention clearly marks the frequency range corresponding to different scale positions. Operators do not need to perform complicated calculations and queries. They can quickly determine the scale position to which the hammer should be adjusted by referring to the frequency marking area based on the actual measured conductor vibration frequency. This convenient reference method greatly simplifies the operation process, saves time and labor costs, and makes the adjustment of the vibration damper more efficient and accurate. It is especially suitable for emergency situations that require a rapid response to changes in conductor vibration.
[0019] 4. When the anti-vibration hammer is vibrated, the second circular plate will move relative to the first vertical rod. At this time, the first spring sleeved on the upper and lower sides of the second vertical rod will play a role. During the vibration, the first spring will undergo elastic deformation and absorb part of the vibration energy through its own elastic force. The first damper can use its internal damping medium to dissipate the vibration energy in the form of heat energy, further weakening the vibration intensity. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 4 This is a schematic cross-sectional view of the first and second circular plates of the present invention; Figure 5 This is a bottom view of the vertical plate and horizontal bar of the present invention.
[0022] In the diagram: 1. Steel strand; 2. Externally threaded tube; 3. Hammer head; 4. Threaded sleeve; 5. Connecting block; 6. Measuring plate; 7. Scale line; 8. Frequency marking area; 9. Lower clamping ring; 10. Upper clamping ring; 11. L-shaped plate; 12. Threaded rod; 13. Pressure ring; 14. Support ring; 15. Guide rod; 16. Washer ring; 17. Connecting plate; 18. Hanging rod; 19. First nut; 20. First bolt; 21. Vibration damper Mechanism; 210, First vertical rod; 211, First circular plate; 212, Second circular plate; 213, Second vertical rod; 214, First spring; 215, First damper; 216, Flat plate; 217, Vertical plate; 218, Horizontal rod; 219, U-shaped plate; 220, Second spring; 221, Second damper; 222, Lower collar; 223, Upper collar; 224, Second bolt; 225, Second nut. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] Example 1 Please see Figures 1-3A frequency-adjustable vibration damper includes a steel strand 1, with externally threaded tubes 2 fitted on both sides of the surface of the steel strand 1. A hammer head 3 is fitted on the surface of the externally threaded tubes 2, and threaded sleeves 4 are threaded on both sides of the surface of the externally threaded tubes 2. A connecting block 5 is fixedly fitted on the surface of the externally threaded tubes 2, and a measuring plate 6 is fixedly connected to the surface of the connecting block 5. A scale line 7 is provided on the top of the front of the measuring plate 6, and a frequency marking area 8 is provided on the bottom of the front of the measuring plate 6. A lower clamping ring 9 and an upper clamping ring 10 are respectively fitted on the surface of the steel strand 1, and a shock-absorbing mechanism 2 is fixedly connected to the top of the upper clamping ring 10. 1. By setting a threaded sleeve 4 on the surface of the external threaded pipe 2, the position of the hammer head 3 can be precisely adjusted. The operator can flexibly move the hammer head 3 to a suitable position according to the actual vibration frequency of the transmission line under different working conditions, so that the vibration damper can better match the vibration characteristics of the line. Regardless of different regions, different seasons, or complex and changeable weather conditions, it can effectively suppress the vibration of the line, greatly improve the adaptability and vibration damping effect of the vibration damper, effectively protect the transmission line, reduce the damage and accidents of the line caused by vibration, and extend the service life of the line.
[0025] Both sides of the externally threaded tube 2 are fixedly connected to L-shaped plates 11. A threaded rod 12 is connected through the top of the L-shaped plate 11, and a pressure ring 13 is movably connected through the bottom of the threaded rod 12 through the L-shaped plate 11. By setting up the L-shaped plate 11, the threaded rod 12 and the pressure ring 13, a reliable fixing method is provided for the externally threaded tube 2. Rotating the threaded rod 12 and threading it to the L-shaped plate 11 causes the threaded rod 12 to drive the pressure ring 13 to move downward. The pressure ring 13 can tightly press the steel strand 1, and increase the friction through greater pressure, thereby reliably fixing the externally threaded tube 2.
[0026] Both sides of the external threaded tube 2 are fixedly connected with support rings 14. The inner wall of the support ring 14 is in contact with the steel strand 1. The threaded rod 12 is threadedly connected to the L-shaped plate 11. By setting the support rings 14, the bottom of the steel strand 1 can be supported. With the top pressure ring 13 pressing the steel strand 1, the external threaded tube 2 can be locked and fixed, with high stability.
[0027] A guide rod 15 is fixedly connected to the top of the pressure ring 13. The top of the guide rod 15 passes through the L-shaped plate 11 and is movably connected to the L-shaped plate 11. The setting of the guide rod 15 ensures the stability of the pressure ring 13 during movement, so that it will not deviate, further improving the accuracy of fixing and ensuring the stable position of the external threaded tube 2 on the steel strand.
[0028] A washer 16 is movably fitted onto the surface of the threaded sleeve 4. A connecting plate 17 is fixedly connected to the front side of the washer 16, and a hanging rod 18 is fixedly connected to the front side of the connecting plate 17. The hanging rod 18 is attached to the surface of the measuring plate 6. The threaded sleeve 4 drives the washer 16, the connecting plate 17, and the hanging rod 18 to move. Combined with the scale line 7 and frequency mark on the measuring plate 6, the position of the hammer head 3 can be accurately adjusted and fixed. When adjusting the position of the hammer head 3, by observing the scale line 7 and frequency mark corresponding to the hanging rod 18, the moving distance of the hammer head 3 and the frequency range corresponding to the current position can be accurately known. According to the actual vibration frequency of the conductor, after moving the hammer head 3 to the appropriate position, the threaded sleeve 4 on the other side is rotated to make it press against the hammer head 3, thereby achieving precise fixing of the hammer head 3.
[0029] The bottom of the lower clamping ring 9 is fixedly connected to a first nut 19, and the top of the upper clamping ring 10 is connected to a first bolt 20. The bottom of the first bolt 20 passes through the upper clamping ring 10, the lower clamping ring 9, and the first nut 19 respectively. The first bolt 20 and the first nut 19 are threaded together. When installing the vibration damper, after the lower clamping ring 9 and the upper clamping ring 10 are placed in the appropriate position on the steel strand 1, the first bolt 20 is simply passed through the upper clamping ring 10, the lower clamping ring 9, and the first nut 19 in sequence. Then, the first bolt 20 is rotated to make it tightly threadedly connected to the first nut 19, thus completing the fixation of the lower clamping ring 9 and the upper clamping ring 10. The fixing method is simple to operate, does not require complicated tools and cumbersome steps, greatly shortens the installation time, and improves the installation efficiency. The threaded connection method has high reliability and stability, which can ensure that the lower clamping ring 9 and the upper clamping ring 10 are firmly fixed on the steel strand 1, providing a solid foundation for the overall installation of the vibration damper.
[0030] Example 2 For further optimizations of Example 1, please refer to [link / reference]. Figures 3-5The damping mechanism 21 includes a first vertical rod 210, a first circular plate 211 fixedly connected to the top of the first vertical rod 210, a second circular plate 212 sleeved on the surface of the first vertical rod 210, a second vertical rod 213 fixedly connected to the top of the second circular plate 212, the top of the second vertical rod 213 penetrating through the first circular plate 211 and movably connected to the first circular plate 211, first springs 214 sleeved on both the upper and lower sides of the surface of the second vertical rod 213, and first dampers 215 fixedly connected to both the front and rear sides of the top of the first circular plate 211, the top of the first dampers 215 fixedly connected to the second circular plate 212, and the second vertical rod 213... A flat plate 216 is fixedly connected to the top. The first circular plate 211 and the second circular plate 212 sleeved on the first vertical rod 210 cooperate to form the first-stage damping unit. When the vibration damper is vibrated, the second circular plate 212 will move relative to the first vertical rod 210. At this time, the first spring 214 sleeved on the upper and lower sides of the second vertical rod 213 plays a role. During the vibration process, the first spring 214 will undergo elastic deformation and absorb part of the vibration energy through its own elastic force. The first damper 215 can use its internal damping medium to dissipate the vibration energy in the form of heat energy, further weakening the vibration intensity.
[0031] A vertical plate 217 is fixedly connected to the top of the flat plate 216. A horizontal bar 218 is connected through the surface of the vertical plate 217. A U-shaped plate 219 is fixedly connected to the top of the horizontal bar 218. A second spring 220 is sleeved on both the front and rear sides of the horizontal bar 218. One side of the second spring 220 is fixedly connected to the vertical plate 217, and the other side of the second spring 220 is fixedly connected to the U-shaped plate 219. When the vibration damper is subjected to lateral vibration, the U-shaped plate 219 will drive the horizontal bar 218 to move relative to the vertical plate 217. The second spring 220 will undergo elastic deformation due to the movement of the U-shaped plate 219, absorbing the lateral vibration energy. The second spring 220 can react quickly when the U-shaped plate 219 moves, and resist the movement of the U-shaped plate 219 through elastic force, thereby weakening the lateral vibration amplitude. This effectively absorbs the vibration of the vibration damper in multiple directions, greatly improving the stability and reliability of the vibration damper under different working conditions.
[0032] A second damper 221 is fixedly connected to both the front and rear sides of the vertical plate 217. The end of the second damper 221 away from the vertical plate 217 is fixedly connected to the U-shaped plate 219. The second damper 221 uses its damping characteristics to dissipate the remaining vibration energy. It can closely follow the movement of the U-shaped plate 219 and suppress the vibration in time. The combination of spring and damper forms a double guarantee in terms of lateral vibration reduction, effectively reducing the vibration amplitude of the U-shaped plate 219 in the lateral direction, thereby improving the vibration reduction performance of the entire vibration damping hammer and enabling it to better cope with various complex vibration situations.
[0033] The top of the U-shaped plate 219 is connected to a lower collar 222 via a support block. An upper collar 223 is set on the top of the lower collar 222. A second nut 225 is fixedly connected to the bottom of the lower collar 222. A second bolt 224 is passed through the top of the upper collar 223. The bottom of the second bolt 224 passes through the upper collar 223 and the second nut 225 respectively and is threadedly connected to the second nut 225. During installation, simply open the upper collar 223 and the lower collar 222, place them on the appropriate position on the power transmission line, and then rotate the second bolt 224 to make it tightly threadedly connected to the second nut 225. This allows the vibration damper to be quickly and firmly fixed to the power transmission line. The operation is simple and convenient, greatly shortening the installation time and improving construction efficiency. The threaded connection between the second bolt 224 and the second nut 225 has high strength and stability, ensuring that the vibration damper will not fall off due to loosening during long-term use, thus guaranteeing the reliable operation of the vibration damper.
[0034] A method for using a frequency-adjustable vibration damper includes the following steps: S1. Place the external threaded tube 2 on the surface of the steel strand 1, rotate the threaded rod 12 to connect with the L-shaped plate 11, so that the threaded rod 12 drives the pressure ring 13 to move downward, the pressure ring 13 presses the steel strand 1, and fixes the external threaded tube 2. Rotate the threaded sleeve 4 to drive the washer 16, the connecting plate 17 and the hanging rod 18 to move, observe the scale line 7 and frequency mark corresponding to the hanging rod 18, move the hammer head 3 to fit against the washer 16, rotate the threaded sleeve 4 on the other side to press against the hammer head 3, and fix the hammer head 3. S2. Place the lower clamping ring 9 and the upper clamping ring 10 at the center of the steel strand 1, and fix the lower clamping ring 9 and the upper clamping ring 10 by passing the first bolt 20 through the first nut 19. Place the upper sleeve ring 223 and the lower sleeve ring 222 on the transmission line, and fix the upper sleeve ring 223 and the lower sleeve ring 222 by passing the second bolt 224 through the second nut 225, thereby fixing and installing the vibration damper. S3. When the vibration damper is vibrated, the second circular plate 212 will move relative to the first vertical rod 210. At this time, the first spring 214 sleeved on the upper and lower sides of the second vertical rod 213 will play a role. During the vibration, the first spring 214 will undergo elastic deformation and absorb part of the vibration energy through its own elastic force. The first damper 215 can use its internal damping medium to dissipate the vibration energy in the form of heat energy, further weakening the vibration intensity. S4. When the anti-vibration hammer is subjected to lateral vibration, the U-shaped plate 219 will drive the horizontal bar 218 to move relative to the vertical plate 217. The second spring 220 will undergo elastic deformation due to the movement of the U-shaped plate 219, absorbing the lateral vibration energy and thus weakening the lateral vibration amplitude. The second damper 221 will use its damping characteristics to consume the remaining vibration energy.
[0035] After adjusting the pendulum length, the natural frequency f of the vibration damper system can be calculated using the following formula:
[0036] Where m is the mass of the hammer, E is the elastic modulus of the steel strand material, I is the moment of inertia of the steel strand section, and L is the pendulum length between the hammer and the clamp.
[0037] It should be noted that any content not described in detail in this specification belongs to the prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.
Claims
1. A frequency-adjustable vibration damper, comprising steel strand (1), characterized in that: Both sides of the surface of the steel strand (1) are fitted with external threaded tubes (2), the surface of the external threaded tubes (2) is fitted with hammers (3), both sides of the surface of the external threaded tubes (2) are fitted with threaded sleeves (4), the surface of the external threaded tubes (2) is fixedly fitted with connecting blocks (5), the surface of the connecting blocks (5) is fixedly connected with measuring plates (6), the top of the front of the measuring plates (6) is provided with scale lines (7), the bottom of the front of the measuring plates (6) is provided with frequency marking areas (8), the surface of the steel strands (1) is fitted with lower clamping rings (9) and upper clamping rings (10), and the top of the upper clamping rings (10) is fixedly connected with a shock-absorbing mechanism (21).
2. The frequency-adjustable vibration damper according to claim 1, characterized in that: Both sides of the external threaded tube (2) are fixedly connected to L-shaped plates (11), the top of the L-shaped plate (11) is connected to a threaded rod (12), and the bottom of the threaded rod (12) is connected to a pressure ring (13) through the L-shaped plate (11).
3. The frequency-adjustable vibration damper according to claim 1, characterized in that: Both sides of the external threaded tube (2) are fixedly connected to support rings (14), the inner wall of the support ring (14) is in contact with the steel strand (1), and the threaded rod (12) is threadedly connected to the L-shaped plate (11).
4. The frequency-adjustable vibration damper according to claim 2, characterized in that: The top of the pressure ring (13) is fixedly connected to a guide rod (15), the top of the guide rod (15) passes through the L-shaped plate (11) and is movably connected to the L-shaped plate (11).
5. The frequency-adjustable vibration damper according to claim 1, characterized in that: The threaded sleeve (4) is movably fitted with a washer (16), and a connecting plate (17) is fixedly connected to the front side of the washer (16). A hanging rod (18) is fixedly connected to the front side of the connecting plate (17), and the hanging rod (18) is hung on the surface of the measuring plate (6).
6. The frequency-adjustable vibration damper according to claim 1, characterized in that: The bottom of the lower clamping ring (9) is fixedly connected to a first nut (19), and the top of the upper clamping ring (10) is connected to a first bolt (20). The bottom of the first bolt (20) passes through the upper clamping ring (10), the lower clamping ring (9) and the first nut (19) respectively. The first bolt (20) and the first nut (19) are threadedly connected.
7. A frequency-adjustable vibration damper according to claim 1, characterized in that: The shock absorption mechanism (21) includes a first vertical rod (210), a first circular plate (211) is fixedly connected to the top of the first vertical rod (210), a second circular plate (212) is sleeved on the surface of the first vertical rod (210), a second vertical rod (213) is fixedly connected to the top of the second circular plate (212), the top of the second vertical rod (213) passes through the first circular plate (211) and is movably connected to the first circular plate (211), a first spring (214) is sleeved on both the upper and lower sides of the surface of the second vertical rod (213), a first damper (215) is fixedly connected to both the front and rear sides of the top of the first circular plate (211), the top of the first damper (215) is fixedly connected to the second circular plate (212), and a flat plate (216) is fixedly connected to the top of the second vertical rod (213).
8. A frequency-adjustable vibration damper according to claim 7, characterized in that: A vertical plate (217) is fixedly connected to the top of the flat plate (216). A horizontal bar (218) is connected through the surface of the vertical plate (217). A U-shaped plate (219) is fixedly connected to the top of the horizontal bar (218). A second spring (220) is sleeved on both the front and rear sides of the horizontal bar (218). One side of the second spring (220) is fixedly connected to the vertical plate (217), and the other side of the second spring (220) is fixedly connected to the U-shaped plate (219).
9. A frequency-adjustable vibration damper according to claim 8, characterized in that: The front and rear sides of the vertical plate (217) are fixedly connected to a second damper (221), and the end of the second damper (221) away from the vertical plate (217) is fixedly connected to the U-shaped plate (219).
10. A frequency-adjustable vibration damper according to claim 9, characterized in that: The top of the U-shaped plate (219) is connected to a lower collar (222) via a support block. The top of the lower collar (222) is provided with an upper collar (223). The bottom of the lower collar (222) is fixedly connected with a second nut (225). The top of the upper collar (223) is connected through a second bolt (224). The bottom of the second bolt (224) passes through the upper collar (223) and the second nut (225) respectively and is threadedly connected to the second nut (225).