Vibration damping protection devices and their installation methods

Abstract

This invention relates to the field of bridge construction technology, specifically disclosing a vibration damping protection device and its installation method, used for installation between a cable and a sleeve. It includes a vibration damping assembly and further comprises: a sealing core, the sealing core having a covering core column for covering the cable; an outer cover, the outer cover having sealing sections and an outer cover section at both ends, the sealing sections being fitted over the covering core column, and the outer cover section for covering the sleeve; the vibration damping assembly includes a vibration damping cylinder, the vibration damping cylinder being fitted over the covering core column, the inner side of the vibration damping cylinder having vibration damping capsules distributed therein, and the outer wall of the vibration damping cylinder forming a contact surface for abutting against the inner wall of the sleeve; the covering core column, the outer cover, and the vibration damping cylinder are all made of elastomeric sealing materials. The protection device has excellent waterproof sealing effect and can effectively improve the vibration damping effect.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a vibration damping protection device and its installation method. Background Technology

[0002] The stay cable is one of the three major load-bearing components of a cable-stayed bridge, responsible for transferring the service load and the self-weight of the main girder to the main tower. Due to the characteristics of the stay cable, such as large slenderness ratio, small mass, high flexibility, and low damping, the stay cable is prone to various vibrations under external environmental excitation. These vibrations can easily lead to problems such as fatigue fracture of the stay cable, fretting damage, and damage to the protective devices of the stay cable, thus shortening the service life of the stay cable. For concrete cable-stayed bridges, wind vibration of the stay cable can also cause fatigue cracking of the concrete at the root of the cable.

[0003] In existing technology, the cable is anchored to the main beam of the bridge within a sleeve via anchorages. A ring-shaped rubber damper is fitted between the sleeve and the cable, and the rubber damper is wrapped with an airbag. A waterproof coating is then applied to seal the sleeve. The drawbacks of this structure are twofold: First, minor gaps inevitably exist during the installation of the airbag, resulting in poor waterproof sealing performance and poor connection tightness with the cable, making it difficult to fully transmit the cable's vibration and affecting the vibration reduction effect. Furthermore, the rubber damper ages over time, causing the connection between the damper, sleeve, and airbag to loosen, further weakening the vibration reduction effect. Second, gaps easily form at the junction of the cable and the waterproof coating, allowing rainwater to easily seep into the sleeve, leading to water accumulation in the anchorages and causing corrosion. Summary of the Invention

[0004] The purpose of this invention is to provide a vibration damping and protective device and its installation method that has excellent waterproof sealing effect and can effectively improve vibration reduction effect, in view of the existing technical status.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] On one hand, the present invention provides a vibration damping protection device for installation between a cable and a sleeve, including a vibration damping component, and further comprising:

[0007] A sealing core, wherein the sealing core is provided with a covering core post for covering the cable;

[0008] The outer cover has a sealing section and an outer cover section at its two ends. The sealing section is sleeved over the core column, and the outer cover section is used to cover the outside of the sleeve.

[0009] The vibration damping assembly includes a vibration damping cylinder, which is sleeved outside the covering core column. Vibration damping capsules are distributed on the inner side of the vibration damping cylinder, and the outer wall of the vibration damping cylinder forms a mating surface for abutting against the inner wall of the sleeve.

[0010] The core column, the outer cover, and the vibration damping cylinder are all elastomeric sealing materials.

[0011] In some preferred embodiments, the inner side of the core column is further provided with an adhesive layer, and the inner wall of the core column is provided with a strip-shaped groove. The bottom of the strip-shaped groove is connected to an injection hole for injecting adhesive, and the injection hole extends from the bottom of the strip-shaped groove to the outer wall of the core column.

[0012] In some preferred embodiments, the covered core column includes at least two splicing units arranged in the circumferential direction, and the splicing seam between adjacent splicing units has a toothed structure in the direction parallel to the axis of the covered core column.

[0013] In some preferred embodiments, the splicing unit is provided with a splicing end face, and the splicing end face is provided with staggered protrusions and recesses along the direction parallel to the axis of the covering core column. The protrusions are provided with locking blocks, and the recesses are provided with grooves. On the splicing end faces where adjacent splicing units are spliced ​​together, the locking blocks on each splicing unit engage with the grooves on another splicing unit.

[0014] In some preferred embodiments, the core column is provided with a waterproof rib, the waterproof rib is a frustoconical structure, and the core column is fitted with a sealing ring, the sealing ring is located at one end of the waterproof rib near the vibration damping cylinder, the sealing section is fitted outside the sealing ring, and the lower bottom surface of the frustoconical structure abuts against the outer cover.

[0015] In some preferred embodiments, the vibration damping cylinder includes at least two circumferentially arranged split units. Each split unit has a docking end face, and the docking end face has a recessed half-groove. The half-groove has an inclined adjustment end face, and the corresponding half-grooves on adjacent split units together form a deformation groove. The covering core column is connected to an adjustment guide rod corresponding to the number of deformation grooves. The adjustment guide rod is arranged parallel to the axis of the vibration damping cylinder and is located in the deformation groove. The cross-section of the adjustment guide rod is a fan-shaped ring structure, and the adjustment guide rod has an adjustment slope that abuts against the inclined adjustment end face. The adjustment slope is inclined from the direction away from the covering core column toward the direction closer to the inclined adjustment end face, and the inclination direction of the inclined adjustment end face is consistent with the inclination direction of the adjusting slope that abuts against it.

[0016] In some preferred embodiments, the vibration damping assembly further includes a telescopic ring for connecting the various sub-units. The telescopic ring is arranged perpendicularly to the axis of the vibration damping cylinder. The telescopic ring includes a first half-ring and a second half-ring. The first half-ring has inserts at both ends, and the second half-ring has both ends inserted into the inserts. The mating end face is provided with an outer ring layer and an inner ring layer in sequence along the radial inward direction of the vibration damping cylinder. The semi-groove is provided on the inner ring layer. The outer ring layer has an extension section that extends beyond the inner ring layer. The extension section is located at one end of the vibration damping cylinder near the covering core column, and the extension section has a connecting hole through which the telescopic ring passes.

[0017] In some preferred embodiments, the telescopic ring extends outward in the radial direction to form a guide rod, the outer cover is provided with a guide limiting groove arranged in the axial direction, and the guide rod is slidably disposed in the guide limiting groove.

[0018] In some preferred embodiments, the vibration damping capsule is a spherical structure, and the vibration damping capsule is an elastic energy-absorbing material modified based on a piezoelectric composite and / or a shear-thickening material, wherein the piezoelectric composite is composed of piezoelectric particles and conductive particles.

[0019] On the other hand, the present invention also provides an installation method for the above-mentioned vibration damping protection device, comprising:

[0020] The core column is fitted onto the cable, and the damping cylinder is fitted onto the outside of the core column.

[0021] An adhesive is injected into the core column, and after the adhesive solidifies, the vibration damping cylinder is squeezed into the sleeve.

[0022] The sealing section of the outer cover is fitted over the core column.

[0023] The beneficial effects of this invention are as follows:

[0024] The protective device of this invention, through the combined action of the core column and the outer cover, effectively prevents external rainwater from seeping into the sleeve. Furthermore, the core column and the damping cylinder form a unified whole after assembly, deforming accordingly when the cable vibrates, thus ensuring overall waterproof performance and providing excellent overall waterproofing. On the other hand, by tightly wrapping the cable with the core column, the bonding force between the damping component and the cable is increased. Simultaneously, the damping component employs a dual damping structure of damping capsule and damping cylinder, allowing it to more fully transmit and absorb the cable's vibration, effectively improving the overall damping effect. Moreover, maintenance and replacement are simple and convenient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the vibration damping and protection device of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the vibration damping and protection device of the present invention with part of the outer cover removed.

[0027] Figure 3 This is a schematic diagram of the structure of the vibration damping and protection device of the present invention, with part of the outer cover and part of the vibration damping cylinder removed.

[0028] Figure 4 This is an exploded view of the sealing core component of the present invention.

[0029] Figure 5 This is a side view of the present invention.

[0030] Figure 6 This is a schematic diagram of the docking unit of the present invention.

[0031] Figure 7 This is a cross-sectional view of the outer casing of the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the telescopic ring component of the present invention. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0034] Please see Figure 1 , Figure 2 Figure 3 and Figure 7 As shown, this embodiment discloses a vibration damping protection device for installation between the cable and the sleeve, including a vibration damping component 3, and further including:

[0035] Sealing core 1, the sealing core 1 is provided with a covering core post 11 for covering the cable;

[0036] The outer cover 2 has a sealing section 21 and an outer cover section 22 at its two ends. The sealing section 21 is sleeved over the core column 11, and the outer cover section 22 is used to cover the outside of the sleeve.

[0037] The vibration damping assembly 3 includes a vibration damping cylinder 31, which is sleeved outside the covering core column 11. Vibration damping capsules 32 are distributed on the inner side of the vibration damping cylinder 31, and the outer wall of the vibration damping cylinder 31 forms a mating surface 311 for abutting against the inner wall of the sleeve.

[0038] The core column 11, the outer cover 2, and the vibration damping cylinder column 31 are all elastomeric sealing materials. The elastomeric sealing material can be rubber, and the rubber can be any one or more combinations of natural rubber, nitrile rubber, ethylene propylene rubber, silicone rubber, or polyurethane rubber, but is not limited to these.

[0039] The vibration damping capsule 32 can be pre-installed on the inner wall of the vibration damping cylinder 31. For example, one end of the vibration damping capsule 32 can be embedded in the receiving groove by opening a receiving groove in the inner wall of the vibration damping cylinder 31, or the vibration damping capsule 32 can be fixed on the inner wall of the vibration damping cylinder 31 by hot melting, gluing or other methods. However, it is not limited to these methods. It is only necessary to ensure that the vibration damping capsule 32 is firmly distributed on the inner side of the vibration damping cylinder 31. Preferably, the relative distance between the inner wall of the vibration damping cylinder 31 and the sealing core 1 is smaller than the diameter of the vibration damping capsule 32, so that the vibration damping assembly 3 is tightly squeezed between the cable and the sleeve after installation.

[0040] Regarding waterproofing, the protective device in this embodiment features a core column 11 covering the outside of the cable, tightly encasing it. Since the core column 11 is made of an elastomeric sealing material, the junction between the core column 11 and the cable remains tightly sealed, effectively preventing rainwater from seeping into the sleeve along the cable. Furthermore, an outer cover 2 is fitted over the core column 11 via a sealing section 21. Because both the core column 11 and the outer cover 2 are made of elastomeric sealing material, they are tightly connected after fitting together, forming a single unit. It effectively prevents rainwater from seeping into the sleeve through the junction between the core column 11 and the outer cover 2; at the same time, the outer cover 2 is provided with an outer cover section 22, which covers the outside of the sleeve, preventing rainwater from seeping into the sleeve through the opening of the sleeve. Thus, under the combined action of the core column 11 and the outer cover 2, it effectively prevents external rainwater from seeping into the sleeve. Moreover, the core column 11 and the vibration damping cylinder column 31 are both elastomeric sealing materials, which can form a whole after assembly. When the cable vibrates, it can also deform accordingly, always ensuring the overall waterproof performance and the overall waterproof effect is excellent.

[0041] In terms of vibration reduction, on the one hand, the core column 11 tightly wraps around the cable, forming a whole with the cable. The damping cylinder 31 is connected to the cable via the core column 11. Since the core column 11 and the damping cylinder 31 are both elastomeric sealing materials, the damping cylinder 31 and the core column 11 are tightly bonded, thereby increasing the bonding force between the damping component 3 and the cable. The stronger bonding force between the damping component 3 and the cable allows the damping component 3 to more fully transmit and consume the vibration of the cable. On the other hand, multiple independent damping capsules 32 are distributed inside the damping cylinder 31. After assembly, the damping cylinder 31 and the damping capsules 32 are tightly pressed between the cable and the sleeve. The damping component 3, the core column 11, the sleeve, and the cable form a whole. When the cable vibrates, the damping capsules 32 and the damping cylinder 31 transmit and consume the vibration of the cable, effectively improving the overall vibration reduction effect.

[0042] The protective device of the present invention, under the combined action of the core column 11 and the outer cover 2, effectively prevents external rainwater from seeping into the sleeve. Moreover, the core column 11 and the vibration damping cylinder 31 can form a whole after assembly, and can also deform accordingly when the cable vibrates, always ensuring the overall waterproof performance and excellent overall waterproof effect. On the other hand, by tightly wrapping the cable with the core column 11, the bonding force between the vibration damping component 3 and the cable is increased. At the same time, the vibration damping component 3 adopts a dual vibration damping structure of vibration damping capsule 32 and vibration damping cylinder 31, so that the vibration damping component 3 can more fully transmit and consume the vibration of the cable, effectively improving the overall vibration damping effect, and is simple and convenient to maintain and replace.

[0043] See Figure 3 and Figure 4 As shown, an adhesive layer is also provided on the inner side of the core column 11, and a strip groove 111 is provided on the inner wall of the core column 11. In this embodiment, the cross-section of the strip groove 111 is arc-shaped, and multiple strip grooves 111 are distributed at intervals along the axial direction of the core column 11. The bottom of the strip groove 111 is connected to an injection hole 112 for injecting adhesive. The injection hole 112 extends from the bottom of the strip groove 111 to the outer wall of the core column 11. The adhesive can be any one or more combinations of epoxy structural adhesive, acrylic structural adhesive, polyurethane structural adhesive or silicone structural adhesive.

[0044] After the core column 11 is installed at the corresponding position of the cable, adhesive is injected through the injection hole 112. The adhesive enters the strip groove 111 through the injection hole 112. After the adhesive solidifies, it can form an adhesive layer between the core column 11 and the cable, which further increases the bonding force and sealing performance between the core column 11 and the cable, thereby achieving better waterproof and vibration reduction effects.

[0045] See Figure 3 and Figure 4 As shown, the core column 11 includes at least two splicing units 13 arranged in the circumferential direction. The splicing seam between adjacent splicing units 13 has a toothed structure in the direction parallel to the axis of the core column 11. In this embodiment, the core column 11 is spliced ​​by two splicing units 13. The splicing seam adopts a toothed structure. On the one hand, it can increase the splicing contact area between adjacent splicing units 13 and enhance the splicing firmness. On the other hand, the interlaced structure of the toothed structure can improve the waterproof effect of the splicing seam.

[0046] See Figure 4As shown, the splicing unit 13 has a splicing end face 131. Along the axis parallel to the core column 11, the splicing end face 131 has staggered protrusions 132 and recesses 133. The protrusions 132 have protruding locking blocks 134, and the recesses 133 have recessed grooves 135. On the splicing end faces 131 where adjacent splicing units 13 are spliced ​​together, the locking blocks 134 on each splicing unit 13 engage with the grooves 135 on another splicing unit 13. The core column 11 is formed by splicing multiple splicing units 13, avoiding the need to insert the core column 11 from the end of the cable, making the installation of the core column 11 more convenient. The staggered arrangement of 132 and recess 133 serves two purposes: firstly, it provides initial positioning, and secondly, it facilitates the formation of a toothed splicing seam by utilizing the engagement between the subsequent locking block 134 and the groove 135. In this embodiment, the splicing unit 13 includes a first splicing unit and a second splicing unit. The locking block 134 on the splicing end face 131 of the first splicing unit engages with the groove 135 on the corresponding side splicing end face 131 of the second splicing unit.

[0047] See Figure 3 As shown, the core column 11 is provided with a waterproof rib 113, which has a frustum structure. The core column 11 is fitted with a sealing ring 114, which is located at one end of the waterproof rib 113 near the vibration damping cylinder column 31. The sealing section 21 is fitted outside the sealing ring 114. The bottom surface of the frustum structure abuts against the outer cover 2. By making the waterproof rib 113 a frustum structure, the inclined outer wall of the frustum structure can guide rainwater to the outside. At the same time, the bottom surface of the frustum structure abuts against the outer cover 2, which can not only play a sealing role, but also improve the connection between the core column 11 and the outer cover 2. The sealing ring 114 is set between the sealing section 21 and the core column 11 to further improve the sealing performance and the connection between the core column 11 and the outer cover 2.

[0048] See Figure 3 , Figure 4 and Figure 6As shown, the vibration damping cylinder 31 includes at least two split units 33 arranged in the circumferential direction. Each split unit 33 has a docking end face 331, and the docking end face 331 has a recessed half-groove 332. The half-groove 332 has an inclined adjustment end face 333. The corresponding half-grooves 332 on adjacent split units 33 together form a deformation groove. The core column 11 is connected to an adjustment guide rod 12 corresponding to the number of deformation grooves. The adjustment guide rod 12 is arranged parallel to the axis of the vibration damping cylinder 31 and is located in the deformation groove. The cross-section of the adjustment guide rod 12 is a fan-shaped ring structure, and the adjustment guide rod 12 has an adjustment slope 121 that abuts against the inclined adjustment end face 333. The adjustment slope 121 is inclined from the direction away from the core column 11 toward the direction close to the inclined adjustment end face 333. The inclination direction of the inclined adjustment end face 333 is consistent with the inclination direction of the adjustment slope 121 that abuts against it.

[0049] After the waterproof device has been used for a period of time, if the vibration damping component 3 ages or is unable to be tightly squeezed between the sealing core 1 and the sleeve due to external forces, the split unit 33 is pressed down. Under the guidance of the adjusting guide rod 12, the split unit 33 is squeezed by the adjusting inclined surface 121 and moves outward along the radial direction of the covering core column 11 while moving downward. The relative distance between the split units 33 changes and spreads outward, thereby making the entire vibration damping component 3 tightly squeezed between the sealing core 1 and the sleeve again. In addition, during installation, the adjusting action of the adjusting guide rod 12 can be used to adjust the tightness of the compression of the vibration damping component 3 in the sleeve. Through the mutual cooperation between the adjusting inclined surface 121 of the adjusting guide rod 12 and the tilt adjusting end face 333 of the split unit 33, the purpose of adjusting the damping adjustment force and damping magnitude of the vibration damping component 3 can be achieved.

[0050] See Figure 3 and Figure 8 As shown, the vibration damping assembly 3 also includes a telescopic ring 34 for connecting each split unit 33. The telescopic ring 34 is arranged perpendicularly to the axis of the vibration damping cylinder 31. The telescopic ring 34 includes a first half-ring 341 and a second half-ring 342. The first half-ring 341 has inserts 343 at both ends, and the second half-ring 342 is inserted into the inserts 343 at both ends. The inserts 343 have a certain depth to ensure that the telescopic ring 34 can adjust with the relative distance between the split units 33. The expansion joint is provided with an outer ring layer and an inner ring layer in sequence along the radial direction of the vibration damping cylinder 31 on the mating end face 331. The semi-groove body 332 is provided on the inner ring layer. The outer ring layer is provided with an extension section 334 that is higher than the inner ring layer. The extension section 334 is provided at one end of the vibration damping cylinder 31 near the covering core column 11. The extension section 334 is provided with a connecting hole for the expansion ring 34 to pass through. The expansion ring 34 serves as a connection on the one hand and a positioning on the other hand, ensuring that each split unit 33 is set in the circumferential direction.

[0051] See Figure 1, Figure 7 and Figure 8 As shown, the telescopic ring 34 extends outward in the radial direction to form a guide rod 344. The outer cover 2 is provided with a guide limiting groove 23 arranged in the axial direction. The guide rod 344 is slidably disposed in the guide limiting groove 23. When the outer cover 2 moves, the movement of the outer cover 2 can be limited by the mutual cooperation between the guide rod 344 and the guide limiting groove 23, so as to ensure that the outer cover 2 always moves in the axial direction of the covering core column 11, and to ensure the tightness of the connection between the outer cover 2 and the covering core column 11.

[0052] The vibration damping capsule 32 has a spherical structure and is an elastic energy-absorbing material modified based on a piezoelectric composite and / or a shear thickening material. The piezoelectric composite is composed of piezoelectric particles and conductive particles. For example, the elastic energy-absorbing material modified based on the piezoelectric composite and / or the shear thickening material can be a blend of shear thickening gel and polyurethane, or a blend of silica nanospheres, shear thickening gel and polyurethane, or a foamed material made by mixing shear thickening gel and silicone rubber, or a piezoelectric damping rubber material.

[0053] Conventional rubber materials have limited vibration damping effects and are relatively temperature-dependent. Their damping capacity decreases when the glass transition temperature range is exceeded. In this embodiment, the vibration damping capsule 32 is an elastic energy-absorbing material modified with piezoelectric composites and / or shear-thickening materials. When subjected to external vibration, the piezoelectric composite-modified elastic energy-absorbing material can convert mechanical energy into electrical energy through piezoelectric particles and electrical energy into heat through conductive particles. This broadens the damping temperature range based on different vibration damping mechanisms, allowing the protective device to maintain a stable and effective vibration damping effect even when the external temperature changes. The shear-thickening material imparts shear-thickening properties to the elastic energy-absorbing material, increasing its strength and consuming more mechanical energy when subjected to external impact. This not only broadens the damping temperature range but also enhances the vibration damping capacity.

[0054] This embodiment also discloses an installation method for the above-mentioned vibration damping protection device, including:

[0055] S10. Sleeve the core column 11 onto the cable, and then sleeve the damping cylinder column 31 onto the outside of the core column 11;

[0056] S20. Inject adhesive into the core column 11, and after the adhesive solidifies, squeeze the damping cylinder 31 into the sleeve so that the damping cylinder 31, the core column 11 and the sleeve become a whole, thereby fully transmitting the cable vibration.

[0057] S30. The sealing section 21 of the outer cover 2 is fitted over the core column 11.

[0058] The protective device is easy to install, has excellent waterproofing after installation, and can effectively transmit and absorb cable vibrations, providing excellent vibration damping.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A vibration damping protection device for installation between a cable and a sleeve, comprising a vibration damping assembly, characterized in that, Also includes: A sealing core, wherein the sealing core is provided with a covering core post for covering the cable; The outer cover has a sealing section and an outer cover section at its two ends. The sealing section is sleeved over the core column, and the outer cover section is used to cover the outside of the sleeve. The vibration damping assembly includes a vibration damping cylinder, which is sleeved outside the covering core column. Vibration damping capsules are distributed on the inner side of the vibration damping cylinder, and the outer wall of the vibration damping cylinder forms a mating surface for abutting against the inner wall of the sleeve. The core column, the outer cover, and the vibration damping cylinder are all elastomeric sealing materials. The vibration damping cylinder column includes at least two split units arranged circumferentially. Each split unit has a docking end face, and the docking end face has a recessed half-groove. The half-groove has an inclined adjustment end face, and the corresponding half-grooves on adjacent split units together form a deformation groove. The covering core column is connected to an adjustment guide rod corresponding to the number of deformation grooves. The adjustment guide rod is arranged parallel to the axis of the vibration damping cylinder column and is located in the deformation groove. The cross-section of the adjustment guide rod is a fan-shaped ring structure, and the adjustment guide rod has an adjustment slope that abuts against the inclined adjustment end face. The adjustment slope is inclined from the direction away from the covering core column towards the direction close to the inclined adjustment end face. The inclination direction of the inclined adjustment end face is consistent with the inclination direction of the adjusting slope that abuts against it. In the axial direction of the covering core column, the width of the adjustment guide rod increases from the direction away from the covering core column.

2. The vibration damping and protection device according to claim 1, characterized in that, The inner side of the core column is also provided with an adhesive layer, and the inner wall of the core column is provided with a strip-shaped groove. The bottom of the groove is connected to an injection hole for injecting adhesive, and the injection hole extends from the bottom of the groove to the outer wall of the core column.

3. The vibration damping and protection device according to claim 1, characterized in that, The encapsulated core column includes at least two splicing units arranged in the circumferential direction, and the splicing seam between adjacent splicing units has a tooth-like structure in the direction parallel to the axis of the encapsulated core column.

4. The vibration damping and protection device according to claim 3, characterized in that, The splicing unit is provided with a splicing end face. The splicing end face is provided with staggered protrusions and recesses along the direction parallel to the axis of the covering core column. The protrusions are provided with locking blocks, and the recesses are provided with grooves. On the splicing end faces where adjacent splicing units are spliced ​​together, the locking blocks on each splicing unit engage with the grooves on the other splicing unit.

5. The vibration damping and protection device according to claim 1, characterized in that, The core column is provided with a waterproof rib, which is a frustum-shaped structure. The core column is fitted with a sealing ring, which is located at one end of the waterproof rib near the vibration damping cylinder. The sealing section is fitted outside the sealing ring, and the bottom surface of the frustum-shaped structure abuts against the outer cover.

6. The vibration damping and protection device according to claim 1, characterized in that, The vibration damping assembly also includes a telescopic ring for connecting the various sub-units. The telescopic ring is arranged perpendicularly to the axis of the vibration damping cylinder. The telescopic ring includes a first half-ring and a second half-ring. The first half-ring has inserts at both ends, and the second half-ring has both ends inserted into the inserts. The mating end face has an outer ring layer and an inner ring layer arranged in sequence along the radial inward direction of the vibration damping cylinder. The semi-groove is disposed on the inner ring layer. The outer ring layer has an extension section that extends beyond the inner ring layer. The extension section is located at one end of the vibration damping cylinder near the covering core column, and the extension section has a connecting hole through which the telescopic ring passes.

7. The vibration damping and protection device according to claim 6, characterized in that, The telescopic ring extends outward in the radial direction to form a guide rod, and the outer cover is provided with a guide limiting groove arranged in the axial direction. The guide rod is slidably disposed in the guide limiting groove.

8. The vibration damping and protection device according to claim 1, characterized in that, The vibration damping capsule has a spherical structure and is an elastic energy-absorbing material modified based on a piezoelectric composite and / or a shear-thickening material. The piezoelectric composite is composed of piezoelectric particles and conductive particles.

9. A method for installing a vibration damping and protective device according to any one of claims 1 to 8, characterized in that, include: The core column is fitted onto the cable, and the damping cylinder is fitted onto the outside of the core column. An adhesive is injected into the core column, and after the adhesive solidifies, the vibration damping cylinder is squeezed into the sleeve. The sealing section of the outer cover is fitted over the core column.

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