A wear-resistant and fatigue-resistant conductor anti-vibration hammer

Abstract

The application discloses a wear-resistant and fatigue-resistant conductor anti-vibration hammer and relates to the technical field of anti-vibration hammers. The wear-resistant and fatigue-resistant conductor anti-vibration hammer comprises a wire clamp assembly, a hammer head assembly and a locking assembly. The wire clamp assembly comprises a wire clamp body and a wire clamp pressing plate. The upper end of the wire clamp body is hingedly connected with one end of the wire clamp pressing plate. The wire clamp body and the other end of the wire clamp pressing plate are fixed through the locking assembly. The hammer head assembly comprises a steel strand and a hammer head body. The composite protective lining of the application is arranged in the clamping groove of the conductor arc-shaped groove. The working surface layer is a composite coating of ultrahigh molecular weight polyethylene and molybdenum disulfide. When the conductor and the working surface layer are subjected to fretting slip, the fluorosilicon lubricating grease in the micro-texture oil storage pit is slowly separated along the pit edge under the action of shearing stress, and a continuous lubricating film is formed between the conductor and the working surface layer, thereby avoiding the direct contact and wear between the aluminum strand of the conductor and the metal matrix of the wire clamp.

Description

Technical Field

[0001] This invention relates to the field of vibration damper technology, and in particular to a wear-resistant and fatigue-resistant conductor vibration damper. Background Technology

[0002] Overhead transmission line conductors are prone to aerodynamic vibrations under wind conditions. Prolonged vibration can lead to fatigue breakage of strands at suspension points due to periodic bending, seriously threatening the safe operation of the power grid. Vibration dampers are currently the most widely used conductor vibration reduction devices. They suppress conductor vibration by using the oscillation of the hammer head to dissipate energy through friction between the steel strands. However, existing vibration dampers still have the following technical shortcomings in actual operation: First, the inner wall of the arc-shaped groove of the traditional wire clamp is a smooth metal surface, making direct and rigid contact with the wire. Under strong wind conditions, slight slippage occurs between the wire and the clamp, leading to severe wear and even breakage of the outer aluminum strands of the wire over long-term operation. Second, in the existing structure, the steel strand is connected to the hammer head via an interference fit after being sleeved with steel pipes at both ends. When the hammer head swings, the steel strand is subjected to severe alternating bending stress at the outlet of the steel pipe. This location abruptly transitions from the rigid constraint of the steel pipe to a completely free state, resulting in a sudden change in the bending radius and a stress concentration factor as high as 3.0 to 4.0. This is the most likely location for fatigue breakage of the steel strand, and in severe cases, it can cause the hammer head to detach, endangering the safety of the line and the facilities below. Summary of the Invention

[0003] The purpose of this invention is to provide a wear-resistant and fatigue-resistant conductor vibration damper. A composite protective liner is disposed in the engagement groove of the conductor arc groove. When the conductor and the working surface layer undergo micro-slippage, the fluorosilicone grease in the micro-textured oil reservoir is slowly precipitated along the edge of the reservoir under shear stress, forming a continuous lubricating film between the conductor and the working surface layer. This avoids direct contact wear between the aluminum strands of the conductor and the metal substrate of the clamp, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A wear-resistant and fatigue-resistant conductor vibration damper includes a clamp assembly, a hammer head assembly, and a locking assembly. The clamp assembly includes a clamp body and a clamp pressure plate. The upper end of the clamp body is hinged to one end of the clamp pressure plate, and the other end of the clamp body and the clamp pressure plate are fixed by the locking assembly. The hammer head assembly includes a steel strand and a hammer head body. The middle position of the steel strand passes through a through hole at the lower end of the clamp body and is fixedly connected to the clamp body. The two ends of the steel strand are connected to the hammer head body. Both the clamp body and the clamp pressure plate are provided with arc-shaped grooves for conductors. The arc-shaped grooves for conductors are provided with engagement grooves, and a composite protective liner is provided in the engagement grooves.

[0005] Preferably, the two arc-shaped sidewalls of the locking groove are conical structures, and the two sides of the composite protective liner are provided with conical sidewalls that match the locking groove. A notch is opened on one side of the locking groove, and the length of the notch is less than that of the locking groove.

[0006] Preferably, the composite protective liner has an arc-shaped sheet structure, and the composite protective liner includes a base layer, an intermediate elastic layer and a working surface layer. The surface of the working surface layer is provided with micro-textured oil storage pits, and the pits are filled with lubricating medium.

[0007] Preferably, the base layer uses spring steel sheets with a surface roughened by sandblasting as a supporting skeleton, and the steel sheets have through holes with a diameter of 2 to 3 mm evenly distributed on them; the middle elastic layer is a hydrogenated nitrile rubber matrix, with 8% to 12% aramid short fibers embedded inside as a reinforcing skeleton, and is combined with the base layer by compression molding and vulcanization process, with the rubber passing through the through holes of the steel sheet to form a rivet-type anchor.

[0008] Preferably, the working surface layer is a composite coating of ultra-high molecular weight polyethylene and molybdenum disulfide, with a molybdenum disulfide mass fraction of 10% to 20%; the microtextured oil storage pits have a diameter of 80 to 120 μm, a depth of 15 to 25 μm, are uniformly distributed in a honeycomb pattern, and have an areal density of 15% to 25%.

[0009] Preferably, a steel pipe fixing hole is provided at the connection position between the hammer head body and the steel strand, and a steel pipe body is installed in the steel pipe fixing hole, and the steel pipe body is crimped with the steel strand.

[0010] Preferably, the end of the steel pipe body away from the lead seal is provided with a flared opening, and a conical stress relief structure is provided inside the flared opening.

[0011] Preferably, the hammer head body has a coaxial annular cavity around the axis of the steel pipe fixing hole, the annular cavity is filled with damping material, and the cross-section of the annular cavity is rectangular or trapezoidal.

[0012] Preferably, the locking assembly includes a bolt and a flat washer, a spring washer and a nut sequentially fitted on the bolt. The bolt passes through the fastening hole of the clamp body and then exits through the U-shaped groove of the clamp pressure plate. A hexagonal countersunk nut hole is provided on the fastening hole, and the nut of the bolt is engaged in the countersunk nut hole.

[0013] Preferably, the upper end of the wire clamp body is provided with a hinge seat, one end of the wire clamp pressure plate is provided with a hinge block, and a hinge pin passing through the hinge block is interference-connected to the hinge seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The composite protective liner of the present invention is disposed in the engagement groove of the arc groove of the conductor. The working surface layer is a composite coating of ultra-high molecular weight polyethylene and molybdenum disulfide. When the conductor and the working surface layer undergo slight slippage, the fluorosilicone grease in the micro-textured oil storage pit slowly precipitates along the edge of the pit under the action of shear stress, forming a continuous lubricating film between the conductor and the working surface layer. This avoids direct contact wear between the aluminum strand of the conductor and the metal substrate of the clamp. The notch opened on one side of the engagement groove allows the composite protective liner to be pried out and replaced separately after wear, without having to replace the entire clamp, which greatly reduces maintenance costs.

[0015] 2. The conical stress relief structure of the present invention is set inside the flared mouth of the steel pipe body, so that the constraint stiffness of the steel strand at the outlet of the steel pipe gradually decreases along the axial direction, eliminating the stress concentration section caused by the sudden change of constraint state in the traditional structure, and delaying the generation and propagation of fatigue cracks in the steel strand at the outlet of the steel pipe.

[0016] 3. The high-damping silicone gel filled in the annular cavity of the present invention generates shear viscous internal friction through the relative angular displacement between the steel pipe body and the inner wall of the cavity when the hammer swings, converting the impact energy into heat energy dissipation, reducing the stress peak value transmitted to the steel pipe body and the steel strand crimping interface, and avoiding slippage or loosening of the crimping interface due to instantaneous overload. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the wear-resistant and fatigue-resistant conductor vibration damper of the present invention. Figure 2 This is a radial cross-sectional view of the present invention along the steel strand; Figure 3 This is a cross-sectional view of the wire clamp body and the wire clamp pressure plate of the present invention; Figure 4 This is a cross-sectional view of the composite protective liner of the present invention; Figure 5 This is a cross-sectional view along the axial direction of the steel strand of the present invention; Figure 6 This is a cross-sectional view of the hammerhead body of the present invention; Figure 7 This is a cross-sectional view of the steel pipe body of the present invention; Figure 8 This is a comparison curve of the power characteristics of the vibration damper before and after fatigue in this invention; Figure 9 This is a comparison curve of the power characteristics of the vibration damper before and after fatigue according to the present invention.

[0018] In the diagram: 1. Wire clamp body; 11. Hinge seat; 12. Hinge pin; 13. Wire arc groove; 131. Engaging groove; 1311. Notch; 14. Fastening hole; 15. Composite protective liner; 151. Base layer; 152. Intermediate elastic layer; 153. Working surface layer; 2. Wire clamp pressure plate; 21. Hinge block; 22. U-shaped groove; 3. Steel strand; 4. Hammer head body; 41. Steel pipe fixing hole; 42. Steel pipe body; 421. Trumpet mouth; 43. Lead seal; 44. Conical stress relief structure; 45. Annular cavity; 5. Locking assembly; 51. Bolt; 52. Flat washer; 53. Spring washer; 54. Nut. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-7 A wear-resistant and fatigue-resistant conductor vibration damper includes a wire clamp assembly, a hammer head assembly, and a locking assembly 5. The wire clamp assembly includes a wire clamp body 1 and a wire clamp pressure plate 2. The upper end of the wire clamp body 1 is hinged to one end of the wire clamp pressure plate 2. The other end of the wire clamp body 1 and the wire clamp pressure plate 2 are fixed by the locking assembly. The hammer head assembly includes a steel strand 3 and a hammer head body 4. The middle position of the steel strand 3 passes through the lower end through hole of the wire clamp body 1 and is fixedly connected to the wire clamp body 1. The two ends of the steel strand 3 are connected to the hammer head body 4.

[0021] Specifically, the upper end of the clamp body 1 is provided with a hinge seat 11, and one end of the clamp pressure plate 2 is provided with a hinge block 21. The hinge block 21 cooperates with the hinge seat 11. A hinge pin 12 is interference-fitted through the hinge block 21 on the hinge seat 11. The clamp pressure plate 2 rotates at the hinge pin 12 through the hinge block 21 to prevent the clamp pressure plate 2 from separating from the clamp body 1, which facilitates installation. In addition, both the clamp body 1 and the clamp pressure plate 2 are provided with wire arc grooves 13. The clamp body 1 is provided with a fastening hole 14 near the lower position of the wire arc groove 13. The clamp pressure plate 2 is provided with a U-shaped groove 22 near the lower position of the wire arc groove 13. The locking assembly 5 connects the clamp body 1 and the clamp pressure plate 2 through the fastening hole 14 and the U-shaped groove 22.

[0022] Furthermore, the locking assembly 5 includes a bolt 51 and a flat washer 52, a spring washer 53, and a nut 54 sequentially fitted onto the bolt 51. The bolt 51 passes through the fastening hole 14 and then through the U-shaped groove 22. The end of the bolt 51 near the U-shaped groove 22 is inserted into the flat washer 52, the spring washer 53, and the nut 54. Tightening the nut 54 pushes the U-shaped groove 22 closer to the fastening hole 14, thereby closing the clamp body 1 and the clamp pressure plate 2. The fastening hole 14 is provided with a hexagonal countersunk nut hole. The nut of the bolt 51 is engaged in the countersunk nut hole of the fastening hole 14 to prevent the bolt 51 from rotating.

[0023] More specifically, the arc-shaped groove 13 on the wire clamp body 1 and the arc-shaped groove 13 on the wire clamp pressure plate 2 together clamp the wire after the wire clamp body 1 and the wire clamp pressure plate 2 are locked. A locking groove 131 is provided on the arc-shaped groove 13, and a composite protective liner 15 is provided inside the locking groove 131. The composite protective liner 15 is fitted to the locking groove 131 and has an arc-shaped sheet structure. The two arc-shaped sidewalls of the locking groove 131 are conical structures. The two sides of the composite protective liner 15 also have conical sidewalls that match the locking groove 131. After the wire clamp body 1 and the wire clamp pressure plate 2 are locked, the inner arc-shaped wall of the composite protective liner 15 contacts the wire, providing a secure connection. The sidewall of the protective liner 15 engages with the locking groove 131, and under the action of the conical sidewall and conical structure, the composite protective liner 15 engages more tightly with the locking groove 131. In order to facilitate the replacement of the composite protective liner 15, a notch 1311 is provided on one side of the locking groove 131. The length of the notch 1311 is less than that of the locking groove 131, so that the composite protective liner 15 will not move into the notch 1311, ensuring that the composite protective liner 15 will not loosen after installation. When disassembling the composite protective liner 15, pry up one side of the composite protective liner 15 from the notch 1311, and then take the composite protective liner 15 out of the locking groove 131 without replacing the entire clamp.

[0024] Furthermore, the composite protective liner 15, from the outside to the inside, i.e. from the metal substrate of the clamp towards the conductor, includes a base layer 151, an intermediate elastic layer 152, and a working surface layer 153. The base layer 151 uses spring steel sheets with a surface roughened by sandblasting as a supporting skeleton. The steel sheets have through holes with a diameter of 2-3 mm evenly distributed on them for the upper and lower layers to be connected during vulcanization. The intermediate elastic layer 152 is a hydrogenated nitrile rubber matrix with 8%-12% aramid short fibers embedded inside as a reinforcing skeleton. It is bonded to the base layer 151 using a compression molding vulcanization process. The rubber passes through the through holes of the steel sheet to form a rivet-like anchor to ensure that the layers do not peel off. The working surface layer 153 is a composite coating of ultra-high molecular weight polyethylene and molybdenum disulfide with a MoS2 mass fraction of 10%-20%. The surface of the working layer 153 is laser-processed to form micro-textured oil storage pits with a diameter of 80-120μm and a depth of 15-25μm, which are uniformly distributed in a honeycomb pattern and have an areal density of 15%-25%. Fluorosilicone grease containing nano-graphene additives is injected into the pits. When the wire moves slightly, the grease slowly precipitates out, maintaining low friction at the interface for a long time.

[0025] It is important to understand that a steel pipe fixing hole 41 is provided at the connection position between the hammer body 4 and the steel strand 3. A steel pipe body 42 is installed inside the steel pipe fixing hole 41. The steel pipe body 42 is crimped to the steel strand 3. A lead seal 43 is provided at one end of the hammer body 4, extending into the steel pipe body 42. A chamfer is provided on the inner wall of the steel pipe body 42 near the lead seal 43. A flared mouth 421 is provided at the other end of the steel pipe body 42. A conical stress relief structure 44 is provided inside the flared mouth 421. The conical stress relief structure 44 is made of polyetheretherketone or glass fiber reinforced. Nylon 66 combines high strength with appropriate flexibility, with an elastic modulus of 3-8 GPa, which is between 210 GPa of the steel pipe body 42 and the free state of the steel strand 3. This achieves a flexible transition with gradual stiffness changes. In the traditional structure, the steel strand 3 suddenly changes from being fully constrained to being completely free at the outlet of the steel pipe body 42, resulting in a sudden change in the bending radius and a stress concentration factor as high as 3.0-4.0. The tapered stress relief structure 44, through the gradual change in tapered wall thickness, makes the bending stiffness of the steel strand 3 decrease along the axial gradient, the bending radius increase smoothly, and the stress concentration factor can be reduced.

[0026] Meanwhile, a coaxial annular cavity 45 is formed around the axis of the steel pipe fixing hole 41 of the hammer head body 4. The cross-section of the annular cavity 45 is rectangular or trapezoidal. A 3-5 mm thick metal wall of the hammer head is left between the annular cavity 45 and the outer wall of the steel pipe body 42 to ensure structural strength. The annular cavity 45 is filled with high-damping silicone gel or polyborosiloxane alkyl shear thickening gel, with a filling rate of 90%-95% of the volume of the annular cavity 45, leaving a small amount of compression space to accommodate thermal expansion and contraction.

[0027] Working process: During installation, the clamp body 1 and the clamp plate 2 are pre-hinged via hinge pin 12. The clamp plate 2 can be rotated open around the hinge pin 12. The wire is placed on the composite protective liner 15 in the wire arc groove 13 of the clamp body 1, and the clamp plate 2 is fastened. The bolt 51 is inserted through the fastening hole 14 and exits through the U-shaped groove 22. The flat washer 52, spring washer 53, and nut 54 are then inserted in sequence. The nut 54 is tightened to bring the clamp plate 2 closer to the clamp body 1 and lock it in place. The wire is clamped in the two wire arc grooves 13. During operation, the overhead conductor generates a slight vibration under the action of wind. The vibration energy is transmitted to the vibration damper through the clamp assembly, forcing the steel strand 3 to periodically bend and swing. The hammer head body 4 swings accordingly, and relative slippage and friction occur between the steel strands of the steel strand 3, converting the mechanical energy of the vibration into heat energy for dissipation, thus achieving basic vibration damping. When the conductor and the working surface layer 153 of the composite protective liner 15 experience slight slippage, the shear stress causes the fluorosilicone grease in the micro-textured oil reservoir to slowly precipitate out, forming a continuous lubricating film at the interface; the intermediate elastic layer 152 undergoes slight elastic deformation, absorbing impact energy and maintaining stable contact pressure. The conical stress relief structure 44 is fitted outside the steel strand 3, so that the constraint stiffness gradually decreases along the axial direction, the bending radius transitions smoothly, eliminates stress abrupt changes in the cross section, and reduces stress concentration. When the hammer body 4 swings, the steel pipe body 42 and the inner wall of the annular cavity 45 generate relative angular displacement. The high-damping silicone gel in the cavity generates viscous internal friction under shear action, converting impact energy into heat energy and reducing the stress peak value transmitted to the crimping interface; when the hammer body 4 is subjected to a large instantaneous impact, the shear thickening gel hardens instantaneously, preventing overload slippage or loosening of the crimping interface.

[0028] Three batches of the aforementioned conductor vibration dampers (numbered CB1-25 / 04 / 25-026-1, CB1-25 / 04 / 25-026-2, and CB1-25 / 04 / 25-026-3, respectively) were subjected to vibration damper fatigue-power characteristic testing. The testing standard was DL / T 1099-2021 "Technical Conditions and Test Methods for Vibration Dampers," and the dampers were vibrated for 5 × 10⁻⁶ cycles at each resonant frequency. 6 The following test results were obtained:

[0029] It should be noted that the above three batches of products underwent 10... 7 After the vibration, no strand breakage occurred in the anti-vibration hammer steel strand. The frequency change rates of the three batches of products at the first resonant frequency f1 and the second resonant frequency f2 were -5.56% to -8.33% and -5.08% to -8.18%, respectively, far exceeding the standard requirement of ≤±20%; the power change rates of P1 at the first resonant frequency and P2 at the second resonant frequency were -5.26% to -2.61% and 1.60% to 6.69%, respectively, both meeting the standard requirements. Figure 8 and Figure 9 The figures shown are power characteristic curves of vibration dampers before and after fatigue for products CB1-25 / 04 / 25-026-1 and CB1-25 / 04 / 25-026-3, respectively. The power characteristic curves of the products before and after fatigue are basically identical, indicating that the vibration damper of this invention can withstand 5×10⁻⁶ fatigue. 6 After the vibration, its resonant frequency and energy consumption did not decrease significantly, and its vibration resistance performance remained good.

[0030] In addition, the three batches of products mentioned above were subjected to vibration damper fatigue (residual torque of clamp bolts) testing, and the testing standard was DL / T 1099-2021 "Technical Conditions and Test Methods for Vibration Dampers". The following test results were obtained:

[0031] Under an installation torque of 100 N·m, the residual torque of all three batches of products after fatigue testing was significantly higher than the standard requirement of ≥50 N·m, and the residual torque retention rate exceeded 73%. This indicates that the intermediate elastic layer 152 of the composite protective liner 15 in this invention maintains a stable contact pressure between the conductor and the clamp through elastic restoring force after locking, effectively compensating for the attenuation of bolt preload caused by vibration, and avoiding slippage of the anti-vibration hammer and aggravated conductor wear caused by clamp loosening.

[0032] The three batches of products mentioned above were subjected to vibration damper fatigue-clamp gripping force test on steel strands, according to DL / T 1099-2021 "Technical Conditions and Test Methods for Vibration Dampers", with a loading rate of 0.1 kN / s. The following test results were obtained:

[0033] The gripping force test results of all three batches of products were greater than the standard requirement of 3kN. During the test, only the clamp slipped and no steel strand broke, indicating that the clamp held the steel strand firmly and reliably. Under long-term vibration conditions, the vibration damper will not slip along the axial direction of the conductor, ensuring the accuracy of the vibration damper's installation position and the durability of the vibration damping effect.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wear-resistant and fatigue-resistant conductor vibration damper, comprising a wire clamp assembly, a hammer head assembly, and a locking assembly (5), characterized in that, The clamp assembly includes a clamp body (1) and a clamp pressure plate (2). The upper end of the clamp body (1) is hinged to one end of the clamp pressure plate (2). The other end of the clamp body (1) and the clamp pressure plate (2) are fixed by a locking assembly (5). The hammer assembly includes a steel strand (3) and a hammer body (4). The middle position of the steel strand (3) passes through the lower end hole of the clamp body (1) and is fixedly connected to the clamp body (1). The two ends of the steel strand (3) are connected to the hammer body (4). The clamp body (1) and the clamp pressure plate (2) are both provided with wire arc grooves (13). The wire arc grooves (13) are provided with locking grooves (131). A composite protective liner (15) is provided in the locking grooves (131).

2. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: The two arc-shaped sidewalls of the locking groove (131) are conical structures. The two sides of the composite protective liner (15) are provided with conical sidewalls that match the locking groove (131). A notch (1311) is opened on one side of the locking groove (131), and the length of the notch (1311) is less than that of the locking groove (131).

3. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: The composite protective liner (15) has an arc-shaped sheet structure. The composite protective liner (15) includes a base layer (151), an intermediate elastic layer (152), and a working surface layer (153). The working surface layer (153) has micro-textured oil storage pits on its surface, and the pits are filled with lubricating medium.

4. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 3, characterized in that: The base layer (151) uses spring steel sheets with roughened surface by sandblasting as a support skeleton, and the steel sheets have through holes with a diameter of 2 to 3 mm evenly distributed on them; the intermediate elastic layer (152) is a hydrogenated nitrile rubber matrix, with 8% to 12% aramid short fibers embedded inside as a reinforcing skeleton, and is combined with the base layer (151) by compression molding and vulcanization process, and the rubber passes through the through holes of the steel sheet to form a rivet-type anchor.

5. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 3, characterized in that: The working surface layer (153) is a composite coating of ultra-high molecular weight polyethylene and molybdenum disulfide, with a molybdenum disulfide mass fraction of 10% to 20%; the diameter of the micro-textured oil storage pits is 80 to 120 μm, the depth is 15 to 25 μm, and they are uniformly distributed in a honeycomb pattern with a surface density of 15% to 25%.

6. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: A steel pipe fixing hole (41) is provided at the connection position between the hammer body (4) and the steel strand (3). A steel pipe body (42) is provided in the steel pipe fixing hole (41), and the steel pipe body (42) is crimped with the steel strand (3).

7. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: The steel pipe body (42) has a flared mouth (421) at the end away from the lead seal (43), and a conical stress relief structure (44) is provided inside the flared mouth (421).

8. The wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: The hammer body (4) has a coaxial annular cavity (45) around the axis of the steel pipe fixing hole (41). The annular cavity (45) is filled with damping material, and the cross section of the annular cavity (45) is rectangular or trapezoidal.

9. A wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: The locking assembly (5) includes a bolt (51) and a flat washer (52), a spring washer (53) and a nut (54) sequentially fitted on the bolt (51). The bolt (51) passes through the fastening hole (14) of the clamp body (1) and then passes through the U-shaped groove (22) of the clamp pressure plate (2). The fastening hole (14) is provided with a hexagonal nut countersunk hole, and the nut of the bolt (51) is engaged in the nut countersunk hole.

10. A wear-resistant and fatigue-resistant conductor vibration damper according to claim 1, characterized in that: The upper end of the clamp body (1) is provided with a hinge seat (11), and one end of the clamp pressure plate (2) is provided with a hinge block (21). A hinge pin (12) that passes through the hinge block (21) is interference-connected on the hinge seat (11).

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