Anti-slip device for anti-vibration hammer of overhead line

Abstract

The utility model provides a kind of overhead line anti-vibration hammer anti-slip device, including base, inertial component, hoop type wire clamp and fastening connecting piece, hoop type wire clamp is split type structure, one half is lower cover, lower cover and base one end integral type connection, other half is upper cover, upper cover is fixedly connected with lower cover by fastening connecting piece, power transmission line is clamped in hoop type wire clamp middle part, inertial component includes steel strand and hammer head, steel strand middle part is fixedly connected with the other end of base, and it is connected with hammer head along two sides symmetrical extension, hoop type wire clamp is provided with embedded tooth with elastic compensation function at the clamping surface of abutting with power transmission line. Solve the problem that anti-vibration hammer slips or falls on overhead line due to line vibration.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage transmission lines, and in particular to an anti-vibration hammer and anti-slip device for overhead lines. Background Technology

[0002] During the operation of overhead transmission lines, wind-induced conductor vibration is a significant factor affecting the safety and stability of the lines. To suppress such vibrations, vibration dampers are widely installed on overhead conductors as key equipment, absorbing and dissipating vibration energy through their mass inertia. However, traditional vibration dampers typically rely on bolt-fastened clamp structures to be fixed to the conductors, which has significant drawbacks in practical applications.

[0003] Because transmission lines are exposed to the natural environment for extended periods, continuous wind vibration causes vibration dampers to endure repeated alternating stresses. Under these conditions, the fixing bolts tend to loosen gradually, reducing the clamping force between the vibration damper and the conductor. Simultaneously, the anti-slip capability of traditional clamping plate structures is limited, relying primarily on rubber pads for friction on the contact surface. As the rubber material ages and the vibration frequency increases, the anti-slip effect further weakens. These multiple factors combined create a risk of slippage or even detachment of the vibration damper.

[0004] Vibration damper slippage not only directly weakens its vibration reduction effect, increasing conductor amplitude, but also triggers a chain reaction of problems. During slippage, mechanical wear occurs between the vibration damper and the conductor, potentially causing surface damage, strand breakage, or even fracture of the conductor and ground wire. Such faults not only increase the burden of line maintenance but also threaten the safe and reliable operation of the power grid. Especially in critical locations such as ultra-high voltage lines and the incoming and outgoing lines of important substations, vibration damper failure can cause regional power outages, resulting in serious economic losses and social impacts. Utility Model Content

[0005] The main purpose of this utility model is to provide an anti-slip device for vibration dampers on overhead lines, so as to solve the problem of vibration dampers slipping or falling off due to line vibration.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an anti-vibration hammer anti-slip device for overhead lines, including a base, an inertial component, a clamp-type wire clamp and a fastening connector; The clamp-type wire clamp has a split structure. One half is the lower cover, which is integrally connected to one end of the base. The other half is the upper cover, which is fixedly connected to the lower cover through fastening connectors. The power transmission line is clamped in the middle of the clamp-type wire clamp. The inertial components include steel strands and hammers. The middle part of the steel strands is fixedly connected to the other end of the base, and extends symmetrically along both sides to connect with the hammers. The clamping surface of the clamping clamp that abuts the power transmission line is equipped with embedded teeth with elastic compensation function.

[0007] In the preferred embodiment, baffles are vertically provided on both sides of the base, and the width of the top cover is equal to the inner distance between the two baffles, which is used to limit the displacement of the top cover along the length of the transmission line.

[0008] In the preferred embodiment, the clamping part of the clamping clamp has a square cross-section, with the lower cover and the upper cover each corresponding to two sides of the square. Each clamping surface is provided with an elastic toothed insert along the length of the transmission line, and the end face normal of the elastic toothed insert points radially toward the center of the transmission line.

[0009] In the preferred embodiment, the elastic toothed insert is connected to the lower cover and the upper cover respectively via a T-shaped slider, and the end face of the elastic toothed insert is provided with an embedded tooth array.

[0010] In the preferred embodiment, the two elastic toothed inserts of the top cover are arranged through the cover along its width.

[0011] In the preferred embodiment, the two elastic toothed inserts of the lower cover are engaged with the lower cover via the positioning key of the connecting block; The width of the connecting block is equal to the inner spacing of the two baffles, and the two elastic toothed inserts of the lower cover are installed through the connecting block along its width direction.

[0012] In the preferred embodiment, the number of locating keys is at least two.

[0013] In the preferred embodiment, the embedded tooth includes a tooth head and a tooth root spring. The bottom end of the tooth head is located on the end face of the elastic tooth insert through the tooth root spring, and the tooth root spring drives the tooth head to radially press against the power transmission line.

[0014] In the preferred embodiment, the tip of the embedded tooth is arc-shaped, and the diameter of the arc is smaller than the width of the gap on the surface of the steel strand of the transmission line.

[0015] In the preferred embodiment, the tooth root spring is an arc-shaped plate structure with its protrusion pointing towards the power transmission line, and the tooth root spring and the tooth head are integrally stamped from a metal sheet.

[0016] This invention provides an anti-slip device for vibration dampers on overhead lines. The device features an elastic embedded tooth structure on the clamping surface of the clamp-type cable clamp, significantly enhancing anti-slip stability. The arc-shaped tooth head of the embedded tooth is smaller than the width of the surface gaps in the steel strands of the transmission line, effectively embedding into microscopic gaps on the cable surface. An arc-shaped tooth root spring at the bottom of the tooth head provides continuous radial clamping force, ensuring tight engagement between the tooth head and the line surface. Even under long-term wind-induced vibration, the spring can adapt to line deformation, compensate for gaps caused by vibration wear, maintain stable clamping, and fundamentally prevent axial slippage or rotational failure of the vibration damper.

[0017] The modular, flexible toothed insert design significantly optimizes maintenance convenience and service life. The flexible toothed insert is detachably connected to the upper and lower covers of the wire clamp via a T-shaped slider or connecting block, making the insert tooth an independent, vulnerable unit. When the insert tooth's performance deteriorates due to wear or fatigue, the insert can be pulled out laterally for replacement simply by removing the fasteners, eliminating the need to replace the entire vibration damper or wire clamp body. This significantly reduces maintenance costs and operational difficulty, ensuring optimal anti-slip performance throughout long-term operation.

[0018] The device structure employs multiple design features to ensure overall stability. Vertical baffles on both sides of the base precisely match the width of the upper cover, limiting axial displacement of the upper cover along the cable. The elastic toothed inserts at the lower cover engage with the base via positioning keys on the connecting blocks; the width of the connecting blocks is also equal to the baffle spacing, forming a double-limiting mechanism. The quadrilateral cross-sectional profile of the clamp-type cable clip, combined with radially arranged elastic toothed inserts on the four clamping surfaces, ensures even distribution of clamping force around the cable. The arrayed embedded teeth provide balanced, all-around clamping, preventing damage to the cable from unilateral pressure and enhancing clamping reliability. The embedded teeth are integrally stamped from a single sheet metal piece, eliminating weak points. Each tooth independently adapts to unevenness on the cable surface, ensuring anti-slip performance while preventing cable damage. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view structural diagram of the overall appearance of this utility model; Figure 2 This is a rear view structural diagram of the overall appearance of this utility model; Figure 3 This is an exploded view of the overall device of this utility model; Figure 4 This is a structural diagram of the inertial component of this utility model; Figure 5 This is a structural diagram of the base of this utility model; Figure 6 This is a structural diagram of the connecting block and the elastic toothed insert of this utility model. Figure 7 This is a structural diagram of the installation of the top cover and the elastic toothed insert of this utility model; Figure 8 This is a cross-sectional view of the elastic toothed insert of this utility model.

[0020] In the diagram: 1. Base; 101. Baffle; 2. Inertial component; 201. Steel strand; 202. Hammer head; 3. Clamp-type wire clamp; 301. Lower cover; 302. Upper cover; 4. Fastening connector; 5. Transmission line; 6. Embedded tooth; 601. Tooth head; 602. Elastic tooth insert; 7. T-shaped slider; 701. Connecting block; 8. Positioning key; 801. Detailed Implementation

[0021] Example 1 like Figures 1-8 As shown, an anti-vibration hammer anti-slip device for overhead lines includes a base 1, an inertial component 2, a clamp-type wire clamp 3, and a fastening connector 4. The clamp-type wire clamp 3 has a split structure. One half is the lower cover 301, which is integrally connected to one end of the base 1. The other half is the upper cover 302, which is fixedly connected to the lower cover 301 through the fastening connector 4. The power transmission line 5 is clamped in the middle of the clamp-type wire clamp 3. The inertial component 2 includes a steel strand 201 and a hammer head 202. The middle part of the steel strand 201 is fixedly connected to the other end of the base 1, and extends symmetrically along both sides to connect with the hammer head 202. The clamping surface of the clamp 3 that abuts against the transmission line 5 is provided with an embedded tooth 6 that has an elastic compensation function.

[0022] This application improves the structure of the FD-type vibration damper by modifying its traditional separate clamp-type wire clamp structure into a structure with an embedded tooth 6 that has an elastic compensation function. The end of the embedded tooth 6 tightly engages with the gap of the transmission line 5, and its pre-pressurized clamping force tightly grips the surface of the transmission line 5. The embedded tooth 6 can also be disassembled and replaced, ensuring that the device can maintain excellent clamping ability for a long time, maintain its simulation effect, and reduce the occurrence of slippage.

[0023] In the preferred embodiment, baffles 101 are vertically provided on both sides of the base 1, and the width of the top cover 302 is equal to the inner distance between the baffles 101 on both sides, which is used to limit the displacement of the top cover 302 along the length of the transmission line 5.

[0024] In the preferred embodiment, the clamping part of the clamping clamp 3 has a quadrilateral profile. The lower cover 301 and the upper cover 302 each correspond to two sides of the quadrilateral. Each clamping surface is provided with an elastic toothed insert 7 along the length of the transmission line 5. The end face normal of the elastic toothed insert 7 points radially toward the center of the transmission line 5.

[0025] During installation, the power transmission line 5 is clamped at the center of the square between the upper cover 302 and the lower cover 301. The fastening connector 4 is a bolt structure. The bolt passes through the upper cover 302 and the lower cover 301 from one side of the clamping part and is tightened by nuts, so that the four inclined surfaces simultaneously abut against the four sides of the surface of the power transmission line 5.

[0026] In the preferred embodiment, the elastic toothed insert 7 is connected to the lower cover 301 and the upper cover 302 respectively via a T-shaped slider 701, and the end face of the elastic toothed insert 7 is provided with an array of embedded teeth 6.

[0027] In the preferred embodiment, the two elastic toothed inserts 7 of the upper cover 302 are arranged through the cover along its width direction.

[0028] In the preferred embodiment, the two elastic toothed inserts 7 of the lower cover 301 are engaged with the lower cover 301 by the positioning key 801 of the connecting block 8; The width of the connecting block 8 is equal to the inner spacing of the two baffles 101, and the two elastic toothed inserts 7 of the lower cover 301 are arranged through the width of the connecting block 8.

[0029] In the preferred embodiment, the number of positioning keys 801 is at least two.

[0030] Since the embedded tooth 6 provides damping compensation for the vibration of the transmission line 5 over a long period of time, its end will experience relative wear from the gaps and minor unevenness of the steel strand surface. Furthermore, its elastic structure, which independently adapts to the deformation of the surface it presses against, will cause structural deformation. Therefore, this application requires that the embedded tooth 6 be designed as a separate, detachable structure. The replacement and inspection cycle should be designed based on its material properties and cost, or it should be disassembled and replaced when the overall working condition of the device is poor.

[0031] The main body of the top cover 302 and the device as a whole are detachable structures. After loosening the bolts, the two elastic toothed inserts 7 on it can be pulled out from the side for replacement.

[0032] To facilitate installation, the lower cover 301 and the base 1 need to be designed for integrated fastening while also allowing for disassembly. Therefore, a connecting block 8 structure is introduced. The positioning key 801 on its outer side is inserted into the corresponding keyway on the inner side of the base 1 for initial positioning and fixation. When disassembly is required, the connecting block 8 is pried off the base 1, and the two elastic toothed inserts 7 on it can be pulled out from the side for replacement.

[0033] The two elastic toothed inserts 7 on the connecting block 8 are axially limited by the baffles 101 on both sides. When the upper cover 302 and the lower cover 301 are closed, the tightening force of the bolts will further push the keyway structure of the connecting block 8 on the lower cover 301 into the base 1. The upper cover 302 is stuck between the two baffles 101 on the base 1, and the two elastic toothed inserts 7 on it are also axially limited by the baffles 101.

[0034] In the preferred embodiment, the embedded tooth 6 includes a tooth head 601 and a tooth root spring piece 602. The bottom end of the tooth head 601 is disposed on the end face of the elastic tooth insert 7 through the tooth root spring piece 602. The tooth root spring piece 602 drives the tooth head 601 to radially press against the power transmission line 5.

[0035] In the preferred embodiment, the end of the tooth head 601 of the embedded tooth 6 is arc-shaped, and its arc diameter is smaller than the width of the surface gap of the steel strand of the transmission line 5.

[0036] In the preferred embodiment, the tooth root spring 602 is an arc-shaped plate structure with its protrusion pointing towards the power transmission line 5. The tooth root spring 602 and the tooth head 601 are integrally stamped from metal sheet.

[0037] The tooth 601, following the deformation of the tooth root spring 602, can always fit the gap of the steel strand. Even if the tooth wear is within 0.2mm, the spring rebound can still push the tooth to maintain the locked state. The end is rounded to avoid scratching the steel strand.

[0038] Each tooth 601 is equipped with its own tooth root spring 602, which ensures that each tooth is subjected to consistent force and has better adaptability. The two are integrally stamped and formed without additional connecting seams, avoiding the risk of desoldering caused by welding and other processes.

[0039] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An anti-slip device for vibration dampers on overhead lines, characterized in that: Includes a base (1), an inertial component (2), a clamp-type wire clamp (3), and a fastening connector (4); The clamp-type wire clamp (3) is a split structure. One half is the lower cover (301), which is integrally connected to one end of the base (1). The other half is the upper cover (302), which is fixedly connected to the lower cover (301) through fastening connector (4). The power transmission line (5) is clamped in the middle of the clamp-type wire clamp (3). The inertial component (2) includes a steel strand (201) and a hammer (202). The middle part of the steel strand (201) is fixedly connected to the other end of the base (1) and extends symmetrically along both sides to connect with the hammer (202). The clamping surface of the clamp (3) that abuts against the transmission line (5) is provided with an embedded tooth (6) with elastic compensation function.

2. The anti-slip device for an overhead line vibration damper according to claim 1, characterized in that: The base (1) has vertical baffles (101) on both sides. The width of the top cover (302) is equal to the inner distance between the baffles (101) on both sides, which is used to limit the displacement of the top cover (302) along the length of the transmission line (5).

3. The anti-slip device for an overhead line vibration damper according to claim 1, characterized in that: The clamping part of the clamping clamp (3) has a regular quadrilateral profile. The lower cover (301) and the upper cover (302) correspond to two sides of the regular quadrilateral. Each clamping surface is provided with an elastic toothed insert (7) along the length of the transmission line (5). The end face normal of the elastic toothed insert (7) points radially toward the center of the transmission line (5).

4. The anti-slip device for an overhead line vibration damper according to claim 3, characterized in that: The elastic toothed insert (7) is connected to the lower cover (301) and the upper cover (302) respectively via the T-shaped slider (701), and the end face of the elastic toothed insert (7) is provided with an array of embedded teeth (6).

5. The anti-slip device for an overhead line vibration damper according to claim 3, characterized in that: Two flexible toothed inserts (7) of the top cover (302) are provided through the width direction.

6. The anti-slip device for an overhead line vibration damper according to claim 3, characterized in that: The two elastic toothed inserts (7) of the lower cover (301) are engaged with the lower cover (301) by the positioning key (801) of the connecting block (8); The width of the connecting block (8) is equal to the inner spacing of the two baffles (101), and the two elastic toothed inserts (7) of the lower cover (301) are arranged through the width direction of the connecting block (8).

7. The anti-slip device for an overhead line vibration damper according to claim 6, characterized in that: The number of positioning keys (801) is at least two.

8. The anti-slip device for an overhead line vibration damper according to claim 1, characterized in that: The embedded tooth (6) includes a tooth head (601) and a tooth root spring (602). The bottom end of the tooth head (601) is located on the end face of the elastic tooth insert (7) through the tooth root spring (602). The tooth root spring (602) drives the tooth head (601) to radially press against the power transmission line (5).

9. The anti-slip device for an overhead line vibration damper according to claim 8, characterized in that: The tip (601) of the embedded tooth (6) is arc-shaped, and its arc diameter is smaller than the width of the surface gap of the steel strand of the transmission line (5).

10. The anti-slip device for an overhead line vibration damper according to claim 8, characterized in that: The tooth root spring (602) is an arc-shaped plate structure with its protrusion pointing towards the power transmission line (5). The tooth root spring (602) and the tooth head (601) are integrally stamped from metal sheet.

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