High-vibration-resistance anti-slip strain clamp

Abstract

The application provides a high-anti-vibration anti-slip strain clamp applied to the technical field of clamps, which comprises a clamping unit, the clamping unit is composed of a pair of fixed plates arranged symmetrically upward and downward, a pair of convergence plates are fixedly connected between the pair of fixed plates, a pair of clamping blocks are arranged in the convergence plates, an arc-shaped clamping surface matched with a cable is formed on the opposite side of the clamping blocks, an extension plate is integrally formed at the end of the fixed plate away from the convergence plate opening, a buffer unit is fixedly connected to the end of the extension plate, the buffer unit is used for absorbing multidirectional vibration of the cable, avoiding transmission of the vibration to the clamping unit to cause clamping loosening, when the arc-shaped rod slides in the arc-shaped groove and extrudes the compression spring, the vibration of the cable in the circumferential direction is absorbed, the vibration impact force can be effectively buffered, the vibration is avoided from being directly transmitted to the connection position of the cable and the clamping unit, the torsional force of the cable is buffered, and the problem that the clamping is loosened due to long-term torsional vibration of the cable is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of wire clamp technology, and specifically to a tension clamp, which is a high-vibration-resistant and anti-slip tension clamp. Background Technology

[0002] Tension clamps are indispensable key hardware in power transmission lines. They are mainly used to fix cables, conduct cable tension, and ensure the stable installation and operation of cables under complex working conditions. Their anti-slip and anti-vibration performance directly determines the safety and reliability of power transmission.

[0003] In practical engineering applications, tension clamps are often in complex environments with strong vibration and tensile fluctuations, such as wind-induced vibration of cables caused by strong outdoor winds and mechanical vibration generated by equipment operation. Long-term vibration can cause relative micro-movement between the clamp and the cable, loosening of the clamp, and then cable slippage. In severe cases, it can cause cable wear, strand breakage, or even power transmission interruption, resulting in major safety hazards and economic losses.

[0004] Patent application CN118676825B discloses an anti-loosening tension clamp, including a main body and a pressure plate. The pressure plate is located above the main body. Several sets of arc-shaped limiting plates are provided on the side of the pressure plate away from the main body. Several sets of through mounting holes are provided on both sides of the main body. U-bolts are provided in the arc-shaped limiting plates. The lower end of the U-bolt passes through the mounting hole. When the sliding seat moves down, the torsion spring drives the sliding seat to rotate. When the sliding seat rotates, the hexagonal groove drives the nut to rotate, thereby facilitating the quick threaded connection between the nut and the U-bolt.

[0005] Currently, most existing tension clamps employ a single clamping method or apply a paste-like anti-slip medium to the clamping interface. These structures have significant drawbacks: firstly, a single clamping method cannot achieve the self-locking effect of "the greater the tension, the tighter the clamping," and under long-term tension fluctuations and vibrations, the clamping force is prone to decay, resulting in insufficient anti-slip performance; secondly, the paste-like anti-slip medium is easily washed away and diluted by rainwater, failing to achieve long-term anti-slip performance, and the application process is cumbersome and maintenance costs are high.

[0006] To address this issue, we propose a high-vibration-resistant and anti-slip tension clamp. Summary of the Invention

[0007] The purpose of this invention is to provide a high vibration resistance and anti-slip tension clamp, solving the technical problems of insufficient anti-slip and vibration resistance performance of existing tension clamps.

[0008] The objective of this invention can be achieved through the following technical solutions: A high vibration-resistant and anti-slip tension clamp includes a clamping unit, which consists of a pair of fixed plates arranged symmetrically on the top and bottom. A pair of convergent plates are fixedly connected between the pair of fixed plates. A pair of clamping blocks are assembled inside the clamping unit. An arc-shaped clamping surface adapted to the cable is opened on the opposite side of the clamping blocks for tightly fitting the outer wall of the cable and realizing the initial fixation of the cable. An extension plate is integrally formed at the end of the fixed plate away from the opening of the converging plate. A buffer unit is fixedly connected to the end of the extension plate. The buffer unit is used to absorb multi-directional vibration of the cable and prevent vibration from being transmitted to the clamping unit, which would cause the clamping to loosen.

[0009] Preferably, the buffer unit includes a base sleeved on the outside of the cable, a semi-circular pressure plate corresponding to the upper end of the base, the pressure plate being fixedly connected to the base by U-bolts, and an inner ring being fixedly connected to the outer wall of the base.

[0010] Preferably, a pair of arc-shaped grooves are symmetrically formed inside the inner ring, and an arc-shaped rod is slidably connected inside the arc-shaped groove. Both ends of the arc-shaped rod are fixedly connected to the bottom wall of the arc-shaped groove by compression springs. Preferably, a connecting rod is fixedly connected to the middle of the arc-shaped rod, and the end of the connecting rod away from the arc-shaped rod is fixedly connected to the outer wall of the base. Correspondingly, a limiting groove communicating with the arc-shaped groove is opened on the inner wall of the inner ring, and the connecting rod passes through the limiting groove and can slide along the limiting groove.

[0011] Preferably, the inner ring further includes an outer ring fixedly connected to the end of the extension plate, and the inner wall of the outer ring is connected to the inner ring by a rubber ring.

[0012] Preferably, the pair of converging plates are funnel-shaped with the opening facing right. The clamping block moves away from the opening of the converging plate under the tension of the cable. The inner sidewall of the converging plate is provided with a sliding groove, and multiple movable slots are provided inside the sliding groove. A tightening component is slidably arranged inside the movable slot.

[0013] Preferably, the tightening component includes a friction plate slidably connected inside the groove. The friction plate is made of sintered ceramic powder material, and its side near the clamping block is in close contact with the outer wall of the clamping block.

[0014] Preferably, a limiting post is fixedly connected to the side wall of the friction plate, the limiting post is slidably inserted inside the movable groove, and the axis of the limiting post is perpendicular to the axis of the cable.

[0015] Preferably, a limiting ring is fitted and fixed on the limiting post, and the side wall of the limiting ring is tightly attached to the outer wall of the inclined converging plate to limit the axial movement of the limiting post and prevent the tightening assembly from loosening.

[0016] Preferably, the limiting post has an annular groove, and the tightening assembly also includes a cable. One end of the cable is fixed to the base near the clamping block. After the tension clamp is installed, the other end of the cable is tightened and wound around the annular groove.

[0017] The beneficial effects of this invention are: 1. This invention absorbs the vibration of the cable along the circumferential direction by sliding the arc-shaped rod in the arc-shaped groove and squeezing the compression spring. It can effectively buffer the vibration impact force and prevent the vibration from being directly transmitted to the connection between the cable and the clamping unit. It also buffers the torsional force of the cable and effectively avoids the problem of clamping loosening caused by long-term torsional vibration of the cable.

[0018] 2. This invention utilizes a cable to synchronously transmit vibrations from the base to the tightening assembly, causing the friction plate to further tighten the clamping block. Simultaneously, the micro-vibration generates more relative friction between the base and the clamping block, thereby producing more ceramic powder. After the pre-coated anti-slip powder is washed away by rainwater, the anti-slip powder can be automatically replenished to maintain the anti-slip capability. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a partial cross-sectional structural diagram of the main body of the present invention; Figure 3 This is a schematic diagram of the buffer unit structure of the present invention; Figure 4 This is an exploded view of the buffer unit of the present invention; Figure 5 This is a schematic diagram of a partial cross-sectional structure of the inner ring of the present invention; Figure 6 This is a schematic diagram of the tightening component of the present invention in its working state; Figure 7 This is a schematic diagram of the tightening component structure of the present invention.

[0021] In the diagram: 1. Clamping unit; 11. Fixing plate; 12. Converging plate; 121. Slide groove; 122. Movable groove; 13. Clamping block; 14. Tightening assembly; 141. Friction plate; 15. Extension plate; 142. Limiting post; 143. Limiting ring; 144. Annular groove; 145. Cable; 2. Buffer unit; 21. Base support; 211. Pressure plate; 212. U-bolt; 22. Inner ring; 221. Arc groove; 222. Limiting groove; 223. Arc rod; 224. Compression spring; 225. Connecting rod; 23. Outer ring; 231. Rubber ring. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-2 As shown, a high vibration-resistant and anti-slip tension clamp includes a clamping unit 1. The clamping unit 1 consists of a pair of fixed plates 11 arranged symmetrically on the top and bottom. A pair of converging plates 12 are fixedly connected between the pair of fixed plates 11. A pair of clamping blocks 13 are assembled inside the clamping unit 13. An arc-shaped clamping surface adapted to the cable is opened on the opposite side of the clamping block 13 for tightly fitting the outer wall of the cable and realizing the initial fixation of the cable. An extension plate 15 is integrally formed at the end of the fixed plate 11 away from the opening of the converging plate 12. A buffer unit 2 is fixedly connected to the end of the extension plate 15. The buffer unit 2 is used to absorb the multi-directional vibration of the cable and prevent the vibration from being transmitted to the clamping unit 1, which would cause the clamping to loosen.

[0024] Specifically, the inner ring 22 and outer ring 23 of the buffer unit 2 are designed to achieve a dual buffering and vibration reduction effect. The inner ring 22 absorbs the vibration of the cable along the circumferential direction through the sliding cooperation of the arc groove 221, the arc rod 223 and the compression spring 224. When the arc rod 223 slides in the arc groove 221, the compression spring 224 can effectively buffer the vibration impact force and prevent the vibration from being directly transmitted to the connection between the cable and the clamping unit 1. The inner ring 22 buffers the torsional force of the cable, effectively avoiding the problem of clamping loosening caused by long-term torsional vibration of the cable.

[0025] Please see Figures 3-4 As shown, the buffer unit 2 includes a base support 21 sleeved on the outside of the cable. A semi-circular pressure plate 211 is correspondingly provided on the upper end of the base support 21. The pressure plate 211 is fixedly connected to the base support 21 by U-bolts 212. By tightening the U-bolts 212, the pressure plate 211 and the base support 21 can be tightly pressed against the outer wall of the cable, realizing the synchronous linkage between the buffer unit 2 and the cable. An inner ring 22 is fixedly connected to the outer wall of the base support 21.

[0026] Please see Figure 5 As shown, a pair of arc-shaped grooves 221 are symmetrically opened inside the inner ring 22. Arc-shaped rods 223 are slidably connected inside the arc-shaped grooves 221. Both ends of the arc-shaped rods 223 are fixedly connected to the bottom wall of the arc-shaped grooves 221 by compression springs 224. A connecting rod 225 is fixedly connected to the middle of the arc-shaped rod 223. The end of the connecting rod 225 away from the arc-shaped rod 223 is fixedly connected to the outer wall of the base 21. Correspondingly, a limiting groove 222 communicating with the arc-shaped groove 221 is opened on the inner wall of the inner ring 22. The connecting rod 225 passes through the limiting groove 222 and can slide along the limiting groove 222. This structure, through the sliding cooperation between the arc-shaped rod 223 and the arc-shaped groove 221, combined with the buffering effect of the compression spring 224, can effectively absorb the vibration of the cable along the circumferential direction, buffer the vibration impact force, and at the same time buffer and offset the torsional force of the cable, avoiding the problem of clamping loosening and slippage caused by long-term torsional vibration of the cable, and further improving the vibration resistance of the clamp.

[0027] The inner ring 22 also includes an outer ring 23 fixedly connected to the end of the extension plate 15, and the inner wall of the outer ring 23 is connected to the inner ring 22 by a rubber ring 231.

[0028] Please see Figure 6 As shown, a pair of convergence plates 12 have a funnel structure with the opening facing to the right. The clamping block 13 moves away from the opening of the convergence plate 12 under the tension of the cable. A sliding groove 121 is provided on the inner side wall of the convergence plate 12. Multiple movable grooves 122 are provided inside the sliding groove 121. A tightening component 14 is slidably arranged inside the movable groove 122.

[0029] Please see Figure 6 As shown, the tightening assembly 14 includes a friction plate 141 slidably connected inside the slide groove 121. The friction plate 141 is made of sintered ceramic powder material. Its side near the clamping block 13 is in close contact with the outer wall of the clamping block 13. When the clamping block 13 and the friction plate 141 rub against each other, the friction plate 141 can wear in situ to generate ceramic powder. The ceramic powder fills the space between the friction plate 141 and the clamping block 13, which can significantly increase the friction coefficient between the two, thereby improving the anti-slip performance of the clamping block 13 on the cable and achieving long-term anti-slip.

[0030] Please see Figure 7 As shown, a limiting post 142 is fixedly connected to the side wall of the friction plate 141. The limiting post 142 slides through the movable groove 122, and the axis of the limiting post 142 is perpendicular to the axis of the cable. The sliding cooperation between the limiting post 142 and the sliding groove 121 and the movable groove 122 can limit the displacement range of the friction plate 141 and ensure that the friction plate 141 is adjusted synchronously with the movement of the clamping block 13, thus ensuring the effectiveness of frictional contact and the stability of the anti-slip effect.

[0031] A limiting ring 143 is fitted and fixed on the limiting post 142. The side wall of the limiting ring 143 is tightly attached to the outer wall of the inclined converging plate 12 to limit the axial movement of the limiting post 142 and prevent the tightening assembly 14 from loosening.

[0032] Please see Figures 6-7As shown, the limiting post 142 has an annular groove 144. The tightening assembly 14 also includes a cable 145. One end of the cable 145 is fixed to the base 21 near the clamping block 13. After the tension clamp is installed, the other end of the cable 145 is tightened and wound around the annular groove 144.

[0033] Specifically, the vibration of the base 21 can be transmitted to the tightening assembly 14, causing more ceramic powder to be generated by friction between the friction plate 141 and the clamping block 13.

[0034] The cable 145 can synchronously transmit the vibration on the base 21 to the tightening component 14, causing the friction plate 141 to drive the clamping block 13 to tighten further. At the same time, the micro-vibration can generate more relative friction between it and the clamping block 13, thereby generating more ceramic powder and further improving the anti-slip performance.

[0035] The cable 145 transmits the vibration of the base 21 to the tightening component 14, realizing the reasonable transmission and consumption of vibration energy, avoiding the loosening of the component caused by local vibration concentration, greatly improving the stability of the clamp in strong vibration environment such as strong wind and equipment operation vibration, and extending the service life of the clamp and cable.

[0036] In addition, the cable 145 not only transmits vibration, but also, when tightened, is wound around the annular groove 144 of the limiting post 142, which can further limit the displacement of the friction plate 141, ensuring that the friction plate 141 is always in close contact with the clamping block 13, continuously playing an anti-slip role, effectively avoiding the slippage problem of the cable caused by vibration and tension fluctuations, and ensuring the stability of power transmission.

[0037] Working principle: During cable installation, the cable is placed between the clamping blocks 13. The converging plate 12 initially clamps the clamping blocks 13 by fixing them with the fixing plate 11. Tightening the U-bolts 212 presses the cable firmly against the base 21 and pressure plate 211, while simultaneously tightening the cable 145 and fixing it within the annular groove 144 of the limiting post 142. When the cable is under tension, the clamping blocks 13 move inward along the funnel structure of the converging plate 12. Utilizing the converging characteristics of the funnel structure, the clamping force of the clamping blocks 13 on the cable increases synchronously with the increase of tension, forming a "the more you pull, the stronger the clamping force" effect. The self-locking effect of "tightening" reduces axial slippage of the cable. When the cable vibrates, the rubber ring 231 of the buffer unit 2 absorbs axial and radial vibrations, and the arc rod 223 and the compression spring 224 work together to absorb circumferential vibrations and torsional forces, preventing vibrations from being directly transmitted to the connection between the cable and the clamp, which would cause the connection to vibrate for a long time and lose its clamping force. At the same time, the cable 145 transmits the vibration to the tightening component 14, causing the friction plate 141 to rub against the clamping block 13 to generate ceramic powder, further increasing the friction force and achieving the dual effects of high vibration resistance and anti-slip.

[0038] How to use: Step 1: Preliminary Preparations Check the integrity of each component, clean the area where the cable will be clamped, and ensure the surface is clean.

[0039] Step 2: Initial cable clamping The cable is passed through the base 21 and placed between a pair of clamping blocks 13, with a spare length reserved. The clamping blocks 13 are used to drive the cable to move along the funnel structure of the converging plate 12 towards the inside of the opening, so that the clamping force of the clamping blocks 13 on the cable increases synchronously with the increase of the tension, forming a self-locking effect and realizing the initial clamping of the cable.

[0040] Step 3: Install the buffer unit Place the pressure plate 211 on the base 21 and tighten it with U-bolts 212 to ensure that the buffer unit 2 and the cable move in sync.

[0041] Step 4: Tighten component debugging The end of the cable 145 away from the base 21 is tightened and fixed in the annular groove 144 of the limiting post 142, so that the cable 145 is taut and the friction plate 141 and the clamping block 13 are tightly fitted.

[0042] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A high-vibration-resistant and anti-slip tension clamp, characterized in that: Includes a clamping unit (1), which is composed of a pair of fixed plates (11) arranged symmetrically on the top and bottom. A pair of converging plates (12) are fixedly connected between the pair of fixed plates (11). A pair of clamping blocks (13) are assembled inside the plate. An arc-shaped clamping surface adapted to the cable is opened on the opposite side of the clamping block (13). An extension plate (15) is integrally formed at one end of the fixed plate (11) away from the opening of the converging plate (12). A buffer unit (2) is fixedly connected to the end of the extension plate (15). The buffer unit (2) is used to absorb the multi-directional vibration of the cable.

2. The high vibration-resistant and anti-slip tension clamp according to claim 1, characterized in that: The buffer unit (2) includes a base (21) sleeved on the outside of the cable. A semi-circular pressure plate (211) is provided on the upper end of the base (21). The pressure plate (211) is fixedly connected to the base (21) by a U-bolt (212). An inner ring (22) is fixedly connected to the outer wall of the base (21).

3. The high vibration-resistant and anti-slip tension clamp according to claim 2, characterized in that: The inner ring (22) has a pair of symmetrical arc grooves (221) inside. An arc rod (223) is slidably connected inside the arc groove (221). Both ends of the arc rod (223) are fixedly connected to the bottom wall of the arc groove (221) by compression springs (224).

4. A high vibration-resistant and anti-slip tension clamp according to claim 3, characterized in that: A connecting rod (225) is fixedly connected to the middle of the arc-shaped rod (223). The end of the connecting rod (225) away from the arc-shaped rod (223) is fixedly connected to the outer wall of the base (21). Correspondingly, a limiting groove (222) is opened on the inner wall of the inner ring (22) and communicates with the arc-shaped groove (221). The connecting rod (225) passes through the limiting groove (222) and can slide along the limiting groove (222).

5. A high vibration-resistant and anti-slip tension clamp according to claim 2, characterized in that: The inner ring (22) also includes an outer ring (23) fixedly connected to the end of the extension plate (15), and the inner wall of the outer ring (23) is connected to the inner ring (22) by a rubber ring (231).

6. A high vibration-resistant and anti-slip tension clamp according to claim 2, characterized in that: The pair of convergence plates (12) are funnel-shaped with the opening facing to the right. The clamping block (13) moves away from the opening of the convergence plate (12) under the tension of the cable. The inner sidewall of the convergence plate (12) is provided with a sliding groove (121). Multiple movable grooves (122) are provided inside the sliding groove (121). A tightening component (14) is slidably arranged inside the movable groove (122).

7. A high vibration-resistant and anti-slip tension clamp according to claim 6, characterized in that: The tightening assembly (14) includes a friction plate (141) slidably connected inside the groove (121). The friction plate (141) is made of sintered ceramic powder material, and its side near the clamping block (13) is tightly fitted to the outer wall of the clamping block (13).

8. A high vibration-resistant and anti-slip tension clamp according to claim 7, characterized in that: The side wall of the friction plate (141) is fixedly connected to a limiting post (142), the limiting post (142) is slidably inserted inside the movable groove (122), and the axis of the limiting post (142) is perpendicular to the axis of the cable.

9. A high vibration-resistant and anti-slip tension clamp according to claim 8, characterized in that: A limiting ring (143) is fitted and fixed on the limiting post (142). The side wall of the limiting ring (143) is closely attached to the outer wall of the inclined converging plate (12) to limit the axial movement of the limiting post (142) and prevent the tightening assembly (14) from loosening.

10. A high vibration-resistant and anti-slip tension clamp according to claim 8, characterized in that: The limiting post (142) has an annular groove (144), and the tightening assembly (14) also includes a cable (145). One end of the cable (145) is fixed to the base (21) near the clamping block (13). After the tension clamp is installed, the other end of the cable (145) is tightened and wound in the annular groove (144).

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