High-voltage cable loading and unloading clamp

Abstract

The utility model is applicable to the technical field of electric power fittings, and provides a high-voltage cable loading and unloading clamp which comprises a hinged base, a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are symmetrically hinged to the two sides of the hinged base, an elastic pressing piece is hinged to the inner side of the second clamping arm, and a limiting hook is arranged on the inner side of the first clamping arm. An elastic clamping shaft is embedded in the limiting hook in a matched mode, an avoiding groove used for avoiding the elastic clamping shaft is formed in the end of the elastic pressing piece, two sets of torsional springs are symmetrically arranged on the two sides of the first clamping arm and the two sides of the second clamping arm, and the two ends of the torsional springs are connected with the elastic clamping shaft and a spring installation base of the second clamping arm respectively. The working end of the first clamping arm and the working end of the second clamping arm are respectively provided with a bending part which is reversely bent towards the outer side of the cable. By arranging the hinged base, the first clamping arm and the second clamping arm, the loading and unloading clamp can stably clamp a high-voltage cable, and three-point type elastic clamping of the cable is achieved through dynamic matching of the elastic pressing piece and the elastic clamping shaft and the pre-tightening force of the torsional spring.

Description

Technical Field

[0001] This utility model belongs to the field of power fittings technology, and in particular relates to a high-voltage cable loading and unloading clamp. Background Technology

[0002] High-voltage cables are a crucial component of power transmission systems, widely used in power, communications, and industrial fields. Due to their large size and heavy weight, loading and unloading operations play a vital role in the transportation, installation, and maintenance of cables.

[0003] For example, Chinese Patent 201720861292.7 discloses a high-voltage cable fixing clamp that is suitable for high-voltage cables of different diameters. It is easy to adjust, saves costs, provides a firm connection, extends service life, and prevents the cable from sliding along the axial direction.

[0004] However, cables are heavy and large in size, and manual loading and unloading are not only labor-intensive but also prone to errors, which may damage the cables or injure workers. Secondly, the surface of cables is generally smooth or has a special coating, which makes the fixing clamp easy to slip off, creating a safety hazard.

[0005] Based on this, this utility model designs a high-voltage cable loading and unloading clamp to solve the above problems. Utility Model Content

[0006] The purpose of this utility model embodiment is to provide a high-voltage cable loading and unloading clamp, which aims to solve the technical problems existing in the prior art mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-voltage cable loading and unloading clamp, including a hinged base, a first clamping arm and a second clamping arm symmetrically hinged to both sides of the hinged base, an elastic clamping plate hinged to the inner side of the second clamping arm, a limit hook provided on the inner side of the first clamping arm, an elastic locking shaft embedded in the limit hook, a clearance groove for avoiding the elastic locking shaft at the end of the elastic clamping plate, two sets of torsion springs symmetrically provided on both sides of the first clamping arm and the second clamping arm, the two ends of the torsion springs being connected to the elastic locking shaft and the spring mounting seat of the second clamping arm respectively, and the working ends of the first clamping arm and the second clamping arm both having a bent portion that folds back towards the outside of the cable.

[0008] Preferably, the elastic snap-fit ​​shaft is made of carbon fiber composite material.

[0009] Preferably, both the first and second clamping arms have arc-shaped grooves on their inner sides, and the curvature of the arc-shaped grooves matches the curvature of the outer wall of the cable to better fit the cable.

[0010] Preferably, the inner side of the first clamping arm is provided with a guide groove, the width of which is greater than the thickness of the elastic clamping sheet, so as to allow the elastic clamping sheet to slide along the guide groove in the clamping state of the loading and unloading clamp, thereby achieving uniform clamping of the cable.

[0011] Preferably, the working surface of the elastic clamping plate is in contact with the cable surface to improve the clamping stability of the cable.

[0012] Preferably, the end of the elastic clamping piece is provided with a limiting groove for abutting against the surface of the elastic locking shaft when the loading and unloading clamp is released.

[0013] The present invention is implemented as follows:

[0014] I. This utility model, by setting a hinged base, a first clamping arm, and a second clamping arm, enables the loading and unloading clamp to securely hold high-voltage cables. Users can clamp or release the cable by rotating the first and second clamping arms around the hinged base. Through the dynamic cooperation between the elastic clamping plate and the elastic locking shaft, as well as the preload of the torsion spring, a three-point elastic clamping of the cable is achieved. Under the action of the torsion spring, the first and second clamping arms move closer to the cable, while the elastic clamping plate slides along the cable surface under the action of the guide groove until the end of the elastic clamping plate engages with the elastic locking shaft. At this point, the elastic clamping plate, the elastic locking shaft, and the limiting hook together constitute the clamping structure for the cable, achieving stable clamping of the cable. The interference fit between the elastic locking shaft and the limiting hook generates a self-locking effect, effectively preventing axial slippage of the cable and providing a strong guarantee for the stable operation of the power system.

[0015] Second, the reverse folding structure of the bending part of this utility model cross-closes the opening and closing ends of the first and second clamping arms during clamping, increasing clamping stability. Even when the cable is heavy or the surface is slippery, it can prevent the loading and unloading clamp from slipping, ensuring operational safety. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamping state of the loading and unloading clamp provided in an embodiment of the present utility model;

[0018] Figure 3 This is a front view of the clamping state of the loading and unloading clamp provided in an embodiment of the present utility model.

[0019] In the figure: 1. Hinged base; 2. First clamping arm; 3. Second clamping arm; 301. Spring mounting seat; 4. Elastic clamping plate; 5. Limiting hook; 6. Elastic snap-fit ​​shaft; 7. Clearance groove; 8. Torsion spring; 9. Cable; 10. Bending part; 11. Arc-shaped groove; 12. Guide groove; 13. Limiting groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0022] like Figure 1 - Figure 2 As shown, in one embodiment, a high-voltage cable loading and unloading clamp is proposed, including a hinged base 1, a first clamping arm 2 and a second clamping arm 3 symmetrically hinged to both sides of the hinged base 1, an elastic clamping plate 4 hinged to the inner side of the second clamping arm 3, a limit hook 5 provided on the inner side of the first clamping arm 2, an elastic locking shaft 6 fitted inside the limit hook 5, an avoidance groove 7 for avoiding the elastic locking shaft 6 at the end of the elastic clamping plate 4, two sets of torsion springs 8 symmetrically provided on both sides of the first clamping arm 2 and the second clamping arm 3, the two ends of the torsion springs 8 being connected to the elastic locking shaft 6 and the spring mounting seat 301 of the second clamping arm 3 respectively, and the working ends of the first clamping arm 2 and the second clamping arm 3 are both provided with a bent portion 10 that folds back towards the outside of the cable 9.

[0023] In practical application, when clamping cable 9, the operator applies force to close the first clamping arm 2 and the second clamping arm 3. The elastic clamping plate 4 forms a dynamic fit with the elastic locking shaft 6 through the relief groove 7. Under the preload of the torsion spring 8, the elastic locking shaft 6 and the limiting hook 5 are interference-fitted to produce a self-locking effect, so that the clamping plate 4 forms a three-point elastic clamping of cable 9. The reverse folding structure of the bending part 10 cross-closes the opening and closing ends of the first clamping arm 2 and the second clamping arm 3 during clamping, thereby preventing the cable 9 from sliding axially.

[0024] This embodiment increases the stability of clamping by providing bending portions 10 on the first clamping arm 2 and the second clamping arm 3. Even when the cable 9 is heavy or the surface is slippery, it can effectively prevent the clamp from slipping, ensuring the safety of operation and providing a strong guarantee for the stable operation of the power system.

[0025] Please see Figure 1 In a preferred embodiment of this utility model, the elastic snap-fit ​​shaft 6 is made of carbon fiber composite material.

[0026] In practical applications, the elastic snap-fit ​​shaft 6 made of carbon fiber has high strength and rigidity, while being lightweight. This effectively improves the durability and portability of the loading and unloading clamp. When subjected to the radial preload of the torsion spring 8, it can maintain the elastic deformation to achieve self-locking adjustment, and it also has the advantage of being lighter than steel materials, thus avoiding excessive weight of the loading and unloading tools and causing operator fatigue.

[0027] Please see Figure 1 In another preferred embodiment of this utility model, the inner sides of the first clamping arm 2 and the second clamping arm 3 are provided with arc-shaped grooves 11, the curvature of which matches the curvature of the outer wall of the cable 9, so as to better fit the cable 9.

[0028] In this embodiment, the arc-shaped groove 11 increases the contact area, thereby reducing the clamping pressure and generating a uniformly distributed contact stress on the surface of the cable 9, preventing local stress concentration from damaging the insulation layer.

[0029] Please see Figure 2 As another preferred embodiment of the present invention, the inner side of the first clamping arm 2 is provided with a guide groove 12. The width of the guide groove 12 is greater than the thickness of the elastic pressing plate 4. It is used to allow the elastic pressing plate 4 to slide along the guide groove 12 when the clamping clamp is in the loading and unloading state, thereby achieving uniform pressing of the cable 9.

[0030] In this embodiment, the guide groove 12 guides the clamping plate 4 during the clamping process, so that the clamping plate 4 has more sufficient contact with the cable 9, reduces the damage caused by sliding friction, and ensures the stability of the cable 9 during the clamping process, eliminating surface scratches caused by sliding friction.

[0031] Please see Figure 3 In another preferred embodiment of this utility model, the working surface of the elastic clamping plate 4 is in contact with the surface of the cable 9 to improve the clamping stability of the cable 9.

[0032] In this embodiment, the working surface of the elastic clamping plate 4 is made of an anti-slip material, such as rubber or silicone, to increase the friction with the surface of the cable 9, prevent the loading and unloading clamp from slipping accidentally during use, and ensure the safety of operation.

[0033] Please see Figure 3 In another preferred embodiment of this utility model, the end of the elastic clamping piece 4 is provided with a limiting groove 13 for abutting against the surface of the elastic locking shaft 6 when the loading and unloading clamp is released.

[0034] In this embodiment, when the loading and unloading clamp is in the open state, the inner wall of the limiting groove 14 contacts the surface of the elastic snap-fit ​​shaft 6 to form a constraint angle, thereby controlling the reset stroke of the clamping plate 4 and preventing excessive rebound from causing collision damage to the components.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high voltage cable termination clamp, characterized in that, The utility model relates to a cable clamp, including articulated base (1), the first clamping arm (2) and second clamping arm (3) of symmetry articulated in both sides of articulated base (1), the inside articulated elastic compression sheet (4) of second clamping arm (3), the inside limit hook (5) of first clamping arm (2) is provided with, the elastic clamping axle (6) of cooperation embedding is matched in the inside limit hook (5), the avoiding slot (7) for avoiding elastic clamping axle (6) is set up to the end of elastic compression sheet (4), the both sides of first clamping arm (2) and second clamping arm (3) are provided with two groups of torsional spring (8) symmetry, and the both ends of torsional spring (8) are connected with elastic clamping axle (6) and the spring mounting seat (301) of second clamping arm (3) respectively, and the working end of first clamping arm (2) and second clamping arm (3) is equipped with the bending part (10) of the anti -folding to cable (9) outside.

2. A high voltage cable termination clamp according to claim 1, characterised in that The elastic clamping axle (6) is made of carbon fiber composite material.

3. A high voltage cable termination clamp according to claim 1, wherein, The inside of first clamping arm (2) and second clamping arm (3) is provided with arc recess (11), and the arc of arc recess (11) is matched with the outer wall arc of cable (9) to better adhere to cable (9).

4. A high voltage cable termination clamp according to claim 1, wherein, The inside of first clamping arm (2) is provided with guide slot (12), and the width of guide slot (12) is greater than the thickness of elastic compression sheet (4), so that the elastic compression sheet (4) slides along the guide slot (12) in the loading and unloading clamping state, thereby realizing uniform compression of the cable (9).

5. A high voltage cable termination clamp according to claim 1, wherein, The working surface of the elastic compression sheet (4) is attached to the surface of the cable (9) to improve the clamping stability of the cable (9).

6. A high voltage cable termination clamp according to claim 1, wherein, The end of the elastic compression sheet (4) is provided with a limiting groove (13) for abutting against the surface of the elastic clamping axle (6) in the loosening state of the loading and unloading clamp.

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