Lightning-protection strain clamp for electric power engineering construction

Abstract

The utility model provides a lightning-protection strain clamp for electric power engineering construction, which comprises a sleeve and a steel anchor, the rear end of the steel anchor is fixedly connected with a lantern ring, one end of the sleeve is fixedly connected with a connecting rod, the outer wall of the sleeve is provided with an accommodating groove, and the accommodating groove is internally provided with a plurality of through holes penetrating through the inner wall of the sleeve. The utility model has the advantages that the strain clamp of which the pipe diameter is slightly greater than the diameter of the cable is adopted, the cable passes through the sleeve, the cable core is stripped out and is connected with the steel anchor, and the steel anchor is pressed by a hydraulic machine, so that the cable core is tightly pressed in the steel anchor. And then the steel anchor is connected to the sleeve. The locking sleeve is rotated to move the locking sleeve from the sleeve to the connecting plate, the connecting plate is tightly locked in the containing groove, and therefore the anchoring cone can be stably inserted into the cable, and locking of the cable is achieved. The casing pipe is connected through a hydraulic machine, so that the steel anchor is pressed in the casing pipe. And a strain clamp with a larger pipe diameter can be selected, so that the cable can be inserted more quickly, and the installation efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of tension clamp technology, and in particular to a tension clamp for lightning protection in power engineering construction. Background Technology

[0002] Lightning protection tension clamps are mainly used to fix lightning protection wires to load-bearing towers and bear the full tension of the lightning protection wires. They ensure the stable operation of the lightning protection wires in the power system, preventing slack or breakage caused by factors such as wind and temperature changes, thereby protecting the power system from lightning damage.

[0003] In existing technologies, lightning protection tension clamps mainly include wedge-type tension clamps, bolt-type tension clamps, and compression-type tension clamps. Among them, the compression-type tension clamp is used by passing the cable through the bushing, then stripping the conductor and connecting it to the steel anchor. A hydraulic press is used to apply pressure to the steel anchor, compressing the conductor inside the anchor. The steel anchor is then connected to the bushing, and a hydraulic press is used to connect the bushing, compressing the anchor inside the bushing. However, because tension clamps with bushing inner diameters close to the cable diameter are often selected, jamming often occurs when the cable is inserted into the bushing, affecting the installation efficiency of the tension clamp. Therefore, an improved tension clamp for lightning protection in power engineering construction is proposed. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a tension clamp for lightning protection in power engineering construction, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a tension clamp for lightning protection in power engineering construction, including a sleeve and a steel anchor. A collar is fixedly connected to the rear end of the steel anchor, and a connecting rod is fixedly connected to one end of the sleeve. A receiving groove is provided on the outer wall of the sleeve, and a plurality of through holes penetrating the inner wall of the sleeve are provided in the receiving groove. An anchoring cone is inserted into the through holes, and a connecting plate is fixedly connected to the outer end of the anchoring cone.

[0007] The sleeve is threaded with a locking sleeve, and a rotating handle is fixedly connected to the outside of the locking sleeve. The connecting plate is threaded to connect with the locking sleeve.

[0008] Preferably, in any of the above solutions, the sleeve, connecting plate, and locking sleeve are provided with a plurality of heat dissipation holes, which are evenly arranged circumferentially on the sleeve and locking sleeve.

[0009] The above technical solution employs a sleeve and steel anchor to form the main structure of the tension clamp. The sleeve is responsible for wrapping and fixing the conductor, ensuring a tight connection between the conductor and the clamp. During the crimping process, the sleeve undergoes plastic deformation to tightly bond with the conductor, forming a unified whole, thus providing sufficient mechanical strength and electrical connection. The main function of the steel anchor is to connect and fix the steel core of the steel-cored aluminum stranded wire. It is a key load-bearing component in the compression-type tension clamp, responsible for transmitting the tension on the conductor. The steel anchor is typically connected to the sleeve or other components through specific connection methods (such as bolted connections, welding, etc.) to ensure the stability and reliability of the entire clamp structure. Heat dissipation holes are provided on the sleeve, connecting plate, and locking sleeve to facilitate the dissipation of heat from the cable.

[0010] Preferably, the outer wall of the steel anchor and the inner wall of the sleeve are provided with matching threads, and the connecting rod is fixedly connected to the sleeve by a connecting plate and bolts.

[0011] Preferably, in any of the above solutions, the receiving groove has a circular structure and the through holes have a plurality of holes.

[0012] Preferably, in any of the above schemes, the plurality of through holes are evenly arranged around the circumference of the receiving groove, and the plurality of through holes are evenly arranged along the length direction of the receiving groove.

[0013] The above technical solution involves: threads being formed on the outer wall of the steel anchor and the inner wall of the sleeve to facilitate the connection between the steel anchor and the sleeve. A receiving groove is formed on the outer wall of the sleeve to provide space for the connecting plate. Through holes are formed within the receiving groove to provide space for the anchoring cone. The anchoring cone is inserted into the through hole, allowing it to be inserted on the outside of the cable after insertion, thus preventing the cable from being pulled out of the sleeve. Several through holes are evenly distributed within the receiving groove to facilitate anchoring the cable at different positions, which helps improve the overall stability of the cable.

[0014] Preferably, in any of the above schemes, the inner surface of the anchoring cone is inclined, and there are several connecting plates that are evenly arranged circumferentially in the receiving groove.

[0015] Preferably, in any of the above solutions, the connecting plate adopts an arc-shaped structure, and the end of the connecting plate is provided with an inclined section.

[0016] The above technical solution employs the following: The inner surface of the anchoring cone is beveled to facilitate movement of the anchoring cone outwards from the sleeve when the cable is inserted. A locking sleeve is installed on the sleeve, rotatably connected to the outside of the connecting plate, thereby firmly locking the connecting plate within the receiving groove. This allows for stable insertion of the anchoring cone into the cable, achieving cable locking. A handle is provided on the outside of the locking sleeve, allowing operators to easily rotate the locking sleeve to lock it onto the connecting plate. An inclined section is provided at the end of the connecting plate to facilitate the transition of the locking sleeve from the sleeve to the connecting plate.

[0017] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0018] 1. The tension clamp used for lightning protection in this power engineering construction features a structure including a receiving groove, through hole, anchor cone, connecting plate, locking sleeve, and rotating handle. During use, a tension clamp with a pipe diameter slightly larger than the cable diameter is used. The cable is passed through the bushing, and the conductor core is stripped and connected to the steel anchor. A hydraulic press is used to press the steel anchor, compressing the conductor core within it. The steel anchor is then connected to the bushing. The locking sleeve is rotated to move it from the bushing to the connecting plate, tightly locking the connecting plate within the receiving groove. This allows the anchor cone to be stably inserted into the cable, achieving cable locking. The hydraulic press is then used to connect the bushing, compressing the steel anchor within it. Using a tension clamp with a slightly larger pipe diameter allows for faster cable insertion, improving installation efficiency.

[0019] 2. The tension clamps used for lightning protection in this power engineering construction have heat dissipation holes on the bushing, connecting plate, and locking sleeve to facilitate the outward transfer of heat from the cable. Threads are provided on the outer wall of the steel anchor and the inner wall of the bushing for easy connection between the steel anchor and the bushing. Several through holes are evenly distributed within the receiving groove to facilitate anchoring the cable at different positions, thus improving the overall stability of the cable. A rotating handle is provided on the outside of the locking sleeve for easy rotation by the operator to lock the locking sleeve onto the connecting plate. An inclined section is provided at the end of the connecting plate to facilitate the transition of the locking sleeve from the bushing to the connecting plate.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;

[0025] Figure 4 This is a schematic diagram of the structure of this utility model after the locking sleeve is removed.

[0026] In the diagram: 1-sleeve, 2-steel anchor, 3-ring, 4-connecting rod, 5-receiving groove, 6-through hole, 7-anchoring cone, 8-connecting plate, 9-locking sleeve, 10-handle. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] like Figures 1-4 As shown, this utility model includes a sleeve 1 and a steel anchor 2. The rear end of the steel anchor 2 is fixedly connected to a collar 3. One end of the sleeve 1 is fixedly connected to a connecting rod 4. A receiving groove 5 is provided on the outer wall of the sleeve 1. Several through holes 6 penetrating the inner wall of the sleeve 1 are provided in the receiving groove 5. An anchoring cone 7 is inserted into the through holes 6. A connecting plate 8 is fixedly connected to the outer end of the anchoring cone 7.

[0030] A locking sleeve 9 is threadedly connected to the sleeve 1, and a rotating handle 10 is fixedly connected to the outside of the locking sleeve 9. The connecting plate 8 is threaded to connect with the locking sleeve 9.

[0031] Example 1: Several heat dissipation holes are provided on the sleeve 1, connecting plate 8, and locking sleeve 9, and these holes are evenly arranged circumferentially on the sleeve 1 and locking sleeve 9. The sleeve 1, together with the steel anchor 2, forms the main structure of the tension clamp. The sleeve 1 is responsible for wrapping and fixing the conductor, ensuring a tight connection between the conductor and the clamp. During the crimping process, the sleeve 1 undergoes plastic deformation to tightly bond with the conductor, forming a whole, thereby providing sufficient mechanical strength and electrical connection. The main function of the steel anchor 22 is to connect and fix the steel core of the steel-cored aluminum stranded wire. It is a key load-bearing component in the compression-type tension clamp, responsible for transmitting the tension on the conductor. The steel anchor 2 is usually connected to the sleeve 1 or other components through specific connection methods (such as bolt connection, welding, etc.) to ensure the stability and reliability of the entire clamp structure. Heat dissipation holes are provided on the sleeve 1, connecting plate 8, and locking sleeve 9 to facilitate the outward transfer of heat from the cable.

[0032] Example 2: The outer wall of the steel anchor 2 and the inner wall of the sleeve 1 are provided with matching threads. The connecting rod 4 is fixedly connected to the sleeve 1 by a connecting plate and bolts. The receiving groove 5 has a circular structure and several through holes 6. These through holes 6 are evenly arranged circumferentially within the receiving groove 5 and along its length. Threads are provided on the outer wall of the steel anchor 2 and the inner wall of the sleeve 1 to facilitate the connection between the steel anchor 2 and the sleeve 1. The receiving groove 5 is provided on the outer wall of the sleeve 1, providing space for the connecting plate 8. Through holes 6 are provided within the receiving groove 5 to provide space for the anchoring cone 7. The anchoring cone 7 is inserted into the through holes 6, allowing it to be inserted on the outside of the cable after insertion, thus preventing the cable from being pulled out of the sleeve 1. The even arrangement of the through holes 6 within the receiving groove 5 facilitates anchoring the cable at different positions, improving the overall stability of the cable.

[0033] Example 3: The inner surface of the anchoring cone 7 is beveled, and several connecting plates 8 are evenly arranged circumferentially within the receiving groove 5. The connecting plates 8 have an arc-shaped structure, and the ends of the connecting plates 8 are provided with inclined sections. The beveled inner surface of the anchoring cone 7 facilitates the movement of the anchoring cone 7 towards the outside of the sleeve 1 when the cable is inserted into the sleeve 1. A locking sleeve 9 is provided on the sleeve 1, which is rotatably connected to the outside of the connecting plate 8, thereby tightly locking the connecting plate 8 within the receiving groove 5. This allows the anchoring cone 7 to be stably inserted into the cable, achieving cable locking. A handle 10 is provided on the outside of the locking sleeve 9, allowing the operator to rotate the locking sleeve 9 to lock it onto the connecting plate 10. An inclined section is provided at the end of the connecting plate 8, facilitating the transition of the locking sleeve 9 from the sleeve 1 to the connecting plate 10.

[0034] The working principle of this utility model is as follows:

[0035] S1. Use a tension clamp with a pipe diameter slightly larger than the cable diameter to pass the cable through the sleeve 1, then strip the wire core and connect it to the steel anchor 2. Use a hydraulic press to apply pressure to the steel anchor so that the wire core is pressed tightly inside the steel anchor.

[0036] S2. Next, connect the steel anchor 2 to the sleeve 1. Rotate the locking sleeve 9 to move it from the sleeve 1 to the connecting plate 8, and lock the connecting plate 8 tightly in the receiving groove 5. In this way, the anchoring cone 7 can be stably inserted into the cable to lock the cable.

[0037] S3. Use a hydraulic press to connect the casing, so that the steel anchor is pressed tightly inside the casing.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] 1. The tension clamp used for lightning protection in this power engineering construction, through its structure including a receiving groove 5, through hole 6, anchoring cone 7, connecting plate 8, locking sleeve 9, and rotating handle 10, is used in conjunction with a tension clamp with a pipe diameter slightly larger than the cable diameter. The cable is passed through the sleeve 1, and the wire core is stripped and connected to the steel anchor 2. A hydraulic press is used to press the steel anchor, compressing the wire core within it. The steel anchor 2 is then connected to the sleeve 1. The locking sleeve 9 is rotated to move it from the sleeve 1 to the connecting plate 8, tightly locking the connecting plate 8 within the receiving groove 5. This allows the anchoring cone 7 to be stably inserted into the cable, achieving cable locking. The hydraulic press is then used to connect the sleeve, compressing the steel anchor within it. Using a tension clamp with a slightly larger pipe diameter allows for faster cable insertion, improving installation efficiency.

[0040] 2. The tension clamp used for lightning protection in this power engineering construction has heat dissipation holes on the bushing 1, connecting plate 8, and locking sleeve 9 to facilitate the outward transfer of heat from the cable. Threads are provided on the outer wall of the steel anchor 2 and the inner wall of the bushing 1 to facilitate the connection between the steel anchor 2 and the bushing 1. Several through holes 6 are evenly arranged in the receiving groove 5 to facilitate the anchoring of the cable at different positions, which helps to improve the overall stability of the cable. A handle 10 is provided on the outside of the locking sleeve 9 to facilitate the worker to rotate the locking sleeve 9 to lock it onto the connecting plate 10. An inclined section is provided at the end of the connecting plate 8 to facilitate the transition of the locking sleeve 9 from the bushing 1 to the connecting plate 10.

Claims

1. A strain clamp for lightning protection in power engineering construction, comprising a sleeve pipe (1) and a steel anchor (2), a rear end of the steel anchor (2) being fixedly connected with a sleeve ring (3), one end of the sleeve pipe (1) being fixedly connected with a connecting rod (4); characterized in that, The outer wall of the sleeve (1) is provided with a containing groove (5), a plurality of through holes (6) are formed in the containing groove (5) and extend through the inner wall of the sleeve (1), an anchoring cone (7) is inserted into each through hole (6), and the outer end of the anchoring cone (7) is fixedly connected with a connecting plate (8). The sleeve (1) is threadedly connected with a locking sleeve (9), the outer side of the locking sleeve (9) is fixedly connected with a rotating handle (10), and the connecting plate (8) is provided with threads that can be connected with the locking sleeve (9).

2. The strain clamp for lightning protection in power engineering construction according to claim 1, characterized in that: A plurality of heat dissipation holes are formed in the sleeve (1), the connecting plate (8) and the locking sleeve (9), and the heat dissipation holes are uniformly arranged in the circumferences of the sleeve (1) and the locking sleeve (9).

3. The strain clamp for lightning protection in power engineering construction according to claim 2, characterized in that: The outer wall of the steel anchor (2) and the inner wall of the sleeve (1) are provided with matching threads, and the connecting rod (4) is fixedly connected to the sleeve (1) through the connecting plate and a bolt.

4. The strain clamp for lightning protection in power engineering construction according to claim 3, characterized in that: The containing groove (5) has a circular structure, and the through holes (6) are a plurality of.

5. The strain clamp for lightning protection in power engineering construction according to claim 4, characterized in that: The through holes (6) are uniformly arranged in the circumference of the containing groove (5), and the through holes (6) are uniformly arranged along the length direction of the containing groove (5).

6. The strain clamp for lightning protection in power engineering construction according to claim 5, characterized in that: The inner side of the anchoring cone (7) has an inclined surface, the connecting plate (8) is a plurality of and is uniformly arranged in the circumference of the containing groove (5).

7. The strain clamp for lightning protection in power engineering construction according to claim 6, characterized in that: The connecting plate (8) has an arc structure, and the end of the connecting plate (8) is provided with an inclined section.

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