A line clamp for stringing of a power transmission line project

Abstract

The utility model relates to power line clamp technical field especially relates to a transmission line engineering stringing is with wire clamp, including cable body, the detachable installation of cable body has metal clamp body, the inside of metal clamp body is equipped with stress buffer mechanism that increases static friction, the outside fixed mounting of metal clamp body has the connecting assembly for connecting the draw gear shackle, stress buffer mechanism includes the rubber pressure disc fixed mounting in the inside of metal clamp body, the utility model discloses through setting up rubber pressure disc and soft gasket in the inside of wire clamp, and the transition support plate is additionally established in the both ends of metal clamp body, can with the centralized pressure of fastening bolt high -efficient, evenly dispersed to cable body surface, avoided the traditional rigid wire clamp because of point contact or line contact and led to cable surface pressure injury and stress concentration problem, in addition, the transition support plate of both ends can form smooth support and guide to cable body, effectively prevent cable body and appear dead bend or excessive bending at the mouth of clamp.

Description

Technical Field

[0001] This utility model relates to the field of power line clamp technology, and in particular to a line clamp for stringing power transmission lines. Background Technology

[0002] In the construction of power transmission lines, stringing is a crucial step. Its core task is to lay out and secure the conductors between the transmission towers. During this process, wire clamps are often used to temporarily hold and pull the conductors in order to complete the laying, tensioning, and temporary anchoring of the conductors.

[0003] However, most existing construction clamps are rigid metal structures. In order to obtain sufficient friction during use, the sharp teeth on the inner wall of the clamp will be pressed into or even damage the surface of the conductor under great pressure. This can easily damage the zinc or aluminum alloy layer of the conductor. Moreover, the stress distribution is uneven. The impact load generated when the traction equipment starts and stops or passes the pulley will be directly transmitted to the conductor through the clamp, which can easily lead to broken strands inside the conductor or loosening of the clamp. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a wire clamp for overhead power transmission line engineering, which solves the technical problems of existing rigid wire clamps that easily damage the zinc layer of the conductor during use, have uneven stress distribution, and poor impact resistance. It has the advantages of effectively preventing conductor damage and uniform stress distribution.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a wire clamp for stringing power transmission lines, comprising a cable body, a metal clamp detachably mounted on the cable body, a stress buffer mechanism for increasing static friction on the inner side of the metal clamp, and a connecting component for connecting to the shackle of the traction equipment fixedly mounted on the outer side of the metal clamp. In use, the stress buffer mechanism first fixes the metal clamp at a designated position on the cable body, and then the connecting component is used to fix it to the shackle of the traction equipment, allowing the cable body to move under the action of the traction equipment. The stress buffer mechanism includes a rubber pressure plate fixedly mounted on the inner side of the metal clamp, transition plates symmetrically arranged at both ends of the metal clamp, a fastening bolt detachably mounted on the upper end of the metal clamp, and a fixing nut fixedly mounted on the metal clamp. The upper end of the metal clamp is open. After clamping, workers use the fastening bolt and the fixing nut to tighten the metal clamp, thus firmly fixing the metal clamp to the cable body.

[0006] Preferably, several rubber pressure plates are evenly spaced along the inner wall of the metal clamp to uniformly transmit the pressure generated by the fastening bolts to the surface of the cable body, while increasing the friction.

[0007] Preferably, a soft pad is adhered to the rubber pressure plate. The soft pad is located between the cable body and the rubber pressure plate, which can further disperse the fastening stress, protect the zinc layer or aluminum alloy layer on the surface of the cable body, and avoid stress concentration.

[0008] Preferably, the connecting assembly includes a first connecting block and a second connecting block fixedly mounted on a metal clamp. The first connecting block and the second connecting block are respectively provided with traction holes. When the cable is being pulled and transported, the shackle of the traction device will pass through the traction hole and thus be fixed to the metal clamp.

[0009] Preferably, both the first connecting block and the second connecting block are flexible connectors. The flexible connectors are made of ultra-high molecular weight polyethylene fiber braided ropes or steel wire ropes, which can effectively buffer traction impact and adapt to changes in conductor angle.

[0010] Preferably, the end of the flexible connector is an integral structure with the metal clamp, and the end of the flexible connector is formed in a special cavity inside the metal clamp by low melting point metal molding, thereby forming an integral structure.

[0011] By employing the above technical solution, this utility model provides a wire clamp for stringing power transmission lines, which has at least the following beneficial effects: 1. This utility model, by setting a rubber pressure plate and a soft pad on the inner side of the wire clamp and adding transition plates at both ends of the metal clamp, can efficiently and evenly distribute the concentrated pressure generated by the fastening bolts to the surface of the cable body, avoiding the problems of pressure damage and stress concentration on the cable surface caused by point contact or line contact in traditional rigid wire clamps. In addition, the transition plates at both ends can provide smooth support and guidance for the cable body, effectively preventing the cable body from having a dead bend or excessive bending at the clamp.

[0012] 2. By setting a first connecting block and a second connecting block, this utility model forms a robust and adaptable flexible traction hole, which can effectively absorb and buffer the instantaneous impact load generated when the traction device starts and stops or passes the pulley, making the entire traction process more stable and smooth, and significantly improving the adaptability of overhead line construction under complex working conditions and the overall operational safety. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram showing the state of the present invention during use; Figure 2 This is a schematic diagram of the stress buffer mechanism in this utility model; Figure 3This is a schematic diagram of the connecting component in this utility model.

[0014] In the diagram: 1. Cable body; 2. Metal clamp; 3. Stress buffer mechanism; 301. Rubber pressure plate; 302. Soft pad; 303. Transition support plate; 304. Fastening bolt; 305. Fixing nut; 4. Connecting assembly; 401. First connecting block; 402. Second connecting block; 403. Traction hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1 Existing construction clamps are mostly rigid metal structures. During use, to obtain sufficient friction, the sharp teeth on the inner wall of the clamp can locally press into or even damage the conductor surface under immense pressure, easily damaging the zinc or aluminum alloy layer of the conductor. Furthermore, uneven stress distribution means that impact loads generated during the starting and stopping of traction equipment and when passing over pulleys are directly transmitted to the conductor through the clamp, easily leading to broken strands inside the conductor or loosening of the clamp. To address this technical deficiency in existing technologies, such as... Figures 1-3 As shown, this embodiment proposes a wire clamp for stringing power transmission lines, which efficiently and evenly distributes the concentrated pressure generated by the fastening bolt 304 to the surface of the cable body 1. The wire clamp includes the cable body 1, on which a metal clamp 2 is detachably installed. The inner side of the metal clamp 2 is provided with a stress buffer mechanism 3 to increase static friction, and the outer side of the metal clamp 2 is fixedly installed with a connecting component 4 for connecting to the shackle of the traction equipment. When the wire clamp is in use, the stress buffer mechanism 3 is first used to fix the metal clamp 2 at a designated position on the cable body 1, and then the connecting component 4 is used to fix it to the shackle of the traction equipment, so that the cable body 1 can move under the action of the traction equipment.

[0017] Specifically, the stress buffer mechanism 3 includes a rubber pressure plate 301 fixedly installed inside the metal clamp 2. Several rubber pressure plates 301 are evenly spaced along the inner wall of the metal clamp 2 to uniformly transmit the pressure generated by the fastening bolt 304 to the surface of the cable body 1, while increasing the friction. A soft pad 302 is attached to the rubber pressure plate 301. The soft pad 302 is located between the cable body 1 and the rubber pressure plate 301, which can further disperse the fastening stress, protect the zinc layer or aluminum alloy layer on the surface of the cable body 1, and avoid stress concentration. Transition plates 303 are symmetrically arranged at both ends of the metal clamp 2. The fastening bolt 304 is detachably installed at the upper end of the metal clamp 2. A fixing nut 305 is fixedly installed on the metal clamp 2. The upper end of the metal clamp 2 is open. After clamping, the workers will use the fastening bolt 304 and the fixing nut 305 to tighten the metal clamp 2, so that the metal clamp 2 and the cable body 1 are firmly fixed together.

[0018] Specifically, the connecting component 4 includes a first connecting block 401 and a second connecting block 402 fixedly installed on the metal clamp 2. The first connecting block 401 and the second connecting block 402 are respectively provided with traction holes 403. When the cable is pulled and transported, the shackle of the traction device will pass through the traction hole 403 and thus be fixed to the metal clamp 2. The first connecting block 401 and the second connecting block 402 are both flexible connectors. The flexible connectors are made of ultra-high molecular weight polyethylene fiber braided rope sleeves or steel wire rope sleeves, which can effectively buffer the traction impact force and adapt to the change of the wire angle. The end of the flexible connector is integrated with the metal clamp 2. The end of the flexible connector is formed in a special cavity inside the metal clamp 2 by low melting point metal molding, thus forming an integrated structure.

[0019] As can be seen from the above, when using this clamp, firstly, the staff will remove the fastening bolt 304. At this time, the upper end of the metal clamp 2 is in an open state. Then, the metal clamp 2 is pressed into the designated position on the cable body 1.

[0020] Next, as Figure 3 As shown, the workers will use the fastening bolts 304 and the fixing nuts 305 to fasten the metal clamp 2. During the fastening process, multiple rubber pressure plates 301 will evenly transmit the pressure to the surface of the cable body 1, thereby increasing the friction between the metal clamp 2 and the cable body 1, so that it can move synchronously with the metal clamp 2.

[0021] Furthermore, the soft pad 302 installed between the cable body 1 and the metal clamp 2 can further disperse the fastening stress, protect the zinc layer or aluminum alloy layer on the surface of the cable body 1, avoid stress concentration, and effectively prevent the cable body 1 from being flattened and damaged.

[0022] In addition, such as Figure 2As shown, the two ends of the metal clamp 2 are respectively provided with transition plates 303 made of rubber material, which can provide a certain support for the cable body 1, so that the cable body 1 can be smoothly transitioned, avoiding dead bends or excessive bending at the clamp, thereby protecting the cable body 1.

[0023] Subsequently, the staff will pass the shackle of the traction device through the traction hole 403, so that the metal clamp 2 can move under the action of the traction device. When the metal clamp 2 moves, it will pull and transfer the cable body 1.

[0024] This embodiment, by setting a rubber pressure plate 301 and a soft pad 302 on the inner side of the wire clamp, and adding transition support plates 303 at both ends of the metal clamp body 2, can efficiently and evenly distribute the concentrated pressure generated by the fastening bolt 304 to the surface of the cable body 1, avoiding the problems of cable surface damage and stress concentration caused by point contact or line contact in traditional rigid wire clamps. In addition, the transition support plates 303 at both ends can provide smooth support and guidance for the cable body 1, effectively preventing the cable body 1 from having a dead bend or excessive bending at the clamp. Moreover, by setting a first connecting block 401 and a second connecting block 402, this embodiment forms a robust and self-adaptive flexible traction hole 403, which can effectively absorb and buffer the instantaneous impact load generated when the traction device starts and stops or passes through the pulley, making the entire traction process more stable and smooth, and significantly improving the adaptability of the overhead line construction under complex working conditions and the overall operational safety.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire clamp for overhead power transmission line construction, comprising a cable body (1), wherein a metal clamp (2) is detachably mounted on the cable body (1), characterized in that: The inner side of the metal clamp (2) is provided with a stress buffer mechanism (3) to increase static friction, and the outer side of the metal clamp (2) is fixedly installed with a connecting component (4) for connecting the traction equipment shackle. The stress buffer mechanism (3) includes a rubber pressure plate (301) fixedly installed inside the metal clamp (2), transition plates (303) are symmetrically arranged at both ends of the metal clamp (2), fastening bolts (304) are detachably installed at the upper end of the metal clamp (2), and fixing nuts (305) are fixedly installed on the metal clamp (2).

2. The wire clamp for stringing power transmission lines according to claim 1, characterized in that: The rubber pressure plate (301) is provided at equal intervals along the inner wall of the metal clamp (2).

3. A wire clamp for overhead line construction in power transmission line engineering according to claim 1, characterized in that: A soft pad (302) is attached to the rubber sheet (301), and the soft pad (302) is located between the cable body (1) and the rubber sheet (301).

4. A wire clamp for overhead line construction in power transmission line engineering according to claim 1, characterized in that: The connecting assembly (4) includes a first connecting block (401) and a second connecting block (402) fixedly installed on the metal clamp (2), and traction holes (403) are respectively opened on the first connecting block (401) and the second connecting block (402).

5. A wire clamp for overhead line construction in power transmission line engineering according to claim 4, characterized in that: Both the first connecting block (401) and the second connecting block (402) are flexible connectors.

6. A wire clamp for overhead line construction in power transmission line engineering according to claim 5, characterized in that: The end of the flexible connector and the metal clamp (2) are an integral structure.

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