Disassembling tool for lsz joint plate of overhead transmission line

Abstract

This utility model provides a tool for disassembling and assembling LSZ connectors for overhead transmission lines. It is installed between the LF connector and fittings of a tension string. A saddle-shaped fixing support is installed on the LF connector. A pair of main side support plates are symmetrically installed on both sides of the saddle-shaped fixing support. A pair of auxiliary side support plates are installed at both ends of the two main side support plates. A pair of connecting plates are symmetrically arranged on each main side support plate. A tensioner assembly is installed at the center of each auxiliary side support plate and on each connecting plate. A side clamping plate assembly is installed between the tensioner assemblies on both sides of the main side support plates, and a middle clamping plate assembly is installed between the tensioner assemblies on both sides of the auxiliary side support plates. This tool allows for direct disassembly and assembly of the LSZ connector without loosening the entire tension string, shortening the overall operation time and improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hardware assembly and disassembly technology, specifically to an LSZ connector assembly and disassembly tool for overhead transmission lines. Background Technology

[0002] In overhead transmission lines, tension insulator strings serve as key load-bearing components, primarily supporting the suspended conductors and bearing the tension emanating from them. This ensures the stability and mechanical strength of the line, preventing conductor shifting due to wind or snow loads. Meanwhile, LSZ connecting plates act as connecting hardware, securely fixing the insulator strings to towers or other structural components, achieving reliable mechanical connections, and maintaining the overall safety and durability of the system under extreme environmental conditions.

[0003] In the prior art, patent publication number CN1202377908A discloses a tension string with a looper for overhead transmission lines, and patent publication number CN1202377907A discloses a tension string with a side ring structure for overhead transmission lines. Both of these utility model patents mention connecting disc insulators and LSZ connecting plates sequentially between the tower and the conductor, as well as multiple shielding rings set perpendicular to the conductor direction on the outside of the conductor. The multiple disc insulators are connected to multiple conductors by the LSZ connecting plates. The tension string composed of this can effectively avoid wear on the conductor and shielding rings. However, the technical solutions of these two utility models overlook a very important problem. During the conductor erection process of newly built overhead transmission lines, due to improper construction, the LSZ connecting plates in the tension string may experience weld cracking and bending. Once the above phenomena occur, the LSZ connecting plates need to be replaced. Currently, due to the lack of suitable disassembly and assembly tools in actual construction, the entire tension string must first be loosened, and then the hardware on the tension string must be disassembled one by one until the LSZ connector that needs to be replaced is removed. Finally, a new LSZ connector is installed, resulting in low construction efficiency. The main method for replacing the LSZ connector is as follows: First, install temporary anchor points, motorized winches, and steering pulleys on the ground; second, install steering pulleys, nylon ropes, and wire ropes on the tower; third, install and tighten wire clamps on the multi-split conductors so that the tension string is not under tension and is only under its own weight; fourth, remove the hardware on the tension string one by one until the LSZ connector is removed; fifth, install the new LSZ connector and other removed hardware one by one; sixth, release the tension on the wire clamps and remove them; seventh, retrieve all tools and equipment. The original disassembly and assembly process is complex, requires many tools and personnel, has a large workload, and high construction costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an LSZ connector assembly / disassembly tool for overhead transmission lines. This tool can directly assemble and disassemble the LSZ connector without loosening the entire tension string, thus shortening the overall operation time and improving construction efficiency. It solves the technical problems of low construction efficiency, cumbersome steps, the need to disassemble multiple hardware components sequentially, the large number of tools and personnel, the large workload, and the high cost in existing processes.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an LSZ connector assembly / disassembly tool for overhead transmission lines, installed between the LF connector and fittings of a tension string. A saddle-shaped fixing support is installed on the LF connector. A pair of main side support plates are symmetrically installed on both sides of the saddle-shaped fixing support. A pair of secondary side support plates are installed at both ends of the two main side support plates. A pair of connecting plates are symmetrically arranged on each main side support plate. A tensioner assembly is installed at the center of each secondary side support plate and on each connecting plate. A side clamping plate assembly is installed between the tensioner assemblies on both sides of the main side support plate. A middle clamping plate assembly is installed between the tensioner assemblies on both sides of the secondary side support plate.

[0008] Furthermore, the tensioner assembly includes a first U-shaped hanging ring installed at the center of the secondary side support plate or the connecting support plate, a second U-shaped hanging ring installed on the first U-shaped hanging ring, a double-hook tensioner installed on the second U-shaped hanging ring, a third U-shaped hanging ring installed at the other end of the double-hook tensioner, and a fourth U-shaped hanging ring installed on the third U-shaped hanging ring. The fourth U-shaped hanging ring is used to connect the side clamping plate assembly or the middle clamping plate assembly.

[0009] Furthermore, a pair of insulators are symmetrically installed above the LF connecting plate, and a pair of LSZ connecting plates are symmetrically installed below it. The LSZ connecting plate is composed of a main triangular plate and a secondary triangular plate installed perpendicularly to each other. The outer end of the main triangular plate of each LSZ connecting plate is connected to the hardware through a connecting hanger. The two ends of the secondary triangular plate of each LSZ connecting plate are connected to the hardware through connecting rings.

[0010] Furthermore, the fittings hanging below the outer ends of the pair of main triangular plates are tightened by the intermediate clamping plate assembly, and the fittings hanging below the two ends of the pair of secondary triangular plates are tightened by the side clamping plate assemblies on both sides respectively.

[0011] Furthermore, the fittings can be selected as DB adjustment plates or extension rods according to the requirements of the on-site working conditions.

[0012] Furthermore, the side clamping plate assembly includes a pair of symmetrically arranged side clamping plates. The inner side of the side clamping plates is provided with anti-slip teeth for firmly clamping the hardware. A pair of first bolt and nut assemblies for locking are symmetrically installed on both sides of the center of the two side clamping plates. Second bolt and nut assemblies are symmetrically installed on both outer ends. The second bolt and nut assemblies are detachably connected to the wire tensioner assembly through a first waist-shaped plate.

[0013] Furthermore, the intermediate clamping plate assembly includes a pair of symmetrically arranged intermediate clamping plates. The inner side of the intermediate clamping plates is provided with anti-slip teeth for firmly clamping the hardware. A pair of third bolt and nut assemblies for locking are symmetrically installed on both sides of the center of the two intermediate clamping plates. A fourth bolt and nut assembly is symmetrically installed on both outer ends. The fourth bolt and nut assembly is detachably connected to the tensioner assembly through a second waist-shaped plate.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a tool for disassembling and assembling LSZ connecting plates for overhead transmission lines, which has the following advantages:

[0016] 1. Stable structure and balanced force distribution: The saddle-shaped fixed support provides a solid support point by firmly adhering to the surface of the LF connecting plate. Combined with the symmetrically arranged main / secondary side support hanging plates, connecting support plates and tensioner components, a stable and reliable rigid support frame is formed. This ensures that during disassembly and assembly operations, especially when tension is applied by the double hook tensioner, the force can be effectively transmitted and evenly distributed, significantly reducing the risk of tool deformation or failure and ensuring operational safety.

[0017] 2. Secure clamping and reliable anti-slip: Both the side clamping plate assembly and the middle clamping plate assembly adopt a symmetrical double clamping plate structure. The carefully designed anti-slip teeth on the inner side can tightly grip the surface of the fitting. Combined with the adjustable locking force of multiple bolt and nut assemblies, it achieves strong and stable clamping of the DB adjustment plate or extension rod, effectively preventing the fitting from accidentally slipping off during high-altitude operations or under tension, and greatly improving the safety and reliability of operation.

[0018] 3. Convenient Operation and Improved Efficiency: The tool adopts a modular design, with major components such as the side clamping plate assembly, middle clamping plate assembly, and tensioner assembly connected and disassembled via standardized bolt and nut assemblies, facilitating rapid on-site assembly, disassembly, and adjustment. Simultaneously, the combination of the double-hook tensioner and U-shaped hanging ring design allows for more precise and controllable tension application and release, significantly simplifying the loosening and resetting operations of the LSZ connecting plate and hardware connection points, shortening overall operation time, and improving construction efficiency.

[0019] 4. High adaptability and versatility: The tool design fully considers the diversity of on-site working conditions. The fittings can be flexibly selected with DB adjustment plates or extension rods as needed. The clamping structures of the side clamping plate assembly and the middle clamping plate assembly can effectively accommodate these two types of fittings. In addition, the adjustability of the bolt and nut assembly also allows the tool to adapt to fittings of different sizes and specifications and certain installation position deviations, enhancing the tool's versatility and on-site applicability. Attached Figure Description

[0020] Figure 1 This is a perspective view of an LSZ connector plate disassembly and assembly tool for overhead transmission lines according to this utility model;

[0021] Figure 2 This is a three-dimensional installation structure diagram of an LSZ connector plate disassembly and assembly tool for overhead transmission lines according to this utility model;

[0022] Figure 3 for Figure 2 Another perspective of the three-dimensional installation structure diagram;

[0023] Figure 4 for Figure 2 The main view;

[0024] Figure 5 for Figure 2 The left view;

[0025] Figure 6 for Figure 2 A 3D view of the LSZ connector plate removal tool used to remove the overhead transmission line;

[0026] In the diagram: 1. LF connecting plate; 2. Fittings; 201. DB adjusting plate; 202. Extension rod; 3. Saddle-shaped fixed support; 4. Main side support hanging plate; 5. Secondary side support hanging plate; 6. Connecting support plate; 7. Tensioner assembly; 701. First U-shaped hanging ring; 702. Second U-shaped hanging ring; 703. Double hook tensioner; 704. Third U-shaped hanging ring; 705. Fourth U-shaped hanging ring; 8. Side clamp plate assembly; 801. 802. Side clamping plate; 803. First bolt and nut assembly; 804. Second bolt and nut assembly; 805. First waist-shaped plate; 9. Intermediate clamping plate assembly; 906. Intermediate clamping plate; 907. Third bolt and nut assembly; 908. Fourth bolt and nut assembly; 909. Second waist-shaped plate; 10. Insulator; 11. LSZ connecting plate; 1101. Main triangular plate; 1102. Secondary triangular plate; 12. Connecting hanging plate; 13. Connecting hanging ring. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 An LSZ connector assembly / disassembly tool for overhead transmission lines is installed between the LF connector 1 and the fittings 2 of a tension string for efficient disassembly and installation. A saddle-shaped fixing support 3 is installed on the LF connector 1 to provide a stable support point. A pair of main side support plates 4 are symmetrically installed on both sides of the saddle-shaped fixing support 3. A pair of secondary side support plates 5 are installed at both ends of the two main side support plates 4. A pair of connecting plates 6 are symmetrically installed on each main side support plate 4. A tensioner assembly 7 is installed at the center of each secondary side support plate 5 and on each connecting plate 6. These assemblies work together to adjust the tension. A side clamping plate assembly 8 is installed between the tensioner assemblies 7 on both sides of the main side support plate 4, and a middle clamping plate assembly 9 is installed between the tensioner assemblies 7 on both sides of the secondary side support plate 5 to ensure secure clamping.

[0029] The side clamping plate assembly 8 includes a pair of symmetrically arranged side clamping plates 801. The inner side of the side clamping plates 801 is provided with anti-slip teeth to securely clamp the hardware 2 and prevent slippage during operation. A pair of first bolt and nut assemblies 802 for locking are symmetrically installed on both sides of the center of the two side clamping plates 801 to adjust the clamping force. Second bolt and nut assemblies 803 are symmetrically installed at both ends of their outer sides. The second bolt and nut assemblies 803 are detachably connected to the tensioner assembly 7 through the first waist-shaped plate 804 for easy installation and removal. The intermediate clamping plate assembly 9 includes a pair of symmetrically arranged intermediate clamping plates 901. The inner side of the intermediate clamping plates 901 is also provided with anti-slip teeth to securely clamp the hardware 2. A pair of third bolt and nut assemblies 902 for locking are symmetrically installed on both sides of the center of the two intermediate clamping plates 901. A fourth bolt and nut assembly 903 is symmetrically installed on both outer ends. The fourth bolt and nut assembly 903 is detachably connected to the tensioner assembly 7 through the second waist plate 904 to ensure uniform force distribution.

[0030] In the above embodiment, the tensioner assembly 7 includes a first U-shaped hook 701 installed at the center of the secondary side support plate 5 or on the connecting support plate 6. A second U-shaped hook 702 is installed on the first U-shaped hook 701 to provide a flexible connection point. A double hook tensioner 703 is installed on the second U-shaped hook 702. A third U-shaped hook 704 is installed at the other end of the double hook tensioner 703. A fourth U-shaped hook 705 is installed on the third U-shaped hook 704. The fourth U-shaped hook 705 is used to connect to the side clamping plate assembly 8 or the middle clamping plate assembly 9 to achieve precise tension control.

[0031] In the above embodiment, a pair of insulators 10 are symmetrically installed above the LF connecting plate 1 for electrical isolation and safety protection, and a pair of LSZ connecting plates 11 are symmetrically installed below it. The LSZ connecting plate 11 consists of a main triangular plate 1101 and a secondary triangular plate 1102 installed perpendicularly to each other. The outer end of the main triangular plate 1101 of each LSZ connecting plate 11 is connected to the hardware 2 through a connecting hanging plate 12; the two ends of the secondary triangular plate 1102 of each LSZ connecting plate 11 are connected by connecting hanging rings 1. 3 connects to the hardware 2; the hardware 2 hanging below the outer ends of the pair of main triangular plates 1101 is clamped by the intermediate clamping plate assembly 9, and the hardware 2 hanging below the two ends of the pair of auxiliary triangular plates 1102 is clamped by the side clamping plate assemblies 8 on both sides respectively, to ensure the stability and reliability of the entire structure; the hardware 2 can be selected from the DB adjustment plate 201 or the extension rod 202 according to the requirements of the site conditions. The DB adjustment plate 201 is used for fine adjustment of length, and the extension rod 202 is used to extend the distance to adapt to different installation environments.

[0032] In summary, this tool, through its modular design and the coordinated work of precision components, significantly improves operational efficiency and safety in overhead transmission lines. Firstly, the saddle-shaped fixed support 3 provides a stable support point, effectively distributing stress and preventing structural displacement during operation. Secondly, the side clamp assembly 8 and the middle clamp assembly 9 ensure secure clamping of the fittings, preventing accidental slippage and enhancing operational reliability. Thirdly, the tensioner assembly 7, through the combination of the double-hook tensioner 703 and the corresponding U-shaped hanging ring, achieves precise tension adjustment, optimizing the accuracy of disassembly and installation. Furthermore, the detachable connection design of the bolt and nut assembly facilitates quick assembly and removal, significantly reducing on-site operation time. Finally, the flexible configuration of the DB adjustment plate or extension rod allows the tool to adapt to different sizes and environmental requirements, improving its versatility and practicality. The overall structure is stable and reliable, not only reducing manpower consumption and operational risks but also ensuring long-term durability and ease of maintenance in high-voltage transmission lines.

[0033] The working principle of using the LSZ connector disassembly tool to disassemble the LSZ connector on this overhead transmission line includes the following steps:

[0034] S1. Install and fix the saddle-shaped fixed support 3 on the LF connecting plate 1 to ensure that it is firmly attached to the surface of the connecting plate.

[0035] S2. A pair of main side support plates 4 are symmetrically installed on both sides of the saddle-shaped fixed support 3, and auxiliary side support plates 5 are installed at both ends of the main side support plates 4.

[0036] S3. Connecting support plates 6 are symmetrically installed on each main side support plate 4, and tensioner assemblies 7 are installed at the center of each connecting support plate 6 and the secondary side support plate 5.

[0037] S4. Install the side clamping plate assembly 8 between the tensioner assemblies 7 on both sides of the main side support plate 4, and then install the middle clamping plate assembly 9 between the tensioner assemblies 7 on both sides of the secondary side support plate 5.

[0038] S5. Use two side clamping plate assemblies 8 to clamp the hardware 2 below the two ends of a pair of auxiliary triangular plates 1102 hanging on each LSZ connecting plate 11. Apply pressure evenly during operation to ensure that they fit completely. Then, use the middle clamping plate assembly 9 to clamp the hardware 2 below the outer ends of a pair of main triangular plates 1101 hanging on each LSZ connecting plate 11.

[0039] S6. Apply tension using the double hook tensioner 703 to tighten the upper LF connecting plate 1 and the lower wire. Then, gradually loosen the connecting plate 12 or connecting ring 13 between the hardware 2 and the LSZ connecting plate 11 until the hardware 2 is completely released. Select the DB adjustment plate 201 or extension rod 202 according to the on-site working conditions for the hardware 2. Before loosening the connecting plate 12 or connecting ring 13, check whether the anti-slip teeth of the side clamping plate assembly 8 and the middle clamping plate assembly 9 are fully engaged with the surface of the hardware 2 to prevent accidental slippage.

[0040] S7. After disassembling the connecting plate 12 or connecting ring 13 from the DB adjustment plate 201 or extension rod 202, the LSZ connecting plate 11 can be removed to complete the disassembly of the LSZ connecting plate.

[0041] S8. After replacing the new LSZ connector, repeat steps S7-S1 in reverse order to complete the assembly of the LSZ connector and restore it to normal working condition.

[0042] In summary, this construction process significantly improves the efficiency and safety of disassembling and assembling the LSZ connector 11 through the symmetrical installation of modular components and the precise operation of the tensioner assembly 7. Specifically, the stable fit of the saddle-shaped fixing bracket 3 and the symmetrical arrangement of the main side support plate 4 and the secondary side support plate 5 ensure reliable fixation of the tools under complex working conditions; the synergistic effect of the tensioner assembly 7, the side clamping plate assembly 8, and the intermediate clamping plate assembly 9 can evenly apply tension and effectively prevent the hardware 2 from slipping, thereby greatly reducing the risks of high-altitude operations. In addition, this disassembly and assembly process simplifies the complexity of operations, reduces interference with the normal operation of the transmission line, and avoids accidental slippage or equipment damage through the anti-slip toothed engagement check and gradual loosening mechanism, ensuring the safety of operators and the long-term stability of the line. This process not only shortens maintenance time but also improves the accuracy of connector replacement, is applicable to various field environments, and helps maintain the efficient operation of overhead transmission lines.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] 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 tool for disassembling and assembling LSZ connecting plates for overhead transmission lines, installed between the LF connecting plate (1) and the fittings (2) of a tension string, characterized in that: A saddle-shaped fixed support (3) is installed on the LF connecting plate (1). A pair of main side support plates (4) are symmetrically installed on both sides of the saddle-shaped fixed support (3). A pair of secondary side support plates (5) are installed at both ends of the two main side support plates (4). A pair of connecting plates (6) are symmetrically installed on each main side support plate (4). A tensioner assembly (7) is installed at the center of each secondary side support plate (5) and on each connecting plate (6). A side clamping plate assembly (8) is installed between the tensioner assemblies (7) on both sides of the main side support plate (4). A middle clamping plate assembly (9) is installed between the tensioner assemblies (7) on both sides of the secondary side support plate (5).

2. The LSZ connector assembly / disassembly tool for overhead transmission lines according to claim 1, characterized in that: The tensioner assembly (7) includes a first U-shaped hook (701) installed at the center of the secondary side support plate (5) or on the connecting support plate (6). A second U-shaped hook (702) is installed on the first U-shaped hook (701). A double hook tensioner (703) is installed on the second U-shaped hook (702). A third U-shaped hook (704) is installed at the other end of the double hook tensioner (703). A fourth U-shaped hook (705) is installed on the third U-shaped hook (704). The fourth U-shaped hook (705) is used to connect to the side clamping plate assembly (8) or the middle clamping plate assembly (9).

3. The LSZ connector assembly / disassembly tool for overhead transmission lines according to claim 1, characterized in that: A pair of insulators (10) are symmetrically installed above the LF connecting plate (1), and a pair of LSZ connecting plates (11) are symmetrically installed below it. The LSZ connecting plate (11) is composed of a main triangular plate (1101) and a secondary triangular plate (1102) installed perpendicularly to each other. The outer end of the main triangular plate (1101) of each LSZ connecting plate (11) is connected to the fitting (2) through a connecting hanging plate (12); the two ends of the secondary triangular plate (1102) of each LSZ connecting plate (11) are connected to the fitting (2) through a connecting hanging ring (13).

4. The LSZ connector assembly / disassembly tool for overhead transmission lines according to claim 3, characterized in that: The fittings (2) hanging below the outer ends of the pair of main triangular plates (1101) are tightened by the intermediate clamping plate assembly (9), and the fittings (2) hanging below the two ends of the pair of auxiliary triangular plates (1102) are tightened by the side clamping plate assemblies (8) on both sides respectively.

5. The LSZ connector assembly / disassembly tool for overhead transmission lines according to claim 4, characterized in that: The fittings (2) can be selected from DB adjustment plates (201) or extension rods (202) according to the requirements of the on-site working conditions.

6. The LSZ connector assembly / disassembly tool for overhead transmission lines according to claim 1, characterized in that: The side clamp assembly (8) includes a pair of symmetrically arranged side clamps (801). The inner side of the side clamps (801) is provided with anti-slip teeth for firmly clamping the hardware (2). A pair of first bolt and nut assemblies (802) for locking are symmetrically installed on both sides of the middle of the two side clamps (801). Second bolt and nut assemblies (803) are symmetrically installed on both outer ends. The second bolt and nut assemblies (803) are detachably connected to the wire tensioner assembly (7) through a first waist-shaped plate (804).

7. The LSZ connector assembly / disassembly tool for overhead transmission lines according to claim 1, characterized in that: The intermediate clamping plate assembly (9) includes a pair of symmetrically arranged intermediate clamping plates (901). The inner side of the intermediate clamping plate (901) is provided with anti-slip teeth for firmly clamping the hardware (2). A pair of third bolt and nut assemblies (902) for locking are symmetrically installed on both sides of the middle of the two intermediate clamping plates (901). A fourth bolt and nut assembly (903) is symmetrically installed on both ends of its outer side. The fourth bolt and nut assembly (903) is detachably connected to the tensioner assembly (7) through a second waist-shaped plate (904).

Images