Quick installation interface of lightning protection device
By integrating the design of double torsion springs and secondary protection devices, the problems of large size, insufficient fixing force and lack of secondary anti-loosening of existing wire fixing hardware are solved, achieving efficient and safe wire fixing and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-03-27
AI Technical Summary
Existing wire fasteners are large in size, lack sufficient fixing force, and have no secondary anti-loosening design, resulting in inconvenient installation, numerous safety hazards, and high maintenance costs.
The integrated design of the positioning column, which uses a double torsion spring and a secondary protection device, provides sufficient clamping force and releases the jamming through rotation under external force, thus achieving secondary anti-loosening.
It achieves efficient fixation within a compact space, reduces the risk of loosening and falling off, improves safety and versatility, and reduces maintenance costs.
Smart Images
Figure CN121749043A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power equipment fixing device, in particular to a quick installation interface of lightning protection device. BACKGROUND
[0002] In the installation operation of the arrester of the power system, the connection and fixation of the conductor and the arrester body are the key link to ensure the stable operation of the equipment. The existing wire fixing hardware in the industry has the following problems: Firstly, the spring assembly and the positioning component of the traditional wire fixing hardware are arranged in a dispersed manner, and each spring needs to be independently configured with a positioning structure, which results in a large overall size of the hardware, and the hardware cannot be adapted to the installation scene with compact space such as the transformer substation and the tower. At the same time, the dispersed components increase the operation steps of the on-site installation, and reduce the construction efficiency.
[0003] Secondly, the existing wire fixing hardware usually uses a single spring to provide a fixing force, and the compression force converted by the spring force is usually only 3-5 kg. However, the weight of the arrester body (including the conductor) is generally more than 6 kg. Under the working conditions of outdoor wind load and vibration, the conductor is prone to looseness, and the arrester body is prone to falling off, which may cause a short circuit of the line and damage to the equipment.
[0004] Thirdly, the existing wire fixing hardware does not have a secondary anti-loosening design. When the spring is accidentally opened by external force (such as accidental touch and foreign object impact), the conductor will directly come off the wire slot, and the arrester will lose the fixed support, which not only affects the power supply reliability, but also may cause electric shock and equipment falling accidents.
[0005] Finally, the spring and the buckle of the existing wire fixing hardware are mostly customized structures. Different types of arresters need to be matched with different types of hardware, which results in a large number of types of spare parts in stock, and high cost of maintenance and replacement in the later period.
[0006] In view of the above problems, there is an urgent need in the field for a wire fixing hardware with compact space, sufficient fixing pressure, and secondary anti-loosening function to solve the defects of the existing technology. SUMMARY
[0007] The technical problem to be solved by the present application is how to realize the integrated arrangement of the spring assembly in a compact space, improve the compression force of the spring assembly, add a secondary anti-loosening structure, improve the universality of the components, and reduce the maintenance cost.
[0008] The present application is realized by the following technical scheme: The utility model provides a lightning protection device's quick installation interface, its characterized in being including fixed wire fitting body 1, positioning column 2, double torsional pressure line spring 3 and secondary protection assembly 4, the middle part of fixed wire fitting body 1 is equipped with wire slot, the outside of fixed wire fitting body 1 is equipped with at least 1 side wall 5, positioning column 2 is connected in the side wall 5 through, one end of double torsional pressure line spring 3 is sleeved on positioning column 2, and the other end is butt joint in the limiting hole on the side wall 5, secondary protection assembly 4 includes the secondary protection device double torsional spring 401 and secondary protection device 402 that are sleeved on positioning column 2, secondary protection device double torsional spring 401 with double torsional pressure line spring 3 share positioning column 2, when double torsional pressure line spring 3 is opened by external force, secondary protection device 402 still is clamped in the inside of fixed wire fitting body 1, need horizontal rotation of fixed wire fitting body 1 preset angle, can only remove the clamping of secondary protection device 402.
[0009] As a preferred technical solution of the utility model, the curvature of the double torsional pressure line spring 3 matches the curvature of the wire slot, and completely covers the wire in the wire slot.
[0010] As a preferred technical solution of the utility model, the fixed wire fitting body 1 needs to be horizontally rotated by a preset angle of 40º~80º, so that the fixed wire fitting body 1 is misaligned with the wire, and the clamping of the secondary protection device 402 can be released.
[0011] As a preferred technical solution of the utility model, the compression force generated by the double torsional pressure line spring 3 is not less than the weight of the lightning arrester body.
[0012] As a preferred technical solution of the utility model, the cross section of the wire slot is a semicircle that is adapted to the wire, and the inner wall of the wire slot is provided with anti-slip texture.
[0013] As a preferred technical solution of the utility model, the length of the positioning column 2 is consistent with the width of the fixed wire fitting body 1, and the two ends of the positioning column 2 are provided with threaded structures for locking the double torsional pressure line spring 3 through nuts.
[0014] As a preferred technical solution of the utility model, the secondary protection device 402 is an arc-shaped plate, one end of the secondary protection device 402 is connected with the secondary protection device double torsional spring, and the other end extends to the inside of the fixed wire fitting body 1 to form a clamping state protection.
[0015] As a preferred technical solution of the utility model, the material of the secondary protection device 402 is stainless steel.
[0016] As a preferred technical solution of the utility model, the double torsional pressure line spring 3 is made of 65Mn spring steel, and has a wire diameter of 4.5mm, a middle diameter of 28mm, and 3 effective turns.
[0017] Compared with the prior art, the present application has the following advantages and beneficial effects: 1. The present application is compact in space and has strong adaptability. Through the integrated design of the "double-torsion wire compression spring and secondary protection device double-torsion spring sharing the same positioning column", the specific volume of the wire fixing fitting is greatly reduced, which can adapt to the installation scene of compact space such as transformer substation and tower. At the same time, the integrated positioning structure reduces the installation steps and improves the efficiency of on-site construction.
[0018] 2. The present application has sufficient fixing pressure and strong anti-falling ability. The compression force converted by the spring force can reach 9 kg, which is much larger than the weight (6-8 kg) of the lightning arrester body (including the wire). Combined with the anti-slip texture of the inner wall of the wire slot, the loosening rate of the wire is reduced to 0 under outdoor wind load, vibration and other working conditions, completely avoiding the risk of lightning arrester body falling.
[0019] 3. The present application adopts the secondary anti-loosening design of the secondary protection device and the double-torsion spring, so that when the double-torsion wire compression spring 3 is opened by external force, the secondary protection device 402 can limit the opening of the secondary protection device double-torsion spring 401, and the wire cannot be separated. The body of the wire fixing fitting 1 needs to be horizontally rotated by 40º~80º of the preset angle to release the clamping of the secondary protection device 402, effectively avoiding accidental falling caused by human error and foreign object impact, and improving the safety protection level of the lightning protection device to IP2X (resistant to foreign object intrusion).
[0020] 4. The spring assembly of the present application adopts industry standard specifications, has strong universality, and can adapt to all overhead insulated conductors with a diameter of 10~30 mm, reducing the types of spare parts inventory and reducing maintenance costs. At the same time, the integrated structure design adopted by the present application reduces the number of vulnerable parts, which can reduce the cost of later maintenance and replacement.
[0021] 5. The present application adopts light weight and high strength metal materials, which reduces the overall weight, and the on-site installation does not require large tools, and a single person can complete the operation, further improving the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0022] The drawings described herein are used to provide further understanding of the embodiments of the present application, constitute a part of the present application, and do not constitute a limitation on the embodiments of the present application. In the drawings: Figure 1 A lightning protection device quick installation interface schematic diagram is provided for the embodiments of the present application; Figure 2 A wire fixing fitting body schematic diagram is provided for the embodiments of the present application; Figure 3 A double-torsion wire compression spring schematic diagram is provided for the embodiments of the present application; Figure 4The secondary protection device spring schematic diagram provided for the embodiment of the present application; Figure 5 The secondary protection device clamping release schematic diagram provided for the horizontal rotation wire fixing hardware body of the embodiment of the present application; Markings in the drawings and corresponding component names: 1-wire fixing hardware body, 2-positioning column, 3-double torsion wire spring, 301-double torsion wire spring one, 302-double torsion wire spring two, 4-secondary protection assembly, 401-secondary protection device double torsion spring, 402-secondary protection device, 5-side wall, 6-conductor, 7-limiting ring, 8-wire groove. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application is further described in detail below, the illustrative embodiment of the present application and its description are only used to explain the present application, and are not as the limitation to the present application.
[0024] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without these specific details. In other instances, well-known structures, materials, or methods have not been described in detail in order to avoid obscuring the present application.
[0025] In the entire description, the mention of "one embodiment", "embodiment", "one example" or "example" means that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the present application. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" appearing in various places throughout the description are not necessarily all referring to the same embodiment or example. In addition, specific features, structures or characteristics can be combined in one or more embodiments or examples in any appropriate combination and / or subcombination. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the relevant listed items.
[0026] In the description of the present application, the orientation or positional relationship indicated by the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the scope of protection of the present application. EMBODIMENT
[0027] The embodiment of the present application provides a quick installation interface of a lightning protection device, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , comprising: The fixed wire fitting body 1, the positioning column 2, the double-torsion wire pressing spring 3 and the secondary protection assembly 4 are included; the fixed wire fitting body 1 is an integrated casting structure, which is made of high-strength aluminum alloy material (tensile strength ≥ 200 MPa), and has the characteristics of light weight and corrosion resistance. The middle part of the fixed wire fitting body 1 is inwardly recessed to form a wire slot, the cross section of the wire slot is a semicircle (the radius is consistent with the outer diameter of the commonly used overhead insulated conductor, which is 10-30 mm), and the inner wall of the wire slot is provided with anti-skid texture (texture depth 0.5 mm, interval 2 mm), which is used for increasing the friction between the wire and the wire slot and improving the fixing stability. The outer side of the fixed wire fitting body 1 is provided with two side walls 5, the positioning column 2 is a cylindrical metal rod (the material is 45# steel, the surface is galvanized for rust prevention), which penetrates through the two side walls of the fixed wire fitting body in the axial direction, forming a “penetrating” structure; the diameter of the positioning column 2 is 10 mm, the length is consistent with the width of the fixed wire fitting body 1 (40 mm), and the two ends are provided with threaded structures, which are used for locking the position of the spring assembly through nuts, so as to avoid the axial movement of the components.
[0028] The double-torsion wire pressing spring 3 includes a double-torsion wire pressing spring one 301 and a double-torsion wire pressing spring two 302, the double-torsion wire pressing spring one 301 and the double-torsion wire pressing spring two 302 are respectively sleeved on the positioning column 2 of the side wall 5 on the two sides of the fixed wire fitting body 1 and are arranged in sequence along the axial direction of the positioning column (the interval is 5 mm); the double-torsion wire pressing spring one 301 and the double-torsion wire pressing spring two 302 are made of 65Mn spring steel, the wire diameter is 4.5 mm, the middle diameter is 28 mm, and the effective number of turns is 3 turns; one end of each spring is abutted against the limiting ring fixed on the side wall of the fixed wire fitting body.
[0029] The secondary protection assembly 4 includes a secondary protection device double-torsion spring 401 and a secondary protection device 402 which are sleeved on the positioning column 2; the secondary protection device double-torsion spring 401 shares the positioning column 2 with the double-torsion wire pressing spring 3; the secondary protection device double-torsion spring 401 is sleeved on the inner side of the positioning column 2, the wire diameter is 4 mm, the middle diameter is 25 mm, and the effective number of turns is 3 turns; one end of the secondary protection device double-torsion spring 401 is abutted against the side wall of the fixed wire fitting body 1, and the other end is connected with the arc-shaped secondary protection device 402; the arc-shaped secondary protection device 402 is an arc-shaped plate structure, which is made of stainless steel material; one end of the arc-shaped secondary protection device 402 is connected with the secondary protection device double-torsion spring 401, and the other end is abutted against the inner side of the fixed wire fitting body 1.
[0030] In operation, the installation and use of the quick installation interface of the application is divided into three stages of "wire fixing-secondary anti-loosening-release fixing": (1) Wire fixing stage: ① During on-site construction, first place the lightning arrester wire into the wire slot of the wire fixing fitting body 1, ensuring that the wire completely matches the anti-slip texture of the wire slot; ② The elastic force of the double-torsion wire pressing spring 1 301 and the double-torsion wire pressing spring 2 302 is directly transmitted to the wire, forming a pressing force of 9 kg, fixing the wire in the wire slot; at the same time, the secondary protection device 402 and the secondary protection device double-torsion spring 401 jointly complete the initial protection.
[0031] (2) Secondary anti-loosening stage: when the double-torsion wire pressing spring 3 is opened by irresistible external force (such as accidental touch by human, impact by foreign matter), the arc-shaped secondary protection device 402 will limit the opening angle of the two double-torsion wire pressing springs, and the wire cannot be separated from the wire slot; at this time, the lightning arrester remains in a fixed state to avoid the risk of falling off.
[0032] (3) Release fixing stage: if the lightning arrester needs to be replaced or the wire needs to be maintained, the wire fixing fitting body 1 needs to be rotated horizontally by 40º~80º, so that the secondary protection device 402 is misaligned with the wire, the double-torsion wire pressing spring is opened, and the wire can be taken out from the wire slot.
[0033] Working principle of the application: The wire fixing fitting of the application realizes the fixation of the wire through the double mechanism of "spring elastic force converted into pressing force + secondary anti-loosening". The specific principle is as follows: Generation of pressing force: the torsional elastic force of the double-torsion wire pressing spring 3 is a pressing force perpendicular to the wire axis; since two springs are used in cooperation, the pressing force converted after the elastic force is superimposed can reach 9 kg, which is much larger than the weight of the lightning arrester body; Realization of secondary anti-loosening: the elastic force of the secondary protection device double-torsion spring 402 makes the arc-shaped secondary protection device always clamped inside the wire fixing fitting; when the double-torsion wire pressing spring 3 is opened by external force, the secondary protection device 402 is still clamped inside the wire fixing fitting body 1, and the wire fixing fitting body 1 needs to be rotated horizontally by 40º~80º of the preset angle, such as Figure 5As shown, the fixed hardware body 1 is misaligned with the wire, and the secondary protection device 402 is released. In addition, due to the gap between the arc-shaped secondary protection device 402 steel sheet and the hardware inner wall, the mechanical mechanism for preventing the wire from falling depends on displacement limitation and geometric constraints. The core function of the arc-shaped steel sheet is to act as a physical barrier to precisely control the maximum movable displacement of the wire, thereby achieving secondary protection. When the double torsion compression spring 3 is accidentally opened, the wire will immediately contact the inner arc surface of the arc-shaped secondary protection device 402 after moving a very short distance upward. At this time, the arc-shaped secondary protection device 402 acts as a rigid limiting block, and its strength (not the elastic force of the secondary protection device double torsion spring 402) becomes the main factor to prevent further displacement of the wire. The falling force exerted by the wire is borne by the bending strength of the arc-shaped steel sheet itself and its connection structure with the positioning column. At the same time, since the arc-shaped steel sheet is made of stainless steel, it has very high stiffness and strength. It will convert the force to prevent falling from the elastic force of the spring to the structural strength of the steel sheet. Therefore, the restraining force provided by the arc-shaped secondary protection device double torsion spring 402 is much greater than the direct elastic force of the secondary protection device double torsion spring 402, and it can withstand huge instantaneous impact and continuous falling tendency. Therefore, the arc-shaped design of the secondary protection device 402 is the key to efficient and safe restraint, which embodies the precise control of the wire movement trajectory.
[0034] In addition, the curvature radius of the arc-shaped secondary protection device 402 matches the outer diameter of the wire, ensuring that there is only a minimum safety gap between the secondary protection device 402 and the wire when it is protected. This ensures that the wire has only a very small free movement space before being restrained when the double torsion compression spring 3 is accidentally opened, thereby avoiding dangerous shaking of the wire under vibration or impact. The arc surface secondary protection device 402 design provides maximum contact area with the outer surface of the wire. This not only disperses the stress of the wire on the steel sheet and prevents damage to the wire insulation, but also ensures uniform transmission of the restraining force, improving the reliability of the fixation.
[0035] The specifications of the double torsion compression spring 3 and the secondary protection device double torsion spring 401 of the present application adopt industry standard (wire diameter and medium diameter conform to GB / T 1239.2-2009 "Spring Compression Spring Technical Conditions"), which can adapt to all overhead insulated wires with a diameter of 10-30 mm, improving the universality of the components and reducing maintenance costs.
[0036] The quick installation interface of the lightning protection device takes the fixed wire as the core function, adopts a composite fixing mode of "double torsion spring structure + secondary protection device": two double torsion wire pressing springs, a secondary protection device and a matched double torsion spring share the same positioning column, realizing integrated arrangement of components and greatly compressing the operation space; the double torsion wire pressing spring one 301 and the double torsion wire pressing spring two 302 directly convert the elastic force into the pressing force, stably press the wire in the wire slot, and the cooperation of the two can provide a pressing force of 9 kg, and the supporting strength is sufficient to offset the weight of the lightning arrester body, effectively avoiding the risk of falling off; at the same time, the device is provided with a secondary protection assembly 4, which forms a close linkage structure with the double torsion wire pressing spring 3. When the double torsion wire pressing spring 3 is accidentally opened by irresistible external force, the secondary protection assembly 4 will be automatically clamped and locked. At this time, the lightning arrester needs to be rotated horizontally by 40º~80º to release the lock and take out the lightning arrester.
[0037] In a 10kV substation lightning arrester installation project, the lightning arrester wire (wire diameter 14mm, lightning arrester body weight 3kg) is fixed by the quick installation interface of the application, and the on-site installation process is as follows: (1) Put the wire into the wire slot, close the double torsion wire pressing spring and provide a pressing force of 9 kg, and the wire is fixed; (2) Simulate external force impact (use 5N impact force on the double torsion wire pressing spring), one end of the secondary protection device is inside the fitting, the opening angle of the double torsion wire pressing spring is only 8°, and the wire does not fall off the wire slot; (3) When the wire needs to be taken out, first, vertically downward force is applied to the wire to separate the wire from the original clamping position of the wire slot and lift it to the horizontal position above the positioning hole of the wire fitting body. The purpose of this step is to provide space for subsequent rotation operation and avoid friction interference between the wire and the inner wall of the wire slot. Secondly, keep the wire in the lifted state, and rotate the wire fitting horizontally by 40°-80°. After rotation, the wire, the wire slot and the secondary protection device form a position misalignment, thereby releasing the clamping constraint of the secondary protection device on the wire. Finally, after rotation, the wire can be smoothly slid out of the end of the secondary protection device along the arc-shaped edge of the secondary protection device, realizing safe and quick release of the clamping of the wire.
[0038] After 6 months of operation monitoring, the device has no signs of wire loosening under the working conditions of outdoor wind load (maximum wind speed 18m / s) and vibration (frequency 50Hz), the lightning arrester body remains stable and fixed, and no safety hazards occur.
[0039] The above detailed description of the specific embodiments of the present application has been given to understand the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A quick-installation interface for a lightning protection device, characterized in that, The device includes a wire fixing body (1), a positioning post (2), a double torsion spring (3), and a secondary protection component (4); the wire fixing body (1) has a wire groove in the middle; the outer side of the wire fixing body (1) has at least one sidewall (5), and the positioning post (2) is connected through the sidewall (5); one end of the double torsion spring (3) is sleeved on the positioning post (2), and the other end abuts against the limiting hole on the sidewall (5); the secondary protection component (4) includes a wire fixing body (1), a positioning post (2), a double torsion spring (3), and a secondary protection component (4). The positioning post (2) is equipped with a secondary protection device, a double torsion spring (401) and a secondary protection device (402). The secondary protection device, the double torsion spring (401), shares the positioning post (2) with the double torsion pressure spring (3). When the double torsion pressure spring (3) is opened by external force, the secondary protection device (402) is still locked inside the body of the wire fixing hardware (1). The body of the wire fixing hardware (1) needs to be rotated horizontally by a preset angle to release the locking of the secondary protection device (402).
2. The quick-installation interface for a lightning protection device according to claim 1, characterized in that, The curvature of the double torsion spring (3) matches the curvature of the wire groove and completely covers the wire inside the wire groove.
3. The quick-installation interface for a lightning protection device according to claim 1, characterized in that, The wire fixing hardware body (1) needs to be rotated horizontally by a preset angle of 40º~80º to make the wire fixing hardware body (1) misaligned with the wire, so that the secondary protection device (402) can be released.
4. The quick-installation interface for a lightning protection device according to claim 1, characterized in that, The clamping force generated by the double torsion spring (3) is not less than the weight of the arrester body.
5. The quick-installation interface for a lightning protection device according to claim 1, characterized in that, The cross-section of the wire groove is a semi-circle adapted to the wire, and the inner wall of the wire groove is provided with anti-slip texture.
6. The quick-installation interface for a lightning protection device according to claim 1, characterized in that, The length of the positioning post (2) is the same as the width of the wire fixing body (1). The two ends of the positioning post (2) are provided with threaded structures, which are used to lock the double torsion wire spring (3) by means of a nut.
7. The quick-installation interface for a lightning protection device according to claim 1, characterized in that, The secondary protection device (402) is an arc-shaped plate. One end of the secondary protection device (402) is connected to the double torsion spring (401) of the secondary protection device, and the other end extends to the inner side of the fixed wire fitting body (1) to form a snap-fit protection.
8. The quick-installation interface for a lightning protection device according to claim 4, characterized in that, The effective number of turns of the double torsion spring (3) and the double torsion spring (401) of the secondary protection device is 3 turns.
9. The quick-installation interface for a lightning protection device according to claim 7, characterized in that, The secondary protection device (402) is made of stainless steel.
10. The quick-installation interface for a lightning protection device according to claim 8, characterized in that, The double torsion spring (3) and the double torsion spring (401) of the secondary protection device are made of 65Mn spring steel with a wire diameter of 4.5mm and a mean diameter of 28mm.