Low-voltage cabinet with elastic winding structure and assembling method of low-voltage cabinet

Abstract

The invention discloses a low-voltage cabinet with an elastic winding structure and an assembling method of the low-voltage cabinet, and belongs to the field of power distribution cabinets, the low-voltage cabinet comprises a cabinet body assembly, a frame assembly, an electrical assembly and an elastic winding assembly, the elastic winding assembly is a core innovative structure and is composed of a mounting frame, a supporting rod, a spring, a connecting rod, a telescopic rod and a baffle, through the elastic deformation of the spring and the telescopic cooperation of the telescopic rod, the elastic take-up and pay-off and buffer protection of the cable are realized, and the problems of cable stress concentration, abrasion, inconvenient maintenance and the like caused by traditional fixed winding are solved. The assembling method adopts modular design, completes assembling and debugging of each component in sequence, is suitable for various power distribution scenes, and has the advantages of high stability, high safety, convenience in maintenance and the like.

Description

Technical Field

[0001] This invention belongs to the field of power distribution cabinets, specifically relating to a low-voltage cabinet with an elastic winding structure and its assembly method. Background Technology

[0002] Low-voltage switchgear, as the core equipment for power distribution, circuit control, and safety protection in power systems, is widely used in various scenarios such as industrial production, commercial buildings, and public facilities. Its performance directly affects the stable operation of the power system and the safety of electricity use. With the increasing demands for reliability and flexibility in power supply in modern society, the structural design and functional optimization of low-voltage switchgear have become important directions for industry development. Among these, the rationality of the internal wiring system is one of the key factors affecting the overall performance of the equipment.

[0003] Traditional low-voltage switchgear typically employs a fixed cable routing design, where cables are rigidly confined within the cabinet using cable ties, cable trays, or fixed brackets, resulting in a fixed cable path and length. While this design achieves basic cable management, it has significant limitations: when the switchgear encounters environmental temperature changes during operation, the cables will expand and contract due to thermal expansion, and the fixed constraint prevents the cables from freely extending and contracting, leading to continuous stress inside. Under long-term stress, the cable insulation layer is prone to aging and cracking, and the copper core conductor may also fracture due to fatigue, especially at weak points such as joints, where the risk of such failures is higher, potentially causing short circuits, power outages, and other safety accidents.

[0004] Furthermore, fixed cable routing increases the difficulty of equipment installation and maintenance. During the installation and commissioning phase of the low-voltage switchgear, fixed cabling requires precise matching of cable lengths. Any discrepancy necessitates recutting or splicing, reducing assembly efficiency. In later maintenance or line modifications, fixed cables are difficult to disassemble, adjust, or replace quickly, extending maintenance time and potentially causing secondary damage to other cables during operation. Simultaneously, traditional cable routing lacks buffer protection for the cables; accidental pulling during maintenance can easily lead to direct cable damage, further impacting equipment lifespan and operational safety.

[0005] Therefore, developing a winding structure with flexible adjustment capabilities has become an urgent need to solve the defects of traditional low-voltage cabinet wiring. Summary of the Invention

[0006] To address one or more of the above-mentioned defects or improvement needs in the existing technology, this invention provides a low-voltage switchgear with an elastic winding structure and its assembly method. Through the synergistic action of the spring and the telescopic rod in the elastic winding assembly, it achieves elastic winding and buffering protection for the cable. When the cable is pulled by external force or expands or contracts due to temperature changes, the elastic deformation of the spring can offset part of the stress, and the extension and retraction adjustment of the telescopic rod can adapt to changes in cable length, effectively reducing the risks of cable insulation aging and copper core breakage, significantly improving the operational stability of the low-voltage switchgear, and possessing high practical value and promotional significance.

[0007] To achieve the above objectives, the present invention provides a low-voltage switchgear with a flexible winding structure, comprising a cabinet assembly, a frame assembly, an electrical assembly, and a flexible winding assembly; the frame assembly is fixed inside the cabinet assembly, the electrical assembly is mounted on the front side of the frame assembly, the flexible winding assembly mounting bracket is fixedly connected to the back plate of the frame assembly, and the flexible winding assembly is connected to the electrical assembly via a cable; the electrical assembly includes a main circuit breaker, a sub-circuit breaker, a copper busbar fixing clip, electronic components, a mounting base, a guide rail, and a busbar, wherein the mounting base is fixed to the base plate of the frame assembly, the guide rail is fixed to the mounting base, and the main circuit breaker, the sub-circuit breaker, and the electronic components are all mounted on the frame assembly. On the guide rail, the busbar is fixed to the bracket of the frame assembly via the copper busbar fixing clamp and connected to the main circuit breaker and the sub-circuit breaker; the elastic winding assembly includes a mounting frame, a support rod, a spring, a connecting rod, a telescopic rod, and a baffle, wherein the mounting frame is fixed to the back plate of the frame assembly, one end of the support rod is hinged to the mounting frame, and the other end is connected to the connecting rod, one end of the telescopic rod is inserted into the connecting rod and can extend and retract relative to the connecting rod, the spring is sleeved on the outside of the telescopic rod and its two ends abut against the connecting rod and the baffle respectively, and the baffle is fixed to the end of the telescopic rod away from the connecting rod; through the elastic deformation of the spring and the extension and retraction of the telescopic rod, the elastic winding and buffering of the cable is realized.

[0008] As a further improvement of the present invention, the cabinet assembly includes a protective panel and a cabinet door; the protective panels enclose a cavity structure, and adjacent protective panels are connected and fixed; one side of the cabinet door is hinged to the protective panel, and can be opened and closed relative to the protective panel, and when closed, it fits against the protective panel.

[0009] As a further improvement of the present invention, the frame assembly includes a base plate, a top plate, a support, and a perforated layer; the base plate and the top plate are arranged parallel to each other and spaced apart, and the support is connected between the base plate and the top plate to form the frame body; the perforated layer is fixed to the middle of the support and is parallel to the base plate and the top plate.

[0010] As a further improvement of the present invention, a limiting structure is provided at the hinge joint between the support rod and the mounting frame in the elastic winding assembly to limit the rotation angle of the support rod and prevent the support rod from rotating excessively and damaging the elastic winding assembly or affecting the normal winding and unwinding of the cable.

[0011] As a further improvement of the present invention, the connection points between the busbar and the main circuit breaker and the sub-circuit breaker are provided with conductive connectors.

[0012] As a further improvement of the present invention, a grounding component is provided on the inner side of the cabinet assembly, which is connected to the frame assembly to provide grounding protection for the entire low-voltage cabinet.

[0013] As a further improvement of the present invention, the frame assembly further includes reinforcing ribs connected at the connection points between the bracket and the base plate and the top plate, thereby enhancing the structural strength of the frame assembly.

[0014] As a further improvement of the present invention, the guide rail is provided with elastic buckles, and the main circuit breaker, sub-circuit breaker and electronic components are fastened to the guide rail by the elastic buckles, which facilitates installation and disassembly, while ensuring that each component is installed securely.

[0015] As a further improvement of the present invention, the spring in the elastic winding assembly is a compression spring to ensure that the cable is provided with appropriate buffering force and elastic winding and unwinding capability.

[0016] Based on this, the present invention also provides an assembly method for a low-voltage switchgear with a flexible winding structure. This method, based on the aforementioned low-voltage switchgear, includes the following steps: connecting and fixing the base plate and the top plate via the bracket; installing the perforated layer and the reinforcing ribs; enclosing and fixing the protective plate; connecting the cabinet door; fixing the mounting base and the guide rail on the frame assembly; sequentially installing and connecting the main circuit breaker, the sub-circuit breaker, the busbar, and the electronic components; fixing the mounting bracket to the frame assembly; sequentially connecting the support rod, the connecting rod, and the telescopic rod; sleeved with the spring and installing the baffle; inserting the frame assembly into the cabinet assembly; connecting the electrical components and the cables of the flexible winding assembly; and performing functional debugging.

[0017] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: (1) The low-voltage switchgear with elastic winding structure and its assembly method of the present invention achieves elastic winding and buffer protection of cables through the synergistic effect of spring and telescopic rod in the elastic winding assembly. When the cable is pulled by external force or expands or contracts due to temperature changes, the elastic deformation of the spring can offset part of the stress, and the telescopic rod can adapt to the changes in cable length, effectively reducing the risks of cable insulation aging, copper core breakage, etc., and significantly improving the stability of low-voltage switchgear operation.

[0019] (2) The low-voltage switchgear with elastic winding structure and its assembly method of the present invention enhance the overall synergistic performance: each component forms an organic whole through reasonable connection relationship. The precise cooperation between the elastic winding component and the electrical component not only meets the electrical performance requirements of power transmission, but also solves the inherent defects of traditional fixed winding. At the same time, the detailed design of grounding components, conductive connectors and other details further improves the power safety and power transmission efficiency of the equipment. The overall structure has high practical value and promotion significance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the low-voltage switchgear with the elastic winding structure in an embodiment of the present invention; Figure 2 This is a partial structural diagram of the framework components; Figure 3 This is a schematic diagram showing the arrangement of electrical components; Figure 4 This is a schematic diagram showing the connection between the flexible winding assembly and the frame assembly. Figure 5 This is a partial cross-sectional view of the flexible winding assembly.

[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100. Cabinet components; 101. Protective panels; 102. Cabinet doors; 200. Frame component; 201. Base plate; 202. Top plate; 203. Support frame; 204. Perforated layer; 300. Electrical components; 301. Main circuit breaker; 302. Copper busbar fixing clips; 303. Circuit breaker; 304. Electronic components; 305. Mounting base; 306. Guide rail; 307. Busbar; 308. Backplate; 400. Flexible winding assembly; 401. Mounting bracket; 402. Support rod; 403. Spring; 404. Connecting rod; 405. Telescopic rod; 406. Baffle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the technical features involved in the various embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please see Figures 1-5 The low-voltage switchgear with elastic winding structure in the preferred embodiment of the present invention achieves elastic winding and buffer protection of the cable through the synergistic effect of the spring and telescopic rod in the elastic winding assembly. When the cable is pulled by external force or expands or contracts due to temperature changes, the elastic deformation of the spring can offset part of the stress, and the extension and retraction adjustment of the telescopic rod can adapt to the changes in cable length, effectively reducing the risks of cable insulation aging, copper core breakage, etc.

[0025] Specifically, the low-voltage switchgear in the preferred embodiment of the present invention includes four core components: a cabinet assembly 100, a frame assembly 200, an electrical assembly 300, and a flexible winding assembly 400. The frame assembly 200 serves as the load-bearing foundation and is fixed inside the cabinet assembly 100. The electrical assembly 300 is modularly installed on the front of the frame assembly 200 to achieve power distribution and control functions. The flexible winding assembly 400 is fixed on the rear of the frame assembly 200 and connected to the electrical assembly 300 via cables. Its core innovation lies in achieving flexible cable retraction and buffer protection through the synergistic action of springs and telescopic rods, solving the stress concentration problem of traditional fixed winding.

[0026] More specifically, the cabinet assembly 100 is the outer protective structure of the low-voltage switchgear, including a protective plate 101 and a cabinet door 102: the protective plate 101 is formed by five rectangular steel plates enclosing a cuboid cavity (without a top or bottom, depending on the installation scenario). The edges of adjacent protective plates 101 are fully welded together, and the welds are ground and then sprayed with an epoxy resin insulation layer to ensure both structural strength and improved insulation safety; the internal dimensions of the enclosed cavity are adapted to the frame assembly 200, with a certain gap between them for heat dissipation; the cabinet door 102 is made of the same steel plate as the protective plate 101, with one edge connected by four evenly spaced... The stainless steel hinges of the fabric are hinged to the side panels of the protective plate 101. The fixed end of the hinge is fastened to the protective plate 101 by bolts, and the movable end is connected to the cabinet door 102 by bolts, ensuring that the cabinet door 102 can be opened and closed flexibly. When the cabinet door 102 is closed, its edge is tightly fitted with the front edge of the protective plate 101, and a ring of nitrile rubber sealing strip is pasted on the fitted surface to improve the dustproof and moisture-proof performance of the cabinet. At the same time, a copper grounding terminal is welded to the inner side of the protective plate 101 near the bottom. The terminal is connected to the bracket 203 of the frame assembly 200 through a yellow-green bicolor grounding wire to provide grounding protection for the entire low-voltage cabinet.

[0027] Complementing this is the frame assembly 200, which serves as the internal support structure to support the electrical assembly 300 and the flexible winding assembly 400. It includes a base plate 201, a top plate 202, a bracket 203, a perforated layer 204, and reinforcing ribs. The base plate 201 and top plate 202 are both rectangular steel plates, parallel and spaced apart (the spacing is designed according to the cabinet height), serving as the upper and lower load-bearing surfaces of the frame. The bracket 203 consists of four rectangular steel columns (or square tubes), vertically welded to the four corners of the base plate 201 and top plate 202 to form the main frame structure. The bracket 203 and the base plate 202... The welded joints of plate 201 and top plate 202 are reinforced with fillet welds to ensure the stability of the overall structure; the reinforcing ribs are L-shaped angle steels, welded at the connection between bracket 203 and bottom plate 201 and top plate 202 (at least one reinforcing rib at each connection point), further enhancing the structural strength of frame component 200; the hollow layer 204 is a grid-shaped steel plate, horizontally fixed in the middle of the four brackets 203, parallel to bottom plate 201 and top plate 202. It can not only help support some lightweight electronic components 304, but also enhance the air circulation inside the cabinet and improve heat dissipation efficiency.

[0028] Electrical component 300 is the core component for realizing the power distribution and control functions of the low-voltage switchgear. It includes a main circuit breaker 301, a sub-circuit breaker 303, a copper busbar fixing clamp 302, electronic components 304, a mounting base 305, guide rails 306, and busbars 307. The mounting base 305 is a rectangular steel plate, which is fixed to the upper surface of the base plate 201 of the frame component 200 by expansion bolts. It needs to be calibrated with a level during installation to provide a flat reference for the installation of subsequent components. The guide rails 306 are two parallel C-shaped cold-drawn steel rails. The guide rail is fixed along the length of the mounting base 305 by T-bolts. The slots of the guide rail 306 are arranged opposite each other, and the slots are equipped with elastic clips (made of spring steel). The main circuit breaker 301, the sub-circuit breaker 303, and the electronic components 304 are secured to the guide rail 306 by the elastic clips, facilitating installation and disassembly while ensuring the secure installation of each component. The main circuit breaker 301 is a molded case circuit breaker and is installed at one end of the guide rail 306. The sub-circuit breaker 303 is a miniature circuit breaker, and the number is determined according to actual needs. The circuit breakers are mounted side-by-side in the middle of the guide rail 306, with a certain gap reserved between adjacent sub-circuit breakers 303 to avoid mutual interference during operation. The busbar 307 uses a flat copper busbar as the main line for power transmission. It is fixed to the bracket 203 of the frame assembly 200 via copper busbar fixing clips 302. The copper busbar fixing clips 302 are made of insulating nylon, and are connected to the bracket 203 at the bottom by bolts. The middle part has a groove that matches the busbar 307, which both fixes the busbar 307 and provides insulation. The input terminal of busbar 307 is connected to the output terminal of main circuit breaker 301, and the output terminal is connected to the input terminal of each sub-circuit breaker 303 through branch copper busbars. Conductive connectors are provided at the connection points to enhance the conductivity and stability of the connection points. Electronic components 304 include relays, contactors, multi-function meters, etc., which are all snapped onto the end of guide rail 306 away from main circuit breaker 301 by bottom clips, and connected to the output terminal of sub-circuit breaker 303 through wires to realize refined control and parameter monitoring of the circuit.

[0029] As the core innovative component of this invention, the elastic winding assembly 400 is used to realize the elastic winding and buffering of the cable. It includes a mounting frame 401, a support rod 402, a spring 403, a connecting rod 404, a telescopic rod 405, and a baffle 406. The mounting frame 401 is an L-shaped steel plate, its vertical surface is fastened to the back plate 308 of the frame assembly 200 by bolts, and its horizontal surface serves as the installation reference for the support rod 402. One end of the support rod 402 is hinged to the horizontal surface of the mounting frame 401 via a deep groove ball bearing—the inner ring of the bearing has an interference fit with the support rod 402, and the outer ring has a clearance fit with the mounting frame 401, ensuring that the support rod 402 can rotate flexibly. A limiting structure is provided at the hinge to limit the rotation angle of the support rod 402, preventing excessive rotation of the support rod 402 from damaging the elastic winding assembly 400 or affecting the normal winding and unwinding of the cable. The connecting rod... 404 is a hollow steel pipe, one end of which is connected to the other end of the support rod 402. A telescopic rod 405 is fitted inside the other end. The telescopic rod 405 is a stepped stainless steel rod that can slide freely along the axial direction of the connecting rod 404. A spring 403 is a compression spring, fitted on the outside of the telescopic rod 405. One end of the spring abuts against the end face of the connecting rod 404, and the other end abuts against the baffle 406. It provides buffering force through its own elastic deformation. Its elastic coefficient is selected according to the tensile force range borne by the cable to ensure appropriate buffering force and elastic extension / retraction capability for the cable. The baffle 406 is a circular insulating rubber plate, welded and fixed to the center of the telescopic rod 405 away from the connecting rod 404. An annular groove is provided on its surface to accommodate and fix the cable, preventing cable slippage and wear, and evenly transmitting the elastic force of the spring 403 to the cable. Through the elastic deformation of the spring 403 and the extension / retraction of the telescopic rod 405, the elastic extension / retraction and buffering of the cable are achieved.

[0030] Based on the above-mentioned low-voltage switchgear structure, the present invention also provides a corresponding assembly method, the specific steps of which are as follows: First, assemble the frame assembly 200, connect and fix the bottom plate 201 and the top plate 202 through the bracket 203, and install the perforated layer 204 and reinforcing ribs to ensure the stability of the frame structure; next, assemble the cabinet assembly 100, enclose and fix the protective plate 101, and connect the cabinet door 102 to ensure the protective performance of the cabinet; then, install the electrical assembly 300, fix and install the base 305 and the guide rail 306 on the frame assembly 200, and install the main circuit breaker 30 in sequence. 1. Connect the sub-circuit breaker 303, busbar 307, and electronic components 304 to ensure reliable electrical connections. Then, assemble the flexible winding assembly 400, fix the mounting bracket 401 to the frame assembly 200, connect the support rod 402, connecting rod 404, and telescopic rod 405 in sequence, install the spring 403 and the baffle 406, and test the flexibility of the flexible components. Finally, install the frame assembly 200 into the cabinet assembly 100, connect the cables of the electrical components 300 and the flexible winding assembly 400, and perform functional debugging to ensure that the entire low-voltage cabinet operates normally.

[0031] (1) The low-voltage switchgear with elastic winding structure and its assembly method of the present invention achieves elastic winding and buffer protection of cables through the synergistic effect of spring and telescopic rod in the elastic winding assembly. When the cable is pulled by external force or expands or contracts due to temperature changes, the elastic deformation of the spring can offset part of the stress, and the telescopic rod can adapt to the changes in cable length, effectively reducing the risks of cable insulation aging, copper core breakage, etc., and significantly improving the stability of low-voltage switchgear operation.

[0032] (2) The low-voltage switchgear with elastic winding structure and its assembly method of the present invention enhance the overall synergistic performance: each component forms an organic whole through reasonable connection relationship. The precise cooperation between the elastic winding component and the electrical component not only meets the electrical performance requirements of power transmission, but also solves the inherent defects of traditional fixed winding. At the same time, the detailed design of grounding components, conductive connectors and other details further improves the power safety and power transmission efficiency of the equipment. The overall structure has high practical value and promotion significance.

[0033] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A low-voltage switchgear with an elastic winding structure, characterized in that, Includes cabinet assembly (100), frame assembly (200), electrical assembly (300) and flexible winding assembly (400); The frame assembly (200) is fixed inside the cabinet assembly (100), the electrical assembly (300) is installed on the front side of the frame assembly (200), the flexible winding assembly (400) mounting bracket (401) is fixedly connected to the back plate (308) of the frame assembly (200), and the flexible winding assembly (400) is connected to the electrical assembly (300) via a cable; The electrical assembly (300) includes a main circuit breaker (301), a sub-circuit breaker (303), a copper busbar fixing clip (302), electronic components (304), a mounting base (305), a guide rail (306), and a busbar (307). The mounting base (305) is fixed to the base plate (201) of the frame assembly (200), the guide rail (306) is fixed to the mounting base (305), the main circuit breaker (301), the sub-circuit breaker (303), and the electronic components (304) are all mounted on the guide rail (306), and the busbar (307) is fixed to the bracket (203) of the frame assembly (200) through the copper busbar fixing clip (302) and connected to the main circuit breaker (301) and the sub-circuit breaker (303). The elastic winding assembly (400) includes a mounting bracket (401), a support rod (402), a spring (403), a connecting rod (404), a telescopic rod (405), and a baffle (406). The mounting bracket (401) is fixed to the back plate (308) of the frame assembly (200). One end of the support rod (402) is hinged to the mounting bracket (401), and the other end is connected to the connecting rod (404). One end of the telescopic rod (405) is inserted into the... The connecting rod (404) can extend and retract relative to the connecting rod (404). The spring (403) is sleeved on the outside of the telescopic rod (405) and its two ends abut against the connecting rod (404) and the baffle (406) respectively. The baffle (406) is fixed to the end of the telescopic rod (405) away from the connecting rod (404). Through the elastic deformation of the spring (403) and the extension and retraction of the telescopic rod (405), the elastic extension and retraction and buffering of the cable are realized.

2. The low-voltage switchgear with an elastic winding structure according to claim 1, wherein, The cabinet assembly (100) includes a protective panel (101) and a cabinet door (102); the protective panels (101) enclose to form a cavity structure, and adjacent protective panels (101) are connected and fixed; one side of the cabinet door (102) is hinged to the protective panel (101), and can be opened and closed relative to the protective panel (101), and when closed, it fits against the protective panel (101).

3. The low-voltage switchgear with an elastic winding structure according to claim 2, wherein, The frame assembly (200) includes a base plate (201), a top plate (202), a support (203), and a perforated layer (204); the base plate (201) and the top plate (202) are arranged parallel to each other and spaced apart, and the support (203) is connected between the base plate (201) and the top plate (202) to form the main frame body; the perforated layer (204) is fixed in the middle of the support (203) and is parallel to the base plate (201) and the top plate (202).

4. The low-voltage switchgear with an elastic winding structure according to claim 1, wherein, The support rod (402) in the elastic winding assembly (400) is provided with a limiting structure at the hinge of the mounting bracket (401) to limit the rotation angle of the support rod (402) and prevent the support rod (402) from rotating excessively and damaging the elastic winding assembly (400) or affecting the normal winding and unwinding of the cable.

5. The low-voltage switchgear with an elastic winding structure according to claim 1, wherein, The connection points between the busbar (307) and the main circuit breaker (301) and the sub-circuit breaker (303) are provided with conductive connectors.

6. The low-voltage switchgear with an elastic winding structure according to claim 1, wherein, The cabinet assembly (100) has a grounding component on its inner side, which is connected to the frame assembly (200) to provide grounding protection for the entire low-voltage cabinet.

7. The low-voltage switchgear with an elastic winding structure according to claim 3, wherein, The frame assembly (200) also includes reinforcing ribs, which are connected at the connection points between the bracket (203) and the base plate (201) and the top plate (202) to enhance the structural strength of the frame assembly (200).

8. The low-voltage switchgear with an elastic winding structure according to claim 7, wherein, The guide rail (306) is provided with elastic buckles, and the main circuit breaker (301), the sub-circuit breaker (303) and the electronic components (304) are fastened to the guide rail (306) by means of the elastic buckles, which facilitates installation and disassembly.

9. The low-voltage switchgear with an elastic winding structure according to claim 7, wherein, The spring (403) in the elastic winding assembly (400) is a compression spring to ensure that the cable is provided with appropriate buffering force and elastic winding and unwinding capability.

10. A method for assembling a low-voltage switchgear with an elastic winding structure, characterized in that, This method is based on the low-voltage switchgear described in claim 7, and includes the following steps: The bottom plate (201) and the top plate (202) are connected and fixed by the bracket (203), and the hollow layer (204) and the reinforcing rib are installed; the protective plate (101) is enclosed and fixed, and the cabinet door (102) is connected. The mounting base (305) and the guide rail (306) are fixed on the frame assembly (200), and the main circuit breaker (301), the sub-circuit breaker (303), the busbar (307), and the electronic components (304) are installed and connected in sequence. The mounting bracket (401) is fixed to the frame assembly (200), and the support rod (402), the connecting rod (404), and the telescopic rod (405) are connected in sequence. The spring (403) is sleeved and the baffle (406) is installed. The frame assembly (200) is installed into the cabinet assembly (100), and the cables connecting the electrical assembly (300) and the flexible winding assembly (400) are connected for functional testing.

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