Low voltage switchgear with elastic winding structure and method for assembling the same

Abstract

The application discloses a low-voltage cabinet with an elastic winding structure and an assembling method thereof, 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, wherein the elastic winding assembly is a core innovative structure and is composed of a mounting frame, a supporting rod, a spring, a connecting rod, an extension rod and a baffle.By the elastic deformation of the spring and the extension and retraction cooperation of the extension rod, elastic winding and buffering protection of the cable are realized, and the problems of cable stress concentration, abrasion and inconvenient maintenance caused by traditional fixed winding are solved.The assembling method adopts modular design, and the assembly and debugging of each component are sequentially completed, and the method is suitable for various power distribution scenes and has the advantages of high stability, high safety, convenient maintenance and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of power distribution cabinets, and particularly relates to a low-voltage cabinet with an elastic winding structure and an assembling method thereof. BACKGROUND

[0002] As the core equipment for power distribution, circuit control and safety protection in the power system, the low-voltage cabinet is widely used in various scenes such as industrial production, commercial buildings and public facilities, and its performance is directly related to the stable operation of the power system and the safety of power use. With the increasing requirements of modern society for the reliability and flexibility of power supply, the structural design and functional optimization of the low-voltage cabinet have become an important direction for the development of the industry, and the rationality of the internal wiring system is one of the key factors affecting the overall performance of the equipment.

[0003] The traditional winding method of the low-voltage cabinet generally adopts a fixed wiring design, that is, the cable is rigidly constrained inside the cabinet body through a strap, a wire slot or a fixed support, and the wiring path and length are fixed and unchangeable. Although this design can achieve the basic cable arrangement function, it has significant limitations: when the low-voltage cabinet encounters changes in environmental temperature during operation, the cable will change in length due to thermal expansion and contraction, and the fixed constraint will prevent the cable from freely expanding and contracting, thereby forming a continuous stress inside. Under the action of long-term stress, the insulating layer of the cable is prone to aging and cracking, and the copper conductor may also break due to fatigue, especially at weak parts such as joints, where the risk of such faults is higher, and serious accidents such as short circuits and power outages may occur.

[0004] In addition, the fixed winding method also increases the difficulty of equipment installation and maintenance. During the installation and debugging of the low-voltage cabinet, the fixed wiring needs to be accurately matched with the cable length, and once an error occurs, it needs to be re-cut or connected, which reduces the assembly efficiency; during the later maintenance or line modification, the fixedly constrained cable is difficult to quickly disassemble, adjust or replace, which not only prolongs the maintenance time, but also may cause secondary damage to other cables during the operation process. At the same time, the traditional winding structure lacks buffer protection for the cable, and if accidental pulling occurs during maintenance, the cable is likely to be directly damaged, further affecting the service life and operational safety of the equipment.

[0005] Therefore, it is an urgent need to develop a winding structure with elastic adjustment capability to solve the wiring defects of traditional low-voltage cabinets. SUMMARY

[0006] In view of one or more of the above defects or improvement needs of the prior art, the present application provides a low-voltage cabinet with an elastic winding structure and an assembling method thereof, which realizes elastic winding and buffering of the cable through the cooperation of the spring and the telescopic rod in the elastic winding assembly, so that when the cable is pulled by external force or expands due to temperature change, the elastic deformation of the spring can offset part of the stress, and the telescopic adjustment of the telescopic rod can adapt to the length change of the cable, effectively reducing the risks of cable insulation layer aging, copper core fracture and the like, and significantly improving the stability of the low-voltage cabinet operation, having high practical value and popularization significance.

[0007] To achieve the above-mentioned purpose, the present application provides a low-voltage cabinet with an elastic winding structure, which comprises a cabinet assembly, a frame assembly, an electrical assembly and an elastic winding assembly; the frame assembly is fixed inside the cabinet assembly, the electrical assembly is installed on the front side of the frame assembly, the mounting rack of the elastic winding assembly is fixedly connected with the back plate of the frame assembly, and the elastic winding assembly is connected with the electrical assembly through a cable; the electrical assembly comprises a main circuit breaker, a sub-circuit breaker, a copper bar fixing clamp, electronic components, a mounting base, a guide rail and a busbar, wherein the mounting base is fixed on the bottom plate of the frame assembly, the guide rail is fixed on the mounting base, the main circuit breaker, the sub-circuit breaker and the electronic components are all installed on the guide rail, and the busbar is fixed on the support of the frame assembly through the copper bar fixing clamp and connected with the main circuit breaker and the sub-circuit breaker; the elastic winding assembly comprises a mounting rack, a support rod, a spring, a connecting rod, a telescopic rod and a baffle, wherein the mounting rack is fixed to the back plate of the frame assembly, one end of the support rod is hinged to the mounting rack, the other end is connected to the connecting rod, one end of the telescopic rod is inserted into the connecting rod and can be telescopically adjusted relative to the connecting rod, the spring is sleeved outside the telescopic rod and abuts against the connecting rod and the baffle at both ends, 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 telescopic cooperation of the telescopic rod, the elastic winding and buffering of the cable are realized.

[0008] As a further improvement of the present application, the cabinet assembly comprises a protection plate and a cabinet door; the protection plate forms a cavity structure by being enclosed, and adjacent protection plates are fixedly connected; one side of the cabinet door is hinged to the protection plate and can be opened and closed relative to the protection plate, and when closed, the cabinet door is attached to the protection plate.

[0009] As a further improvement of the present application, the frame assembly comprises a bottom plate, a top plate, a support and a hollow layer; the bottom plate and the top plate are arranged in parallel and spaced apart, the support is connected between the bottom plate and the top plate to form a frame body; the hollow layer is fixed to the middle part of the support and is parallel to the bottom plate and the top plate.

[0010] As a further improvement of the application, a limiting structure is arranged at the hinge between the supporting rod and the mounting rack in the elastic winding assembly, so as to limit the rotation angle of the supporting rod, and avoid damage to the elastic winding assembly or influence on the normal winding and unwinding of the cable caused by excessive rotation of the supporting rod.

[0011] As a further improvement of the application, a conductive connecting piece is arranged at the connecting position of the bus bar and the main circuit breaker and the sub-circuit breaker.

[0012] As a further improvement of the application, a grounding component is arranged inside the cabinet body assembly, and is connected with the frame assembly, so as to provide grounding protection for the entire low-voltage cabinet.

[0013] As a further improvement of the application, the frame assembly further comprises a reinforcing rib, which is connected to the connecting position of the support and the bottom plate and the top plate, so as to enhance the structural strength of the frame assembly.

[0014] As a further improvement of the application, an elastic buckle is arranged on the guide rail, and the main circuit breaker, the sub-circuit breaker and the electronic component are clamped on the guide rail through the elastic buckle, so as to facilitate installation and disassembly, and ensure stable installation of each component.

[0015] As a further improvement of the application, the spring in the elastic winding assembly is a compression spring, so as to ensure that appropriate buffering force and elastic winding and unwinding capacity are provided for the cable.

[0016] On the basis of the above, the application further provides an assembling method of the low-voltage cabinet with the elastic winding structure, which is realized based on the above low-voltage cabinet, and comprises the following steps: connecting and fixing the bottom plate and the top plate through the support, installing the hollow layer and the reinforcing rib; enclosing and fixing the protective plate, connecting the cabinet door; fixing the mounting base and the guide rail on the frame assembly, and sequentially installing and connecting the main circuit breaker, the sub-circuit breaker, the bus bar and the electronic component; fixing the mounting rack on the frame assembly, sequentially connecting the supporting rod, the connecting rod and the telescopic rod, sleeving the spring and installing the baffle; assembling the frame assembly into the cabinet body assembly, connecting the cable of the electrical assembly and the elastic winding assembly, and performing function debugging.

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

[0018] Overall, compared with the prior art, the above technical solutions conceived by the application have the following beneficial effects:

[0019] (1) The low-voltage cabinet with the elastic winding structure and the assembling method thereof, through the cooperation of the spring and the telescopic rod in the elastic winding assembly, realize the elastic winding and buffering protection of the cable. When the cable is pulled by external force or expands due to temperature change, the elastic deformation of the spring can offset part of the stress, and the telescopic adjustment of the telescopic rod can adapt to the length change of the cable, effectively reducing the risks of cable insulation layer aging, copper core fracture and the like, and significantly improving the stability of the low-voltage cabinet operation.

[0020] (2) The low-voltage cabinet with the elastic winding structure and the assembling method thereof, through the strengthening of the overall synergy performance: each component forms an organic whole through reasonable connection relationship, and the precise matching of the elastic winding assembly and the electrical assembly not only meets the electrical performance requirements of power transmission, but also solves the inherent defects of the traditional fixed winding; at the same time, the details design of the grounding part, the conductive connecting piece and the like further improves the power safety and power transmission efficiency of the equipment, and the overall structure has high practical value and popularization significance. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the low-voltage cabinet with the elastic winding structure in the embodiment of the application.

[0022] Figure 2 It is a schematic diagram of the local structure of the frame assembly.

[0023] Figure 3 It is a schematic diagram of the arrangement of the electrical assembly.

[0024] Figure 4 It is a schematic diagram of the connection of the elastic winding assembly and the frame assembly.

[0025] Figure 5 It is a local sectional view of the elastic winding assembly.

[0026] In all the drawings, the same reference signs represent the same technical features, specifically:

[0027] 100, cabinet assembly; 101, protection plate; 102, cabinet door;

[0028] 200, frame assembly; 201, bottom plate; 202, top plate; 203, support; 204, hollow layer;

[0029] 300, electrical assembly; 301, main circuit breaker; 302, copper bar fixing clamp; 303, circuit breaker; 304, electronic element; 305, mounting base; 306, guide rail; 307, busbar; 308, back plate;

[0030] 400, elastic winding assembly; 401, mounting frame; 402, support rod; 403, spring; 404, connecting rod; 405, telescopic rod; 406, baffle. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0033] Please refer to Figures 1-5 The low-voltage cabinet with the elastic winding structure in the preferred embodiment of the present application realizes elastic winding and buffering protection of the cable through the synergistic effect of the spring and the telescopic rod in the elastic winding assembly. When the cable is pulled by external force or expands due to temperature change, the elastic deformation of the spring can offset part of the stress, and the telescopic adjustment of the telescopic rod can adapt to the length change of the cable, effectively reducing the risks of cable insulation layer aging, copper core fracture and the like.

[0034] Specifically, the low-voltage cabinet in the preferred embodiment of the present application includes four core parts of a cabinet assembly 100, a frame assembly 200, an electrical assembly 300 and an elastic winding assembly 400. Among them, the frame assembly 200 is fixed inside the cabinet assembly 100 as a bearing base, the electrical assembly 300 is modularly installed on the front side of the frame assembly 200 to realize the function of power distribution and control, and the elastic winding assembly 400 is fixed on the rear side of the frame assembly 200 and connected with the electrical assembly 300 through the cable. The core innovation is to realize the elastic winding and buffering protection of the cable through the synergistic effect of the spring and the telescopic rod, and solve the stress concentration problem of the traditional fixed winding.

[0035] In more detail, the cabinet body assembly 100 is a low-voltage cabinet outer shell protection structure, including a protection plate 101 and a cabinet door 102: the protection plate 101 is formed by enclosing five rectangular steel plates to form a cuboid cavity (without top or bottom, selected according to the installation scene), the edges of adjacent protection plates 101 are connected by full welding, and the weld is polished and then sprayed with an epoxy resin insulation layer to ensure structural strength and improve insulation safety; the internal dimensions of the enclosed cavity are adapted to the frame assembly 200, and a certain gap is reserved therebetween for heat dissipation; the cabinet door 102 is made of steel plates of the same material as the protection plate 101, and one side edge is hinged to the side upright plate of the protection plate 101 through four evenly distributed stainless steel hinges, the fixed end of the hinge is fastened to the protection 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 flexibly opened and closed, and when the cabinet door 102 is closed, its edge closely fits the front edge of the protection plate 101, and a nitrile rubber sealing strip is pasted on the fitting surface to improve the dustproof and moisture-proof performance of the cabinet body; meanwhile, a purple copper grounding terminal is welded on the inner side of the protection plate 101 near the bottom, and the terminal is connected to the bracket 203 of the frame assembly 200 through a yellow-green double-color grounding wire to provide grounding protection for the entire low-voltage cabinet.

[0036] Cooperating with it is the frame assembly 200, which serves as an internal support structure for carrying the electrical assembly 300 and the elastic wire winding assembly 400, including a bottom plate 201, a top plate 202, a bracket 203, a hollow layer 204, and a reinforcing rib: the bottom plate 201 and the top plate 202 are both rectangular steel plates, and they are arranged in parallel and spaced apart (the spacing is designed according to the height of the cabinet body), serving as the upper and lower bearing surfaces of the frame; the bracket 203 is made of four rectangular steel columns (or square tubes), which are respectively vertically welded to the four corner positions of the bottom plate 201 and the top plate 202 to form the main body of the frame, and the welding positions of the bracket 203 with the bottom plate 201 and the top plate 202 are all reinforced by fillet welding to ensure the stability of the overall structure; the reinforcing rib is an L-shaped angle steel, which is welded to the connection between the bracket 203 and the bottom plate 201 and the top plate 202 (at least one reinforcing rib at each connection point), further enhancing the structural strength of the frame assembly 200; the hollow layer 204 is a grid-shaped steel plate, which is fixed horizontally at the middle position of the four brackets 203 and is parallel to the bottom plate 201 and the top plate 202, and it can not only assist in carrying some light electronic components 304, but also enhance the air circulation inside the cabinet body to improve the heat dissipation efficiency.

[0037] The electrical assembly 300 is the core of the low-voltage cabinet power distribution and control function, which includes the main circuit breaker 301, sub-circuit breaker 303, copper fixed clamp 302, electronic components 304, mounting base 305, guide rail 306 and bus 307: the mounting base 305 is a rectangular steel plate, which is fixed on the upper surface of the bottom plate 201 of the frame assembly 200 by expansion bolts. During installation, it needs to be calibrated by a level meter to provide a flat reference for subsequent component installation; the guide rail 306 is two parallel C-shaped cold-drawn steel rails, which are fixed along the length direction of the mounting base 305 by T-shaped bolts. The notches of the guide rail 306 are oppositely arranged, and the slots are provided with elastic buckles (made of spring steel material). The main circuit breaker 301, sub-circuit breaker 303 and electronic components 304 are clamped on the guide rail 306 by the elastic buckles, which facilitates installation and removal, and at the same time ensures the stable installation of each component; the main circuit breaker 301 is a molded case circuit breaker, which is installed at one end of the guide rail 306. The sub-circuit breaker 303 is a miniature circuit breaker, the number of which is set according to actual needs and is clamped in parallel in the middle of the guide rail 306. A certain gap is reserved between adjacent sub-circuit breakers 303 to avoid mutual interference during operation. The bus 307 is a flat copper busbar, which is used as the main trunk line for power transmission and is fixed overhead on the bracket 203 of the frame assembly 200 by the copper fixed clamp 302. The copper fixed clamp 302 is made of insulating nylon material, the bottom is connected with the bracket 203 by bolts, and the middle part is provided with a groove matched with the bus 307, which not only fixes the bus 307 but also realizes insulation isolation. The input end of the bus 307 is connected with the output end of the main circuit breaker 301, and the output end is connected with the input end of each sub-circuit breaker 303 through a branch copper busbar. Conductive connectors are arranged at the connection positions to enhance the conductivity and stability of the connection positions. The electronic components 304 include relays, contactors, multifunctional ammeters, etc., which are clamped on the end of the guide rail 306 away from the main circuit breaker 301 by the bottom buckle, and are connected with the output end of the sub-circuit breaker 303 through wires to realize fine control of the circuit and parameter monitoring.

[0038] As the core innovative component of the present application, the elastic winding assembly 400 is used to realize the elastic winding and buffering of the cable, which comprises a mounting frame 401, a support rod 402, a spring 403, a connecting rod 404, an extension rod 405 and a baffle 406: the mounting frame 401 is an L-shaped steel plate, the vertical surface of which is fastened to the back plate 308 of the frame assembly 200 through bolts, and the horizontal surface serves as the installation reference of the support rod 402; one end of the support rod 402 is hinged to the horizontal surface of the mounting frame 401 through a deep groove ball bearing - the inner ring of the bearing is in interference fit with the support rod 402, and the outer ring is in clearance fit with the mounting frame 401, which ensures that the support rod 402 can rotate flexibly, and a limiting structure is arranged at the hinge to limit the rotation angle of the support rod 402, so as to avoid excessive rotation of the support rod 402 which may damage the elastic winding assembly 400 or affect the normal winding 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, and the other end internally sleeves the extension rod 405, which is a stepped stainless steel rod and can freely slide along the axial direction of the connecting rod 404; the spring 403 is a compression spring, which is sleeved outside the extension rod 405, one end of which abuts against the end surface of the connecting rod 404, and the other end abuts against the baffle 406, which provides a buffering force through its elastic deformation, and the elastic coefficient is selected according to the range of tension that the cable bears, so as to ensure that the cable is provided with appropriate buffering force and elastic winding capacity; the baffle 406 is a circular insulating rubber plate, the center of which is fixedly welded to the end of the extension rod 405 away from the connecting rod 404, and the surface is provided with an annular groove for accommodating and fixing the cable, which not only avoids sliding wear of the cable, but also uniformly transmits the elastic force of the spring 403 to the cable. Through the elastic deformation of the spring 403 and the extension and retraction cooperation of the extension rod 405, the elastic winding and buffering of the cable are realized.

[0039] Based on the low-voltage cabinet structure described above, the present application 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 support 203, install the hollow layer 204 and the reinforcing ribs, and ensure the stability of the frame structure; then, assemble the cabinet body assembly 100, fix the protective plate 101, connect the cabinet door 102, and ensure the protection performance of the cabinet body; then, install the electrical assembly 300, fix the base 305 and the guide rail 306 on the frame assembly 200, and sequentially install and connect the main circuit breaker 301, the sub-circuit breaker 303, the bus bar 307 and the electronic components 304, so as to ensure reliable electrical connection; then, assemble the elastic winding assembly 400, fix the mounting frame 401 to the frame assembly 200, sequentially connect the support rod 402, the connecting rod 404 and the extension rod 405, sleeve the spring 403 and install the baffle 406, and test the flexibility of the elastic components; finally, assemble the frame assembly 200 into the cabinet body assembly 100, connect the cables of the electrical assembly 300 and the elastic winding assembly 400, and perform function debugging to ensure that the entire low-voltage cabinet operates normally.

[0040] (1) The low-voltage cabinet with elastic winding structure and the assembling method thereof, through the cooperation of the spring and the telescopic rod in the elastic winding assembly, realize the elastic winding and buffer protection of the cable. When the cable is pulled by external force or expands due to temperature change, the elastic deformation of the spring can offset part of the stress, and the telescopic adjustment of the telescopic rod can adapt to the length change of the cable, effectively reducing the risks of cable insulation layer aging, copper core fracture and the like, and significantly improving the stability of the low-voltage cabinet operation.

[0041] (2) The low-voltage cabinet with elastic winding structure and the assembling method thereof, through the strengthening of the overall cooperative performance: each component forms an organic whole through reasonable connection relationship, and the precise cooperation of the elastic winding assembly and the electrical assembly 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 details design of grounding parts, conductive connecting parts and the like further improves the power safety and power transmission efficiency of the equipment, and the overall structure has high practical value and popularization significance.

[0042] Those skilled in the art will readily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A low voltage switchgear of elastic winding structure, characterized in that, It comprises a cabinet assembly (100), a frame assembly (200), an electrical assembly (300) and an elastic 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 mounting rack (401) of the elastic winding assembly (400) is fixedly connected with the back plate (308) of the frame assembly (200), and the elastic winding assembly (400) is connected with the electrical assembly (300) through a cable. The electrical assembly (300) comprises a main circuit breaker (301), a sub-circuit breaker (303), a copper bar fixing clamp (302), an electronic element (304), a mounting base (305), a guide rail (306) and a busbar (307), wherein the mounting base (305) is fixed on the bottom plate (201) of the frame assembly (200), the guide rail (306) is fixed on the mounting base (305), the main circuit breaker (301), the sub-circuit breaker (303) and the electronic element (304) are installed on the guide rail (306), and the busbar (307) is fixed on the support (203) of the frame assembly (200) through the copper bar fixing clamp (302) and connected with the main circuit breaker (301) and the sub-circuit breaker (303). The elastic winding assembly (400) comprises a mounting rack (401), a support rod (402), a spring (403), a connecting rod (404), an extension rod (405) and a baffle (406), wherein the mounting rack (401) is fixed on the back plate (308) of the frame assembly (200), one end of the support rod (402) is hinged to the mounting rack (401), the other end is connected with the connecting rod (404), one end of the extension rod (405) is inserted into the connecting rod (404) and can be extended and retracted relative to the connecting rod (404), the spring (403) is sleeved outside the extension rod (405) and the two ends are respectively abutted with the connecting rod (404) and the baffle (406), and the baffle (406) is fixed on the end of the extension rod (405) away from the connecting rod (404); through the elastic deformation of the spring (403) and the extension and retraction cooperation of the extension rod (405), the elastic winding and buffering of the cable are realized.

2. The low voltage switchgear with elastic winding structure according to claim 1, wherein, The cabinet assembly (100) comprises a protection plate (101) and a cabinet door (102); the protection plate (101) is surrounded to form a cavity structure, and adjacent protection plates (101) are fixedly connected; one side of the cabinet door (102) is hinged to the protection plate (101) and can be opened and closed relative to the protection plate (101), and is attached to the protection plate (101) when closed.

3. The low voltage switchgear with elastic winding structure according to claim 2, wherein, The frame assembly (200) comprises a bottom plate (201), a top plate (202), a support (203) and a hollow layer (204); the bottom plate (201) and the top plate (202) are arranged in parallel and spaced apart, the support (203) is connected between the bottom plate (201) and the top plate (202) to form a frame body; the hollow layer (204) is fixed to the middle part of the support (203) and is parallel to the bottom plate (201) and the top plate (202).

4. The low voltage elastic winding structure's switchboard according to claim 1, wherein, The hinge part of the supporting rod (402) and the mounting rack (401) in the elastic winding assembly (400) is provided with a limiting structure to limit the rotation angle of the supporting rod (402), so as to avoid excessive rotation of the supporting rod (402) and damage to the elastic winding assembly (400) or affect the normal winding and unwinding of the cable.

5. The low voltage elastic winding structure's switchboard according to claim 1, wherein, The connecting part of the busbar (307) and the main circuit breaker (301) and the sub-circuit breaker (303) is provided with a conductive connecting piece.

6. The low voltage elastic winding structure's switchboard according to claim 1, wherein, The inside of the cabinet assembly (100) is provided with a grounding component connected with the frame assembly (200) to provide grounding protection for the entire low-voltage cabinet.

7. The low voltage elastic winding structure's switchboard according to claim 3, wherein, The frame assembly (200) further comprises a reinforcing rib connected to the connecting part of the support (203) and the bottom plate (201) and the top plate (202) to enhance the structural strength of the frame assembly (200).

8. The low voltage switchgear with elastic winding structure according to claim 7, wherein, The guide rail (306) is provided with an elastic buckle, and the main circuit breaker (301), the sub-circuit breaker (303) and the electronic component (304) are clamped on the guide rail (306) through the elastic buckle, which is convenient for installation and disassembly.

9. The low voltage switchgear with 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 provides appropriate buffering force and elastic winding and unwinding capacity.

10. A method of assembling a low voltage switchgear of the elastic winding structure, characterized in that, The method is based on the low-voltage cabinet of claim 7, which comprises the following steps: The bottom plate (201) and the top plate (202) are connected and fixed through the support (203), 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 component (304) are installed and connected in sequence; The mounting rack (401) is fixed to the frame assembly (200), the supporting 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 loaded into the cabinet assembly (100), the cable of the electrical assembly (300) and the elastic winding assembly (400) is connected, and function debugging is performed.

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