A structure of a high-voltage cable branch box made of SMC composite material

Abstract

The present invention provides an SMC composite high-voltage cable branch box structure, which relates to the technical field of cable branch boxes. The SMC composite high-voltage cable branch box structure includes a base, and a bottom box body is fixedly arranged at the upper end of the base. Fixing edges are fixedly arranged on four side edges of the bottom box body. A branch box body is fixedly arranged at the upper end of the bottom box body. A top plate is fixedly connected to the top of the branch box body. A mounting plate is fixedly arranged at the lower end of the top plate. A plurality of cable taps are fixedly arranged on both sides of the mounting plate. Branch box doors are rotatably connected to both sides of the top plate through two hinge seats. The present invention provides an SMC composite high-voltage cable branch box structure. The box body of this cable branch box is integrally insulated, has strong corrosion resistance and anti-aging ability, high structural strength, good sealing performance, completely eliminates the safety hazards brought by traditional cable branch boxes, and effectively guarantees the power consumption safety of the people.

Description

Technical Field

[0001] The present invention relates to the technical field of cable distribution boxes, and specifically to a structure of an SMC composite high-voltage cable distribution box. Background Art

[0002] In the 10kV distribution network cable project of the power system, due to various reasons, traditional cable distribution boxes frequently malfunction and are easily damaged by external factors. It has become a major problem to replace a large number of branches in the original distribution network cable project. The emergence of SMC material high-voltage cable distribution boxes has completely solved this problem. Moreover, due to its fully insulated and fully sealed characteristics, the line failure rate has been greatly reduced, making it the preferred equipment for the distribution network cable project. Its simple, convenient and flexible connection combination method enables it to replace ring main units in some occasions, saving the investment in equipment and cables and improving the reliability of power supply. It is widely applicable to commercial centers, industrial parks and urban dense areas. Cable distribution boxes can be divided into three types: American cable distribution boxes, European cable distribution boxes and cable distribution boxes with switches according to different structural forms and cable joint types.

[0003] Most traditional cable distribution boxes are made of metal materials bent and welded. When placed outdoors for a long time, they are extremely prone to rust, seriously affecting their service life and increasing the maintenance cost in the power distribution system. At the same time, due to the electrical conductivity of the metal material, the distribution box body is easily electrified under certain special circumstances, seriously threatening people's lives and property safety.

[0004] The existing patent (publication number: CN2667758Y) discloses a high-voltage cable distribution box, including a box body and a box cover. A bracket is fixed on the box body. The left and right side covers and the upper cover are all hinged to the upper edge of the bracket. The left and right side covers and the upper cover are all connected to the top surface of the bracket through movable support rods. The left and right side covers can be turned up simultaneously and fixed by the support rods. Wiring operations can be carried out simultaneously on the left and right sides without interfering with each other. At the same time, an upper cover is arranged above the left and right side covers. On the top surfaces of the left and right side covers, mesh pressure plates for ventilation are respectively arranged. The hot air inside the box can be discharged through the above-mentioned mesh pressure plates to the gap between the upper cover and the side covers and smoothly discharged from the distribution box, solving the problem of rising space temperature and ensuring safety performance. However, the structure of this distribution box is simple, the protection effect on the inside is poor, and the humid outdoor air is easy to enter the inside of the distribution box, causing the lines inside the distribution box to short-circuit, easily resulting in potential safety hazards, and its service life is short. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a high-voltage cable branch box structure made of SMC composite material, which solves the problems that most traditional cable branch boxes are made by bending and welding metal materials, are extremely prone to rust when placed outdoors for a long time, seriously affect their service life, increase the maintenance cost in the power distribution system, and at the same time, due to the conductivity of the metal material, the branch box body is easily electrified under certain special circumstances, seriously threatening the safety of people's lives and property.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A high-voltage cable branch box structure made of SMC composite material, including a base, a bottom box body is fixedly arranged at the upper end of the base, fastening edges are fixedly arranged on four side edges of the bottom box body, a branch box body is fixedly arranged at the upper end of the bottom box body, a top plate is fixedly connected to the top of the branch box body, a mounting plate is fixedly arranged at the lower end of the top plate, a plurality of cable taps are fixedly arranged on both sides of the mounting plate, two branch box doors are rotatably connected to both sides of the top plate through two hinge seats, and two electric telescopic support rods are fixedly arranged between each of the two branch box doors and the branch box body;

[0009] The branch box door includes a door front panel, door side panels, a door rear panel and a door top plate. A first limit groove is fixedly arranged at the lower end of the door front panel, a second limit groove is fixedly arranged at the lower end of the door side panels, side limit grooves are fixedly arranged on both side edges of the door side panels, a third limit groove is fixedly arranged at the lower end of the door rear panel, a plurality of first mounting holes are opened on the side walls of the door front panel and the door rear panel near the rear end, and a plurality of second mounting holes are opened on the first limit groove, the second limit groove and the third limit groove.

[0010] Preferably, a plurality of heat dissipation grooves are fixedly arranged on the front and rear side walls of the bottom box body.

[0011] Preferably, a live display is fixedly arranged at the lower end of the rear wall of the branch box body.

[0012] Preferably, locks are arranged at the lower ends of the two branch box doors.

[0013] Preferably, the bottom box body and the branch box body are detachably connected by a plurality of mounting screws.

[0014] Preferably, the side limit grooves on the door side panels and the door front panel and the door rear panel are detachably connected by a plurality of connecting screws.

[0015] Preferably, the first limit groove at the lower end of the door front panel, the second limit groove at the lower end of the door side panels and the third limit groove at the lower end of the door rear panel and the door top plate are detachably connected by a plurality of connecting screws.

[0016] Preferably, a fourth limiting groove is fixedly arranged on the door top plate, and the fourth limiting groove is clamped with the first limiting groove, the second limiting groove and the third limiting groove.

[0017] Preferably, the base, the fastening edge, the bottom box body, the branch box body, the top plate and the branch box door are all pressed from a fully insulated SMC composite material.

[0018] Working principle: When the SMC composite material high-voltage cable branch box structure is in use, various structural parts of the cable branch box are manufactured by using the SMC composite material compression molding process. Then, the molded structural parts are spliced with each other to form the box body of the cable branch box. The branch box door of the cable branch box includes a door front panel, a door side panel, a door rear panel and a door top plate. During the splicing and assembly, first take out the door front panel and lay it flat, then take out the door side panel and assemble it on the side of the door front panel. After determining that the assembly is in place, drive multiple screws to fasten it. Then, take out the door rear panel and lay it flat, and assemble the "semi-finished door assembly" assembled in the previous process on the side of the door rear panel. After determining that the assembly is in place, drive multiple screws to fasten it. Finally, take out the door top plate and lay it flat, and assemble the "semi-finished door assembly" assembled in the previous process on the inner side of the door top plate. After determining that the assembly is in place, drive multiple screws to fasten it. Thus, the assembly of the branch box door assembly is completed. The installation of each part of the entire branch box is assembled step by step according to the above installation method steps, and screws are driven at the splicing points for fixation. The box body structure of the cable branch box is manufactured by using the SMC composite material compression molding process. Since the SMC composite material has good designability and processability, and has the characteristics of high strength, precise dimensions, corrosion resistance, good stability, etc., and its fire resistance is good, heat resistance is good, and it has excellent anti-aging performance, the made branch box has a completely insulated performance. Even if a wire falls off inside the box body, the box body is still not electrified, reducing the probability of accidental electric shock and ensuring the safety of power use. At the same time, since the SMC composite material belongs to a thermosetting composite material and its recycling value is low, it can effectively prevent the theft of the high-voltage cable branch box box body.

[0019] (III) Beneficial effects

[0020] The present invention provides an SMC composite material high-voltage cable branch box structure, having the following beneficial effects:

[0021] 1. The present invention provides a structure of an SMC composite high-voltage cable distribution box. The box body structure of this cable distribution box is entirely manufactured by the compression molding process of fully insulated SMC composite materials. Since SMC composite materials have good designability and processability, and have characteristics such as high strength, precise dimensions, corrosion resistance, good stability, good fire resistance, good heat resistance, and excellent anti-aging performance, the resulting distribution box has an all-insulating characteristic that cannot be compared with the distribution box welded from metal materials. The box body of the traditional distribution box welded from metal is non-insulated, and electric shock safety accidents are likely to occur during use, posing a greater danger. However, the SMC composite high-voltage cable distribution box can achieve the overall insulation of the entire box body. Even if a cable falls off inside the box body, the outside of the box body is still not charged, and construction workers will not get an electric shock when touching the box body, greatly reducing the probability of accidental electric shock and ensuring the safety of electricity use. At the same time, since SMC composite materials belong to thermosetting composite materials and have a low recycling value, it can effectively prevent the theft of the box body of the high-voltage cable distribution box.

[0022] 2. The present invention provides a structure of an SMC composite high-voltage cable distribution box. The traditional cable distribution box is formed by bending and welding metal materials, which pollutes the environment during welding. The cable distribution box made of SMC composite materials is formed by splicing between sheet-like compression-molded structural parts. As long as screws are used to fix and connect at the splicing points, the manufacturing process is more environmentally friendly, and the appearance is also more beautiful. It has many characteristics such as simple installation, firm structure, and easy maintenance, is relatively easy to install, and has strong practicability.

[0023] 3. The present invention provides a structure of an SMC composite high-voltage cable distribution box. The insulation performance of this cable distribution box is good, effectively guaranteeing the safety of people's electricity use. It has strong corrosion resistance and anti-aging ability, can effectively prevent the box body surface from being eroded by air and long-term rainwater, greatly extending the service life of the product. It has high structural strength, greatly enhancing the anti-drop and anti-fall ability of the product. It has good sealing performance, effectively guaranteeing the normal operation of the components inside the distribution box, making the incoming and outgoing lines flexible, the installation simple, and the operation convenient. And it is structurally compact and flame-retardant, completely eliminating the safety hazards brought by traditional cable distribution boxes, and being safer and more reliable to use.

[0024] 4. The present invention provides a high-voltage cable branch box structure made of SMC composite material. By setting a fourth limiting groove on the door top plate, which is mutually limited and clamped with the first limiting groove, the second limiting groove, and the third limiting groove, and then fixed by connecting screws, it can prevent misalignment during the installation of each fitting, ensure the aesthetics of the product, and enhance the structural strength of the product. Moreover, the raised edge at the upper part of the branch box door is set to be flat, which makes it easier to apply force during on-site installation and handling, and will not hurt the hands of the handlers. Compared with the traditional design where the raised edge of the branch box is concave, the handling is more convenient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0026] Figure 2 is a schematic diagram of the unfolded state of the present invention;

[0027] Figure 3 is a schematic diagram of the internal structure of the present invention;

[0028] Figure 4 is a schematic diagram of the branch box door structure of the present invention;

[0029] Figure 5 is a schematic diagram of the disassembled structure of the branch box door of the present invention.

[0030] Wherein, 1. Base; 2. Fastening edge; 3. Bottom box body; 4. Heat dissipation groove; 5. Branch box body; 6. Top plate; 7. Hinge seat; 8. Branch box door; 81. Door front panel; 811. First limiting groove; 82. Door side panel; 821. Second limiting groove; 822. Side limiting groove; 83. Door rear panel; 831. Third limiting groove; 84. Door top plate; 841. Fourth limiting groove; 85. First mounting hole; 86. Second mounting hole; 9. Lock; 10. Live line indicator; 11. Electric telescopic support rod; 12. Mounting plate; 13. Cable tap; 14. Mounting screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment:

[0033] As Figures 1-5As shown in the figure, an SMC composite high-voltage cable branch box structure is provided in an embodiment of the present invention, which includes a base 1. A bottom box body 3 is fixedly arranged at the upper end of the base 1. Fastening edges 2 are fixedly arranged on four side edges of the bottom box body 3. A branch box body 5 is fixedly arranged at the upper end of the bottom box body 3. A top plate 6 is fixedly connected to the top of the branch box body 5. An installation plate 12 is fixedly arranged at the lower end of the top plate 6. A plurality of cable taps 13 are fixedly arranged on both sides of the installation plate 12. Two branch box doors 8 are rotatably connected to both sides of the top plate 6 through two hinge seats 7. Two electric telescopic support rods 11 are fixedly arranged between the two branch box doors 8 and the branch box body 5, which is convenient to support the two branch box doors 8 and facilitate the maintenance and replacement of internal components;

[0034] The branch box door 8 includes a door front panel 81, a door side panel 82, a door rear panel 83 and a door top plate 84. A first limit groove 811 is fixedly arranged at the lower end of the door front panel 81. A second limit groove 821 is fixedly arranged at the lower end of the door side panel 82. Side limit grooves 822 are fixedly arranged on both side edges of the door side panel 82. A third limit groove 831 is fixedly arranged at the lower end of the door rear panel 83. A plurality of first installation holes 85 are opened on the side walls of the door front panel 81 and the door rear panel 83 near the rear end. A plurality of second installation holes 86 are opened on the first limit groove 811, the second limit groove 821, the third limit groove 831 and the two side limit grooves 822.

[0035] A plurality of heat dissipation grooves 4 are fixedly arranged on the front and rear side walls of the bottom box body 3, which can effectively dissipate heat inside the bottom box body 3 and prevent the service life of internal components from being reduced or damaged due to high temperature. A live display 10 is fixedly arranged at the lower end of the rear wall of the branch box body 5, which can control the on-off of the inside of the cable branch box. Locks 9 are arranged at the lower ends of the two branch box doors 8. The bottom box body 3 and the branch box body 5 are detachably connected by a plurality of installation screws 14. The side limit grooves 822 on the door side panel 82 and the door front panel 81 and the door rear panel 83 are detachably connected by a plurality of connecting screws. The first limit groove 811 at the lower end of the door front panel 81, the second limit groove 821 at the lower end of the door side panel 82 and the third limit groove 831 at the lower end of the door rear panel 83 and the door top plate 84 are detachably connected by a plurality of connecting screws. A fourth limit groove 841 is fixedly arranged on the door top plate 4, and the fourth limit groove 841 is engaged with the first limit groove 811, the second limit groove 821 and the third limit groove 831. The base 1, the fastening edge 2, the bottom box body 3, the branch box body 5, the top plate 6 and the branch box door 8 are all made of SMC composite material with good insulation performance.

[0036] This cable branch box is formed by splicing between sheet-molded structural parts. It only needs to fix and connect with screws at the splicing parts. The installation is simple, the structure is firm, and it is convenient for maintenance.

[0037] Structural components such as the base 1, fastening edge 2, bottom box body 3, branch box body 5, top plate 6, and branch box door 8 are all manufactured by using the SMC composite material with good insulation performance through the compression molding process, making the manufactured high-voltage cable branch box have the advantages of light weight, aging resistance, good sealing performance, safety and beauty, being able to provide all-weather protection, and being able to meet the needs of various harsh environments and places in outdoor engineering projects.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage cable distribution box structure made of SMC composite material, comprising a base (1), characterized in that: A bottom box body (3) is fixedly arranged at the upper end of the base (1). Fastening edges (2) are fixedly arranged on four side edges of the bottom box body (3). A branch box body (5) is fixedly arranged at the upper end of the bottom box body (3). A top plate (6) is fixedly connected to the top of the branch box body (5). An installation plate (12) is fixedly arranged at the lower end of the top plate (6). A plurality of cable taps (13) are fixedly arranged on both sides of the installation plate (12). Branch box doors (8) are rotatably connected to both sides of the top plate (6) through two hinge seats (7). Two electric telescopic support rods (11) are fixedly arranged between each of the two branch box doors (8) and the branch box body (5). The branch box door (8) includes a door front panel (81), a door side panel (82), a door rear panel (83) and a door top plate (84). A first limit groove (811) is fixedly arranged at the lower end of the door front panel (81). A second limit groove (821) is fixedly arranged at the lower end of the door side panel (82). Side limit grooves (822) are fixedly arranged on both side edges of the door side panel (82). A third limit groove (831) is fixedly arranged at the lower end of the door rear panel (83). A plurality of first mounting holes (85) are formed in the side walls of the door front panel (81) and the door rear panel (83) near the rear end. A plurality of second mounting holes (86) are formed in the first limit groove (811), the second limit groove (821), the third limit groove (831) and the two side limit grooves (822).

2. The structure of a high-voltage cable distribution box made of SMC composite material according to claim 1, characterized in that: A plurality of heat dissipation grooves (4) are fixedly arranged on the front and rear side walls of the bottom box body (3).

3. The structure of a high-voltage cable distribution box made of SMC composite material according to claim 1, wherein: A live display (10) is fixedly arranged at the lower end of the rear wall of the branch box body (5).

4. A structure of a high-voltage cable branch box made of SMC composite material according to claim 1, characterized in that: Locks (9) are arranged near the lower ends of the two branch box doors (8).

5. A structure of a high-voltage cable distribution box made of SMC composite material according to claim 1, characterized in that: The bottom box body (3) and the branch box body (5) are detachably connected through a plurality of mounting screws (14).

6. The structure of a high-voltage cable distribution box made of SMC composite material according to claim 1, characterized in that: The side limit grooves (822) on the door side panel (82) and the door front panel (81) and the door rear panel (83) are detachably connected through a plurality of connecting screws.

7. The structure of a high-voltage cable distribution box made of SMC composite material according to claim 1, characterized in that: The first limit groove (811) at the lower end of the door front panel (81), the second limit groove (821) at the lower end of the door side panel (82) and the third limit groove (831) at the lower end of the door rear panel (83) and the door top plate (84) are detachably connected through a plurality of connecting screws.

8. A structure of a high-voltage cable branch box made of SMC composite material according to claim 1, characterized in that: A fourth limit groove (841) is fixedly arranged on the door top plate (84), and the fourth limit groove (841) is engaged with the first limit groove (811), the second limit groove (821) and the third limit groove (831).

9. The structure of a high-voltage cable distribution box made of SMC composite material according to claim 1, characterized in that: The base (1), the fastening edge (2), the bottom box body (3), the branch box body (5), the top plate (6) and the branch box door (8) are all made of SMC composite material with good insulation performance.

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