Energy-saving and environment-friendly low-voltage cable branch box

Abstract

The application relates to an energy-saving and environment-friendly low-voltage cable branch box, which comprises a box body, a box cover slidingly arranged at the upper end of the box body, two inclined surfaces arranged at the top of the box cover, a rebound supporting mechanism arranged between the box body and the box cover, wherein the rebound supporting mechanism comprises a first spring, the upper end of the first spring is fixedly connected with the box cover, and the lower end of the first spring is fixedly connected with the box body; through the arrangement of the eccentric flywheel, the gear, the rack, the first magnet, the second magnet and the third spring, when the box cover slides upwards, the rotating shaft is rapidly rotated under the action of the gear and the rack, the eccentric flywheel continues to keep rapid rotation under the action of inertia after the gear and the rack are separated, the supporting frame slides up and down, the second magnet rapidly moves up and down, and the first magnet constantly approaches and moves away, the elastic cloth is rapidly and repeatedly pulled down due to the mutual attraction between the first magnet and the second magnet, and the accumulated snow is rapidly shaken off under the elastic force of the elastic cloth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable branch boxes, in particular to an energy-saving and environment-friendly low-voltage cable branch box. BACKGROUND

[0002] The cable branch box is only used for cable branching, and the main function of the cable branch box is to branch or switch cables, mainly serving as a cable branching function and a cable switching function. The existing cable branch box is generally a rectangular box structure, and the upper end is horizontal. In heavy snow weather, snow accumulates on the top of the box, which causes a great burden on the cable branch box and easily damages the box body of the cable branch box.

[0003] Through retrieval, the cable branch box with high heat dissipation efficiency in the Chinese patent application No. 201911089903.0 is provided with a deicing device on the upper end, the deicing device is provided with a shatter device, and when in use, the knocking block knocks the top plate to shatter the ice, and the ice is directly removed by the metal shovel. However, the deicing device of the branch box cannot be automatically started and needs to be started manually. When the snow accumulates, it cannot be processed in the first time.

[0004] Therefore, the energy-saving and environment-friendly low-voltage cable branch box is proposed to solve the above problems. SUMMARY

[0005] In view of the problems in the prior art, the present application provides an energy-saving and environment-friendly low-voltage cable branch box, which can automatically remove the snow accumulated on the top of the box.

[0006] The technical scheme adopted by the present application to solve the technical problems is: an energy-saving and environment-friendly low-voltage cable branch box, comprising a box body, a box cover slidingly arranged at the upper end of the box body, two inclined surfaces arranged at the top of the box cover, a rebound support mechanism arranged between the box body and the box cover, and the rebound support mechanism comprising:

[0007] a first spring, the upper end of the first spring being fixedly connected with the box cover, and the lower end of the first spring being fixedly connected with the box body;

[0008] a damping mechanism, the damping mechanism comprising a damping pad fixedly arranged on the inner wall of the box body, a vertical plate fixedly arranged on the inner side of the box cover, a fixed seat fixedly arranged on the vertical plate, a damping block slidingly arranged on the fixed seat, an iron block fixedly arranged at the rear end of the damping block, a second spring connected between the damping block and the vertical plate, and an electromagnet mounted at the rear end of the fixed seat, a cut-off switch for cutting off the power supply of the electromagnet being mounted on the upper part of the fixed seat of the box body, and an on-off switch for turning on the power supply of the electromagnet being mounted on the lower part of the fixed seat of the box body;

[0009] The slope surface is provided with an opening, an elastic cloth is fixed in the opening, a first magnet is fixed to the lower surface of the elastic cloth, a sliding block is slidably arranged in the vertical direction in the box cover, a third spring is connected between the sliding block and the top of the box cover, the sliding block is fixed with a support frame, the support frame is fixed with a second magnet which is magnetically attracted to the first magnet, the sliding block is rotatably provided with a rotating shaft, the rotating shaft is fixed with a gear, the box body is fixed with a rack, the upper end of the rack has a gap, and an eccentric flywheel is fixed on the rotating shaft.

[0010] Preferably, the outside of the cut-off switch is provided with a buffer mechanism, the buffer mechanism comprises a spring air bag arranged outside the cut-off switch, and the side surface of the spring air bag is provided with an exhaust hole.

[0011] Preferably, the inside of the spring air bag is provided with a fourth spring, one end of the fourth spring is fixedly connected with the box body, and the other end of the fourth spring is fixedly connected with the head of the spring air bag.

[0012] Preferably, the inner wall of the box cover is fixed with two first sliding rails, two sliding blocks are slidably arranged in the two first sliding rails, and the two ends of the rotating shaft are rotatably connected with the two sliding blocks, respectively.

[0013] Preferably, the inner wall of the box cover is fixed with a second sliding rail, and the support frame is slidably connected with the second sliding rail.

[0014] Preferably, the box cover is fixed with a guide sliding rod, the box body is fixed with a guide ring, the lower end of the guide sliding rod penetrates through the guide ring, and the lower end of the guide sliding rod is integrally formed with a limiting block.

[0015] Preferably, the upper end of the box body is fixed with a triangular roof panel, and two water leakage openings are arranged through the upper part of the two sides of the box body.

[0016] Preferably, the water leakage opening is fixed with a dust screen.

[0017] The beneficial effects of the present application are:

[0018] 1、 the upper end of the box body is slidably provided with a box cover, and the top of the box cover is provided with two slope surfaces, which are more conducive to the sliding of snow from the top of the box cover from both sides, effectively preventing the accumulation of snow on the upper surface of the box body.

[0019] 2、The present application gradually increases the snow on the box cover, which drives the box cover to slide down and compress the first spring, when the snow on the box cover reaches a certain weight, under the action of the rebound support mechanism, the box cover slides up rapidly, when the limiting block of the guide slide rod touches the guide ring, collision occurs, which makes the box cover vibrate, which is beneficial to shake off the snow, so that the snow slides off, and the box cover moves up rapidly and stops, under the action of inertia, the snow will continue to be thrown upwards, which is beneficial to the separation of snow and the box cover.

[0020] 3、The present application is provided with a damping mechanism, when the box cover slides down, the damping block keeps close to the damping pad under the action of the second spring, under the action of friction and the pressure of the box cover, the first spring is compressed, when the snow reaches a certain weight, the switch is turned on to connect the circuit of the electromagnet, the electromagnet generates magnetic force after being electrified, attracting the iron block and driving the damping block to slide, so that the damping block and the damping pad are separated instantaneously, losing the effect of friction, and the box cover automatically slides up to shake off the snow.

[0021] 4、The present application is provided with an eccentric flywheel, a gear, a rack, a first magnet, a second magnet and a third spring, when the box cover slides up, under the action of the gear and the rack, the rotating shaft rotates rapidly, so that after the gear and the rack are separated, the eccentric flywheel continues to rotate rapidly under the action of inertia, driving the support frame to slide up and down, so that the second magnet moves up and down rapidly, and the first magnet constantly approaches and moves away, since the first magnet and the second magnet attract each other, and the first magnet is fixedly connected with the inner surface of the elastic cloth, when the first magnet and the second magnet approach, the second magnet pulls down the elastic cloth, when the first magnet and the second magnet move away, the elastic cloth springs up under the action of its own elastic force, in the process of the elastic cloth being pulled down and springing up, the snow is quickly shaken off, and automatic snow removal can be realized by simple electric equipment, which is energy-saving and environmentally friendly.

[0022] 5、The present application is provided with a buffer mechanism outside the cut-off switch, the buffer mechanism includes a spring air bag arranged outside the cut-off switch, the side surface of the spring air bag is provided with an exhaust hole, when the fixed seat slides up, it will first collide with the spring air bag, when the spring air bag is compressed, the air inside is discharged outward through the exhaust hole, so that the spring air bag is compressed, playing a buffering role, after the spring air bag is compressed, the fixed seat contacts the cut-off switch again, effectively preventing the cut-off switch from being subjected to severe impact.

[0023] 6. The upper part of the box body of the present invention is designed to be closed. Specifically, a triangular roof panel is fixed near the upper part of the box body. Two drain holes are provided on both sides of the box body above the triangular roof panel. When a small amount of rainwater enters the inside of the box cover through the elastic cloth, it falls to the top of the triangular roof panel and then flows outward from the drain holes along the slope. The drain holes also allow the two sides of the upper part of the box body to be open, which can better remove heat when the air is circulating, thus facilitating heat dissipation. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of an energy-saving and environmentally friendly low-voltage cable branch box provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the box cover structure of the present invention;

[0027] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of the electromagnet circuit structure of the present invention;

[0029] Figure 5 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0030] Figure 6 For the present invention Figure 3 Enlarged structural diagram at point B;

[0031] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C.

[0032] In the diagram: 1. Box body; 2. Box cover; 3. Sloping surface; 31. Opening; 4. Rebound support mechanism; 41. First spring; 42. Damping pad; 43. Vertical plate; 431. Fixed seat; 44. Damping block; 441. Iron block; 45. Second spring; 46. Electromagnet; 47. Cut-off switch; 48. Turn-on switch; 5. Elastic cloth; 6. First magnet; 7. Sliding block; 8. Third spring; 9. Support frame; 10. Second magnet; 11. Rotating shaft; 12. Gear; 13. Rack; 14. Notch; 15. Eccentric flywheel; 16. Spring airbag; 161. Exhaust hole; 17. Fourth spring; 18. First slide rail; 19. Second slide rail; 20. Guide slide rod; 201. Limiting block; 21. Guide ring. Detailed Implementation

[0033] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0034] As shown in Figures 1-7 The energy-saving and environment-friendly low-voltage cable branch box of the present application comprises a box body 1, a box cover 2 slidingly arranged at the upper end of the box body 1, two inclined surfaces 3 arranged at the top of the box cover 2 on both sides, the arrangement of the two inclined surfaces 3 being more conducive to the sliding of snow from the top of the box cover 2 from both sides, effectively preventing the accumulation of snow on the upper surface of the box body 1, a rebound support mechanism 4 arranged between the box body 1 and the box cover 2, the rebound support mechanism 4 being used for supporting the box cover 2, and when the snow on the top of the box cover 2 reaches a certain weight, the rebound support mechanism 4 rebounds upward, causing the box cover 2 to slide upward and shake off the snow. Specifically, the rebound support mechanism 4 comprises:

[0035] a first spring 41, the upper end of the first spring 41 being fixedly connected with the box cover 2, the lower end of the first spring 41 being fixedly connected with the box body 1, the box cover 2 being fixedly provided with a guide sliding rod 21, the box body 1 being fixedly provided with a guide ring 22, the lower end of the guide sliding rod 21 penetrating through the guide ring 22, and the lower end of the guide sliding rod 21 being integrally formed with a limiting block 211, the box cover 2 sliding upward causing the guide sliding rod 21 to slide upward, and the snow on the surface of the box cover 2 sliding upward when the box cover 2 slides upward, the limiting block 211 of the guide sliding rod 21 colliding with the guide ring 22 when the limiting block 211 of the guide sliding rod 21 collides with the guide ring 22, the collision causing the box cover 2 to vibrate, and the snow being separated from the box cover 2 and sliding downward due to inertia;

[0036] The damping mechanism comprises a damping pad 42 fixed to the inner wall of the box body 1, a vertical plate 43 fixed to the inner side of the box cover 2, a fixing seat 431 fixed to the vertical plate 43, a damping block 44 slidingly arranged on the fixing seat 431, an iron block 441 fixed to the rear end of the damping block 44, a second spring 45 connected between the damping block 44 and the vertical plate 43, and an electromagnet 46 mounted at the rear end of the fixing seat 431. A cut-off switch 47 for cutting off the power supply of the electromagnet 46 is mounted at the upper part of the fixing seat 431 of the box body 1, and an on switch 48 for turning on the power supply of the electromagnet 46 is mounted at the lower part of the fixing seat 431 of the box body 1. As the snow increases, the box cover 2 gradually slides downward and compresses the first spring 41, the elastic potential energy of the first spring 41 increases, and the box cover 2 slides downward, driving the vertical plate 43 to slide downward, the vertical plate 43 slides downward, driving the fixing seat 431 to slide downward, the fixing seat 431 slides downward, driving the damping block 44 to slide downward, the damping block 44 is kept in close contact with the damping pad 42 under the action of the second spring 45, when the fixing seat 431 slides and touches the on switch 48, the circuit of the electromagnet 46 is turned on, a magnetic force is generated and an attractive force is generated on the iron block 441 at the rear end of the damping block 44, so that the iron block 441 slides backward, driving the damping block 44 and the damping pad 42 to separate, losing the effect of friction, under the action of the elastic force of the first spring 41, the box cover 2 slides upward rapidly, when the box cover 2 slides to the upper end, the cut-off switch 47 is touched, the circuit of the electromagnet 46 is cut off, the electromagnet 46 loses the attractive force on the iron block 441, and the damping block 44 slides outward and is in close contact with the damping pad 42 again.

[0037] Please refer to Figure 4 The circuit structure diagram of the electromagnet 46, the cut-off switch 47 and the on switch 48 is shown, the cut-off switch 47 and the on switch 48 are double-control connected, and the cut-off switch 47 and the on switch 48 are both press-type switches, at this time, the circuit of the electromagnet 46 is in an off state and is not powered on, when the fixing seat 431 moves downward and collides with the on switch 48, the circuit is turned on and the electromagnet 46 is powered on, when the fixing seat 431 moves upward and collides with the cut-off switch 47, the circuit is cut off and the electromagnet 46 is powered off, thereby realizing that when the snow on the box cover 2 reaches a certain weight, the box cover 2 slides downward and automatically turns on the circuit of the electromagnet 46, so that the damping block 44 automatically separates from the damping pad 42, the box cover 2 automatically slides upward rapidly, without manual control, and automatic snow removal can be realized by simple power equipment, which is energy-saving and environmentally friendly.

[0038] Two inclined surfaces 3 are provided with two openings 31, and two elastic cloths 5 are fixed in the two openings 31. The elastic cloth 5 is made of waterproof fabric. When the box cover 2 slides upward rapidly, the snow on the surface of the box cover 2 moves upward rapidly. Since the snow cannot be shaken off at one time, when it falls again, it will compress the elastic cloth 5, so that the elastic cloth 5 deforms and shakes rapidly, which is beneficial to shake off the snow.

[0039] To enhance the shaking effect of the elastic cloth 5, a first magnet 6 is fixedly installed on the lower surface of the elastic cloth 5. A sliding block 7 is slidably installed vertically inside the box cover 2. A third spring 8 is connected between the sliding block 7 and the top of the box cover 2. Support frames 9 are fixed on both sides of the sliding block 7. A second magnet 10, which is magnetically attracted to the first magnet 6, is fixed on the support frames 9. The sliding block 7 is rotatably provided with a rotating shaft 11. A gear 12 is fixed on the rotating shaft 11. A rack 13 is fixed on the box cover 2. The upper end of the rack 13 has a notch 14. An eccentric flywheel 15 is fixed on the rotating shaft 11. As the snow accumulation on the box cover 2 gradually increases, it will cause the box cover 2 to slowly move downward. When the box cover 2 slowly moves downward, it will cause the sliding block 7 to move downward. The downward movement of the sliding block 7 will cause the rotating shaft 11 to move downward. When the gear 12 of the rotating shaft 11 begins to contact the rack 13, it starts to rotate slowly counterclockwise. However, when there is excessive snow accumulation and the spring-loaded support mechanism 4 is activated, the cover 2 moves upward rapidly, causing the gear 12 to rotate rapidly clockwise as it moves upward, which in turn drives the rotating shaft 11 to rotate rapidly. This is because an eccentric flywheel 15 is fixed on the rotating shaft 11. When the eccentric flywheel 15 rotates rapidly, it drives the sliding block 7 to slide up and down, thereby causing the support frame 9 and the second magnet 10 to slide up and down rapidly. This causes the second magnet 10 and the first magnet 6 to continuously move closer and further apart. Since the first magnet 6 is fixedly connected to the elastic cloth 5, when the second magnet 10 and the first magnet 6 approach each other, the second magnet 10 exerts a downward attraction on the first magnet 6, thus pulling the elastic cloth 5 downward. When the second magnet 10 and the first magnet 6 move away from each other, and the attraction between the second magnet 10 and the first magnet 6 is less than the pulling force of the elastic cloth 5 on the first magnet 6, the elasticity of the elastic cloth 5 causes the first magnet 6 and the second magnet 10 to separate rapidly. This allows the elastic cloth 5 to be pulled downward and then quickly bounce upward. This process is repeated to quickly shake off the accumulated snow.

[0040] To prevent the fixing seat 431 from damaging the cut-off switch 47, a buffer mechanism is provided on the outside of the cut-off switch 47. The buffer mechanism includes a spring air bladder 16 located on the outside of the cut-off switch 47. The spring air bladder 16 has an exhaust hole 161 on its side. When the fixing seat 431 slides upward, it will first collide with the spring air bladder 16, causing the spring air bladder 16 to compress. The air inside the spring air bladder 16 will be discharged through the exhaust hole 161, thus playing a buffering role. After the spring air bladder 16 is compressed to a certain extent, the fixing seat 431 will contact the cut-off switch 47, effectively preventing the cut-off switch 47 from being subjected to violent impact.

[0041] Further, the inside of the spring air bag 16 is provided with a fourth spring 17, one end of the fourth spring 17 is fixedly connected with the box body 1, the other end of the fourth spring 17 is fixedly connected with the head of the spring air bag 16. When the fixed seat 431 hits the spring air bag 16, the fourth spring 17 is contracted, and when the fixed seat 431 leaves the spring air bag 16, under the action of the elastic force of the fourth spring 17, the spring air bag 16 can be better restored.

[0042] Please refer to Figure 2 and Figure 5 The inner wall of the box cover 2 is fixedly provided with two first sliding rails 18, two sliding blocks 7 are slidably arranged in the two first sliding rails 18, and the two ends of the rotating shaft 11 are rotatably connected with the two sliding blocks 7. Through the arrangement of the first sliding rail 18, the sliding of the sliding block 7 is guided, and the stability of the sliding block 7 during sliding is improved.

[0043] Please refer to Figure 2 The inner wall of the box cover 2 is fixedly provided with two second sliding rails 19, and the support frame 9 is slidably connected with the second sliding rail 19. Through the arrangement of the second sliding rail 19, the sliding of the support frame 9 is guided, and the stability of the support frame 9 during sliding is improved.

[0044] Please refer to Figure 3 It is worth mentioning that, in order to prevent rainwater from entering the box body 1, we design the upper end of the box body 1 in a closed manner. Specifically, the box body 1 is fixedly provided with a triangular roof panel 101 near the upper end, and two water leakage openings 102 are provided on the two sides of the box body 1 above the triangular roof panel 101. When a small amount of rainwater enters the inside of the box cover 2 through the elastic cloth 5, it falls to the top of the triangular roof panel 101 and then flows out from the water leakage opening 102 along the inclined surface. The arrangement of the triangular roof panel 101 can quickly drain the rainwater entering the box cover 2 through the elastic cloth 5, and can also make the rainwater entering from the outside of the water leakage opening 102 flow out quickly under the action of gravity. Through the arrangement of the water leakage opening 102, the upper end of the box body 1 is penetrated on both sides, and when the air flows, it can better take away the heat, which is beneficial to heat dissipation.

[0045] Please refer to Figure 1 and Figure 3 Further, the water leakage opening 102 is fixedly provided with a dust screen 103, and the dust screen 103 is arranged to prevent dust from entering.

[0046] Working principle: when it is snowing, the snow accumulates on the top of the box cover 2 on the box body 1, as the snow increases, the box cover 2 gradually slides down and compresses the first spring 41, the elastic potential energy of the first spring 41 increases, and the box cover 2 slides down, the vertical plate 43 slides down, the fixed seat 431 slides down, the damping block 44 slides down under the action of the second spring 45, and the damping block 44 keeps close to the damping pad 42 under the action of the second spring 45, when the fixed seat 431 slides and touches the on-off switch 48, the circuit of the electromagnet 46 is turned on, a magnetic force is generated, and an attractive force is generated on the iron block 441 at the rear end of the damping block 44, so that the iron block 441 slides backward, drives the damping block 44 and the damping pad 42 to separate, loses the friction effect, under the action of the elastic force of the first spring 41, drives the box cover 2 to slide upward rapidly, when the box cover 2 slides to the upper end, touches the cut-off switch 47, cuts off the circuit of the electromagnet 46, so that the electromagnet 46 loses the attractive force on the iron block 441, so that the damping block 44 slides outward and tightly abuts against the damping pad 42 again, when the box cover 2 slides downward slowly with the increase of snow, the box cover 2 slowly moves downward, the sliding block 7 moves downward, the sliding block 7 moves downward and drives the rotating shaft 11 to move downward, when the gear 12 of the rotating shaft 11 begins to contact the rack 13, it begins to rotate counterclockwise slowly, and when the snow is too much and the rebound supporting mechanism 4 works, the box cover 2 moves upward rapidly, because the gear 12 and the rack 13 are connected, when the gear 12 moves upward, it rapidly rotates clockwise under the action of the rack 13, when the gear 12 is separated from the rack 13 and reaches the position of the notch 14, under the action of inertia, the eccentric flywheel 15 rapidly rotates, thereby driving the sliding block 7 to slide up and down in the first slide rail 18, thereby driving the supporting frame 9 to rapidly slide up and down, driving the second magnet 10 to rapidly move up and down, and the first magnet 6 constantly approaches and moves away, because the first magnet 6 and the second magnet 10 attract each other, when the supporting frame 9 moves upward, the second magnet 10 moves upward, the second magnet 10 and the first magnet 6 are magnetically attracted, and the elastic cloth 5 is pulled downward, when the supporting frame 9 moves downward, the second magnet 10 moves downward and continues to pull the elastic cloth 5, when the pulling force of the second elastic cloth 5 on the first magnet 6 is greater than the attractive force of the second magnet 10 on the first magnet 6, the first magnet 6 is separated from the second magnet 10, and moves upward under the action of the elastic force of the elastic cloth 5, so that the elastic cloth 5 is rapidly and repeatedly pulled downward, and the snow is rapidly shaken off under the action of the elastic force of the elastic cloth 5.

[0047] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0048] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A low-voltage cable branch box, comprising a box body (1), characterized in that, The upper end of the box body (1) is slidably provided with a box cover (2), and the top of the box cover (2) is provided with two inclined surfaces (3) on both sides. A spring-loaded support mechanism (4) is provided between the box body (1) and the box cover (2). The spring-loaded support mechanism (4) includes: The first spring (41) has its upper end fixedly connected to the box cover (2) and its lower end fixedly connected to the box body (1). The damping mechanism includes a damping pad (42) fixed to the inner wall of the housing (1), a vertical plate (43) fixed to the inner side of the cover (2), a fixed seat (431) fixed to the vertical plate (43), a damping block (44) slidably disposed on the fixed seat (431), an iron block (441) fixed to the rear end of the damping block (44), a second spring (45) connected between the damping block (44) and the vertical plate (43), and an electromagnet (46) installed at the rear end of the fixed seat (431). The housing (1) is equipped with a cut-off switch (47) for cutting off the power supply of the electromagnet (46) at the upper part of the fixed seat (431), and the housing (1) is equipped with a power-on switch (48) for connecting the power supply of the electromagnet (46) at the lower part of the fixed seat (431). The slope surface (3) is provided with an opening (31), an elastic cloth (5) is fixed inside the opening (31), a first magnet (6) is fixed on the lower surface of the elastic cloth (5), a sliding block (7) is provided in the box cover (2) along the vertical direction, a third spring (8) is connected between the sliding block (7) and the top of the box cover (2), a support frame (9) is fixed on the sliding block (7), a second magnet (10) is fixed on the support frame (9) and is magnetically attracted to the first magnet (6), a rotating shaft (11) is provided for the sliding block (7), a gear (12) is fixed on the rotating shaft (11), a rack (13) is fixed on the box body (1), a notch (14) is provided at the upper end of the rack (13), and an eccentric flywheel (15) is fixed on the rotating shaft (11).

2. A low-voltage cable branch box according to claim 1, characterized in that: The cut-off switch (47) is provided with a buffer mechanism on its outer side. The buffer mechanism includes a spring air bag (16) disposed on the outer side of the cut-off switch (47). The side of the spring air bag (16) is provided with an exhaust hole (161).

3. A low-voltage cable branch box according to claim 2, characterized in that: The spring airbag (16) is provided with a fourth spring (17) inside. One end of the fourth spring (17) is fixedly connected to the box (1), and the other end of the fourth spring (17) is fixedly connected to the head of the spring airbag (16).

4. A low-voltage cable branch box according to claim 1, characterized in that: The inner wall of the box cover (2) is fixed with two first slide rails (18), and two sliding blocks (7) are slidably arranged inside the two first slide rails (18). The two ends of the rotating shaft (11) are respectively rotatably connected to the two sliding blocks (7).

5. A low-voltage cable branch box according to claim 1, characterized in that: The inner wall of the box cover (2) is fixed with a second slide rail (19), and the support frame (9) is slidably connected to the second slide rail (19).

6. A low-voltage cable branch box according to claim 1, characterized in that: The box cover (2) is fixed with a guide slide rod (20), the box body (1) is fixed with a guide ring (21), the lower end of the guide slide rod (20) passes through the guide ring (21), and the lower end of the guide slide rod (20) is integrally formed with a limit block (201).

7. A low-voltage cable branch box according to claim 1, characterized in that: The upper end of the box (1) is fixed with a triangular roof panel (101), and two drain outlets (102) are provided on both sides of the box (1) above the triangular roof panel (101).

8. A low-voltage cable branch box according to claim 7, characterized in that: The drain outlet (102) is fixed with a dustproof net (103).

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