A cable branch box

Abstract

The present invention relates to the field of cable branching technology, and in particular to a cable branching box, comprising a box body, an outer wall of the box body being rotatably connected to a box door, a side of the box body away from the box door being fixedly connected to a radiator, and also comprising a deformation installation and removal mechanism and an accelerated discharge mechanism. By setting up the deformation installation and removal mechanism, the present invention enables the protective plate to be not only simply and quickly disassembled and installed, but also to be changed in position and used as an auxiliary workbench. The staff can use a first pull rope to clamp or release the telescopic block and two clamping blocks, and follow the trajectory of the slide groove to simplify the operation process of replacing the protective plate. When the protective plate is rotated, the rotating rod can rotate in the circular groove of the slide groove, so that the protective plate is changed from a vertical protection state to a horizontal placement state, which is convenient for placing tools and parts boxes required for disassembling the copper busbar on the protective plate, assisting the staff in replacement and repair work, thereby improving the staff's maintenance efficiency of the cable branch box.

Description

Technical Field

[0001] The present invention relates to the technical field of cable branching, and in particular to a cable branching box. Background Art

[0002] The main function of the cable branch box is to distribute the power of the main cable to multiple branch cables to realize the division and transmission of power. It has the function of switching connection and can flexibly connect different lines to facilitate the expansion and adjustment of the power system. Through the cable branch box, the faulty line can be effectively isolated, reducing the impact of the fault on other lines and improving the stability and reliability of the power system. In addition, the cable branch box also has the function of protecting the cable, reducing the damage to the cable caused by external factors, and providing a safe maintenance environment for daily inspection and management.

[0003] In the prior art, branch cables are usually connected through copper bars and switches. In order to prevent workers from accidentally touching the copper bars, transparent protective covers are usually installed on the outside of the copper bars. These covers are usually fixed by bolts. When the insulation layer on the surface of the copper bars is aged and needs to be replaced, the bolts of the covers must be removed in turn before the copper bars can be removed. The operation is relatively cumbersome. Secondly, different tools are also required for the maintenance of other electrical components. Due to the wide variety of tools in the tool kit, the process of finding a specific tool is often not convenient and efficient, which reduces the maintenance rate of the cable branch box.

[0004] In addition, before replacing the copper busbar, you must first turn off the main power supply to ensure safety. Next, you need to wait for the static electricity on the surface of the copper busbar to be completely released, and then use a test pen to detect whether the copper busbar is charged. Only when it is confirmed that there is no charge can the copper busbar be safely replaced. This process is time-consuming, resulting in a slower replacement speed. If the test pen fails, the copper busbar that automatically releases the charge may still retain some static electricity, which increases the risk of electric shock for workers and poses certain safety hazards.

[0005] In view of this, the present invention proposes a cable branch box. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a cable branch box.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a cable branch box, comprising a box body, the outer wall of the box body is rotatably connected to a box door, a side of the box body away from the box door is fixedly connected to a radiator, and also includes a deformation installation and removal mechanism and an accelerated discharge mechanism;

[0008] The deformation installation and removal mechanism includes a pair of mounting blocks fixedly connected to the middle of the box body, a pair of mounting blocks are provided with a slide groove on one side close to each other, a rotating rod is slidably connected in the slide groove, a protective plate is fixedly connected to the middle of the rotating rod, a plurality of vent holes are provided on the upper and lower sides of the protective plate, the slide groove is used to install and remove the protective plate, the bottom edge of the slide groove is set as a circular groove matching the size of the rotating rod, and the top edge of the slide groove is inclined relative to the mounting block;

[0009] The accelerated discharge mechanism includes a second pull rope detachably connected to the bottom of the protective plate, the second pull rope slides through a rotating plate on the side away from the protective plate, the second pull rope is fixedly connected to the secondary switch at one end away from the protective plate, the rotating plate is rotatably connected to the outer wall of the secondary switch on the side away from the second pull rope, a second spring is fixedly connected to the top of the rotating plate, the second spring is fixedly connected to the outer wall of the secondary switch at one end away from the rotating plate, a push block for wiring is provided on the inner wall of the rotating plate, the outer wall of the push block is slidably connected to the bottom of the secondary switch, and the second pull rope stretches and rotates the rotating plate to squeeze the push block in linkage.

[0010] Preferably, the deformation and installation mechanism also includes a pair of telescopic blocks slidably connected to the top of the protective plate, the sides of the telescopic blocks close to each other are fixedly connected to the first spring, the sides of the two first springs close to each other are fixedly connected to the inner wall of the protective plate, the centers of the telescopic blocks close to each other are fixedly connected to the first pull ropes, the sides of the two first pull ropes close to each other slide through the inner wall of the protective plate, and the ends of the first pull ropes close to each other are commonly fixedly connected to a handle.

[0011] Preferably, the deformation and installation mechanism also includes a first clamping block fixedly connected to the inner walls on both sides of the box body, the first clamping block is slidably clamped to the outer wall of the telescopic block, and a pair of fixed blocks and a pair of second clamping blocks are fixedly connected in sequence to the inner wall of the box body near the edge, the fixed block and the middle of the slide groove are on the same axis, and the center of the second clamping block is located above the fixed block.

[0012] Preferably, the accelerated discharge mechanism also includes an E-shaped block slidably connected to the bottom of the secondary switch, a pair of fixing rings are fixedly connected to the bottom of the E-shaped block, a branch grounding wire is rotatably connected to the middle part of the pair of fixing rings, three branch grounding wires are provided, and the bottoms of the three branch grounding wires are commonly connected to a main grounding wire, and one end of the main grounding wire away from the branch grounding wire is fixedly connected to a grounding terminal, and the grounding terminal is fixedly connected to the bottom of the box.

[0013] Preferably, the accelerated discharge mechanism also includes a metal joint fixedly connected to the top end of the branch grounding wire, the tops of the three branch grounding wires all slide through the top of the E-shaped block, a third spring is fixedly connected to the side of the metal joint close to the branch grounding wire, the side of the third spring away from the metal joint is fixedly connected to the outer wall of the E-shaped block, and the third spring is sleeved on the outer wall of the branch grounding wire.

[0014] Preferably, the accelerated discharge mechanism also includes a pulley frictionally connected to the middle wall of the second pull rope, the outer wall of the pulley is rotatably connected to a pair of connecting plates, the side of the pair of connecting plates away from the pulley is fixedly connected to the inner wall of the box, the outer walls of the secondary switch and the main switch are fixedly connected to a support frame, and the outer wall of the support frame is fixedly connected to the inner wall of the box.

[0015] Preferably, three copper bars are equidistantly and detachably connected to the bottom of the secondary switch, and the metal joint is located between the E-shaped block and the copper bars.

[0016] Preferably, the first clamping block and the second clamping block are at the same distance from the rotating rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting up a deformation installation and removal mechanism, the protective plate can not only be disassembled and installed simply and quickly, but also can be changed to be used as an auxiliary workbench. The staff can use the first pull rope to clamp or release the telescopic block and the two clamping blocks. The bottom of the slide is designed to be a circular groove, and the top is designed to be an inclined groove. Following the track of the slide, the rotating rod and the protective plate can be easily slid out or in, thereby simplifying the operation process of replacing the protective plate. When the protective plate is rotated, the rotating rod can be rotated in the circular groove of the slide, so that the protective plate is changed from a vertical protection state to a horizontal placement state. In this way, it is convenient to place the tools and parts boxes required for disassembling the copper busbar on the protective plate, which is clear at a glance, and assists the staff in replacement and maintenance work, thereby improving the maintenance efficiency of the cable branch box by the staff;

[0019] 2. When replacing the copper busbar, by setting up the accelerated discharge mechanism, when the protective plate is rotated, the rotation displacement of the protective plate can drive the second pull rope to stretch a certain distance. Subsequently, the stretching action of the second pull rope causes the rotating plate to rotate, and finally the E-shaped block is squeezed by the movement of the rotating plate. This series of actions enables the metal joint of the branch grounding wire to fit the copper busbar, accelerates the introduction of the charge on the copper busbar into the ground, realizes the rapid release of static electricity, avoids the risk of electric shock that may occur when the staff directly touches the copper busbar, and significantly reduces safety hazards;

[0020] 3. Through the reasonable design of the third spring, it is sleeved on the outer wall of the branch grounding wire. When the metal joint fits the copper busbar, the third spring is deformed under the action of the E-shaped block, providing thrust for the side of the metal joint away from the copper busbar. This design enables the metal joint to have a certain degree of adaptability and always fits closely to the copper busbar, ensuring the electrical connection quality of the contact point, thereby improving the reliability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a cable branch box of the present invention;

[0022] Figure 2 It is a schematic diagram of a three-dimensional structure of a cable branch box in a side view of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal three-dimensional structure of a cable branch box of the present invention;

[0024] Figure 4 It is a partial three-dimensional cross-sectional view of a protective plate of a cable branch box of the present invention;

[0025] Figure 5 A cable branch box according to the present invention Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 A cable branch box according to the present invention Figure 4 Enlarged view of point B in the middle;

[0027] Figure 7 This is a three-dimensional cross-sectional view of a cable branch box of the present invention;

[0028] Figure 8 It is a structural schematic diagram of a cable branch box rotating plate connection of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a branch grounding wire connection of a cable branch box of the present invention;

[0030] Fig.10 The present invention is a structural schematic diagram of a metal joint connection of a cable branch box.

[0031] In the figure: 1. box body; 2. box door; 3. radiator; 4. main switch; 5. secondary switch; 6. protective plate; 7. first clamping block; 8. mounting block; 9. handle; 10. first pull rope; 11. second pull rope; 12. second clamping block; 13. fixing block; 14. rotating rod; 15. slide groove; 16. pulley; 17. telescopic block; 18. first spring; 19. vent; 20. grounding terminal; 21. main grounding wire; 22. copper busbar; 23. support frame; 24. connecting plate; 25. branch grounding wire; 26. rotating plate; 27. second spring; 28. E-shaped block; 29. ​​fixing ring; 30. push block; 31. third spring; 32. metal joint. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0033] like Figure 1-Figure 10 A cable branch box is shown, comprising a box body 1, the outer wall of which is rotatably connected to a box door 2, a radiator 3 is fixedly connected to the side of the box body 1 away from the box door 2, and also includes a deformation installation and removal mechanism and an accelerated discharge mechanism; the box door 2 and the radiator 3 are both existing technologies and will not be elaborated here.

[0034] like Figure 4-Figure 5 The deformation installation mechanism includes a pair of mounting blocks 8 fixedly connected to the middle of the box body 1, and a slide groove 15 is provided on the side of the pair of mounting blocks 8 close to each other. A rotating rod 14 is slidably connected in the slide groove 15, and a protective plate 6 is fixedly connected to the middle of the rotating rod 14. A plurality of vents 19 are provided on the upper and lower sides of the protective plate 6. The slide groove 15 is used to install and remove the protective plate 6. The bottom edge of the slide groove 15 is set as a circular groove matching the size of the rotating rod 14, and the top edge of the slide groove 15 is inclined relative to the mounting block 8; the top inclined groove of the slide groove 15 is connected to the outside world, which is convenient for removing or installing the rotating rod 14 and the protective plate 6.

[0035] like Fig. 9The accelerating discharge mechanism includes a second pull rope 11 detachably connected to the bottom of the protective plate 6, the second pull rope 11 slides through a rotating plate 26 on the side away from the protective plate 6, the second pull rope 11 is fixedly connected to the secondary switch 5 on one end away from the protective plate 6, the rotating plate 26 is rotatably connected to the outer wall of the secondary switch 5 on the side away from the second pull rope 11, the top of the rotating plate 26 is fixedly connected to a second spring 27, the second spring 27 is fixedly connected to the outer wall of the secondary switch 5 on one end away from the rotating plate 26, the inner wall of the rotating plate 26 is provided with a push block 30 for wiring, the outer wall of the push block 30 is slidably connected to the bottom of the secondary switch 5, the second pull rope 11 stretches and rotates the rotating plate 26, and the push block 30 is squeezed and linked. The push block 30 slides and rotates on the inner wall of the rotating plate 26, and the push block 30 is moved by the squeezing force when the rotating plate 26 rotates.

[0036] like Figure 4 , Figure 6 The deformation installation mechanism also includes a pair of telescopic blocks 17 slidably connected to the top of the protective plate 6. The first springs 18 are fixedly connected to the sides of the telescopic blocks 17 that are close to each other. The two first springs 18 are fixedly connected to the inner wall of the protective plate 6. The first pull ropes 10 are fixedly connected to the center of the sides of the telescopic blocks 17 that are close to each other. The two first pull ropes 10 slide through the inner wall of the protective plate 6 on the sides close to each other. The ends of the first pull ropes 10 that are close to each other are fixedly connected to the handle 9. The deformation installation mechanism also includes a first clamping block 7 fixedly connected to the inner walls of both sides of the box body 1. The first clamping block 7 is slidably clamped to the outer wall of the telescopic block 17. A pair of fixed blocks 13 and a pair of second clamping blocks 12 are fixedly connected to the inner wall of the box body 1 near the edge. The fixed block 13 is on the same axis as the middle of the slide slot 15, and the center of the second clamping block 12 is located above the fixed block 13. The first clamping block 7 and the second clamping block 12 are the same length from the rotating rod 14. The staff can use the first pull rope 10 to clamp or unclamp the telescopic block 17 and the two clamping blocks, and can easily slide the rotating rod 14 and the protective plate 6 out or in along the track of the slide groove 15, thereby simplifying the operation process of replacing the protective plate 6.

[0037] like Figure 8-Figure 10The accelerating discharge mechanism also includes an E-shaped block 28 slidably connected to the bottom of the secondary switch 5. A pair of fixing rings 29 are fixedly connected to the bottom of the E-shaped block 28. The middle of the pair of fixing rings 29 is rotatably connected to the branch grounding wire 25. There are three branch grounding wires 25. The bottoms of the three branch grounding wires 25 are commonly connected to the main grounding wire 21. The end of the main grounding wire 21 away from the branch grounding wire 25 is fixedly connected to the grounding terminal 20. The grounding terminal 20 is fixedly connected to the bottom of the box 1. The accelerating discharge mechanism also includes a metal joint 32 fixedly connected to the top end of the branch grounding wire 25. The tops of the three branch grounding wires 25 all slide through the top of the E-shaped block 28. The side of the metal joint 32 close to the branch grounding wire 25 is fixedly connected to the third spring 31. The side of the third spring 31 away from the metal joint 32 is fixedly connected to the outer wall of the E-shaped block 28. The third spring 31 is sleeved on the outer wall of the branch grounding wire 25. Three copper bars 22 are equidistantly and detachably connected at the bottom of the secondary switch 5, and the metal joint 32 is located between the E-shaped block 28 and the copper bar 22. The rotation displacement of the protective plate 6 can drive the second pull rope 11 to stretch a certain distance, and the stretching action of the second pull rope 11 causes the rotating plate 26 to rotate, and finally the E-shaped block 28 is squeezed by the movement of the rotating plate 26, so that the metal joint 32 of the branch grounding wire 25 can fit the copper bar 22, accelerating the release of static electricity.

[0038] like Figure 3 , Figure 6 The accelerating discharge mechanism also includes a pulley 16 frictionally connected to the middle wall of the second pull rope 11, the outer wall of the pulley 16 is rotatably connected to a pair of connecting plates 24, and the side of the pair of connecting plates 24 away from the pulley 16 is fixedly connected to the inner wall of the box 1, and the outer walls of the secondary switch 5 and the main switch 4 are fixedly connected to the support frame 23, and the outer wall of the support frame 23 is fixedly connected to the inner wall of the box 1. Steering and positioning are performed through the pulley 16 to prevent obstruction of the installation of other switches.

[0039] Working principle: when it is necessary to install and remove the protective plate 6, the staff can pull the handle 9 by hand, and the handle 9 moves outward under the action of tension, and at the same time pull the first pull ropes 10 on both sides, and then stretch the telescopic blocks 17 on both sides through the first pull ropes 10, so that the telescopic blocks 17 shrink inward and squeeze the first springs 18. At this time, the telescopic blocks 17 shrink to the inner wall of the protective plate 6, that is, the telescopic blocks 17 are separated from the clamping of the first clamping block 7. After there is no limit clamping at the top of the protective plate 6, the protective plate 6 can slide into the slide groove 15 opened on the installation block 8 through the rotating rod 14. At this time, the second pull rope 11 at the bottom of the protective plate 6 can be removed, and then, since the inclined groove at the top of the slide groove 15 is connected to the outside world, the staff can slide the rotating rod 14 and the protective plate 6 out of the slide groove 15 along the trajectory of the slide groove 15, and then reverse the operation of the new protective plate 6 and reset it according to the original trajectory, so as to achieve simple and fast disassembly and installation, and improve maintenance efficiency;

[0040] Furthermore, when the insulating sleeve outside the copper busbar 22 is aged and damaged and needs to be replaced, the staff can deform the protective plate 6, and similarly pull the handle 9 to release the limit of the telescopic block 17 on the protective plate 6. The protective plate 6 can be rotated in the circular groove of the slide slot 15 through the rotating rod 14. The staff will rotate the protective plate 6 to make it flat, so that the protective plate 6 fits the support of the fixed block 13. At this time, the staff can relax the pulling force on the handle 9, and push the telescopic block 17 outward through the elastic force of the first spring 18 to be clamped to the limit in the second clamping block 12. At the same time, the first pull rope 10 is also stretched and reset by the telescopic block 17 for the next use. At this time, the protective plate 6 has changed from a vertical protection state to a horizontal placement state, and can be used as a workbench, which is convenient for placing tools and parts boxes for disassembling the copper busbar 22 on the protective plate 6, which is clear at a glance and assists the staff in replacement and maintenance work;

[0041] Furthermore, before replacing the copper bus 22, the main switch 4 needs to be turned off. Then, in the process of changing the protective plate 6 from a vertical state to a horizontal state, because the second pull rope 11 is always connected to the bottom of the protective plate 6, the second pull rope 11 can be stretched toward the protective plate 6 for a distance when the protective plate 6 rotates. The second pull rope 11 is turned and positioned by the pulley 16 to prevent obstruction of the installation of other switches. When the second pull rope 11 is stretched toward the protective plate 6, the second pull rope 11 is in a straight state at this time, and the other end is connected to the secondary switch 5, so the rotating plate 26 can be driven to approach the secondary switch 5, that is, the rotating plate 26 rotates, and the rotating plate 26 will squeeze the second spring 27 and the push block 30 at the same time when it rotates. After the push block 30 is squeezed, it moves toward the direction of the copper bus 22 and squeezes the E-shaped block 28. The E-shaped block 28 drives the branch grounding wire 25 to move toward the direction of the copper bus 22, and finally makes the metal joint 32 fit with the copper bus 22, and introduces the charge on the surface of the copper bus 22 into the branch grounding wire 25 and releases it quickly. The elastic force of the third spring 31 ensures that the metal joint 32 fits tightly with the copper bus 22 to prevent loosening. The three branch grounding wires 25 gather the charge of the copper bus 22 together in the main grounding wire 21, and finally guide the static electricity to the grounding terminal 20 through the main grounding wire 21 and release it to the ground, thereby accelerating the release of static electricity on the surface of the copper bus 22 and ensuring that the staff is safer when replacing the copper bus 22 to prevent accidental electric shock.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A cable branch box, comprising a box body (1), characterized in that: The outer wall of the box body (1) is rotatably connected to a box door (2), a side of the box body (1) away from the box door (2) is fixedly connected to a heat sink (3), and further comprises a deformation installation and removal mechanism and an accelerated discharge mechanism; The deformation installation and removal mechanism comprises a pair of mounting blocks (8) fixedly connected to the middle of the box body (1), a slide groove (15) is provided on the side of the pair of mounting blocks (8) close to each other, a rotating rod (14) is slidably connected in the slide groove (15), a protective plate (6) is fixedly connected to the middle of the rotating rod (14), a plurality of ventilation holes (19) are provided on the upper and lower sides of the protective plate (6), the slide groove (15) is used for installing and removing the protective plate (6), the bottom edge of the slide groove (15) is set as a circular groove matching the size of the rotating rod (14), and the top edge of the slide groove (15) is inclined relative to the mounting block (8); The accelerated discharge mechanism comprises a second pull rope (11) detachably connected to the bottom of the protective plate (6); a side of the second pull rope (11) away from the protective plate (6) slides through a rotating plate (26); an end of the second pull rope (11) away from the protective plate (6) is fixedly connected to a secondary switch (5); a side of the rotating plate (26) away from the second pull rope (11) is rotatably connected to the outer wall of the secondary switch (5); a second spring (27) is fixedly connected to the top of the rotating plate (26); an end of the second spring (27) away from the rotating plate (26) is fixedly connected to the outer wall of the secondary switch (5); a push block (30) for wiring is provided on the inner wall of the rotating plate (26); the outer wall of the push block (30) is slidably connected to the bottom of the secondary switch (5); the second pull rope (11) stretches and rotates the rotating plate (26) to squeeze the push block (30) in linkage; The accelerated discharge mechanism further comprises an E-shaped block (28) slidably connected to the bottom of the secondary switch (5), a pair of fixing rings (29) being fixedly connected to the bottom of the E-shaped block (28), a branch grounding wire (25) being rotatably connected to the middle of the pair of fixing rings (29), and three branch grounding wires (25) are provided; The accelerating discharge mechanism also includes a metal joint (32) fixedly connected to the top end of the branch grounding wire (25), and the tops of the three branch grounding wires (25) are all slidably penetrated through the top of the E-shaped block (28); The bottom of the secondary switch (5) is equidistantly and detachably connected with three copper bars (22), and the metal joint (32) is located between the E-shaped block (28) and the copper bars (22).

2. A cable branch box according to claim 1, characterized in that: The deformation installation mechanism also includes a pair of telescopic blocks (17) slidably connected to the top of the protective plate (6); the sides of the pair of telescopic blocks (17) close to each other are fixedly connected to a first spring (18); the sides of the two first springs (18) close to each other are fixedly connected to the inner wall of the protective plate (6); the centers of the sides of the telescopic blocks (17) close to each other are fixedly connected to a first pull rope (10); the sides of the two first pull ropes (10) close to each other are slidably penetrated through the inner wall of the protective plate (6); and the ends of the first pull ropes (10) close to each other are fixedly connected to a handle (9).

3. A cable branch box according to claim 1, characterized in that: The deformation installation mechanism also includes a first clamping block (7) fixedly connected to the inner walls on both sides of the box body (1), the first clamping block (7) is slidably clamped to the outer wall of the telescopic block (17), and a pair of fixed blocks (13) and a pair of second clamping blocks (12) are fixedly connected in sequence near the edge of the inner wall of the box body (1), the fixed block (13) and the middle part of the slide groove (15) are on the same axis, and the center of the second clamping block (12) is located above the fixed block (13).

4. A cable branch box according to claim 1, characterized in that: The bottoms of the three branch grounding wires (25) are commonly connected to a main grounding wire (21); one end of the main grounding wire (21) away from the branch grounding wires (25) is fixedly connected to a grounding terminal (20); and the grounding terminal (20) is fixedly connected to the bottom of the box (1).

5. A cable branch box according to claim 4, characterized in that: A third spring (31) is fixedly connected to a side of the metal joint (32) close to the branch grounding wire (25), and a side of the third spring (31) away from the metal joint (32) is fixedly connected to an outer wall of the E-shaped block (28). The third spring (31) is sleeved on the outer wall of the branch grounding wire (25).

6. A cable branch box according to claim 1, characterized in that: The accelerated discharge mechanism further comprises a pulley (16) frictionally connected to the middle wall of the second pull rope (11); the outer wall of the pulley (16) is rotatably connected to a pair of connecting plates (24); the side of the pair of connecting plates (24) away from the pulley (16) is fixedly connected to the inner wall of the box (1); the outer walls of the secondary switch (5) and the main switch (4) are both fixedly connected to a support frame (23); the outer wall of the support frame (23) is fixedly connected to the inner wall of the box (1).

7. A cable branch box according to claim 3, characterized in that: The first clamping block (7) and the second clamping block (12) are at the same length from the rotating rod (14).

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