A cable branch box multi-path fault current directing structure

Abstract

The present application relates to the technical field of cable branch box, especially to a kind of cable branch box multi-path fault current guiding structure, it includes branch box body, power wire frame, wire pressing unit, power unit and current detection control unit, power wire frame is provided with multiple, multiple power wire frame is installed in branch box body inside along the transverse direction of branch box body, power wire frame upper and lower sides are all provided with multi-line collection unit, multi-line collection unit is close to the multiple movable power connection end of power wire frame one end, and multi-line collection unit is composed of multiple electric wires.The present application can change the power connection end of multi-line collection unit and power wire frame by wire pressing unit, change the power connection end connected by power wire frame, quickly complete the replacement of the circuit connected by power wire frame, reduce the power-off time when maintaining, when replacing damaged cable, power cable is in normal power-on state.

Description

Technical Field

[0001] This invention relates to the technical field of cable branch boxes, and in particular to a multi-path fault current guiding structure for cable branch boxes. Background Technology

[0002] Smart grids integrate modern information technology, communication technology, automatic control technology and power systems to improve the efficiency, reliability and sustainability of the power grid. As the end execution unit of the smart grid, the reliability of the circuit breaker directly determines the power supply quality on the user side. In the circuit breaker structure, the outgoing port is the key interface connecting the internal conductive system of the circuit breaker and the external load conductor, and undertakes the core task of safely transmitting the protected current to the downstream line.

[0003] Currently, regardless of whether it is a screw-type, plug-in, or busbar-type connection method, each outgoing port of a traditional circuit breaker uses a single physical connection path.

[0004] However, in actual long-term operation, this single physical connection path will face a variety of failure risks, such as metal creep, oxidation corrosion, abnormal heating or mechanical vibration, which may lead to increased contact resistance or even permanent damage to the path. Once the path fails, it will cause a long-term power outage, which will seriously affect the reliability of power supply. In particular, in critical equipment, data centers or smart grid end nodes, the power outage problem caused by the failure of a single path at the outgoing port is particularly prominent. Summary of the Invention

[0005] To address the problem of requiring prolonged power outages for repairs after damage to the energized path, this invention provides a multi-path fault current guiding structure for cable branch boxes.

[0006] This invention provides a multi-path fault current guiding structure for a cable branch box, employing the following technical solution: including: Branch box.

[0007] Multiple power supply brackets are provided and installed inside the branch box along the horizontal direction. Multiple power supply brackets are provided on the upper and lower sides of the power supply brackets. The end of the multiple power supply bracket near the power supply bracket has multiple movable power terminals. The multiple power supply bracket is composed of multiple wires. The other end of the multiple power supply bracket on at least one side is electrically connected to the output port of the circuit breaker inside the branch box.

[0008] The wire pressing unit is provided in equal number to the power supply frame, and the wire pressing unit is installed in a one-to-one correspondence with the power supply frame.

[0009] The power unit is installed inside the branch box. The power unit controls the multiple terminals of the multi-line collection unit to alternately energize the power supply frame through the wire pressing unit.

[0010] It also includes a current detection and control unit, which is connected to the power unit. The current detection and control unit is set in a certain number of places and the power line frame is installed in a one-to-one correspondence with the power line frame.

[0011] Optionally, the power supply frame includes: An insulation covering unit is installed inside the branch box, and a wire pressing unit is installed outside the insulation covering unit.

[0012] It also includes conductive units, which are disposed inside the insulating covering unit. The conductive units are located at both ends of the insulating covering unit and are exposed. When the power receiving terminals of the multi-line assembly unit move, they can make contact with the exposed conductive units of the insulating covering unit.

[0013] Optionally, the insulation covering unit includes an insulation center column and two insulation discs. The two insulation discs are respectively installed at both ends of the insulation center column. The circumferential surface of the insulation discs has the same number of slots as the power connection terminals of the multi-line assembly unit. The wire pressing unit is installed on the outside of the insulation center column, and the insulation discs are installed inside the branch box.

[0014] The conductive unit includes a conductive center post, an insulating center post and an insulating disk, both of which are coaxially mounted on the outside of the conductive center post. Each slot contains a conductive plate, which passes through the insulating disk and connects to the conductive center post. The multiple terminals of the multi-line assembly unit correspond one-to-one with the positions of the slots. A current detection and control unit is installed on the outside of the insulating center post to detect the current of the conductive center post.

[0015] Optionally, the power connection terminal of the multi-line assembly unit is fitted with an insulating protective post, and an inner track groove plate is fitted on the outside of the insulating protective post. One end of the insulating protective post located inside the inner track groove plate is elastically connected to an adjacent insulating disk. The insulating protective post is set in a notch shape at the corresponding position of the slot, and the power connection terminal of the multi-line assembly unit is exposed at the notch position of the insulating protective post.

[0016] Optionally, the crimping unit includes: A torsion sleeve is coaxially rotatably sleeved on the outside of an insulating central column. Two inclined plates are connected to the outer ring surface of the torsion sleeve, and the two ends of the inclined plates are at different distances from the torsion sleeve.

[0017] The worm gear meshing assembly consists of a worm gear and a worm that mesh with each other. The worm gear part of the worm gear meshing assembly is coaxially mounted on the outside of the torsion sleeve, and the worm part of the worm gear meshing assembly is rotatably connected to the inner wall of the branch box.

[0018] It also includes a gear and toothed plate meshing assembly, which consists of meshing gears and toothed plates. The gear part of the gear and toothed plate meshing assembly is coaxially mounted with the worm part of the worm gear and worm meshing assembly. The toothed plate part of the gear and toothed plate meshing assembly is vertically arranged. A movable upright is vertically inserted into the lower end of the toothed plate part of the gear and toothed plate meshing assembly. The lower end of the upright is fixedly installed to the inner wall of the branch box.

[0019] Optionally, the power unit includes: The fixing block is located inside the branch box. It also includes a drive telescopic cylinder, which is vertically disposed inside the branch box and vertically installed through the inside of the fixed block.

[0020] Optionally, both the conductive plate and the slots are V-shaped, and the multiple slots on the outer side of the insulating disk are evenly distributed in a circumferential array around the axis of the insulating disk.

[0021] Optionally, the inclined plate and the torsion sleeve are elastically connected by an elastic telescopic rod, and the extension line of the elastic telescopic rod intersects the axis of the torsion sleeve perpendicularly.

[0022] Optionally, heat dissipation slots are provided at equal intervals on both sides of the branch box.

[0023] Optionally, multiple power supply racks can be installed at equal intervals inside the branch box.

[0024] In summary, the present invention has the following beneficial technical effects: 1. This invention utilizes the combined use of a power line frame, a multi-line aggregation unit, and a wire clamping unit. When a fault occurs in a group of line connections, the power unit changes the energizing terminals of the multi-line aggregation unit and the power line frame via the wire clamping unit, thereby changing the energizing terminals connected to the power line frame. This allows for rapid replacement of the circuits connected to the power line frame, reducing power outage time during maintenance. When replacing damaged cables, the energized cables remain in a normal energized state, ensuring the normal operation of the smart grid's power supply.

[0025] 2. In this invention, the V-shaped conductive plate and the inclined plate work together as a whole. The inclined plate pushes the insulating protective column into the V-shaped conductive plate as it rotates with the torsion sleeve. The contact end of the multi-line assembly unit inside the insulating protective column contacts the conductive plate. As the energizing time increases, when the contact end of the multi-line assembly unit deforms due to increased usage time or thermal expansion and contraction, the deformed contact end of the multi-line assembly unit continues to contact the inner side of the V-shaped conductive plate under the continuous pushing of the inclined plate, ensuring the stability of the energizing.

[0026] 3. By setting up an insulating center post, an insulating disk, and an insulating protective post, this invention reduces the exposed area of ​​the conductive center post, conductive plate, and the electrical connection terminals of the multi-line assembly unit, protects the conductive parts, reduces the risk of accidental contact by operators, and increases the ease of installation.

[0027] 4. This invention achieves an adaptive tight fit contact between the power terminals of the multi-line assembly unit driven by the V-shaped conductive plate and the inclined plate. Even if the power terminals are slightly deformed due to thermal expansion and contraction or long-term use, the continuous thrust of the inclined plate ensures that they are tightly fitted to the inner side of the V-shaped conductive plate, and the contact resistance is always maintained at a low level. Compared with traditional circuits where increased resistance due to loose contact and oxidation leads to energy waste, this design can control the fluctuation of contact resistance to a very small range, reduce energy loss, and improve energy saving effect. Attached Figure Description

[0028] Figure 1 This is a front view schematic diagram of the internal structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the branch box in an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the inclined plate and the elastic telescopic rod in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the multi-line aggregation unit in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the power line frame in an embodiment of the present invention; Figure 6 This is a top view schematic diagram of some structures in an embodiment of the present invention; Figure 7 This is a schematic diagram of the connection between the insulating protective column and the inner groove plate of the track in an embodiment of the present invention; Figure 8 This is an exploded view of part of the structure in an embodiment of the present invention.

[0029] Reference numerals: 1. Branch box; 2. Cable tray; 21. Insulation covering unit; 211. Insulation center column; 212. Insulation disc; 213. Slot; 22. Conductive unit; 221. Conductive center column; 222. Conductive plate; 3. Multi-line assembly unit; 31. Insulation protection column; 32. Track inner groove plate; 4. Wire pressing unit; 41. Torsion sleeve; 42. Inclined plate; 43. Worm gear meshing assembly; 44. Gear and tooth plate meshing assembly; 45. Vertical pole; 46. Elastic telescopic rod; 5. Power unit; 52. Fixing block; 53. Drive telescopic cylinder; 6. Current detection and control unit. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0031] This invention discloses a multi-path fault current guiding structure for a cable branch box. For example... Figures 1-2 As shown, it includes a branch box 1, a power supply frame 2, a wire pressing unit 4, a power unit 5, and a current detection and control unit 6.

[0032] Both sides of the branch box 1 are provided with heat dissipation slots that are evenly spaced. The heat dissipation slots allow the inside and outside of the branch box 1 to be connected, which can dissipate the heat generated inside the branch box 1 during operation and prevent the internal temperature of the branch box 1 from becoming too high.

[0033] Specifically, the branch box 1 can also be equipped with equally spaced outer shells. The outer shells can be disassembled and separated, and the wire rack 2 and the wire pressing unit 4 are installed inside the detachable outer shells.

[0034] Multiple power supply brackets 2 are provided and installed inside the branch box 1 along the horizontal direction. Multiple power supply brackets 2 are provided on the upper and lower sides of the power supply bracket 2. The multi-line collection unit 3 is provided on the upper side of the power supply bracket 2. The multi-line collection unit 3 has multiple movable power terminals near the end of the power supply bracket 2. The multi-line collection unit 3 is composed of multiple wires. The other end of at least one multi-line collection unit 3 is electrically connected to the output port of the circuit breaker inside the branch box 1.

[0035] In this embodiment, the multiple cables of the multi-line assembly unit 3 are connected in parallel to the ports of the circuit breaker on the outer side of the portion away from the power supply frame 2, and are covered with an insulating layer to increase the safety of power supply. The power receiving end of the multi-line assembly unit 3 is made of conductive material, and the multi-line assembly units 3 on both sides of the power supply frame 2 are connected to the power supply end and the power consumption end, respectively.

[0036] Multiple cable trays 2 are arranged at equal intervals inside the branch box 1. The equal-interval arrangement of the cable trays 2 facilitates the laying and installation of cables.

[0037] The number of wire pressing units 4 and the number of wire guiding frames 2 are equal, and the wire pressing units 4 and the wire guiding frames 2 are installed in a one-to-one correspondence.

[0038] The power unit 5 is installed inside the branch box 1. The power unit 5 controls the multiple terminals of the multi-line collection unit 3 to alternately energize the power supply frame 2 through the wire pressing unit 4.

[0039] The current detection control unit 6 is connected to the power unit 5. The current detection control unit 6 and the power line frame 2 are set in equal numbers, and the current detection control unit 6 and the power line frame 2 are installed in a one-to-one correspondence.

[0040] In this embodiment, as Figures 5-8 As shown, the power line frame 2 includes an insulation covering unit 21 and a conductive unit 22.

[0041] The insulation covering unit 21 is installed inside the branch box 1, and the wire pressing unit 4 is installed outside the insulation covering unit 21.

[0042] The conductive unit 22 is disposed inside the insulating covering unit 21. The conductive unit 22 is located at both ends of the insulating covering unit 21 and is exposed. When the power receiving end of the multi-line assembly unit 3 is active, it can make contact with the exposed conductive unit 22 of the insulating covering unit 21.

[0043] The insulation covering unit 21 includes an insulation center post 211 and two insulation disks 212. The two insulation disks 212 are respectively installed at both ends of the insulation center post 211. The circumferential surface of the insulation disks 212 has the same number of slots 213 as the power connection terminals of the multi-line collection unit 3. The wire pressing unit 4 is installed on the outside of the insulation center post 211, and the insulation disks 212 are installed inside the branch box 1.

[0044] In this embodiment, both the insulating center post 211 and the insulating disk 212 are made of insulating materials.

[0045] The conductive unit 22 includes a conductive center post 221, an insulating center post 211 and an insulating disk 212, both of which are coaxially mounted on the outside of the conductive center post 221. Each slot 213 has a conductive plate 222 installed inside it. The conductive plate 222 passes through the insulating disk 212 and is connected to the conductive center post 221. The multiple terminals of the multi-line collection unit 3 correspond one-to-one with the positions of the slots 213. The current detection control unit 6 is installed on the outside of the insulating center post 211 to detect the current of the conductive center post 221.

[0046] In this embodiment, both the conductive center post 221 and the conductive plate 222 are made of conductive materials, which can conduct current.

[0047] The power connection terminal of the multi-line assembly unit 3 is fitted with an insulating protective post 31. An inner groove plate 32 is fitted on the outside of the insulating protective post 31. One end of the insulating protective post 31 is elastically connected to the adjacent insulating disk 212 inside the inner groove plate 32. The insulating protective post 31 and the insulating disk 212 are connected by a straight spring, which pushes the insulating protective post 31 away from the axis of the insulating disk 212. The insulating protective post 31 is set in a notch shape at the corresponding position of the slot 213. The power connection terminal of the multi-line assembly unit 3 is exposed at the notch position of the insulating protective post 31.

[0048] The insulating center post 211, insulating disk 212 and insulating protective post 31 form a "full-wrap protection" for the conductive center post 221, conductive plate 222 and the connection terminal, which greatly reduces the exposed area of ​​conductive components and effectively suppresses leakage caused by air ionization and surface creepage. The reduction of leakage loss directly improves the power grid power supply efficiency, especially in long-distance power transmission or high humidity environments, the power saving effect is more significant.

[0049] In this embodiment, both the conductive plate 222 and the slot 213 are V-shaped. The narrow ends of the conductive plate 222 and the slot 213 are close to the axial side of the insulating disk 212. The multiple slots 213 opened on the outer side of the insulating disk 212 are evenly distributed in a circumferential array around the axial side of the insulating disk 212. The inner V-shaped side of the conductive plate 222 is located inside the inner V-shaped side of the corresponding slot 213. At the same time, the notch position of the insulating protective post 31 corresponds to the upper and lower positions of the slot 213, ensuring that when the insulating protective post 31 enters the inner side of the V-shaped conductive plate 222, the contact end on the inner side of the insulating protective post 31 contacts the inner side of the conductive plate 222 through the notch position of the insulating protective post 31. Furthermore, when the contact end of the multi-line assembly unit 3 deforms due to wear and thermal expansion and contraction, it contacts the inner side of the V-shaped conductive plate 222 at different widths to conduct electricity stably.

[0050] During use, the insulating protective post 31 drives the contact end of the multi-line assembly unit 3 into the inner V-shape of the conductive plate 222. Due to the V-shape, when the contact end inside the insulating protective post 31 deforms due to stress, increased usage time, and thermal expansion and contraction, the insulating protective post 31 continues to move towards the axis of the insulating disk 212, driving the contact end of the multi-line assembly unit 3 towards the narrow end of the V-shape of the conductive plate 222, so that the contact end of the multi-line assembly unit 3 continues to maintain stable contact with the conductive plate 222 for power supply.

[0051] In this embodiment, as Figures 3-4 As shown, the wire pressing unit 4 includes a torsion sleeve 41, a worm gear meshing assembly 43, and a gear tooth plate meshing assembly 44.

[0052] The torsion sleeve 41 is coaxially rotated and sleeved on the outside of the insulating center column 211. Two inclined plates 42 are connected to the outer ring surface of the torsion sleeve 41. The two ends of the inclined plates 42 are at different distances from the torsion sleeve 41. The inclined plates 42 and the torsion sleeve 41 are elastically connected by an elastic telescopic rod 46. The extension line of the elastic telescopic rod 46 intersects perpendicularly with the axis of the torsion sleeve 41. The elastic telescopic rod 46 pulls the inclined plates 42 closer to the insulating center column 211.

[0053] In this embodiment, the elasticity of the elastic telescopic rod 46 is greater than that of the straight spring, ensuring that the elastic telescopic rod 46 will not extend or retract when the inclined plate 42 can push the insulating protective post 31 to move towards the insulating disk 212. When the insulating protective post 31 can no longer move towards the axis of the insulating disk 212, the inclined plate 42 continues to rotate with the torsion sleeve 41. The elastic telescopic rod 46 stretches, allowing the inclined plate 42 to disengage from the multi-contact insulating protective post 31. The insulating protective post 31, in the disengaged state from the inclined plate 42, is pushed by the straight spring from the inside of the V-shaped conductive plate 222.

[0054] The V-shaped conductive plate 222 and the inclined plate 42 push the power receiving end of the multi-line assembly unit 3 to form an adaptive tight fit contact. Even if the power receiving end is slightly deformed due to thermal expansion and contraction or long-term use, the continuous pushing force of the inclined plate 42 still ensures that it is tightly attached to the inner side of the V-shaped conductive plate 222. The contact resistance is always maintained at a low level. Compared with the traditional circuit, which is wasted due to increased resistance caused by loose contact and oxidation, the power saving effect is improved.

[0055] The worm gear meshing assembly 43 consists of a worm gear and a worm that mesh with each other. The worm gear part of the worm gear meshing assembly 43 is coaxially mounted on the outside of the torsion sleeve 41, and the worm part of the worm gear meshing assembly 43 is rotatably connected to the inner wall of the branch box 1.

[0056] The gear and tooth plate meshing assembly 44 consists of meshing gears and tooth plates. The gear part of the gear and tooth plate meshing assembly 44 is coaxially mounted with the worm part of the worm gear meshing assembly 43. The tooth plate part of the gear and tooth plate meshing assembly 44 is vertically arranged. A movable upright rod 45 is vertically inserted into the lower end of the tooth plate part of the gear and tooth plate meshing assembly 44. The lower end of the upright rod 45 is fixedly installed to the inner wall of the branch box 1.

[0057] The power unit 5 includes a fixed block 52 and a drive telescopic cylinder 53.

[0058] Fixing block 52 is located inside branch box 1; It also includes a drive telescopic cylinder 53, which is vertically arranged inside the branch box 1 and vertically installed through the inside of the fixing block 52.

[0059] The drive telescopic cylinder 53 is vertically arranged inside the branch box 1 and is vertically installed through the inside of the fixed block 52. The drive telescopic cylinder 53 is preferably an electric telescopic cylinder, which can perform electric telescopic movement.

[0060] During use, when the current detection control unit 6 detects that the conductive center post 221 is de-energized, it controls the drive telescopic cylinder 53 to extend and retract a specific distance, pushing the toothed plate portion of the gear toothed plate meshing assembly 44 downward. Through the transmission of the worm gear meshing assembly 43, it drives the torsion sleeve 41 and the inclined plate 42. The inclined plate 42 disengages from the original insulating protection post 31 through the stretching elastic telescopic rod 46. Then, the inclined plate 42 applies a pushing force to the next insulating protection post 31 as it moves. Under the push of the inclined plate 42, the insulating protection post 31 moves to the inner side of the corresponding V-shaped conductive plate 222, so that the power connection terminal of the multi-line collection unit 3 without problems is energized through the corresponding notch of the insulating protection post 31 and the corresponding conductive plate 222. This quickly restores power to the power-off state caused by cable faults, prevents long-term power outages, and enables the repair and handling of faulty cables without affecting the power supply.

[0061] Simultaneously, when multiple current detection control units 6 detect a power failure, the drive telescopic cylinder 53 replaces multiple faulty cables, and after all cables are replaced, the control drive telescopic rod 53 is reset.

[0062] In this embodiment, the branch box 1 is equipped with sensors that monitor the internal temperature, humidity, condensation, harmful gases, cable joint temperature (infrared / fiber optic sensor), and partial discharge (PD, high frequency / ultrasonic sensor). By integrating multiple types of sensors, the data is transmitted to the final end to remotely observe the situation inside the branch box 1 and make intelligent adjustments.

[0063] The working principle is as follows: The power unit 5 controls one of the terminals of the multi-line assembly unit 3 to be energized with the power supply frame 2 through the wire pressing unit 4. When a fault occurs at the terminal of the multi-line assembly unit 3 that is in contact with both ends of the power supply frame 2, the power unit 5 controls the faulty terminal of the multi-line assembly unit 3 to be separated from the power supply frame 2 through the wire pressing unit 4, and then controls the other terminal of the multi-line assembly unit 3 to be energized with the power supply frame 2. This avoids long-term power outages. After replacing the terminal of the energized line, the power supply frame 2 can continue to be energized during the maintenance of the faulty energized line, ensuring the normal operation of the smart grid.

[0064] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-path fault current guiding structure for a cable branch box, characterized in that, include: Branch box (1); Multiple power supply frames (2) are provided. Multiple power supply frames (2) are installed inside the branch box (1) in the transverse direction. Multiple line collection units (3) are provided on both the upper and lower sides of the power supply frame (2). Multiple line collection units (3) are located near the end of the power supply frame (2) and have multiple movable electrical terminals. The multiple line collection unit (3) is composed of multiple wires. The other end of at least one of the multiple line collection units (3) is electrically connected to the output port of the circuit breaker inside the branch box (1). The wire pressing unit (4) is set in the same number as the power supply frame (2), and the wire pressing unit (4) and the power supply frame (2) are installed in a one-to-one correspondence; Power unit (5), which is installed inside the branch box (1), controls multiple terminals of the multi-line collection unit (3) to alternately energize the power supply frame (2) through the wire pressing unit (4); It also includes a current detection control unit (6), which is connected to the power unit (5) for control. The current detection control unit (6) and the power line frame (2) are set in equal numbers, and the current detection control unit (6) and the power line frame (2) are installed in a one-to-one correspondence.

2. The multi-path fault current guiding structure for a cable branch box according to claim 1, characterized in that: The power supply frame (2) includes: An insulating covering unit (21) is installed inside the branch box (1), and a wire pressing unit (4) is installed outside the insulating covering unit (21). It also includes a conductive unit (22), which is disposed inside the insulating covering unit (21). The conductive unit (22) is located at both ends of the insulating covering unit (21) and is exposed. When the power connection terminal of the multi-line assembly unit (3) moves, it can make contact with the exposed conductive unit (22) of the insulating covering unit (21).

3. The multi-path fault current guiding structure for a cable branch box according to claim 2, characterized in that: The insulation covering unit (21) includes an insulation center column (211) and two insulation discs (212). The two insulation discs (212) are respectively installed at both ends of the insulation center column (211). The circumferential surface of the insulation discs (212) has the same number of slots (213) as the power connection terminals of the multi-line assembly unit (3). The wire pressing unit (4) is installed on the outside of the insulation center column (211), and the insulation discs (212) are installed inside the branch box (1). The conductive unit (22) includes a conductive center post (221), an insulating center post (211) and an insulating disk (212) are coaxially mounted on the outside of the conductive center post (221), and a conductive plate (222) is installed inside each slot (213). The conductive plate (222) passes through the insulating disk (212) and is connected to the conductive center post (221). The multiple terminals of the multi-line collection unit (3) correspond one-to-one with the positions of the slots (213). The current detection control unit (6) is installed on the outside of the insulating center post (211) to detect the current of the conductive center post (221).

4. The multi-path fault current guiding structure for a cable branch box according to claim 3, characterized in that: The power connection end of the multi-line assembly unit (3) is fitted with an insulating protective post (31), and an inner track groove plate (32) is fitted on the outside of the insulating protective post (31). One end of the insulating protective post (31) located inside the inner track groove plate (32) is elastically connected to the adjacent insulating disk (212). The insulating protective post (31) is set in a notch shape at the corresponding position of the slot (213). The power connection end of the multi-line assembly unit (3) is exposed at the notch position of the insulating protective post (31).

5. A multi-path fault current guiding structure for a cable branch box according to claim 4, characterized in that: The crimping unit (4) includes: A torsion sleeve (41) is coaxially rotated and sleeved on the outside of an insulating central column (211). Two inclined plates (42) are connected to the outer ring surface of the torsion sleeve (41). The two ends of the inclined plates (42) are at different distances from the torsion sleeve (41) to which they are connected. The worm gear meshing assembly (43) consists of a worm wheel and a worm that mesh with each other. The worm wheel part of the worm gear meshing assembly (43) is coaxially installed on the outside of the torsion sleeve (41), and the worm part of the worm gear meshing assembly (43) is rotatably connected to the inner wall of the branch box (1). It also includes a gear and tooth plate meshing assembly (44), which is composed of meshing gears and tooth plates. The gear part of the gear and tooth plate meshing assembly (44) is coaxially installed with the worm part of the worm gear meshing assembly (43). The tooth plate part of the gear and tooth plate meshing assembly (44) is vertically arranged. A movable upright rod (45) is vertically inserted into the lower end of the tooth plate part of the gear and tooth plate meshing assembly (44). The lower end of the upright rod (45) is fixedly installed to the inner wall of the branch box (1).

6. The multi-path fault current guiding structure for a cable branch box according to claim 5, characterized in that: The power unit (5) includes: Fixing block (52), the fixing block (52) is located inside the branch box (1); It also includes a drive telescopic cylinder (53), which is vertically arranged inside the branch box (1) and vertically installed through the inside of the fixed block (52).

7. A multi-path fault current guiding structure for a cable branch box according to claim 3, characterized in that: The conductive plate (222) and the slot (213) are both V-shaped. The multiple slots (213) on the outside of the insulating disk (212) are evenly distributed in a circular array around the axis of the insulating disk (212).

8. A multi-path fault current guiding structure for a cable branch box according to claim 5, characterized in that: The inclined plate (42) and the torsion sleeve (41) are elastically connected by an elastic telescopic rod (46), and the extension line of the elastic telescopic rod (46) intersects the axis of the torsion sleeve (41) perpendicularly.

9. A multi-path fault current guiding structure for a cable branch box according to claim 1, characterized in that: The branch box (1) has heat dissipation slots arranged at equal intervals on both sides.

10. A multi-path fault current guiding structure for a cable branch box according to claim 1, characterized in that: Multiple power line brackets (2) are set at equal intervals inside the branch box (1).

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