A cable installation device based on a ring main unit

Abstract

The application discloses a cable installation device based on a ring net cabinet, and relates to the technical field of cable installation.The device comprises an installation table, which is arranged on the top of the ground;an installation rod, which is fixedly arranged on the front and back walls of the installation table;an air core rod, which is rotatably arranged on the circumferential surface of the installation rod;an electric cable sleeve, which is fixedly arranged on the circumferential surface of the air core rod, and the circumferential surface of the electric cable sleeve is provided with an electric cable;an L-shaped frame, which is fixedly arranged on the top of the installation table;an electric servo motor, which is fixedly arranged on the top of the L-shaped frame;a lead screw, which is fixedly arranged on the output end of the electric servo motor;an installation plate, which is slidably arranged on the inner wall of the L-shaped frame;and a fastening frame, which is adapted to move downwards to fasten the electric cable.The self-adaptive adjustment of the fastening frame can make the electric cable pay-off more stable and smooth, and can avoid problems such as knotting or rebounding caused by the relaxation of the electric cable.

Description

Technical Field

[0001] This invention relates to the field of cable installation technology, specifically to a cable installation device based on a ring main unit. Background Technology

[0002] A cable installation device based on a ring main unit typically consists of a mounting platform, cable conduit, mounting rod, and drive equipment.

[0003] Patent publication number CN219697154U relates to a cable installation device, belonging to the field of cable installation technology. It includes a second mounting fastening plate. A rotating shaft is fixedly installed on the top outer wall of the left side of the second mounting fastening plate. A first mounting fastening plate is movably installed on the top outer wall of the rotating shaft. A threaded rotating rod is movably installed on the inner wall of the top middle section of the first mounting fastening plate. A cable fixing knob is fixedly installed on the outer wall of the top of the threaded rotating rod, located on the top outer wall of the first mounting fastening plate. A movable plate is movably installed on the threaded outer wall of the threaded rotating rod. Connecting rods are fixedly installed on the bottom two outer walls of the movable plate. This patent achieves long-term stability of the fastened cable by simultaneously rotating the knobs on both the first and second mounting fastening plates, causing the threaded rotating rod to rotate. This, in turn, causes the movable plate to move the cable fixing plate on the connecting rod, compressing and fixing the cable.

[0004] In the aforementioned patent, rotating the knobs on both the first and second mounting fastening plates simultaneously causes the threaded rod to rotate, thereby moving the cable fixing plate on the connecting rod via the movable plate. This compresses and fixes the cable, ensuring its stability over a long period. However, it is difficult to prevent over-tightening of the cable during installation. Over-tightening leads to greater friction during cable installation. Increased friction causes uneven stress on the cable and reduces installation efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a cable installation device based on a ring main unit, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable installation device based on a ring main unit, comprising: an installation platform, the installation platform being disposed on the top of the ground; an installation rod, the installation rod being fixedly installed on the front and rear walls of the installation platform; a hollow rod, the hollow rod being rotatably installed on the circumferential surface of the installation rod; a cable sleeve, the cable sleeve being fixedly installed on the circumferential surface of the hollow rod, and a cable being disposed on the circumferential surface of the cable sleeve; an L-shaped frame, the L-shaped frame being fixedly installed on the top of the installation platform; a servo motor, the servo motor being fixedly installed on the top of the L-shaped frame; a lead screw, the lead screw being fixedly installed on the output end of the servo motor; and a mounting plate, the mounting plate being slidable. The following components are installed on the inner wall of the L-shaped frame: a mounting plate connected to a lead screw, used to support the cable; a mounting tube fixedly installed on the top of the mounting plate, used to guide the cable; a mounting hole on the circumference of the mounting tube; a protective rod fixedly installed on the top of the mounting plate; a protective groove on the circumference of the protective rod; a fastening frame slidably installed on the circumference of the protective rod; and an elastic telescopic plate fixedly installed on the rear side of the fastening frame, which moves downwards to adaptively fasten the cable.

[0007] According to the above technical solution, a linkage block is fixedly installed on the circumferential surface of the hollow rod, an elastic telescopic block is fixedly installed on the top of the fastening frame, and a spring is provided between the mounting plate and the fastening frame. When the fastening frame moves upward, it drags the spring. The spring deforms and stores force under the drag of the fastening frame. The fastening frame moves downward under the reaction force of the spring. The spring can drive the fastening frame to reset.

[0008] According to the above technical solution, the free end of the elastic telescopic block contacts the elastic telescopic plate, the fastening frame abuts against the inner wall of the mounting tube, the free end of the elastic telescopic plate contacts the protective groove, and a spring is provided between the mounting rod and the hollow rod. The free end of the elastic telescopic plate moves backward to reset and contacts the protective groove, restoring the limiting position on the fastening frame. The hollow rod rotates to compress the spring, and the spring deforms and stores force under the compression of the hollow rod.

[0009] According to the above technical solution, the top of the mounting platform is equipped with a speed-reducing component to prevent uncontrolled cable movement, and the right side of the L-shaped frame is equipped with an anti-pull component. The speed-reducing component includes a connecting cylinder, a connecting plate, a connecting hole, a grooved plate, a hollow block, and a limiting plate. The hollow rod rotates slowly, causing the cable sleeve to rotate slowly to control the cable laying speed. The connecting cylinder is fixedly installed through the top right side of the mounting platform. The connecting plate is slidably installed on the inner wall of the connecting cylinder. The connecting hole is opened on the top of the connecting plate. The grooved plate is fixedly installed on the top of the connecting plate. The hollow block is rotatably installed on the inner wall of the grooved plate. The limiting plate is fixedly installed on the right side of the grooved plate.

[0010] According to the above technical solution, a connecting spring is provided between the connecting cylinder and the connecting plate. When the connecting plate moves downward, it compresses the connecting spring. The connecting spring deforms and stores force under the compressive force of the connecting plate. After the linkage block disengages from the hollow block, the connecting spring can drive the connecting plate to reset. The hollow block abuts against the limiting plate. A torsion spring is provided between the groove plate and the hollow block. The torsion spring can drive the hollow block to reset.

[0011] According to the above technical solution, the connecting cylinder is filled with liquid, and a sealing gasket is provided between the grooved plate and the connecting cylinder. The sealing gasket can improve the sealing between the grooved plate and the connecting cylinder. The top of the hollow block is set as an inclined surface.

[0012] According to the above technical solution, the anti-pull assembly includes an elastic telescopic rod, a flexible hose, a load-bearing ring, a load-bearing groove, a sliding rod, and a sliding channel. The mounting plate cannot move vertically during cable installation, thus ensuring that the cable is not excessively lifted and pulled by the mounting plate during installation. The elastic telescopic rod is fixedly inserted through the left and right walls of the L-shaped frame. The flexible hose is arranged between the elastic telescopic rod and the connecting cylinder. The load-bearing ring is fixedly installed on the circumferential surface of the screw. The load-bearing groove is opened on the circumferential surface of the load-bearing groove. The sliding rod slides through the top of the mounting platform. The sliding channel is opened at the free end of the elastic telescopic rod. A second spring is arranged between the sliding rod and the mounting platform. After the sliding rod is aligned with the sliding channel, the sliding rod moves upward under the elastic force of the second spring. The second spring can drive the sliding rod to return to its original position.

[0013] According to the above technical solution, an O-ring is provided between the free end and the fixed end of the elastic telescopic rod. The O-ring can improve the sealing between the free end and the fixed end of the elastic telescopic rod. The sliding rod abuts against the free end of the elastic telescopic rod, and liquid is provided inside the elastic telescopic rod.

[0014] This invention provides a cable installation device based on a ring main unit. It has the following advantages:

[0015] (1) The cable installation device based on the ring main unit adjusts the lifting height of the cable by vertically moving the mounting plate. Adjusting the lifting height of the cable helps to optimize the installation position of the cable inside the ring main unit and avoid mutual interference or congestion between cables. The cable is adaptively tightened by moving the fastening bracket downward. The cable laying is more stable and smooth by adjusting the fastening bracket, avoiding problems such as knotting or rebound caused by cable loosening.

[0016] (2) The cable installation device based on the ring network cabinet moves the free end of the elastic telescopic plate to the rear side to reset and contact the protective groove and restore the limit of the fastening frame. By limiting the fastening frame with the elastic telescopic plate, repeated adjustments can be avoided when installing cables of the same specification. Furthermore, the automatic restoration limit design of the elastic telescopic block can facilitate and quickly position the cable, making the cable installation more efficient and accurate.

[0017] (3) The cable installation device based on the ring main unit controls the cable laying speed by slowly rotating the hollow rod to drive the cable sleeve to rotate slowly. By slowly rotating the hollow rod to drive the cable sleeve to rotate slowly, the cable laying speed can be precisely controlled, thereby improving the efficiency and quality of cable installation.

[0018] (4) The cable installation device based on the ring network cabinet rotates by the hollow block without being limited by the positioning plate, which facilitates the rapid winding of the offset cable before secondary laying. The rapid winding of the cable can ensure that the cable will not be troubled by entanglement or intertwining during secondary laying, thereby improving the accuracy of cable installation and preventing cable offset.

[0019] (5) The cable installation device based on the ring main unit ensures that the cable will not be excessively lifted or pulled by the installation plate during installation because the installation plate cannot move vertically during installation. By fixing the position of the cable, unnecessary vertical movement is avoided, which can reduce the bending or damage of the cable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the position and structure of the mounting rod and hollow rod of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of section A in the middle;

[0023] Figure 4 This is a schematic diagram of the half-section structure of the hollow rod of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of section B;

[0025] Figure 6 This is a schematic diagram of a half-section of the mounting pipe of the present invention;

[0026] Figure 7 This is a schematic diagram of a half-section of the elastic telescopic rod of the present invention;

[0027] Figure 8 This is a schematic diagram of a half-section of the connecting cylinder structure of the present invention.

[0028] In the diagram: 1. Mounting platform; 2. Mounting rod; 3. Hollow rod; 4. Cable sleeve; 5. L-shaped frame; 6. Servo motor; 7. Lead screw; 8. Mounting plate; 9. Mounting tube; 10. Mounting hole; 11. Protective rod; 12. Protective groove; 13. Fastening frame; 14. Elastic telescopic plate; 15. Elastic telescopic block; 16. Linkage block; 171. Connecting cylinder; 172. Connecting plate; 173. Connecting hole; 174. Groove plate; 175. Hollow block; 176. Limiting plate; 177. Connecting spring; 181. Elastic telescopic rod; 182. Flexible hose; 183. Load-bearing ring; 184. Load-bearing groove; 185. Sliding rod; 186. Sliding groove. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-6 One embodiment of the present invention is: a cable installation device based on a ring main unit, comprising: an installation platform 1, which is disposed on the top of the ground; an installation rod 2, which is fixedly installed on the front and rear walls of the installation platform 1; a hollow rod 3, which is rotatably installed on the circumferential surface of the installation rod 2; a cable sleeve 4, which is fixedly installed on the circumferential surface of the hollow rod 3, and a cable is disposed on the circumferential surface of the cable sleeve 4; an L-shaped frame 5, which is fixedly installed on the top of the installation platform 1; a servo motor 6, which is fixedly installed on the top of the L-shaped frame 5; a lead screw 7, which is fixedly installed on the output end of the servo motor 6; an installation plate 8, which is slidably installed on the inner wall of the L-shaped frame 5, and is threadedly connected to the lead screw 7, and is used to support the cable; and an installation tube 9, which is fixedly installed on the cable. Mounting tube 9 is installed on the top of mounting plate 8 to guide the cable; mounting hole 10 is opened on the circumferential surface of mounting tube 9; protective rod 11 is fixedly installed on the top of mounting plate 8; protective groove 12 is opened on the circumferential surface of protective rod 11; fastening bracket 13 is slidably installed on the circumferential surface of protective rod 11; elastic telescopic plate 14 is fixedly installed on the rear side of fastening bracket 13. Fastening bracket 13 moves downward to adaptively fasten the cable. The cable lifting height adjustment helps to optimize the installation position of the cable inside the ring main unit, avoid mutual interference or congestion between cables, and the adaptive adjustment of fastening bracket 13 makes the cable laying more stable and smooth, avoiding problems such as knotting or rebound caused by cable slack.

[0031] A linkage block 16 is fixedly installed on the circumference of the hollow rod 3, and an elastic telescopic block 15 is fixedly installed on the top of the fastening frame 13. A spring is provided between the mounting plate 8 and the fastening frame 13. When the fastening frame 13 moves upward, it drags the spring. The spring deforms and stores force under the drag of the fastening frame 13. The fastening frame 13 moves downward under the reaction force of the spring. The spring can drive the fastening frame 13 to reset.

[0032] The free end of the elastic telescopic block 15 contacts the elastic telescopic plate 14, the fastening frame 13 abuts against the inner wall of the mounting tube 9, the free end of the elastic telescopic plate 14 contacts the protective groove 12, and a spring is provided between the mounting rod 2 and the hollow rod 3. By limiting the fastening frame 13 through the elastic telescopic plate 14, repeated adjustments can be avoided when installing cables of the same specification. The free end of the elastic telescopic plate 14 moves backward to reset and contacts the protective groove 12 and restores the limiting of the fastening frame 13. The hollow rod 3 rotates to compress the spring. The spring is deformed and stores force due to the compression of the hollow rod 3.

[0033] In this embodiment, during operation: the servo motor 6 is started, driving the lead screw 7 to rotate. The rotation of the lead screw 7 causes the mounting plate 8 to move vertically. The vertical movement of the mounting plate 8 adjusts the lifting height of the cable. Before installing the cable, the free end of the elastic telescopic block 15 is manually pushed to the left. The free end of the elastic telescopic block 15 moves to the left, disengaging from contact with the elastic telescopic plate 14 and releasing the restriction on the elastic telescopic plate 14. After the restriction on the elastic telescopic plate 14 is released, the free end of the elastic telescopic plate 14 is manually pushed forward. The free end of the elastic telescopic plate 14 moves forward, disengaging from contact with the protective groove 12 and releasing the restriction on the fastening frame 13. After the restriction on the fastening frame 13 is released, the cable wrapped around the circumference of the cable sleeve 4 is manually dragged through the mounting tube 9. The cable passes through the mounting tube 9 and contacts the fastening frame 13, squeezing the fastening frame 13. The fastening frame 13 is then energized. The cable is compressed and moves upward, while the fastening bracket 13 moves downward under the reaction force of spring 1. The fastening bracket 13 moves downward to adaptively fasten the cable. After the cable is fixed by the fastening bracket 13, the free end of the elastic telescopic plate 14 is manually released. After the free end of the elastic telescopic plate 14 is released, it moves backward and resets under its own elastic force. The free end of the elastic telescopic plate 14 moves backward and resets to contact the inclined surface of the free end of the elastic telescopic block 15 and compresses the elastic telescopic block 15. The elastic telescopic block 15 moves to the left due to the compression of the free end of the elastic telescopic plate 14. At the same time, the free end of the elastic telescopic plate 14 moves backward and resets to contact the protective groove 12 and restores the limit on the fastening bracket 13. After the fastening bracket 13 is restricted to the height of the cable, the cable is manually pulled through the installation pipe 9 and the fastening bracket 13 to carry out the cable installation operation.

[0034] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, a speed-reducing component to prevent uncontrolled cable movement is provided on the top of the mounting platform 1, and an anti-pull component is provided on the right side of the L-shaped frame 5. The speed-reducing component includes a connecting cylinder 171, a connecting plate 172, a connecting hole 173, a grooved plate 174, a hollow block 175, and a limiting plate 176. The connecting cylinder 171 is fixedly installed through the top right side of the mounting platform 1. The connecting plate 172 is slidably installed on the inner wall of the connecting cylinder 171. The connecting hole 173 is opened on the top of the connecting plate 172. The grooved plate 174 is fixedly installed on the top of the connecting plate 172. The hollow block 175 is rotatably installed on the inner wall of the grooved plate 174. The limiting plate 176 is fixedly installed on the right side of the grooved plate 174. The cable sleeve 4 is slowly rotated by the slow rotation of the hollow rod 3, which can accurately control the cable laying speed, thereby improving the efficiency and quality of cable installation.

[0035] A connecting spring 177 is provided between the connecting cylinder 171 and the connecting plate 172. When the connecting plate 172 moves downward, it compresses the connecting spring 177. The connecting spring 177 deforms and stores force under the compressive force of the connecting plate 172. After the linkage block 16 disengages from the hollow block 175, the connecting spring 177 can drive the connecting plate 172 to reset. The hollow block 175 abuts against the limiting plate 176. A torsion spring is provided between the groove plate 174 and the hollow block 175. The torsion spring can drive the hollow block 175 to reset.

[0036] The connecting cylinder 171 is filled with liquid, and a sealing gasket is provided between the grooved plate 174 and the connecting cylinder 171. The sealing gasket can improve the sealing between the grooved plate 174 and the connecting cylinder 171. The top of the hollow block 175 is set as a slope, which can ensure that the cable is not tangled or intertwined during the secondary cable laying, thereby improving the accuracy of cable installation and preventing cable deviation.

[0037] The anti-pull assembly includes an elastic telescopic rod 181, a flexible hose 182, a load-bearing ring 183, a load-bearing groove 184, a sliding rod 185, and a sliding channel 186. The elastic telescopic rod 181 is fixedly inserted through the left and right walls of the L-shaped frame 5. The flexible hose 182 is located between the elastic telescopic rod 181 and the connecting cylinder 171. The load-bearing ring 183 is fixedly installed on the circumferential surface of the screw 7. The load-bearing groove 184 is opened on the circumferential surface of the load-bearing groove 184. The sliding rod 185 slides through the top of the mounting platform 1. The sliding channel 186 is opened at the free end of the elastic telescopic rod 181. A second spring is installed between the sliding rod 185 and the mounting platform 1. After the sliding rod 185 is aligned with the sliding channel 186, the sliding rod 185 moves upward under the elastic force of the second spring. The second spring can drive the sliding rod 185 to return to its original position. By fixing the position of the cable, unnecessary vertical movement is avoided, which can reduce the bending or damage of the cable.

[0038] An O-ring is provided between the free end and the fixed end of the elastic telescopic rod 181. The O-ring can improve the sealing between the free end and the fixed end of the elastic telescopic rod 181. The slide rod 185 abuts against the free end of the elastic telescopic rod 181. Liquid is provided inside the elastic telescopic rod 181.

[0039] In this embodiment, during cable installation, the cable sleeve 4 and hollow rod 3 rotate. The rotation of hollow rod 3 causes linkage block 16 to rotate clockwise. Linkage block 16, rotating clockwise, contacts the inclined surface of hollow block 175 and compresses it. Hollow block 175, compressed by linkage block 16 and limited by limiting plate 176, cannot rotate. Unable to rotate, it can only move downwards. This downward movement causes groove plate 174 to move downwards, which in turn causes connecting plate 172 to move downwards. Connecting plate 172, moving downwards, compresses the liquid inside connecting cylinder 171. The liquid inside connecting cylinder 171, compressed by connecting plate 172, can only flow slowly through connecting hole 173. This slow flow of liquid inside connecting cylinder 171 forces connecting plate 172 and hollow block 175 to move slowly downwards. The downward rotation causes the linkage block 16 and hollow rod 3 to rotate slowly. The slow rotation of hollow rod 3 drives the cable sleeve 4 to rotate slowly, controlling the cable laying speed. After the linkage block 16 continues to rotate clockwise and disengages from the hollow block 175, the connecting plate 172 moves upward and resets under the elastic force of the connecting spring 177. If the cable deviates significantly during cable installation, the cable can be manually loosened. After the cable is manually loosened, the hollow rod 3 rotates counterclockwise under the elastic force of the spring. The counterclockwise rotation of hollow rod 3 drives the cable sleeve 4 to wind up the partially deviated cable. After the deviated cable is wound up, it is laid out for installation. At the same time, the counterclockwise rotation of hollow rod 3 drives the linkage block 16 to rotate counterclockwise. The counterclockwise rotation of linkage block 16 contacts the left side of hollow block 175 and squeezes hollow block 175. At this time, hollow block 175 rotates without being limited by the limiting plate 176, which facilitates the rapid winding of the deviated cable before the second laying.

[0040] The connecting plate 172 moves downwards, squeezing the liquid inside the connecting cylinder 171. The liquid inside the connecting cylinder 171, squeezed by the connecting plate 172, enters the elastic telescopic rod 181 through the hose 182. The liquid inside the elastic telescopic rod 181 squeezes the free end of the elastic telescopic rod 181, causing it to move closer to the lead screw 7. This movement aligns the slide rod 185 with the slide groove 186. Once the slide rod 185 is aligned with the slide groove 186, the slide rod 185... Under the action of elastic force, the slide rod 185 moves upward and contacts the inner wall of the slide groove 186, limiting the free end of the elastic telescopic rod 181. At the same time, the free end of the elastic telescopic rod 181 moves towards the lead screw 7 and contacts the load-bearing groove 184, limiting the load-bearing ring 183. The load-bearing ring 183 cannot rotate due to the limitation of the free end of the elastic telescopic rod 181. The inability of the load-bearing ring 183 to rotate prevents the lead screw 7 from rotating. The inability of the lead screw 7 to rotate ensures that the mounting plate 8 cannot move vertically during cable installation. The inability of the mounting plate 8 to move vertically during cable installation ensures that the cable will not be excessively lifted or pulled by the mounting plate 8 during installation.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable installation device based on a ring main unit, characterized by Include: The installation platform (1) is arranged on the top of the ground; The installation rod (2) is fixedly installed on the front and rear walls of the installation platform (1); The hollow rod (3) is rotatably installed on the circumferential surface of the installation rod (2); The cable sleeve (4) is fixedly installed on the circumferential surface of the hollow rod (3), and the circumferential surface of the cable sleeve (4) is provided with a cable; The L-shaped frame (5) is fixedly installed on the top of the installation platform (1); The servo motor (6) is fixedly installed on the top of the L-shaped frame (5); The lead screw (7) is fixedly installed on the output end of the servo motor (6); The mounting plate (8) is slidably installed on the inner wall of the L-shaped frame (5), and the mounting plate (8) is threadedly connected with the lead screw (7), and the mounting plate (8) is used for lifting the cable; The mounting pipe (9) is fixedly installed on the top of the mounting plate (8), and the mounting pipe (9) is used for guiding the cable; The mounting hole (10) is formed in the circumferential surface of the mounting pipe (9); The protection rod (11) is fixedly installed on the top of the mounting plate (8); The protection groove (12) is formed in the circumferential surface of the protection rod (11); The fastening frame (13) is slidably installed on the circumferential surface of the protection rod (11); The elastic expansion plate (14) is fixedly installed on the rear side of the fastening frame (13); The hollow rod (3) is fixedly installed on the circumferential surface of the hollow rod (3), and the fastening frame (13) is fixedly installed on the top of the elastic expansion block (15), and the mounting plate (8) and the fastening frame (13) are provided with a spring, the top of the installation platform (1) is provided with a speed reduction assembly for preventing the cable from moving out of control, and the right side of the L-shaped frame (5) is provided with a anti-pulling assembly; The free end of the elastic expansion block (15) is in contact with the elastic expansion plate (14), the fastening frame (13) is in contact with the inner wall of the mounting pipe (9), the free end of the elastic expansion plate (14) is in contact with the protection groove (12), and the installation rod (2) and the hollow rod (3) are provided with a clock spring.

2. The cable installation device based on ring main unit according to claim 1, characterized in that: The speed reduction assembly comprises a connecting cylinder (171), a connecting plate (172), a connecting hole (173), a groove plate (174), a hollow block (175) and a limiting plate (176), the connecting cylinder (171) is fixedly penetrated through the right top of the installation platform (1), the connecting plate (172) is slidably installed on the inner wall of the connecting cylinder (171), the connecting hole (173) is formed in the top of the connecting plate (172), the groove plate (174) is fixedly installed on the top of the connecting plate (172), the hollow block (175) is rotatably installed on the inner wall of the groove plate (174), and the limiting plate (176) is fixedly installed on the right side of the groove plate (174).

3. The cable installation device based on ring main unit according to claim 2, characterized in that: The adapter cylinder (171) is internally provided with liquid, the recessed plate (174) and the adapter cylinder (171) are provided with a sealing washer, and the hollow block (175) is provided with an inclined surface on the top.

4. The cable installation device based on ring main unit according to claim 3, characterized in that: The anti-pulling assembly comprises an elastic telescopic rod (181), a hose (182), a load-bearing ring (183), a load-bearing groove (184), a sliding rod (185) and a sliding groove (186), the elastic telescopic rod (181) is fixedly penetrated through the left and right walls of the L-shaped frame (5), the hose (182) is arranged between the elastic telescopic rod (181) and the adapter cylinder (171), the load-bearing ring (183) is fixedly installed on the circumferential surface of the lead screw (7), the load-bearing groove (184) is formed in the circumferential surface of the load-bearing groove (184), the sliding rod (185) is slidably penetrated through the top of the mounting table (1), the sliding groove (186) is formed in the free end of the elastic telescopic rod (181), and the sliding rod (185) and the mounting table (1) are provided with spring two.

5. A cable installation arrangement based on a ring main unit according to claim 4, characterized in that: The elastic telescopic rod (181) is internally provided with liquid.

6. A cable installation apparatus based on a ring main unit according to claim 5, characterized in that: The anti-pulling assembly comprises an elastic telescopic rod (181), a hose (182), a load-bearing ring (183), a load-bearing groove (184), a sliding rod (185) and a sliding groove (186), the elastic telescopic rod (181) is fixedly penetrated through the left and right walls of the L-shaped frame (5), the hose (182) is arranged between the elastic telescopic rod (181) and the adapter cylinder (171), the load-bearing ring (183) is fixedly installed on the circumferential surface of the lead screw (7), the load-bearing groove (184) is formed in the circumferential surface of the load-bearing groove (184), the sliding rod (185) is slidably penetrated through the top of the mounting table (1), the sliding groove (186) is formed in the free end of the elastic telescopic rod (181), and the sliding rod (185) and the mounting table (1) are provided with spring two.

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