A cable pulling device for laying power cables

Abstract

This invention discloses a cable pulling device for laying power cables, including a placement platform and a winding roller. Two mounting rods are fixedly connected to the outer side of the placement platform, and the two mounting rods are equipped with the same gravity compression component. During power cable laying, the cable is passed through two guide coils. The gravity rod deflects under its own weight, causing a gravity slider to slide within two semi-circular guide rails. This moves the gravity rod to its closest point to the ground, where it exerts gravity compression on the power cable. This compression keeps the cable taut when laid on the ground, ensuring it doesn't spread loosely. Simultaneously, the two guide coils and the cable grooves bend and compress the cable, further improving the tension of the laid cable distribution.

Description

Technical Field

[0001] This invention relates to the field of power cable laying technology, and in particular to a cable pulling device for power cable laying. Background Technology

[0002] In recent years, the manufacturing technology of power cables both domestically and internationally has developed rapidly. XLPE insulated power cables, including catenary (CCV), vertical tower (VCV), and long mold (MDCV) types, have seen significant improvements in product quality. Technical indicators such as the size and content of micropores and impurities, as well as core eccentricity, are strictly controlled. With the booming power supply market, the number of power cable circuits in operation globally has increased rapidly. Copper-core power cables are gradually replacing aluminum-core power cables, and XLPE insulated power cables have replaced paper-insulated power cables, and are gradually replacing PVC-insulated and oil-filled power cables. Voltage levels have reached 5000kV, with conductor cross-sectional areas reaching 2500mm². 2 Power cables are cable products used in the main lines of power systems to transmit and distribute high-power electrical energy. They include power cables of various voltage levels from 1 to 500KV and above, and various types of insulation. When laying cables over long distances, they need to be pulled by a traction device.

[0003] Existing cable pulling devices for power cable laying involve placing cable winding rollers on a trolley and pulling the trolley to lay the cable. During the laying process, due to the long laying distance, the cable often ends up loosely scattered on the ground after being laid. This requires workers to pull the cable a second time to bring it to a taut state before installation, resulting in a secondary input of labor and reducing the value of the pulling device. Summary of the Invention

[0004] This invention discloses a cable pulling device for laying power cables, aiming to solve the technical problem that existing cable pulling devices, when used, place the cable winding roller on a trolley and pull the trolley to pull the cable for laying. During the laying process, due to the long laying distance, the cable often ends up loosely laid on the ground after being laid out. This requires workers to pull it a second time to bring it to a relatively tight state before installation, resulting in a secondary input of labor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A cable pulling device for laying power cables includes a placement platform and a winding roller. Two mounting rods are fixedly connected to the outer side of the placement platform, and the two mounting rods are equipped with the same gravity extrusion assembly. The gravity extrusion assembly includes two semi-circular guide rails and a gravity rod. The two semi-circular guide rails are fixedly connected to the outer side of the corresponding mounting rods. Gravity sliders are slidably connected inside the two semi-circular guide rails. Fixing blocks are fixedly connected to the outer side of the two gravity sliders. The gravity rod is fixedly connected to the bottom of the two fixing blocks. A wire groove is opened on the outer side of the gravity rod facing downward, and two connecting rods are fixedly connected inside the wire groove. Two through coils of different sizes are fixedly connected to the opposite side of the two connecting rods.

[0006] By incorporating a gravity compression component, during the laying of power cables, the cables are passed through two guide coils. As the platform is manually pulled, the gravity rod deflects under its own weight, causing the gravity slider to slide within two semi-circular guide rails. This moves the gravity rod to its closest point to the ground, where it applies gravity compression to the power cable. This compression keeps the cable taut as it is laid on the ground, ensuring it doesn't become loose. Simultaneously, the two guide coils and the cable trays bend and compress the cable, further increasing the tension of the laid cable distribution.

[0007] In a preferred embodiment, a grounding seat is fixedly connected to the bottom of the placement platform, and a roller groove is opened at the bottom of the grounding seat. Movable rollers are connected at equal intervals on both sides of the inner wall of the roller groove through bearings, and a pulling frame is fixedly connected to one side of the grounding seat.

[0008] In a preferred embodiment, the top of the placement platform is fixedly connected to two fixed plates, and hydraulic cylinders are fixedly connected to opposite sides of the two fixed plates. Adjustment plates are fixedly connected to the output ends of the two hydraulic cylinders, and adjustment sliders are fixedly connected to the bottom of the two adjustment plates. A sliding groove is opened on the top of the placement platform, and the two adjustment sliders are slidably connected inside the sliding groove.

[0009] In a preferred embodiment, each of the two adjusting plates is provided with a docking assembly on its opposite side, and the docking assembly includes a follower rotating plate. A winding roller is located between the two docking assemblies. A connecting shaft is fixedly connected to the side of the follower rotating plate facing the adjacent adjusting plate, and the other end of the connecting shaft is connected to the outside of the adjusting plate through a bearing. Both sides of the winding roller are provided with docking grooves, and iron ring blocks are provided on the outside of the winding roller at the docking groove. Two electromagnets are provided on the side of the follower rotating plate facing the winding roller. A docking post is fixedly connected to the side of the follower rotating plate facing the winding roller, and pressing plates are connected at equal intervals to the outside of the docking post through hinges. Friction blocks are provided at equal intervals on each pressing plate, and a pressing spring rod is fixedly connected between the pressing plate and the follower rotating plate.

[0010] When installing the winding roller using docking components, it is placed between two docking components. The hydraulic cylinder is adjusted to move the adjusting plate, causing the docking post to engage with the docking groove. During engagement, the compression spring rod on the compression plate is compressed, and the compression plate is slowly pressed into the docking groove. The reaction force of the compression spring rod causes the friction block on the compression plate to make close contact with the inside of the docking groove. After the docking post and docking groove are docked, the electromagnet is energized, and the electromagnet and the iron ring block attract each other, ensuring the firmness of the winding roller after installation.

[0011] In a preferred embodiment, two fixing rods are fixedly connected to the side of the adjusting plate facing the winding roller, and the other end of the two fixing rods is provided with the same speed limiting component. The speed limiting component includes a mounting plate, which is fixedly connected to the outside of the two fixing rods. A circular slide rail is fixedly connected to the side of the mounting plate facing the winding roller, and a locking block is fixedly connected to the inner wall of the circular slide rail. A moving block is slidably connected inside the circular slide rail, and a buffer spring rod is fixedly connected between the moving block and the locking block. An embedding groove is opened on the outer side of the moving block, and a connecting frame is fixedly connected to the outer side of the winding roller facing the mounting plate. An embedding block is fixedly connected to the connecting frame, and the embedding block is adapted to the embedding groove.

[0012] By incorporating a speed limiting component, when the placement platform is manually pulled, one end of the power cable is restricted. The manual pulling then initiates the cable unwinding operation on the winding roller. During unwinding, the insert block slowly engages with the insert groove on the moving block. The rotating winding roller causes the moving block to slide in the circular slide rail, thereby causing the moving block to compress the buffer spring rod. The reaction force of the buffer spring rod provides a buffering and limiting effect on the moving block, preventing the power cable from being unwound too quickly and becoming loosely distributed due to the winding roller rotating too fast.

[0013] As can be seen from the above, the beneficial effects of the present invention are: 1. A cable pulling device for laying power cables is provided. When laying power cables, the cables are passed through two loops. As the platform is moved manually, the gravity rod deflects under its own weight. The gravity slider slides in two semi-circular guide rails, which moves the gravity rod to the height closest to the ground. The gravity rod compresses the power cable with gravity, so that when the power cable is laid on the ground, the gravity compresses it and keeps it in a taut state, thus ensuring that it will not be loosely distributed on the ground after laying. At the same time, the two loops and the cable grooves bend and compress the power cable, further improving the tension of the power cable distribution after laying. 2. When the placement platform is moved manually, one end of the power cable is restricted. The manual pulling then starts the cable release operation on the winding roller. During the release process, the insert block slowly engages with the insert groove on the moving block. The rotating winding roller causes the moving block to slide in the circular slide rail, thereby causing the moving block to squeeze the buffer spring rod. The reaction force of the buffer spring rod has a buffering and restricting effect on the moving block, preventing the power cable from being released too quickly and becoming loose. 3. When installing the winding roller, place it between the two docking components. Adjust the hydraulic cylinder to move the adjusting plate, so that the docking post is inserted into the docking groove. During the insertion process, the compression spring rod on the extrusion plate is compressed, and the extrusion plate is slowly pressed into the docking groove. The reaction force of the extrusion spring rod causes the friction block on the extrusion plate to make close contact with the inside of the docking groove. After the docking post and the docking groove are docked, the electromagnet is energized, and the electromagnet and the iron ring block attract each other, ensuring the firmness of the winding roller after installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the cable traction device proposed in this invention.

[0015] Figure 2 This is a front view of the overall structure of the cable traction device proposed in this invention.

[0016] Figure 3 This is a schematic diagram of the gravity compression component of the cable traction device proposed in this invention.

[0017] Figure 4 This is a schematic diagram of the combined structure of the docking component and the speed limiting component of the cable traction device proposed in this invention.

[0018] Figure 5 This is a schematic diagram of the docking assembly of the cable traction device proposed in this invention.

[0019] Figure 6 for Figure 5 Enlarged view of a local structure.

[0020] Figure 7 This is a schematic diagram of the speed limiting component of the cable traction device proposed in this invention.

[0021] In the diagram: 1. Placement platform; 2. Sliding groove; 3. Adjusting plate; 4. Winding roller; 5. Pulling frame; 6. Hydraulic cylinder; 7. Fixing plate; 8. Adjusting slider; 9. Grounding seat; 10. Mounting rod; 11. Gravity extrusion assembly; 1101. Gravity round rod; 1102. Through coil; 1103. Semi-circular guide rail; 1104. Gravity slider; 1105. Wire groove; 1106. Connecting rod; 1107. Fixing block; 12. Moving roller; 13. Speed ​​limiting assembly; 130 1. Mounting plate; 1302. Circular slide rail; 1303. Embedded groove; 1304. Buffer spring rod; 1305. Locking block; 1306. Embedded block; 1307. Connecting frame; 1308. Moving block; 14. Docking assembly; 1401. Follower rotating plate; 1402. Connecting shaft; 1403. Electromagnet; 1404. Iron ring block; 1405. Friction block; 1406. Docking post; 1407. Extrusion plate; 1408. Extrusion spring rod; 15. Fixing rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] The cable pulling device disclosed in this invention for laying power cables is mainly applied to existing cable pulling devices. In the process of using the cable winding roller, the cable is placed on a trolley, and the cable is laid by pulling the trolley. During the laying process, due to the long laying distance, the cable often ends up loosely on the ground after being laid. This requires workers to pull it a second time to bring it to a relatively tight state before it can be installed, resulting in a scenario of secondary labor input.

[0024] Reference Figures 1-7 A cable pulling device for laying power cables includes a placement platform 1 and a winding roller 4. Two mounting rods 10 are fixedly connected to the outer side of the placement platform 1, and the same gravity extrusion assembly 11 is provided on the two mounting rods 10. The gravity extrusion assembly 11 includes two semi-circular guide rails 1103 and a gravity rod 1101. The two semi-circular guide rails 1103 are fixedly connected to the outer side of the corresponding mounting rods 10. Gravity sliders 1104 are slidably connected inside the two semi-circular guide rails 1103. Fixing blocks 1107 are fixedly connected to the outer side of the two gravity sliders 1104. The gravity rod 1101 is fixedly connected to the bottom of the two fixing blocks 1107. A wire groove 1105 is opened on the outer side of the gravity rod 1101 facing downward. Two connecting rods 1106 are fixedly connected inside the wire groove 1105. Two through coils 1102 are fixedly connected to the opposite side of the two connecting rods 1106. The two through coils 1102 are of different sizes.

[0025] It should be noted that during the laying of the power cable, it is passed through two loop coils 1102. As the platform 1 is moved manually, the gravity rod 1101 deflects under its own weight. The gravity slider 1104 slides in the two semi-circular guide rails 1103, which drives the gravity rod 1101 to the height closest to the ground. The gravity rod 1101 exerts gravity compression on the power cable, so that when the power cable is laid on the ground, the gravity compresses it and keeps it in a taut state, thus ensuring that it will not be loosely distributed on the ground after laying. At the same time, the two loop coils 1102 and the cable tray 1105 bend and compress the power cable, further increasing the tension of the power cable distribution after laying.

[0026] Reference Figure 1 and Figure 2 In a preferred embodiment, a grounding seat 9 is fixedly connected to the bottom of the placement platform 1, and a roller groove is opened at the bottom of the grounding seat 9. Moving rollers 12 are connected at equal intervals on both sides of the inner wall of the roller groove through bearings. A pulling frame 5 is fixedly connected to one side of the grounding seat 9.

[0027] Reference Figure 1 , Figure 2 and Figure 4 In a preferred embodiment, two fixed plates 7 are fixedly connected to the top of the placement platform 1, and hydraulic cylinders 6 are fixedly connected to the opposite side of the two fixed plates 7. Adjustment plates 3 are fixedly connected to the output ends of the two hydraulic cylinders 6, and adjustment sliders 8 are fixedly connected to the bottom of the two adjustment plates 3. A sliding groove 2 is opened on the top of the placement platform 1, and the two adjustment sliders 8 are slidably connected inside the sliding groove 2.

[0028] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 In a preferred embodiment, each of the two adjusting plates 3 is provided with a docking assembly 14 on its opposite side, and the docking assembly 14 includes a follower rotating plate 1401. The winding roller 4 is located between the two docking assemblies 14. The side of the follower rotating plate 1401 facing the adjacent adjusting plate 3 is fixedly connected to a connecting shaft 1402, and the other end of the connecting shaft 1402 is connected to the outside of the adjusting plate 3 through a bearing. Both sides of the winding roller 4 are provided with docking grooves, and the outside of the winding roller 4 at the docking groove is provided with an iron ring block 1404. Two electromagnets 1403 are provided on the side of the follower rotating plate 1401 facing the winding roller 4. A docking post 1406 is fixedly connected on the side of the follower rotating plate 1401 facing the winding roller 4, and an extrusion plate 1407 is connected at equal intervals to the outside of the docking post 1406 through a hinge. Friction blocks 1405 are provided at equal intervals on each extrusion plate 1407. An extrusion spring rod 1408 is fixedly connected between the extrusion plate 1407 and the follower rotating plate 1401.

[0029] It should be noted that when installing the winding roller 4, it is placed between the two docking components 14. The hydraulic cylinder 6 is adjusted to move the adjusting plate 3, so that the docking post 1406 is inserted into the docking groove. During the insertion process, the compression spring rod 1408 on the compression plate 1407 is compressed, and the compression plate 1407 is slowly pressed into the docking groove. The reaction force of the compression spring rod 1408 causes the friction block 1405 on the compression plate 1407 to make close contact with the inside of the docking groove. After the docking post 1406 is docked with the docking groove, the electromagnet 1403 is energized, and the electromagnet 1403 and the iron ring block 1404 are attracted to each other, ensuring the firmness of the winding roller 4 after installation.

[0030] Reference Figure 1 , Figure 4 and Figure 7 In a preferred embodiment, two fixing rods 15 are fixedly connected to the side of the adjusting plate 3 facing the winding roller 4, and the other end of the two fixing rods 15 is provided with the same speed limiting component 13. The speed limiting component 13 includes a mounting plate 1301, which is fixedly connected to the outside of the two fixing rods 15. A circular slide rail 1302 is fixedly connected to the side of the mounting plate 1301 facing the winding roller 4, and a locking block 1305 is fixedly connected to the inner wall of the circular slide rail 1302. A moving block 1308 is slidably connected inside the circular slide rail 1302. A buffer spring rod 1304 is fixedly connected between the moving block 1308 and the locking block 1305. An embedding groove 1303 is opened on the outer side of the moving block 1308, and a connecting frame 1307 is fixedly connected to the outside of the winding roller 4 facing the mounting plate 1301. An embedding block 1306 is fixedly connected to the connecting frame 1307, and the embedding block 1306 is adapted to the embedding groove 1303.

[0031] It should be noted that when the placement platform 1 is moved manually, one end of the power cable is restricted. The manual pulling then causes the power cable on the winding roller 4 to begin unwinding. During the unwinding process, the embedded block 1306 slowly engages with the embedded groove 1303 on the moving block 1308. The rotating winding roller 4 causes the moving block 1308 to slide in the annular slide rail 1302, thereby causing the moving block 1308 to press against the buffer spring rod 1304. The reaction force of the buffer spring rod 1304 has a buffering and restricting effect on the moving block 1308, preventing the winding roller 4 from rotating too fast and causing the power cable to unwind too quickly and become loosely distributed.

[0032] Working Principle: In use, first install the winding roller 4, placing it between the two docking components 14. Adjust the hydraulic cylinder 6 to move the adjusting plate 3, causing the docking post 1406 to engage in the docking groove. During engagement, the compression spring rod 1408 on the compression plate 1407 is compressed, causing the compression plate 1407 to slowly press into the docking groove. The reaction force of the compression spring rod 1408 causes the friction block 1405 on the compression plate 1407 to make close contact with the inside of the docking groove. After the docking post 1406 is docked with the docking groove, the electromagnet 1403 is energized, attracting the electromagnet 1403 to the iron ring block 1404. After the winding roller 4 is installed, pass the power cable through the two coils 1102. Manually pull the placement platform 1 to move it. One end of the power cable is restricted, and manual pulling drives the electromagnet on the winding roller 4. The cable laying operation begins. During the laying process, the insert block 1306 slowly engages with the insert groove 1303 on the moving block 1308. The rotating winding roller 4 drives the moving block 1308 to slide in the annular slide rail 1302, thereby causing the moving block 1308 to compress the buffer spring rod 1304. The reaction force of the buffer spring rod 1304 has a buffering and limiting effect on the moving block 1308. During the laying of the power cable, the gravity rod 1101 deflects under its own weight, and the gravity slider 1104 slides in the two semi-circular guide rails 1103, which drives the gravity rod 1101 to move to the height closest to the ground. The gravity rod 1101 compresses the power cable with gravity, so that when the power cable is laid on the ground, the gravity compresses it and keeps it in a taut state, improving the laying effect of the power cable.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cable pulling device for laying power cables, comprising a placement platform and a winding roller, characterized in that, Two mounting rods are fixedly connected to the outer side of the placement platform, and the same gravity extrusion assembly is provided on the two mounting rods. The gravity extrusion assembly includes two semi-circular guide rails and a gravity circular rod. The two semi-circular guide rails are fixedly connected to the outer side of the corresponding mounting rods. Gravity sliders are slidably connected inside the two semi-circular guide rails. Fixing blocks are fixedly connected to the outer side of the two gravity sliders. The gravity circular rod is fixedly connected to the bottom of the two fixing blocks. A groove is opened on the outer side of the gravity circular rod facing downward. Two connecting rods are fixedly connected inside the groove. Two through coils of different sizes are fixedly connected to the opposite side of the two connecting rods. Two fixed plates are fixedly connected to the top of the placement platform, and hydraulic cylinders are fixedly connected to opposite sides of the two fixed plates. Adjusting plates are fixedly connected to the output ends of the two hydraulic cylinders, and adjusting sliders are fixedly connected to the bottom of the two adjusting plates. A sliding groove is formed on the top of the placement platform, and the two adjusting sliders are slidably connected inside the sliding groove. A docking assembly is provided on opposite sides of the two adjusting plates, and the docking assembly includes a follower rotating plate. A winding roller is located between the two docking assemblies. A connecting shaft is fixedly connected to the side of the follower rotating plate facing the adjacent adjusting plate, and the other end of the connecting shaft is connected to a bearing. The outer side of the adjusting plate; both sides of the winding roller have mating grooves, and iron ring blocks are provided on the outer side of the winding roller at the mating groove. Two electromagnets are provided on the side of the follower rotating plate facing the winding roller; a mating column is fixedly connected to the side of the follower rotating plate facing the winding roller, and an extrusion plate is connected at equal intervals to the outer side of the mating column by hinges. Friction blocks are provided at equal intervals on each extrusion plate, and an extrusion spring rod is fixedly connected between the extrusion plate and the follower rotating plate; the gravity rod applies gravity extrusion to the power cable, so that when the power cable is laid on the ground, gravity compresses it and keeps it in a taut state.

2. A cable pulling device for laying power cables according to claim 1, characterized in that, The bottom of the placement platform is fixedly connected to a grounding seat, and the bottom of the grounding seat has a roller groove. The inner walls on both sides of the roller groove are connected to movable rollers at equal intervals through bearings. A pulling frame is fixedly connected to one side of the grounding seat.

3. A cable pulling device for laying power cables according to claim 1, characterized in that, Two fixing rods are fixedly connected to the side of the adjusting plate facing the winding roller, and the other end of the two fixing rods is provided with the same speed limiting component. The speed limiting component includes a mounting plate, which is fixedly connected to the outside of the two fixing rods.

4. A cable pulling device for laying power cables according to claim 3, characterized in that, A circular slide rail is fixedly connected to the side of the mounting plate facing the winding roller, and a locking block is fixedly connected to the inner wall of the circular slide rail. A moving block is slidably connected inside the circular slide rail, and a buffer spring rod is fixedly connected between the moving block and the locking block.

5. A cable pulling device for laying power cables according to claim 4, characterized in that, The moving block has an embedding groove on its outer side, and a connecting frame is fixedly connected to the outer side of the winding roller facing the mounting plate. An embedding block is fixedly connected to the connecting frame, and the embedding block is adapted to the embedding groove.

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