Cable laying device for power supply company

Abstract

The cable laying device for the power supply company comprises a base and a cable reel, a cable conveying mechanism used for pulling a cable to move is fixedly installed on one side of the top end of the base, a power box is fixedly installed on one side of the joint of the base and the cable conveying mechanism, and a battery rack is fixedly arranged in the power box; according to the cable laying device for the power supply company, the cable traction structure and the cable rotating disc frame are integrated on the same base and driven by the same motor, the cable can be laid in a traction mode at a constant speed, and meanwhile the cable can be laid in the traction mode at the same time; the cable rotating disc rotates synchronously at a constant speed, unwinding and traction are carried out at the same time, the traction pulling force in the cable laying period can be reduced, an improved cable traction structure can carry out auxiliary heating and heat preservation on the cable in the traction period, and then the probability of cable cracking and damage is reduced.

Description

Technical Field

[0001] This invention relates to the field of cable traction and laying technology, specifically to a cable laying device for power supply companies. Background Technology

[0002] Cable laying is the process of laying and installing cables along a surveyed route to form a cable line. Depending on the application, it can be divided into several laying methods, including overhead, underground (pipes and direct burial), underwater, wall, and tunnel laying. The most common method is underground cable laying via pipes or direct burial. Before laying, cables are usually wound on I-shaped cable reels. During laying, cable laying equipment is used to replace manual labor, pulling the cable from the reel and assisting workers in completing the cable installation. Currently, the most common cable laying equipment on the market is the clamping traction machine, which uses a geared motor to drive a rotating traction belt, clamping the cable to achieve traction. For example, a cable laying traction device for power supply companies, application number CN202223567119.6, includes a drive motor, with the device body fixedly connected to the back of the drive motor. The device body includes a main body shell, a right auxiliary roller fixedly connected to one side of the main body shell, a left auxiliary roller fixedly connected to the other side of the main body shell, and a motor placement platform fixedly connected to the center of one side of the front of the main body shell. As the weather gradually turns colder, especially in northern regions where icing has already occurred, the insulation and sheath of cables, which are mostly made of polyvinyl chloride or low-smoke halogen-free polyolefin materials, will shrink, become hard and brittle in low-temperature environments. Their dimensions will also shrink, and stress will increase. During traction and straightening, as well as corner traction, cables are highly susceptible to cracking and damage. Therefore, using the aforementioned common types of cable laying devices presents the following problems: Traditional cable pulling machines mainly use traction force to drive the cable reel to rotate and complete the cable delivery and laying. This method of laying cables requires a large pulling force, and the traction speed of the cable pulling machine and the rotation speed of the cable reel are different and asynchronous, which can easily lead to problems such as cable entanglement, cracking and damage. Since cable laying usually takes a long time and is mostly done outdoors, the cables pulled out of the insulation room will cool down and harden, increasing the difficulty of construction and also resulting in cable cracking and damage. Summary of the Invention

[0003] The purpose of this invention is to provide a cable laying device for power supply companies, so as to solve the problems mentioned in the background art that existing cable laying devices are prone to cable cracking and damage under low temperature conditions and have high construction difficulty.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a cable laying device for power supply companies, comprising a base and a cable reel. A cable conveying mechanism for pulling the cable is fixedly installed on one side of the top of the base. A power box is fixedly installed on one side of the connection between the base and the cable conveying mechanism. A battery rack is fixedly installed inside the power box. A storage battery is fixedly installed in the middle of the battery rack. A sealing cover is hinged to the back of the power box. A guide mechanism for guiding the cable is fixedly installed in the middle of the top of the base. An unwinding bracket is fixedly installed on the other side of the top of the base. A reel groove is opened in the middle of the bottom end of the unwinding bracket. A support beam is fixedly installed in the middle of the reel groove. A synchronous auxiliary mechanism for driving the cable reel to rotate synchronously is installed on the support beam. A cable heating mechanism for heating the cable to be laid is fixedly installed at the end of the unwinding bracket near the cable conveying mechanism.

[0005] Preferably, a control box is fixedly installed on one side of the front of the unwinding bracket, a switch plate is fixedly installed on the surface of the control box, and a lifting switch, a power switch, a temperature adjustment knob and an ignition switch are fixedly installed on the surface of the switch plate.

[0006] Preferably, the cable conveying mechanism includes a cable traction frame, with electro-hydraulic cylinders fixedly installed on both sides of the top of the cable traction frame, a clamping frame fixedly installed between two electro-hydraulic cylinders, multiple cable limiting rollers rotatably connected to the bottom of the clamping frame, and electric heating tubes fixedly installed between adjacent cable limiting rollers. An internal tooth drive roller and multiple support rollers are rotatably connected to the bottom of the inner wall of the cable traction frame, and a high-temperature resistant traction belt is drivingly connected between the internal tooth drive roller and the multiple support rollers. A power transmission component for driving the internal tooth drive roller and the synchronous auxiliary mechanism to work synchronously is fixedly installed on the back of the cable traction frame. Both electro-hydraulic cylinders are electrically connected to the battery through a lifting switch, and the electric heating tubes are electrically connected to the battery through a temperature adjustment knob. The cable limiting rollers are configured to be wide at both ends and narrow in the middle.

[0007] Preferably, the power transmission assembly is fixedly installed inside the power box. The power transmission assembly includes a geared motor, a central shaft is fixedly installed at the output end of the geared motor, a large sprocket and a first small sprocket are fixedly installed on the central shaft, a second driven sprocket is fixedly installed at one end of the internal gear drive roller, a first chain is driven between the large sprocket and the second driven sprocket, a third chain is meshed with the outer side of the first small sprocket, and the geared motor is electrically connected to the battery through a power switch.

[0008] Preferably, the synchronization auxiliary mechanism includes two hexagonal shafts, each with a first driven sprocket fixedly mounted at one end. A second chain meshes between the two first driven sprockets. A second small sprocket is fixedly mounted on the outer side of one of the first driven sprockets. The end of the third chain away from the first small sprocket meshes with the outer side of the second small sprocket. Two support roller assemblies for supporting the cable reel are sleeved in the middle of each of the two first small sprockets. A hidden compartment is provided at the bottom of the back of the unwinding bracket. One end of the hidden compartment has a connecting hole extending into the power box. The two first driven sprockets and the second chain are both located inside the hidden compartment. The third chain is located inside the connecting hole. A cover plate is fixedly mounted on the outer side of the hidden compartment by screws.

[0009] Preferably, the support roller assembly includes an I-beam roller, the I-beam roller has a hexagonal shaft hole in the middle, and a resistance-increasing rubber sleeve is fixedly provided on the inner side of the I-beam roller.

[0010] Preferably, the cable heating mechanism includes a liquefied petroleum gas (LPG) cylinder and a cylinder valve fixedly installed on the top of the LPG cylinder. The outlet of the LPG cylinder is fixedly connected to a gas guide hose. One end of the gas guide hose is fixedly connected to a connecting conduit. One end of the connecting conduit is fixedly provided with an arc-shaped nozzle. A flame arrestor valve is fixedly installed at the connection between the connecting conduit and the arc-shaped nozzle. A nozzle is fixedly installed on the inner side of the arc-shaped nozzle. An electromagnetic igniter is fixedly installed on the nozzle. The electromagnetic igniter is electrically connected to a battery via an ignition switch. The arc-shaped nozzle is fixedly mounted on an unwinding bracket.

[0011] Preferably, anti-detachment roller frames are fixedly installed on both sides of the top of the unwinding bracket, and a safety shaft is placed between the two anti-detachment roller frames. Pins are engaged on both sides of the safety shaft, and the safety shaft is installed on the anti-detachment roller frame by means of the pins.

[0012] Preferably, the guiding mechanism includes a guide frame, a support rod is fixedly disposed in the middle of the guide frame, and a guide roller is rotatably connected to the middle of the support rod.

[0013] Preferably, a plurality of casters are fixedly installed at the bottom of the base, and a handling handle is fixedly provided at both ends of the base.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This cable laying device integrates the cable traction structure and the cable turntable frame on the same base and is driven by the same motor. It can achieve uniform cable traction and laying while the cable turntable rotates synchronously at a uniform speed. Unwinding and traction are carried out simultaneously, which helps to reduce the traction force during cable laying. The improved cable traction structure can provide auxiliary heating and insulation for the cable during traction, which helps to reduce the probability of cable cracking and damage. It features high safety, stable driving and improved cable laying efficiency. The cable heating mechanism makes the cable relatively soft, easy to bend and lay, which can reduce the problems of circuit shrinkage and stress concentration, improve the durability of the cable, and thus ensure the stability of cable laying and the service life of the cable after laying. It also reduces the difficulty of laying cables in winter. The laying device can be moved flexibly, which is convenient for construction and transportation, and the construction is simple and labor-saving. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cable laying device of the present invention in use; Figure 2 This is a front view structural schematic diagram of the cable laying device of the present invention; Figure 3 This is a schematic diagram of the synchronization auxiliary mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the supporting roller assembly of the present invention; Figure 5 This is a schematic diagram of the cable conveying mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the clamping frame of the present invention; Figure 7 This is a schematic diagram of the cable heating mechanism of the present invention; Figure 8 This is an enlarged view of part A of the present invention.

[0016] In the diagram: 1. Base; 2. Unwinding bracket; 3. Anti-derailment roller frame; 4. Cable reel; 5. Safety shaft; 6. Cable heating mechanism; 61. Liquefied gas cylinder; 62. Cylinder valve; 63. Gas guide hose; 64. Connecting conduit; 65. Arc-shaped nozzle; 66. Nozzle; 67. Electromagnetic igniter; 68. Flame arrestor; 7. Pin; 8. Cable conveying mechanism; 81. Cable traction frame; 82. Internal gear drive roller; 83. Support roller; 84. High-temperature resistant traction belt; 85. Pressing frame; 86. Cable limiting roller; 87. Electro-hydraulic cylinder; 88. Gear motor; 89. Central shaft; 810. Large sprocket; 811. First small sprocket; 812. First chain; 813. Electric... 9. Heating element; 10. Control box; 11. Guide frame; 12. Support rod; 13. Guide roller; 14. Moving wheel; 15. Handle; 16. Power box; 17. Battery rack; 18. Storage battery; 19. Sealing cover; 20. Hidden compartment; 20. Synchronization auxiliary mechanism; 201. Hexagonal rotating shaft; 202. Support roller assembly; 2021. I-beam rotating wheel; 2022. Resistance-increasing rubber sleeve; 2023. Hexagonal shaft hole; 203. First driven sprocket; 204. Second chain; 205. Second small sprocket; 21. Cover plate; 22. Third chain; 23. Switch plate; 24. Support beam frame; 25. Reel groove; 26. Connecting hole; 27. Second driven sprocket. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] Please see Figure 1-8 This invention provides a cable laying device for power supply companies, including a base 1 and a cable reel 4. A cable conveying mechanism 8 for pulling the cable is fixedly installed on one side of the top of the base 1. A power box 15 is fixedly installed on one side of the connection between the base 1 and the cable conveying mechanism 8. A battery rack 16 is fixedly installed inside the power box 15. A storage battery 17 is fixedly installed in the middle of the battery rack 16. A sealing cover 18 is hinged to the back of the power box 15. A guide mechanism for guiding the cable is fixedly installed in the middle of the top of the base 1. A cable unwinding support is fixedly installed on the other side of the top of the base 1. The unwinding support 2 has a reel groove 25 at the middle of its bottom end. A support beam 24 is fixedly installed in the middle of the reel groove 25. A synchronous auxiliary mechanism 20 for driving the cable reel 4 to rotate synchronously is installed on the support beam 24. A cable heating mechanism 6 for heating the cable to be laid is fixedly installed at one end of the unwinding support 2 near the cable conveying mechanism 8. A control box 9 is fixedly installed on one side of the front of the unwinding support 2. A switch plate 23 is fixedly installed on the surface of the control box 9. A lifting switch, a power switch, a temperature adjustment knob and an ignition switch are fixedly installed on the surface of the switch plate 23. In use, the cable laying device is placed at the laying location. The cable to be laid is then hoisted onto the unwinding support 2 along with the cable reel 4 using a crane. The end of the cable is pulled out from the cable reel 4, passed through the guide mechanism, and placed in the middle of the cable conveying mechanism 8. Then, the cable heating mechanism 6 is turned on by the ignition switch, and the equipment is started by the power switch. At this time, the cable conveying mechanism 8 will work. Under the action of traction, the cable to be laid will continuously extend and unwind as the cable reel 4 rotates. With the assistance of the staff, the cable laying is completed.

[0019] See Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 8 Furthermore, the cable conveying mechanism 8 includes a cable traction frame 81. Electro-hydraulic cylinders 87 are fixedly installed on both sides of the top of the cable traction frame 81. A clamping frame 85 is fixedly installed between two electro-hydraulic cylinders 87. Multiple cable limiting rollers 86 are rotatably connected to the bottom of the clamping frame 85. Electric heating tubes 813 are fixedly installed between adjacent cable limiting rollers 86. An internal toothed drive roller 82 and multiple support rollers 83 are driveably connected to the bottom of the inner wall of the cable traction frame 81. A high-temperature resistant traction belt 84 is driveably connected between the internal toothed drive roller 82 and the multiple support rollers 83. A power transmission component for driving the internal toothed drive roller 82 and the synchronous auxiliary mechanism 20 to work synchronously is fixedly installed on the back of the cable traction frame 81. Both electro-hydraulic cylinders 87 are connected via… The lifting switch is electrically connected to the storage battery 17. The electric heating tube 813 is electrically connected to the storage battery 17 through the temperature adjustment knob. The cable limiting roller 86 is set to be wide at both ends and narrow in the middle. The power transmission assembly is fixedly installed inside the power box 15. The power transmission assembly includes a geared motor 88. A central shaft 89 is fixedly installed at the output end of the geared motor 88. A large sprocket 810 and a first small sprocket 811 are fixedly installed on the central shaft 89. A second driven sprocket 27 is fixedly installed at one end of the internal gear drive roller 82. A first chain 812 is connected between the large sprocket 810 and the second driven sprocket 27. A third chain 22 is meshed with the outer side of the first small sprocket 811. The geared motor 88 is electrically connected to the storage battery 17 through a power switch. In use, the cable is laid across the cable traction frame 81 and placed on the high-temperature resistant traction belt 84. Then, the operator controls two electro-hydraulic cylinders 87 to work simultaneously via a lifting switch. The electro-hydraulic cylinders 87 push the clamping frame 85 down slowly until the cable limiting roller 86 contacts and clamps the cable to be laid. The cable limiting roller 86 is wider at both ends and narrower in the middle, relying on the narrow middle section to directly contact the cable. During traction, this effectively prevents the cable from slipping off from the side, ensuring continuous traction. After setting the heating temperature of the electric heating element 813 via the temperature adjustment knob, the power switch is turned on. At this time, the reduction motor 88 will work, driving the central shaft 89 to rotate. The central shaft 89 then drives the large sprocket 810 and the first small sprocket 811 to rotate simultaneously. The large sprocket 810 drives the second driven sprocket 27 to rotate via the first chain 812. The second driven sprocket 27 then drives the internal tooth drive roller 82 to move. The internal tooth drive roller 82 drives the high-temperature resistant traction belt 84 to rotate cyclically among multiple support rollers 83. The high-temperature resistant traction belt 84 also has drive teeth on its inner side to ensure the stability of power transmission. The support rollers 83 support the high-temperature resistant traction belt 84. Due to the compression between the high-temperature resistant traction belt 84 and the cable limiting roller 86, the cable to be laid is pulled. During the pulling process, the electric heating tube 813 is positioned directly above the moving cable to heat the cable and maintain the surface temperature of the cable, so that the cable remains in a flexible state during the pulling process, preventing the cable from cracking and being damaged.

[0020] See Figure 1 , Figure 2 , Figure 3 and Figure 4 Furthermore, the synchronization auxiliary mechanism 20 includes two hexagonal rotating shafts 201, one end of which is fixedly provided with a first driven sprocket 203. A second chain 204 is meshed between the two first driven sprockets 203. A second small sprocket 205 is fixedly provided on the outer side of one of the first driven sprockets 203. The end of the third chain 22 away from the first small sprocket 811 is meshed with the outer side of the second small sprocket 205. Two support roller assemblies 202 for supporting the cable reel 4 are sleeved in the middle of the two first small sprockets 811. The bottom of the back of the unwinding bracket 2 is provided with a hidden compartment 19. One end of the hidden compartment 19 is provided with a connecting hole 26 extending into the power box 15. Two first driven sprockets 203 and a second chain 204 are both located inside the hidden compartment 19. A third chain 22 is located inside the connecting hole 26. A cover plate 21 is fixed to the outside of the hidden compartment 19 by screws. The support roller assembly 202 includes an I-beam roller 2021. A hexagonal shaft hole 2023 is provided in the middle of the I-beam roller 2021. A friction-increasing rubber sleeve 2022 is fixed to the inner side of the I-beam roller 2021. In use, the I-beam sprockets 2021 can slide back and forth on the surface of the hexagonal shaft 201. During the placement of the cable reel 4, when the bottom of the cable reel 4 is about to contact the hexagonal shaft 201, the spacing of the I-beam sprockets 2021 is adjusted according to the width of the cable reel 4 so that the lowered cable reel 4 can be positioned precisely between the four I-beam sprockets 2021. The sliding I-beam sprocket design is suitable for placing cable reels 4 of different widths, improving the applicability of the cable laying device. During cable pulling, the first small sprocket 811 drives the second small sprocket 205 through the transmission of the third chain 22. The first driven sprocket 203 is driven to rotate. Since the two first driven sprockets 203 are meshed with the second chain 204, the two hexagonal shafts 201 will rotate simultaneously in the same direction, thereby causing the four I-beam rollers 2021 to rotate simultaneously. The four I-beam rollers 2021 are divided into two groups and rotate from both sides of the cable reel 4. Since the bottom of the cable reel 4 is in direct contact with the resistance-increasing rubber sleeve 2022, under the adjustment of the squeeze rotation, the cable reel 4 will also rotate at a uniform speed, thus slowly unwinding. The unwinding speed is the same as the speed of the traction cable, and the synchronous movement can reduce the traction force of cable laying and avoid the problem of damage to the cable caused by strong pulling.

[0021] See Figure 1 , Figure 2 and Figure 7 Furthermore, the cable heating mechanism 6 includes a liquefied gas cylinder 61 and a cylinder valve 62 fixedly installed on the top of the liquefied gas cylinder 61. The outlet of the liquefied gas cylinder 61 is fixedly connected to a gas guide hose 63. One end of the gas guide hose 63 is fixedly connected to a connecting conduit 64. One end of the connecting conduit 64 is fixedly provided with an arc-shaped nozzle 65. A flame arrestor valve 68 is fixedly installed at the connection between the connecting conduit 64 and the arc-shaped nozzle 65. A nozzle 66 is fixedly installed on the inner side of the arc-shaped nozzle 65. An electromagnetic igniter 67 is fixedly installed on the nozzle 66. The electromagnetic igniter 67 is electrically connected to the storage battery 17 through an ignition switch. The arc-shaped nozzle 65 is fixedly installed on the unwinding bracket 2. During use, workers can open the gas cylinder valve 62 and control the electromagnetic igniter 67 via the ignition switch to generate an electric spark, igniting the circulating combustible gas. The combustible gas is then sprayed directly onto the moving cable through the nozzle 66, increasing the cable surface temperature. This spraying method can rapidly raise the cable surface temperature to around 200°C, maintaining the cable surface temperature and keeping the cable in a flexible state during traction. Heating one side of the cable reel 4 can also increase the ambient temperature, keeping the cable wound on the reel 4 in a heated state, preventing the cable sheath from hardening and becoming brittle. In traditional low-temperature cable laying, workers typically use a handheld flame gun to spray directly onto the pulled cable to increase its temperature. This method replaces manual spraying, avoiding the problem of uneven heating caused by manual spraying. Furthermore, workers do not need to be in close contact with the heated cable, making it safer and reducing the difficulty of cable laying work.

[0022] See Figure 1 and Figure 2 Furthermore, anti-detachment roller frames 3 are fixedly installed on both sides of the top of the unwinding bracket 2, and a safety shaft 5 is placed between the two anti-detachment roller frames 3. Pins 7 are engaged on both sides of the safety shaft 5, and the safety shaft 5 is installed on the anti-detachment roller frame 3 by means of the pins 7. In use, after the cable is laid on the four support roller assemblies 202, the operator takes out the safety shaft 5, passes it through the middle of the cable reel 4, and lays it on the two anti-detachment roller frames 3. Then, the safety shaft 5 is fixed with pins 7. The safety shaft 5 does not directly contact the cable reel 4 and does not affect the rotation of the cable reel 4. The function of the safety shaft 5 is to provide safety protection. If it falls off when placed on the cable reel 4, even if the cable reel 4 is separated from the support roller assembly 202, the safety shaft 5 will provide auxiliary support to further improve safety.

[0023] See Figure 1 and Figure 2 Furthermore, the guiding mechanism includes a guide frame 10, a support rod 11 is fixedly installed in the middle of the guide frame 10, a guide roller 12 is rotatably connected in the middle of the support rod 11, a plurality of movable wheels 13 are fixedly installed at the bottom end of the base 1, and a handling handle 14 is fixedly installed at both ends of the base 1. In use, after the cable is unwound from the cable reel 4, it is guided by the guide roller 12 to enter the cable conveying mechanism 8, completing the traction and conveying of the cable. At the same time, the guide roller 12 can move the unwound cable downwards and pass through the arc-shaped nozzle 65, so that the cable is fully heated by the spray. The cable laying device is integrated on the same base 1. Before and after construction, the workers can move the laying device to the transport vehicle through the handling handle 14. The laying device can be moved by the moving wheels 13, which is convenient to use and flexible to move.

[0024] In this embodiment of the application, during cable laying in winter, the laying time should be selected between 10:00 AM and 2:00 PM. The cable pulled from the insulation room is promptly erected on the unwinding support 2 by a crane. After starting the equipment, the reduction motor 88 will work, driving the central shaft 89 to rotate. The central shaft 89 drives the large sprocket 810 and the first small sprocket 811 to rotate simultaneously. The large sprocket 810 drives the second driven sprocket 27 to rotate through the transmission of the first chain 812. In turn, the second driven sprocket 27 drives the internal tooth drive roller 82 to move. The internal tooth drive roller 82 drives the high-temperature resistant traction belt 84 to move in multiple directions. The support rollers 83 rotate in a cycle to complete the traction and laying of the cable. The first small sprocket 811 drives the second small sprocket 205 through the transmission of the third chain 22. The second small sprocket 205 drives the first driven sprocket 203 to rotate. Since the two first driven sprockets 203 are meshed with the second chain 204, the two hexagonal shafts 201 will rotate simultaneously in the same direction, driving the cable reel 4 to rotate. At this time, the cable reel 4 will move synchronously with the cable conveying mechanism 8, unwinding and pulling at the same time, which can avoid the problem of cable tangling. By using auxiliary heating, the difficulty of laying cables in winter can be reduced.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cable laying device for power supply companies, comprising a base (1) and a cable reel (4), characterized in that: A cable conveying mechanism (8) for pulling the cable is fixedly installed on one side of the top of the base (1). A power box (15) is fixedly installed on one side of the connection between the base (1) and the cable conveying mechanism (8). A battery rack (16) is fixedly installed inside the power box (15). A storage battery (17) is fixedly installed in the middle of the battery rack (16). A sealing box cover (18) is hinged to the back of the power box (15). A guide mechanism for guiding the cable is fixedly installed in the middle of the top of the base (1). A winding bracket (2) is fixedly installed on the other side of the top of the base (1). A reel groove (25) is opened in the middle of the bottom end of the winding bracket (2). A support beam (24) is fixedly installed in the middle of the reel groove (25). A synchronous auxiliary mechanism (20) for driving the cable reel (4) to rotate synchronously is installed on the support beam (24). A cable heating mechanism (6) for heating the cable to be laid is fixedly installed at one end of the winding bracket (2) near the cable conveying mechanism (8).

2. The cable laying device for power supply companies according to claim 1, characterized in that: A control box (9) is fixedly installed on one side of the front of the unwinding bracket (2). A switch plate (23) is fixedly installed on the surface of the control box (9). A lifting switch, a power switch, a temperature adjustment knob, and an ignition switch are fixedly installed on the surface of the switch plate (23).

3. A cable laying device for power supply companies according to claim 2, characterized in that: The cable conveying mechanism (8) includes a cable traction frame (81). Two electrically controlled hydraulic cylinders (87) are fixedly installed on both sides of the top of the cable traction frame (81). A clamping frame (85) is fixedly installed between two of the electrically controlled hydraulic cylinders (87). Multiple cable limiting rollers (86) are rotatably connected to the bottom of the clamping frame (85). Electric heating tubes (813) are fixedly installed between adjacent cable limiting rollers (86). An internal toothed drive roller (82) and multiple support rollers (83) are rotatably connected to the bottom of the inner wall of the cable traction frame (81). A high-temperature resistant traction belt (84) is connected between the internal tooth drive roller (82) and multiple support rollers (83). A power transmission component for driving the internal tooth drive roller (82) and the synchronous auxiliary mechanism (20) to work synchronously is fixedly installed on the back of the cable traction frame (81). Both of the electro-hydraulic cylinders (87) are electrically connected to the battery (17) through lifting switches. The electric heating tube (813) is electrically connected to the battery (17) through a temperature adjustment knob. The cable limiting roller (86) is set to be wide at both ends and narrow in the middle.

4. A cable laying device for power supply companies according to claim 3, characterized in that: The power transmission assembly is fixedly installed inside the power box (15). The power transmission assembly includes a geared motor (88). A central shaft (89) is fixedly installed at the output end of the geared motor (88). A large sprocket (810) and a first small sprocket (811) are fixedly installed on the central shaft (89). A second driven sprocket (27) is fixedly installed at one end of the internal gear drive roller (82). A first chain (812) is connected between the large sprocket (810) and the second driven sprocket (27). A third chain (22) is meshed with the outer side of the first small sprocket (811). The geared motor (88) is electrically connected to the battery (17) through a power switch.

5. A cable laying device for power supply companies according to claim 4, characterized in that: The synchronization auxiliary mechanism (20) includes two hexagonal shafts (201), one end of each hexagonal shaft (201) is fixedly provided with a first driven sprocket (203), and a second chain (204) is meshed between the two first driven sprockets (203). A second small sprocket (205) is fixedly provided on the outside of one of the first driven sprockets (203). The end of the third chain (22) away from the first small sprocket (811) is meshed with the outside of the second small sprocket (205). The two first small sprockets (811) Two support roller assemblies (202) for supporting the cable reel (4) are fitted in the middle of the reel. A hidden compartment (19) is provided at the bottom of the back of the unwinding bracket (2). One end of the hidden compartment (19) is provided with a connecting hole (26) extending into the power box (15). Two first driven sprockets (203) and a second chain (204) are both located inside the hidden compartment (19). The third chain (22) is located inside the connecting hole (26). A cover plate (21) is fixed to the outside of the hidden compartment (19) by screws.

6. A cable laying device for power supply companies according to claim 5, characterized in that: The support roller assembly (202) includes an I-beam roller (2021), a hexagonal shaft hole (2023) is provided in the middle of the I-beam roller (2021), and a friction-increasing rubber sleeve (2022) is fixedly provided on the inner side of the I-beam roller (2021).

7. A cable laying device for power supply companies according to claim 2, characterized in that: The cable heating mechanism (6) includes a liquefied gas cylinder (61) and a gas cylinder valve (62) fixedly installed on the top of the liquefied gas cylinder (61). The gas outlet of the liquefied gas cylinder (61) is fixedly connected to a gas guide hose (63). One end of the gas guide hose (63) is fixedly connected to a connecting conduit (64). One end of the connecting conduit (64) is fixedly provided with an arc-shaped nozzle (65). A flame arrestor valve (68) is fixedly installed at the connection between the connecting conduit (64) and the arc-shaped nozzle (65). A nozzle (66) is fixedly installed on the inner side of the arc-shaped nozzle (65). An electromagnetic igniter (67) is fixedly installed on the nozzle (66). The electromagnetic igniter (67) is electrically connected to the battery (17) through an ignition switch. The arc-shaped nozzle (65) is fixedly installed on the unwinding bracket (2).

8. A cable laying device for power supply companies according to claim 1, characterized in that: Anti-detachment roller frames (3) are fixedly installed on both sides of the top of the unwinding bracket (2). A safety shaft (5) is placed between the two anti-detachment roller frames (3). Pins (7) are engaged on both sides of the safety shaft (5). The safety shaft (5) is installed on the anti-detachment roller frame (3) by means of the pins (7).

9. A cable laying device for power supply companies according to claim 1, characterized in that: The guiding mechanism includes a guide frame (10), a support rod (11) is fixedly provided in the middle of the guide frame (10), and a guide roller (12) is rotatably connected in the middle of the support rod (11).

10. A cable laying device for power supply companies according to claim 1, characterized in that: Multiple casters (13) are fixedly installed at the bottom of the base (1), and handles (14) are fixedly installed at both ends of the base (1).

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