Cable pay-off device

Abstract

The invention discloses a cable pay-off device, and belongs to the technical field of cable pay-off. Comprising a frame and a pay-off shaft, the pay-off shaft is provided with a containing cavity in the axis direction, the inner wall of the containing cavity is fixedly connected with a first electric push rod, one end of the first electric push rod is fixedly connected with an extension shaft, the extension shaft comprises a center shaft body and a protruding strip installed on the outer surface of the center shaft body, and the extension shaft is inserted into the containing cavity; one end of the pay-off shaft is fixedly connected with a first baffle disc, an angle adjusting assembly capable of adjusting the angle of the pay-off shaft is installed on the frame, the angle adjusting assembly comprises a support, the interior of the support is rotationally connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a first support, and the first baffle disc is rotationally installed outside the first support through a fixing shaft. Two pay-off modes are adopted, the functions are diversified, a worker can select according to actual working requirements, and the pay-off efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to a cable pay-off device, belonging to the technical field of cable pay-off. Background Art

[0002] A cable pay-off rack is a key device for supporting and managing cable reels in the power, communication and related industries. During the pay-off process of coiled electric wires and cables, due to their long length, a pay-off device is required to unwind the cable.

[0003] Existing pay-off devices generally include two symmetric support frames and a pay-off shaft. There is a lifting platform installed thereon, and a rotating shaft seat and a load-bearing shaft are installed on the platform. The platform is also equipped with a starting auxiliary device. With the drive of the driving device, the pay-off shaft can be rotated. However, during the existing pay-off process, generally, a staff member pulls one end of the cable, and the pay-off shaft rotates to pay off and lay the cable. The function is relatively single, and there is only one pay-off method. When the cable needs to be laid in the side ditches on both sides of the road, the above pay-off method will affect the pay-off efficiency during the pay-off process due to the blocking of the retaining discs at both ends of the pay-off shaft. For this reason, we propose a cable pay-off device. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a cable pay-off device, which solves the problems that the existing pay-off device has a relatively single function and only one pay-off method, and when the cable needs to be laid in the side ditches on both sides of the road, the above pay-off method will affect the pay-off efficiency due to the blocking of the retaining discs at both ends of the pay-off shaft during the pay-off process.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A cable pay-off device includes a vehicle frame and a pay-off shaft. The pay-off shaft is provided with a receiving cavity along the axial direction. The inner wall of the receiving cavity is fixedly connected with an electric push rod I. One end of the electric push rod I is fixedly connected with an extension shaft. The extension shaft includes a central shaft body and a raised strip installed on the outer surface of the central shaft body. The extension shaft is inserted into the interior of the receiving cavity. One end of the pay-off shaft is fixedly connected with a retaining disc I. An angle adjustment assembly for adjusting the angle of the pay-off shaft is installed on the vehicle frame. The angle adjustment assembly includes a support. A rotating shaft is rotatably connected inside the support. A support I is fixedly connected to the outer surface of the rotating shaft. The retaining disc I is rotatably installed outside the support I through a fixed shaft. The rotating shaft is rotated through a driving assembly.

[0007] By adopting the above technical solution, when conventional wire laying is required, the entire wire laying device remains stationary. The staff can put the cable on the wire laying shaft, and then the staff pulls one end of the cable, and the wire laying shaft rotates, driving the cable to rotate for wire laying work, facilitating the unwinding of the cable and making it convenient for the staff to use. When the cable needs to be placed inside the trench on the side of the road, the staff can control the rotation of the rotating shaft to rotate the first bracket by 90 degrees and adjust the wire laying shaft to a vertically upward state. Then the staff puts the cable to be laid on the wire laying shaft, and the staff can place one end of the cable inside the trench. Then the staff pushes the device to move along the extension direction of the trench. During the rotation of the wire laying shaft, the cable can be laid, and during the wire laying process, the staff behind pushes the cable towards the trench, and the cable can be laid inside the trench. Since there is no obstruction of the first retaining disc in this wire laying method, the wire laying of the cable is smoother. With two wire laying methods and diverse functions, the staff can choose according to the actual work requirements, which can effectively improve the wire laying efficiency.

[0008] The present invention is further provided that: the driving component includes a limiting rail, a rack, and an electric push rod II. The rack is slidably connected inside the limiting rail, and the electric push rod II is fixedly connected to the limiting rail. One end of the electric push rod II is fixedly connected to a fixing plate, and the fixing plate is fixedly installed on the rack. A limiting hole is formed on the surface of the limiting rail where the electric push rod II is installed, and the fixing plate is slidably connected inside the limiting hole. One end of the rotating shaft is fixedly connected to a gear III, and the gear III is meshed with the rack.

[0009] By adopting the above technical solution, when controlling the rotation of the rotating shaft, the staff can start the electric push rod II, and the electric push rod II can drive the fixing plate to move, thereby controlling the sliding of the rack inside the limiting rail. The sliding of the rack can drive the gear III to rotate, thereby controlling the rotation of the rotating shaft and controlling the rotation of the first bracket to change the state of the wire laying shaft, making the adjustment more convenient and labor-saving.

[0010] The present invention is further provided that: a gear assembly is installed on the first bracket. The gear assembly includes a gear I fixedly connected to a fixed shaft. The outer surface of the gear I is meshed with a gear II. A fixed frame is fixedly installed on the first bracket, and the inner wall of the fixed frame is fixedly connected to a servo motor. The gear I is fixedly connected to the output end of the servo motor.

[0011] By adopting the above technical solution, when controlling the rotation of the wire laying shaft, the servo motor starts, which can drive the gear II to rotate and drive the gear I to rotate, thereby controlling the rotation of the wire laying shaft. During the rotation of the wire laying shaft, it is convenient to lay the cable.

[0012] The present invention is further configured such that: a chute is provided inside the vehicle frame along the axial direction of the wire dispensing shaft. A slider is slidably connected inside the chute. A positioning rail is installed on the slider. A second bracket is slidably connected inside the positioning rail. A control assembly is installed inside the second bracket.

[0013] By adopting the above technical solution, when the staff adjusts the length of the extension shaft extending out of the wire dispensing shaft, the staff can directly start the first electric push rod. The first electric push rod can push the extension shaft to extend out of the wire dispensing shaft. The lengths of the extension shaft and the wire dispensing shaft can accommodate wires of different widths. And when adjusting the length, the slider can slide inside the chute, making it more convenient and labor-saving to adjust the extended length of the extension shaft.

[0014] The present invention is further configured such that: the control assembly includes a threaded rod. The two ends of the threaded rod are rotatably connected inside the positioning rail. One end of the threaded rod is fixedly connected to a control motor. The threaded rod is threadedly connected inside the second bracket. One side of the positioning rail is fixedly connected to a motor bracket. The control motor is fixedly installed on the inner wall of the motor bracket.

[0015] By adopting the above technical solution, when the control motor is started, the threaded rod can be rotated to control the second bracket to slide inside the positioning rail, facilitating the second bracket to remove the blockage of the wire dispensing shaft, and making it more convenient for the staff to put the wire on the wire dispensing shaft.

[0016] The present invention is further configured such that: a positioning shaft is rotatably connected inside the second bracket. One end of the positioning shaft is fixedly connected to a second retaining disc. An opening is provided on the outer surface of the second retaining disc. A clamping groove is provided on the inner wall of the opening. One end of the extension shaft away from the first electric push rod is fixedly connected to a clamping block, and the clamping block is inserted inside the clamping groove.

[0017] By adopting the above technical solution, during the movement of the second bracket, the second retaining disc is driven to move, so that the clamping block on the extension shaft can pass through the opening on the second retaining disc and then be inserted into the clamping groove, thereby realizing the support of the second retaining disc for the end of the extension shaft away from the first electric push rod, making the wire dispensing shaft rotate more stably during wire dispensing rotation.

[0018] The present invention is further configured such that: the number of supports is two. The two supports are fixedly connected by a support bracket. The support bracket and the vehicle frame are fixedly connected by a reinforcing rod.

[0019] By adopting the above technical solution, after the first bracket rotates 90 degrees, it can contact the upper surface of the support plate. Then the support plate can support the first bracket. Coupled with the reinforcing rod that can support and reinforce the support plate, the stability of the first bracket is better after rotating 90 degrees.

[0020] The present invention is further configured such that: a battery box is installed on the vehicle frame. A storage battery is provided inside the battery box. A sealing cover is inserted inside the battery box.

[0021] By adopting the above technical solution, the battery box can protect the storage battery, and the storage battery enables the device to be used without being externally connected to a power supply, facilitating the cable laying work.

[0022] The present invention is further configured such that universal wheels are fixedly installed at the four corners of the side of the vehicle frame facing the ground, and the number of universal wheels is four.

[0023] By adopting the above technical solution, the setting of the universal wheels facilitates the movement of the device.

[0024] The present invention is further configured such that a hand push frame is fixedly connected to the vehicle frame, and a rubber anti-slip sleeve is fixedly connected to the handrail of the hand push frame.

[0025] By adopting the above technical solution, when the staff pushes the hand push frame, due to the action of the rubber anti-slip sleeve, the impact force on the hand during the pushing process can be reduced, and the anti-slip effect can be achieved.

[0026] The beneficial effects of the present invention are as follows: When conventional cable laying is required, the entire cable laying device remains stationary. The staff can put the cable on the cable laying shaft, and then the staff pulls one end of the cable, and the cable laying shaft rotates to drive the cable to rotate, so as to carry out the cable laying work, facilitating the unfolding of the cable, and it is convenient for the staff to use. When the cable needs to be placed inside the trench on the side of the road, the staff can control the rotation of the rotating shaft to rotate the first bracket by ninety degrees, and adjust the cable laying shaft to a vertically upward state. Then the staff puts the cable to be laid on the cable laying shaft, and the staff can put one end of the cable inside the trench. Then the staff pushes the device to move along the extension direction of the trench. During the rotation of the cable laying shaft, the cable can be laid, and during the cable laying process, the staff behind pushes the cable towards the trench, and the cable can be laid inside the trench. Since there is no block plate one to block, the cable laying is smoother. By adopting two cable laying methods, the functions are diverse, and the staff can choose according to the actual work requirements, which can effectively improve the cable laying efficiency. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the first form of the present invention;

[0028] Figure 2 It is a sectional axonometric view of the cable laying shaft in the present invention;

[0029] Figure 3 It is a schematic structural diagram of the second form of the present invention;

[0030] Figure 4 It is a schematic left axonometric structural diagram of the first form of the present invention;

[0031] Figure 5 This is a schematic diagram of the rear axonometric structure of the first form of the present invention;

[0032] Figure 6 This is the second partial enlarged structural schematic diagram of the present invention;

[0033] Figure 7 It is one of the partial enlarged structural schematic diagrams of the present invention;

[0034] Figure 8 This is the third schematic diagram of the partial enlarged structure of the present invention;

[0035] Figure 9 This is the fourth schematic diagram of the partially enlarged structure of the present invention.

[0036] In the figure: 1, pay-off shaft; 2, storage chamber; 3, electric push rod 1; 4, extension shaft; 401, central shaft; 402, raised strip; 5, baffle plate 1; 6, frame; 7, support; 8, rotating shaft; 9, bracket 1; 10, limit rail; 11, rack; 12, electric push rod 2; 13, fixing plate; 14, gear 3; 15, limit hole; 16, gear 1; 17, gear 2; 18, fixing frame; 19, Servo motor; 20, slide; 21, slider; 22, bracket 2; 23, threaded rod; 24, control motor; 25, motor bracket; 26, positioning shaft; 27, baffle plate 2; 28, slot; 29, block; 30, support bracket; 31, reinforcement support rod; 32, battery box; 33, battery; 34, sealing cover; 35, universal wheel; 36, trolley; 37, rubber anti-slip sleeve; 38, positioning rail. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0038] Example 1

[0039] like Figure 1 and Figure 2 As shown, a cable pay-off device includes a frame 6 and a pay-off shaft 1, the pay-off shaft 1 is provided with a storage chamber 2 along the axial direction, the inner wall of the storage chamber 2 is fixedly connected with an electric push rod 3, one end of the electric push rod 3 is fixedly connected with an extension shaft 4, the extension shaft 4 includes a central axis body 401 and a raised strip 402 installed on the outer surface of the central axis body 401, the raised strip 402 can not only play a limiting role when the extension shaft 4 moves inside the storage chamber 2, but also support the cable loop, and the extension shaft 4 is inserted into the inside of the storage chamber 2.

[0040] like Figure 3 and Figure 5As shown in the figure, a first retaining disk 5 is fixedly connected to one end of the wire pay-off shaft 1. An angle adjustment assembly is installed on the vehicle frame 6. The angle adjustment assembly includes a support 7. A rotating shaft 8 is rotatably connected inside the support 7. A first support 9 is fixedly connected to the outer surface of the rotating shaft 8. The first retaining disk 5 is rotatably installed outside the first support 9 through a fixed shaft. The rotating shaft 8 is rotated through a driving assembly.

[0041] When conventional wire pay-off is required, the whole wire pay-off device remains stationary. The staff can put the cable on the wire pay-off shaft 1, and then the staff pulls one end of the cable. The wire pay-off shaft 1 rotates, driving the cable to rotate, and performing the wire pay-off work on the cable, facilitating the unfolding of the cable and making it convenient for the staff to use.

[0042] When the cable needs to be placed inside the trench on the side of the road, the staff can control the rotation of the rotating shaft 8 to rotate the first support 9 by ninety degrees, adjusting the wire pay-off shaft 1 to a vertically upward state. Then the staff puts the cable to be laid on the wire pay-off shaft 1, and the staff can put one end of the cable inside the trench. Then the staff pushes the device along the extension direction of the trench. During the rotation of the wire pay-off shaft 1, the cable can be paid off. And during the pay-off process, the staff behind pushes the cable towards the trench, and the cable can be laid inside the trench. Since there is no obstruction of the first retaining disk 5 in this wire pay-off method, the cable pay-off is smoother. With two wire pay-off methods and diverse functions, the staff can choose according to the actual work requirements, which can effectively improve the wire pay-off efficiency.

[0043] As Figure 4 and Figure 6 shown, the driving assembly includes a limiting rail 10, a rack 11 and a second electric push rod 12. The rack 11 is slidably connected inside the limiting rail 10. The second electric push rod 12 is fixedly connected to the limiting rail 10. One end of the second electric push rod 12 is fixedly connected to a fixing plate 13. The fixing plate 13 is fixedly installed on the rack 11. A limiting hole 15 is opened on the surface of the limiting rail 10 where the second electric push rod 12 is installed. The fixing plate 13 is slidably connected inside the limiting hole 15. One end of the rotating shaft 8 is fixedly connected to a third gear 14. The third gear 14 is meshed with the rack 11. When controlling the rotation of the rotating shaft 8, the staff can start the second electric push rod 12. The second electric push rod 12 can drive the fixing plate 13 to move, thereby controlling the rack 11 to slide inside the limiting rail 10. The sliding of the rack 11 can drive the third gear 14 to rotate, thereby controlling the rotation of the rotating shaft 8, and controlling the rotation of the first support 9 to change the state of the wire pay-off shaft 1, making the adjustment more convenient and labor-saving.

[0044] As Figure 1As shown in the figure, a gear assembly is installed on the first bracket 9. The gear assembly includes a first gear 16 fixedly connected to a fixed shaft. A second gear 17 is meshed with the outer surface of the first gear 16. A fixed bracket 18 is fixedly installed on the first bracket 9. The inner wall of the fixed bracket 18 is fixedly connected to a servo motor 19. The first gear 16 is fixedly connected to the output end of the servo motor 19. When controlling the rotation of the wire pay-off shaft 1, the servo motor 19 is started, which can drive the second gear 17 to rotate, drive the first gear 16 to rotate, and control the rotation of the wire pay-off shaft 1. During the rotation of the wire pay-off shaft 1, it is convenient to pay off the cable.

[0045] As Figure 4 and Figure 7 shown in the figure, a chute 20 is opened in the interior of the vehicle frame 6 along the axial direction of the wire pay-off shaft 1. A slider 21 is slidably connected to the interior of the chute 20. A positioning rail 38 is installed on the slider 21. A second bracket 22 is slidably connected to the interior of the positioning rail 38. A control assembly is installed inside the second bracket 22. The control assembly includes a threaded rod 23. The two ends of the threaded rod 23 are rotatably connected to the interior of the positioning rail 38. One end of the threaded rod 23 is fixedly connected to a control motor 24. The threaded rod 23 is threadedly connected to the interior of the second bracket 22. A threaded hole is opened on the second bracket 22 along the extending direction of the positioning rail 38, and the internal thread of the threaded hole is adapted to the external thread on the threaded rod 23. One side of the positioning rail 38 is fixedly connected to a motor bracket 25. The control motor 24 is fixedly installed on the inner wall of the motor bracket 25. When the control motor 24 is started, the threaded rod 23 can be rotated to control the sliding of the second bracket 22 inside the positioning rail 38, facilitating the removal of the blockage of the wire pay-off shaft 1 by the second bracket 22, and enabling the staff to more conveniently put the cable on the wire pay-off shaft 1. When the staff adjusts the length of the extension shaft 4 extending from the wire pay-off shaft 1, the staff can directly start the first electric push rod 3. The first electric push rod 3 can push the extension shaft 4 to extend from the wire pay-off shaft 1. The lengths of the extension shaft 4 and the wire pay-off shaft 1 can accommodate cables of different widths. And when adjusting the length, the slider 21 can slide inside the chute 20, making it more convenient and labor-saving to adjust the extending length of the extension shaft 4.

[0046] As Figure 8As shown, a positioning shaft 26 is rotatably connected inside the second support 22. One end of the positioning shaft 26 is fixedly connected to a second retaining disk 27. An opening is formed on the outer surface of the second retaining disk 27, and a clamping groove 28 is formed on the inner wall of the opening. One end of the extension shaft 4 away from the first electric push rod 3 is fixedly connected to a clamping block 29, and the clamping block 29 is inserted into the inside of the clamping groove 28. During the movement of the second support 22, the second retaining disk 27 is driven to move, so that the clamping block 29 on the extension shaft 4 can pass through the opening on the second retaining disk 27 and then be inserted into the inside of the clamping groove 28, realizing the support of the second retaining disk 27 for one end of the extension shaft 4 away from the first electric push rod 3, and making the wire reel 1 rotate more stably during the wire unwinding process.

[0047] As Figure 1 and Figure 9 shown, the number of the supports 7 is two. The two supports 7 are fixedly connected by a support bracket 30. The support bracket 30 and the vehicle frame 6 are fixedly connected by a reinforcing strut 31. A battery box 32 is installed on the vehicle frame 6. A storage battery 33 is arranged inside the battery box 32. The storage battery 33 can be electrically connected to the first electric push rod 3, the second electric push rod 12, the servo motor 19, and the control motor 24 through wires to provide power support. A sealing cover 34 is inserted into the inside of the battery box 32, and the sealing cover 34 can shield and protect the storage battery 33.

[0048] As Figure 5 shown, universal wheels 35 are fixedly installed at the four corners of the side of the vehicle frame 6 facing the ground. The universal wheels 35 are selected with a self-locking structure. When self-locking is required, the staff steps on the pressing piece to generate resistance by the friction between the pressing piece and the wheel, which can inhibit the rotation of the wheel and ensure the stability of the device placement. The number of the universal wheels 35 is four. A hand push frame 36 is fixedly connected to the vehicle frame 6, and a rubber anti-slip sleeve 37 is fixedly connected to the armrest of the hand push frame 36.

[0049] When conventional wire laying is required, the universal wheels 35 are locked to keep the device stationary. Then, the staff can first start the first electric push rod 3 according to the width of the cable reel. The first electric push rod 3 can push the extension shaft 4 to move. At the same time, the extension shaft 4 can push the second retaining disc 27 to move, so that the slider 21 can slide inside the chute 20, and the length of the extension shaft 4 extending out of the wire laying shaft 1 can be changed. Then, the staff starts the control motor 24. The control motor 24 can drive the threaded rod 23 to rotate, so that the second support 22 can slide inside the positioning rail 38, and the clamping block 29 is separated from the clamping groove 28. Then, the second retaining disc 27 can remove the shielding of the extension shaft 4. The staff can directly put the cable loop on the wire laying shaft 1. After the cable loop is placed, the control motor 24 is started again, so that the second support 22 can be reset, and the clamping block 29 is inserted into the clamping groove 28 again. Then, the second retaining disc 27 can support the end of the extension shaft 4. The servo motor 19 drives the second gear 17 to rotate. Through the transmission of the first gear 16, the wire laying shaft 1 and the cable loop can rotate for wire laying operation.

[0050] When the cable needs to be placed inside the trench on the side of the road, the staff starts the control motor 24. The control motor 24 drives the second support 22 to move, separating the clamping groove 28 from the clamping block 29. Then, the second electric push rod 12 is started. The second electric push rod 12 drives the fixing plate 13 to move, so that the rack 11 can slide inside the limit rail 10, and the third gear 14 can rotate, rotating the first support 9 by ninety degrees to adjust the wire laying shaft 1 to a vertically upward state. Then, the staff puts the cable to be laid on the wire laying shaft 1. Then, the staff starts the servo motor 19. The servo motor 19 drives the second gear 17 to rotate, making the first gear 16 rotate, and the wire laying shaft 1 can rotate to lay the cable. The staff can put one end of the cable inside the trench, and then push the device along the extension direction of the trench. During the rotation of the wire laying shaft 1, the cable can be laid, and during the wire laying process, the staff behind can push the cable towards the trench, and the cable can be laid inside the trench. Since there is no obstruction of the first retaining disc 5 in this wire laying method, the cable laying is smoother.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope claimed by the present invention. The scope claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable pay-off device, comprising a vehicle frame (6) and a pay-off shaft (1), characterized in that: The wire pay-off shaft (1) is provided with a storage cavity (2) along the axial direction. The inner wall of the storage cavity (2) is fixedly connected with an electric push rod one (3). One end of the electric push rod one (3) is fixedly connected with an extension shaft (4). The extension shaft (4) includes the central shaft body (401) and the protruding strips (402) installed on the outer surface of the central shaft body (401). The extension shaft (4) is inserted into the interior of the storage cavity (2). One end of the wire pay-off shaft (1) is fixedly connected with a first retaining disc (5). An angle adjustment assembly for adjusting the angle of the wire pay-off shaft (1) is installed on the vehicle frame (6). The angle adjustment assembly includes a support (7). A rotating shaft (8) is rotatably connected inside the support (7). A first support (9) is fixedly connected to the outer surface of the rotating shaft (8). The first retaining disc (5) is rotatably installed outside the first support (9) through a fixed shaft. The rotating shaft (8) is rotated by a driving assembly.

2. The cable pay-off device according to claim 1, characterized in that: The driving assembly includes a limit rail (10), a rack (11) and an electric push rod two (12). The rack (11) is slidably connected inside the limit rail (10). The electric push rod two (12) is fixedly connected to the limit rail (10). One end of the electric push rod two (12) is fixedly connected with a fixing plate (13). The fixing plate (13) is fixedly installed on the rack (11). A limit hole (15) is opened on the surface of the limit rail (10) where the electric push rod two (12) is installed. The fixing plate (13) is slidably connected inside the limit hole (15). One end of the rotating shaft (8) is fixedly connected with a third gear (14). The third gear (14) is meshed with the rack (11).

3. A cable pay-off device according to claim 1, characterized in that: A gear assembly for driving the wire pay-off shaft (1) to rotate is installed on the first support (9). The gear assembly includes a first gear (16) fixedly connected to the fixed shaft. A second gear (17) is meshed with the outer surface of the first gear (16). A fixed frame (18) is fixedly installed on the first support (9). A servo motor (19) is fixedly connected to the inner wall of the fixed frame (18). The first gear (16) is fixedly connected to the output end of the servo motor (19).

4. A cable pay-off device according to claim 1, characterized in that: A chute (20) is opened inside the vehicle frame (6) along the axial direction of the wire pay-off shaft (1). A slider (21) is slidably connected inside the chute (20). A positioning rail (38) is installed on the slider (21). A second support (22) is slidably connected inside the positioning rail (38). A control assembly for controlling the second support (22) to slide inside the positioning rail (38) is installed inside the second support (22).

5. A cable pay-off device according to claim 4, characterized in that: The control assembly includes a threaded rod (23). The two ends of the threaded rod (23) are rotatably connected inside the positioning rail (38). One end of the threaded rod (23) is fixedly connected with a control motor (24). The threaded rod (23) is threadedly connected inside the second support (22). A motor support (25) is fixedly connected to one surface of the positioning rail (38). The control motor (24) is fixedly installed on the inner wall of the motor support (25).

6. The cable pay-off device according to claim 4, characterized in that: A positioning shaft (26) is rotatably connected inside the second bracket (22). One end of the positioning shaft (26) is fixedly connected to a second retaining disc (27). An opening is formed on the outer surface of the second retaining disc (27), and a clamping groove (28) is formed on the inner wall of the opening. One end of the extension shaft (4) away from the first electric push rod (3) is fixedly connected to a clamping block (29), and the clamping block (29) is inserted into the clamping groove (28).

7. A cable pay-off device according to claim 1, characterized in that: The number of the supports (7) is two. The two supports (7) are fixedly connected by a support bracket (30), and the support bracket (30) and the vehicle frame (6) are fixedly connected by a reinforcing support rod (31).

8. A cable pay-off device according to claim 1, characterized in that: A battery box (32) is installed on the vehicle frame (6). A storage battery (33) is arranged inside the battery box (32), and a sealing cover (34) is inserted into the battery box (32).

9. The cable pay-off device according to claim 1, characterized in that: Four universal wheels (35) are fixedly installed at the four corners of the side of the vehicle frame (6) facing the ground.

10. A cable pay-off device according to claim 1, characterized in that: A hand push frame (36) is fixedly connected to the vehicle frame (6), and a rubber anti-slip sleeve (37) is fixedly connected to the armrest of the hand push frame (36).

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