Line conveying device for power transmission and transformation project

Abstract

The line conveying device for the power transmission and transformation project comprises a bottom plate, a base, a tray, an insertion rod, a winding drum, a clamping and fixing mechanism, a limiting mechanism and a movable supporting mechanism. The clamping and fixing mechanism comprises a first vertical frame, a vertical plate, a push rod, a spring and a clamping and fixing plate, the first vertical frame is fixedly arranged on the top face of the bottom plate, the vertical plate is inserted into the first vertical frame and horizontally slides along the first vertical frame, the push rod penetrates through the side wall of the first vertical frame and is fixedly connected with the vertical plate and the clamping and fixing plate, and the push rod is sleeved with the spring; one end of the spring is fixedly connected with the side wall of the first vertical frame, the other end of the spring is fixedly connected with the outer wall of the clamping plate, and the inner wall of the clamping plate contacts with the surface of the cable. The clamping and fixing plate, the first vertical frame, the vertical plate, the spring and the push rod are used in cooperation to make the clamping and fixing plate make contact with the surface of a cable, the spring belongs to an elastic element, thrust is generated between the first vertical frame and the clamping and fixing plate to make the clamping and fixing plate stably clamp the cable, and the situation that the surface of the winding drum is scattered due to the fact that the cable is not tightly wound enough is prevented; the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission and transformation engineering, and more specifically, to a line conveying device for power transmission and transformation engineering. Background Art

[0002] Power transmission and transformation engineering is a general term for the construction of transmission lines and the installation of transformers. The higher the voltage level of the power transmission and transformation project, the greater the power transmitted and the farther the transmission distance. A power transmission and transformation project with a voltage exceeding 330,000 volts is called "extra-high voltage power transmission and transformation". [[ID=⑨]] <

[0003] The patent with the authorization announcement number CN217229735U discloses a line conveying device for power transmission and transformation engineering, which includes a base. Both sides of the base are fixedly connected with upright frames. A drum is rotatably installed between the two upright frames on both sides, and a U-shaped bracket is fixedly connected. A movable seat that can move horizontally is installed on the U-shaped bracket. Two wire pay-off wheels are installed on the movable seat. The two wire pay-off wheels rotate synchronously in opposite directions to draw out the cable wound on the drum and convey it forward, and the distance between the two wire pay-off wheels is adjustable. During the wire pay-off process of this patent, the two wire pay-off wheels closely contact the cable from both sides, and through synchronous rotation in opposite directions, the cable wound on the drum is drawn out and conveyed forward, with high work efficiency, safety and reliability. In addition, the two wire pay-off wheels can move horizontally, which can adapt to the position change of the cable during the wire pay-off process, so as to efficiently convey the cable. In addition, the distance between the two wire pay-off wheels is adjustable, which can meet the conveying requirements of cables of various diameters. However, when this patent is in a stationary state after the cable is unwound, the drum is likely to rotate, thereby driving the cable to be released, resulting in the cable becoming loose, so that the cable on the surface of the conveying roller is not wound tightly enough, causing the cable on the surface of the drum to be scattered. Summary of the Utility Model

[0004] The utility model aims to provide a line conveying device for power transmission and transformation engineering to overcome the problem that the cable is not wound tightly enough, resulting in the scattering of the surface of the drum.

[0005] A line conveying device for power transmission and transformation engineering includes a bottom plate, a base, a tray, a plug rod, a drum, a clamping mechanism, a limiting mechanism and a movable support mechanism. The base is fixedly arranged on the top surface of the bottom plate. The tray is rotatably connected to the base. The plug rod is fixedly arranged on the top surface of the base. The drum is sleeved on the plug rod and contacts the top surface of the tray. A cable is wound on the surface of the drum. The clamping mechanism is arranged on the top surface of the bottom plate and contacts the surface of the cable. The limiting mechanism is arranged on the top surface of the bottom plate. The movable support mechanism is arranged at the four corners of the side wall of the bottom plate;

[0006] The clamping mechanism includes a first vertical frame, a vertical plate, a push rod, a spring and a clamping plate. The first vertical frame is fixedly arranged on the top surface of the bottom plate, the vertical plate is inserted into the inside of the first vertical frame and slides horizontally along the first vertical frame, one end of the push rod is fixedly connected to the side wall of the vertical plate, the other end of the push rod passes through the side wall of the first vertical frame and is fixedly connected to the outer wall of the clamping plate, the spring is sleeved on the push rod, one end of the spring is fixedly connected to the side wall of the first vertical frame, the other end of the spring is fixedly connected to the outer wall of the clamping plate, and the inner wall of the clamping plate contacts the surface of the cable.

[0007] Furthermore, the clamping mechanism also includes a first threaded rod, which is inserted into the first vertical frame and rotatably connected to the first vertical frame. The vertical plate is sleeved on the first threaded rod and slides horizontally along the first vertical frame through the first threaded rod.

[0008] Furthermore, one end of the first threaded rod passes through the side wall of the first vertical frame and is fixedly provided with a first motor for rotating the first threaded rod.

[0009] Furthermore, a rotating shaft is fixedly provided on the bottom surface of the tray, and the rotating shaft is inserted into the interior of the base and is rotatably connected to the base.

[0010] Furthermore, the limiting mechanism includes a second vertical frame, a horizontal plate, a horizontal frame, a mounting frame and a pay-off wheel. The second vertical frame is fixedly arranged on the top surface of the bottom plate, the two ends of the horizontal plate are inserted into the two second vertical frames and slide vertically along the second vertical frames, the horizontal frame is fixedly arranged on the top surface of the horizontal plate, a first slider is fixedly arranged at the bottom end of the mounting frame, the first slider is inserted into the horizontal frame and slides horizontally along the horizontal frame, and the pay-off wheel is inserted on the mounting frame and is rotatably connected to the mounting frame.

[0011] Furthermore, the limiting mechanism also includes a second threaded rod and a bidirectional screw rod. The second threaded rod is inserted into the second vertical frame and is rotatably connected to the second vertical frame. Both ends of the horizontal plate are sleeved on the second threaded rod and vertically slide along the second vertical frame through the second threaded rod. The bidirectional screw rod is inserted into the horizontal frame and is rotatably connected to the horizontal frame. The first slider is sleeved on the bidirectional screw rod and slides horizontally along the horizontal frame through the bidirectional screw rod.

[0012] Furthermore, the top end of the second threaded rod passes through the top surface of the second vertical frame and is fixedly provided with a second motor for rotating the second threaded rod, and one end of the bidirectional screw rod passes through the side wall of the horizontal frame and is fixedly provided with a third motor for rotating the bidirectional screw rod.

[0013] Furthermore, the movable support mechanism includes a support leg, a movable wheel, a second slider, a connecting rod and a support seat. The support leg is fixedly arranged on the side wall of the base plate, the movable wheel is fixedly arranged at the bottom end of the support leg, the second slider is inserted into the inside of the support leg and slides vertically along the support leg, the two ends of the second slider pass through the support leg and are fixedly connected to the two connecting rods, and the support seat is fixedly arranged at the bottom end of the two connecting rods.

[0014] Furthermore, the mobile support mechanism also includes a third threaded rod, which is inserted into the support leg and rotatably connected to the support leg. The second slider is sleeved on the third threaded rod and slides vertically along the support leg through the third threaded rod.

[0015] Furthermore, the top end of the third threaded rod passes through the top surface of the leg and is fixedly provided with a fourth motor for rotating the third threaded rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] ① The line transmission device for power transmission and transformation projects provided by the utility model is provided with a clamping plate. The first vertical frame, the vertical plate, the spring and the push rod are used in conjunction with each other to make the clamping plate contact the surface of the cable. Since the spring is an elastic element, a thrust is generated between the first vertical frame and the clamping plate so that the clamping plate stably clamps the cable, preventing the cable from being wound loosely and causing the drum surface to become disordered, thereby improving the stability of the device.

[0018] ② The line conveying device for power transmission and transformation projects provided by the utility model provides a support seat, and the legs, the second slider and the connecting rod are used in conjunction to lower the support seat to support the device, thereby preventing the device from shifting under the action of external force, while protecting the moving wheels and improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a line transmission device for power transmission and transformation engineering.

[0021] Figure 2 It is a cross-sectional view of the internal structure of the base in the present utility model.

[0022] Figure 3 It is a specific structural diagram of the limiting mechanism in the utility model.

[0023] Figure 4 It is a schematic diagram of the specific structure of the mobile support mechanism in the utility model.

[0024] In the figure: 1. bottom plate; 2. base; 3. tray; 4. plug-in rod; 5. reel; 6. cable; 7. first vertical frame; 8. vertical plate; 9. push rod; 10. spring; 11. clamping plate; 12. first threaded rod; 13. first motor; 14. rotating shaft; 15. second vertical frame; 16. horizontal plate; 17. horizontal frame; 18. mounting frame; 19. pay-off wheel; 20. first slider; 21. second threaded rod; 22. bidirectional screw rod; 23. second motor; 24. third motor; 25. support leg; 26. moving wheel; 27. second slider; 28. connecting rod; 29. ​​support seat; 30. third threaded rod; 31. fourth motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, a line transmission device for power transmission and transformation engineering includes a base plate 1, a base 2, a tray 3, a rod 4, a drum 5, a clamping mechanism, a limiting mechanism and a mobile support mechanism. The base 2 is fixedly arranged on the top surface of the base plate 1, the tray 3 is rotatably connected to the base 2, the rod 4 is fixedly arranged on the top surface of the base 2, the drum 5 is sleeved on the rod 4 and in contact with the top surface of the tray 3, the surface of the drum 5 is wound with a cable 6, the clamping mechanism is arranged on the top surface of the base plate 1 and in contact with the surface of the cable 6, and the limiting mechanism is arranged on The top surface of the bottom plate 1 and the movable support mechanism are arranged at the four corners of the side wall of the bottom plate 1. Specifically, the top surface of the bottom plate 1 is welded with a base 2, the tray 3 is rotatably connected to the base 2, the top surface of the base 2 is welded with an insertion rod 4, the reel 5 is sleeved on the insertion rod 4 and in contact with the top surface of the tray 3, the surface of the reel 5 is wound with a cable 6, the top surface of the bottom plate 1 is provided with a clamping mechanism and in contact with the surface of the cable 6, the top surface of the bottom plate 1 is provided with a limiting mechanism, and the four corners of the side wall of the bottom plate 1 are provided with a movable support mechanism.

[0027] The clamping mechanism includes a first vertical frame 7, a vertical plate 8, a push rod 9, a spring 10 and a clamping plate 11. The first vertical frame 7 is fixedly arranged on the top surface of the bottom plate 1. The vertical plate 8 is inserted into the inside of the first vertical frame 7 and slides horizontally along the first vertical frame 7. One end of the push rod 9 is fixedly connected to the side wall of the vertical plate 8. The other end of the push rod 9 passes through the side wall of the first vertical frame 7 and is fixedly connected to the outer wall of the clamping plate 11. The spring 10 is sleeved on the push rod 9. One end of the spring 10 is fixedly connected to the side wall of the first vertical frame 7. The other end of the spring 10 is fixedly connected to the outer wall of the clamping plate 11. The wall is in contact with the surface of the cable 6. Specifically, a first vertical frame 7 is welded to the top surface of the bottom plate 1, and a vertical plate 8 is inserted into the inside of the first vertical frame 7 and slides vertically along the first vertical frame 7. One end of the push rod 9 is welded to the side wall of the vertical plate 8, and the other end of the push rod 9 passes through the side wall of the first vertical frame 7 and is welded to the outer wall of the clamping plate 11. A spring 10 is sleeved on the push rod 9, and one end of the spring 10 is welded to the side wall of the first vertical frame 7, and the other end of the spring 10 is welded to the outer wall of the clamping plate 11. The inner wall of the clamping plate 11 is in contact with the surface of the cable 6.

[0028] In the present invention, by providing a clamping plate 11, the first vertical frame 7, the vertical plate 8, the spring 10 and the push rod 9 are used in conjunction with each other to make the clamping plate 11 contact the surface of the cable 6. Since the spring 10 is an elastic element, a thrust is generated between the first vertical frame 7 and the clamping plate 11 so that the clamping plate 11 stably clamps the cable 6, preventing the cable 6 from being wound not compactly enough to cause the surface of the reel 5 to be disorderly, thereby improving the stability of the device.

[0029] The clamping mechanism also includes a first threaded rod 12, which is inserted into the interior of the first mullion 7 and rotatably connected to the first mullion 7. The riser 8 is sleeved on the first threaded rod 12 and slides horizontally along the first mullion 7 through the first threaded rod 12. Specifically, the first threaded rod 12 is inserted into the interior of the first mullion 7 and rotatably connected to the first mullion 7. A through hole is opened on the riser 8. The riser 8 is sleeved on the first threaded rod 12 through the through hole and slides horizontally along the first mullion 7 through the first threaded rod 12.

[0030] One end of the first threaded rod 12 passes through the side wall of the first vertical frame 7 and is fixedly provided with a first motor 13 for rotating the first threaded rod 12. Preferably, the first motor 13 has a self-locking function. The first motor 13 is fixed to the side wall of the first vertical frame 7 through a motor seat. One end of the first threaded rod 12 passes through the side wall of the first vertical frame 7 and is welded to the output shaft of the first motor 13.

[0031] like Figure 2 As shown, a rotating shaft 14 is fixedly provided on the bottom surface of the tray 3, and the rotating shaft 14 is inserted into the inside of the base 2 and rotatably connected to the base 2. Specifically, the rotating shaft 14 is welded on the bottom surface of the tray 3, and the rotating shaft 14 is inserted into the inside of the base 2 and rotatably connected to the base 2.

[0032] like Figure 3 As shown, the limiting mechanism includes a second vertical frame 15, a horizontal plate 16, a horizontal frame 17, a mounting frame 18 and a pay-off wheel 19. The second vertical frame 15 is fixedly arranged on the top surface of the bottom plate 1, and both ends of the horizontal plate 16 are inserted into the two second vertical frames 15 and slide vertically along the second vertical frames 15. The horizontal frame 17 is fixedly arranged on the top surface of the horizontal plate 16. The bottom end of the mounting frame 18 is fixedly provided with a first slider 20. The first slider 20 is inserted into the interior of the horizontal frame 17 and slides horizontally along the horizontal frame 17. The pay-off wheel 19 is inserted into the mounting frame 18. The bottom plate 1 is welded with a second vertical frame 15, and the two ends of the horizontal plate 16 are inserted into the interior of the two second vertical frames 15 and slide vertically along the second vertical frames 15. The top surface of the horizontal plate 16 is welded with a horizontal frame 17, and the bottom end of the mounting frame 18 is welded with a first slider 20, which is inserted into the interior of the horizontal frame 17 and slides horizontally along the horizontal frame 17. The pay-off wheel 19 is inserted into the mounting frame 18 and is rotatably connected to the mounting frame 18.

[0033] The limiting mechanism also includes a second threaded rod 21 and a bidirectional screw rod 22. The second threaded rod 21 is inserted into the second vertical frame 15 and is rotatably connected to the second vertical frame 15. Both ends of the horizontal plate 16 are sleeved on the second threaded rod 21 and vertically slide along the second vertical frame 15 through the second threaded rod 21. The bidirectional screw rod 22 is inserted into the horizontal frame 17 and is rotatably connected to the horizontal frame 17. The first slider 20 is sleeved on the bidirectional screw rod 22 and slides horizontally along the horizontal frame 17 through the bidirectional screw rod 22. The threaded rod 21 is inserted into the interior of the second vertical frame 15 and is rotatably connected to the second vertical frame 15. Through holes are opened at both ends of the horizontal plate 16. The horizontal plate 16 is sleeved on the second threaded rod 21 through the through holes and slides vertically along the second vertical frame 15 through the second threaded rod 21. The bidirectional screw rod 22 is inserted into the interior of the horizontal frame 17 and is rotatably connected to the horizontal frame 17. A through hole is opened on the first slider 20. The first slider 20 is sleeved on the bidirectional screw rod 22 through the through hole and slides horizontally along the horizontal frame 17 through the bidirectional screw rod 22.

[0034] The top end of the second threaded rod 21 passes through the top surface of the second vertical frame 15 and is fixedly provided with a second motor 23 for rotating the second threaded rod 21. Preferably, the second motor 23 has a self-locking function. One end of the bidirectional screw rod 22 passes through the side wall of the horizontal frame 17 and is fixedly provided with a third motor 24 for rotating the bidirectional screw rod 22. Preferably, the third motor 24 has a self-locking function, which is specifically manifested in that the second motor 23 is fixed to the top surface of the second vertical frame 15 through a motor seat, the top end of the second threaded rod 21 passes through the top surface of the second vertical frame 15 and is welded to the output shaft of the second motor 23, the third motor 24 is fixed to the side wall of the horizontal frame 17 through the motor seat, and one end of the bidirectional screw rod 22 passes through the side wall of the horizontal frame 17 and is welded to the output shaft of the third motor 24.

[0035] like Figure 4As shown, the movable support mechanism includes a support leg 25, a movable wheel 26, a second slider 27, a connecting rod 28 and a support seat 29. The support leg 25 is fixedly arranged on the side wall of the base plate 1, the movable wheel 26 is fixedly arranged on the bottom end of the support leg 25, the second slider 27 is inserted into the support leg 25 and slides vertically along the support leg 25, the two ends of the second slider 27 pass through the support leg 25 and are fixedly connected to the two connecting rods 28, and the support seat 29 is fixedly arranged at the bottom end of the two connecting rods 28. Specifically, the side wall of the base plate 1 is welded with the support leg 25, the bottom end of the support leg 25 is welded with the movable wheel 26, the second slider 27 is inserted into the inside of the support leg 25 and slides vertically along the support leg 25, the two ends of the second slider 27 pass through the support leg 25 and are welded to the two connecting rods 28, and the bottom end of the two connecting rods 28 is welded with a support seat 29.

[0036] In the present invention, by setting a support seat 29, the support legs 25, the second slider 27 and the connecting rod 28 are used in conjunction with each other to lower the support seat 29 to support the device, thereby preventing the device from shifting under the action of external force, and at the same time protecting the moving wheel 26 to improve the stability of the device.

[0037] The mobile support mechanism also includes a third threaded rod 30, which is inserted into the support leg 25 and is rotatably connected to the support leg 25. The second slider 27 is sleeved on the third threaded rod 30 and slides vertically along the support leg 25 through the third threaded rod 30. Specifically, the third threaded rod 30 is inserted into the support leg 25 and is rotatably connected to the support leg 25. A through hole is opened on the second slider 27. The second slider 27 is sleeved on the third threaded rod 30 through the through hole and slides vertically along the support leg 25 through the third threaded rod 30.

[0038] The top end of the third threaded rod 30 passes through the top surface of the support leg 25 and is fixedly provided with a fourth motor 31 for rotating the third threaded rod 30. Preferably, the fourth motor 31 has a self-locking function, which is specifically manifested in that the fourth motor 31 is fixed to the top surface of the support leg 25 through the motor seat, and the top end of the third threaded rod 30 passes through the top surface of the support leg 25 and is welded to the output shaft of the fourth motor 31.

[0039] The working principle of the line transmission device for power transmission and transformation engineering in this embodiment is:

[0040] The reel 5 is sleeved on the insertion rod 4, the first motor 13 rotates the output shaft, the first threaded rod 12 rotates with the output shaft, the vertical plate 8 rotates with the first threaded rod 12 and slides horizontally along the first vertical frame 7, the push rod 9 moves horizontally with the vertical plate 8, the clamping plate 11 moves horizontally with the push rod 9 until the inner wall of the clamping plate 11 contacts the surface of the cable 6, and the device moves to the specified position through the moving wheel 26. The fourth motor 31 rotates the output shaft, the third threaded rod 30 rotates with the output shaft, the second slider 27 rotates with the third threaded rod 30 and slides vertically along the support leg 25, the connecting rod 28 moves vertically with the second slider 27, and the support seat 29 moves vertically with the connecting rod 28 to the specified position and contacts, the third motor 24 rotates the output shaft, the bidirectional screw rod 22 rotates with the output shaft, and the first slider 20 moves with the bidirectional screw rod 22 The first motor 13 rotates the output shaft, the first threaded rod 12 rotates along the output shaft, the vertical plate 8 rotates along the first vertical frame 7 and slides horizontally, the push rod 9 moves horizontally along the vertical plate 8, and the clamping plate 11 moves horizontally along the push rod 9 until the inner wall of the clamping plate 11 leaves the surface of the cable 6. The second motor 23 rotates the output shaft, the second threaded rod 21 rotates along the output shaft, the horizontal plate 16 rotates along the second threaded rod 21 and slides vertically along the second vertical frame 15. The horizontal frame 17 moves vertically along the horizontal plate 16, the mounting frame 18 moves vertically along the horizontal frame 17, and the pay-off wheel 19 moves vertically along the mounting frame 18 to pay out the wire.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A line transmission device for power transmission and transformation engineering, characterized by: The utility model comprises a bottom plate (1), a base (2), a tray (3), an insertion rod (4), a reel (5), a clamping mechanism, a limiting mechanism and a mobile support mechanism, wherein the base (2) is fixedly arranged on the top surface of the bottom plate (1), the tray (3) is rotatably connected to the base (2), the insertion rod (4) is fixedly arranged on the top surface of the base (2), the reel (5) is sleeved on the insertion rod (4) and contacts the top surface of the tray (3), a cable (6) is wound on the surface of the reel (5), the clamping mechanism is arranged on the top surface of the bottom plate (1) and contacts the surface of the cable (6), the limiting mechanism is arranged on the top surface of the bottom plate (1), and the mobile support mechanism is arranged at the four corners of the side wall of the bottom plate (1); The clamping mechanism comprises a first vertical frame (7), a vertical plate (8), a push rod (9), a spring (10) and a clamping plate (11); the first vertical frame (7) is fixedly arranged on the top surface of the base plate (1); the vertical plate (8) is inserted into the inside of the first vertical frame (7) and slides horizontally along the first vertical frame (7); one end of the push rod (9) is fixedly connected to the side wall of the vertical plate (8); the other end of the push rod (9) passes through the side wall of the first vertical frame (7) and is fixedly connected to the outer wall of the clamping plate (11); the spring (10) is sleeved on the push rod (9); one end of the spring (10) is fixedly connected to the side wall of the first vertical frame (7); the other end of the spring (10) is fixedly connected to the outer wall of the clamping plate (11); the inner wall of the clamping plate (11) contacts the surface of the cable (6).

2. A line transmission device for power transmission and transformation engineering according to claim 1, characterized in that: The clamping mechanism further comprises a first threaded rod (12), the first threaded rod (12) being inserted into the first vertical frame (7) and being rotatably connected to the first vertical frame (7), the vertical plate (8) being sleeved on the first threaded rod (12) and sliding horizontally along the first vertical frame (7) through the first threaded rod (12).

3. A line transmission device for power transmission and transformation engineering according to claim 2, characterized in that: One end of the first threaded rod (12) passes through the side wall of the first vertical frame (7) and is fixedly provided with a first motor (13) for rotating the first threaded rod (12).

4. The line transmission device for power transmission and transformation engineering according to claim 1, characterized in that: A rotating shaft (14) is fixedly provided on the bottom surface of the tray (3); the rotating shaft (14) is inserted into the interior of the base (2) and is rotatably connected to the base (2).

5. The line transmission device for power transmission and transformation engineering according to claim 1, characterized in that: The limiting mechanism comprises a second vertical frame (15), a horizontal plate (16), a horizontal frame (17), a mounting frame (18) and a pay-off wheel (19), wherein the second vertical frame (15) is fixedly arranged on the top surface of the bottom plate (1), the two ends of the horizontal plate (16) are inserted into the two second vertical frames (15) and slide vertically along the second vertical frames (15), the horizontal frame (17) is fixedly arranged on the top surface of the horizontal plate (16), a first slider (20) is fixedly arranged at the bottom end of the mounting frame (18), the first slider (20) is inserted into the inside of the horizontal frame (17) and slides horizontally along the horizontal frame (17), and the pay-off wheel (19) is inserted on the mounting frame (18) and is rotatably connected to the mounting frame (18).

6. A line transmission device for power transmission and transformation engineering according to claim 5, characterized in that: The limiting mechanism further includes a second threaded rod (21) and a bidirectional screw rod (22), wherein the second threaded rod (21) is inserted into the interior of the second vertical frame (15) and is rotatably connected to the second vertical frame (15), both ends of the horizontal plate (16) are sleeved on the second threaded rod (21) and vertically slide along the second vertical frame (15) through the second threaded rod (21), the bidirectional screw rod (22) is inserted into the interior of the horizontal frame (17) and is rotatably connected to the horizontal frame (17), and the first slider (20) is sleeved on the bidirectional screw rod (22) and horizontally slides along the horizontal frame (17) through the bidirectional screw rod (22).

7. A line transmission device for power transmission and transformation engineering according to claim 6, characterized in that: The top end of the second threaded rod (21) passes through the top surface of the second vertical frame (15) and is fixedly provided with a second motor (23) for rotating the second threaded rod (21); one end of the bidirectional screw rod (22) passes through the side wall of the horizontal frame (17) and is fixedly provided with a third motor (24) for rotating the bidirectional screw rod (22).

8. The line transmission device for power transmission and transformation engineering according to claim 1, characterized in that: The movable support mechanism comprises a support leg (25), a movable wheel (26), a second slider (27), a connecting rod (28) and a support seat (29); the support leg (25) is fixedly arranged on the side wall of the base plate (1); the movable wheel (26) is fixedly arranged at the bottom end of the support leg (25); the second slider (27) is inserted into the support leg (25) and slides vertically along the support leg (25); both ends of the second slider (27) pass through the support leg (25) and are fixedly connected to the two connecting rods (28); and the support seat (29) is fixedly arranged at the bottom end of the two connecting rods (28).

9. A line transmission device for power transmission and transformation engineering according to claim 8, characterized in that: The mobile support mechanism also includes a third threaded rod (30), which is inserted into the support leg (25) and is rotatably connected to the support leg (25), and the second slider (27) is sleeved on the third threaded rod (30) and slides vertically along the support leg (25) through the third threaded rod (30).

10. The line transmission device for power transmission and transformation engineering according to claim 9, characterized in that: The top end of the third threaded rod (30) passes through the top surface of the support leg (25) and is fixedly provided with a fourth motor (31) for rotating the third threaded rod (30).

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