Wire tightening device for power installation

Abstract

The invention provides a wire tightening device for power installation, which comprises a main machine body, the inner side of the main machine body is provided with a cavity, one side of the main machine body is provided with a through groove, the inner side of the through groove is symmetrically and slidably connected with two groups of rotating shafts, one end of each of the two groups of rotating shafts is fixedly provided with a V-shaped wheel, and the inner side of the cavity is provided with a spline shaft and a bidirectional screw rod. The two ends of the spline shaft and the two-way screw are rotationally connected with the inner wall of the cavity through bearings, two spline cylinders are symmetrically and slidably connected to the outer side of the spline shaft, first bevel gears are coaxially and fixedly installed on the outer sides of the two spline cylinders, and one ends of the two rotating shafts penetrate through the through grooves and are coaxially and fixedly connected with second bevel gears. Through cooperation of the spline shaft and the spline cylinder, flexible rotation of the rotating shaft can be driven, through cooperation of the rotating shaft and the V-shaped wheel, the telegraph pole can be clamped through the V-shaped wheel, fixation of the main machine body is achieved, flexible movement of the main machine body on the telegraph pole is driven through rotation of the V-shaped wheel, and the convenience of the product is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical installation, and more specifically, particularly relates to a wire tightening device for electrical installation. Background Art

[0002] Electrical installation refers to the process of combining, connecting, and commissioning equipment and facilities in each link of power generation, transmission, transformation, distribution, and power consumption in accordance with relevant specifications, standards, and design requirements to achieve the safe, reliable supply, and reasonable use of electricity, including the erection of utility poles and the connection of wires.

[0003] If the wire is too loose and has a large sag, when encountering bad weather such as strong winds, the amplitude and force of the wire swing will increase significantly. This will not only increase the risk of the wire coming into contact with other objects (such as tree branches, buildings, etc.), triggering safety accidents such as short circuits and electric leakage, but also may cause the wires to rub against each other, resulting in damage to the insulation layer, thus threatening the safe operation of the power system and the safety of surrounding personnel and facilities. Tightening the wire can reduce this large-amplitude swing and reduce potential safety hazards.

[0004] When tightening the wire, a wire tightener is usually used. When the existing wire tightener is in use, the operator needs to carry the wire tightener on the body. After the operator climbs to a suitable position, the operator takes out the wire tightener, and then connects one end of the wire tightener to the utility pole or the cross arm on the utility pole through other fixing devices, and then the wire tightener can be used to connect and tighten the wire. In this process, carrying the wire tightener on the body will affect the operator's action of climbing the utility pole. At the same time, the existing wire tightener has a certain weight, which will increase the difficulty for the operator to climb the utility pole. At the same time, the operation of fixing the wire tightener with other devices is relatively cumbersome, and it has certain limitations in actual use. Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a wire tightening device for electrical installation is provided with the expectation of achieving a more practical value purpose. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a wire tightening device for electrical installation, which is achieved by the following specific technical means: A wire tightening device for electrical installation, comprising a main body. A cavity is provided inside the main body. A through groove is provided on one side of the main body. Two groups of rotating shafts are symmetrically and slidably connected inside the through groove. One ends of the two groups of rotating shafts penetrate through the through groove and are fixedly installed with V-shaped wheels. A spline shaft and a bidirectional screw are installed inside the cavity. Both ends of the spline shaft and the bidirectional screw are rotatably connected to the inner wall of the cavity through bearings. Two groups of spline sleeves are symmetrically and slidably connected to the outer side of the spline shaft. One bevel gear is coaxially and fixedly installed on the outer side of each of the two groups of spline sleeves. One ends of the two groups of rotating shafts penetrate through the through groove and are coaxially and fixedly connected with two bevel gears. The two bevel gears are respectively meshed with the two bevel gears, and the rotation directions of the two bevel gears are opposite. Two threaded sleeves are respectively threadedly connected to the two ends of the bidirectional screw corresponding to the two groups of spline sleeves. A connecting seat one and a connecting seat two are fixedly installed on the outer side of the threaded sleeve. The connecting seat one and the connecting seat two are respectively rotatably connected to the outer sides of the rotating shaft and the spline sleeve; A wire pulling mechanism is installed inside the cavity.

[0006] Further, a first clamping groove and a second clamping groove are respectively provided on the outer sides of the rotating shaft and the spline sleeve. A first snap spring and a second snap spring are respectively clamped and connected inside the first clamping groove and the second clamping groove. One sides of the first snap spring and the second snap spring respectively abut against one sides of the connecting seat one and the connecting seat two. One side of the connecting seat one abuts against one side of the bevel gear. A limiting seat is provided on the outer side of one end of the spline sleeve. One side of the limiting seat abuts against one side of the connecting seat two.

[0007] Further, the wire pulling mechanism includes two wire winding wheels. The two wire winding wheels are respectively rotatably connected to the upper and lower sides of the main body. Wire pulling ropes are wound around the outer sides of the wire winding wheels. One ends of the two wire pulling ropes are respectively fixedly connected to the outer sides of the two wire winding wheels. The other ends of the two wire pulling ropes are commonly fixedly connected with a wire fixing seat. A connecting rope is fixedly installed on one end of the wire fixing seat. A hook for connecting a wire clamping device is fixedly installed on one end of the connecting rope.

[0008] Further, connecting frames are fixedly installed at both ends of one side of the main body. Fixed pulleys are rotatably connected inside the two connecting frames through rotating shafts. The outer sides of the two fixed pulleys are respectively connected with the two wire pulling ropes.

[0009] Further, a first driving shaft is rotatably connected inside the cavity. The upper and lower ends of the first driving shaft respectively penetrate through the upper and lower sides of the main body and are coaxially and fixedly connected with one sides of the two wire winding wheels.

[0010] Furthermore, fixing seats are fixedly installed on both sides of the main body, and through holes are provided on the two groups of fixing seats. A U-shaped frame is installed on one side of the main body, and the U-shaped frame is divided into a horizontal section and two groups of vertical sections. The two groups of vertical sections pass through the through holes and are threadedly connected with nuts. The outer side of the horizontal section is rotatably connected with an auxiliary wheel.

[0011] Furthermore, a sliding block is slidably connected to the bottom side of the main body through a dovetail groove and a dovetail block, a moving frame is fixedly installed on the sliding block, an auxiliary wheel 2 is rotatably connected to the outer side of the moving frame, and an electric cylinder is fixedly installed on the bottom side of the main body, and the output end of the electric cylinder is fixedly connected to one side of the sliding block.

[0012] Furthermore, a motor 2 is fixedly mounted on the top side of the inner wall of the cavity, a driving wheel 1 is fixedly mounted on the output end of the motor 2, a driven wheel 1 is fixedly mounted on the outer side of the center of the bidirectional screw, and the driving wheel 1 and the driven wheel 1 are connected by a synchronous belt 1.

[0013] Furthermore, a motor 1 is fixedly mounted on the bottom side of the inner wall of the cavity, a worm gear reducer is fixedly mounted on the output end of the motor 1, a fixed plate is fixedly mounted on the bottom side of the inner wall of the cavity, a drive shaft 2 is rotatably connected to one side of the fixed plate, one end of the drive shaft 2 is fixedly connected to the output end of the worm gear reducer, and the drive shaft 2 is transmission-connected to the spline shaft through two sets of gears.

[0014] Furthermore, a reduction motor is fixedly mounted on the bottom side of the inner wall of the cavity, and the output end of the reduction motor is transmission-connected to a driving shaft through two sets of gears.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can achieve flexible movement of connecting seat 1 and connecting seat 2 through the cooperation of the bidirectional screw and the threaded barrel. The cooperation of connecting seat 1, connecting seat 2 and the threaded barrel can achieve flexible movement of the rotating shaft and the spline barrel at the same time. The cooperation of the spline shaft and the spline barrel can achieve flexible rotation of the rotating shaft. The cooperation of the rotating shaft and the V-shaped wheel can clamp the electric pole through the V-shaped wheel and fix the main body. The rotation of the V-shaped wheel can drive the main body to move flexibly on the electric pole, avoiding the tedious operation of the operator carrying the tensioner to climb the electric pole and using fixing equipment to fix the tensioner, thereby increasing the convenience of the product.

[0016] 2. Through the cooperation of the nut and the U-shaped frame, the present invention can achieve the flexible disassembly and assembly of the U-shaped frame on the main body, and drive the flexible movement of the U-shaped frame and the auxiliary wheel I. Through the cooperation of the electric cylinder and the sliding block, the flexible movement of the moving frame and the auxiliary wheel II can be achieved. Through the cooperation of the auxiliary wheel I and the auxiliary wheel II, the stability of the main body during movement and wire tightening on the electric pole can be increased.

[0017] 3. Through the cooperation of the reduction motor and the driving shaft I, the present invention can achieve the automatic winding and unwinding of two groups of wire-pulling ropes simultaneously. Through the cooperation of the wire-pulling rope, the wire fixing seat and the connecting rope, the flexible movement of the hook can be achieved. After the hook is connected to the wire clamping device, the automatic tightening of the wire can be achieved, avoiding the cumbersome operation of manual wire tightening by the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the schematic diagram of the overall structure of the present invention Figure 1 。

[0019] Figure 2 is the schematic diagram of the overall structure of the present invention Figure 2 。

[0020] Figure 3 is the schematic diagram of the internal structure of the cavity of the present invention.

[0021] Figure 4 is the schematic diagram of the structure of the bidirectional screw and the spline shaft of the present invention.

[0022] Figure 5 is the schematic diagram of the structure of the rotating shaft and the V-shaped wheel of the present invention.

[0023] Figure 6 is the schematic diagram of the structure of the connecting seat I and the snap ring I of the present invention.

[0024] Figure 7 is the schematic diagram of the structure of the connecting seat II and the snap ring II of the present invention.

[0025] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows: 1. Main body; 2. Through groove; 3. Rotating shaft; 4. V-shaped wheel; 5. Spline shaft; 6. Spline barrel; 7. Bevel gear I; 8. Bevel gear II; 9. Bidirectional screw; 10. Thread barrel; 11. Connecting seat I; 12. Connecting seat II; 13. Snap ring I; 14. Snap ring II; 15. Wire take-up wheel; 16. Wire-pulling rope; 17. Wire fixing seat; 18. Connecting rope; 19. Hook; 20. Connecting frame; 21. Fixed pulley; 22. Fixed seat; 23. U-shaped frame; 24. Nut; 25. Auxiliary wheel I; 26. Sliding block; 27. Moving frame; 28. Auxiliary wheel II; 29. Electric cylinder; 30. Motor I; 31. Motor II; 32. Reduction motor; 33. Driving shaft I; 34. Fixed plate; 35. Driving shaft II. Detailed implementation manners

[0026] The following further describes in detail the implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Embodiment:

[0030] As shown in the attached Figure 1 to the attached Figure 7 figures: The present invention provides a wire tightening device for electrical installation, including a main body 1. A cavity is provided inside the main body 1. A through groove 2 is provided on one side of the main body 1. Two groups of rotating shafts 3 are symmetrically and slidably connected inside the through groove 2. One ends of the two groups of rotating shafts 3 pass through the through groove 2 and are fixedly installed with V-shaped wheels 4. Anti-slip rubber sleeves are fixedly wrapped on the outer sides of the V-shaped wheels 4 to ensure that there is no easy slipping phenomenon during crawling use; A spline shaft 5 and a bidirectional screw 9 are installed inside the cavity. Both ends of the spline shaft 5 and the bidirectional screw 9 are rotatably connected to the inner wall of the cavity through bearings. Two groups of spline sleeves 6 are symmetrically and slidably connected to the outer side of the spline shaft 5. One-way bevel gears 7 are coaxially and fixedly installed on the outer sides of the two groups of spline sleeves 6. One ends of the two groups of rotating shafts 3 pass through the through groove 2 and are coaxially and fixedly connected with bevel gears 8. The two groups of one-way bevel gears 7 are respectively meshed with the two groups of bevel gears 8, and the rotation directions of the two groups of bevel gears 8 are opposite. Two groups of threaded sleeves 10 are respectively threadedly connected to both ends of the bidirectional screw 9 corresponding to the two groups of spline sleeves 6. A connecting seat one 11 and a connecting seat two 12 are fixedly installed on the outer sides of the threaded sleeves 10. The connecting seat one 11 and the connecting seat two 12 are respectively rotatably connected to the outer sides of the rotating shaft 3 and the spline sleeve 6; A wire pulling mechanism is installed inside the cavity.

[0031] Among them, a first clamping groove and a second clamping groove are respectively provided on the outer sides of the rotating shaft 3 and the spline sleeve 6. A first snap spring 13 and a second snap spring 14 are respectively clamped and connected in the first clamping groove and the second clamping groove. One sides of the first snap spring 13 and the second snap spring 14 respectively abut against one sides of the connecting seat one 11 and the connecting seat two 12. One side of the connecting seat one 11 abuts against one side of the bevel gear 8 to prevent the rotating shaft 3 from shifting relative to the connecting seat one 11. A limiting seat is provided on the outer side of one end of the spline sleeve 6. One side of the limiting seat abuts against one side of the connecting seat two 12 to prevent the spline sleeve 6 from shifting relative to the connecting seat two 12.

[0032] Among them, the wire pulling mechanism includes two groups of wire winding wheels 15. The two groups of wire winding wheels 15 are respectively rotatably connected to the upper and lower sides of the main body 1. Wire pulling ropes 16 are wound on the outer sides of the wire winding wheels 15. One ends of the two groups of wire pulling ropes 16 are respectively fixedly connected to the outer sides of the two groups of wire winding wheels 15. The other ends of the two groups of wire pulling ropes 16 are commonly fixedly connected to a wire fixing seat 17. A connecting rope 18 is fixedly installed at one end of the wire fixing seat 17. A hook 19 that can be used to connect a wire clamping device is fixedly installed at one end of the connecting rope 18, which can realize the flexible retraction and release of the wire pulling rope 16 on the wire winding wheel 15 and the flexible adjustment of the position of the hook 19, so as to realize the tightening of the electric wire.

[0033] Wherein, connection frames 20 are fixedly installed at both ends of one side of the main body 1. Fixed pulleys 21 are rotatably connected to the inner sides of the two groups of connection frames 20 through rotating shafts. The outer sides of the two groups of fixed pulleys 21 are respectively connected to two groups of wire ropes 16, preventing damage to the wire ropes 16 and the main body 1 caused by friction between the wire ropes 16 and the main body 1, and increasing the service life of the product.

[0034] Wherein, a first driving shaft 33 is rotatably connected to the inner side of the cavity. The upper and lower ends of the first driving shaft 33 respectively pass through the upper and lower sides of the main body 1 and are coaxially and fixedly connected to one side of the two groups of wire winding wheels 15, enabling flexible rotation of the two groups of wire winding wheels 15 simultaneously.

[0035] Wherein, fixing seats 22 are fixedly installed on both sides of the main body 1. Through holes are provided on the two groups of fixing seats 22. A U-shaped frame 23 is installed on one side of the main body 1. The U-shaped frame 23 is divided into a horizontal section and two vertical sections. The two vertical sections respectively pass through the through holes and are threadedly connected with nuts 24. The outer side of the horizontal section is rotatably connected to a first auxiliary wheel 25, enabling flexible movement of the first auxiliary wheel 25 to facilitate clamping of the electric pole and easy installation and disassembly, ensuring convenience during use.

[0036] Wherein, a sliding block 26 is slidably connected to the bottom side of the main body 1 through a dovetail groove and a dovetail block. A moving frame 27 is fixedly installed on the sliding block 26. A second auxiliary wheel 28 is rotatably connected to the outer side of the moving frame 27. An electric cylinder 29 is fixedly installed on the bottom side of the main body 1. The output end of the electric cylinder 29 is fixedly connected to one side of the sliding block 26, enabling flexible movement of the sliding block 26 and the second auxiliary wheel 28 to press against the electric pole and ensure stable operation of the whole; anti-slip rubber sleeves are fixedly wrapped around the outer sides of the first auxiliary wheel 25 and the second auxiliary wheel 28 to ensure that slipping is not likely to occur during use.

[0037] Wherein, a second motor 31 is fixedly installed on the top side of the inner wall of the cavity. A first driving pulley is fixedly installed on the output end of the second motor 31. A first driven pulley is fixedly installed on the outer side of the center of the bidirectional screw rod 9. The first driving pulley and the first driven pulley are connected by a first synchronous belt, enabling automatic rotation of the bidirectional screw rod 9, and then quickly adjusting the distance between the threaded cylinders 10 to quickly clamp the V-shaped wheel 4 to the electric pole.

[0038] Among them, a motor 30 is fixedly installed on the bottom side of the inner wall of the cavity, a worm gear reducer is fixedly installed on the output end of the motor 30, a fixing plate 34 is fixedly installed on the bottom side of the inner wall of the cavity, a driving shaft 2 35 is rotatably connected to one side of the fixing plate 34, one end of the driving shaft 2 35 is fixedly connected to the output end of the worm gear reducer, and the driving shaft 2 35 is transmission-connected to the spline shaft 5 through two sets of gears, which can realize the automatic rotation of the spline shaft 5 to drive the V-shaped wheel 4 to rotate, so as to realize that after the whole body hugs the pole, it can quickly crawl on the pole, so as to quickly reach the specified height position for wire pulling operations.

[0039] Among them, a reduction motor 32 is fixedly installed on the bottom side of the inner wall of the cavity. The reduction motor 32 is a worm gear reduction motor. The output end of the reduction motor 32 is connected to the drive shaft 33 through two sets of gears. The two sets of gears are a large gear and a small gear that mesh with each other. The large gear is fixedly installed on the outside of the drive shaft 33, and the small gear is fixedly installed on the output end of the reduction motor 32. Therefore, when in use, the output torque can be increased by deceleration. At the same time, the reduction motor 32 adopts a worm gear reduction motor in the prior art to ensure safety during use.

[0040] The working principle of this embodiment is as follows: when it is necessary to tighten the wire, firstly, the electric cylinder 29, motor 1 30, motor 2 31, reduction motor 32 and other electrical components in the product are connected to an external power supply and a control unit, the main body 1 is moved to one side of the electric pole, and the two groups of V-shaped wheels 4 are respectively located on both sides of the electric pole, then the U-shaped frame 23 is installed on the fixed seat 22 and the nut 24 is screwed in, so that the outer side of the auxiliary wheel 1 25 is pressed against the electric pole, the electric cylinder 29 is started to drive the sliding block 26 to move, the sliding block 26 drives the moving frame 27 and the auxiliary wheel 2 28 to move, so that the outer side of the auxiliary wheel 2 28 is pressed against the electric pole, then the motor 2 31 is started to drive the bidirectional screw 9 to rotate, the bidirectional screw 9 drives the two groups of threaded barrels 10 to move, the threaded barrel 10 drives the rotating shaft 3 and the spline barrel 6 to move through the connecting seat 1 11 and the connecting seat 2 12, and the rotating shaft 3 drives the V-shaped wheel 4 Clamp the electric pole, then stop motor 2 31 and start motor 1 30 to drive spline shaft 5 to rotate, spline shaft 5 drives spline cylinder 6 to rotate, spline cylinder 6 drives rotating shaft 3 and V-shaped wheel 4 to rotate through bevel gear 1 7 and bevel gear 2 8, and V-shaped wheel 4 drives main body 1 to climb on the electric pole, when main body 1 is in a suitable position, turn off motor 1 30, start reduction motor 32 to drive drive shaft 1 33 and take-up wheel 15 to rotate and release wire rope 16, when the length of wire rope 16 is suitable, connect hook 19 to wire clamp, and connect wire clamp to wire, start reduction motor 32 to drive take-up wheel 15 to rotate, take-up wheel 15 drives take-up rope 16 to wrap around take-up wheel 15, and tighten wire, when wire is in a suitable state, stop reduction motor 32 and fix wire, thus completing the wire tightening operation easily.

[0041] The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A tightening device for electric power installation, comprising a main body (1), wherein a cavity is provided inside the main body (1), and characterized in that: A through groove (2) is provided on one side of the main body (1), and two groups of rotating shafts (3) are symmetrically slidably connected to the inner side of the through groove (2), and one end of the two groups of rotating shafts (3) passes through the through groove (2) and is fixedly mounted with a V-shaped wheel (4). A spline shaft (5) and a bidirectional screw (9) are mounted on the inner side of the cavity, and both ends of the spline shaft (5) and the bidirectional screw (9) are rotatably connected to the inner wall of the cavity through bearings. Two groups of spline cylinders (6) are symmetrically slidably connected to the outer side of the spline shaft (5), and a bevel gear (7) is fixedly mounted coaxially on the outer side of the two groups of spline cylinders (6). One end of the two groups of rotating shafts (3) Both of them pass through the through groove (2) and are coaxially fixedly connected with bevel gear 2 (8), the two sets of bevel gear 1 (7) are respectively meshed and connected with the two sets of bevel gear 2 (8), and the rotation directions of the two sets of bevel gear 2 (8) are opposite; the two ends of the bidirectional screw (9) correspond to the two sets of spline cylinders (6) are respectively threadedly connected with two sets of threaded cylinders (10), the outer side of the threaded cylinder (10) is fixedly installed with a connecting seat 1 (11) and a connecting seat 2 (12), the connecting seat 1 (11) and the connecting seat 2 (12) are respectively rotatably connected with the outer side of the rotating shaft (3) and the spline cylinder (6); the inner side of the cavity is installed with a wire pulling mechanism.

2. The wire tightening device for power installation according to claim 1, characterized in that: A first clamping groove and a second clamping groove are respectively provided on the outer sides of the rotating shaft (3) and the spline cylinder (6), and a first clamping spring (13) and a second clamping spring (14) are respectively engaged and connected in the first clamping groove and the second clamping groove, and one side of the first clamping spring (13) and the second clamping spring (14) are respectively abutted against one side of the connecting seat (11) and the second connecting seat (12), and one side of the connecting seat (11) is abutted against one side of the bevel gear (8), and a limit seat is provided on the outer side of one end of the spline cylinder (6), and one side of the limit seat is abutted against one side of the connecting seat (12).

3. The wire tightening device for power installation according to claim 1, characterized in that: The wire pulling mechanism comprises two groups of wire taking-up wheels (15), the two groups of wire taking-up wheels (15) are rotatably connected to the upper and lower sides of the main body (1), the outer sides of the wire taking-up wheels (15) are wound with wire pulling ropes (16), and one end of the two groups of wire pulling ropes (16) are respectively fixedly connected to the outer sides of the two groups of wire taking-up wheels (15), and the other ends of the two groups of wire pulling ropes (16) are commonly fixedly connected to a wire fixing seat (17), one end of the wire fixing seat (17) is fixedly installed with a connecting rope (18), and one end of the connecting rope (18) is fixedly installed with a hook (19) that can be used to connect a wire clamp.

4. The tightening device for electric power installation according to claim 3, characterized in that: Connecting frames (20) are fixedly mounted on both ends of one side of the main body (1); the inner sides of the two sets of connecting frames (20) are rotatably connected to fixed pulleys (21) via rotating shafts; and the outer sides of the two sets of fixed pulleys (21) are respectively connected to two sets of pull ropes (16).

5. The tightening device for electric power installation according to claim 3, characterized in that: A drive shaft 1 (33) is rotatably connected to the inner side of the cavity, and the upper and lower ends of the drive shaft 1 (33) respectively pass through the upper and lower sides of the main body (1) and are respectively coaxially fixedly connected to one side of the two sets of take-up wheels (15).

6. The wire tightening device for power installation according to claim 1, characterized in that: Fixed seats (22) are fixedly mounted on both sides of the main body (1), and through holes are provided on the two sets of fixed seats (22). A U-shaped frame (23) is mounted on one side of the main body (1), and the U-shaped frame (23) is divided into a horizontal section and two sets of vertical sections. The two sets of vertical sections pass through the through holes and are threadedly connected with nuts (24). The outer side of the horizontal section is rotatably connected with an auxiliary wheel (25).

7. The wire tightening device for power installation according to claim 1, characterized in that: A sliding block (26) is slidably connected to the bottom side of the main body (1) via a dovetail groove and a dovetail block, a moving frame (27) is fixedly mounted on the sliding block (26), an auxiliary wheel (28) is rotatably connected to the outer side of the moving frame (27), an electric cylinder (29) is fixedly mounted on the bottom side of the main body (1), and an output end of the electric cylinder (29) is fixedly connected to one side of the sliding block (26).

8. The wire tightening device for power installation according to claim 1, characterized in that: A second motor (31) is fixedly mounted on the top side of the inner wall of the cavity, a driving wheel (1) is fixedly mounted on the output end of the second motor (31), a driven wheel (1) is fixedly mounted on the outer side of the center of the bidirectional screw (9), and the driving wheel (1) and the driven wheel (1) are connected by a synchronous belt (1).

9. The tightening device for electric power installation according to claim 1, characterized in that: A motor 1 (30) is fixedly mounted on the bottom side of the inner wall of the cavity, a worm gear reducer is fixedly mounted on the output end of the motor 1 (30), a fixing plate (34) is fixedly mounted on the bottom side of the inner wall of the cavity, a driving shaft 2 (35) is rotatably connected to one side of the fixing plate (34), one end of the driving shaft 2 (35) is fixedly connected to the output end of the worm gear reducer, and the driving shaft 2 (35) is transmission-connected to the spline shaft (5) via two sets of gears.

10. The wire tightening device for power installation according to claim 5, characterized in that: A reduction motor (32) is fixedly mounted on the bottom side of the inner wall of the cavity, and an output end of the reduction motor (32) is transmission-connected to a driving shaft 1 (33) via two sets of gears.

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