Electric power line traction device

Abstract

The utility model relates to an electric power line traction device. Comprising a rack, and supporting roller assemblies are installed at the head end and the tail end of the rack; a belt wheel traction assembly and a rotating wheel traction assembly are installed between the two supporting roller assemblies. The first driving motor and the driving transmission pair are used for driving the belt wheel traction assembly; the belt wheel traction assembly comprises a belt wheel traction frame, an upper belt wheel conveying mechanism and a lower belt wheel conveying mechanism are installed on the belt wheel traction frame, and the belt wheel traction assembly further comprises a lifting adjusting mechanism used for adjusting the longitudinal position of the upper belt wheel conveying mechanism. The rotating wheel traction assembly comprises a rotating wheel support, an upper rotating wheel structure and a lower rotating wheel structure are installed on the rotating wheel support, the upper rotating wheel structure is movably connected with the rotating wheel support through a sliding shaft seat, and the rotating wheel distance adjusting mechanism is used for adjusting the distance between the upper rotating wheel structure and the lower rotating wheel structure. The rotating wheel driving structure is used for driving the upper rotating wheel structure and the lower rotating wheel structure to synchronously and reversely rotate. The cable traction device can perform efficient and stable traction operation on a cable, can be adjusted according to the size of the cable, is high in practicability, supports a cable body during working, and reduces friction between the cable and the ground or a rack.

Description

Technical Field

[0001] The utility model belongs to the technical field of power cable installation, and in particular relates to a power line traction device. Background Art

[0002] Power lines are the lines used to transmit electrical energy between power plants, substations, and power users. They are a crucial component of the power supply system, responsible for the transmission and distribution of electrical energy. Power lines are conductor loops that connect substations and distribution stations with power users or equipment, transmitting and distributing electrical energy from the power source (substations) to the load (power users or equipment).

[0003] Cables are increasingly important in power lines. Power cables are used to transmit and distribute high-power electrical energy within the backbone lines of power systems. These cables range from 1-500 kV and above, and come in a variety of insulation styles. They are categorized by voltage level into medium- and low-voltage power cables, high-voltage cables, extra-high-voltage cables, and ultra-high-voltage cables. Furthermore, they are categorized by current level into AC and DC cables. During power construction, traction devices are used to improve cable pulling efficiency.

[0004] When in use, the existing cable laying traction device usually uses the relative rotation of two turntables, and the friction between the turntable and the cable is used to give the cable a traction force to move forward. The traction effect is poor and the cable cannot be transported stably. Moreover, since the position of most turntables is fixed and cannot adapt to the traction of cables of different sizes, the practicality is not high. In addition, during the operation, the cable will contact the ground or the frame and generate friction, which may cause damage to the surface of the cable. Manual lifting of the cable is required, which is more laborious and reduces construction efficiency. Utility Model Content

[0005] The present invention aims to solve the technical problems existing in the prior art by providing a rationally designed power line traction device. The present invention can efficiently and stably pull cables and can be adjusted according to cable size. It is highly practical and supports the cable body during operation, reducing friction between the cable and the ground or the rack.

[0006] The utility model adopts the technical solution adopted to solve the technical problems existing in the known technology as follows: a power line traction device includes a frame, support roller assemblies are installed at the head and tail ends of the frame for supporting the cable and in rolling contact with the cable; a pulley traction assembly and a rotary pulley traction assembly are installed between the two groups of support roller assemblies; it also includes a first drive motor and a drive transmission pair for driving the pulley traction assembly; the pulley traction assembly includes a pulley traction frame, an upper pulley transmission mechanism and a lower pulley transmission mechanism correspondingly arranged above and below are installed on the pulley traction frame, and it also includes a lifting adjustment mechanism for adjusting the longitudinal position of the upper pulley transmission mechanism; the rotary pulley traction assembly includes a rotary pulley bracket, an upper rotary pulley structure and a lower rotary pulley structure correspondingly arranged are installed on the rotary pulley bracket, the lower rotary pulley structure is rotatably connected to the rotary pulley bracket, the upper rotary pulley structure is movably connected to the rotary pulley bracket through a sliding shaft seat, and it also includes a rotary pulley spacing mechanism for adjusting the spacing between the upper rotary pulley structure and the lower rotary pulley structure, and it also includes a rotary pulley driving structure for driving the upper rotary pulley structure and the lower rotary pulley structure to rotate synchronously in opposite directions.

[0007] The advantages and positive effects of the present invention are as follows: the present invention provides a power line traction device, which supports the cable body being pulled and transmitted by arranging support roller assemblies at the head and tail ends of the frame, thereby avoiding damage caused by large-area contact between the cable and the ground or the frame; by arranging a pulley traction assembly and a rotary wheel traction assembly, the cable body can be stably pulled and transmitted; since the spacing between the upper pulley transmission mechanism and the lower pulley transmission mechanism in the pulley traction assembly is adjustable, and the spacing between the upper rotary wheel structure and the lower rotary wheel structure in the rotary wheel traction assembly is adjustable, the pulley traction assembly and the rotary wheel traction assembly can pull and transmit cable bodies of different sizes, thereby improving the practicality of the present invention.

[0008] Preferably: the lifting and lowering adjustment mechanism includes a longitudinal optical axis fixed to the pulley traction frame, the upper pulley transmission mechanism is slidably connected to the longitudinal optical axis through a slider, and also includes a longitudinal pitch-adjusting screw rotatably connected to the pulley traction frame, and the upper pulley transmission mechanism is connected to the longitudinal pitch-adjusting screw through a nut; it also includes a traction main shaft rotatably connected and longitudinally arranged on the pulley traction frame, a lower turbine worm pair is installed between the drive shaft of the lower pulley transmission mechanism and the traction main shaft, and an upper turbine worm pair is installed between the upper pulley transmission mechanism and the traction main shaft, and the upper turbine worm pair can move along the axial direction of the traction main shaft and can rotate with the traction main shaft.

[0009] Preferably: the wheel pitch adjustment mechanism includes a longitudinally extending adjustment strip hole opened on the wheel bracket and through which the upper wheel structure can pass, a gear support arm and an adjustment guide bar fixed to the wheel bracket are respectively provided on both sides of the adjustment strip hole, and the sliding shaft seat is located between the gear support arm and the adjustment guide bar and is slidably connected to the two; it also includes a screw guide seat fixed to the upper part of the wheel bracket, a longitudinally arranged pitch adjustment screw is screwed on the screw guide seat, and the lower end of the pitch adjustment screw is movably connected to the sliding shaft seat; an upper driven gear is keyed to the end of the upper wheel structure, and a lower driven gear is keyed to the end of the lower wheel structure, and it also includes a lower transmission gear and an upper transmission gear rotatably connected and meshing with each other on the gear support arm, the lower transmission gear meshes with the lower driven gear, and the upper transmission gear meshes with the upper driven gear.

[0010] Preferably, the wheel driving structure includes a second driving motor, and a driving main gear is keyed to the output shaft of the second driving motor, and the driving main gear is meshed with the lower driven gear.

[0011] Preferably: the upper runner structure includes an upper runner shaft rotatably connected to the sliding shaft seat and arranged laterally, and an upper traction runner is installed at the end of the upper runner shaft; the lower runner structure includes a lower runner shaft rotatably connected to the runner bracket and arranged laterally, and a lower traction runner is installed at the end of the lower runner shaft; trapezoidal grooves are provided on the outer peripheral walls of the lower traction runner and the upper traction runner.

[0012] Preferably: the support roller assembly includes a rotating roller base, on which a first guide roller arranged laterally and two groups of second guide rollers arranged longitudinally are rotatably connected, and also includes a roller spacing adjustment mechanism installed on the rotating roller base, which is used to adjust the spacing between the two groups of second guide rollers.

[0013] Preferably: the roller spacing adjustment mechanism includes a transverse spacing adjustment screw which is rotatably connected to the roller main seat and is laterally arranged, the transverse spacing adjustment screw is a forward and reverse rotating screw, and a knob is installed at the end of the transverse spacing adjustment screw; two groups of movable roller seats are installed on the transverse spacing adjustment screw through a nut, and two groups of second guide rollers are rotatably installed on the two groups of movable roller seats respectively, and also includes a transverse guide rod fixed to the roller main seat and arranged parallel to the transverse spacing adjustment screw, and each movable roller seat is slidably connected to the transverse guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the support roller assembly in the present utility model;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the pulley traction assembly in the utility model;

[0017] Figure 4 This is a rear structural schematic diagram of the runner traction assembly in the present utility model;

[0018] Figure 5 It is a three-dimensional schematic diagram of a partial structure of the rotary wheel traction assembly in the present utility model.

[0019] In the figure: 1. First drive motor; 2. Drive transmission pair; 3. Support roller assembly; 3-1. Horizontal pitch-adjusting screw; 3-2. Horizontal guide rod; 3-3. Movable roller seat; 3-4. Rotating roller main seat; 3-5. First guide roller; 3-6. Second guide roller; 4. Pulley traction assembly; 4-1. Longitudinal optical axis; 4-2. Longitudinal pitch-adjusting screw; 4-3. Traction main shaft; 4-4. Lower worm gear pair; 4-5. Upper worm gear pair; 4-6. Lower adjustment seat; 4-7. Upper adjustment seat; 4-8. Pulley traction frame; 4-9. Adjustment handwheel; 4-10. Lifting connecting plate; 4-11. Upper pulley transmission mechanism ;4-12, lower pulley transmission mechanism; 5, traction support; 6, wheel traction assembly; 6-1, lower driven gear; 6-2, lower wheel shaft; 6-3, lower transmission gear; 6-4, upper transmission gear; 6-5, gear support arm; 6-6, wheel bracket; 6-7, screw guide seat; 6-8, pitch adjustment screw; 6-9, sliding shaft seat; 6-10, adjustment guide bar; 6-11, upper driven gear; 6-12, upper wheel shaft; 6-13, driving main gear; 6-14, adjustment bar hole; 6-15, second drive motor; 6-16, upper traction wheel; 6-17, lower traction wheel; 7, frame. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail:

[0021] See Figure 1 The power line traction device of the present invention includes a frame 7, with support roller assemblies 3 installed at both ends of the frame 7 for supporting the cable and in rolling contact with the cable; a pulley traction assembly 4 and a rotary wheel traction assembly 6 are installed between the two sets of support roller assemblies 3; and also includes a first drive motor 1 and a drive transmission pair 2 for driving the pulley traction assembly 4.

[0022] like Figure 3 As shown, the above-mentioned pulley traction assembly 4 includes a pulley traction frame 4-8, on which an upper pulley transmission mechanism 4-11 and a lower pulley transmission mechanism 4-12 correspondingly arranged above and below are installed, and also includes a lifting adjustment mechanism for adjusting the longitudinal position of the upper pulley transmission mechanism 4-11.

[0023] like Figure 3As shown, the aforementioned lifting and adjusting mechanism includes a longitudinal optical axis 4-1 fixedly attached to a pulley traction frame 4-8, an upper pulley transmission mechanism 4-11 slidably connected to the longitudinal optical axis 4-1 via a slider, and a longitudinal pitch-adjusting screw 4-2 rotatably connected to the pulley traction frame 4-8. The upper pulley transmission mechanism 4-11 is connected to the longitudinal pitch-adjusting screw 4-2 via a nut. A lifting connecting plate 4-10 is mounted on the upper pulley transmission mechanism 4-11, and the lifting connecting plate 4-10 is connected to the nut. An adjusting handwheel 4-9 is mounted on the top of the longitudinal pitch-adjusting screw 4-2. The aforementioned longitudinal optical axis 4-1 and longitudinal pitch-adjusting screw 4-2 are both arranged longitudinally.

[0024] The lifting and lowering adjustment mechanism also includes a traction main shaft 4-3 that is rotatably connected and longitudinally arranged on the pulley traction frame 4-8, a lower turbine worm pair 4-4 is installed between the drive shaft of the lower pulley transmission mechanism 4-12 and the traction main shaft 4-3, and an upper turbine worm pair 4-5 is installed between the upper pulley transmission mechanism 4-11 and the traction main shaft 4-3. The upper turbine worm pair 4-5 can move along the axial direction of the traction main shaft 4-3 and can rotate with the traction main shaft 4-3.

[0025] The lower pulley transmission mechanism 4-12 is slidably connected to the longitudinal optical axis 4-1 through a slider, and a locking screw is screwed on the above-mentioned slider, and the slider is locked and connected to the longitudinal optical axis 4-1 through the locking screw.

[0026] Furthermore, a lower adjustment seat 4-6 is installed on the transmission frame of the lower pulley transmission mechanism 4-12, and the lower turbine worm pair 4-4 includes a worm rotatably connected on the lower adjustment seat 4-6, and the worm is connected to the drive shaft of the lower pulley transmission mechanism 4-12; it also includes a turbine keyed to the traction main shaft 4-3, and the above-mentioned turbine and worm are engaged.

[0027] An upper adjusting seat 4-7 is installed on the transmission frame of the upper pulley transmission mechanism 4-11, and the upper worm gear pair 4-5 includes a worm gear rotatably connected on the upper adjusting seat 4-7, and the worm gear is connected to the drive shaft of the upper pulley transmission mechanism 4-11; it also includes a turbine meshed with the above-mentioned worm gear. In order to realize the sliding connection between the turbine and the traction main shaft 4-3 and ensure that the turbine can rotate with the traction main shaft 4-3, the above-mentioned turbine is connected to the traction main shaft 4-3 through a flat key, and a slide groove extending along its axial direction is provided on the outer wall of the traction main shaft 4-3, and the above-mentioned flat key is slidably inserted in the slide groove. Of course, the above-mentioned turbine can also cooperate with the traction main shaft 4-3 spline, thereby realizing the sliding connection between the lower worm gear pair 4-4 and the traction main shaft 4-3 and ensuring that the turbine can rotate synchronously with the traction main shaft 4-3.

[0028] The upper pulley transmission mechanism 4-11 and the lower pulley transmission mechanism 4-12 have the same structure, both including a transmission bracket, with a driving pulley and a driven pulley rotatably connected at each end of the transmission bracket, and a transmission belt drivingly connected between the driving pulley and the driven pulley. The drive shaft of the driving pulley is connected to the worm of the corresponding worm gear pair.

[0029] Furthermore, the above-mentioned wheeled traction frame 4-8 includes a top plate and a bottom plate distributed up and down, and a plurality of support rods are fixedly connected between the bottom plate and the top plate.

[0030] In this embodiment, the above-mentioned drive transmission pair 2 is installed between the output shaft of the first drive motor 1 and the traction main shaft 4-3, including a driving pulley keyed to the output shaft of the first drive motor 1, and also including a driven pulley keyed to the traction main shaft 4-3, and a belt is connected between the driving pulley and the driven pulley.

[0031] like Figure 4 and Figure 5 As shown, the wheel traction assembly 6 includes a wheel bracket 6-6, on which are mounted corresponding upper and lower wheel structures. The lower wheel structure is rotatably connected to the wheel bracket 6-6, and the upper wheel structure is movably connected to the wheel bracket 6-6 via a sliding shaft seat 6-9. It also includes a wheel spacing adjustment mechanism for adjusting the spacing between the upper and lower wheel structures, and a wheel drive structure for driving the upper and lower wheel structures to rotate synchronously in opposite directions. This embodiment also includes a traction support 5 fixedly connected to the top of the frame 7. The wheel bracket 6-6 is fixedly mounted on the traction support 5. The second drive motor 6-15 is mounted on the traction support 5.

[0032] The above-mentioned wheel pitch adjustment mechanism includes an adjustment strip hole 6-14 extending longitudinally and allowing the upper wheel structure to pass through, which is opened on the wheel bracket 6-6. A gear support arm 6-5 and an adjustment guide bar 6-10 fixedly connected to the wheel bracket 6-6 are respectively provided on both sides of the adjustment strip hole 6-14. The sliding shaft seat 6-9 is located between the gear support arm 6-5 and the adjustment guide bar 6-10 and is slidably connected to the two. It also includes a screw guide seat 6-7 fixed on the upper part of the wheel bracket 6-6, and a screw guide seat 6-7 is screwed on the screw guide seat 6-7. It is equipped with a longitudinally arranged pitch-adjusting screw 6-8, the lower end of which is movably connected to the sliding shaft seat 6-9; an upper driven gear 6-11 is keyed to the end of the upper rotating wheel structure, and a lower driven gear 6-1 is keyed to the end of the lower rotating wheel structure. It also includes a lower transmission gear 6-3 and an upper transmission gear 6-4 that are rotatably connected and meshed with each other on the gear support arm 6-5, wherein the lower transmission gear 6-3 is meshed with the lower driven gear 6-1, and the upper transmission gear 6-4 is meshed with the upper driven gear 6-11.

[0033] In actual operation, when the upper rotating wheel structure moves longitudinally, the upper driven gear 6-11 always remains in meshing with the upper transmission gear 6-4.

[0034] like Figure 4 As shown, the above-mentioned wheel driving structure includes a second driving motor 6-15, and a driving main gear 6-13 is keyed to the output shaft of the second driving motor 6-15, and the driving main gear 6-13 is meshed with the lower driven gear 6-1.

[0035] like Figure 5 As shown, the upper wheel structure includes an upper wheel shaft 6-12 rotatably connected and laterally arranged on the sliding shaft seat 6-9, and an upper traction wheel 6-16 is installed at the end of the upper wheel shaft 6-12; the lower wheel structure includes a lower wheel shaft 6-2 rotatably connected and laterally arranged with the wheel bracket 6-6, and a lower traction wheel 6-17 is installed at the end of the lower wheel shaft 6-2; trapezoidal grooves are provided on the outer peripheral walls of the lower traction wheel 6-17 and the upper traction wheel 6-16.

[0036] To further improve the traction effect, the upper and lower rotating wheel structures in this embodiment are each provided with two sets, and the second drive motor 6-15 and the driving main gear 6-13 are located between the two sets of lower driven gears 6-1. The upper rotating wheel shaft 6-12 is rotatably connected to the sliding shaft seat 6-9 through a rolling bearing.

[0037] See further Figure 2 The above-mentioned support roller assembly 3 includes a rotating roller main seat 3-4, on which a first guide roller 3-5 arranged horizontally and two groups of second guide rollers 3-6 arranged longitudinally are rotatably connected, and also includes a roller spacing adjustment mechanism installed on the rotating roller main seat 3-4, which is used to adjust the spacing between the two groups of second guide rollers 3-6.

[0038] Among them, the roller spacing adjustment mechanism includes a transverse spacing adjustment screw 3-1 which is rotatably connected and laterally arranged on the roller main seat 3-4. The transverse spacing adjustment screw 3-1 is a forward and reverse rotating screw, and a knob is installed at the end of the transverse spacing adjustment screw 3-1; two groups of movable roller seats 3-3 are installed on the transverse spacing adjustment screw 3-1 through a nut, and two groups of second guide rollers 3-6 are rotatably installed on the two groups of movable roller seats 3-3 respectively. It also includes a transverse guide rod 3-2 fixed to the roller main seat 3-4 and arranged parallel to the transverse spacing adjustment screw 3-1, and each movable roller seat 3-3 is slidably connected to the transverse guide rod 3-2.

[0039] Working principle:

[0040] When in use, first, the head end of the cable body is passed between the two second guide rollers 3-6 in the support roller assembly 3 at the front end. At this time, the cable is laid on the first guide roller 3-5 and in rolling contact with it. Then, the cable body is placed between the upper pulley transmission mechanism 4-11 and the lower pulley transmission mechanism 4-12 in the pulley traction assembly 4. Then, the cable body is passed between the upper traction wheel 6-16 and the lower traction wheel 6-17 correspondingly arranged in the wheel traction assembly 6. Finally, the cable body is passed between the two second guide rollers 3-6 in the support roller assembly 3 at the tail end; then the first drive motor 1 is started to drive the upper pulley transmission mechanism 4-11 and the lower pulley transmission mechanism 4-12 to operate, and at the same time, the second drive motor 6-15 is started to drive the upper traction wheel 6- 16 and the lower traction wheel 6-17 rotate, the running upper pulley transmission mechanism 4-11 and the lower pulley transmission mechanism 4-12, and the rotating upper traction wheel 6-16 and the lower traction wheel 6-17 can carry out efficient and stable traction transmission of the cable body, thereby completing the cable transportation process; when the cable body moves, the support roller assembly 3 installed at the head and tail ends of the frame 7 can support the cable, reduce the friction contact between the cable and the opposite side or the frame 7, and thus reduce the wear on the cable body, the two groups of second guide rollers 3-6 in the support roller assembly 3 can limit the cable body, prevent the cable body from slipping, and improve the safety of use. In addition, when the cable body moves, the first guide roller 3-5 rotates itself, reduces the friction between the cable body and the cable body, and improves the transmission efficiency;

[0041] When it is necessary to transport cable bodies of different sizes, the longitudinal pitch-adjusting screw 4-2 in the pulley traction assembly 4 can be rotated according to the size of the cable body. The rotated longitudinal pitch-adjusting screw 4-2 can drive the upper pulley transmission mechanism 4-11 to move longitudinally, thereby adjusting the distance between the upper pulley transmission mechanism 4-11 and the lower pulley transmission mechanism 4-12, so that the transmission surfaces in the upper pulley transmission mechanism 4-11 and the lower pulley transmission mechanism 4-12 contact with the cable body and clamp the cable body; at the same time, the pitch-adjusting screw 6-8 is rotated to drive the sliding shaft seat 6-9 connected thereto to move up and down, and then drive the upper wheel structure connected thereto to move up and down, so that the trapezoidal grooves in the upper traction wheel 6-16 and the lower traction wheel 6-17 can contact the cable local area arranged between the two and frictionally contact the cable body, so that the traction device can pull and transmit cable bodies of different sizes, thereby improving the practicality of the present utility model.

Claims

1. A power line traction device, characterized by: The invention comprises a frame (7), wherein support roller assemblies (3) are installed at both ends of the frame (7) for supporting the cable and in rolling contact with the cable; a pulley traction assembly (4) and a rotating pulley traction assembly (6) are installed between the two sets of support roller assemblies (3); the invention also comprises a first drive motor (1) and a drive transmission pair (2) for driving the pulley traction assembly (4); the pulley traction assembly (4) comprises a pulley traction frame (4-8), an upper pulley transmission mechanism (4-11) and a lower pulley transmission mechanism (4-12) arranged correspondingly above and below are installed on the pulley traction frame (4-8), and the invention also comprises a pulley traction frame (4-8) and a rotating pulley transmission mechanism (4-12) for driving the pulley traction assembly (4-11). The invention relates to a lifting and lowering adjustment mechanism for adjusting the longitudinal position of the upper pulley transmission mechanism (4-11); the wheel traction assembly (6) comprises a wheel bracket (6-6), on which a corresponding upper wheel structure and a lower wheel structure are mounted, the lower wheel structure is rotatably connected to the wheel bracket (6-6), and the upper wheel structure is movably connected to the wheel bracket (6-6) via a sliding shaft seat (6-9), and further comprises a wheel spacing adjustment mechanism for adjusting the distance between the upper wheel structure and the lower wheel structure, and a wheel driving structure for driving the upper wheel structure and the lower wheel structure to rotate synchronously in opposite directions.

2. The power line traction device according to claim 1, characterized in that: The lifting and lowering adjustment mechanism comprises a longitudinal optical axis (4-1) fixedly connected to a pulley traction frame (4-8); an upper pulley transmission mechanism (4-11) slidably connected to the longitudinal optical axis (4-1) via a slider; a longitudinal pitch-adjusting screw (4-2) rotatably connected to the pulley traction frame (4-8); the upper pulley transmission mechanism (4-11) is connected to the longitudinal pitch-adjusting screw (4-2) via a nut; and a traction main shaft (4-3) rotatably connected to the pulley traction frame (4-8) and arranged longitudinally; a lower worm gear pair (4-4) is installed between a driving shaft of a lower pulley transmission mechanism (4-12) and the traction main shaft (4-3); an upper worm gear pair (4-5) is installed between the upper pulley transmission mechanism (4-11) and the traction main shaft (4-3); and the upper worm gear pair (4-5) can move along the axial direction of the traction main shaft (4-3) and can rotate with the traction main shaft (4-3).

3. The power line traction device according to claim 1, characterized in that: The wheel pitch adjustment mechanism includes an adjustment strip hole (6-14) extending longitudinally and provided on the wheel bracket (6-6) for the upper wheel structure to pass through, a gear support arm (6-5) and an adjustment guide bar (6-10) fixedly connected to the wheel bracket (6-6) are respectively provided on both sides of the adjustment strip hole (6-14), a sliding shaft seat (6-9) is located between the gear support arm (6-5) and the adjustment guide bar (6-10) and is slidably connected to the two; and a screw guide seat (6-7) fixedly connected to the upper part of the wheel bracket (6-6) and a screw guide seat (6-7) screwed on the screw guide seat (6-7) is provided. A pitch-adjusting screw rod (6-8) is longitudinally arranged, and the lower end of the pitch-adjusting screw rod (6-8) is movably connected to the sliding shaft seat (6-9); an upper driven gear (6-11) is keyed to the end of the upper rotating wheel structure, and a lower driven gear (6-1) is keyed to the end of the lower rotating wheel structure. The invention also includes a lower transmission gear (6-3) and an upper transmission gear (6-4) that are rotatably connected and meshed with each other on the gear support arm (6-5), the lower transmission gear (6-3) meshes with the lower driven gear (6-1), and the upper transmission gear (6-4) meshes with the upper driven gear (6-11).

4. The power line traction device according to claim 1, characterized in that: The wheel driving structure comprises a second driving motor (6-15), an output shaft of the second driving motor (6-15) is key-connected with a driving main gear (6-13), and the driving main gear (6-13) is meshed with a lower driven gear (6-1).

5. The power line traction device according to claim 1, characterized in that: The upper runner structure comprises an upper runner shaft (6-12) rotatably connected to a sliding shaft seat (6-9) and arranged transversely, and an upper traction runner (6-16) is installed at the end of the upper runner shaft (6-12); the lower runner structure comprises a lower runner shaft (6-2) rotatably connected to a runner bracket (6-6) and arranged transversely, and a lower traction runner (6-17) is installed at the end of the lower runner shaft (6-2); and trapezoidal grooves are provided on the outer peripheral walls of the lower traction runner (6-17) and the upper traction runner (6-16).

6. The power line traction device according to claim 1, characterized in that: The supporting roller assembly (3) comprises a rotating roller main seat (3-4), on which a first guide roller (3-5) arranged transversely and two groups of second guide rollers (3-6) arranged longitudinally are rotatably connected, and further comprises a roller spacing adjustment mechanism installed on the rotating roller main seat (3-4) for adjusting the spacing between the two groups of second guide rollers (3-6).

7. The power line traction device according to claim 1, characterized in that: The roller pitch adjustment mechanism comprises a transverse pitch adjustment screw (3-1) which is rotatably connected to the roller main seat (3-4) and is laterally arranged. The transverse pitch adjustment screw (3-1) is a forward and reverse rotating screw. A knob is installed at the end of the transverse pitch adjustment screw (3-1). Two groups of movable roller seats (3-3) are installed on the transverse pitch adjustment screw (3-1) through a nut. Two groups of second guide rollers (3-6) are rotatably installed on the two groups of movable roller seats (3-3). The mechanism also comprises a transverse guide rod (3-2) which is fixed to the roller main seat (3-4) and arranged parallel to the transverse pitch adjustment screw (3-1). Each movable roller seat (3-3) is slidably connected to the transverse guide rod (3-2).

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