Anti-pinch pay-off device suitable for stringing construction of power transmission line

Abstract

The invention relates to the technical field of power transmission facility construction, in particular to a wire clamping prevention pay-off device suitable for power transmission line stringing construction. The device comprises a tension traction device, a paying-off tackle and a lead device, the paying-off tackle comprises a bearing pulley and an anti-pinch device, and the anti-pinch device comprises a telescopic stop lever. The tension traction device is used for guiding a wire to be erected on the paying-off tackle from a wire roll, the paying-off tackle is used for guiding the wire to be conveyed and finally fixing and hanging the wire, the wire leading device is used for pulling the wire to be dragged in the paying-off tackle, and the bearing pulley is beneficial to reducing friction force during wire conveying and facilitating movement of the wire under the action of the wire leading device. The anti-pinch device is used for preventing the lead from sliding into the gap of the bearing pulley and reducing wire clamping and winding, the telescopic stop lever is used for preventing the lead from deviating, the stop lever spring controls the telescopic stop lever to stretch out and draw back and be tightly attached to the bearing pulley, and gaps caused by deformation of the bearing pulley are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission facility construction, and in particular to a wire-pinching prevention and wire-laying device suitable for power transmission line stringing construction. Background Art

[0002] During the construction of transmission line projects, tension laying is the main method used for laying out overhead conductors. It has the advantages of small footprint, high economy, fast laying speed, and high mechanized construction rate. The laying pulley is an important component in the laying out of overhead conductors. It is connected to the cross arm of the tower, receiving the traction rope and the conductor, thereby realizing the conductor laying operation.

[0003] In the construction of overhead transmission lines, after the tower is assembled, the conductor deployment phase can begin. During the conductor deployment construction, the pulley must first be hung on the tower, and then the traction ropes from small to large are pulled through the pulley in sequence to form a traction path on the pulley along the tower direction. The main structure of the currently commonly used wire-laying pulley includes a nylon wheel, an external frame, a bearing and other parts. When the diameter of the guide rope used in construction is small, the guide rope is easy to derail and fall into the gap between the nylon wheel and the external frame. This requires high-altitude personnel to climb the tower to take it out, which brings great safety risks. Secondly, the guide rope and the bearing rub and squeeze, resulting in broken strands or wires. Third, it will cause uneven force to cause the pulley to overturn. Summary of the invention

[0004] In order to solve the problem that the wire-paying pulley is easy to clamp the wire when in use and improve the safety during the wire-paying process, the present invention provides a wire-paying device for preventing wire clamping and suitable for the construction of power transmission line wiring.

[0005] The present invention provides a wire-pinching prevention and wire-laying device suitable for power transmission line erection construction, which adopts the following technical solution:

[0006] A wire-pinching prevention and wire-laying device suitable for power transmission line stringing construction comprises a tension traction device, a wire-laying pulley and a wire-leading device, wherein the tension traction device is arranged on the ground at the initial end of the conductor lead-in, the wire-laying pulley is arranged on the transmission tower, the wire-leading device is connected to the tension traction device and the wire-laying pulley, the wire-laying pulley comprises a supporting pulley and an anti-pinching device, the anti-pinching device is installed on one side of the supporting pulley and guides the wire-leading device on the wire-laying pulley to be transmitted, and the anti-pinching device comprises a telescopic baffle rod, one end of the telescopic baffle rod is closely attached to the side edge of the supporting pulley, and the other end is telescopically installed through a baffle rod spring.

[0007] The tension traction device is used to guide the wire from the wire reel to the wire-paying pulley. The wire-paying pulley is used to guide the wire transmission and finally fix the suspended wire. The lead-in device is used to pull the wire to drag between the wire-paying pulleys. The supporting pulley is beneficial to reduce the friction during wire transmission and facilitate the movement of the wire under the action of the lead-in device. The anti-pinch device is used to prevent the lead from sliding into the gap of the supporting pulley, reducing the occurrence of wire clamping and wire entanglement. The telescopic baffle rod is used to prevent the lead from deviating. The baffle rod spring controls the telescopic baffle rod to extend and retract and fit tightly against the supporting pulley to avoid gaps caused by deformation of the supporting pulley.

[0008] Furthermore, the supporting pulley is hoisted on the cross arm of the transmission tower through a pulley bracket, and a telescopic adjustment device is installed on the pulley bracket. The telescopic adjustment device adjusts the length of the pulley bracket through a telescopic mechanism. An insulating component is installed on the pulley bracket. The top of the pulley bracket is fixed to the cross arm of the transmission tower through a hanging joint. The pulley bracket is also provided with a swing shaft to control the supporting pulley to swing along the vertical axis.

[0009] The telescopic adjustment device facilitates the adjustment of the height of the supporting pulley according to the preset installation height of the conductor. The insulating component is used to reduce the power supply between the power supply conductor and the power supply tower to ensure power supply safety. The swing shaft allows the supporting pulley to swing left and right, which is convenient for turning according to the swing direction of the power supply conductor and avoiding the power supply conductor from detaching from the supporting pulley due to excessive swing angle.

[0010] Furthermore, the supporting pulleys are installed on the pulley bracket in a transversely spaced arrangement via a fixed cross bar, the supporting pulleys are rotatably installed on the fixed cross bar via a pulley bearing, an auxiliary clamp is provided above the supporting pulley, the auxiliary clamp is telescopically installed on the pulley bracket via a clamp spring, and two adjacent spaced supporting pulleys are in contact with each other via a brush.

[0011] The auxiliary clamp helps to keep the wire in close contact with the supporting pulley, reducing detachment and misalignment. The brush is used to prevent the lead wire from being drawn into the supporting pulleys, further reducing the possibility of wire clamping.

[0012] Furthermore, the tension traction device includes a ground bracket and a guide pulley, the ground bracket is fixedly installed on the ground by embedded reinforcement and tensioning chains, the guide pulley is rotatably installed on the ground bracket, the ground bracket includes a telescopic frame and a fixed base plate, the fixed base plate is installed close to the ground, the telescopic frame is telescopically arranged on the fixed base plate, the telescopic frame and the fixed base plate are connected with a grounding wire, and the grounding wire is buried below the ground.

[0013] The telescopic frame facilitates the adjustment of the guide pulley height, and the grounding wire not only helps to fix the base plate to the ground, but also reduces the possibility of electric shock during live operations.

[0014] Furthermore, the guide pulley is rotatably installed on the ground bracket through a rolling horizontal axis, the guide pulleys are arranged at intervals and fixed on the rolling horizontal axis, the rolling horizontal axis is rotatably and laterally telescopically installed on the ground bracket, a ratchet is installed at one end of the rolling horizontal axis, and a hand crank is installed at the other end, a stopping claw is installed at the ratchet, the stopping claw includes a stopping claw for forward stopping and a stopping claw for reverse stopping, and the two stopping claws are arranged at intervals along the telescopic direction of the rolling horizontal axis.

[0015] The ratchet is helpful to control the steering of the guide pulley, reduce reversal and slipping, and help maintain the tension. The positive stop pawl and the reverse stop pawl are convenient for controlling the limiting direction of the ratchet and facilitating the control of line release and line reeling.

[0016] Furthermore, a tensioning friction wheel is installed above the guide pulley, and a torque controller is connected to the tensioning friction wheel. The torque controller uses magnetic torsional damping to limit the rotation speed of the tensioning friction wheel. A stopper is installed on one side of the tensioning friction wheel. The stopper controls the extension and retraction through a cam adjuster and further controls the stopping and releasing of the tensioning friction wheel.

[0017] The tensioning friction wheel is used to provide tensioning force, and the torque controller is used to control the torque of the tensioning friction wheel and further control the instrument rotation speed.

[0018] Furthermore, the lead device includes a guide pull wire, a force pull wire and a pull plate, the guide pull wire, the force pull wire and the pull plate are connected in sequence, the front end of the guide pull wire is pulled by a pull wire hoisting device, the pull plate is an isosceles trapezoidal structure, and the short side is the lead end, the lead end is connected to the force pull wire, the long side is the pull wire end, and the pull wire end is connected to the wire.

[0019] Furthermore, the guide pull wire is divided into multiple sections, and two adjacent sections of the guide pull wire are detachably bolted to each other. The disconnected guide pull wires are respectively suspended and overlapped on a group of wire-laying pulleys and the bottom ends are bolted to the lead wire for hanging down.

[0020] The guide wire is set up on the wire-laying pulley in advance to facilitate threading and leading.

[0021] Furthermore, a lifting device is installed on the transmission tower directly above the wire-releasing pulley, and the lifting device includes a lifting pulley, a lifting line and a winch. The lifting pulley is suspended on the transmission tower, and the lifting line is wound around the lifting pulley and connected to the winch at the end.

[0022] Furthermore, a monitoring device is installed and connected to the wire-paying pulley, and the monitoring device includes force monitoring, swing monitoring and conductivity monitoring.

[0023] Force monitoring and sway monitoring are used to monitor tension and wind-induced swaying.

[0024] In summary, the present invention has the following beneficial technical effects:

[0025] 1. The tension traction device is used to guide the wire from the wire reel to the wire-releasing pulley. The wire-releasing pulley is used to guide the wire transmission and finally fix the hanging wire. The lead-in device is used to pull the wire to drag between the wire-releasing pulleys. The supporting pulley is helpful to reduce the friction during wire transmission and facilitate the movement of the wire under the action of the lead-in device. The anti-clamping device is used to prevent the lead from sliding into the gap of the supporting pulley, reducing the occurrence of wire clamping and entanglement. The telescopic baffle rod is used to prevent the lead from deviating. The baffle rod spring controls the telescopic baffle rod to extend and retract and close to the supporting pulley to avoid gaps caused by deformation of the supporting pulley.

[0026] 2. The telescopic adjustment device is convenient for adjusting the height of the supporting pulley according to the preset installation height of the conductor. The insulating component is used to reduce the power supply between the power supply conductor and the power supply tower to ensure power supply safety. The swing axis allows the supporting pulley to swing left and right, which is convenient for turning according to the swing direction of the power supply conductor and avoiding the power supply conductor from detaching from the supporting pulley due to excessive swing angle.

[0027] 3. The auxiliary clamp helps to keep the wire in close contact with the supporting pulley, reducing detachment and dislocation. The brush is used to prevent the lead wire from being drawn into the supporting pulley, further reducing the possibility of wire clamping. The telescopic frame facilitates the adjustment of the guide pulley height. The grounding wire not only helps to fix the base plate to the ground, but also reduces the possibility of electric shock during live operations.

[0028] 4. The ratchet is helpful to control the direction of the guide pulley, reduce reversal and slipping, and maintain the tension. The positive stop pawl and the reverse stop pawl are convenient for controlling the limiting direction of the ratchet and facilitating the control of line release and line reeling. The tensioning friction wheel is used to provide tensioning force, and the torque controller is used to control the torque of the tensioning friction wheel and further control the instrument speed.

[0029] 5. The guide wire is set up on the wire-laying pulley in advance to facilitate threading and leading. The force monitoring and swing monitoring are used to monitor the shaking caused by the pulling force and wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the present invention in construction and use state;

[0031] Figure 2 for Figure 1 A local enlarged schematic diagram of point A;

[0032] Figure 3 for Figure 1 A local enlarged schematic diagram of point B;

[0033] Figure 4 for Figure 3 A local enlarged schematic diagram of G;

[0034] Figure 5 for Figure 1 A local enlarged schematic diagram of point C;

[0035] Figure 6 for Figure 1 A local enlarged schematic diagram of D;

[0036] Figure 7 for Figure 1 A local enlarged schematic diagram of point E;

[0037] Figure 8 for Figure 1 A local enlarged schematic diagram of F;

[0038] Fig. 9 It is a schematic diagram of the structure of the tension traction device of the present invention;

[0039] Fig.10 for Fig. 9 A local enlarged schematic diagram of point H.

[0040] Description of reference numerals:

[0041] 1. Tension traction device, 11. Ground bracket, 111. Telescopic bracket, 112. Fixed bottom plate, 113. Ground wire, 12. Guide pulley, 121. Rolling horizontal axis, 122. Ratchet, 123. Stop pawl, 124. Hand crank, 13. Tensioning friction wheel, 131. Torque controller, 132. Stopper, 133. Cam adjuster, 2. Pay-off pulley, 21. Puller bracket, 211. Telescopic adjustment device, 212. Insulating member, 213. Hanging joint, 214. Swinging shaft, 22. Support pulley, 221 , fixed cross bar, 222, pulley bearing, 223, auxiliary clamp, 224, clamp spring, 23, anti-pinch device, 231, telescopic baffle rod, 232, baffle rod spring, 233, brush, 3, lead device, 31, guide pull wire, 311, lead wire weight, 32, force pull wire, 33, pull wire plate, 331, lead wire end, 332, pull wire end, 4, lifting device, 41, lifting pulley, 42, lifting line, 43, winch equipment, 5, monitoring device, 51, force monitoring, 52, swing monitoring, 53, conductive monitoring. DETAILED DESCRIPTION

[0042] The following will be combined with the attached Figure 1-Figure 10 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] Embodiment 1:

[0045] The embodiment of the present invention discloses a wire-pinching prevention and wire-laying device suitable for power transmission line wiring construction, referring to Figure 1-Figure 4 , including a tension traction device 1, a wire-releasing pulley 2 and a lead-in device 3, the tension traction device 1 is arranged on the ground at the initial end of the conductor lead-in, the wire-releasing pulley 2 is arranged on the transmission tower, the lead-in device 3 is connected to the tension traction device 1 and the wire-releasing pulley 2, the wire-releasing pulley 2 includes a supporting pulley 22 and an anti-clamping device 23, the anti-clamping device 23 is installed on one side of the supporting pulley 22 and guides the lead-in device 3 on the wire-releasing pulley 2 to be transmitted, the anti-clamping device 23 includes a telescopic baffle rod 231, one end of the telescopic baffle rod 231 is close to the side edge of the supporting pulley 22, and the other end is telescopically installed through a baffle rod spring 232.

[0046] During the wire laying construction, after the rolled finished wire is transported to the location, the wire head is led out and overlapped on the tension traction device 1, and then pulled to a high altitude and overlapped on the wire laying pulley 2. The lead-out and overlap transmission of the wire is carried out by the lead-in device 3;

[0047] When the wire guide device 3 slides along the supporting pulley 22 on the wire-releasing pulley 2, the anti-clamping device 23 blocks the gap to prevent the pull rope from being twisted into the gap of the supporting pulley 22, and the blocking rod spring 232 pulls the telescopic blocking rod 231 to always contact the supporting pulley 22.

[0048] Embodiment 2:

[0049] On the basis of Example 1, add:

[0050] Reference Figure 2 The supporting pulley 22 is hoisted on the cross arm of the transmission tower through a pulley bracket 21. A telescopic adjustment device 211 is installed on the pulley bracket 21. The telescopic adjustment device 211 adjusts the length of the pulley bracket 21 through a telescopic mechanism. An insulating component 212 is installed on the pulley bracket 21. The top of the pulley bracket 21 is fixed to the cross arm of the transmission tower through a hanging joint 213. A swing shaft 214 is also provided on the pulley bracket 21 to control the swing of the supporting pulley 22 along the vertical axis.

[0051] Reference Figure 2 and Figure 3 The supporting pulley 22 is installed on the pulley bracket 21 in a transversely spaced arrangement through a fixed cross bar 221. The supporting pulley 22 is rotatably installed on the fixed cross bar 221 through a pulley bearing 222. An auxiliary clamp 223 is provided above the supporting pulley 22. The auxiliary clamp 223 is telescopically installed on the pulley bracket 21 through a clamp spring 224. Two adjacent supporting pulleys 22 arranged at intervals are in contact with each other through a brush 233.

[0052] Embodiment 3:

[0053] On the basis of Example 1, add:

[0054] Reference Figure 8-Figure 10 The tension traction device 1 includes a ground bracket 11 and a guide pulley 12. The ground bracket 11 is fixedly installed on the ground by planting bars and tensioning chains. The guide pulley 12 is rotatably installed on the ground bracket 11. The ground bracket 11 includes a telescopic frame 111 and a fixed base plate 112. The fixed base plate 112 is installed close to the ground. The telescopic frame 111 is telescopically arranged on the fixed base plate 112. The telescopic frame 111 and the fixed base plate 112 are connected with a grounding wire 113, and the grounding wire 113 is buried below the ground.

[0055] Reference Figure 8-Figure 10 The guide pulley 12 is rotatably mounted on the ground bracket 11 through a rolling horizontal axis 121. The guide pulleys 12 are arranged at intervals and fixed on the rolling horizontal axis 121. The rolling horizontal axis 121 is rotatably and laterally telescopically mounted on the ground bracket 11. A ratchet 122 is mounted at one end of the rolling horizontal axis 121, and a hand crank 124 is mounted at the other end. A stopping claw 123 is mounted at the ratchet 122. The stopping claw 123 includes a stopping claw 123 for forward stopping and a stopping claw 123 for reverse stopping, and the two stopping claws 123 are arranged at intervals along the telescopic direction of the rolling horizontal axis 121.

[0056] There is an area between the positive stopping pawl 123 and the reverse stopping pawl 123. When the locking direction needs to be switched, the hand rocker 124 is manually shaken forward and the rolling horizontal axis 121 is pushed horizontally to make the ratchet 122 disengage from the positive stopping pawl 123, and then the hand rocker 124 is shaken backward and the rolling horizontal axis 121 is further pushed horizontally to make the ratchet 122 contact the reverse stopping pawl 123.

[0057] Reference Figure 8-Figure 10A tensioning friction wheel 13 is installed above the guide pulley 12, and a torque controller 131 is connected to the tensioning friction wheel 13. The torque controller 131 uses magnetic torsional damping to limit the rotation speed of the tensioning friction wheel 13. A stopper 132 is installed on one side of the tensioning friction wheel 13. The stopper 132 is controlled by a cam adjuster to control the extension and retraction and further control the stopper 132 to stop and release the tensioning friction wheel 13.

[0058] Embodiment 4:

[0059] On the basis of Example 1, add:

[0060] Reference Figure 5-Figure 7 The lead device 3 includes a guide pull wire 31, a force pull wire 32 and a pull plate 33. The guide pull wire 31, the force pull wire 32 and the pull plate 33 are connected in sequence. The front end of the guide pull wire 31 is pulled by a pull wire hoisting device. The pull plate 33 is an isosceles trapezoidal structure, and the short side is the lead end 331. The lead end 331 is connected to the force pull wire 32, and the long side is the pull wire end 332. The pull wire end 332 is connected to the wire.

[0061] Two guide wires 31 and force wires 32 are arranged horizontally and parallel on the wire drawing plate 33 to keep the direction of the wire drawing plate 33 from rotating;

[0062] The force applying wires 32 include three types, one having a diameter of 10 mm, one having a diameter of 15 mm, and one having a diameter of 26 mm, and are connected in sequence.

[0063] Reference Figure 5-Figure 7 The guide pull wire 31 is divided into multiple sections, and two adjacent sections of the guide pull wire 31 are detachably bolted to each other. The disconnected guide pull wires 31 are respectively suspended and overlapped on a group of wire-releasing pulleys 2 and the bottom ends are bolted to the lead wire weight 311.

[0064] Before the wire-releasing block 2 is hoisted by the hoisting device 4, the guide wire 31 is overlapped on the wire-releasing block 2, and then the guide wires 31 of two adjacent wire-releasing blocks 2 are bolted to each other during use, and then pulled to straighten.

[0065] Embodiment 5:

[0066] On the basis of Example 1, add:

[0067] Reference Figure 3 and Figure 7 A lifting device 4 is installed on the transmission tower directly above the wire-releasing pulley 2. The lifting device 4 includes a lifting pulley 41, a lifting line 42 and a hoisting device 43. The lifting pulley 41 is suspended on the transmission tower, and the lifting line 42 is wound around the lifting pulley 41 and connected to the hoisting device 43 at the end.

[0068] Reference Figure 2 and Figure 3 A monitoring device 5 is installed and connected to the wire-releasing pulley 2 , and the monitoring device 5 includes a force monitoring device 51 , a swing monitoring device 52 and a conductive monitoring device 53 .

[0069] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A wire-pinching prevention and wire-releasing device suitable for power transmission line stringing construction, comprising a tension traction device (1), a wire-releasing pulley (2) and a wire-leading device (3), wherein the tension traction device (1) is arranged on the ground at the initial end of the conductor lead-in, the wire-releasing pulley (2) is arranged on the power transmission tower, and the wire-leading device (3) is connected to the tension traction device (1) and the wire-releasing pulley (2), characterized in that: The wire-releasing pulley (2) comprises a supporting pulley (22) and an anti-clamping device (23), wherein the anti-clamping device (23) is installed on one side of the supporting pulley (22) and guides the wire-leading device (3) on the wire-releasing pulley (2) to be transmitted; The anti-pinch device (23) comprises a telescopic blocking rod (231), one end of which is in close contact with the side edge of the supporting pulley (22), and the other end of which is telescopically mounted via a blocking rod spring (232).

2. The anti-pinch wire-laying device for power transmission line erection construction according to claim 1, characterized in that: The supporting pulley (22) is hoisted on the cross arm of the transmission tower via a pulley bracket (21); a telescopic adjustment device (211) is installed on the pulley bracket (21); the telescopic adjustment device (211) adjusts the length of the pulley bracket (21) via a telescopic mechanism; an insulating component (212) is installed on the pulley bracket (21); the top of the pulley bracket (21) is fixedly mounted on the cross arm of the transmission tower via a hanging joint (213); and a swing shaft (214) is also provided on the pulley bracket (21) to control the supporting pulley (22) to swing along a vertical axis.

3. A wire-pinching prevention and wire-laying device suitable for power transmission line stringing construction according to claim 1 or 2, characterized in that: The supporting pulleys (22) are installed on the pulley bracket (21) in a transversely spaced arrangement via a fixed cross bar (221); the supporting pulleys (22) are rotatably installed on the fixed cross bar (221) via a pulley bearing (222); an auxiliary clamp (223) is arranged above the supporting pulley (22); the auxiliary clamp (223) is telescopically installed on the pulley bracket (21) via a clamp spring (224); and two adjacent supporting pulleys (22) arranged at intervals are in contact with each other via a brush (233).

4. The anti-pinch wire-laying device for power transmission line stringing construction according to claim 1, characterized in that: The tension traction device (1) comprises a ground support (11) and a guide pulley (12); the ground support (11) is fixedly installed on the ground through embedded reinforcement and tensioning chains; the guide pulley (12) is rotatably installed on the ground support (11); the ground support (11) comprises a telescopic frame (111) and a fixed bottom plate (112); the fixed bottom plate (112) is installed close to the ground; the telescopic frame (111) is telescopically arranged on the fixed bottom plate (112); the telescopic frame (111) and the fixed bottom plate (112) are connected to a grounding wire (113); and the grounding wire (113) is buried below the ground.

5. The anti-pinch wire-laying device for power transmission line erection construction according to claim 4 is characterized in that: The guide pulley (12) is rotatably mounted on the ground bracket (11) via a rolling transverse axis (121); the guide pulleys (12) are arranged at intervals and fixed on the rolling transverse axis (121); the rolling transverse axis (121) is rotatably and laterally telescopically mounted on the ground bracket (11); a ratchet (122) is mounted on one end of the rolling transverse axis (121) and a hand crank (124) is mounted on the other end; a stop pawl (123) is mounted on the ratchet (122); the stop pawl (123) comprises a positive stop pawl (123) and a reverse stop pawl (123); and the two stop pawls (123) are arranged at intervals along the telescopic direction of the rolling transverse axis (121).

6. A wire-pinching prevention and wire-laying device suitable for power transmission line stringing construction according to claim 4 or 5, characterized in that: A tensioning friction wheel (13) is installed above the guide pulley (12), and a torque controller (131) is connected to the tensioning friction wheel (13). The torque controller (131) uses magnetic torsional damping to limit the rotation speed of the tensioning friction wheel (13). A stopper (132) is installed on one side of the tensioning friction wheel (13), and the stopper (132) controls the extension and retraction through a cam adjuster, thereby controlling the stopper (132) to stop and release the tensioning friction wheel (13).

7. The anti-pinch wire-laying device for power transmission line stringing construction according to claim 1, characterized in that: The wire guide device (3) comprises a guide wire (31), a force wire (32) and a wire drawing plate (33); the guide wire (31), the force wire (32) and the wire drawing plate (33) are connected in sequence; the front end of the guide wire (31) is pulled by a wire drawing hoist; the wire drawing plate (33) is an isosceles trapezoidal structure, and the short side is a wire end (331), the wire end (331) is connected to the force wire (32), and the long side is a wire drawing end (332), the wire drawing end (332) is connected to a conducting wire.

8. The anti-pinch wire-laying device for power transmission line erection construction according to claim 7, characterized in that: The guide pull wire (31) is divided into multiple sections, and two adjacent sections of the guide pull wire (31) are detachably bolted to each other. The disconnected guide pull wires (31) are respectively suspended and overlapped on a group of wire-releasing pulleys (2) and the bottom ends are bolted to the lead wire weight (311).

9. The anti-pinch wire-laying device for power transmission line stringing construction according to claim 1, characterized in that: A lifting device (4) is installed on the transmission tower directly above the wire-releasing pulley (2), and the lifting device (4) comprises a lifting pulley (41), a lifting wire (42) and a hoisting device (43). The lifting pulley (41) is suspended on the transmission tower, and the lifting wire (42) is wound around the lifting pulley (41) and connected to the hoisting device (43) at the end.

10. The anti-pinch wire-laying device for power transmission line stringing construction according to claim 1, characterized in that: A monitoring device (5) is installed and connected to the wire-releasing pulley (2), and the monitoring device (5) includes a force monitor (51), a swing monitor (52) and a conductivity monitor (53).

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