Traction device used on tower

Abstract

The invention relates to the technical field of communication and power traction equipment, and discloses a tower traction device which comprises a clamping seat and a pulley. An adjusting and fixing mechanism is arranged in the clamping base, and self-adaptive preliminary clamping and thread locking and fixing of iron tower angle steel of different sizes are achieved. The tackle is hung below the clamping seat, a direction limiting assembly is arranged between the tackle and the clamping seat, and omni-directional angle adjustment and mechanical locking are achieved through rotation of the rotary disc and cooperation of the limiting columns driven by the springs and the clamping grooves. An auxiliary traction assembly is installed on the sliding face in the tackle, traction rollers are of a girdling structure to prevent deviation, a permanent magnet block and an induction coil are integrated, the rollers rotate to cut magnetic induction lines to generate power, and surface resistance wires are driven to heat so as to soften and straighten electric wires. And the top of the sliding surface is provided with a barrier plate for resetting the torsion spring, so that the electric wire can be unlocked after being touched and locked after entering the groove. The device integrates the functions of firm installation, flexible steering, automatic locking and online heat treatment straightening, and the efficiency and safety of high-altitude traction operation are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of communication and power traction equipment technology, specifically a traction device for tower use. Background Technology

[0002] During the construction of power transmission and distribution lines, traction devices are essential auxiliary tools, typically fixed to the crossarms or angle steel of the tower, used to support and guide the laying of conductors or traction ropes. As power engineering develops towards high voltage, large-section conductors, and complex terrain, higher requirements are placed on the functionality and safety of tower-mounted traction devices.

[0003] Current traction pulley or pulley devices face several technical bottlenecks in practical applications. Firstly, regarding installation and fixing, the dimensions of the angle steel used in steel towers vary, and traditional fixing mechanisms often employ a single bolt clamping method. This method requires prolonged manual tightening of bolts to accommodate the width of the angle steel, resulting in low efficiency during high-altitude operations. While some devices using simple spring clamps are convenient to install, their clamping force is often insufficient under high-intensity traction and vibration, easily leading to displacement or even slippage of the device on the tower, making it difficult to balance installation efficiency with connection stability.

[0004] Secondly, during the coiling, storage, and transportation of wires or traction ropes, the coiling state and surface anti-rust grease often result in significant internal stress and bending memory effects, especially in low-temperature environments where the cables become more rigid. Existing traction rollers only provide passive physical support and rotational guidance, failing to eliminate internal stress within the cable. This causes the cable to easily retain its original spiral shape during traction, making it highly susceptible to self-spinning, coiling, and even kinking. This not only increases traction resistance but can also damage the cable surface or cause the pulley to jam.

[0005] Furthermore, the direction of traction operations often varies due to terrain and construction sections. Ordinary fixed pulleys cannot adjust their angle, easily causing severe friction between the cable and the pulley edges. While freely rotating suspended pulleys solve the angle adaptation problem, they lack an angle locking mechanism, making them prone to ineffective swaying when encountering crosswinds or fluctuations in traction force. More critically, existing pulleys with angle locking functions rely entirely on manual operation for locking and unlocking. If fine-tuning is needed during traction, workers must climb back to a height to perform the operation, significantly reducing efficiency and increasing the risk of falls from heights.

[0006] Furthermore, with the widespread adoption of drone-based cable deployment technology, achieving efficient cable insertion and preventing detachment has become crucial. Existing pulley locking mechanisms are mostly manual pin-operated or simple open-type designs. Manual structures require manual operation from the tower, making them unsuitable for blind drone deployment; while simple open-type designs facilitate cable insertion, they are prone to detaching from the opening during traction if the cable bounces, posing a serious safety hazard for high-altitude operations.

[0007] Finally, existing tower traction operations are essentially conducted blindly. Operators on the ground cannot perceive the real-time operating status of the high-altitude trolley (such as rotation speed, temperature, and whether it has derailed). Once cable jamming, overheating, or derailment occurs, it is often not discovered until the fault has escalated. Although sensors can theoretically be installed, power supply becomes the biggest challenge in the passive environment of high-altitude iron towers. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a tower traction device that solves the problems of low installation and fixation efficiency and poor stability of existing traction equipment on tower materials, easy kinking and coiling of cables due to internal stress, low work efficiency and high risk due to reliance on manual tower climbing for traction direction adjustment and locking, blind operation due to lack of self-powered monitoring methods for high-altitude work, and safety hazards such as cables easily coming off the trough.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a traction device for towers, comprising a mounting base and a trolley, wherein the mounting base is provided with an adjustment and fixing mechanism for connecting the traction device to the tower, the trolley is located directly below the mounting base, and a directional limiting component for adjusting the angle is provided between the trolley and the mounting base; the trolley has two symmetrically arranged sliding surfaces inside, and each sliding surface is equipped with an auxiliary traction component for pulling the power line, and a locking component is provided at the top of the sliding surface; The trolley is also equipped with a self-powered intelligent traction control system, which monitors the device status and works with the direction limiting component to control the angle locking and unlocking of the trolley; an active traction component is located directly below the trolley, and the trolley and the active traction component are connected by a traction rope. The directional limiting assembly includes a turntable, the bottom of which is fixedly connected to the top center of the trolley, and a top plate is fixedly connected to the top of the turntable. Bolts are installed at opposite corners inside the top plate. A limiting post is slidably connected inside the trolley, and a limiting plate is fixedly connected to the outside of the limiting post. A spring is sleeved on the outside of the limiting post, and a lever is fixedly connected to one side of the limiting plate. A vertical groove is formed on the side wall of the trolley, and the lever extends through the groove to the outside of the trolley.

[0010] Preferably, the bottom surface of the card holder is provided with a limiting inner groove for accommodating the turntable, and a limiting ring is provided around the periphery of the limiting inner groove; a plurality of card slots are evenly provided in the circumferential direction inside the limiting ring, and the top of the limiting post can be inserted into the card slot to lock the angle of the trolley; a threaded groove is provided at the diagonal part of the inner groove, and the bolt passes through the top plate and is threaded into the inside of the threaded groove.

[0011] Preferably, the sliding surface has an arc-shaped structure that is concave towards the center of the trolley, and the two sliding surfaces are symmetrically arranged about the center line of the trolley, forming a gap between the two sliding surfaces into which the power supply line falls.

[0012] Preferably, the auxiliary traction assembly includes a plurality of traction rollers arranged side by side inside the sliding surface, with a first rotating shaft passing through the center of each traction roller, and the traction rollers being rotatably connected to the inner wall of the trolley through the first rotating shaft; the outer surface of the traction rollers has a waisted structure that is concave in the middle and convex at both ends.

[0013] Preferably, the bottom of the first rotating shaft extends to the outside of the traction roller and is surrounded by a plurality of permanent magnet blocks. An inner ring fixed inside the trolley is fitted around the outer side of the permanent magnet blocks, and an induction coil is provided inside the inner ring. A heating resistance wire is embedded on the surface of the traction roller, and the heating resistance wire is electrically connected to the induction coil inside the inner ring.

[0014] Preferably, the adjusting and fixing mechanism includes an adjusting component and an anti-detachment component; the adjusting component includes two L-shaped rods slidably connected to the top of the card seat, and an anti-friction pad is fixedly connected to the inner side wall of the L-shaped rods; the anti-detachment component includes two fixing ears fixedly connected to the side wall of the L-shaped rods, and a retaining screw is threaded between the two fixing ears.

[0015] Preferably, the adjustment assembly further includes a first limiting rod, the fixing screw and the first limiting rod are located on both sides of the L rod, the first limiting rod passes through the side walls of the two L rods; a second limiting rod is provided between the bottoms of the two L rods, and a limiting tension spring is provided on both sides of the second limiting rod, and the two ends of the limiting tension spring are fixedly connected to the opposite side between the two L rods.

[0016] Preferably, the locking assembly includes a blocking plate, which is rotatably connected to the top entrance of the sliding surface via a second rotating shaft. A torsion spring is sleeved on the outer side of the second rotating shaft to keep the blocking plate in a horizontal closed state.

[0017] Preferably, the active traction assembly includes a traction seat, a traction shaft is rotatably connected inside the traction seat, a drive motor is mounted on one side of the traction seat, the output shaft of the drive motor is fixedly connected inside the traction shaft, and the traction rope is mounted on the outside of the traction shaft.

[0018] Preferably, the self-powered intelligent traction control system includes a central control unit, a power management module, a sensor group, a wireless communication module, and an electromagnetic actuator; the input end of the power management module is electrically connected to the induction coil in the inner ring, and the output end of the power management module is connected to the heating resistance wire and the built-in energy storage unit respectively; the sensor group includes a temperature sensor disposed on the surface of the traction roller, a speed sensor disposed on the side wall of the inner ring, and an attitude sensor disposed on the trolley main board; the electromagnetic actuator includes an electromagnet disposed at the direction limiting component, and the output end of the electromagnet is connected to the limiting post or lever, for driving the limiting post to overcome the resistance of the spring and disengage from the slot when energized.

[0019] This invention provides a traction device for use on towers. It has the following advantages: 1. This invention employs a dual mechanism of spring coarse adjustment and screw fine locking. In the initial installation phase, the elasticity of the limiting spring, combined with the sliding of the L-shaped rod, allows for rapid adaptation to tower materials of different sizes (such as angle steel of varying widths), achieving initial clamping in one step and significantly improving installation efficiency at heights. After initial positioning, a secondary tightening is achieved through the fixing screw, along with an anti-friction pad with anti-slip teeth, firmly securing the device to the tower material. This structure solves the problems of limited adjustment range or easy loosening and slippage with traditional devices or single bolt fixation, ensuring that the device does not shift under high-intensity traction.

[0020] 2. This invention integrates a magnetoelectric induction unit and a heating resistance wire within the traction roller. During traction, the mechanical energy of the moving cable drives the roller to rotate, cutting magnetic lines of force to generate an induced current, which is then converted into heat energy. This heat treatment of the cable passing through the roller softens the cable's outer sheath and internal grease, effectively eliminating the memory effect and internal stress generated during cable winding and storage, and reducing the risk of the cable spinning, twisting, or coiling during traction. Simultaneously, the roller's waisted hyperboloid design not only increases the heat conduction contact area but also forces the cable to automatically center, ensuring smooth traction and extending the cable's service life.

[0021] 3. This invention, by setting up a directional limiting component and utilizing a turntable in conjunction with a pin-type limiting post structure, allows the trolley to rotate 360 ​​degrees to find the optimal traction direction according to actual construction needs, and also enables mechanical locking via a slot to prevent ineffective shaking of the trolley under strong winds or fluctuations in traction force, thus ensuring the stability of the traction direction. Furthermore, the locking component at the top of the sliding surface utilizes a gravity-triggered principle to achieve an automatic locking function where the cable opens upon contact and locks upon insertion into the slot. This is particularly suitable for blind-drop cable operations by drones, reducing the safety hazard of cables jumping out of the slot during high-altitude traction.

[0022] 4. This invention introduces a self-powered intelligent traction control system, realizing the mechatronics and intelligent upgrade of the device. On the one hand, the system powers itself by recovering the mechanical energy generated by the rotation of the traction rollers, solving the pain point of difficulty in laying power lines or replacing batteries for high-altitude equipment, and achieving energy self-sufficiency. On the other hand, the system combines sensors and electromagnetic actuators to achieve remote unlocking, automatic alignment, and automatic locking of the trolley direction, allowing operators to adjust the traction angle without having to climb the tower again, significantly reducing the intensity and risk of high-altitude operations. In addition, the system can monitor and warn of abnormal states such as overheating, jamming, and derailment in real time, filling the technical gap of blind pulling in traditional traction devices during high-altitude operations, and significantly improving the safety and controllability of construction. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of the traction device of the present invention; Figure 3 This is an internal sectional view of the card holder of the present invention; Figure 4 This is a schematic diagram of the retaining screw of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the card holder of the present invention; Figure 6 This is a schematic diagram of the structure of the barrier plate of the present invention; Figure 7 This is a schematic diagram of the traction roller of the present invention; Figure 8 This is a schematic diagram of the structure of the directional limiting component of the present invention; Figure 9 This is a schematic diagram of the heating resistance wire of the present invention; Figure 10 This is an exploded view of the auxiliary traction component of the present invention; Figure 11 This is a schematic diagram of the active traction component of the present invention.

[0024] The components include: 1. Card holder; 101. Limiting ring; 102. Limiting inner groove; 103. Card slot; 104. Threaded groove; 2. Trolley; 201. Sliding surface; 3. Adjustment and fixing mechanism; 31. Adjustment assembly; 311. L-rod; 312. Anti-friction pad; 313. First limiting rod; 314. Limiting tension spring; 315. Second limiting rod; 32. Anti-detachment assembly; 321. Fixing screw; 322. Fixing lug; 4. Auxiliary traction assembly; 401. Traction roller; 402. Heating element. 403. Resistance wire; 404. First rotating shaft; 405. Permanent magnet block; 406. Inner ring; 5. Locking assembly; 507. Blocking plate; 508. Second rotating shaft; 509. Torsion spring; 600. Directional limiting assembly; 601. Top plate; 602. Bolt; 603. Turntable; 604. Limiting post; 605. Limiting plate; 606. Lever; 607. Spring; 608. Slide groove; 7. Traction rope; 801. Active traction assembly; 802. Traction seat; 803. Drive motor; 804. Traction shaft. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 7 Appendix Figure 8 and attached Figure 9 This invention provides a traction device for towers, including a mounting base 1 and a trolley 2. The mounting base 1 is provided with an adjustment and fixing mechanism 3 for connecting the traction device to the tower. The trolley 2 is located directly below the mounting base 1, and a direction limiting component 6 for adjusting the angle is provided between the trolley 2 and the mounting base 1. Two sliding surfaces 201 are symmetrically opened inside the trolley 2, and an auxiliary traction component 4 for pulling the electric wire is installed inside each sliding surface 201. A locking component 5 is provided at the top of the sliding surface 201. The directional limiting assembly 6 includes a turntable 603, the bottom of which is fixedly connected to the top center of the trolley 2, and a top plate 601 is fixedly connected to the top of the turntable 603. Bolts 602 are installed at the diagonal corners inside the top plate 601. A limiting post 604 is slidably connected inside the trolley 2. A limiting plate 605 is fixedly connected to the outside of the limiting post 604. A spring 607 is sleeved on the outside of the limiting post 604. A lever 606 is fixedly connected to one side of the limiting plate 605. A vertical groove 608 is provided on the side wall of the trolley 2. The lever 606 extends through the groove 608 to the outside of the trolley 2. The lever 606 is used to slide in the groove 608 and drive the limiting post 604 to disengage from the card seat 1.

[0027] Specifically, the card holder 1 serves as the fixed base of the device, and its interior is equipped with an adjustment and fixing mechanism 3 for connecting the traction device and the angle steel of the tower. The trolley 2 is located directly below the card holder 1. In order to realize the rotational adjustment of the trolley 2 relative to the card holder 1, a directional limiting component 6 is provided between the trolley 2 and the card holder 1.

[0028] In the structural design of the trolley 2, two arc-shaped sliding surfaces 201 that are concave towards the center are symmetrically opened inside the main body. The two sliding surfaces 201 are symmetrical about the center line of the trolley 2, and a gap is formed between them for the power supply line to fall in. An auxiliary traction component 4 for carrying and pulling the wire is installed in the internal gap of the sliding surface 201, and a locking component 5 to prevent the wire from falling out is provided at the top entrance of the sliding surface 201.

[0029] The bottom surface of the card holder 1 has a circular limiting inner groove 102. A limiting ring 101 is provided around the limiting inner groove 102. Several card slots 103 are evenly provided in the circumferential direction inside the limiting ring 101 to achieve multi-angle positioning. In addition, threaded grooves 104 are provided at diagonal points inside the limiting inner groove 102.

[0030] The directional limiting assembly 6 includes a turntable 603. The bottom of the turntable 603 is fixedly connected to the top center of the trolley 2. A top plate 601 is fixedly connected to the top of the turntable 603. The top plate 601 is adapted to be placed in the limiting inner groove 102 on the bottom surface of the aforementioned card holder 1. Bolts 602 are installed at the diagonal corners inside the top plate 601. After passing through the top plate 601, the bolts 602 are threaded into the threaded groove 104 of the card holder 1, thereby suspending the trolley 2 below the card holder 1 and allowing the trolley 2 to rotate horizontally via the turntable 603.

[0031] To lock the rotation angle, a limit post 604 is vertically slidably connected inside the trolley 2. A groove 608 is vertically opened on the side wall of the trolley 2. A limit plate 605 is fixedly connected to the outside of the limit post 604, and a spring 607 in a compressed state is sleeved on the outside of the limit post 604. A lever 606 is fixedly connected to one side of the limit plate 605. The lever 606 passes through the groove 608 and extends to the outside of the trolley 2.

[0032] In the working state, the elastic force of the spring 607 pushes the limiting post 604 upward, so that its top end inserts into any of the slots 103 on the bottom surface of the card holder 1, thereby locking the angle of the trolley 2; when the direction needs to be adjusted, the operator pulls down the lever 606, the lever 606 slides in the slide groove 608 and drives the limiting plate 605 and the limiting post 604 to move downward against the resistance of the spring 607, so that the limiting post 604 disengages from the slot 103, at which time the trolley 2 can rotate freely; To facilitate manual release of the angle lock of the trolley 2 from the outside, a long strip-shaped through hole, namely the slide groove 608, is opened on the side wall of the trolley 2 in the vertical direction.

[0033] The lever 606 serves as a manual operation handle. One end is fixedly connected to the limiting plate 605 inside the trolley 2 and then to the limiting post 604. The other end passes horizontally through the slide groove 608 and extends to the outside of the trolley 2. The length of the slide groove 608 is precisely calculated, and its vertical stroke covers the movement distance required for the limiting post 604 to insert into and disengage from the slot 103.

[0034] In the initial locked state, the internal spring 607 lifts the limiting post 604, and the lever 606 is located at the upper end of the slide groove 608. When it is necessary to adjust the orientation of the trolley 2, the operator holds the exposed part of the lever 606 and applies force to make it slide vertically downward along the slide groove 608. Since the lever 606 is rigidly connected to the internal limiting plate 605 and the limiting post 604, this downward movement will directly drive the limiting post 604 to move downward synchronously, compressing the internal spring 607, until the top of the limiting post 604 completely disengages from the slot 103 on the bottom surface of the card holder 1. At this time, the mechanical lock between the trolley 2 and the card holder 1 is released, and the operator can rotate the trolley 2 to the predetermined angle by using the lever 606 or by directly pushing it. After releasing the lever 606, under the restoring force of the spring 607, the limiting post 604 automatically springs back and locks into the new position, and the lever 606 also returns to the upper end of the slide groove 608.

[0035] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 5The bottom surface of the card holder 1 is provided with a limiting inner groove 102 for accommodating the turntable 603. A limiting ring 101 is provided around the limiting inner groove 102. Several slots 103 are evenly provided in the circumferential direction inside the limiting ring 101. The top of the limiting post 604 can be inserted into the slot 103 to lock the angle of the trolley 2. A threaded groove 104 is provided at the diagonal inside the limiting inner groove 102. The bolt 602 passes through the top plate 601 and is threaded into the inside of the threaded groove 104.

[0036] Specifically, the bottom center of the card holder 1 is recessed to form a circular limiting groove 102. The size of the limiting groove 102 is adapted to the aforementioned turntable 603 and top plate 601 to accommodate the turntable 603 and provide it with rotation space. A recessed limiting ring 101 is formed around the limiting groove 102. Inside the limiting ring 101, several slots 103 are evenly spaced along the circumference. These slots 103 serve as positioning points for angle locking, and their shape matches the top of the limiting post 604. When the trolley 2 rotates to a specific angle, the limiting post 604 pops upward under the action of the spring 607, and its top can accurately insert into the corresponding slot 103, thereby locking the angle of the trolley 2 by mechanical locking to prevent it from deflecting during traction.

[0037] Furthermore, to securely suspend the trolley 2 below the mounting base 1, two threaded grooves 104 are formed diagonally on the inner bottom surface of the limiting inner groove 102. Bolts 602 pass through corresponding through holes on the top plate 601 from below and are screwed into the threaded grooves 104 for fastening. This connection method confines the top plate 601 within the limiting inner groove 102, thus bearing the weight of the trolley 2 while allowing the top plate 601 to rotate horizontally relative to the mounting base 1 with the bolt 602 as its axis or under the constraint of the bolt 602 head.

[0038] Please see the appendix Figure 7 Appendix Figure 9 and attached Figure 10 The auxiliary traction component 4 includes several traction rollers 401 arranged side by side inside the sliding surface 201. A first rotating shaft 403 is provided through the center of each traction roller 401, and the traction roller 401 is rotatably connected to the inner wall of the trolley 2 through the first rotating shaft 403. The outer surface of the traction roller 401 has a waisted structure with a concave middle and convex ends. The bottom of the first rotating shaft 403 extends to the outside of the traction roller 401 and is surrounded by a plurality of permanent magnet blocks 404. An inner ring 405 fixed inside the trolley 2 is sleeved on the outside of the permanent magnet blocks 404. An induction coil is provided inside the inner ring 405. A heating resistance wire 402 is embedded on the surface of the traction roller 401, and the heating resistance wire 402 is electrically connected to the induction coil inside the inner ring 405.

[0039] Specifically, the auxiliary traction assembly 4 includes several traction rollers 401 arranged linearly side-by-side along the cable travel direction. A first rotating shaft 403 is threaded through the central axis of each traction roller 401. The traction roller 401 is rotatably connected to the inner wall support of the trolley 2 via this first rotating shaft 403, allowing it to rotate freely as the cable is dragged. Notably, the outer circumferential surface of the traction roller 401 is designed as a concave-in-the-middle, convex-outward structure, similar to an hourglass or hyperboloid. This special geometry utilizes the component of gravity to force the passing wire to always remain in the central concave area of ​​the roller, preventing the wire from swaying left and right or rubbing against the inner wall of the trolley 2 during traction.

[0040] More importantly, the auxiliary traction assembly 4 also integrates a self-generating heating function. The bottom of the first rotating shaft 403 extends downwards beyond the traction roller 401, and multiple permanent magnet blocks 404 are mounted around this extension. These permanent magnet blocks 404 rotate synchronously with the traction roller 401, forming the rotor part of the power generation unit. Outside the permanent magnet blocks 404, an annular housing, i.e., an inner ring 405, is fixedly mounted on the bottom of the trolley 2. The inner ring 405 serves as the stator part, and an induction coil is pre-embedded inside it.

[0041] In terms of energy conversion and utilization, several heating resistance wires 402 are embedded on the surface of the traction roller 401. These heating resistance wires 402 are arranged axially or helically and are flush with the roller surface to avoid abrasion of the cable. The heating resistance wires 402 are electrically connected to the induction coil in the inner ring 405 through internal wires. In practical applications, the connection can be achieved through a brush slip ring structure or a non-contact induction power supply structure. When traction is performed, the cable drives the traction roller 401 to rotate, and the permanent magnet 404 rotates accordingly, cutting the magnetic field lines and generating an induced current in the coil of the inner ring 405. This current is delivered to the heating resistance wires 402, causing the roller surface to heat up, thereby performing online heat treatment on the cable in close contact with the roller surface, eliminating its internal stress and assisting in straightening.

[0042] Please see the appendix Figure 1 - Appendix Figure 4The adjusting and fixing mechanism 3 includes an adjusting component 31 and an anti-detachment component 32. The adjusting component 31 includes two L-shaped rods 311 that are slidably connected to the top of the card holder 1. Anti-friction pads 312 are fixedly connected to the inner sidewalls of the L-shaped rods 311. The adjusting component 31 also includes a first limiting rod 313 that passes through the sidewalls of the two L-shaped rods 311. A second limiting rod 315 is provided between the bottoms of the two L-shaped rods 311, and limiting springs 314 are provided on both sides of the second limiting rod 315. The two ends of the limiting springs 314 are fixedly connected to the opposite side of the two L-shaped rods 311. The anti-detachment component 32 includes two fixing ears 322 that are fixedly connected to the sidewalls of the L-shaped rods 311. The anti-detachment component 32 also includes a retaining screw 321 that is threaded into the inside of the two fixing ears 322. The retaining screw 321 and the first limiting rod 313 are located on both sides of the L-shaped rods 311. Specifically, the adjusting and fixing mechanism 3 is installed on the top of the clamping seat 1 to firmly clamp the entire traction device onto the tower angle steel of different sizes. The mechanism consists of two parts: the adjusting component 31, which is responsible for quickly adapting to the size, and the anti-detachment component 32, which is responsible for final locking. The main body of the adjusting component 31 is two inverted L-shaped clamps arranged opposite each other, namely L rods 311. The bottom of these two L rods 311 is slidably connected to the top surface of the clamping seat 1 and can move closer or further apart in the horizontal direction. In order to increase the clamping friction and protect the surface of the angle steel from being scratched, anti-friction pads 312, usually made of rubber or polyurethane, are fixedly bonded to the vertical inner wall of each L rod 311. The surface has anti-slip teeth.

[0043] To limit the movement trajectory of the L-bars 311 and provide automatic clamping force, the adjusting assembly 31 is also equipped with a guiding and elastic reset structure. Specifically, a first limiting rod 313 is provided with a horizontal optical axis penetrating through the side walls of the two L-bars 311, serving as the main guiding and supporting function to ensure smooth sliding of the L-bars 311. In addition, a second limiting rod 315 is also provided between the bottoms of the two L-bars 311 as an auxiliary guiding rod. Limiting tension springs 314 are sleeved on both sides of the second limiting rod 315, i.e., between the two L-bars 311. The two ends of the limiting tension springs 314 are respectively fixedly connected to the opposite side walls of the two L-bars 311. In the natural state, the limiting tension springs 314 are in a contraction tendency, pulling the two L-bars 311 closer to the center, thereby achieving initial adaptive elastic clamping of the angle steel placed between them.

[0044] To further prevent the device from loosening and falling off after initial clamping, an anti-detachment component 32 is also provided. This component includes two fixing ears 322, which are respectively welded or fixed to the outer walls of the two L-bars 311. A threaded retaining screw 321 passes laterally through the two fixing ears 322 and is threadedly connected to the screw hole inside the fixing ears 322. In terms of spatial layout, the retaining screw 321 is arranged parallel to the first limiting rod 313 and is located on both sides of the L-bars 311, forming a stable force-bearing frame. After the device is initially hung on the angle steel by elasticity, the operator only needs to rotate the retaining screw 321 to forcibly pull the two L-bars 311 closer using the feed force of the thread, applying a huge locking force to completely lock the device on the angle steel, ensuring safety and reliability.

[0045] Please see the appendix Figure 2 and attached Figure 6 The locking assembly 5 includes a blocking plate 501, which is rotatably connected to the top entrance of the sliding surface 201 via a second rotating shaft 502. A torsion spring 503 is sleeved on the outer side of the second rotating shaft 502 to keep the blocking plate 501 in a horizontal closed state.

[0046] Specifically, the core component of the locking assembly 5 is a rotatable blocking plate 501. One end of the blocking plate 501 is rotatably connected to the top entrance of the sliding surface 201 via a second pivot 502, allowing it to swing up and down around the pivot. To give the blocking plate 501 the ability to automatically lock, a torsion spring 503 is fitted on the outside of the second pivot 502; the installation method of the torsion spring 503 is carefully designed: one end abuts against or is fixed to the stationary inner wall of the trolley 2 or the pivot bracket, and the other end abuts against the back or interior of the blocking plate 501. In the initial state without external force, the torsional preload of the torsion spring 503 always acts on the blocking plate 501, forcing it to remain horizontal, thus spanning across the entrance of the sliding surface 201 like a cover, sealing the passage for cables.

[0047] When a drone is used to deploy cables, the cable presses down onto the surface of the barrier plate 501. The cable's own weight or impact force overcomes the elastic force of the torsion spring 503, forcing the barrier plate 501 to flip downwards and open. The cable then slides into the sliding surface 201 below. Once the cable is fully inside, the barrier plate 501 loses its downward pressure and quickly returns to a horizontal closed state under the rebound force of the torsion spring 503, sealing the entrance again. At this point, even if the cable bounces violently and hits the lower surface of the barrier plate 501 during the traction process, the barrier plate 501 is typically designed to open downwards but not upwards due to structural limitations. The cable cannot push open the barrier plate 501 and is thus firmly locked inside the trolley 2, ensuring the safety of high-altitude operations.

[0048] Please refer to the attached document. Figure 11The active traction assembly 8 includes a traction seat 801, a traction shaft 803 is rotatably connected inside the traction seat 801, a drive motor 802 is installed on one side of the traction seat 801, the output shaft of the drive motor 802 is fixedly connected inside the traction shaft 803, and the traction rope 7 is installed on the outside of the traction shaft 803.

[0049] Specifically, this device is also equipped with an active traction component 8 to assist the traction rope 7 in passing over the tower. This component includes a traction seat 801 fixedly mounted on the side wall of the trolley 2. A drum-shaped traction shaft 803 is rotatably mounted inside the traction seat 801, and the traction rope 7 is pre-wound on the outer side of the traction shaft 803. A drive motor 802 (preferably a geared motor with a self-locking function) is connected to one side of the traction seat 801, and its output shaft is fixedly connected to the traction shaft 803. Under the control of the intelligent system, the drive motor 802 can drive the traction shaft 803 to rotate actively, completing the docking and winding of the UAV traction rope, realizing the automated passage of the cable over the trolley; during the main traction phase, the motor stops working, and the clutch mechanism allows the traction shaft 803 to freely rotate with the cable. Working principle: When using this device, the operator first installs the device on the tower angle steel by adjusting the fixing mechanism 3. The operator pulls the two L rods 311 in the adjusting assembly 31 outwards and in the opposite direction to overcome the resistance of the limiting spring 314 and widen the distance between them; after the L rods 311 are straddled on both sides of the tower angle steel, the operator releases the lever, and the limiting spring 314 rebounds, causing the two L rods 311 to move inwards, using the anti-friction pad 312 to adhere to the surface of the angle steel to achieve initial clamping; subsequently, the operator tightens the fixing screw 321 in the anti-detachment assembly 32, and the threaded driving force forces the two L rods 311 to tighten further inwards, locking the clamp 1 to the angle steel.

[0050] After the device is fixed, the angle of the trolley 2 is adjusted according to the traction direction requirements. This device provides two adjustment modes: In manual adjustment mode, the operator pulls down the lever 606 on the side wall of the trolley 2. The lever 606 slides in the slide groove 608 and drives the internal limiting post 604 to move downward, compressing the spring 607 and causing the top of the limiting post 604 to disengage from the slot 103 on the bottom surface of the card seat 1. At this time, in the unlocked state, the turntable 603 drives the trolley 2 to rotate relative to the card seat 1. When the target direction is reached, the lever 606 is released, the spring 607 returns to its original position, pushes the limiting post 604 upward and inserts it into the corresponding slot 103, and completes the angle locking. In intelligent remote adjustment mode, the ground operator sends an unlock command via a handheld terminal. The central control unit inside the trolley 2 controls the electromagnetic actuator to engage the limiting post 604, causing it to automatically disengage from the slot 103. At this time, the trolley 2 is in a free-rotating state, automatically rotating and finding the optimal force direction under the natural tension of the traction rope 7 (adaptive alignment). When the attitude sensor detects that the angle has stabilized, the system automatically cuts off the power, and the limiting post 604 pops out under the action of the spring 607 and inserts into the nearest slot 103, achieving remote automatic locking.

[0051] When the wire is deployed via drone or other means, it lands on the blocking plate 501 of the locking assembly 5. The weight of the wire overcomes the torque of the torsion spring 503 on the second rotating shaft 502, forcing the blocking plate 501 to flip downwards and open the entrance. The wire passes through the entrance and falls into the gap between the two sliding surfaces 201 inside the trolley 2, activating the active traction assembly 8. The intelligent system controls the drive motor 802 to start, driving the traction shaft 803 on the side wall to rotate. The operator connects the deployed guide rope to the pre-set traction line 7 on the traction shaft 803, using the rotational power of the motor to actively wind or drag the guide rope through the trolley 2 until the thicker main traction rope is fully inserted into the chute 608 and pressed against the traction roller 401. Subsequently, the motor stops working and disengages the clutch, and the traction shaft 803 spins freely with the cable and lands on the auxiliary traction assembly 4. After the wire enters, the blocking plate 501 loses downward pressure and, under the action of the torsion spring 503, rebounds to a horizontal closed state, sealing the entrance at the top of the sliding surface 201.

[0052] At the start of the traction operation, the wire moves along the inside of the trolley 2 under the action of traction force. The wire contacts the traction roller 401 and, through friction, drives the traction roller 401 to rotate around the first rotating shaft 403. The waist-shaped structure of the traction roller 401 keeps the wire at the center of the roller. Simultaneously, the rotation of the traction roller 401 drives the permanent magnet block 404 at its bottom to rotate synchronously. The permanent magnet block 404 moves relative to the stationary inner ring 405, cutting magnetic field lines and generating an induced current in the induction coil inside the inner ring 405. This induced current is transmitted to the heating resistance wire 402 on the surface of the traction roller 401, converting electrical energy into heat energy, raising the temperature of the roller surface and heating the passing wire.

[0053] Based on the aforementioned mechanical structure, this invention also provides a self-powered intelligent traction control system. This system is deeply coupled with the mechanical device, utilizing the mechanical energy generated by the rotation of the traction rollers to convert it into electrical energy for drive, eliminating the need for an external power supply. The detailed structure and workflow of this system are as follows: The intelligent system is integrated into the internal cavity of the side wall of the trolley 2 and mainly includes: a central control unit (MCU), a power management module, a wireless communication module, a sensor group, and an electromagnetic actuator.

[0054] Power management module: Its input terminal is electrically connected to the induction coil inside the inner ring 405, and its output terminal is connected to the heating resistance wire 402 and the built-in energy storage unit (such as a supercapacitor or lithium battery), as well as the drive motor 802 of the active traction component 8. The module integrates a rectifier and voltage regulator circuit to convert the AC power generated by the induction coil into DC power and has PWM (pulse width modulation) power regulation function. The sensor group embedded under the surface heat-conducting layer of the traction roller 401 includes a temperature sensor for real-time monitoring of the temperature of the contact surface between the roller and the cable. The Hall speed sensor arranged on the side wall of the inner ring 405, together with the permanent magnet 404 on the first rotating shaft 403, is used to monitor the rotation speed of the traction roller and then calculate the cable deployment speed. The attitude sensor (IMU) installed on the main board of the trolley 2 is used to monitor the tilt angle and vibration frequency of the trolley. In the direction limiting component 6, an electromagnetic actuator, including a linear electromagnet, is added at the tail end of the limiting post 604 or the connection of the lever 606. The electromagnet is controlled by the central control unit. When energized, the electromagnetic attraction it generates can overcome the resistance of the spring 607 and automatically drive the limit post 604 to retract downwards, so that it is disengaged from the slot 103. The wireless communication module adopts a low-power communication protocol to receive instructions from the ground handheld terminal and send status data.

[0055] At the start of the traction operation, the cable drives the traction roller 401 to rotate, the permanent magnet 404 cuts the magnetic field lines, and the induction coil generates current. The power management module prioritizes charging the energy storage unit. When the voltage reaches the operating threshold, it automatically wakes up the central control unit and enters the following control logic: Low temperature start-up mode: When the temperature sensor detects that the ambient temperature is lower than the set value (e.g., 5℃) and the speed sensor detects that the cable is moving, the central control unit controls the power management module to output the maximum power to the heating resistance wire 402, converting the traction kinetic energy into heat energy, quickly softening the stiff cable and preventing the cable from curling due to the cable memory effect.

[0056] Constant temperature protection mode: When the roller surface temperature exceeds the safety threshold (e.g., 70℃ to prevent burns to cable insulation), the central control unit automatically reduces the PWM duty cycle or cuts off the heating circuit. At this time, excess induced electrical energy is introduced into the energy storage unit for storage, which not only achieves overheat protection but also completes energy recovery, reserving energy for subsequent electromagnetic actions.

[0057] When ground operators discover that the trolley angle is incorrect and causes the rope to rub against the cable, they send an unlocking command through a handheld terminal. The central control unit uses the electrical energy stored in the battery storage unit to drive the electromagnetic actuator to pull the limit post 604 downward to disengage it from the slot 103.

[0058] After unlocking, trolley 2 is released from its mechanical lock and enters a free-rotating state. Under the natural action of the tension in the traction rope, trolley 2 will automatically rotate to the optimal angle (adaptive alignment) that is consistent with the direction of the resultant force, at which point the friction between the cable and the chute is minimized.

[0059] When the attitude sensor detects that the angle of the trolley 2 no longer changes significantly (i.e., it has found a balanced position) and maintains this position for a set time (e.g., 5 seconds), or when a locking command is received from ground personnel, the central control unit disconnects the power supply to the electromagnet. The spring 607 pushes the limit post 604 to automatically pop out and insert into the nearest slot 103, completing the mechanical locking of the new angle and preventing subsequent invalid swaying due to wind force.

[0060] The system continuously monitors the device status during operation and establishes the following safety logic: Disengagement / Jaw Alarm: If the Hall speed sensor shows that the roller has stopped rotating (speed is 0), but at the same time the attitude sensor detects that the trolley is experiencing severe high-frequency vibration or abnormal large-angle tilt, the system determines that the cable may be jammed or the trolley may have jumped out of the trolley.

[0061] Overload / Overspeed alarm: If the speed exceeds the safety threshold, the system determines that the traction speed is too fast and there is a risk of loss of control.

[0062] Response mechanism: Once the above alarm conditions are triggered, the central control unit will immediately send an alarm signal to the ground terminal via the wireless communication module, prompting the operator to stop the tractor immediately to prevent the accident from escalating.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A traction device for use on a tower, comprising a mounting bracket (1) and a pulley (2), characterized in that, The card holder (1) is provided with an adjustment and fixing mechanism (3) for connecting the traction device and the iron tower. The trolley (2) is located directly below the card holder (1), and a direction limiting component (6) for adjusting the angle is provided between the trolley (2) and the card holder (1). The trolley (2) has two symmetrical sliding surfaces (201) inside, and each sliding surface (201) is equipped with an auxiliary traction component (4) for pulling the wire. A locking component (5) is provided at the top of the sliding surface (201). The trolley (2) is also equipped with a self-powered intelligent traction control system, which is used to monitor the status of the device and cooperate with the direction limiting component (6) to control the angle locking and unlocking of the trolley (2); an active traction component (8) is provided directly below the trolley (2), and the trolley (2) and the active traction component (8) are connected by a traction rope (7). The directional limiting assembly (6) includes a turntable (603), the bottom of which is fixedly connected to the top center of the trolley (2), and a top plate (601) is fixedly connected to the top of the turntable (603). Bolts (602) are installed at the diagonal corners inside the top plate (601). A limiting post (604) is slidably connected inside the trolley (2). A limiting plate (605) is fixedly connected to the outside of the limiting post (604). A spring (607) is sleeved on the outside of the limiting post (604). A lever (606) is fixedly connected to one side of the limiting plate (605). A groove (608) is vertically opened on the side wall of the trolley (2). The lever (606) extends through the groove (608) to the outside of the trolley (2).

2. A traction device for use on a tower according to claim 1, characterized in that, The bottom surface of the card holder (1) is provided with a limiting inner groove (102) for accommodating the turntable (603), and a limiting ring (101) is provided around the limiting inner groove (102); a plurality of card slots (103) are evenly provided in the circumferential direction inside the limiting ring (101), and the top of the limiting post (604) can be inserted into the card slot (103) to lock the angle of the trolley (2); a threaded groove (104) is provided at the diagonal inside the limiting inner groove (102), and the bolt (602) passes through the top plate (601) and is threaded into the inside of the threaded groove (104).

3. A traction device for towers according to claim 1, characterized in that, The sliding surface (201) has an arc-shaped structure that is concave towards the center of the trolley (2), and the two sliding surfaces (201) are symmetrically arranged about the center line of the trolley (2), forming a gap between the two sliding surfaces (201) into which the power supply line falls.

4. A traction device for use on a tower according to claim 1, characterized in that, The auxiliary traction assembly (4) includes several traction rollers (401) arranged side by side inside the sliding surface (201). A first rotating shaft (403) is provided through the center of the traction roller (401), and the traction roller (401) is rotatably connected to the inner wall of the trolley (2) through the first rotating shaft (403). The outer surface of the traction roller (401) has a waisted structure with a concave middle and convex ends.

5. A traction device for use on a tower according to claim 4, characterized in that, The bottom of the first rotating shaft (403) extends to the outside of the traction roller (401) and is surrounded by a plurality of permanent magnet blocks (404). The outer side of the permanent magnet blocks (404) is fitted with an inner ring (405) fixed inside the trolley (2). An induction coil is provided inside the inner ring (405). A heating resistance wire (402) is embedded on the surface of the traction roller (401). The heating resistance wire (402) is electrically connected to the induction coil inside the inner ring (405).

6. A traction device for towers according to claim 1, characterized in that, The adjustment and fixing mechanism (3) includes an adjustment component (31) and an anti-detachment component (32); the adjustment component (31) includes two opposing L rods (311) slidably connected to the top of the card holder (1), and an anti-friction pad (312) is fixedly connected to the inner side wall of the L rod (311); the anti-detachment component (32) includes two fixing ears (322) fixedly connected to the side wall of the L rod (311), and a retaining screw (321) is threaded between the two fixing ears (322).

7. A traction device for use on a tower according to claim 6, characterized in that, The adjustment assembly (31) further includes a first limiting rod (313), the fixing screw (321) and the first limiting rod (313) are located on both sides of the L rod (311), the first limiting rod (313) passes through the side walls of the two L rods (311); a second limiting rod (315) is provided between the bottoms of the two L rods (311), and a limiting spring (314) is provided on both sides of the second limiting rod (315), and the two ends of the limiting spring (314) are fixedly connected to the opposite side between the two L rods (311).

8. A traction device for use on a tower according to claim 1, characterized in that, The locking assembly (5) includes a blocking plate (501), which is rotatably connected to the top entrance of the sliding surface (201) via a second rotating shaft (502). A torsion spring (503) is sleeved on the outside of the second rotating shaft (502) to keep the blocking plate (501) in a horizontal closed state.

9. A traction device for towers according to claim 1, characterized in that, The active traction assembly (8) includes a traction seat (801), a traction shaft (803) is rotatably connected inside the traction seat (801), a drive motor (802) is installed on one side of the traction seat (801), the output shaft of the drive motor (802) is fixedly connected inside the traction shaft (803), and the traction rope (7) is installed on the outside of the traction shaft (803).

10. A traction device for use on a tower according to claim 5, characterized in that, The self-powered intelligent traction control system includes a central control unit, a power management module, a sensor group, a wireless communication module, and an electromagnetic actuator. The input end of the power management module is electrically connected to the induction coil in the inner ring (405), and the output end of the power management module is connected to the heating resistance wire (402) and the built-in energy storage unit, respectively. The sensor group includes a temperature sensor on the surface of the traction roller (401), a speed sensor on the side wall of the inner ring (405), and an attitude sensor on the main board of the trolley (2). The electromagnetic actuator includes an electromagnet on the direction limiting component (6), and the output end of the electromagnet is connected to the limiting post (604) or the lever (606) to drive the limiting post (604) to overcome the resistance of the spring (607) and disengage from the slot (103) when energized.

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