A traction device for laying electric construction cable in a coal-fired power plant

Abstract

The present application relates to the technical fields of cable laying traction, and discloses a power plant coal conveying electric construction cable laying traction device, which comprises a mounting seat, a body is arranged on the top of the mounting seat, an adjusting mechanism is arranged on the body, the adjusting mechanism is used for adjusting the clamping height of the cable, and the adjusting mechanism comprises a supporting frame. The power plant coal conveying electric construction cable laying traction device is provided with the adjusting mechanism, the supporting sliding block vertically slides on the supporting frame, and the positioning screw is inserted into the positioning hole at different heights to be rigidly fixed, so that the adjustable space height difference is arranged at the head and tail of the body, the cable passing through is forced to produce the inclined bending corresponding to the height difference, the rolling friction of the roller is used to replace the sliding friction, and the self-adapting turning, uphill climbing or downhill descending traction of the cable on the complex slope terrain of the power plant can be perfectly realized without scratching the cable sheath.

Description

Technical Field

[0001] This invention relates to the field of cable laying and traction technology, specifically to a cable laying and traction device for electrical construction of coal conveying in thermal power plants. Background Technology

[0002] During the construction of coal conveying systems in thermal power plants, a large number of power and control cables typically need to be laid along coal conveying bridges, underground utility tunnels, and towering transfer stations. These laying paths often span multiple building heights and involve a large amount of sloping terrain, including uphill and downhill sections. Therefore, specialized cable laying and traction devices must be used to constrain, lift, and guide the cables to ensure the continuity and safety of electrical construction.

[0003] However, existing cable laying traction devices, when faced with the complex sloping terrain of coal conveying sites in thermal power plants, mostly employ fixed, non-adjustable horizontal rigid structures for their internal guide support structures. This makes it impossible to flexibly adjust the height according to the actual inclination angle and slope of the construction site. When the cable is forced through these dead angles with transitions between horizontal and sloping sections under strong traction, severe local shear forces and high-load hard sliding friction easily occur between the cable and the traditional guide device. This not only easily scratches and cracks the cable insulation over a large area, causing serious electrical short circuit hazards, but can also lead to the cable getting stuck or bent at the turning slope due to excessive frictional resistance. This prevents smooth adaptive uphill or downhill traction, significantly reducing the overall laying efficiency of electrical construction in coal conveying systems of thermal power plants. Summary of the Invention

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a cable laying traction device for electrical construction in coal conveying power plants. This device solves the problem that existing cable laying traction devices are prone to severe sliding friction and jamming when cables pass through slope bends, which can easily scratch the insulation sheath or cause dead bends, making it impossible to achieve smooth adaptive slope traction.

[0005] Technical solution To achieve the above objectives, the present invention provides the following technical solution: A cable laying traction device for electrical construction in coal conveying at a thermal power plant includes: a mounting base, on the top of which is a body; and an adjustment mechanism mounted on the body, used to adjust the clamping height of the cable. The adjustment mechanism includes a support frame fixedly connected to the top of the body, with two support sliders symmetrically slidably connected to the support frame. A positioning screw is threaded through each support slider and connected to the inner wall of the support slider. The side wall of the support frame has an array of positioning holes, and a positioning post is fixedly connected between two support sliders. The two supporting sliders are slidably connected to movable columns. A positioning concave roller is rotatably connected to the middle of the positioning column, and a movable concave roller is rotatably connected to the middle of the movable column. Both the positioning concave roller and the movable concave roller have annular arc-shaped grooves. Two adjustment mechanisms are symmetrically arranged at the front and rear ends of the machine body. A pressing mechanism is mounted on the adjustment mechanism to apply uniform pressure to the two movable columns. A follow-up traction mechanism is mounted on the adjustment mechanism to apply adjustable traction force to the cable section between the two adjustment mechanisms.

[0006] Preferably, the body and the mounting base are connected by bolts, and the mounting base is provided with mounting holes for fixing the mounting base to the plane.

[0007] Preferably, the pressing mechanism includes a liquid storage chamber, which is fixedly connected to the top of the support frame. A sealing cover is provided on the top of the liquid storage chamber to close the top opening of the liquid storage chamber. Four hollow telescopic rods are provided at the bottom of the liquid storage chamber. One end of each of the four hollow telescopic rods is fixedly connected to the bottom of the liquid storage chamber, and the other end is fixedly connected to the top of the movable column. Both ends of the movable column are fixed to the hollow telescopic rods, and the hollow telescopic rods communicate with the inner cavity of the liquid storage chamber.

[0008] Preferably, both support frames are located at the bottom of the support frame, and the two support frames are symmetrically arranged at both ends of the bottom of the liquid storage tank.

[0009] Preferably, the outer wall of the liquid storage tank is provided with a scale, and the liquid storage tank is made of a transparent, visible material.

[0010] Preferably, the follow-up traction mechanism includes side traction columns, which are rotatably connected to the side walls of the support sliders. All four support sliders are rotatably connected to the side traction columns. A movable long rod is provided on the inner wall of each side traction column, with both ends of the movable long rod passing through two of the side traction columns. A middle traction column is fixedly connected to the middle of the movable long rod. A follow-up frame is fixedly connected between the two middle traction columns. Two follow-up grooves are provided on the side wall of the follow-up frame. Guide blocks are slidably connected to the inner wall of each follow-up groove. Four guide blocks are provided, and the four guide blocks are symmetrically arranged in pairs on the inner walls of two follower slides. Traction rollers are rotatably connected between the two guide blocks. There are two traction rollers, and the two traction rollers are symmetrically arranged. A pressing spring is connected between the guide block and the inner wall of the follower slide. One end of the pressing spring is fixedly connected to the inner wall of the follower slide, and the other end of the pressing spring is fixedly connected to the guide block. Traction motors are fixedly connected to the two bottom guide blocks, and the output shafts of the two traction motors are fixedly connected to the two traction rollers.

[0011] Preferably, the movable long rod is provided with a ball head block, which is fixedly connected to both ends of the movable long rod, and a ball bearing is rotatably connected to the inner wall of the side traction column, with the ball bearing arranged in a circumferential array on the inner wall of the side traction column.

[0012] Preferably, a linkage control line is connected between the two traction motors, and a telescopic control line is fixedly connected to the bottom of the linkage control line. One end of the telescopic control line is fixedly connected to the linkage control line, and the other end of the telescopic control line is connected to the machine body.

[0013] Preferably, a handwheel is fixedly connected to the top end of the positioning screw, the outer periphery of the handwheel is wrapped with a rubber anti-slip sleeve, and the diameter of the handwheel is larger than the outer diameter of the thread of the positioning screw.

[0014] Beneficial effects Compared with the prior art, the present invention provides a traction device for laying electrical cables in coal conveying construction in thermal power plants, which has the following beneficial effects: 1. This is a cable laying traction device for electrical construction in coal conveying in thermal power plants. It utilizes an adjustment mechanism, in which a support slider slides vertically on a support frame and is rigidly fixed by inserting positioning screws into positioning holes at different heights. This creates an adjustable spatial height difference at both ends of the device, forcing the cable to bend in accordance with the height difference. By using the rolling friction of rollers instead of sliding friction, the device perfectly achieves adaptive turning, sloping ascent, or descent of the cable on the complex slope terrain of thermal power plants without scratching the cable sheath.

[0015] 2. This is a cable laying traction device for electrical construction in coal conveying in thermal power plants. It utilizes a pressing mechanism to provide initial hydrostatic pressure through the gravity of the liquid in the storage tank. By utilizing the characteristic of the hollow telescopic rod connected to the storage tank, the mechanical pressure is converted into an adaptive increase in the height of the water column in the connected system when the cable jumps vertically. Based on Pascal's law, this generates a proportionally increased fluid reaction force. Without relying on external pumps or valves, it achieves uninterrupted, absolutely symmetrical, and constant downward adaptive elastic pressing of the cable, while also providing hydraulic buffering and shock absorption.

[0016] 3. This type of traction device for laying electrical cables in coal conveying construction in thermal power plants utilizes a follow-up traction mechanism. Through the cooperation of side traction columns, movable long rods, ball head blocks, and rolling balls, a multi-degree-of-freedom rolling friction ball hinge is formed, enabling the follow-up frame to automatically align and follow the cable's posture perfectly according to the cable's inclined surface. After the cable is clamped by a floating clamping spring, the traction rollers are synchronously driven by dual traction motors to actively apply coaxial auxiliary thrust. This not only shares the heavy-load tension of the main traction machine but also eliminates the risk of corner bends, damage, and line breakage through the travel redundancy protection of the telescopic control line. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the supporting frame of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the pressing mechanism of the present invention; Figure 5 This is a schematic diagram of the follower traction mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the follower frame of the present invention; Figure 7 This is a schematic diagram of the structure of the ball bearing of the present invention; Figure 8 This is a schematic diagram of the structure of the traction roller of the present invention.

[0018] In the diagram: 1. Mounting base; 2. Body; 3. Adjustment mechanism; 31. Support frame; 32. Support slider; 33. Positioning hole; 34. Positioning screw; 35. Positioning column; 36. Movable column; 37. Positioning concave roller; 38. Movable concave roller; 4. Pressing mechanism; 41. Liquid storage tank; 42. Sealing cap; 43. Scale; 44. Hollow telescopic rod; 5. Follow-up traction mechanism; 51. Side traction column; 52. Movable long rod; 53. Central traction column; 54. Ball head block; 55. Follow-up frame; 56. Follow-up slide; 57. Guide block; 58. Traction roller; 59. Pressing spring; 510. Traction motor; 511. Linkage control line; 512. Telescopic control line; 513. Ball bearing. Detailed Implementation

[0019] The technical solutions of 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.

[0020] Example 1, please refer to Figures 1-3 A cable laying traction device for electrical construction in coal conveying at a thermal power plant includes: a mounting base 1, with a body 2 mounted on top of the mounting base 1; and an adjustment mechanism 3 mounted on the body 2. The adjustment mechanism 3 is used to adjust the clamping height of the cable. The adjustment mechanism 3 includes a support frame 31, which is fixedly connected to the top of the body 2. Two support sliders 32 are symmetrically slidably connected to the support frame 31. A positioning screw 34 is threaded through the support slider 32 and connected to the inner wall of the support slider 32. The side wall array of component 1 has several positioning holes 33. Rotating the positioning screw 34 allows it to be axially moved and inserted into the positioning hole 33 to fix the support slider 32. A positioning post 35 is fixedly connected between two support sliders 32, and a movable post 36 is slidably connected to the two support sliders 32, allowing the movable post 36 to move vertically back and forth. A positioning concave roller 37 is rotatably connected to the middle of the positioning post 35, and a movable concave roller 38 is rotatably connected to the middle of the movable post 36. Both the positioning concave roller 37 and the movable concave roller 38 have annular arc grooves.

[0021] Two adjustment mechanisms 3 are symmetrically arranged at the beginning and end of the body 2. The height of the adjustment mechanisms 3 at the beginning and end of the body 2 can be adjusted by manually pushing the support slider 32 up or down, so that the support slider 32 slides vertically on the support frame 31 fixed to the top of the body 2. When the support slider 32 moves to the preset height and aligns with the positioning holes 33 arrayed on the side wall of the support frame 31, the positioning screw 34 passing through the support slider 32 is manually rotated, driving the end of the positioning screw 34 to move axially and insert into the positioning hole 33. The vertical degree of freedom of the support slider 32 is restricted by the physical locking of the pin-type positioning lock, so as to achieve rigid fixation of the support slider 32.

[0022] A positioning column 35 is rigidly fixed laterally between the two support sliders 32. Therefore, after the support sliders 32 are positioned, the concave rollers 37 are positioned. The annular arc groove of the positioning concave rollers 37 forms a rigid support and guide surface under the cable. At the same time, the cable to be laid is passed through the gap between the positioning concave rollers 37 and the movable concave rollers 38. The symmetrical arc combination of the two concave rollers restricts the cable radially within the circular hole-shaped channel to prevent it from derailing to the left or right. At this time, another adjustment mechanism 3 is adjusted to lock the two end support sliders 32 into the positioning holes 33 at different heights on the support frame 31, so that a height difference is formed between the positioning concave rollers 37 at both ends of the machine body 2. That is, the inlet height and outlet height of the cable are inconsistent. When the cable passes through the two adjustment mechanisms 3 with height difference under the action of traction force, the cable produces an inclined bend that conforms to the height difference. Thus, the rolling friction of the rollers replaces the sliding friction, and the cable can be adaptively turned, climbed or descended on the slope without scratching the cable sheath.

[0023] Pressing mechanism 4, which is mounted on adjusting mechanism 3, is used to apply uniform pressure to the two movable columns 36, provide dynamic clamping force to the movable columns 36, prevent cable slippage and track skipping, and adapt to cable outer diameter errors; Follow-up traction mechanism 5, which is mounted on adjusting mechanism 3, is used to apply adjustable traction force to the cable section between the two adjusting mechanisms 3, and when a height difference is formed between the two adjusting mechanisms 3, it applies adaptive auxiliary thrust to the middle cable to prevent the cable from bending or wearing excessively at corners.

[0024] The main body 2 is bolted to the mounting base 1. The mounting base 1 has mounting holes for fixing it to a flat surface. By creating these holes and using fasteners to anchor the mounting base 1 to the ground, coal conveyor steel structure, or construction platform of the power plant, the dynamic mechanical load generated during cable laying can be directly distributed and transferred to the rigid surface of the building structure, preventing displacement, overturning, or severe vibration during cable pulling. A handwheel is fixedly connected to the top of the positioning screw 34, and the outer circumference of the handwheel is covered with a rubber anti-slip sleeve 310. The diameter of the handwheel is larger than the thread outer diameter of the positioning screw 34 to facilitate manual torque application.

[0025] Example 2, please refer to Figure 1 , Figure 4 The pressing mechanism 4 includes a liquid storage tank 41, which is fixedly connected to the top of the support frame 31. The liquid storage tank 41 contains liquid, and a sealing cover 42 is provided on the top of the liquid storage tank 41 to close the top opening of the liquid storage tank 41 and prevent the liquid from evaporating and decreasing. Hollow telescopic rods 44 are provided at the bottom of the liquid storage tank 41. Four hollow telescopic rods 44 are provided. One end of the four hollow telescopic rods 44 is fixedly connected to the bottom of the liquid storage tank 41, and the other end of the four hollow telescopic rods 44 is fixedly connected to the top of the movable column 36. Hollow telescopic rods 44 are fixedly connected to both ends of the movable column 36, and the hollow telescopic rods 44 communicate with the inner cavity of the liquid storage tank 41.

[0026] When the cable to be laid passes through the gap between the positioning concave roller 37 and the movable concave roller 38, the water in the storage tank 41, which contains a preset mass of water, will generate a downward hydrostatic pressure under its own weight, according to the principle of hydrostatics. This pressure is transmitted downward through the four hollow telescopic rods 44 that are completely connected to the inner cavity at the bottom of the storage tank 41, and acts directly on the pressure-bearing surface at the bottom of the four hollow telescopic rods 44, thus being converted into an initial axial pressing force that is absolutely vertically downward in four directions. This force is simultaneously applied to the top of the two ends of the corresponding movable columns 36, driving the movable columns 36 to move downward with the movable concave roller 38, pressing against the upper surface of the cable and providing it with a basic initial clamping force.

[0027] During the dynamic process of traction laying, when the cable jumps vertically upwards due to uneven surface, outer diameter tolerance, or tension fluctuations, the cable will overcome the water pressure and push the movable concave roller 38 upwards, which will also move the corresponding movable column 36 upwards. This will compress the two hollow telescopic rods 44 that are fixedly connected to the top of the movable column 36, causing the internal cavity volume of the two hollow telescopic rods 44 to shrink. This will cause the water inside to be pushed upwards and flow back into the liquid storage tank 41 fixed to the top of the support frame 31, causing the overall liquid level in the liquid storage tank 41 to rise. The rise in the total water column height will cause the hydrostatic pressure at the bottom of the entire connected system to increase proportionally instantaneously. Based on Pascal's law, this increased pressure will be instantaneously fed back to the interior of all four hollow telescopic rods 44, causing the axial force output downwards to increase proportionally. This will enable the two ends of the movable column 36 to be pressed downwards with a stronger reaction force.

[0028] When the cable returns to normal after jumping, the water at a high level in the storage tank 41 will automatically flow back into the hollow telescopic rod 44 under the drive of gravity, driving it to extend downward and reset, and continue to maintain a constant reference hydrostatic pressure. Thus, without relying on any external active power pumps or valves, the continuous elastic pressure applied to both ends of the two movable columns 36 is achieved without interruption, self-adaptive and always constantly downward without relying on any external active power pumps or valves, ensuring that the cable is stably clamped throughout the entire process.

[0029] The core functions of this mechanism are as follows: First, it cleverly utilizes the physical properties of water flowing downwards and pressure self-balancing within the communicating vessel, ensuring uniform and symmetrical downward pressure output from the four hollow telescopic rods 44. This completely overcomes the problem of uneven clamping force caused by manufacturing errors, unilateral fatigue, or uneven loads in traditional rigid mechanical springs, preventing the cable from tilting or jamming during traction. Second, it acts as a natural hydraulic buffer and shock absorption system. When the cable passes through at high speed, causing high-frequency vibrations, the reciprocating flow of water between the liquid storage tank 41 and the four hollow telescopic rods 44 effectively absorbs and dissipates mechanical impact energy, avoiding hard collisions and greatly protecting the movable concave roller 38 and the cable sheath from wear. Third, the sealing cover 42 on top of the liquid storage tank 41 seals off the internal space, effectively preventing the water in the liquid storage tank 41 from evaporating and decreasing due to heat in the harsh environment of high temperature and dust at the thermal power plant construction site. This ensures that the adaptive balancing pressing mechanism 4 can provide reliable elastic clamping constraints for cable laying in a long-term, stable, and maintenance-free manner.

[0030] Both support frames 31 are located at the bottom of the support frame 31. The two support frames 31 are symmetrically arranged at both ends of the bottom of the liquid storage tank 41. The symmetrical design eliminates the overturning moment caused by unilateral force, ensuring that the liquid storage tank 41 always maintains absolute level and stability when subjected to the impact of internal high-pressure water flow. This effectively prevents fatigue damage to mechanical connection parts under long-term high-load construction and ensures that the system can continuously and stably press downward.

[0031] The outer wall of the liquid storage tank 41 is equipped with a scale 43. The liquid storage tank 41 is made of a transparent, visible material. According to the principle of hydrostatics, the continuous pressure at the bottom depends entirely on the total height of the water column inside the liquid storage tank 41. Due to the harsh environment at the coal conveying construction site of the thermal power plant, if the sealing ring of the hollow telescopic rod 44 wears and leaks, or if the moisture decreases due to a decrease in sealing performance, the cable clamping force will be insufficient, causing the cable to slip or derail. By designing the liquid storage tank 41 as a transparent, visible material, and in conjunction with the scale 43 on the outer wall, the previously unobservable internal fluid movement is transformed into a visible scale display.

[0032] Example 3, please refer to Figure 5 - Figure 8 The follow-up traction mechanism 5 includes a side traction column 51, which is rotatably connected to the side wall of the support slider 32. All four support sliders 32 are rotatably connected to the side traction column 51. A movable long rod 52 is provided on the inner wall of the side traction column 51. The two ends of the movable long rod 52 pass through two side traction columns 51 respectively. A middle traction column 53 is fixedly connected to the middle of the movable long rod 52. A follow-up frame 55 is fixedly connected between the two middle traction columns 53. A follow-up groove 56 is provided on the side wall of the follow-up frame 55. Two follow-up grooves 56 are provided. A guide block 57 is slidably connected to the inner wall of the follow-up groove 56. There are four guide blocks 57, which are symmetrically arranged in pairs on the inner walls of the two follower slides 56. Traction rollers 58 are rotatably connected between the two guide blocks 57. There are two traction rollers 58, which are symmetrically arranged. A pressing spring 59 is connected between the guide block 57 and the inner wall of the follower slide 56. One end of the pressing spring 59 is fixedly connected to the inner wall of the follower slide 56, and the other end of the pressing spring 59 is fixedly connected to the guide block 57. Traction motors 510 are fixedly connected to the two bottom guide blocks 57. The output shafts of the two traction motors 510 are fixedly connected to the two traction rollers 58.

[0033] When the adjustment mechanisms 3 at both ends of the machine body 2 adjust the height of the support sliders 32 on the support frame 31 to form a specific terrain slope in the middle cable section, the four side traction columns 51 rotatably connected to the side walls of the support sliders 32 at both ends will rotate adaptively in the vertical plane to adapt to the slope. The rotation and height change of the side traction columns 51 directly drive the movable long rods 52, which are respectively inserted into the inner walls of the two side traction columns 51, to tilt adaptively, thereby adjusting the axial angle of the movable long rods 52 in space so that they remain parallel to the cable slope between the adjustment mechanisms 3 at both ends. The tilt and position of the movable long rods 52 are transmitted through the central traction column 53 rigidly fixed in the middle of them. The cable is handed over to the follower frame 55 sandwiched between the two intermediate traction columns 53, so that the spatial posture of the follower frame 55 in the middle section of the cable is synchronized with the actual running trajectory of the cable and the angle is adaptively followed. At this time, the cable passes through the inside of the follower frame 55. The four guide blocks 57, which are symmetrically arranged in the two follower slides 56 opened on the side wall of the follower frame 55 and symmetrically slidably connected to the inner wall of the slides, are subjected to the elastic thrust of the pressing spring 59. The pressing spring 59 drives the two symmetrical guide blocks 57 to slide relative to each other in the follower slides 56, thereby driving the two traction rollers 58 rotatably connected between the two guide blocks 57 to move towards each other. The continuous tension of the pressing spring 59 is used to symmetrically clamp the cable in the middle of the two traction rollers 58.

[0034] When the traction motor 510, which is fixedly connected to the two bottom guide blocks 57, is started, the output shaft of the traction motor 510 rotates, directly driving the two traction rollers 58, which are fixedly connected to it, to rotate synchronously. Using the friction between the outer circumference of the traction rollers 58 and the cable sheath, the cable is actively pushed forward along the inclined axis direction set by the follower frame 55. The core functions of this mechanism are: First, it achieves automatic angle adaptive following. Utilizing the mechanical linkage between the rotating joint of the side traction column 51 and the movable long rod 52, the middle following frame 55 can automatically align with the inclined surface of the cable according to any slope adjusted by the front and rear adjustment mechanisms 3, completely avoiding the problem of rigid jamming or strain between the fixed traction machine and the cable when the slope changes. Second, it achieves active relay traction of the middle suspended section. The traction motor 510 drives the traction roller 58 directly under the cable where gravity is most likely to occur. The intermediate turning section of the sag and tension concentration bend applies a coaxial thrust, which shares the tension load of the main traction machine and effectively prevents the cable from being excessively bent or its outer sheath from being damaged at the slope corner. Third, it introduces an elastic floating clamping mechanism. With the cooperation of the pressing spring 59 and the guide block 57, the two traction rollers 58 can not only apply a stable driving friction force to the cable, but also dynamically and adaptively avoid uneven cable thickness or joints by following the sliding groove 56, ensuring the efficiency and safety of continuous traction operation.

[0035] A ball joint 54 is provided on the movable long rod 52, and the ball joint 54 is fixedly connected to both ends of the movable long rod 52. A ball bearing 513 is rotatably connected to the inner wall of the side traction column 51, and the ball bearing 513 is arranged in a circumferential array on the inner wall of the side traction column 51. A linkage control line 511 is connected between the two traction motors 510. A telescopic control line 512 is fixedly connected to the bottom of the linkage control line 511. One end of the telescopic control line 512 is fixedly connected to the linkage control line 511, and the other end of the telescopic control line 512 is connected to the machine body 2. The two traction motors 510 rotate simultaneously at the same speed, and apply a balanced traction thrust to the cable through the two traction rollers 58.

[0036] The linkage control line 511 connects the two traction motors 510 in series laterally, ensuring absolute synchronization of control signals and power supply, and preventing the cable from twisting or jamming within the follower frame 55 due to stalling of one motor. Since the entire follower frame 55 and traction motors 510 are suspended and dynamically move up and down or tilt according to the cable height and slope, while the main control box is usually fixed to the stationary body 2, if ordinary rigid cables are used, the control line will be pulled apart or detached when the follower frame 55 moves. A telescopic control line 512 is introduced, with one end connected to the movable linkage line and the other end fixed to the stationary body 2. When the follower frame 55 undergoes a large spatial displacement upward or downward due to changes in the cable terrain, the telescopic control line 512 utilizes its own elastic stroke extension redundancy to automatically stretch to become longer or retract to become shorter. Throughout the entire dynamic follow-up process, it maintains appropriate tension, preventing it from drooping downward and getting caught in the mechanical gap, or from being excessively stretched and breaking. This ensures, from an electrical system perspective, that the device can operate continuously and safely at harsh coal conveying electrical construction sites.

[0037] In summary, this traction device for laying electrical cables during coal conveying in thermal power plants involves manually adjusting the adjustment mechanisms 3 at both ends of the machine body 2 to lock the support sliders 32 into positioning holes 33 at different heights, creating a height difference between the positioning concave rollers 37 at both ends to adapt to the slope. The cable passes between the positioning concave rollers 37 and the movable concave rollers 38, and is reliably clamped by the constant downward pressure provided by the pressing mechanism 4, achieving radial limiting and preventing derailment. Simultaneously, the rolling friction of the rollers adapts to slope changes, ascents, or descents.

[0038] The pressing mechanism 4 uses water in the liquid storage tank 41 to generate hydrostatic pressure through the hollow telescopic rod 44, thereby applying pressure to both ends of the movable column 36. When the cable jumps or its outer diameter changes, the system automatically adjusts the pressure through liquid connection and gravity, absorbing the impact and maintaining clamping, without the need for external power.

[0039] The follow-up traction mechanism 5 automatically tilts according to the height difference between the two ends: the side traction column 51 and the movable long rod 52 work together to keep the middle follow-up frame 55 parallel to the cable slope. The pressing spring 59 drives the traction roller 58 to clamp the cable, and the traction motor 510 synchronously drives the roller to rotate, applying active auxiliary thrust to the suspended section of the cable in the middle, sharing the main traction load and preventing excessive bending or damage. At the same time, the telescopic control line 512 ensures that the electrical connection is reliable and will not be broken.

[0040] The device achieves slope-adaptive guidance through height difference, provides dynamic and stable clamping through pressing mechanism, and realizes active relay pushing in the middle through follow-up traction mechanism. The three work together to efficiently and safely complete cable laying and traction operations in the complex terrain of coal conveying construction in thermal power plants, significantly reducing cable sheath wear and construction difficulty.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A traction device for laying electrical cables during coal conveying construction in a thermal power plant, characterized in that: include: Mounting base (1), on top of which an organism (2) is mounted; Adjustment mechanism (3), the adjustment mechanism (3) is set on the body (2), the adjustment mechanism (3) is used to adjust the clamping height of the cable, the adjustment mechanism (3) includes a support frame (31), the support frame (31) is fixedly connected to the top of the body (2), two support sliders (32) are symmetrically slidably connected on the support frame (31), a positioning screw (34) is provided through the support slider (32), a positioning column (35) is fixedly connected between the two support sliders (32), a movable column (36) is slidably connected on the two support sliders (32), a positioning concave roller (37) is rotatably connected in the middle of the positioning column (35), and a movable concave roller (38) is rotatably connected in the middle of the movable column (36). There are two adjustment mechanisms (3) symmetrically arranged at the beginning and end of the body (2). The pressing mechanism (4) is disposed on the adjusting mechanism (3) and is used to apply uniform pressure to the two movable columns (36); Follow-up traction mechanism (5), which is mounted on adjustment mechanism (3) and is used to apply adjustable traction force to the cable section between the two adjustment mechanisms (3).

2. The cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 1, characterized in that: The positioning screw (34) is threaded to the inner wall of the support slider (32). The side wall array of the support frame (31) is provided with a number of positioning holes (33). The positioning concave roller (37) and the movable concave roller (38) are both provided with annular arc grooves. The body (2) and the mounting base (1) are connected by bolts. The mounting base (1) is provided with mounting holes for fixing the mounting base (1) to the plane.

3. The cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 1, characterized in that: The pressing mechanism (4) includes a liquid storage chamber (41), which is fixedly connected to the top of the support frame (31). A sealing cover (42) is provided on the top of the liquid storage chamber (41) to close the top opening of the liquid storage chamber (41). A hollow telescopic rod (44) is provided at the bottom of the liquid storage chamber (41). Four hollow telescopic rods (44) are provided. One end of the four hollow telescopic rods (44) is fixedly connected to the bottom of the liquid storage chamber (41), and the other end of the four hollow telescopic rods (44) is fixedly connected to the top of the movable column (36). Both ends of the movable column (36) are fixed to the hollow telescopic rods (44). The hollow telescopic rods (44) are connected to the inner cavity of the liquid storage chamber (41).

4. The cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 3, characterized in that: Both of the support frames (31) are located at the bottom of the support frame (31), and the two support frames (31) are symmetrically arranged at both ends of the bottom of the liquid storage tank (41).

5. A cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 3, characterized in that: The outer wall of the liquid storage tank (41) is provided with a scale (43), and the liquid storage tank (41) is made of transparent visible material.

6. The cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 1, characterized in that: The follow-up traction mechanism (5) includes a side traction column (51), which is rotatably connected to the side wall of the support slider (32). A movable long rod (52) is provided on the inner wall of the side traction column (51). The two ends of the movable long rod (52) are respectively inserted into the two side traction columns (51). A middle traction column (53) is fixedly connected to the middle part of the movable long rod (52). A follow-up frame (55) is fixedly connected between the two middle traction columns (53). A follow-up groove (56) is opened on the side wall of the follow-up frame (55).

7. A cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 6, characterized in that: Two follower slides (56) are provided. Guide blocks (57) are slidably connected to the inner wall of the follower slides (56). Four guide blocks (57) are provided. The four guide blocks (57) are symmetrically arranged in pairs on the inner walls of the two follower slides (56). Traction rollers (58) are rotatably connected between the two guide blocks (57). Two traction rollers (58) are provided. The two traction rollers (58) are symmetrically arranged. A pressing spring (59) is connected between the guide block (57) and the inner wall of the follower slide (56). One end of the pressing spring (59) is fixedly connected to the inner wall of the follower slide (56). The other end of the pressing spring (59) is fixedly connected to the guide block (57). Traction motors (510) are fixedly connected to the two bottom guide blocks (57). The output shafts of the two traction motors (510) are fixedly connected to the two traction rollers (58).

8. A cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 7, characterized in that: A ball head block (54) is provided on the movable long rod (52), and the ball head block (54) is fixedly connected to both ends of the movable long rod (52). A ball bearing (513) is rotatably connected to the inner wall of the side traction column (51), and the ball bearing (513) is arranged in a circumferential array on the inner wall of the side traction column (51).

9. A cable laying traction device for electrical construction in coal conveying at a thermal power plant according to claim 7, characterized in that: A linkage control line (511) is connected between the two traction motors (510). A telescopic control line (512) is fixedly connected to the bottom of the linkage control line (511). One end of the telescopic control line (512) is fixedly connected to the linkage control line (511), and the other end of the telescopic control line (512) is connected to the machine body (2).

10. A traction device for laying electrical cables during coal conveying construction in a thermal power plant according to claim 1, characterized in that: A handwheel is fixedly connected to the top of the positioning screw (34), and the outer periphery of the handwheel is wrapped with a rubber anti-slip sleeve (310). The diameter of the handwheel is larger than the outer thread diameter of the positioning screw (34).

Images