Cable guiding and threading equipment for electrical construction

Abstract

The invention discloses a cable guiding and threading device for electrical construction, and relates to the technical field of cable installation, the cable guiding and threading device comprises an outer moving mechanism, a cable clamping mechanism and a cable conveying mechanism, the outer moving mechanism comprises a semicircular support, a moving wheel, a first limiting wheel and a first magnet, the moving wheel is installed on the inner upper portion of the semicircular support and can rotate automatically, and the first limiting wheel is installed on the semicircular support; first limiting wheels are installed on the two sides of the interior of the semicircular support, the positions of the moving wheels and the positions of the first limiting wheels can be adjusted, and the first magnets are installed on one sides of the moving wheels; the cable clamping mechanism is of a circular radial expansion structure, a second magnet and a plurality of second limiting wheels are installed outside the cable clamping mechanism, and the second limiting wheels are distributed on the periphery of the second magnet. The outer moving mechanism, the cable clamping mechanism and the cable conveying mechanism are matched to achieve automatic and stable threading of the cable into the pipeline, the threading progress can be observed conveniently, and the cable threading device is suitable for being used for cables and pipelines with different diameter values.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation, and in particular to a cable guiding and threading device for electrical construction. Background Art

[0002] The laying of cables is particularly important in electrical-related construction. In a specific environment, some cables need to be laid in pipelines, that is, the cables need to be inserted into pipelines for use. There are many existing ways of threading cables through pipelines. The commonly used method is to use a wire reel and a cable conveying mechanism to thread the cables through the pipeline. The wire reel releases the cables, and the cable conveying mechanism is arranged at the input end of the pipeline to push the cables to gradually move into the pipeline to complete the threading. This threading method is mainly suitable for thick cables and cables with a certain hardness. For flexible cables, this method is difficult to achieve the movement of the cables in the pipeline along the pipeline trajectory. There is also an existing guiding threading mechanism, which is placed inside the pipeline to clamp and pull the cables to move toward the output end of the pipeline. However, the clamping structure of the existing guiding threading mechanism mainly adopts conventional disc clamping, telescopic rod clamping and other structures. The width of the clamping structure is much larger than the cable diameter value, and it is adapted to the moving part of the guiding threading mechanism, resulting in a large volume of the guiding threading mechanism and a width much wider than the cable diameter value. It cannot be used for pipelines with a small difference in inner diameter between the cable and the pipeline, or for pipelines with a small inner diameter value, and there are limitations in use.

[0003] Therefore, it is necessary to invent a cable guiding and threading device for electrical construction to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a cable guiding and threading device for electrical construction to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a cable guiding and threading device for electrical construction, comprising: The outer moving mechanism comprises a semicircular bracket, a moving wheel, a first limiting wheel and a first magnet. The axis of the semicircular bracket is taken as a horizontal line. The moving wheel is installed on the inner upper part of the semicircular bracket and can rotate by itself. The first limiting wheels are installed on both sides of the inner part of the semicircular bracket. The positions of the moving wheel and the first limiting wheel are adjustable. The first magnet is installed on one side of the moving wheel. The cable clamping mechanism is a circular radial expansion structure, and the shape after expansion can be fixed, and a second magnet and a second limiting wheel are installed on the outside, and the second limiting wheels are provided in plurality and distributed around the periphery of the second magnet; The cable conveying mechanism includes a first circular conveyor belt, a second circular conveyor belt, a lower limit rotating roller and an upper limit rotating roller. The conveying surfaces of the first circular conveyor belt and the second circular conveyor belt are relative and the distance between them is adjustable. The axes of the upper limit rotating roller and the lower limit rotating roller are horizontally arranged and arranged up and down. The distance between them is adjustable and they are installed on the input end side of the first circular conveyor belt and the second circular conveyor belt.

[0006] Optionally, the movable wheel and the first limiting wheel are each correspondingly equipped with a first adjusting screw, the first adjusting screw thread is installed on the semicircular bracket, one end of the first adjusting screw located on the inner side of the semicircular bracket is rotatably connected to the corresponding movable wheel or the first limiting wheel through a bearing seat, and the movable wheel and the first limiting wheel are both fixedly connected with two first limiting rods parallel to the axis of the first adjusting screw connected thereto, and the first limiting rod is fitly plugged into the semicircular bracket.

[0007] Optionally, a spring damping shock absorber is fixedly connected between the movable wheel and the first limiting wheel and the bearing seat connected thereto.

[0008] Optionally, a proximity sensor is fixedly mounted on the bottom of the first magnet, a main control unit is mounted on the outer side of the semicircular bracket, and both the proximity sensor and the moving wheel are connected to the main control unit for information transmission.

[0009] Optionally, the cable clamping mechanism includes a driving mechanism, a first curved plate, a second magnet and a second limiting wheel, the driving mechanism includes an expansion mechanism and a gear set, the expansion mechanism includes a center disk, a linear guide, a sliding rod and a second limiting rod, a plurality of linear guides extend outward from the outer side of the edge of the center disk, and the plurality of linear guides are arranged in a circular array with the axis of the center disk as the center, and sliding rods are slidably installed inside the plurality of linear guides, and one end of the sliding rod away from the center disk passes through the linear guide to the outside thereof, and the outer end of the sliding rod is fixedly connected to the first curved plate, and the plurality of the first curved plates form a circular cylindrical structure, and one end of the sliding rod away from the first curved plate is fixedly connected to the second limiting rod, and the gear set includes a driving gear and a driven gear, The driving gear and the driven gear are meshingly connected, the driven gear is coaxially rotatably installed on one side of the center disk, the driving gear is rotatably installed on a linear guide rail, and a second motor is fixedly installed on the linear guide rail, the output end of the second motor is coaxially connected to the driving gear, the second motor adopts a self-locking motor, the driven gear is provided with a plurality of guide grooves arranged in a circular array with the axis of the driven gear as the center along the thickness direction thereof, the number of the guide grooves is consistent with the number of the second limiting rods, a plurality of the second limiting rods correspond to the plurality of guide grooves one by one and are fitted and plugged, the guide groove is an arc-shaped groove structure extending from the middle of the driven gear to the edge of the driven gear, and the second magnet and the second limiting wheel are installed on the outside of a first arc plate.

[0010] Optionally, the center disk is provided with a plurality of arc grooves along its thickness direction, and the plurality of arc grooves form a circular structure. The driven gear is provided with a plurality of through holes corresponding to the arc grooves along its thickness direction, and the plurality of through holes are adapted to be equipped with first fastening bolts.

[0011] Optionally, it also includes a second arc plate and a connecting rod, the second arc plate has the same structure as the first arc plate, and the number of the second arc plates is the same as the number of the first arc plates, the second arc plate is located at any point of the first arc plate along its axial direction, the first arc plate and the second arc plate are fixed by a connecting rod, and a number of the second arc plates and a number of the first arc plates form a circular cylindrical structure.

[0012] Optionally, it also includes a bracket, a slide rail is fixedly installed on the upper part of the bracket, the slide rail includes a guide rail part and a sliding part, the guide rail part of the slide rail is guided parallel to the spacing direction between the first circular conveyor belt and the second circular conveyor belt, the second circular conveyor belt is fixedly installed on the sliding part of the slide rail, and a second adjusting screw is threadedly installed on the bracket, the axis of the second adjusting screw is guided parallel to the guide rail part of the slide rail, and one end of the second adjusting screw is rotatably connected to the second circular conveyor belt through a bearing.

[0013] Optionally, the lower limit rotating rod is rotatably mounted on the bracket and its position is fixed, bearings are arranged at both ends of the upper limit rotating rod, and adjustment grooves are provided in the vertical direction at two places where the bearings at both ends of the upper limit rotating rod are mounted on the bracket, and the bearings at both ends of the upper limit rotating rod are slidably mounted in the adjustment grooves, and second fastening bolts matching the adjustment grooves are inserted on the bearings at both ends of the upper limit rotating rod.

[0014] Technical effects and advantages of the present invention: The present invention provides an external moving mechanism, a cable clamping mechanism and a cable conveying mechanism. The cable clamping mechanism is a circular radially expanding clamping structure, which is suitable for clamping cables of different diameters. The circular expansion structure has a small difference in width with the diameter of the clamped cable, and is particularly suitable for use in pipes with a small difference in the inner diameter of the cable and the required threading pipe, thereby reducing limitations on use. The cable clamping mechanism is pulled and moved by the external moving mechanism outside the pipe, so that the progress of cable threading is clearly understood, and it is avoided to provide a driving structure for driving the cable clamping mechanism to move on the cable clamping mechanism, thereby further reducing the footprint of the cable clamping mechanism. The cable conveying mechanism is placed at the input end of the pipe, and is used to push the cable to move into the pipe, reducing the pulling force of the cable clamping mechanism to pull the cable, thereby avoiding the cable clamping mechanism from being derailed and improving the stability of the cable guiding and threading. The external moving mechanism, the cable clamping mechanism and the cable conveying mechanism are adapted to realize the automatic and stable threading of the cable into the pipe, and it is convenient to observe the threading progress and adapt to the use of cables and pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall vertical structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the vertical structure of the external moving mechanism of the present invention.

[0017] Figure 3 It is a schematic diagram of the front view structure of the outer moving mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the overall side view structure of the moving wheel of the present invention.

[0019] Figure 5 It is a schematic diagram of the vertical structure of the cable clamping mechanism of the present invention.

[0020] Figure 6 It is a schematic diagram of the split vertical structure of the cable clamping mechanism of the present invention.

[0021] Figure 7 This is a schematic diagram of the vertical structure of the first curved plate installation of the present invention.

[0022] Figure 8 It is a schematic diagram of the vertical structure of the gear set of the present invention.

[0023] Fig. 9 It is a schematic diagram of the vertical structure of the second embodiment of the cable clamping mechanism of the present invention.

[0024] Fig.10 It is a schematic diagram of the vertical structure of the cable conveying mechanism of the present invention.

[0025] In the figure: 1, external moving mechanism; 101, semicircular bracket; 102, moving wheel; 103, first limiting wheel; 104, first magnet; 2, cable clamping mechanism; 201, driving mechanism; 202, first arc plate; 203, second magnet; 204, second limiting wheel; 3, cable conveying mechanism; 301, first annular conveyor belt; 302, second annular conveyor belt; 303, lower limiting rotating rod; 304, upper limiting rotating rod; 4, first adjusting screw; 5, bearing seat; 6, knob; 7, first limiting rod; 8, spring damping shock absorber ; 9. first motor; 10. proximity sensor; 11. expansion mechanism; 12. gear set; 13. center disk; 14. linear guide; 15. slide rod; 16. second limit rod; 17. arc groove; 18. second motor; 19. driving gear; 20. driven gear; 21. guide groove; 22. through hole; 23. first fastening bolt; 24. second arc plate; 25. connecting rod; 26. cable tie; 27. bracket; 28. slide rail; 29. ​​second adjusting screw; 30. adjusting groove; 31. second fastening bolt; 32. main control unit. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The present invention provides Figure 1-10 The cable guiding and threading device for electrical construction shown is used for threading and laying cables in pipelines, and comprises an external moving mechanism 1, a cable clamping mechanism 2 and a cable conveying mechanism 3.

[0031] like Figure 2-4As shown: the outer moving mechanism 1 includes a semicircular bracket 101, a moving wheel 102, a first limiting wheel 103 and a first magnet 104. The axis of the semicircular bracket 101 is taken as a horizontal line. The moving wheel 102 is installed on the inner upper part of the semicircular bracket 101. The first limiting wheels 103 are installed on both sides of the interior of the semicircular bracket 101. The moving wheel 102 and the first limiting wheel 103 both include a mounting frame and a rotating wheel. The rotating wheel is rotatably mounted on the mounting frame. A first motor 9 is fixedly mounted on the mounting frame of the moving wheel 102. The output end of the first motor 9 is coaxially connected to the rotating wheel of the moving wheel 102 for driving the rotating wheel of the moving wheel 102 to rotate. A magnet 104 is fixedly mounted on the mounting frame of the moving wheel 102, the outer moving mechanism 1 is placed on the upper part of the pipeline, the rotating wheel of the moving wheel 102 is in contact with the upper part of the pipeline, a gap is left between the first magnet 104 and the pipeline, the first limiting wheels 103 on both sides of the outer moving mechanism 1 are in contact with both sides of the pipeline, the moving wheel 102 is driven by the first motor 9 to realize the electric self-movement of the outer moving mechanism 1, the first limiting wheels 103 are used to limit the position of the outer moving mechanism 1 to prevent the outer moving mechanism 1 from rotating on the circumference of the pipeline, improve the stability of the movement of the outer moving mechanism 1, and under the limit, ensure that the first magnet 104 is always located at the upper part of the pipeline; The moving wheels 102 and the first limiting wheels 103 on both sides of the semicircular bracket 101 are arranged in at least two groups in the axial direction of the semicircular bracket 101 to improve the stability of its movement; The mounting frame of the first limiting wheel 103 is provided with two rotating wheels, and the two rotating wheels are fitted with the pipeline for limiting, which further improves the limiting and guiding ability of the first limiting wheel 103 and improves the stability of the movement of the outer moving mechanism 1; The moving wheel 102 and the first limiting wheel 103 are both correspondingly installed with a first adjusting screw 4, and the first adjusting screw 4 is threadedly installed on the semicircular bracket 101. One end of the first adjusting screw 4 located on the inner side of the semicircular bracket 101 is rotatably connected to the corresponding moving wheel 102 or the mounting frame of the first limiting wheel 103 through a bearing seat 5. The other end of the first adjusting screw 4 is fixedly connected with a knob 6 for manually screwing the first adjusting screw 4, thereby adjusting the position of the moving wheel 102 or the first limiting wheel 103. The moving wheel 102 and the first limiting wheel 103 Two first limiting rods 7 are fixedly connected to the mounting frame, and the axes of the two first limiting rods 7 on the moving wheel 102 and the first limiting wheel 103 are parallel to the axes of the first adjusting screws 4 connected thereto, and the two first limiting rods 7 are fitted and plugged with the semicircular bracket 101. Under the limitation of the first limiting rods 7, the moving wheel 102 or the first limiting wheel 103 does not rotate when the position is adjusted, and always moves along the axis direction of the semicircular bracket 101. Under the adjustment of the first adjusting screws 4, the external moving mechanism 1 is adapted to be used for pipes of different diameters; A spring damping shock absorber 8 is fixedly connected between the mounting frames of the moving wheel 102 and the first limiting wheel 103 and their corresponding bearing seats 5. The spring damping shock absorber 8 adopts the existing vehicle shock absorber, including a damping telescopic rod and a spring. The spring is sleeved on the outside of the damping telescopic rod, and the two ends of the spring are respectively fixed to the two ends of the damping telescopic rod, and the two ends of the damping telescopic rod are respectively fixedly connected to the bearing seat 5 and the mounting frame, and the damping telescopic rod is rotatably connected to the first adjusting screw 4 through the bearing seat 5, so that the installation of the moving wheel 102 and the first limiting wheel 103 has an elastic telescopic function, ensuring that the moving wheel 102 and the first limiting wheel 103 are both in contact with the pipeline and move, and ensuring that the pipeline can pass normally when there is dirt and other debris on the outer wall.

[0032] like Figure 5-8 As shown: the cable clamping mechanism 2 includes a driving mechanism 201, a first arc-shaped plate 202, a second magnet 203 and a second limiting wheel 204; The driving mechanism 201 includes an expansion mechanism 11 and a gear set 12. The expansion mechanism 11 includes a center disk 13, a linear guide 14, a sliding rod 15 and a second limit rod 16. A plurality of linear guides 14 extend outward from the outer edge of the center disk 13. The plurality of linear guides 14 are arranged in a circular array with the axis of the center disk 13 as the center. The plurality of linear guides 14 are slidably installed with sliding rods 15 inside. One end of the sliding rod 15 away from the center disk 13 passes through the linear guide 14 to the outside thereof, and the outer ends of the plurality of sliding rods 15 are fixedly connected to a first arc plate 202. The plurality of first arc plates 202 form a circular cylindrical structure. One end of the plurality of sliding rods 15 away from the first arc plate 202 is fixedly connected to the second limit rod 16. The gear set 12 includes a driving gear 19 and a driven gear 20. The driven gear 19 is meshed and connected with the driven gear 20. The driven gear 20 is coaxially rotatably installed on one side of the center disk 13. The driving gear 19 is rotatably installed on a linear guide rail 14, and a second motor 18 is fixedly installed on the linear guide rail 14. The second motor 18 adopts a self-locking motor, and its output end has a self-locking function. The output end of the second motor 18 is coaxially connected with the driving gear 19. The driven gear 20 is provided with a plurality of guide grooves 21 arranged in a circular array with the axis of the driven gear 20 as the center along its thickness direction. The number of the guide grooves 21 is consistent with the number of the second limiting rods 16, and the plurality of second limiting rods 16 correspond to the plurality of guide grooves 21 one by one and are fitted and plugged. The guide groove 21 is an arc-shaped groove structure extending from the middle of the driven gear 20 to the edge of the driven gear 20; The working principle of the driving mechanism 201 is as follows: the second motor 18 drives the driving gear 19 to rotate and drives the driven gear 20 meshing therewith to rotate, and the driven gear 20 rotates to change the position of the second limiting rod 16 in the guide groove 21. Since the distance between the second limiting rod 16 and the center of the driven gear 20 changes, and under the limitation of the guide groove 21 and the linear guide rail 14, the slide bar 15 moves in the linear guide rail 14, thereby changing the position of the first curved plate 202. The positions of the multiple first curved plates 202 change synchronously, and the inner diameter value of the circular cylindrical structure formed by the multiple first curved plates 202 changes. The driving mechanism 201 controls the multiple first arc plates 202 to fit tightly with the outside of the cable to achieve the clamping of the cable, and is suitable for the clamping of cables of different diameters. The clamping structure is a circular expansion structure, which is not only suitable for use in pipes of different diameters, but also after the first arc plates 202 are fitted with the cable, the width of the clamping structure is greater than the cable diameter and is only the thickness of two first arc plates 202, which occupies a small area. After the cable is tightly clamped, the cable is deformed, and the difference between the width of the clamping structure and the cable diameter can be ignored, which is also suitable for use in pipes with a small difference between the cable and the inner diameter of the required threading pipe. The center disk 13 is provided with a plurality of arc grooves 17 along its thickness direction, and the plurality of arc grooves 17 form a circular structure. The driven gear 20 is provided with a plurality of through holes 22 corresponding to the arc grooves 17 along its thickness direction, and the plurality of through holes 22 are adapted to be equipped with first fastening bolts 23, which are used to pass through the through holes 22 and the arc grooves 17 to realize locking of the driven gear 20 and the center disk 13, thereby ensuring the stability of the position of the first arc plate 202, and thereby improving the stability of cable clamping; The second magnet 203 is fixedly mounted on the outer wall of a first arc-shaped plate 202, and is used to attract the first magnet 104 in the outer moving mechanism 1. The second limiting wheel 204 is provided in plurality, which is arranged on the periphery of the second magnet 203 and is fixedly mounted on the first arc-shaped plate 202. When the cable clamping mechanism 2 is placed inside the pipe, the second limiting wheel 204 is used to contact the upper part of the inner wall of the pipe, and a gap is left between the second magnet 203 and the inner wall of the pipe. The outer moving mechanism 1 moves by itself, and drives the cable clamping mechanism 2 to move under the magnetic attraction between the first magnet 104 and the second magnet 203. The outer moving mechanism 1 is placed outside the pipe as a traction device for guiding the cable threading, so as to clearly understand the progress of the cable threading, and avoids setting a driving structure for driving the cable clamping mechanism 2 to move on the cable clamping mechanism 2, thereby reducing the footprint of the cable clamping mechanism 2, and thereby reducing the limitation that it cannot be used in pipes with small diameters. like Figure 2 and 4As shown: a proximity sensor 10 is fixedly installed at the bottom of the first magnet 104, and the proximity sensor 10 includes but is not limited to a Hall effect sensor. After the outer moving mechanism 1 is installed, the proximity sensor 10 does not contact the pipe. After the outer moving mechanism 1 and the cable clamping mechanism 2 are magnetically adapted, the proximity sensor 10 is located between the first magnet 104 and the second magnet 203, and is used to detect the magnetism between the first magnet 104 and the second magnet 203, and then identify whether the outer moving mechanism 1 and the cable clamping mechanism 2 are out of adaptation; a main control unit 32 is installed on the outer side of the semicircular bracket 101 The main control unit 32 includes but is not limited to a PLC control system. The proximity sensor 10 and the first motor 9 are connected to the main control unit 32 for information transmission. The main control unit 32 is set to determine that the external moving mechanism 1 and the cable clamping mechanism 2 are disengaged when the proximity sensor 10 detects that the magnetism is reduced. The external moving mechanism 1 stops moving and reverses until the proximity sensor 10 detects that the magnetism returns to a normal value. The external moving mechanism 1 continues to move in the pipeline output direction, thereby realizing automatic monitoring and correction of the traction movement of the external moving mechanism 1, reducing the amount of human participation, and avoiding cable traction derailment.

[0033] like Fig. 9 As shown: the cable clamping mechanism 2 also provides a second embodiment: it also includes a second arc plate 24 and a connecting rod 25, the second arc plate 24 is consistent with the first arc plate 202 in structure, and the number of the second arc plates 24 is consistent with the number of the first arc plates 202, the second arc plate 24 is located at any position of the first arc plate 202 along its axial direction, the first arc plate 202 and the second arc plate 24 are fixed by the connecting rod 25, and a plurality of second arc plates 24 and a plurality of first arc plates 202 form a circular cylindrical structure, and the second arc plate 24 is provided to increase the clamping length of the cable by the cable clamping mechanism 2, thereby improving the stability of the cable clamping; It also includes a plurality of cable ties 26 , which are disposable structures and are used to bind the outside of several second arc-shaped plates 24 to improve the stability and clamping strength of the second arc-shaped plates 24 .

[0034] like Fig.10 As shown: the cable conveying mechanism 3 includes a first annular conveyor belt 301, a second annular conveyor belt 302, a lower limit rotating rod 303, an upper limit rotating rod 304 and a bracket 27; The first circular conveyor belt 301 and the second circular conveyor belt 302 are both placed on the upper part of the bracket 27, and the conveying directions of the two are arranged in parallel, the conveying surfaces are opposite and the conveying directions are consistent, the cable is placed between the first circular conveyor belt 301 and the second circular conveyor belt 302, and is used to fit and clamp the conveying cable, the first circular conveyor belt 301 is fixedly installed on the bracket 27, and the upper part of the bracket 27 is fixedly installed with a slide rail 28, the slide rail 28 includes a guide rail part and a sliding part, the guide rail part of the slide rail 28 is guided in parallel with the spacing direction between the first circular conveyor belt 301 and the second circular conveyor belt 302, and the second circular conveyor belt 301 is fixedly installed on the upper part of the bracket 27. The conveyor belt 302 is fixedly mounted on the sliding part of the slide rail 28, and the spacing between the first circular conveyor belt 301 and the second circular conveyor belt 302 can be slidably adjusted. The bracket 27 is threadedly connected with a second adjusting screw 29, and the axis of the second adjusting screw 29 is parallel to the guide rail part of the slide rail 28. One end of the second adjusting screw 29 is rotatably connected to the second circular conveyor belt 302 through a bearing. The second adjusting screw 29 is screwed to push the second circular conveyor belt 302 to move to adjust the spacing between the first circular conveyor belt 301 and the second circular conveyor belt 302, which is suitable for the transportation of cables with different diameters. The lower limit rotating rod 303 and the upper limit rotating rod 304 are arranged on one side of the input end of the first circular conveyor belt 301 and the second circular conveyor belt 302, and are used for limiting the cable to enter between the first circular conveyor belt 301 and the second circular conveyor belt 302. The axes of the lower limit rotating rod 303 and the upper limit rotating rod 304 are arranged horizontally and the axes are parallel to the guide rail part of the slide rail 28. The upper limit rotating rod 304 and the lower limit rotating rod 303 are distributed up and down. The lower limit rotating rod 303 is rotatably installed on the bracket 27 and the position is fixed. Bearings are arranged at both ends of the upper limit rotating rod 304, and the bracket 27 is provided with a plurality of bearings. The two places where the bearings at both ends of the upper limit rotating rod 304 are installed on the frame 27 are provided with adjustment grooves 30 in the vertical direction. The bearings at both ends of the upper limit rotating rod 304 are slidably installed in the adjustment grooves 30, and the bearings at both ends of the upper limit rotating rod 304 are inserted with second fastening bolts 31 adapted to the adjustment grooves 30, which are used to pass through the adjustment grooves 30 to lock the bearings at both ends of the upper limit rotating rod 304. The position of the upper limit rotating rod 304 is adjustable in the vertical direction, which is suitable for cables of different diameters to pass between the lower limit rotating rod 303 and the upper limit rotating rod 304 to realize cable limit guiding.

[0035] The external moving mechanism 1 is installed on the outside of the pipeline and has the function of self-moving along the pipeline. The cable clamping mechanism 2 is used to clamp the cable, is placed inside the pipeline and is pulled and moved by the external moving mechanism 1, so as to realize the traction of the cable to move in the pipeline and thus realize the automatic guidance and threading of the cable. The cable conveying mechanism 3 is placed at the input end of the pipeline, so as to push the cable to move into the pipeline, reduce the pulling force of the cable clamping mechanism 2 to pull the cable, thereby avoiding the cable clamping mechanism 2 from derailing and improving the stability of the cable guiding and threading. The external moving mechanism 1, the cable clamping mechanism 2 and the cable conveying mechanism 3 are adapted to realize the automatic and stable threading of the cable into the pipeline, and are convenient for observing the threading progress and are suitable for the use of cables and pipelines with different diameters.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable guiding and threading device for electrical construction, characterized in that: include: The outer moving mechanism (1) comprises a semicircular bracket (101), a moving wheel (102), a first limiting wheel (103) and a first magnet (104); the axis of the semicircular bracket (101) is taken as a horizontal line; the moving wheel (102) is mounted on the inner upper part of the semicircular bracket (101) and can rotate automatically; the first limiting wheels (103) are mounted on both sides of the interior of the semicircular bracket (101); the positions of the moving wheel (102) and the first limiting wheel (103) are adjustable; and the first magnet (104) is mounted on one side of the moving wheel (102); The cable clamping mechanism (2) is a circular radial expansion structure, and the shape after expansion can be fixed, and a second magnet (203) and a second limiting wheel (204) are installed on the outside, and the second limiting wheels (204) are arranged in plurality and distributed around the periphery of the second magnet (203); The cable conveying mechanism (3) comprises a first circular conveyor belt (301), a second circular conveyor belt (302), a lower limit rotating roller (303) and an upper limit rotating roller (304); the conveying surfaces of the first circular conveyor belt (301) and the second circular conveyor belt (302) are opposite and the distance between them is adjustable; the upper limit rotating roller (304) and the lower limit rotating roller (303) have axes arranged horizontally and arranged up and down, and the distance between them is adjustable, and are installed on the input end side of the first circular conveyor belt (301) and the second circular conveyor belt (302).

2. The cable guiding and threading device for electrical construction according to claim 1, characterized in that: The movable wheel (102) and the first limiting wheel (103) are both correspondingly mounted with a first adjusting screw (4), the first adjusting screw (4) being threadedly mounted on the semicircular bracket (101), one end of the first adjusting screw (4) located on the inner side of the semicircular bracket (101) being rotatably connected to the corresponding movable wheel (102) or the first limiting wheel (103) via a bearing seat (5), the movable wheel (102) and the first limiting wheel (103) are both fixedly connected with two first limiting rods (7) parallel to the axes of the first adjusting screws (4) connected thereto, the first limiting rods (7) being fitted and plugged into the semicircular bracket (101).

3. The cable guiding and threading device for electrical construction according to claim 2, characterized in that: A spring damping shock absorber (8) is fixedly connected between the moving wheel (102) and the first limiting wheel (103) and the bearing seat (5) connected thereto.

4. The cable guiding and threading device for electrical construction according to claim 1, characterized in that: A proximity sensor (10) is fixedly mounted on the bottom of the first magnet (104), a main control unit (32) is mounted on the outside of the semicircular bracket (101), and both the proximity sensor (10) and the moving wheel (102) are connected to the main control unit (32) for information transmission.

5. The cable guiding and threading device for electrical construction according to claim 1, characterized in that: The cable clamping mechanism (2) comprises a driving mechanism (201), a first arc-shaped plate (202), a second magnet (203) and a second limiting wheel (204); the driving mechanism (201) comprises an expansion mechanism (11) and a gear set (12); the expansion mechanism (11) comprises a center disk (13), a linear guide rail (14), a sliding rod (15) and a second limiting rod (16); a plurality of linear guide rails (14) extend outwardly from the outer side of the edge of the center disk (13); the plurality of linear guide rails (14) extend around the center disk (13) The linear guide rails (14) are arranged in a circular array with the axis of the center as the center, and a sliding rod (15) is slidably installed inside each of the plurality of linear guide rails (14). One end of the sliding rod (15) away from the center disk (13) passes through the linear guide rail (14) to the outside thereof. The outer end of the sliding rod (15) is fixedly connected to a first arc plate (202). The plurality of first arc plates (202) form a circular cylindrical structure. One end of the sliding rod (15) away from the first arc plate (202) is fixedly connected to a second limit rod (16). The gear set (12) includes a driving gear (19) and a driven gear (20), the driving gear (19) and the driven gear (20) are meshingly connected, the driven gear (20) is coaxially mounted on one side of the center disk (13), the driving gear (19) is rotatably mounted on a linear guide rail (14), and a second motor (18) is fixedly mounted on the linear guide rail (14), the output end of the second motor (18) is coaxially connected to the driving gear (19), the second motor (18) is a self-locking motor, and the driven gear (20) is arranged along its thickness direction. A plurality of guide grooves (21) are provided through the driven gear (20) and are arranged in a circular array with the axis of the driven gear (20) as the center. The number of the guide grooves (21) is consistent with the number of the second limiting rods (16). The plurality of the second limiting rods (16) correspond to the plurality of guide grooves (21) one by one and are closely connected. The guide grooves (21) are arc-shaped groove structures extending from the middle of the driven gear (20) to the edge of the driven gear (20). The second magnet (203) and the second limiting wheel (204) are mounted on the outside of a first arc-shaped plate (202).

6. The cable guiding and threading device for electrical construction according to claim 5, characterized in that: The center disk (13) is provided with a plurality of arcuate grooves (17) extending through it along the thickness direction, the plurality of arcuate grooves (17) forming a circular structure, and the driven gear (20) is provided with a plurality of through holes (22) corresponding to the arcuate grooves (17) extending through it along the thickness direction, the plurality of through holes (22) being adapted to be equipped with first fastening bolts (23).

7. The cable guiding and threading device for electrical construction according to claim 5, characterized in that: The invention also comprises a second curved plate (24) and a connecting rod (25); the second curved plate (24) has the same structure as the first curved plate (202); the number of the second curved plates (24) is the same as the number of the first curved plates (202); the second curved plate (24) is located at any position of the first curved plate (202) that can be translated along its axial direction; the first curved plate (202) and the second curved plate (24) are fixed by the connecting rod (25); and a plurality of the second curved plates (24) and a plurality of the first curved plates (202) form a circular cylindrical structure in unison.

8. The cable guiding and threading device for electrical construction according to claim 1, characterized in that: It also includes a bracket (27), a slide rail (28) is fixedly mounted on the upper part of the bracket (27), the slide rail (28) includes a guide rail part and a sliding part, the guide rail part of the slide rail (28) is guided parallel to the spacing direction between the first circular conveyor belt (301) and the second circular conveyor belt (302), the second circular conveyor belt (302) is fixedly mounted on the sliding part of the slide rail (28), a second adjusting screw (29) is threadedly mounted on the bracket (27), the axis of the second adjusting screw (29) is guided parallel to the guide rail part of the slide rail (28), and one end of the second adjusting screw (29) is rotatably connected to the second circular conveyor belt (302) via a bearing.

9. The cable guiding and threading device for electrical construction according to claim 8, characterized in that: The lower limit rotating rod (303) is rotatably mounted on the bracket (27) and is fixed in position. Bearings are arranged at both ends of the upper limit rotating rod (304). Adjustment grooves (30) are provided in the vertical direction at two locations where the bearings at both ends of the upper limit rotating rod (304) are mounted on the bracket (27). The bearings at both ends of the upper limit rotating rod (304) are slidably mounted in the adjustment grooves (30). Second fastening bolts (31) adapted to the adjustment grooves (30) are inserted into the bearings at both ends of the upper limit rotating rod (304).

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