Power cable stranding device and stranding method thereof

Abstract

The invention discloses a power cable stranding device and a stranding method thereof, and belongs to the technical field of cable processing. The device comprises a base, a rotating disc, a driving mechanism, a detection polishing assembly and a tension adjusting mechanism. The rotating disc is connected with a first fixed disc and a second fixed disc through a lead screw, a reciprocating detection structure is arranged in the first fixed disc, a rotating shaft drives the disc to rotate through a magnetic coupler, a frame body is driven to reciprocate through an eccentric pin shaft, and the frame body is meshed with a gear ring on the outer wall of a rotating cylinder through a rack, so that circumferential detection of the rotating cylinder with a built-in high-definition camera is achieved. The second fixing disc is provided with a tension adjusting mechanism. A sliding rod is connected with a pressure sensor through a spring and is matched with a distance-adjustable guide roller to maintain constant tension of the cable. The device realizes real-time detection and polishing treatment of cable surface defects through mechanical transmission, ensures tension balance in the stranding process in combination with a tension feedback control system, is suitable for the field of power cable production and processing, and effectively improves cable stranding quality and surface smoothness.

Description

Technical Field

[0001] The present invention relates to the technical field of cable processing, and in particular to a power cable stranding device and a stranding method thereof. Background Art

[0002] A power cable is a device for transmitting electrical energy or signals, usually composed of several or several groups of wires stranded together. With the development of solar technology, its application scope has been further expanded. Power cables are widely used in urban underground power grids, outgoing lines of power stations, internal power supply systems of industrial and mining enterprises, and undersea power transmission projects across rivers and seas. During the cable production process, a stranding device is required to braid multiple groups of copper wires into a cable core.

[0003] For example, the utility model patent with the publication number of CN116825449B discloses an intelligent stranding device for power cable processing. However, the following deficiencies still exist in this technical solution during the cable stranding process:

[0004] 1. During the cable stranding process, the surface of the cable is prone to scratches or microcracks due to friction, which may cause the cable to break after stranding. However, the existing technical solutions are not equipped with a surface polishing function;

[0005] 2. It is difficult to ensure the tension balance of multiple cables to be stranded during the stranding process, which easily leads to the phenomenon of cable slack during subsequent stranding.

[0006] In view of the above problems, the present invention document proposes a power cable stranding device and a stranding method thereof. Summary of the Invention

[0007] The purpose of the present invention is to solve the disadvantages of the existing technology that cannot polish the scratches or cracks on the cable surface and cannot ensure the tension of multiple cables to be stranded, and to propose a power cable stranding device and a stranding method thereof.

[0008] To achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A power cable stranding device includes a base, on the top of which a fixed seat and a power cable stranding circle are fixedly arranged;

[0010] A rotating disk, rotatably penetrating through the fixed seat, with a plurality of cable holes arranged inside it, and a first toothed ring fixedly sleeved on the outer wall;

[0011] A driving motor, fixed on the base, with a first gear meshing with the first toothed ring arranged on the output shaft, and further includes:

[0012] A lead screw, fixed on the side of the rotating disk facing the power cable stranding circle;

[0013] The first fixed disk is fixedly sleeved on the lead screw, and a plurality of rotating cylinders corresponding to the cable holes coaxially are rotatably penetrated through the inside thereof, and high-definition cameras are arranged on the inner walls of the respective rotating cylinders;

[0014] The second fixed disk is slidably sleeved on the lead screw;

[0015] The reciprocating detection structure includes a rotating shaft arranged in the first fixed disk, a disk fixed to the end of the rotating shaft, a pin shaft eccentrically arranged on the disk, a frame body slidably matched with the pin shaft, a rack fixed to the frame body, and a second toothed ring fixed to the outer wall of the rotating cylinder, wherein the rack is meshed with the second toothed ring;

[0016] The polishing structure includes moving plates arranged on both sides of the frame body, a fine abrasive belt connecting the moving plates, a fixed cylinder arranged on the frame body, a sliding rod slidably arranged in the fixed cylinder, a magnet block arranged at the end of the sliding rod, and an electromagnet arranged in the fixed cylinder;

[0017] Wherein, when the driving motor drives the rotating disk to drive the lead screw to rotate, the first fixed disk drives the rotating shaft to drive the disk to rotate through the magnetic coupler, so that the pin shaft pushes the frame body to reciprocate, the rack is meshed with the second toothed ring to drive the rotating cylinder to reciprocate, and the high-definition camera performs circular detection on the surface of the cable; when a scratch is detected, the electromagnet is energized to repel the magnet block to tighten the fine abrasive belt to polish the cable.

[0018] As a further improvement of the above technical solution:

[0019] It further includes a tension structure, which includes a sliding rod arranged in the second fixed disk, a spring abutted against the sliding rod, and a guide roller arranged at the end of the sliding rod. At the same time, the compression amount of the spring feeds back the cable tension through a pressure sensor. A second gear meshed with the internal toothed ring in the fixed seat is arranged on the input shaft of the magnetic coupler. The revolution and rotation movements of the second gear are converted into a pure rotation movement of the rotating shaft through the magnetic coupler. A matching structure of a sliding pin and a sliding groove is arranged between the moving plate and the first fixed disk. The sliding pin extends radially along the first fixed disk into the sliding groove. An annular groove is arranged on the outer wall of the guide roller, and the cable is embedded in the annular groove. The pre-tightening force of the spring keeps the cable under a constant tension. The second fixed disk is provided with a nut block threadedly connected to the lead screw. Rotating the nut block can adjust the distance between the second fixed disk and the power cable stranding coil. A tension spring sleeved on the sliding rod is arranged between the fixed cylinder and the sliding rod. When the electromagnet is not energized, the pulling force of the tension spring separates the fine abrasive belt from the cable. The second fixed disk is fixed with an L-shaped support arm, and a fixed ring with an internal sponge cleaning ring is arranged at the end of the L-shaped support arm. When the cable passes through the fixed ring, the sponge cleaning ring adsorbs the polishing debris. The signal output ends of multiple pressure sensors in the tension structure are connected to a control system.

[0020] In this application, a stranding method of a power cable stranding device includes the following steps:

[0021] S1: The cable is inserted into the stranding coil to start stranding

[0022] Multiple cables sequentially pass through the cable holes, the rotating cylinder and converge into the power cable stranding coil. The driving motor drives the rotating disk to rotate through the engagement of the first gear and the first toothed ring. The rotating disk synchronously drives the first fixed disk and the second fixed disk to rotate through the lead screw, so that the cable is stranded and wound up in the power cable stranding coil.

[0023] S2: The camera detects the cable through gear transmission

[0024] The rotating disk drives the first fixed disk to rotate through the lead screw. The first fixed disk drives the second gear to revolve through the magnetic coupler; the second gear meshes with the internal toothed ring to achieve self-rotation. The magnetic coupler transmits the power to the rotating shaft to drive the disk and the pin shaft to rotate; the pin shaft cooperates with the frame to make it reciprocate. The frame meshes with the second toothed ring through the rack to drive the rotating cylinder to rotate reciprocally, so that the high-definition camera performs a full-circle detection on the cable surface.

[0025] S3: The electromagnet drives the fine sand belt for polishing

[0026] When the high-definition camera detects a scratch on the cable surface, the electromagnet is energized to generate a repulsive force with the magnet block, overcoming the pulling force of the tension spring to push the sliding rod outward, driving the moving plate to expand so that the fine sand belt clings to the cable; the frame drives the moving plate to reciprocate through the fixed cylinder and the sliding rod, and the fine sand belt polishes the cable surface.

[0027] S4: The spring adjusts the guide roller to tighten the cable

[0028] When the second fixed disk drives the U-shaped seat to rotate, the spring and the sliding rod cooperate to keep the cable on the guide roller under a constant tension. The pressure sensor monitors the tightening force in real time; by rotating the nut block, the axial position of the second fixed disk can be adjusted, thereby adjusting the stranding angle of the cable in the power cable stranding coil.

[0029] S5: The sponge ring removes polished metal impurities

[0030] After the cable is polished, it passes through the fixed ring. The sponge cleaning ring adsorbs and removes the metal impurities shed by the fine sand belt, completing the impurity collection and cable surface cleaning.

[0031] Beneficial effects: In the present invention, one end of the rotating shaft is fixed with a disc, and a pin shaft is fixed on one side of the disc deviating from the center of the circle. The pin shaft is slidably engaged with the frame body. A rotating cylinder is rotatably penetrated through the first fixed disc. The frame body is fixed with a rack through a connecting block. A second toothed ring is fixedly sleeved on the outer wall of the rotating cylinder; the first fixed disc drives the second gear to revolve through a magnetic coupler. The second gear is engaged with the internal toothed ring to drive the second gear to rotate self, and then drives the disc and the pin shaft to rotate. The cooperation between the pin shaft and the frame body drives the frame body to reciprocate. The frame body drives the rotating cylinder to reciprocate through the cooperation between the rack and the second toothed ring. The high-definition camera can detect the surface of the cable passing through the rotating cylinder, facilitating the fine sand belt to polish the scratched part;

[0032] In the present invention, sliding rods are slidably connected in both of the two fixed cylinders. The mutually remote ends of the two sliding rods are respectively fixedly connected to the corresponding moving plates. A tension spring is fixed on one side of the moving plate close to the adjacent fixed cylinder. One end of the sliding rod is fixed with a magnet block, and an electromagnet is fixedly embedded on the inner wall of one side of the fixed cylinder; the repulsive force between the electromagnet and the magnet block is greater than the tensile force of the tension spring, and the sliding rod drives the moving plate to move outwards. The two moving plates can tighten the fine sand belt, and then the fine sand belt closely adheres to the outer wall of the cable. Then the frame body drives the moving plate to reciprocate through the fixed cylinder and the sliding rod, and the fine sand belt can polish the outer wall of the cable, avoiding the cable from breaking after later stranding;

[0033] In the present invention, pressure sensors are fixedly embedded on the inner walls of the mutually close sides of multiple circular grooves. Sliding rods are slidably connected in multiple circular grooves. Springs are abutted between the sliding rods and the adjacent pressure sensors. The mutually remote ends of the multiple sliding rods are all fixed with U-shaped seats, and guide rollers are rotatably connected in multiple U-shaped seats; when the second fixed disc drives the U-shaped seat to rotate to guide the position of the cable, the cooperation between the spring and the sliding rod can keep the cable laid on the guide roller in a tightened state all the time, avoiding the cable from becoming slack. And the pressure applied by the spring to the pressure sensor can detect the tightening force of the cable on the guide roller.

[0034] In the present invention, it is possible to detect scratches on the surface of the cable during the stranding process of the cable, and polish the scratches in time, ensuring the surface finish of the cable surface, avoiding the cable from breaking during the later stranding process. In addition, when the guide roller guides the cable, the cooperation between the spring and the pressure sensor ensures that the cable is in a tightened state, avoiding the cable after stranding from becoming slack and improving the quality of cable stranding. Description of the drawings

[0035] Figure 1 It is a three-dimensional structural schematic diagram of a power cable stranding device provided in Embodiment 1 of the present invention;

[0036] Figure 2Three-dimensional exploded structural schematic diagram of a rotating disk and a first toothed ring of a power cable stranding device provided in Embodiment 1 of the present invention;

[0037] Figure 3 Three-dimensional structural schematic diagram of a first fixed disk, a moving plate and an inner toothed ring of a power cable stranding device provided in Embodiment 1 of the present invention;

[0038] Figure 4 Three-dimensional exploded structural schematic diagram of a moving plate, a fine sand belt, a disk and a magnetic coupling of a power cable stranding device provided in Embodiment 1 of the present invention;

[0039] Figure 5 Three-dimensional exploded structural schematic diagram of a fixed cylinder, a sliding rod and a moving plate of a power cable stranding device provided in Embodiment 1 of the present invention;

[0040] Figure 6 Three-dimensional sectional structural schematic diagram of a rotating cylinder of a power cable stranding device provided in Embodiment 1 of the present invention;

[0041] Figure 7 Three-dimensional sectional structural schematic diagram of a second fixed disk of a power cable stranding device provided in Embodiment 1 of the present invention;

[0042] Figure 8 Three-dimensional structural schematic diagram of a second fixed disk, a lead screw and a U-shaped seat of a power cable stranding device provided in Embodiment 1 of the present invention;

[0043] Figure 9 Sectional structural schematic diagram of a first fixed disk, a sponge cleaning ring and the like of a power cable stranding device provided in Embodiment 2 of the present invention.

[0044] In the figure: 1, base; 2, fixed seat; 3, rotating disk; 4, cable hole; 5, first toothed ring; 6, driving motor; 7, first gear; 8, lead screw; 9, first fixed disk; 10, rotating shaft; 11, disk; 12, pin shaft; 13, moving plate; 14, sliding pin; 15, sliding groove; 16, frame; 17, fixed cylinder; 18, sliding rod; 19, magnet block; 20, electromagnet; 21, tension spring; 22, fine sand belt; 23, magnetic coupling; 24, second gear; 25, inner toothed ring; 26, connecting block; 27, rack; 28, rotating cylinder; 29, second toothed ring; 30, high-definition camera; 31, second fixed disk; 32, nut block; 33, circular groove; 34, sliding rod; 35, spring; 36, pressure sensor; 37, U-shaped seat; 38, guide roller; 39, annular groove; 40, power cable stranding coil; 41, L-shaped support arm; 42, fixing ring; 43, sponge cleaning ring. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0046] Embodiment 1: Refer to Figure 1 , Figure 2 , Figure 3 and Figure 8 , a stranding device, which relates to the technical field of cable processing. The stranding device includes a base 1, and a fixed seat 2 and a power cable stranding ring 40 are firmly fixed on the top of the base 1. A rotating disk 3 is designed inside the fixed seat 2, and the rotating disk 3 can rotate freely and passes through the fixed seat 2. One side of the rotating disk 3 close to the power cable stranding ring 40 is fixedly connected with a lead screw 8. A first fixed disk 9 is fixedly sleeved on the outer wall of the lead screw 8. At the same time, a second fixed disk 31 is also slidably sleeved on the outer wall of the lead screw 8, so that the second fixed disk 31 can move along the lead screw 8 to adjust its position.

[0047] Refer to Figure 1 and Figure 2 , the rotating disk 3 has a plurality of cable holes 4 inside it for accommodating and guiding the power cable. A first toothed ring 5 is fixedly sleeved on the outer wall of the rotating disk 3, and the first toothed ring 5 is located on the side of the fixed seat 2 away from the first fixed disk 9. In order to realize the rotation drive of the rotating disk 3, a drive motor 6 is fixed on the top of the base 1 through a frame. A first gear 7 meshing with the first toothed ring 5 is fixed on the output shaft of the drive motor 6.

[0048] Specifically, when the drive motor 6 is started, its output shaft drives the first gear 7 to rotate, and then drives the first toothed ring 5 to rotate through the meshing action. Finally, the rotating disk 3, the first fixed disk 9 and the connected second fixed disk 31 rotate together to realize the stranding process of the power cable.

[0049] Refer to Figures 2-4 and Figure 6 , inside the first fixed disk 9, a plurality of rotating cylinders 28 are rotatably penetrated. These rotating cylinders 28 correspond to the cable holes 4 provided on the fixed seat 2, and the cable can penetrate through these rotating cylinders 28. A plurality of high-definition cameras 30 are fixed inside each rotating cylinder 28, and these high-definition cameras 30 are used to carefully observe the surface of the cable penetrating through the rotating cylinder 28.

[0050] Refer to Figures 2-4 and Figure 6, on one side of the first fixed disk 9, a plurality of frames 16 are provided, and these frames 16 are used to support and move the related detection structures. On one side of the fixed seat 2, an internal gear ring 25 is fixed, which is matched with the reciprocating detection structure inside the first fixed disk 9. The reciprocating detection structure specifically includes a rotating shaft 10 rotating inside the first fixed disk 9. One end of the rotating shaft 10 extends to one side of the first fixed disk 9 and is fixed with a disk 11. On one side of the disk 11 deviating from the center of the circle, a pin shaft 12 is fixed, and the pin shaft 12 is slidably matched with the adjacent frame 16. On the side of the frame 16 close to the first fixed disk 9, a connecting block 26 is fixed, and at the bottom of the connecting block 26, a rack 27 is fixed. On the outer wall of the rotating cylinder 28, a second gear ring 29 is fixedly sleeved, and the second gear ring 29 is meshed with the rack 27, so that the connecting block 26 can drive the rotating cylinder 28 to rotate reciprocally through the rack 27 and the second gear ring 29. On the side of the first fixed disk 9 close to the fixed seat 2, a magnetic coupler 23 is also fixed. The output shaft of the magnetic coupler 23 is fixedly connected with one end of the rotating shaft 10, and the input shaft of the magnetic coupler 23 is fixed with a second gear 24, and the second gear 24 is meshed with the internal gear ring 25.

[0051] Specifically, when the first fixed disk 9 rotates, it drives the second gear 24 to revolve through the magnetic coupler 23. At the same time, the cooperation between the second gear 24 and the internal gear ring 25 makes the second gear 24 rotate self - rotatably. The magnetic coupler 23 transmits the power of the self - rotation of the second gear 24 to the rotating shaft 10, driving the disk 11 and the pin shaft 12 to rotate. The cooperation between the pin shaft 12 and the frame 16 further drives the frame 16 to move reciprocally. The frame 16 then drives the rotating cylinder 28 to rotate reciprocally through the cooperation between the rack 27 and the second gear ring 29, so that the high - definition camera 30 can comprehensively detect the surface of the cable passing through the rotating cylinder 28.

[0052] Refer to Figures 3-5 , on both sides of the frame 16, two moving plates 13 are provided. On the side of the two moving plates 13 close to each other, fine sand belts 22 are fixed, and the fine sand belts 22 are sleeved on the outer wall of the adjacent cable. Inside the frame 16, a polishing structure is provided for driving the fine sand belts 22 to polish the outer wall of the cable. The polishing structure specifically includes two fixed cylinders 17 fixed on both sides of the frame 16. Inside the two fixed cylinders 17, sliding rods 18 are slidably connected. One end of the two sliding rods 18 away from each other is respectively fixed with the corresponding moving plate 13. The two moving plates 13 are both slidably connected to one side of the first fixed disk 9 to ensure their stable movement. On the side of the moving plate 13 close to the adjacent fixed cylinder 17, a tension spring 21 is fixed, and the tension spring 21 is sleeved on the outer wall of the sliding rod 18 to provide a certain pulling force. One end of the sliding rod 18 close to the frame 16 is fixed with a magnet block 19, and on the inner wall of the side of the fixed cylinder 17 close to the frame 16, an electromagnet 20 is fixedly embedded.

[0053] Specifically, when the electromagnet 20 starts to be energized, a repulsive force is generated between the electromagnet 20 and the magnet block 19, and this repulsive force is greater than the tension of the tension spring 21, so that the slide bar 18 drives the movable plate 13 to move outward. The two movable plates 13 can therefore tighten the fine sand belt 22 so that the fine sand belt 22 is close to the outer wall of the cable. Then, when the frame 16 moves back and forth, it drives the movable plate 13 to move back and forth through the fixed cylinder 17 and the slide bar 18, and the fine sand belt 22 polishes the outer wall of the cable, effectively avoiding the cable from breaking after the later twisting.

[0054] Reference Figure 7 and Figure 8 In addition, a tension structure is also provided on the second fixed disk 31, and the tension structure is used to make the multiple cables in a taut state when entering the power cable twisting ring 40 for twisting, so as to ensure the smooth progress of the twisting process and the quality of the cable. The tension structure includes a plurality of circular grooves 33 provided inside the second fixed disk 31. These circular grooves 33 are not isolated, but close to each other, and a precision pressure sensor 36 is fixedly embedded on the inner wall of one side thereof. A sliding rod 34 is slidably connected in the circular groove 33, and a spring 35 is used to realize a resistance connection between the sliding rod 34 and the adjacent pressure sensor 36. The role of the spring 35 is crucial, as it can apply pressure to the pressure sensor 36, and this pressure is the key to detecting the cable tension. A U-shaped seat 37 is fixed to the end of the sliding rod 34 away from the spring 35, and a guide roller 38 is rotatably connected in the U-shaped seat 37. The position of the guide roller 38 corresponds to the rotating cylinder 28, so as to ensure the smooth guidance of the cable during the twisting process.

[0055] Specifically, when the second fixed plate 31 drives the U-shaped seat 37 to rotate and guide the position of the cable, the cooperation between the spring 35 and the sliding rod 34 can ensure that the cable on the guide roller 38 is always in a taut state, thereby effectively preventing the cable from becoming loose. At the same time, the pressure applied by the spring 35 to the pressure sensor 36 can detect the tension of the cable on the guide roller 38 in real time, providing strong support for the precise control of the cable twisting process.

[0056] Reference Figure 8 , the second fixed disk 31 is rotatably connected to the side away from the first fixed disk 9 with a nut block 32. The nut block 32 is threadedly sleeved on the outer wall of the screw rod 8. This design allows the second fixed disk 31 to be easily driven to slide on the screw rod 8 through the rotation of the nut block 32, thereby accurately controlling the distance between the second fixed disk 31 and the power cable twisting ring 40. The adjustment of this distance is very important, as it directly affects the presentation angle of the cable when it is twisted in the power cable twisting ring 40, thereby determining the tightness of the cable twisting.

[0057] Reference Figure 7 and Figure 8, in order to further improve the stability and accuracy of cable stranding, an annular groove 39 is carefully designed on the outer wall of the guiding roller 38. The function of this annular groove 39 is to limit the cable wound around the outer wall of the guiding roller 38, ensuring that the cable can run stably and accurately on the guiding roller 38 and avoiding deviation.

[0058] Referring to Figure 3 and Figure 4 , in order to achieve the stability of the moving plate 13 during movement, a sliding pin 14 is firmly fixed to the side of the moving plate 13 close to the first fixed disk 9. Correspondingly, a plurality of sliding grooves 15 are designed on one side of the first fixed disk 9. During installation, ensure that one end of the sliding pin 14 can accurately extend into the adjacent sliding groove 15 and form a sliding connection with the sliding groove 15. This design enables the sliding pin 14 to slide stably in the sliding groove 15 when the moving plate 13 moves, effectively increasing the stability of the movement of the moving plate 13 and avoiding shaking or deviation during the movement.

[0059] Furthermore, a storage battery is provided inside the first fixed disk 9 to supply electrical energy to the pressure sensor 36, the high-definition camera 30, and the electromagnet 20.

[0060] Furthermore, the specific method for the device to wind and strand the cable can refer to the utility model with the publication number CN116825449B.

[0061] Embodiment 2: Referring to Figure 9 , on the basis of Embodiment 1, for the purpose of cleaning the cable after being polished by the fine abrasive belt 22, a plurality of L-shaped support arms 41 are fixed to the side of the second fixed disk 31 away from the power cable stranding circle 40. Fixing rings 42 are fixed to the ends of these L-shaped support arms 41 away from the lead screw 8, and the cable needs to pass through these fixing rings 42. Inside the fixing rings 42, a sponge cleaning ring 43 is also detachably fixed, and the saturated sponge cleaning ring 43 can be replaced regularly. The sponge cleaning ring 43 can also be a steel wool cleaning ring.

[0062] Specifically, when the cable passes through the fixing ring 42, the sponge cleaning ring 43 can be in close contact with the outer wall of the cable, effectively removing the metal impurities attached to the outer wall of the cable and adsorbing them on the sponge cleaning ring 43, thereby completing the collection of metal impurities. This design not only avoids the waste of metal impurities but also ensures the cleanliness of the cable and improves the quality of the cable.

[0063] A stranding method of a power cable stranding device includes the following steps:

[0064] S1. Multiple cables sequentially pass through the cable holes 4 and the rotating cylinder 28 and converge within the power cable stranding loop 40. Then, the driving motor 6 drives the rotating disk 3 to rotate through the cooperation of the first gear 7 and the first toothed ring 5. The rotating disk 3 synchronously drives the first fixed disk 9 and the second fixed disk 31 to rotate through the lead screw 8. Further, multiple cables complete the stranding operation within the power cable stranding loop 40 and are then wound up;

[0065] S2. During the cable stranding process, the outer wall of the cable is detected by the high-definition camera 30. Specifically, the rotating disk 3 drives the first fixed disk 9 to rotate through the lead screw 8. The first fixed disk 9 drives the second gear 24 to revolve through the magnetic coupler 23. The second gear 24 is engaged with the internal toothed ring 25 to drive the second gear 24 to rotate on its own axis. The magnetic coupler 23 transmits the power of the rotation of the second gear 24 on its own axis to the rotating shaft 10 and drives the disk 11 and the pin shaft 12 to rotate. The cooperation between the pin shaft 12 and the frame 16 drives the frame 16 to reciprocate. The frame 16 drives the rotating cylinder 28 to reciprocate through the cooperation of the rack 27 and the second toothed ring 29. Further, the high-definition camera 30 can detect the surface of the cable passing through the rotating cylinder 28;

[0066] S3. When the high-definition camera 30 detects scratches on the surface of the cable, the electromagnet 20 starts to be energized. The repulsive force between the electromagnet 20 and the magnet block 19 is greater than the tensile force of the tension spring 21. The sliding rod 18 drives the moving plate 13 to move outward. The two moving plates 13 can tighten the fine sand belt 22. Further, the fine sand belt 22 closely adheres to the outer wall of the cable. Then, the frame 16 drives the moving plate 13 to reciprocate through the fixed cylinder 17 and the sliding rod 18. The fine sand belt 22 can polish the outer wall of the cable to avoid the cable breaking after later stranding;

[0067] S4. Additionally, when the second fixed disk 31 drives the U-shaped seat 37 to rotate to guide the position of the cable, the cooperation between the spring 35 and the sliding rod 34 can keep the cable resting on the guide roller 38 always in a taut state, avoiding the cable from becoming slack. Moreover, the pressure exerted by the spring 35 on the pressure sensor 36 can detect the tension force of the cable on the guide roller 38. In addition, by rotating the nut block 32, the second fixed disk 31 can be driven to move, which is used to adjust the angle of the cable during stranding within the power cable stranding loop 40 and control the tightness of the cable stranding;

[0068] S5. Additionally, after the fine sand belt 22 polishes the cable, there are metal impurities attached to it. When the cable passes through the fixed ring 42, the sponge cleaning ring 43 can remove the metal impurities and adsorb the metal impurities on the sponge cleaning ring 43 to complete the collection, avoiding waste.

[0069] However, as is well known to those skilled in the art, the working principles and wiring methods of the pressure sensor 36, the high-definition camera 30, the electromagnet 20, and the drive motor 6 are common knowledge, and they all belong to conventional means or well-known common sense. Therefore, they will not be elaborated here. Those skilled in the art can make arbitrary selections according to their needs or convenience.

[0070] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A power cable stranding device, comprising a base (1), on the top of which a fixed seat (2) and a power cable stranding coil (40) are fixedly provided; A rotating disk (3) rotates through the fixed seat (2), and a plurality of cable holes (4) are arranged inside it, and a first toothed ring (5) is fixedly sleeved on the outer wall; The drive motor (6) is fixed to the base (1), and a first gear (7) meshing with the first toothed ring (5) is provided on the output shaft thereof, characterized in that, It further includes: A lead screw (8) is fixed on one side of the rotating disk (3) facing the power cable stranding coil (40); A first fixed disk (9) is fixedly sleeved on the lead screw (8), and a plurality of rotating cylinders (28) coaxial with the cable holes (4) are rotatably penetrated inside it, and a high-definition camera (30) is arranged on the inner wall of each rotating cylinder (28); A second fixed disk (31) is slidably sleeved on the lead screw (8); A reciprocating detection structure includes a rotating shaft (10) arranged in the first fixed disk (9), a disk (11) fixed to the end of the rotating shaft (10), a pin shaft (12) eccentrically arranged on the disk (11), a frame (16) slidably matched with the pin shaft (12), a rack (27) fixed to the frame (16), and a second toothed ring (29) fixed to the outer wall of the rotating cylinder (28), wherein the rack (27) meshes with the second toothed ring (29); A polishing structure includes moving plates (13) arranged on both sides of the frame (16), a fine abrasive belt (22) connecting the moving plates (13), a fixed cylinder (17) arranged on the frame (16), a sliding rod (18) slidably arranged in the fixed cylinder (17), a magnet block (19) arranged at the end of the sliding rod (18), and an electromagnet (20) arranged in the fixed cylinder (17); Wherein, when the driving motor (6) drives the rotating disk (3) to drive the lead screw (8) to rotate, the first fixed disk (9) drives the rotating shaft (10) to drive the disk (11) to rotate through the magnetic coupling (23), so that the pin shaft (12) pushes the frame (16) to move reciprocally, the rack (27) meshes with the second toothed ring (29) to drive the rotating cylinder (28) to rotate reciprocally, and the high-definition camera (30) performs annular detection on the cable surface; when a scratch is detected, the electromagnet (20) is energized to repel the magnet block (19) to tighten the fine abrasive belt (22) to polish the cable.

2. The power cable stranding device according to claim 1, characterized in that, It further includes a tension structure, which includes a sliding rod (34) arranged in the second fixed disk (31), a spring (35) abutting against the sliding rod (34), and a guide roller (38) arranged at the end of the sliding rod (34), and at the same time, the compression amount of the spring (35) feeds back the cable tension through the pressure sensor (36).

3. The power cable stranding device according to claim 1, characterized in that, The input shaft of the magnetic coupling (23) is provided with a second gear (24) meshing with the internal toothed ring (25) in the fixed seat (2), and the revolution and rotation movements of the second gear (24) are converted into the pure rotation movement of the rotating shaft (10) through the magnetic coupling (23).

4. The power cable stranding device according to claim 3, wherein, A matching structure of a sliding pin (14) and a sliding groove (15) is arranged between the moving plate (13) and the first fixed disk (9), and the sliding pin (14) extends radially along the first fixed disk (9) into the sliding groove (15).

5. The power cable stranding device according to claim 2, characterized in that, An annular groove (39) is arranged on the outer wall of the guide roller (38), the cable is embedded in the annular groove (39), and the pre-tightening force of the spring (35) keeps the cable under constant tension.

6. The power cable stranding device according to claim 1, characterized in that, The second fixed disk (31) is provided with a nut block (32) that is threadedly connected to the lead screw (8). Rotating the nut block (32) can adjust the distance between the second fixed disk (31) and the power cable stranding coil (40).

7. The power cable stranding device according to claim 1, characterized in that, A tension spring (21) sleeved on the sliding rod (18) is provided between the fixed cylinder (17) and the sliding rod (18). When the electromagnet (20) is not energized, the pulling force of the tension spring (21) separates the fine sand belt (22) from the cable.

8. The power cable stranding device according to claim 1, characterized in that, The second fixed disk (31) is fixed with an L-shaped support arm (41). The end of the L-shaped support arm (41) is provided with a fixing ring (42) with a built-in sponge cleaning ring (43). When the cable passes through the fixing ring (42), the sponge cleaning ring (43) adsorbs the polishing debris.

9. The power cable stranding device according to claim 2, wherein The signal output ends of multiple pressure sensors (36) in the tension structure are connected to the control system.

10. A stranding method for a power cable stranding device, applied to a power cable stranding device as described in claim 9, characterized in that, It includes the following steps: S1. The cable (4) is inserted into the stranding coil (40) and stranding is started: Multiple cables sequentially pass through the cable holes (4), the rotating cylinder (28), and converge into the power cable stranding coil (40). The driving motor (6) drives the rotating disk (3) to rotate through the engagement of the first gear (7) and the first toothed ring (5). The rotating disk (3) synchronously drives the first fixed disk (9) and the second fixed disk (31) to rotate through the lead screw (8), so that the cable is stranded and wound up in the power cable stranding coil (40). S2. The camera (30) detects the cable through gear transmission: The rotating disk (3) drives the first fixed disk (9) to rotate through the lead screw (8). The first fixed disk (9) drives the second gear (24) to revolve through the magnetic coupler (23). The second gear (24) meshes with the internal toothed ring (25) to achieve self-rotation. The magnetic coupler (23) transmits the power to the rotating shaft (10) to drive the disk (11) and the pin shaft (12) to rotate. The pin shaft (12) cooperates with the frame (16) to make it reciprocate. The frame (16) meshes with the second toothed ring (29) through the rack (27) to drive the rotating cylinder (28) to reciprocate, so that the high-definition camera (30) performs a full-circumference detection on the cable surface. S3. The electromagnet (20) drives the fine sand belt (22) to polish: When the high-definition camera (30) detects a scratch on the cable surface, the electromagnet (20) is energized to generate a repulsive force with the magnet block (19), overcoming the pulling force of the tension spring (21) to push the sliding rod (18) to move outward, driving the moving plate (13) to expand so that the fine sand belt (22) clings to the cable. The frame (16) drives the moving plate (13) to reciprocate through the fixed cylinder (17) and the sliding rod (18), and the fine sand belt (22) polishes the cable surface. S4. The spring (35) adjusts the guide roller (38) to tighten the cable: When the second fixed disk (31) drives the U-shaped seat (37) to rotate, the spring (35) and the sliding rod (34) cooperate to keep the cable on the guide roller (38) under a constant tension. The pressure sensor (36) monitors the tightening force in real time. By rotating the nut block (32), the axial position of the second fixed disk (31) can be adjusted, thereby adjusting the stranding angle of the cable in the power cable stranding coil (40). S5. The sponge ring (43) removes polished metal impurities: After the cable is polished, it passes through the fixing ring (42). The sponge cleaning ring (43) adsorbs and removes the metal impurities shed from the fine abrasive belt (22), completing the impurity collection and cable surface cleaning.

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