Power cable pair twisting device

Abstract

The invention discloses a power cable pair twisting device, and relates to the technical field of cable pair twisting, the power cable pair twisting device comprises a wire twisting chamber, the bottom of the wire twisting chamber is fixedly provided with a winding wheel, the bottom of the wire twisting chamber is fixedly provided with a guide column, the bottom of the wire twisting chamber is fixedly provided with a support plate, and the inner wall of the wire twisting chamber is provided with a chute. A sliding plate is slidably installed on the inner wall of the wire stranding chamber sliding groove, a motor is fixedly installed on the side, close to the supporting plate, of the sliding plate, a fixing rod is rotatably installed at the output end of the motor, a wire outlet wheel is fixedly installed on the side, close to the supporting plate, of the fixing rod, and a fixing device is further arranged at the bottom of the wire stranding chamber. When the motor is located at a high position to drive the wire outlet wheel to conduct wire stranding, dynamic force generated during starting, stopping or load changing is small, the influence of the force can be effectively avoided by fixing the motor, impact on a mechanical transmission system and a cable is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of cable twisting, in particular to a power cable twisting device. Background Art

[0002] Power cable twisting is the process of twisting two insulated wires together to reduce the impact of electromagnetic radiation and external electromagnetic interference. Through twisting, a twisted cable can be produced, which has better bending resistance and electronic signal anti-interference ability.

[0003] The patent with the patent announcement number CN109326388B relates to the field of cable twisting technology, including a twisting transmission device, a twisting device and a take-up device. The twisting transmission device is used to provide power to the twisting device, and the twisting is completed by the rotation of the twisting device. The take-up device is used to complete the take-up of the twisted cable; the take-up device includes a take-up transmission mechanism, a take-up drum device and a gear box. The take-up device can complete the rotation and reciprocating lateral movement of the take-up drum through the linkage of the gear box and the belt transmission mechanism. The power cable twisting device has good transmission stability, and the twisting process will not cause damage to the single wire; the number of wire wheels is less, which reduces the damage caused by the cable passing through the wire wheels; the linkage take-up of the take-up device only requires one power device, which saves energy and does not require other control devices, making the structure and control system of the equipment simpler, and also avoiding the problem of disordered wires caused by inaccurate control, ensuring the quality of the wire roll.

[0004] The above patent only requires one power device, which saves energy and does not require other control devices, making the structure and control system of the device simpler. However, when the motor drives the outlet wheel to rotate and twist, the motor may be in a higher position, so that the dynamic force generated by the motor when starting, stopping or changing load will be smaller, which will reduce the service life of the equipment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a power cable twisting device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a power cable twisting device, including a twisting chamber, a winding wheel is fixedly installed at the bottom of the twisting chamber, a guide column is fixedly installed at the bottom of the twisting chamber, a support plate is fixedly installed at the bottom of the twisting chamber, a sliding groove is opened on the inner wall of the twisting chamber, a sliding plate is slidably installed on the inner wall of the twisting chamber sliding groove, a motor is fixedly installed on the side of the sliding plate close to the support plate, a fixing rod is rotatably installed on the output end of the motor, a wire outlet wheel is fixedly installed on the side of the fixing rod close to the support plate, and a fixing device is also provided at the bottom of the twisting chamber; The fixing device includes a push plate, an elastic telescopic rod, a fixing clamp, a push plate, a sliding rod, a short rod and a sliding key. The push plate is fixedly installed on a side of the sliding plate close to the motor, the elastic telescopic rod is fixedly installed on the inner wall of the stranding chamber, the fixing clamp is fixedly installed on a side of the elastic telescopic rod close to the motor, the sliding rod is slidably installed on the inner wall of the stranding chamber, the short rod is slidably installed on the inner wall of the stranding chamber, the sliding key is slidably installed on the inner wall of the stranding chamber, and the push plate is fixedly installed on a side of the fixing clamp close to the motor.

[0007] According to the above technical solution, the fixing device also includes a ring, a protrusion, a connecting rod, a sliding rod and a key. The ring is slidably installed on the output end of the motor, the protrusion is fixedly installed on the side of the ring close to the motor, the sliding rod is slidably installed on the side of the fixed rod close to the motor, and the key is slidably installed on the side of the fixed rod away from the sliding rod. When the motor is in a higher position and drives the wire output wheel to twist the wire, the dynamic force generated during starting, stopping or load changes will be smaller. Fixing the motor can effectively avoid the influence of these forces, reduce the impact on the mechanical transmission system and cables, and extend the service life of the equipment.

[0008] According to the above technical solution, a circular groove is provided on the side of the support plate close to the outlet wheel, a rotating plate is slidably installed on the inner wall of the circular groove, a square groove is provided on the side of the card key away from the fixed rod, the card rod is elastically slidably installed on the inner wall of the square groove, the side of the card rod close to the outlet wheel is set as an inclined surface, the card rod is provided with an inclined surface so that no obstruction will be generated when the card rod moves toward the outlet wheel, the side of the card key close to the sliding rod is set as an inclined surface, the card key is provided with an inclined surface so that the sliding rod can push the card key to move, and a No. 1 spring is provided between the circular ring and the output end of the motor, and a No. 1 spring is provided. The spring is used to drive the ring back to its original position. The side of the protrusion close to the push plate is set as an inclined surface. The protrusion is provided with an inclined surface to facilitate the push plate to push the protrusion to move. The side of the sliding rod close to the push plate is set as an inclined surface. The sliding rod is provided with an inclined surface to facilitate the push plate to push the sliding rod to move. The side of the short rod and the sliding key close to each other is set as an inclined surface. The short rod is provided with an inclined surface to facilitate the movement of the sliding key. A No. 2 spring is provided between the sliding key and the inner wall of the twisted wire chamber. The No. 2 spring is provided to drive the sliding key back to its original position. The sliding key slides through the elastic telescopic rod.

[0009] According to the above technical solution, the inner wall of the stranding chamber is also provided with a guide device for guiding the cable on the surface of the outlet wheel and a protective device for preventing the cable from being pulled, the guide device includes a rotating shaft, a rotating rod, a clamping plate, a sliding buckle, a connecting rod, an L-shaped rod, a sliding key, a fixed block, a rotating rod, a buckle and a wire plate, the rotating shaft is fixedly installed on the side of the rotating plate close to the motor, the rotating rod is rotatably installed on the fixed rod away from the contact of the motor output end, the clamping plate is fixedly installed on the side of the rotating rod away from the fixed rod, the sliding buckle is slidably installed on the side of the fixed rod close to the rotating rod, one end of the connecting rod is fixedly installed on the side of the sliding buckle close to the sliding rod, the other end of the connecting rod is fixedly installed on the side of the sliding rod close to the sliding buckle, and the L-shaped rod is slidably installed The L-shaped rod is fixed to the side of the fixing rod close to the support plate, and a sliding rod is slidably installed on the inner wall of the L-shaped rod. The sliding key is slidably installed on the side of the fixing rod close to the L-shaped rod. The fixing block is fixedly installed on the side of the fixing rod close to the sliding key. The buckle is rotatably installed on the top of the sliding rod. The wire plate is slidably installed on the side of the sliding rod away from the L-shaped rod. One end of the rotating rod is rotatably installed on the side of the L-shaped rod close to the buckle, and the other end of the rotating rod is rotatably installed on the side of the buckle close to the L-shaped rod. The wire plate can effectively keep the cable in the correct position by pressing the wire against the cable, avoiding the cable from being offset or running off when being pulled out from the surface of the outlet wheel. This can ensure that the cable runs smoothly along the predetermined path during the stranding process and reduce damage caused by uneven stretching or friction.

[0010] The L-shaped rod has an inclined surface on one side close to the rotating rod, and the inclined surface on the L-shaped rod is used to facilitate the rotating rod to push the L-shaped rod to move. A slot is provided on the circumferential surface of the rotating shaft, and a block is fixedly installed on the side of the clamping plate close to the slot, and the shape of the block matches the slot. A No. 1 torsion spring is provided between the rotating rod and the fixed rod, and the No. 1 torsion spring is provided to drive the rotating rod to rotate toward the rotating shaft. The sliding key slides through the sliding rod, and a No. 2 torsion spring is provided between the buckle and the sliding rod, and the No. 2 torsion spring is provided to drive the buckle back to its original position. A No. 3 spring is provided between the sliding rod and the L-shaped rod, and the No. 3 spring is provided to drive the sliding rod to move in the direction away from the L-shaped rod. A No. 4 spring is provided between the wire plate and the sliding rod, and the No. 4 spring is provided to drive the guide plate to move toward the outlet wheel.

[0011] According to the above technical solution, the protection device includes a pulling rod, a pulling plate, a clamping plate and a pushing block. The pulling rod is slidably installed at the bottom of the fixed rod, the pushing block is fixedly installed at the bottom of the wire plate, the pulling plate is fixedly installed at the top of the pulling rod, the clamping plate is slidably installed on the side of the fixed rod close to the motor, and the clamping plate is fixedly installed on the side of the pulling plate close to the output end of the motor. When the fixed rod stops rotating, the cables on the surface of the outlet wheel will stop twisting. When the cable is almost pulled out, the cable will be over-stretched on the outlet wheel. This stretching may cause the cable insulation layer to be damaged or even broken. By stopping the rotation of the fixed rod, such damage can be prevented.

[0012] According to the above technical solution, the protection device also includes a fixing buckle, an outer rod, an inner rod, a block, a pressure plate and a controller. The outer rod is fixedly installed on the top of the fixing rod, the inner rod is slidably installed on the inner wall of the outer rod, a sliding groove is provided at the bottom of the outer rod, the block is fixedly installed on the side of the inner rod close to the sliding groove, the fixing buckle is fixedly installed on the side of the pulling rod close to the block, the pressure plate is slidably installed on the inner wall of the stranding chamber, and the controller is arranged on the inner wall of the stranding chamber. When the fixing rod stops rotating, the fixing rod will quickly stop rotating due to the friction between the inner rod and the inner wall of the stranding chamber, thereby avoiding inertia from pulling the cable on the outlet wheel. If the cable is pulled too tight, the equipment will be under excessive pressure, which may damage the components inside the twisting device.

[0013] According to the above technical solution, the fixing buckle slides through the card block, and a No. 5 spring is provided between the inner rod and the outer rod. The No. 5 spring is provided to drive the inner rod to move away from the outer rod. The side of the pressure plate close to the inner rod is set as an inclined surface. The pressure plate is provided with an inclined surface to facilitate the inner rod to push the pressure plate to move. The control end of the controller is electrically connected to the total power supply of the twisting chamber.

[0014] The present invention provides a power cable twisting device, which has the following beneficial effects: (1) In this invention, the movement of the sliding key will release the limit on the elastic telescopic rod, and the elastic telescopic rod will push the fixing clamp to move toward the direction of the motor, and the fixing clamp will fix the motor. When the motor is in a higher position and drives the outlet wheel to twist the wire, the dynamic force generated during starting, stopping or load changes will be smaller. Fixing the motor can effectively avoid the influence of these forces, reduce the impact on the mechanical transmission system and cables, and extend the service life of the equipment.

[0015] (2) In this invention, the rotation of the fixed rod drives the rotation of the rotating shaft, the rotation of the rotating shaft drives the rotation of the rotating plate, the rotation of the motor output end drives the rotation of the rotating shaft, and the rotation of the rotating shaft directly causes the rotation of the rotating plate. This synchronous mechanical movement makes the operation of the entire stranding device more efficient and coordinated. The rotation of the rotating plate can help arrange, guide and transport the cables according to a predetermined trajectory during the stranding process.

[0016] (3) In the present invention, the rotation of the buckle will release the limit on the wire plate, and the wire plate will contact the outlet wheel to press and guide the cable on the surface of the outlet wheel. The wire plate can effectively keep the cable in the correct position by pressing and guiding the cable, avoiding the cable from being offset or running off the surface of the outlet wheel when it is pulled out from the outlet wheel. This can ensure that the cable runs smoothly along the predetermined path during the twisting process and reduce damage caused by uneven stretching or friction.

[0017] (4) In this invention, the movement of the pulling plate will drive the clamping plate to move away from the output end of the motor. When there is no cable left on the surface of the outlet wheel, the motor cannot drive the fixed rod to rotate. When the fixed rod stops rotating, the cables on the surface of the outlet wheel will stop twisting. When the cables are almost pulled out, the cables will be over-stretched on the outlet wheel. This stretching may cause the insulation layer of the cable to be damaged or even broken. By stopping the rotation of the fixed rod, such damage can be prevented.

[0018] (5) In the present invention, the movement of the inner rod will contact the inclined surface of the pressure plate, and the pressure plate will be pushed to move in the direction of the controller, and the pressure plate will press the control end of the controller, so that the power supply inside the twisting chamber is disconnected, and the winding wheel cannot be wound. When the fixed rod stops rotating, the fixed rod will quickly stop rotating due to the friction between the inner rod and the inner wall of the twisting chamber, so as to avoid the cable on the output wheel being pulled by inertia. If the cable is pulled too tight, it will cause the equipment to be under excessive pressure, which may damage the internal components of the twisting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the stranding chamber and the guide column of the present invention; Figure 3 This is a schematic diagram of the position structure of the sliding rod and the short rod of the present invention; Figure 4 It is a schematic diagram of the position structure of the rotating rod and the clamping plate of the present invention; Figure 5 This is a schematic diagram of the position structure of the sliding buckle and the connecting rod of the present invention; Figure 6 It is a schematic diagram of the position structure of the wire plate and the push block of the present invention; Figure 7 It is a schematic diagram of the position structure of the inner rod and the outer rod of the present invention.

[0020] In the figure: 1, twisting chamber; 2, winding wheel; 3, guide column; 4, support plate; 5, sliding plate; 6, motor; 7, fixed rod; 8, outlet wheel; 9, rotating plate; 10, push plate; 11, ring; 12, elastic telescopic rod; 13, fixing clamp; 14, push plate; 15, sliding rod; 16, short rod; 17, sliding key; 18, bump; 19, connecting rod; 191, sliding rod; 192, card key; 21 , shaft; 22, rotating rod; 23, clamping plate; 24, sliding buckle; 25, connecting rod; 26, L-shaped rod; 27, sliding key; 28, fixing block; 29, rotating rod; 291, buckle; 292, wire board; 31, pulling rod; 32, fixing buckle; 33, pulling plate; 34, clamping plate; 35, outer rod; 36, inner rod; 37, clamping block; 38, pressure plate; 39, controller; 391, pushing block. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 7 , one embodiment of the present invention is: a power cable twisting device, comprising a twisting chamber 1, a winding wheel 2 is fixedly installed at the bottom of the twisting chamber 1, a guide column 3 is fixedly installed at the bottom of the twisting chamber 1, a support plate 4 is fixedly installed at the bottom of the twisting chamber 1, a sliding groove is opened on the inner wall of the twisting chamber 1, a sliding plate 5 is slidably installed on the inner wall of the sliding groove of the twisting chamber 1, a motor 6 is fixedly installed on the side of the sliding plate 5 close to the support plate 4, a fixing rod 7 is rotatably installed on the output end of the motor 6, a wire outlet wheel 8 is fixedly installed on the side of the fixing rod 7 close to the support plate 4, and a fixing device is also provided at the bottom of the twisting chamber 1; The fixing device includes a push plate 10, an elastic telescopic rod 12, a fixing clamp 13, a push plate 14, a sliding rod 15, a short rod 16 and a sliding key 17. The push plate 10 is fixedly installed on the side of the sliding plate 5 close to the motor 6, the elastic telescopic rod 12 is fixedly installed on the inner wall of the stranding chamber 1, the fixing clamp 13 is fixedly installed on the side of the elastic telescopic rod 12 close to the motor 6, the sliding rod 15 is slidably installed on the inner wall of the stranding chamber 1, the short rod 16 is slidably installed on the inner wall of the stranding chamber 1, the sliding key 17 is slidably installed on the inner wall of the stranding chamber 1, and the push plate 14 is fixedly installed on the side of the fixing clamp 13 close to the motor 6.

[0023] The fixing device also includes a ring 11, a protrusion 18, a connecting rod 19, a sliding rod 191 and a key 192. The ring 11 is slidably installed on the output end of the motor 6, the protrusion 18 is fixedly installed on the side of the ring 11 close to the motor 6, the sliding rod 191 is slidably installed on the side of the fixed rod 7 close to the motor 6, and the key 192 is slidably installed on the side of the fixed rod 7 away from the sliding rod 191. When the motor 6 is in a higher position to drive the outlet wheel 8 to twist the wire, the dynamic force generated during starting, stopping or load changes will be smaller. Fixing the motor 6 can effectively avoid the influence of these forces, reduce the impact on the mechanical transmission system and cables, and extend the service life of the equipment.

[0024] A circular groove is provided on the side of the support plate 4 close to the outlet wheel 8, and a rotating plate 9 is slidably installed on the inner wall of the circular groove. A square groove is provided on the side of the card key 192 away from the fixed rod 7, and the card rod is elastically slidably installed on the inner wall of the square groove. The side of the card rod close to the outlet wheel 8 is set as an inclined surface. The inclined surface of the card rod is provided to avoid obstruction when the card rod moves toward the outlet wheel 8. The side of the card key 192 close to the sliding rod 191 is set as an inclined surface. The inclined surface of the card key 192 is provided to facilitate the sliding rod 191 to push the card key 192 to move. A No. 1 spring is provided between the ring 11 and the output end of the motor 6. The No. 1 spring is provided to drive the ring 11 back to its original The side of the protrusion 18 close to the push plate 14 is set as an inclined surface. The protrusion 18 is provided with an inclined surface to facilitate the pushing plate 14 to push the protrusion 18 to move. The side of the sliding rod 15 close to the push plate 10 is set as an inclined surface. The sliding rod 15 is provided with an inclined surface to facilitate the pushing plate 10 to push the sliding rod 15 to move. The side where the short rod 16 and the sliding key 17 are close to each other is set as an inclined surface. The short rod 16 is provided with an inclined surface to facilitate the movement of the sliding key 17. A No. 2 spring is provided between the sliding key 17 and the inner wall of the twisting chamber 1. The No. 2 spring is provided to drive the sliding key 17 back to its original position, and the sliding key 17 slides through the elastic telescopic rod 12.

[0025] When the cable is twisted, the motor 6 is moved upward, and the movement of the motor 6 drives the sliding plate 5 to move, and the movement of the sliding plate 5 drives the push plate 10 to move, and the movement of the push plate 10 will contact the inclined surface of the sliding rod 15, and the push plate 10 will push the sliding rod 15 to move, and the movement of the sliding rod 15 will drive the short rod 16 to move, and the movement of the short rod 16 will drive the sliding key 17 to move, and the movement of the sliding key 17 will release the limit of the elastic telescopic rod 12, and the elastic telescopic rod 12 will push the fixing clamp 13 to move in the direction of the motor 6, and the fixing clamp 13 will fix the motor 6, and the motor 6 is in a higher position to drive the cable outlet wheel 8 to twist the cable, and when starting The dynamic force generated when the machine stops or the load changes will be smaller. The fixed motor 6 can effectively avoid the influence of these forces, reduce the impact on the mechanical transmission system and cables, and extend the service life of the equipment. The movement of the fixing clamp 13 will drive the pushing plate 14 to move. The movement of the pushing plate 14 will contact the inclined surface of the protrusion 18, then the pushing plate 14 will push the protrusion 18 to move, the movement of the protrusion 18 will push the ring 11 to move, the movement of the ring 11 will push the connecting rod 19 to move, the movement of the connecting rod 19 will push the sliding rod 191 to move, the movement of the sliding rod 191 will contact the inclined surface of the card key 192, then the card key 192 will be pushed by the sliding rod 191, the movement of the card key 192 will drive the card rod to move, and the movement of the card rod will fix the wire-out wheel 8. When the wire-out wheel 8 is raised and fixed, it can ensure that the wire-out wheel 8 remains stable during the stranding process to prevent uneven stranding or failure due to loosening or offset. The stable wire-out position helps to improve the working accuracy and safety of the entire wire-stranding device.

[0026] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, the inner wall of the stranding chamber 1 is further provided with a guide device for guiding the cable on the surface of the outlet wheel 8 and a protective device for preventing the cable from being pulled, the guide device comprises a rotating shaft 21, a rotating rod 22, a clamping plate 23, a sliding buckle 24, a connecting rod 25, an L-shaped rod 26, a sliding card key 27, a fixed block 28, a rotating rod 29, a buckle 291 and a wire plate 292, the rotating shaft 21 is fixedly mounted on a side of the rotating plate 9 close to the motor 6, the rotating rod 22 is rotatably mounted on the fixed rod 7 away from the contact of the output end of the motor 6, the clamping plate 23 is fixedly mounted on a side of the rotating rod 22 away from the fixed rod 7, the sliding buckle 24 is slidably mounted on a side of the fixed rod 7 close to the rotating rod 22, one end of the connecting rod 25 is fixedly mounted on a side of the sliding buckle 24 close to the sliding rod 191, and the other end of the connecting rod 25 is fixedly mounted on a side of the sliding rod 191 close to the sliding buckle 24 On one side, the L-shaped rod 26 is slidably installed on the side of the fixed rod 7 close to the support plate 4, and a sliding rod is slidably installed on the inner wall of the L-shaped rod 26. The sliding key 27 is slidably installed on the side of the fixed rod 7 close to the L-shaped rod 26, and the fixed block 28 is fixedly installed on the side of the fixed rod 7 close to the sliding key 27. The buckle 291 is rotatably installed on the top of the sliding rod, and the wire plate 292 is slidably installed on the side of the sliding rod away from the L-shaped rod 26. One end of the rotating rod 29 is rotatably installed on the side of the L-shaped rod 26 close to the buckle 291, and the other end of the rotating rod 29 is rotatably installed on the side of the buckle 291 close to the L-shaped rod 26. The wire plate 292 can effectively keep the cable in the correct position by pressing the wire against the cable, avoiding the cable from being offset or running off when being pulled out from the surface of the outlet wheel 8. This can ensure that the cable runs smoothly along the predetermined path during the stranding process and reduce damage caused by uneven stretching or friction.

[0027] The side of the L-shaped rod 26 close to the rotating rod 22 is set as an inclined surface. The L-shaped rod 26 is provided with an inclined surface to facilitate the rotating rod 22 to push the L-shaped rod 26 to move. A slot is opened on the circumferential surface of the rotating shaft 21, and a block is fixedly installed on the side of the clamping plate 23 close to the slot, and the shape of the block matches the slot. A No. 1 torsion spring is provided between the rotating rod 22 and the fixed rod 7. The No. 1 torsion spring is provided to drive the rotating rod 22 to rotate toward the rotating shaft 21. The sliding card key 27 slides through the sliding rod, and a No. 2 torsion spring is provided between the buckle 291 and the sliding rod. The No. 2 torsion spring is provided to drive the buckle 291 to return to its original position. A No. 3 spring is provided between the sliding rod and the L-shaped rod 26. The No. 3 spring is provided to drive the sliding rod to move in the direction away from the L-shaped rod 26. A No. 4 spring is provided between the wire plate 292 and the sliding rod. The No. 4 spring is provided to drive the wire plate 292 to move toward the outlet wheel 8.

[0028] The protective device includes a pulling rod 31, a pulling plate 33, a clamping plate 34 and a pushing block 391. The pulling rod 31 is slidably installed at the bottom of the fixed rod 7, the pushing block 391 is fixedly installed at the bottom of the wire plate 292, the pulling plate 33 is fixedly installed at the top of the pulling rod 31, the clamping plate 34 is slidably installed on the side of the fixed rod 7 close to the motor 6, and the clamping plate 34 is fixedly installed on the side of the pulling plate 33 close to the output end of the motor 6. When the fixed rod 7 stops rotating, the cable on the surface of the outlet wheel 8 will stop twisting. When the cable is almost pulled out, the cable will be over-stretched on the outlet wheel 8. This stretching may cause the cable insulation layer to be damaged or even broken. By stopping the rotation of the fixed rod 7, such damage can be prevented.

[0029] The protection device also includes a fixing buckle 32, an outer rod 35, an inner rod 36, a block 37, a pressure plate 38 and a controller 39. The outer rod 35 is fixedly mounted on the top of the fixing rod 7, the inner rod 36 is slidably mounted on the inner wall of the outer rod 35, a sliding groove is provided at the bottom of the outer rod 35, the block 37 is fixedly mounted on the side of the inner rod 36 close to the sliding groove, the fixing buckle 32 is fixedly mounted on the side of the pulling rod 31 close to the block 37, the pressure plate 38 is slidably mounted on the inner wall of the twisting chamber 1, and the controller 39 is arranged on the inner wall of the twisting chamber 1. When the fixing rod 7 stops rotating, the fixing rod 7 will quickly stop rotating due to the friction between the inner rod 36 and the inner wall of the twisting chamber 1, so as to avoid the inertia driving the cable on the outlet wheel 8 to be pulled. If the cable is pulled too tight, the equipment will be under excessive pressure, which may damage the components inside the twisting device.

[0030] The fixing buckle 32 slides through the block 37, and a No. 5 spring is provided between the inner rod 36 and the outer rod 35. The No. 5 spring is provided to drive the inner rod 36 to move away from the outer rod 35. The side of the pressure plate 38 close to the inner rod 36 is set as an inclined surface. The pressure plate 38 is provided with an inclined surface to facilitate the inner rod 36 to push the pressure plate 38 to move. The control end of the controller 39 is electrically connected to the main power supply of the stranding chamber 1.

[0031] When the present embodiment is working, the movement of the sliding rod 191 will drive the connecting rod 25 to move, the movement of the connecting rod 25 will drive the sliding buckle 24 to move, the movement of the sliding buckle 24 will release the limit on the rotating rod 22, and the rotating rod 22 will be driven by the No. 1 torsion spring to rotate in the direction of the rotating shaft 21, the rotation of the rotating rod 22 will drive the clamping plate 23 to move, the movement of the clamping plate 23 will drive the block to move, the movement of the block will contact the inner wall of the slot, and the clamping plate 23 will clamp the rotating shaft 21, so that when the output end of the motor 6 rotates, the fixed rod 7 will be driven to rotate, the rotation of the fixed rod 7 will drive the rotating shaft 21 to rotate, the rotation of the rotating shaft 21 will drive the rotating plate 9 to rotate, the rotation of the output end of the motor 6 drives the rotating shaft 21 to rotate, the rotation of the rotating shaft 21 directly causes the rotating plate 9 to rotate, this synchronous mechanical movement makes the operation of the entire stranding device more efficient and coordinated, the rotation of the rotating plate 9 can help the cables to be arranged, guided and transported according to a predetermined trajectory during the stranding process, the rotation of the rotating rod 22 will contact the inclined surface of the L-shaped rod 26, and the L-shaped rod 26 will be driven by the rotating rod 22 is pushed to move in the direction of the outlet wheel 8, the movement of the L-shaped rod 26 will drive the sliding card key 27 to move, and the movement of the sliding card key 27 will contact the inclined surface of the fixed block 28, so that the sliding card key 27 will be pushed by the fixed block 28 to slide in the direction away from the L-shaped rod 26, and the limit of the slide rod will be released, and the slide rod will be driven by the third spring to move in the direction close to the outlet wheel 8, and the movement of the slide rod will drive the buckle 291 to move, and the movement of the buckle 291 will make the buckle 291 away from the L-shaped rod 26, and the rotating rod 29 will Pull the buckle 291 to rotate, and the rotation of the buckle 291 will release the limit on the wire plate 292, so that the wire plate 292 will contact the outlet wheel 8 to press and guide the cable on the surface of the outlet wheel 8. The wire plate 292 can effectively keep the cable in the correct position by pressing and guiding the cable, avoiding the cable from being offset or running off the surface of the outlet wheel 8 when it is pulled out from the surface of the outlet wheel 8. This can ensure that the cable runs smoothly along the predetermined path during the twisting process and reduce damage caused by uneven stretching or friction.

[0032] The wire plate 292 will continuously move in the direction away from the sliding rod as the cable on the surface of the outlet wheel 8 gradually decreases. The movement of the wire plate 292 will drive the push block 391 to gradually move in the direction of the pulling rod 31. When there is no cable left on the surface of the outlet wheel 8, the push block 391 will push the pulling rod 31 to move. The movement of the pulling rod 31 will pull the pulling plate 33 to move. The movement of the pulling plate 33 will drive the clamping plate 34 to move in the direction away from the output end of the motor 6. When there is no cable left on the surface of the outlet wheel 8, the motor 6 cannot drive the fixing rod 7 to rotate. When the fixing rod 7 stops rotating, the cable on the surface of the outlet wheel 8 will stop twisting. When the cable is almost pulled out, the cable will be over-stretched on the outlet wheel 8. This stretching may cause the cable insulation layer to be damaged or even broken. This damage can be prevented by stopping the rotation of the fixing rod 7. The movement of 1 will drive the movement of the fixing buckle 32, and the movement of the fixing buckle 32 will release the limit on the card block 37. When the limit of the card block 37 is released, the limit of the inner rod 36 is also released, and the inner rod 36 will be driven by the No. 5 spring to move toward the inner wall of the stranding chamber 1, and the inner rod 36 will contact the inner wall of the stranding chamber 1. The movement of the inner rod 36 will contact the inclined surface of the pressure plate 38, and the pressure plate 38 will be pushed to move in the direction of the controller 39, and the pressure plate 38 will press the control end of the controller 39, so that the power supply inside the stranding chamber 1 is disconnected, and the winding wheel 2 cannot be wound. When the fixing rod 7 stops rotating, the fixing rod 7 will quickly stop rotating due to the friction between the inner rod 36 and the inner wall of the stranding chamber 1, so as to avoid the inertia driving the cable on the outlet wheel 8 to be pulled. If the cable is pulled too tight, it will cause the equipment to be under excessive pressure, which may damage the components inside the twisting device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power cable twisting device, comprising a twisting chamber (1), characterized in that: A winding wheel (2) is fixedly mounted on the bottom of the stranding chamber (1), a guide column (3) is fixedly mounted on the bottom of the stranding chamber (1), a support plate (4) is fixedly mounted on the bottom of the stranding chamber (1), a sliding groove is provided on the inner wall of the stranding chamber (1), a sliding plate (5) is slidably mounted on the inner wall of the sliding groove of the stranding chamber (1), a motor (6) is fixedly mounted on the side of the sliding plate (5) close to the support plate (4), a fixing rod (7) is rotatably mounted on the output end of the motor (6), a wire outlet wheel (8) is fixedly mounted on the side of the fixing rod (7) close to the support plate (4), and a fixing device is also provided at the bottom of the stranding chamber (1); The fixing device comprises a push plate (10), an elastic telescopic rod (12), a fixing clamp (13), a push plate (14), a sliding rod (15), a short rod (16) and a sliding key (17); the push plate (10) is fixedly mounted on a side of the sliding plate (5) close to the motor (6); the elastic telescopic rod (12) is fixedly mounted on an inner wall of the stranding chamber (1); the fixing clamp (13) is fixedly mounted on a side of the elastic telescopic rod (12) close to the motor (6); the sliding rod (15) is slidably mounted on the inner wall of the stranding chamber (1); the short rod (16) is slidably mounted on the inner wall of the stranding chamber (1); the sliding key (17) is slidably mounted on the inner wall of the stranding chamber (1); and the push plate (14) is fixedly mounted on a side of the fixing clamp (13) close to the motor (6).

2. A power cable twisting device according to claim 1, characterized in that: The fixing device further comprises a circular ring (11), a protrusion (18), a connecting rod (19), a sliding rod (191) and a key (192); the circular ring (11) is slidably mounted on the output end of the motor (6); the protrusion (18) is fixedly mounted on a side of the circular ring (11) close to the motor (6); the sliding rod (191) is slidably mounted on a side of the fixing rod (7) close to the motor (6); and the key (192) is slidably mounted on a side of the fixing rod (7) away from the sliding rod (191); The inner wall of the stranding chamber (1) is also provided with a guide device for guiding the cable on the surface of the outlet wheel (8) and a protective device for preventing the cable from being pulled.

3. A power cable twisting device according to claim 2, characterized in that: A circular groove is provided on a side of the support plate (4) close to the outlet wheel (8), a rotating plate (9) is slidably mounted on the inner wall of the circular groove, a square groove is provided on a side of the clamping key (192) away from the fixed rod (7), the clamping rod is elastically slidably mounted on the inner wall of the square groove, a side of the clamping rod close to the outlet wheel (8) is set as an inclined surface, a side of the clamping key (192) close to the sliding rod (191) is set as an inclined surface, a No. 1 spring is provided between the circular ring (11) and the output end of the motor (6), a side of the protrusion (18) close to the push plate (14) is set as an inclined surface, a side of the sliding rod (15) close to the push plate (10) is set as an inclined surface, a side of the short rod (16) and the sliding key (17) close to each other is set as an inclined surface, a No. 2 spring is provided between the sliding key (17) and the inner wall of the twisted wire chamber (1), and the sliding key (17) slides through the elastic telescopic rod (12).

4. A power cable twisting device according to claim 3, characterized in that: The guide device comprises a rotating shaft (21), a rotating rod (22), a clamping plate (23), a sliding buckle (24), a connecting rod (25), an L-shaped rod (26), a sliding key (27), a fixed block (28), a rotating rod (29), a buckle (291) and a guide plate (292), wherein the rotating shaft (21) is fixedly mounted on a side of the rotating plate (9) close to the motor (6), the rotating rod (22) is rotatably mounted on a side of the fixed rod (7) away from the contact of the output end of the motor (6), the clamping plate (23) is fixedly mounted on a side of the rotating rod (22) away from the fixed rod (7), the sliding buckle (24) is slidably mounted on a side of the fixed rod (7) close to the rotating rod (22), one end of the connecting rod (25) is fixedly mounted on a side of the sliding buckle (24) close to the sliding rod (191), and the connecting rod (25) ) is fixedly mounted on a side of the sliding rod (191) close to the sliding buckle (24), the L-shaped rod (26) is slidably mounted on a side of the fixed rod (7) close to the support plate (4), a sliding rod is slidably mounted on the inner wall of the L-shaped rod (26), the sliding key (27) is slidably mounted on a side of the fixed rod (7) close to the L-shaped rod (26), the fixed block (28) is fixedly mounted on a side of the fixed rod (7) close to the sliding key (27), the buckle (291) is rotatably mounted on the top of the sliding rod, the wire plate (292) is slidably mounted on a side of the sliding rod away from the L-shaped rod (26), one end of the rotating rod (29) is rotatably mounted on a side of the L-shaped rod (26) close to the buckle (291), and the other end of the rotating rod (29) is rotatably mounted on a side of the buckle (291) close to the L-shaped rod (26).

5. A power cable twisting device according to claim 4, characterized in that: The side of the L-shaped rod (26) close to the rotating rod (22) is set as an inclined surface, the circumferential surface of the rotating shaft (21) is provided with a slot, and a block is fixedly installed on the side of the clamping plate (23) close to the slot, and the shape of the block matches the slot. A No. 1 torsion spring is provided between the rotating rod (22) and the fixed rod (7), the sliding key (27) slides through the sliding rod, a No. 2 torsion spring is provided between the buckle (291) and the sliding rod, a No. 3 spring is provided between the sliding rod and the L-shaped rod (26), and a No. 4 spring is provided between the wire plate (292) and the sliding rod.

6. A power cable twisting device according to claim 5, characterized in that: The protection device comprises a pulling rod (31), a pulling plate (33), a clamping plate (34) and a pushing block (391); the pulling rod (31) is slidably mounted on the bottom of the fixed rod (7); the pushing block (391) is fixedly mounted on the bottom of the wire plate (292); the pulling plate (33) is fixedly mounted on the top of the pulling rod (31); the clamping plate (34) is slidably mounted on a side of the fixed rod (7) close to the motor (6); and the clamping plate (34) is fixedly mounted on a side of the pulling plate (33) close to the output end of the motor (6).

7. A power cable twisting device according to claim 6, characterized in that: The protection device further comprises a fixing buckle (32), an outer rod (35), an inner rod (36), a clamping block (37), a pressure plate (38) and a controller (39), wherein the outer rod (35) is fixedly mounted on the top of the fixing rod (7), the inner rod (36) is slidably mounted on the inner wall of the outer rod (35), a sliding groove is provided at the bottom of the outer rod (35), the clamping block (37) is fixedly mounted on a side of the inner rod (36) close to the sliding groove, the fixing buckle (32) is fixedly mounted on a side of the pulling rod (31) close to the clamping block (37), the pressure plate (38) is slidably mounted on the inner wall of the stranding chamber (1), and the controller (39) is arranged on the inner wall of the stranding chamber (1).

8. A power cable twisting device according to claim 7, characterized in that: The fixing buckle (32) slides through the clamping block (37), a No. 5 spring is provided between the inner rod (36) and the outer rod (35), a side of the pressure plate (38) close to the inner rod (36) is provided as an inclined surface, and a control end of the controller (39) is electrically connected to the main power supply of the stranding chamber (1).

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