Power cable stranding machine

Abstract

The invention relates to the technical field of cable stranding, in particular to a power cable stranding machine which comprises an equipment frame and a main ring, the equipment frame rotationally sleeves the outer surface of the main ring, the equipment frame is provided with a power rotating structure for driving the main ring to rotate, the outer ring surface of the main ring is provided with a plurality of cable control structures, and each cable control structure comprises a branch frame. One end of the forked frame is fixed to the outer ring face of the main ring, the other end of the forked frame is rotationally connected with a shaft barrel, the forked frame is provided with a damping structure for applying resistance to rotation of the shaft barrel, two slidable driving rings are inserted into the shaft barrel, and the faces, away from each other, of the two driving rings are elastically connected with linkage rings. According to the pay-off device, the claw rods are gradually away from the shaft barrel to open and rotate, the driving rings pull the pressing rings to gradually get close to the axis of the shaft barrel through the pull ropes, when the pressing rings on the periphery of the bobbin make contact with the bobbin at the same time, the pressing rings on the periphery fix the two ends of the bobbin, it is guaranteed that the bobbin and the shaft barrel are coaxial, and it is guaranteed that the bobbin and the shaft barrel coaxially rotate during rotation for uniform pay-off.

Description

Technical Field

[0001] The present invention relates to the technical field of wire stranding for cables, and in particular to a power cable stranding machine. Background Art

[0002] A stranding machine is a mechanical device that can be widely used for stranding various soft / hard conductor wires, twisting multiple single-conductor wires into one strand to meet the process requirements of the wire; generally, stranding machines can be divided into single-strand stranding machines, pair-strand stranding machines, high-speed stranding machines, etc.; stranding machines are widely used in various soft and hard conductor wires and electronic wires.

[0003] Chinese Patent CN115116674B discloses a cable stranding machine, which is convenient for clamping the end of a single conductor in time when the release of a single conductor is completed, solving the problem that the single conductor separated from the single-conductor reel is loose and twisted with multiple other single conductors into one strand, resulting in the non-compliance of the process of the twisted wire, and the problem of inconvenient connection of a new single conductor. It includes a box body, on which a fixed shaft and a driving mechanism for driving the fixed shaft to rotate are provided. A turntable is fixedly connected to the fixed shaft, and a release mechanism is arranged on the turntable. A clamping and guiding mechanism and a winding mechanism are successively arranged on the right side of the release mechanism. The release mechanism includes a plurality of round rods fixedly installed on the turntable, and single-conductor reels are sleeved on the round rods. A plurality of first guiding rings and a plurality of U-shaped frames are arranged on the turntable, and a clamping assembly is rotatably connected to the U-shaped frames. The above-mentioned related technology has the following defects: After the raw material wire reel is used up, a new wire reel needs to be replaced. However, wire reels of different batches may have different sizes. But the existing cable stranding machines generally directly sleeve the wire reel on the surface of a shaft rod, and it cannot ensure the concentricity of the wire reel and the shaft rod. In this way, the wire reel will rotate eccentrically when pulling out the cable, resulting in the non-uniform pulling out of the cable. Therefore, a power cable stranding machine is proposed. Summary of the Invention

[0004] In order to coaxially install wire reels of different sizes and prevent the wire reels from rotating eccentrically during wire pay-off, the present invention provides a power cable stranding machine.

[0005] A power cable stranding machine provided by the present invention adopts the following technical solutions: It includes an equipment frame and a main ring. The equipment frame is rotatably sleeved on the outer surface of the main ring, and the equipment frame is equipped with a power rotation structure for driving the main ring to rotate. A plurality of wire control structures are installed on the outer ring surface of the main ring.

[0006] The control line structure includes a bifurcated frame. One end of the bifurcated frame is fixed to the outer ring surface of the main ring, and a shaft cylinder is rotatably connected to the other end of the bifurcated frame. The bifurcated frame is provided with a damping structure for applying resistance to the rotation of the shaft cylinder. Two slidable driving rings are inserted into the shaft cylinder. Elastic connection rings are arranged on the surfaces of the two driving rings facing away from each other. The connection rings are slidably inserted into the inner wall of the shaft cylinder, and the outer ring surfaces of the connection rings slidably penetrate the inner wall of the shaft cylinder. A transmission structure for controlling the relative movement of the two driving rings is installed in the shaft cylinder. One end of the connection ring located outside the shaft cylinder is elastically rotatably connected with a plurality of claw rods. An L-shaped groove is provided at the connection of the claw rods on the connection ring. A pressing ring is slidably inserted on the outer surface of the claw rod. An inner block is fixed to the inner ring surface of the pressing ring, and the pressing ring is slidably inserted into the inner ring surface of the claw rod. The inner block is elastically connected to the inside of the claw rod. A pull rope is arranged inside the claw rod. One end of the pull rope is fixed to the inner block, and the other end of the pull rope slidably penetrates the claw rod. The end of the pull rope located outside the claw rod slidably penetrates the outer ring surface of the connection ring, and the end of the pull rope located on the inner ring surface of the connection ring is fixed to the driving ring.

[0007] Optionally, a lead wire structure is installed at one end of the bifurcated frame.

[0008] The lead wire structure includes two limiting wheels in contact with each other and a passing cylinder. The limiting wheels are located between the passing cylinder and the bifurcated frame. The limiting wheels are rotatably connected to the bifurcated frame, and the passing cylinder is fixed to the bifurcated frame.

[0009] Optionally, guide wheels are arranged in contact with both the part of the pull rope located inside the connection ring and the part of the pull rope located inside the claw rod. The claw rod and the connection ring are respectively rotatably connected to the corresponding inner guide wheels.

[0010] Optionally, the damping structure includes an elastic damping sheet and a sleeve frame. One end of the sleeve frame is rotatably sleeved on the outer surface of the shaft cylinder, and the other end of the sleeve frame is fixed to the bifurcated frame. Grooves are evenly arranged on the outer ring surface at the connection of the shaft cylinder and the bifurcated frame. One end of the elastic damping sheet is fixed to the sleeve frame, and the other end of the elastic damping sheet is located inside the groove.

[0011] Optionally, the transmission structure includes a bidirectional threaded shaft, a driving bevel gear, and a driven bevel gear. The driving bevel gear meshes with the lower side of the driven bevel gear. The shaft cylinder is rotatably sleeved at both ends of the bidirectional threaded shaft in a damped manner. The two driving rings inside the shaft cylinder are respectively threadedly sleeved at both ends of the bidirectional threaded shaft. The driven bevel gear is coaxially and fixedly sleeved on one end of the bidirectional threaded shaft located outside the shaft cylinder. The bifurcated frame is rotatably sleeved on the outer surface of the shaft rod of the driving bevel gear.

[0012] Optionally, a damped telescopic transmission shaft is rotatably connected to one end of the bifurcated frame. The damped telescopic transmission shaft is chain-driven with the shaft rod of the driving bevel gear. The shape of the end of the damped telescopic transmission shaft close to the main ring is in the shape of a prism rod. A groove shaft is coaxially arranged on one side of the damped telescopic transmission shaft close to the axis of the main ring. The end of the groove shaft far from the main ring is in the shape of a prism groove matching the damped telescopic transmission shaft.

[0013] Optionally, a bevel gear ring is coaxially and rotatably sleeved on the outer surface of the main ring. A meshing bevel gear is coaxially fixed at one end of the groove shaft close to the main ring, and the meshing bevel gear meshes with the bevel gear ring.

[0014] Optionally, one end of the pressing ring close to the shaft cylinder protrudes in a plate shape, and the surface of the pressing ring away from the shaft cylinder is curved.

[0015] Optionally, the multiple claw rods connected to the linkage ring are circumferentially arrayed around the axis of the linkage ring. The connection between the linkage ring and the claw rod is in a convex block shape, and the connection between the shaft cylinder and the convex block of the linkage ring is in a long groove shape.

[0016] In summary, the present invention includes the following beneficial technical effects: 1. By setting components such as claw rods, pressing rings, driving rings, and pull ropes, when installing the bobbin, the outer claw rods gradually rotate toward the axis side of the shaft cylinder during the movement inside the bobbin. Then, control the two driving rings to approach each other. The driving ring first drives the linkage ring and the claw rods to approach the bobbin through elastic connection. After the claw rods on both sides of the bobbin come into contact with the bobbin, the claw rods gradually move away from the shaft cylinder and open and rotate. When the claw rods rotate to be perpendicular to the shaft cylinder, the claw rods stop rotating relative to the linkage ring. When the driving ring continues to move, it gradually moves away from the linkage ring. The driving ring pulls the pressing ring to gradually approach the axis of the shaft cylinder through the pull rope. When the pressing rings around the bobbin come into contact with the bobbin at the same time, the pressing rings around fix both ends of the bobbin, and at the same time ensure that the bobbin is coaxial with the shaft cylinder, ensuring that the bobbin rotates coaxially with the shaft cylinder during rotation for uniform wire pay-out.

[0017] 2. By setting components such as a damping telescopic transmission shaft, a groove shaft, and a bevel gear ring, by controlling the damping telescopic transmission shaft to expand and insert into the groove shaft, the groove shaft drives the damping telescopic transmission shaft to rotate synchronously. After the damping telescopic transmission shaft is separated from the groove shaft, the damping telescopic transmission shaft is separated from synchronous rotation with the groove shaft. When it is necessary to replace the bobbin on the surface of the shaft cylinder, control the cooperation between the groove shaft and the damping telescopic transmission shaft, and the movement of the two driving rings inside the shaft cylinder can be controlled. When it is necessary to replace the bobbins on the outside of multiple shaft cylinders, after controlling the corresponding groove shaft and damping telescopic transmission shaft to cooperate, control the bevel gear ring to rotate to drive multiple meshing bevel gears to rotate, and then drive the bidirectional threaded shafts inside the corresponding bobbins to be replaced through the cooperating groove shafts and damping shafts, so that multiple bobbins can be replaced simultaneously.

[0018] 3. By setting a limiting wheel and a wire passing cylinder, after the cable is pulled out from the bobbin, it passes between the two limiting wheels, and then the cable passes through the wire passing cylinder to guide the movement trajectory of the cable after it is pulled out from the bobbin. BRIEF DESCRIPTION OF THE DRAWINGS [[ID= / / ]]

[0019] [[ID= / / ]] Figure 1 is the overall structural schematic diagram of an embodiment of the present invention; Figure 2 is the side view structural schematic diagram of an embodiment of the present invention; Figure 3 It is a schematic structural diagram of the connection between the bevel gear ring and the main ring in the embodiment of the present invention; Figure 4 It is a schematic structural diagram of the connection between the driving bevel gear and the driven bevel gear in the embodiment of the present invention; Figure 5 It is a schematic structural diagram of the position distribution of the damping telescopic transmission shaft and the groove shaft in the embodiment of the present invention; Figure 6 It is a schematic structural diagram of the connection between the elastic damping sheet and the shaft cylinder in the embodiment of the present invention; Figure 7 It is a schematic structural diagram of the connection between the bidirectional threaded shaft and the shaft cylinder in the embodiment of the present invention; Figure 8 It is a schematic structural diagram of the connection between the linkage ring and the driving ring in the embodiment of the present invention; Figure 9 It is a schematic structural diagram of the inside of the claw rod in the embodiment of the present invention.

[0020] Reference numerals: 1, equipment frame; 2, main ring; 3, power rotation structure; 4, wire control structure; 41, fork frame; 42, shaft cylinder; 43, damping structure; 431, elastic damping sheet; 432, sleeve frame; 44, driving ring; 45, linkage ring; 46, claw rod; 47, transmission structure; 471, bidirectional threaded shaft; 472, driving bevel gear; 473, driven bevel gear; 48, inner block; 49, pressing ring; 410, pull rope; 4101, directional wheel; 411, damping telescopic transmission shaft; 412, groove shaft; 413, bevel gear ring; 414, meshing bevel gear; 5, lead structure; 51, limiting wheel; 52, passing cylinder. Detailed implementation manners

[0021] The following will further elaborate on the present invention in conjunction with the attached Figures 1-9 and make a more detailed description of the present invention.

[0022] The embodiment of the present invention discloses a power cable stranding machine. As Figures 1-9 shown, it includes an equipment frame 1 and a main ring 2. The equipment frame 1 is rotatably sleeved on the outer surface of the main ring 2. The equipment frame 1 is equipped with a power rotation structure 3 for driving the main ring 2 to rotate. The power rotation structure 3 includes a motor, a spur gear, and a spur gear ring. The spur gear ring is coaxially fixed to the main ring 2, the spur gear is fixed to the output end of the motor through a coupling, and the spur gear meshes with the spur gear ring. When the motor rotates, it can drive the main ring 2 to rotate through the meshing of the spur gear and the spur gear ring.

[0023] A plurality of wire control structures 4 are installed on the outer ring surface of the main ring 2.

[0024] The wire control structure 4 includes a fork frame 41. One end of the fork frame 41 is fixed to the outer ring surface of the main ring 2, and the other end of the fork frame 41 is rotatably connected to a shaft cylinder 42. The cable drum is sleeved on the surface of the shaft cylinder 42.

[0025] One end of the bifurcated frame 41 is provided with a lead structure 5.

[0026] The lead structure 5 includes two limiting wheels 51 and a passing cylinder 52 that are in contact with each other. The limiting wheel 51 is located between the passing cylinder 52 and the bifurcated frame 41. The limiting wheel 51 is rotatably connected to the bifurcated frame 41, and the passing cylinder 52 is fixed to the bifurcated frame 41. A semi-circular annular groove is formed on the circumferential surface of the limiting wheel 51. When the cable passes through the two limiting wheels 51, it will not come off. The cable pulled out from the cable drum passes through the two limiting wheels 51 and then passes through the inner ring side of the passing cylinder 52 to limit the trajectory of the cable after it is pulled out of the cable drum.

[0027] The bifurcated frame 41 is provided with a damping structure 43 that applies resistance to the rotation of the shaft cylinder 42.

[0028] The damping structure 43 includes an elastic damping piece 431 and a sleeve frame 432. One end of the sleeve frame 432 is rotatably sleeved on the outer surface of the shaft cylinder 42, and the other end of the sleeve frame 432 is fixed to the bifurcated frame 41. Grooves are evenly formed on the outer ring surface at the connection between the shaft cylinder 42 and the bifurcated frame 41. One end of the elastic damping piece 431 is fixed to the sleeve frame 432, and the other end of the elastic damping piece 431 is located inside the groove to apply resistance to the rotation of the shaft cylinder 42, ensuring that when the cable is pulled out, the cable will not be overly loose, affecting the later stranding together.

[0029] Two slidable driving rings 44 are inserted into the shaft cylinder 42. Elastic connection rings 45 are elastically connected to the mutually remote sides of the two driving rings 44. The connection rings 45 are slidably inserted into the inner wall of the shaft cylinder 42, and the outer ring surface of the connection rings 45 slidably penetrates the inner wall of the shaft cylinder 42. A transmission structure 47 for controlling the relative movement of the two driving rings 44 is installed inside the shaft cylinder 42.

[0030] The transmission structure 47 includes a bidirectional threaded shaft 471, a driving bevel gear 472, and a driven bevel gear 473. The driving bevel gear 472 meshes with the lower side of the driven bevel gear 473. The shaft cylinder 42 is damping rotatably sleeved at both ends of the bidirectional threaded shaft 471. The damping between the shaft cylinder 42 and the bidirectional threaded shaft 471 is less than the damping between the shaft cylinder 42 and the bifurcated frame 41. When the cable is pulled out to drive the rotation of the shaft cylinder 42, the shaft cylinder 42 can drive the bidirectional threaded shaft 471 to rotate synchronously. During the rotation of the bidirectional threaded shaft 471, due to the resistance between the shaft cylinder 42 and the bifurcated frame 41, the shaft cylinder 42 will not rotate synchronously with the bidirectional threaded shaft 471, causing the relative rotation between the bidirectional threaded shaft 471 and the shaft cylinder 42. The two driving rings 44 inside the shaft cylinder 42 are respectively threadedly sleeved at both ends of the bidirectional threaded shaft 471. During the forward and reverse rotation of the bidirectional threaded shaft 471, the two driving rings 44 can be respectively driven to approach or move away from each other. The driven bevel gear 473 is coaxially and fixedly sleeved on one end of the bidirectional threaded shaft 471 located outside the shaft cylinder 42, and the bifurcated frame 41 is rotatably sleeved on the outer surface of the shaft rod of the driving bevel gear 472.

[0031] One end of the forked bracket 41 is rotatably connected with a damping telescopic transmission shaft 411. The damping telescopic transmission shaft 411 can perform damping telescoping. After pulling the damping telescopic transmission shaft 411, the damping telescopic transmission shaft 411 can stop at the telescopic position after the tensile force is removed. The shaft rod of the damping telescopic transmission shaft 411 and the driving bevel gear 472 are driven by a chain, so that the damping telescopic transmission shaft 411 can drive the driving bevel gear 472 to rotate synchronously through the chain. Sprockets are arranged at the connection parts of the damping telescopic transmission shaft 411 and the driving bevel gear 472 and the chain. The shape of one end of the damping telescopic transmission shaft 411 close to the main ring 2 is in the shape of a prism rod. A groove shaft 412 is coaxially arranged on one side of the damping telescopic transmission shaft 411 close to the axis of the main ring 2. A bevel gear ring 413 is coaxially and rotatably sleeved on the outer surface of the main ring 2. One end of the groove shaft 412 close to the main ring 2 is coaxially fixed with an engaging bevel gear 414. The engaging bevel gear 414 meshes with the bevel gear ring 413. The end of the groove shaft 412 away from the main ring 2 is in the shape of a prism groove matching with the damping telescopic transmission shaft 411. When the damping telescopic transmission shaft 411 is inserted into the prism groove of the groove shaft 412, the groove shaft 412 can drive the damping telescopic transmission shaft 411 to rotate synchronously when rotating.

[0032] A plurality of claw rods 46 are elastically rotatably connected to the outer end of the shaft cylinder 42 outside the linkage ring 45. The elastic connection between the claw rods 46 and the linkage ring 45 has a tendency to drive the claw rods 46 closer to the axis of the shaft cylinder 42. The elastic connection between the linkage ring 45 and the claw rods 46 is an elastic material such as a torsion spring that can be elastically twisted. The linkage ring 45 is provided with an L-shaped groove at the connection of the claw rods 46, so that the maximum angle between the claw rods 46 and the axis of the shaft cylinder 42 is 90 degrees. A pressure ring 49 is slidably inserted on the outer surface of the claw rod 46. An inner block 48 is fixed to the inner ring surface of the pressure ring 49. One end of the pressure ring 49 close to the shaft cylinder 42 protrudes in a plate shape, so that the pressure ring 49 can press the circumferential surface of the bobbin when moving closer to the shaft cylinder 42. When a plurality of pressure rings 49 are in contact with the bobbin at the same time, the bobbin and the shaft cylinder 42 are coaxially installed together. The surface of the pressure ring 49 away from the shaft cylinder 42 is curved, which is convenient for the outer claw rods 46 to pass through the inside of the bobbin, so that the bobbin can move between the claw rods 46 at both ends outside the shaft cylinder 42. The pressure ring 49 is slidably inserted into the inner ring surface of the claw rod 46. The inner block 48 is elastically connected to the inside of the claw rod 46. The elastic connection between the inner block 48 and the claw rod 46 has a tendency to push the inner block 48 away from the shaft cylinder 42. The elastic connection between the inner block 48 and the claw rod 46 is through an elastic connection such as a spring or an elastic telescopic rod. A pull rope 410 is arranged inside the claw rod 46. One end of the pull rope 410 is fixed to the inner block 48. The other end of the pull rope 410 slidably penetrates through the claw rod 46. The plurality of claw rods 46 connected to the linkage ring 45 are circumferentially arrayed around the axis of the linkage ring 45. The connection between the linkage ring 45 and the claw rods 46 is in a convex block shape. The connection between the convex block of the shaft cylinder 42 and the linkage ring 45 is in a long groove shape. The long groove shape on the surface of the shaft cylinder 42 limits the movement track of the linkage ring 45. The outer end of the pull rope 410 located outside the claw rod 46 slidably penetrates through the outer ring surface of the linkage ring 45. One end of the pull rope 410 located on the inner ring surface of the linkage ring 45 is fixed to the driving ring 44. Guide wheels 4101 are arranged in contact with both the part of the pull rope 410 inside the linkage ring 45 and the part of the pull rope 410 inside the claw rod 46. The claw rod 46 and the linkage ring 45 are respectively rotatably connected to the corresponding inner guide wheels 4101. The guide wheels 4101 limit the movement track of the pull rope 410, so that one end of the pull rope 410 inside the claw rod 46 is parallel to the axis of the claw rod 46, and one end of the pull rope 410 inside the linkage ring 45 is parallel to the axis of the linkage ring 45.

[0033] The working principle is as follows: When disassembling the bobbin, control the two driving rings 44 to move away from each other. The driving rings 44 first gradually approach the connected linkage rings 45, causing the pressing ring 49 to gradually move away from the shaft cylinder 42. Then, during the continuous separation of the two driving rings 44 within the shaft cylinder 42, the claw rods 46 gradually rotate towards the shaft cylinder 42, and the outer claw rods 46 pass through the inside of the bobbin, enabling the removal of the bobbin outside the shaft cylinder 42 from the shaft cylinder 42. When installing the bobbin, after sleeving the bobbin on the surface of the shaft cylinder 42, push it between the claw rods 46 connected to the two linkage rings 45. When the bobbin moves, the outer claw rods 46 gradually rotate towards the axis side of the shaft cylinder 42 during the movement inside the bobbin. Then, control the two driving rings 44 to approach each other. The driving rings 44 first drive the linkage rings 45 and the claw rods 46 to approach the bobbin through elastic connection. After the claw rods 46 on both sides of the bobbin come into contact with the bobbin, when the two driving rings 44 continue to approach, the claw rods 46 gradually rotate away from the shaft cylinder 42 and open. After the claw rods 46 rotate to be perpendicular to the shaft cylinder 42, the claw rods 46 stop rotating relative to the linkage rings 45. When the driving rings 44 continue to move, they gradually move away from the linkage rings 45. The driving rings 44 pull the pressing ring 49 to gradually approach the axis of the shaft cylinder 42 through the pull rope 410. When the pressing rings 49 around the bobbin come into contact with the bobbin simultaneously, the pressing rings 49 around fix both ends of the bobbin, enabling the coaxial installation of the bobbin and the shaft cylinder 42.

[0034] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A power cable stranding machine, comprising an equipment frame (1) and a main ring (2), characterized in that: The device rack (1) is rotatably sleeved on the outer surface of the main ring (2). The device rack (1) is equipped with a power rotating structure (3) that drives the main ring (2) to rotate. A plurality of wire control structures (4) are installed on the outer ring surface of the main ring (2); The wire control structure (4) includes a bifurcated frame (41). One end of the bifurcated frame (41) is fixed to the outer ring surface of the main ring (2). The other end of the bifurcated frame (41) is rotatably connected to a shaft cylinder (42). The bifurcated frame (41) is equipped with a damping structure (43) that applies resistance to the rotation of the shaft cylinder (42). Two slidable driving rings (44) are inserted into the shaft cylinder (42). Elastic connection rings (45) are elastically connected to the mutually remote surfaces of the two driving rings (44). The connection rings (45) are slidably inserted into the inner wall of the shaft cylinder (42). The outer ring surface of the connection ring (45) slidably penetrates the inner wall of the shaft cylinder (42). A transmission structure (47) that can control the relative movement of the two driving rings (44) is installed in the shaft cylinder (42). A plurality of claw rods (46) are elastically rotatably connected to one end of the connection ring (45) located outside the shaft cylinder (42). An L-shaped groove is provided at the connection of the connection ring (45) and the claw rods (46). A pressure ring (49) is slidably inserted into the outer surface of the claw rods (46). An inner block (48) is fixed to the inner ring surface of the pressure ring (49). The pressure ring (49) is slidably inserted into the inner ring surface of the claw rods (46). The inner block (48) is elastically connected to the inside of the claw rods (46). A pull rope (410) is arranged inside the claw rods (46). One end of the pull rope (410) is fixed to the inner block (48). The other end of the pull rope (410) slidably penetrates the claw rods (46). The end of the pull rope (410) located outside the claw rods (46) slidably penetrates the outer ring surface of the connection ring (45). The end of the pull rope (410) located on the inner ring surface of the connection ring (45) is fixed to the driving ring (44).

2. The power cable stranding machine according to claim 1, characterized in that: A wire guiding structure (5) is installed at one end of the bifurcated frame (41); The wire guiding structure (5) includes two mutually contacting limiting wheels (51) and a passing cylinder (52). The limiting wheels (51) are located between the passing cylinder (52) and the bifurcated frame (41). The limiting wheels (51) are rotatably connected to the bifurcated frame (41). The passing cylinder (52) is fixed to the bifurcated frame (41).

3. The stranding machine for power cables according to claim 1, characterized in that: Orientation wheels (4101) are arranged in contact with both the part of the pull rope (410) located inside the connection ring (45) and the part of the pull rope (410) located inside the claw rods (46). The claw rods (46) and the connection ring (45) are respectively rotatably connected to the corresponding inner orientation wheels (4101).

4. The power cable stranding machine according to claim 1, characterized in that: The damping structure (43) includes an elastic damping piece (431) and a sleeve frame (432). One end of the sleeve frame (432) is rotatably sleeved on the outer surface of the shaft cylinder (42). The other end of the sleeve frame (432) is fixed to the bifurcated frame (41). Grooves are evenly opened on the outer ring surface at the connection of the shaft cylinder (42) and the bifurcated frame (41). One end of the elastic damping piece (431) is fixed to the sleeve frame (432). The other end of the elastic damping piece (431) is located inside the groove.

5. The power cable stranding machine according to claim 1, wherein: The transmission structure (47) includes a bidirectional threaded shaft (471), a driving bevel gear (472) and a driven bevel gear (473). The driving bevel gear (472) meshes with the lower side of the driven bevel gear (473). The shaft cylinder (42) is rotatably sleeved on both ends of the bidirectional threaded shaft (471) with damping. Two driving rings (44) inside the shaft cylinder (42) are respectively threadedly sleeved on both ends of the bidirectional threaded shaft (471). The driven bevel gear (473) is coaxially and fixedly sleeved on one end of the bidirectional threaded shaft (471) located outside the shaft cylinder (42). The bifurcated frame (41) is rotatably sleeved on the outer surface of the shaft rod of the driving bevel gear (472).

6. The power cable stranding machine according to claim 5, characterized in that: One end of the bifurcated frame (41) is rotatably connected with a damping telescopic transmission shaft (411). The damping telescopic transmission shaft (411) is chain-driven with the shaft rod of the driving bevel gear (472). One end of the damping telescopic transmission shaft (411) close to the main ring (2) is in the shape of a prism rod. A groove shaft (412) is coaxially arranged on one side of the damping telescopic transmission shaft (411) close to the axis of the main ring (2). One end of the groove shaft (412) away from the main ring (2) is in the shape of a prism groove matching the damping telescopic transmission shaft (411).

7. The power cable stranding machine according to claim 6, characterized in that: A bevel gear ring (413) is coaxially and rotatably sleeved on the outer surface of the main ring (2). A meshing bevel gear (414) is coaxially fixed at one end of the groove shaft (412) close to the main ring (2). The meshing bevel gear (414) meshes with the bevel gear ring (413).

8. A power cable stranding machine according to claim 1, characterized in that: One end of the pressing ring (49) close to the shaft cylinder (42) is protruded in a plate shape, and one side of the pressing ring (49) away from the shaft cylinder (42) is in a curved shape.

9. The power cable stranding machine according to claim 1, wherein: A plurality of claw rods (46) connected to the linkage ring (45) are circumferentially arrayed around the axis of the linkage ring (45). The connection part between the linkage ring (45) and the claw rod (46) is in a convex block shape, and the connection part between the shaft cylinder (42) and the convex block of the linkage ring (45) is in a long groove shape.

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