High-voltage oil temperature integrated steel core aluminum stranded wire stranding equipment
By using a high-pressure oil-temperature integrated stranding equipment to perform high-pressure heat treatment on aluminum strands, the problems of difficult deformation of aluminum strands and low production efficiency in traditional stranding equipment are solved, achieving stable stranding and high-efficiency production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGZHOUTONGGUANGHUAYIN WIRE CABLE CO LTD
- Filing Date
- 2026-05-13
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional steel-cored aluminum stranded wire production suffers from problems such as difficulty in deformation during stranding, work hardening, residual stress leading to structural instability, slow production cycle, high energy consumption, large footprint, and the risk of wire damage from repeated winding and unwinding, as well as poor batch consistency.
The high-pressure oil-temperature integrated stranding equipment uses a high-pressure heat treatment unit to uniformly heat the aluminum strands, allowing them to be stranded at the optimal plasticity temperature. This achieves constant-temperature stranding, releases stress, and improves the electrical and mechanical properties of the cable.
This achieves stable stranding of aluminum strands, preventing springback and loosening, improving the long-term operational stability and electromechanical performance of the cable, and reducing energy consumption and production costs.
Smart Images
Figure CN122201945A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of steel-cored aluminum stranded wire, specifically a high-pressure oil-temperature integrated steel-cored aluminum stranding device. Background Technology
[0002] Steel-cored aluminum stranded wire is mainly used in high-voltage transmission lines and urban power grids, effectively resisting wind loads and its own weight. The production of steel-cored aluminum stranded wire requires specialized stranding equipment to ensure the mechanical and electrical properties of the wire. Traditional techniques typically employ "cold working," leaving the aluminum stranded wire in a high-strength, low-plasticity state, making deformation difficult. This easily leads to work hardening and residual stress during stranding, resulting in unstable strand structure, loosening of strands, springback, and long-term stress corrosion and fatigue fracture. Furthermore, some stranding systems complete preheating, stranding, and subsequent annealing in different equipment, requiring multiple winding and unwinding operations and transfers of the aluminum stranded wire. This results in slow production cycles, high energy consumption, and large footprint. Additionally, multiple winding and unwinding operations can damage the wire, making temperature coordination between processes difficult and leading to poor batch consistency. Summary of the Invention
[0003] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure oil-temperature integrated steel-cored aluminum stranding device, comprising: A horizontal wire feeding machine has multiple wire feeding frames arranged around its internal circumference, and the wire feeding frames are arranged in a star shape. A rotating shaft seat is fixed at one end of a horizontal wire feeding machine. A wire shaft is rotatably connected inside the rotating shaft seat. Multiple inner guide holes and outer guide holes are distributed circumferentially on the wire shaft. An inner wire reel unit is rotatably connected to the side of the rotating shaft seat away from the horizontal wire feeding machine, and the inner wire reel unit is fixed to the wire shaft; A high-pressure heat treatment unit is installed on the side of the inner wire coil unit away from the rotating shaft seat; The outer wire reel unit is located on the side of the high-voltage heat treatment unit away from the inner wire reel unit. In the horizontal wire feeding machine, multiple aluminum stranded wires are distributed in a circle and pass through the conductor shaft, the inner wire reel unit, the high-voltage heat treatment unit and the outer wire reel unit in sequence. A stranding reel is located on the side of the horizontal wire feeding machine near the outer wire reel unit; The high-pressure heat treatment unit includes: The hydraulic cylinder is fixed to the rotating shaft seat by an external bracket; An oil guide seat is fixed to one end of the oil cylinder near the inner cable reel unit; The inner oil cylinder is rotatably and sealed within the oil cylinder. Multiple grooves are provided around the circumference of the inner oil cylinder, and both the inner and outer aluminum stranded wires are linearly transmitted within the grooves. The high-pressure oil chamber is centrally located inside the inner oil cylinder and is connected to each wire groove. An oil inlet pipe is vertically connected to the side wall of the oil cylinder. An annular oil groove is formed on the outer wall of the inner oil cylinder, and the annular oil groove is connected to the oil inlet pipe. The oil inlet channels are multiple and circumferentially distributed, with each oil inlet channel axially opened on the inner wall of the inner oil cylinder; There are multiple oil inlets arranged in a row, each of which is equidistant from the oil inlet channel and connected to the high-pressure oil chamber.
[0004] Furthermore, as a preferred embodiment, the inner wire disk unit and the outer wire disk unit have the same composition structure and are arranged in a mirror-symmetric manner; The inner guide hole is equipped with an inner layer of aluminum stranded wire, and the outer guide hole is equipped with an outer layer of aluminum stranded wire.
[0005] Furthermore, as a preferred embodiment, the external line disk unit includes: The central conduit is concentric with the guide shaft; A straightening wheel is fixed on a central guide tube. Multiple straightening holes are distributed around the inner circumference of the straightening wheel. The straightening holes are configured to correspond one-to-one with the inner guide hole and the outer guide hole. The tensioning disc is coaxially disposed on the side of the straightening wheel away from the high-pressure heat treatment unit, and the tensioning disc is slidably and adjustablely mounted on the central guide tube; The expansion disc is coaxially fixed on the side of the central guide tube away from the straightening wheel.
[0006] Furthermore, as a preferred embodiment, the inner oil cylinder has circumferential holes at both ends, which are connected to the grooves, and each circumferential hole is provided with an oil-separating rubber sleeve.
[0007] Furthermore, as a preferred embodiment, each of the wire grooves has a first protruding edge on its inner wall at the end, and the inner aluminum stranded wire is positioned in the wire groove by being limited by the first protruding edge, and a second protruding edge is provided in the middle of the wire groove; The inner oil cylinder has an annular drainage cavity, and each of the grooves has multiple conveying holes along its straight direction, and the conveying holes are connected to the annular drainage cavity.
[0008] Furthermore, as a preferred embodiment, a shaft end seat is rotatably mounted on one end of the cylinder away from the oil guide seat, and the two ends of the shaft end seat are respectively fixed to the outer coil unit and the inner oil cylinder; The inner oil cylinder is rotatably connected to a connecting shaft, and multiple guide shafts are arranged on the connecting shaft. Each guide shaft is rotatably connected to a guide impeller, and the guide shaft and the connecting shaft are eccentrically connected. The eccentric directions of two adjacent guide shafts are set in opposite directions; An internal motor is installed inside the shaft end seat, and the output end of the internal motor is connected to the connecting shaft for transmission through a gear meshing structure.
[0009] Furthermore, as a preferred embodiment, each of the guide impellers is arranged opposite to the plurality of conveying holes in the straight direction of the groove.
[0010] Furthermore, as a preferred embodiment, the inner oil cylinder has multiple oil discharge holes on its circumferential sidewall, the oil discharge holes being connected to the annular drainage chamber, and the inner wall of the oil cylinder near the shaft end seat having an annular flow channel, with each oil discharge hole being sealed and connected to the annular flow channel. A sealing joint is provided outside the oil cylinder, one end of which is connected to the circulation channel; and two oil return pipes are arranged in parallel on the oil cylinder, both of which are connected to the other end of the sealing joint. A preheating plate is rotatably connected inside the oil guide seat, and the two ends of the preheating plate are respectively fixed to the inner line disc unit and the inner oil cylinder; The preheating plate has a preheating cavity.
[0011] Furthermore, as a preferred embodiment, a sealing ring cavity is formed on the inner wall of the oil guide seat, and the other end of the oil return pipe is connected to the sealing ring cavity. Multiple diversion holes are distributed circumferentially on the preheating plate, and the sealing ring cavity is connected to the preheating cavity through each diversion hole. The oil guide seat has an oil drain hole, and an oil drain pipe is arranged parallel to the oil inlet pipe outside the oil cylinder. The oil drain pipe is connected to the oil drain hole through a segmented pipe.
[0012] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the steel-cored aluminum stranded wire stranding equipment employs an integrated high-pressure heat treatment unit to heat-treat the aluminum stranded wires transported in the inner coil unit using high-temperature, high-pressure hot oil. This uniformly heats the wires to a preset process temperature, achieving optimal plastic deformation and enabling constant-temperature stranding during subsequent stranding processes. This avoids internal stress caused by material temperature, enhances the tightness between wires, and thus improves the electrical and mechanical properties of the cable. Compared to traditional cold-working stranding, this invention can perform "hot working" at the optimal plastic temperature, releasing stress in real time. The finished cable stranded wire structure is extremely stable, with no risk of springback or loosening, and minimal deformation during long-term operation. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the external line disk unit in this invention; Figure 3 This is a schematic diagram of the internal structure of the high-pressure heat treatment unit in this invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the inner oil cylinder in this invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the guide impeller in this invention; Figure 7 This is a schematic diagram of the internal structure of the oil guide seat in this invention; In the diagram: 1. Horizontal wire feeding machine; 11. Shaft seat; 12. Conductor shaft; 13. Inner wire reel unit; 14. Outer guide hole; 15. Inner guide hole; 2. Outer wire reel unit; 21. Central guide tube; 22. Straightening wheel; 23. Straightening hole; 24. Tensioning disc; 25. Expanding disc; 3. High-pressure heat treatment unit; 31. Oil cylinder; 32. Inner oil cylinder; 33. High-pressure oil chamber; 34. Oil inlet pipe; 35. Circular oil groove; 36. Oil inlet channel; 37. Oil inlet. 38. Oil-separating sleeve; 39. Annular drain chamber; 310. Oil unloading hole; 311. Circulating channel; 4. Groove; 41. First protruding edge; 42. Second protruding edge; 43. Conveying hole; 5. Shaft end seat; 51. Connecting shaft; 52. Guide shaft; 53. Guide impeller; 6. Oil guide seat; 61. Preheating plate; 62. Preheating chamber; 63. Sealing ring cavity; 64. Diverting hole; 65. Oil drain hole; 66. Oil drain pipe; 7. Sealing joint; 71. Return oil pipe. Detailed Implementation
[0014] Please see Figures 1-7 In this embodiment of the invention, a high-pressure oil-temperature integrated steel-cored aluminum stranding device includes: A horizontal wire feeding machine 1 has multiple wire feeding frames arranged around its internal circumference. The wire feeding frames are arranged in a star-shaped pattern, and aluminum stranded wire is wound and transmitted on each wire feeding frame. A rotating shaft seat 11 is fixed at one end of a horizontal wire feeding machine 1. A wire shaft 12 is rotatably connected inside the rotating shaft seat 11. A plurality of inner guide holes 15 and outer guide holes 14 are distributed around the circumference of the wire shaft 12. The wire shaft 12 can rotate synchronously with the winding shaft in the horizontal wire feeding machine 1 to realize the stranding operation of aluminum stranded wire. The inner wire reel unit 13 is rotatably connected to the side of the rotating shaft seat 11 away from the horizontal wire feeding machine 1, and the inner wire reel unit 13 is fixed to the wire shaft 12; The high-pressure heat treatment unit 3 is installed on the side of the inner wire coil unit 13 away from the rotating shaft seat 11; The outer wire reel unit 2 is located on the side of the high-voltage heat treatment unit 3 away from the inner wire reel unit 13. In the horizontal wire feeding machine 1, multiple aluminum stranded wires are distributed in a circle and pass through the conductor shaft 12, the inner wire reel unit 13, the high-voltage heat treatment unit 3 and the outer wire reel unit 2 in sequence. A stranding disc (not shown in the figure) is set on the side of the horizontal wire feeding machine 1 near the outer wire reel unit 2. The aluminum stranded wire conveyed in the outer wire reel unit 2 can be stranded at a constant temperature in a timely manner on the stranding disc, thereby eliminating the stress generated during the stranding process and achieving tight pressing of the aluminum stranded wire surface.
[0015] In this embodiment, the inner wire disk unit 13 and the outer wire disk unit 2 have the same composition structure and are arranged in a mirror symmetrical manner. The inner guide hole 15 carries an inner layer of aluminum stranded wire, and the outer guide hole 14 carries an outer layer of aluminum stranded wire. In addition, a high-strength steel wire is carried in the center of the horizontal wire feeding machine 1 as a load-bearing core. The inner and outer aluminum stranded wires form a composite wire body, which is wound on the high-strength steel wire. The center of the high-strength steel wire passes through the inner wire reel unit 13, the high-pressure heat treatment unit 3, and the outer wire reel unit 2.
[0016] In a preferred embodiment, the external line panel unit 2 includes: The central conduit 21 is concentric with the conductor shaft 12; the central conduit 21 in the inner coil unit 13 is fixed to the conductor shaft 12 and rotates continuously with the conductor shaft 12, while the central conduit 21 in the outer coil unit 2 is connected to the central conduit 21 in the inner coil unit 13 through the high-pressure heat treatment unit 3. A straightening wheel 22 is fixed on a central guide tube 21. Multiple straightening holes 23 are distributed around the inner circumference of the straightening wheel 22. The straightening holes 23 are arranged in a one-to-one correspondence with the inner guide hole 15 and the outer guide hole 14. The tensioning disc 24 is coaxially disposed on the side of the straightening wheel 22 away from the high-pressure heat treatment unit 3. The tensioning disc 24 is slidably and adjustablely mounted on the central guide tube 21. A threaded groove can be opened on the surface of the central guide tube 21, and threaded sleeves are symmetrically arranged on both sides of the tensioning disc 24. The threaded sleeves are threadedly slidably connected to the central guide tube 21, thereby using the two threaded sleeves to slide and position the tensioning disc 24. The expansion disc 25 is coaxially fixed on the central guide tube 21 away from the straightening wheel 22.
[0017] In this embodiment, the high-pressure heat treatment unit 3 includes: The hydraulic cylinder 31 is fixed to the rotating shaft seat 11 by an outer bracket (not shown in the figure), and the hydraulic cylinder 31 remains stationary during the winding operation; Oil guide seat 6 is fixed to one end of the oil cylinder 31 near the inner cable reel unit 13; The inner oil cylinder 32 is rotatably and sealed within the oil cylinder 31. Multiple wire grooves 4 are provided around the circumference of the inner oil cylinder 32, and the inner and outer aluminum stranded wires are linearly transmitted within the wire grooves 4. The high-pressure oil chamber 33 is centrally located inside the inner oil cylinder 32, and the high-pressure oil chamber 33 is connected to each wire groove 4; An oil inlet pipe 34 is vertically connected to the side wall of the oil cylinder 31. An annular oil groove 35 is provided on the outer wall of the inner oil cylinder 32. The annular oil groove 35 is connected to the oil inlet pipe 34. A hot oil pump is connected to the outside of the oil inlet pipe 34, which can deliver hot oil to the oil inlet pipe 34. The hot oil can flow into the annular oil groove 35 through the oil inlet pipe 34. The oil inlet channels 36 are multiple and circumferentially distributed. Each oil inlet channel 36 is axially opened on the inner wall of the inner oil cylinder 32. One end of each oil inlet channel 36 is connected to the annular oil groove 35, so that the hot oil flowing in the annular oil groove 35 can flow evenly into each oil inlet channel 36. Multiple oil inlet holes 37 are arranged in a row, with each oil inlet hole 37 equidistantly distributed along the oil inlet channel 36 and connected to the high-pressure oil chamber 33. This arrangement ensures that the hot oil flowing in each oil inlet channel 36 can enter the high-pressure oil chamber 33 through each oil inlet hole 37, ensuring that the hot oil can be injected into the core working area uniformly and synchronously from multiple points in the circumferential direction and multiple positions in the axial direction of the inner oil cylinder 32. This achieves a stable thermal field with uniform temperature and pressure in three dimensions within the high-pressure oil chamber 33. The hot oil in the high-pressure oil chamber 33 can enter the wire groove 4 during its flow, thereby heat-treating the inner and outer aluminum stranded wires transmitted in the wire groove 4. The length of the wire groove 4 is not less than 1.2m, which provides sufficient "immersion" heating time for the inner and outer aluminum stranded wires, allowing the heat to be fully conducted from the surface of the wire to the core. This ensures that the radial temperature of the entire wire cross-section is completely uniform, and the whole wire reaches the preset optimal plastic temperature. This is the fundamental guarantee for achieving "stress-free" stranding.
[0018] In this embodiment, the inner oil cylinder 32 has circumferential holes at both ends of its axial direction. The circumferential holes are connected to the wire groove 4. Each circumferential hole is provided with an oil-separating sleeve 38. The inner aluminum stranded wire and the outer aluminum stranded wire are transmitted in the circumferential holes. The oil-separating sleeve 38 can effectively prevent hot oil from leaking from the inner oil cylinder 32 and improve the sealing performance.
[0019] In this embodiment, each of the wire grooves 4 has a first protrusion 41 on the inner wall of its end. The inner aluminum stranded wire is limited and disposed in the wire groove 4 by the first protrusion 41. The middle part of the wire groove 4 has a second protrusion 42. The outer aluminum stranded wire is limited and disposed in the wire groove 4 by the second protrusion 42. The inner oil cylinder 32 has an annular drainage chamber 39, and each of the wire grooves 4 has multiple conveying holes 43 along its straight direction. The conveying holes 43 are connected to the annular drainage chamber 39. Specifically, after the hot oil in the high-pressure oil chamber 33 enters the wire groove 4 and fully impregnates the aluminum stranded wire, it can flow into the annular drainage chamber 39 through the multiple conveying holes 43, so as to realize the continuous flow and liquid exchange of hot oil in the high-pressure oil chamber 33 and ensure the heat treatment effect.
[0020] In a preferred embodiment, a shaft end seat 5 is rotatably mounted on one end of the cylinder 31 away from the oil guide seat 6, and the two ends of the shaft end seat 5 are respectively fixed to the outer coil unit 2 and the inner oil cylinder 32; The inner oil cylinder 32 is rotatably connected to a connecting shaft 51, and multiple guide shafts 52 are arranged on the connecting shaft 51. Each guide shaft 52 is rotatably connected to a guide impeller 53, which can roll contact with the inner wall of the inner oil cylinder 32. The guide shaft 52 and the connecting shaft 51 are eccentrically arranged. The eccentric directions of two adjacent guide shafts 52 are opposite; An internal motor (not shown in the figure) is installed inside the shaft end seat 5. The output end of the internal motor is connected to the connecting shaft 51 through a gear meshing structure. With this configuration, when the internal motor is working, it can realize the continuous rotational motion of the connecting shaft 51 relative to the inner oil cylinder 32. When the connecting shaft 51 rotates, the axially distributed guide shafts 52 rotate synchronously around the connecting shaft 51. The guide impeller 53 rolls and contacts the inner wall of the inner oil cylinder 32, thereby squeezing the hot oil in the inner oil cylinder 32 into each wire groove 4 under high pressure. This ensures that the hot oil can penetrate all surfaces of each aluminum strand. The operator can independently adjust the rotation speed of the connecting shaft 51 according to the wire specifications (such as diameter and number of strands), oil characteristics, and target temperature, thereby independently controlling the oil flow speed and pressure squeezed into the wire groove 4 and finding the optimal heat exchange and flow matching point. This can solve the problems of "dead oil zone" formed by the deep part of the wire groove 4 (especially the groove that contains multiple aluminum strands) or the micro gaps between the wires, which are caused by the natural penetration of oil pressure in traditional technology, resulting in poor local heat exchange. Additionally, it should be noted that the connecting shaft 51 is a hollow tube structure, with the high-strength steel wire passing through the connecting shaft 51 and entering the central conduit 21 in the outer wire coil unit 2.
[0021] In this embodiment, each of the guide impellers 53 is arranged opposite to the multiple conveying holes 43 in the straight direction of the groove 4, that is, a single guide impeller 53 corresponds to a set of conveying holes 43 in the axial direction. In this way, the multiple guide impellers 53 can squeeze hot oil into each conveying hole 43 during operation, and the hot oil flows into the annular drainage chamber 39 through the conveying holes 43.
[0022] In this embodiment, a plurality of oil discharge holes 310 are provided on the circumferential sidewall of the inner oil cylinder 32. The oil discharge holes 310 are connected to the annular drainage chamber 39, and an annular flow channel 311 is provided on the inner wall of the oil cylinder 31 near the shaft end seat 5. Each of the oil discharge holes 310 is sealed and connected to the annular flow channel 311. With this arrangement, the hot oil entering the annular drainage chamber 39 can flow into the annular flow channel 311 through each oil discharge hole 310. A sealing joint 7 is provided on the outside of the oil cylinder 31. One end of the sealing joint 7 is connected to the circulation channel 311. Two oil return pipes 71 are arranged in parallel on the oil cylinder 31. Both oil return pipes 71 are connected to the other end of the sealing joint 7. A preheating disc 61 is rotatably connected inside the oil guide seat 6. The two ends of the preheating disc 61 are fixed to the inner wire coil unit 13 and the inner oil cylinder 32, respectively. The preheating disc 61, the inner oil cylinder 32, the shaft end seat 5, and the outer wire coil unit 2 rotate synchronously with the inner wire coil unit 13. The preheating plate 61 has a preheating chamber 62, which can preheat the aluminum stranded wire. The aluminum stranded wire first enters the preheating chamber 62 from the inner wire reel unit 13, where it is gently and evenly heated to an intermediate temperature (e.g., from 20°C to 150°C) before entering the high-pressure oil chamber at a higher temperature (e.g., 200°C).
[0023] In this embodiment, a sealing ring cavity 63 is provided on the inner wall of the oil guide seat 6, and the other end of the oil return pipe 71 is connected to the sealing ring cavity 63. Multiple diversion holes 64 are distributed circumferentially on the preheating plate 61, and the sealing ring cavity 63 is connected to the preheating cavity 62 through each diversion hole 64. That is to say, in this invention, hot oil first enters the high-pressure oil cavity 33 through the oil inlet pipe 34, and after heat treatment of each aluminum strand, it is discharged to the annular drain cavity 39 through multiple conveying holes 43. Then, the hot oil flows into the two oil return pipes 71 through the sealing joint 7. The oil return pipes 71 send the hot oil into the preheating cavity 62 through the sealing ring cavity 63, so that the aluminum strand can be preheated using low-temperature hot oil. This utilizes waste heat and reduces the energy consumption of the cooling system, achieving dual energy saving. In addition, the heat source of the preheating cavity 62 comes from the return oil of the main system, and its temperature is directly related to the operating conditions of the main system. When the main system temperature changes due to process adjustments, the preheating temperature will automatically follow, forming an adaptive, internally coupled temperature chain, which improves the coordination and stability of the entire heating process. The oil guide seat 6 is provided with an oil drain hole 65, and an oil drain pipe 66 is provided parallel to the oil cylinder 31 below the oil inlet pipe 34. The oil drain pipe 66 is connected to the oil drain hole 65 through a segment pipe, so that the low temperature hot oil is finally discharged and collected through the oil drain pipe 66.
[0024] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A high-pressure oil-temperature integrated steel-cored aluminum stranding device, characterized in that, include: A horizontal wire feeding machine (1) has multiple wire feeding frames arranged around its internal circumference, and the wire feeding frames are arranged in a star-shaped arrangement. A rotating shaft seat (11) is fixed at one end of a horizontal wire feeding machine (1). A wire shaft (12) is rotatably connected inside the rotating shaft seat (11). A plurality of inner guide holes (15) and outer guide holes (14) are distributed around the circumference of the wire shaft (12). The inner wire reel unit (13) is rotatably connected to the side of the rotating shaft seat (11) away from the horizontal wire feeding machine (1), and the inner wire reel unit (13) is fixed to the wire shaft (12); A high-pressure heat treatment unit (3) is installed on the side of the inner wire coil unit (13) away from the rotating shaft seat (11); The outer wire reel unit (2) is located on the side of the high-voltage heat treatment unit (3) away from the inner wire reel unit (13). In the horizontal wire feeding machine (1), multiple aluminum stranded wires are distributed in a circle and pass through the conductor shaft (12), the inner wire reel unit (13), the high-voltage heat treatment unit (3) and the outer wire reel unit (2) in sequence. A stranding reel is located on the side of the horizontal wire feeding machine (1) near the outer wire reel unit (2); The high-pressure heat treatment unit (3) includes: The hydraulic cylinder (31) is fixed to the rotating shaft seat (11) by means of an outer bracket; Oil guide seat (6), which is fixed to one end of the oil cylinder (31) near the inner cable reel unit (13); The inner oil cylinder (32) is rotatably and sealed within the oil cylinder (31) in a concentric circle. Multiple wire grooves (4) are provided around the circumference of the inner oil cylinder (32), and the inner and outer aluminum stranded wires are transmitted in a straight line within the wire grooves (4). The high-pressure oil chamber (33) is centrally located inside the inner oil cylinder (32), and the high-pressure oil chamber (33) is connected to each wire groove (4); An oil inlet pipe (34) is vertically connected to the side wall of the oil cylinder (31). An annular oil groove (35) is provided on the outer wall of the inner oil cylinder (32), and the annular oil groove (35) is connected to the oil inlet pipe (34). The oil inlet channels (36) are multiple and circumferentially distributed, and each oil inlet channel (36) is axially opened on the inner wall of the inner oil cylinder (32); There are multiple oil inlet holes (37) arranged in a row. Each oil inlet hole (37) is equidistantly distributed along the oil inlet channel (36) and is connected to the high-pressure oil chamber (33).
2. The high-pressure oil-temperature integrated steel-cored aluminum stranding equipment according to claim 1, characterized in that: The inner wire disk unit (13) has the same composition structure as the outer wire disk unit (2), and they are arranged in a mirror symmetrical manner; The inner guide hole (15) is provided with an inner layer of aluminum stranded wire, and the outer guide hole (14) is provided with an outer layer of aluminum stranded wire.
3. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 2, characterized in that, The external line disk unit (2) includes: The central catheter (21) is concentric with the guide shaft (12); A straightening wheel (22) is fixed on a central guide tube (21). The straightening wheel (22) has multiple straightening holes (23) distributed around its inner circumference. The straightening holes (23) are arranged in a one-to-one correspondence with the inner guide hole (15) and the outer guide hole (14). The tensioning disc (24) is coaxially disposed on the side of the straightening wheel (22) away from the high-pressure heat treatment unit (3), and the tensioning disc (24) is slidably and adjustablely mounted on the central guide tube (21); The expansion disc (25) is coaxially fixed on the side of the central guide tube (21) away from the straightening wheel (22).
4. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 1, characterized in that: The inner oil cylinder (32) has circumferential holes at both ends, which are connected to the groove (4). Each circumferential hole is equipped with an oil-separating rubber sleeve (38).
5. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 1, characterized in that: Each of the wire grooves (4) has a first protruding edge (41) on the inner wall of its end. The inner aluminum stranded wire is positioned in the wire groove (4) by the first protruding edge (41). The middle part of the wire groove (4) has a second protruding edge (42). The inner oil cylinder (32) has an annular drainage cavity (39) and each of the grooves (4) has multiple conveying holes (43) along its straight direction. The conveying holes (43) are connected to the annular drainage cavity (39).
6. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 5, characterized in that: A shaft end seat (5) is rotatably mounted on one end of the oil cylinder (31) away from the oil guide seat (6). The two ends of the shaft end seat (5) are respectively fixed to the outer coil unit (2) and the inner oil cylinder (32). The inner oil cylinder (32) is rotatably connected to a connecting shaft (51), and multiple guide shafts (52) are arranged on the connecting shaft (51). Each guide shaft (52) is rotatably connected to a guide impeller (53). The guide shaft (52) and the connecting shaft (51) are eccentrically connected. The eccentric directions of two adjacent guide shafts (52) are opposite; The shaft end seat (5) is equipped with a built-in motor, and the output end of the built-in motor is connected to the connecting shaft (51) for transmission through a gear meshing structure.
7. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 6, characterized in that: Each of the guide vanes (53) and the multiple conveying holes (43) in the straight direction of the groove (4) are arranged opposite to each other.
8. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 6, characterized in that: The inner oil cylinder (32) has multiple oil discharge holes (310) on its circumferential sidewall. The oil discharge holes (310) are connected to the annular drainage chamber (39). The inner wall of the oil cylinder (31) near the shaft end seat (5) has an annular flow channel (311). Each oil discharge hole (310) is sealed and connected to the annular flow channel (311). A sealing joint (7) is provided outside the oil cylinder (31), one end of which is connected to the circulation channel (311); and two oil return pipes (71) are arranged in parallel on the oil cylinder (31), and the oil return pipes (71) are connected to the other end of the sealing joint (7). The oil guide seat (6) is rotatably connected to a preheating plate (61), and the two ends of the preheating plate (61) are respectively fixed to the inner wire coil unit (13) and the inner oil cylinder (32); A preheating cavity (62) is provided inside the preheating plate (61).
9. The high-pressure oil-temperature integrated steel-cored aluminum stranding device according to claim 8, characterized in that: The inner wall of the oil guide seat (6) is provided with a sealing ring cavity (63), and the other end of the oil return pipe (71) is connected to the sealing ring cavity (63). The preheating plate (61) has multiple diversion holes (64) distributed around its circumference. The sealing ring cavity (63) is connected to the preheating cavity (62) through each diversion hole (64). The oil guide seat (6) is provided with an oil drain hole (65), and an oil drain pipe (66) is provided parallel to the oil inlet pipe (34) outside the oil cylinder (31). The oil drain pipe (66) is connected to the oil drain hole (65) through a pipe section.