Method and device for preparing steel wire aluminum-clad layer through induction heating

Abstract

The invention discloses a method and device for preparing a steel wire aluminum-clad layer through induction heating, and belongs to the field of steel wire armoring. The device comprises a first fixing piece, a second fixing piece is arranged on one side of the first fixing piece, and an induction coil used for heating is arranged between the first fixing piece and the second fixing piece; a wrapping part for wrapping the steel stranded wire with an aluminum layer is arranged in the middle of the induction coil, a moving part is installed below the wrapping part, a first lead screw and a second lead screw which are symmetrical to each other are arranged above the middle of the first fixing part and the middle of the second fixing part, and the first fixing part and the second fixing part each comprise an upper fixing frame. According to the scheme, through the arrangement of the first fixing piece and the second fixing piece, the device can directly coat the damaged cable with an aluminum layer without taking down the cable with the damaged outer coating layer, and tests whether the resistance value is qualified or not after coating is completed; and high efficiency and stability of coating are ensured.

Description

Technical Field

[0001] The present invention relates to the field of steel wire armoring, and more particularly to a method and device for preparing an aluminum-clad layer of a steel wire by induction heating. Background Art

[0002] As a global advocate and leader in long-distance ultra-high voltage transmission and transformation technology, China continues to promote the development of key materials and core processes. Aluminum-clad steel wire is a composite conductor material made of high-strength steel as a core and aluminum as a cladding, produced through an extrusion process. It combines the high tensile strength of steel with the excellent conductivity of aluminum. It has been widely used in power systems, particularly as a reinforcing core material in aluminum-clad steel stranded ground wire, optical fiber composite overhead ground wire, and aluminum-clad steel core aluminum stranded wire. In the power transmission and communications sectors, steel-wire aluminum-clad cables are widely used due to their excellent mechanical strength and electrical conductivity. These cables typically use a high-strength steel wire as a core, coated with a highly conductive aluminum layer to provide both tensile strength and electrical conductivity. However, in actual use, the aluminum layer may be partially damaged due to mechanical wear, environmental corrosion, or long-term fatigue, which can affect the cable's electrical conductivity, corrosion resistance, and service life. Traditional methods of repairing damaged aluminum layers mainly include the following two methods: overall cable replacement: the damaged cable section is removed and replaced with a new cable; this method is costly and has a long construction period, especially for cables laid over long distances or in complex environments (such as underground, high altitude, etc.), the project is difficult; local welding or cold pressing repair: fill the damaged area of the aluminum layer by welding or mechanical crimping; but welding can easily damage the steel wire core or insulation material due to high temperature, and the interface bonding strength of cold pressing repair is low, which may cause secondary shedding or increased contact resistance.

[0003] In view of this, and in response to the above-mentioned deficiencies, the present invention has developed a method and apparatus for preparing an aluminum-clad steel wire layer by induction heating. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a method and device for preparing aluminum-clad steel wire using induction heating, which can achieve the goal of re-cladding the aluminum layer in the original position without removing or cutting the damaged cable.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A method and apparatus for preparing an aluminum-clad steel wire using induction heating, comprising a first fixing member, a second fixing member disposed on one side of the first fixing member, an induction coil for heating disposed between the first and second fixing members, a covering member disposed in the middle of the induction coil for covering the steel strands with aluminum, a movable member mounted below the covering member, and first and second lead screws disposed symmetrically above and between the first and second fixing members. The second fixing member is a member of a pair of brackets, wherein the first fixing member and the second fixing member are connected to each other with a bolt, and the bolt has a round shank to contact with the first fixing member.

[0007] The lockhole that is formed on the upper of the two said the two said the two said the two said the two said the two second end are connected with each other with a up-down knob, on which the locking bolt is connected, and the locking bolt has a round shank to contact with the locking bolt.

[0008] Furthermore, the covering component includes an upper ceramic sleeve, a lower ceramic sleeve symmetrical to the upper ceramic sleeve is provided below the upper ceramic sleeve, and the internal parts of the upper ceramic sleeve and the lower ceramic sleeve are spliced to form a closed chamber, and the upper ceramic sleeve and the lower ceramic sleeve are both rotatably installed with a first locking member on the side away from the first fixing member, and the upper ceramic sleeve and the lower ceramic sleeve are both rotatably installed with a second locking member on the side close to the first fixing member. The two first locking members are fixed by screws, and the two second locking members are also fixed by screws. A plurality of evenly distributed arc plates are fixedly installed inside the closed chamber formed by the upper ceramic sleeve and the lower ceramic sleeve, and the arc plates are used to stir the molten liquid aluminum toward the middle.

[0009] The cam is secured to a position 56° to the first and second locking members, and the cam is secured to a position 56° to the second end of the first gear and a cam is secured to the second end of the second gear.

[0010] Furthermore, the first gear set includes a first ring gear, which is rotatably mounted on the first side plate, a first sun gear is provided in the middle of the first ring gear, and the first sun gear is fixedly mounted on the first side plate. A first planetary carrier is provided on the side of the first ring gear close to the second gear set, and a plurality of first planetary gears are rotatably mounted on the first planetary carrier, and the first planetary gears are meshed with the first ring gear and the first sun gear, and the first ring gear is tightly fitted with the surface of the lower ceramic sleeve, and the second gear set includes a second ring gear, which is fixedly mounted on the second side plate, a second sun gear is provided in the middle of the second ring gear, and the second sun gear is rotatably mounted on the second side plate, a second planetary carrier is provided on the side of the second ring gear close to the first gear set, and a plurality of evenly distributed second planetary gears are rotatably mounted on the second planetary carrier, and the second planetary gears are meshed with the second ring gear and the second sun gear, and the first planetary carrier and the second planetary carrier are both fixedly mounted on the middle of the first worm gear.

[0011] Furthermore, two symmetrical sliding sleeves are fixedly installed on the induction coil, and the two sliding sleeves are respectively sleeved on the outside of the corresponding first screw rod and second screw rod. A connecting sleeve is fixedly installed on the side of the second side plate close to the first screw rod, and the connecting sleeve is rotatably installed on the outside of one of the sliding sleeves.

[0012] Furthermore, a first transmission wheel is provided on the side of the second side plate away from the first side plate, the first transmission wheel is fixedly connected to the second sun gear, and a plurality of evenly distributed second transmission wheels are rotatably installed on the second side plate through a bracket. The plurality of second transmission wheels and the first transmission wheel are located on the same horizontal plane, and a transmission belt is used for transmission between the plurality of second transmission wheels and the first transmission wheel.

[0013] Furthermore, a winding component for wrapping an insulating layer is provided on the side of the covering component close to the first fixing component, and the winding component includes a fixed bracket, a C-shaped slide rail is fixedly installed on the fixed bracket, a C-shaped rotating wheel is rotatably installed on the side of the C-shaped slide rail close to the first fixing component, the transmission belt is transmitted to the lower end of the C-shaped rotating wheel, and an insulating film is detachably installed on the side of the C-shaped rotating wheel away from the C-shaped slide rail.

[0014] Furthermore, a second worm wheel is engaged below the worm, and the second worm wheel is rotatably mounted on the movable frame through a bracket. A third screw rod is provided between the first fixing member and the second fixing member, and one end of the third screw rod close to the first fixing member is fixedly mounted on the support frame corresponding to the first fixing member, and one end of the third screw rod close to the second fixing member slides through the support frame corresponding to the second fixing member, and the second worm wheel is sleeved on the outside of the third screw rod through a threaded fitting, and a turning handle is fixedly mounted on one end of the worm.

[0015] A method for preparing an aluminum-clad steel wire layer by induction heating, using an apparatus for preparing an aluminum-clad steel wire layer by induction heating, comprising the following steps: S1. Use a cutter to remove the insulation layer around the damaged area, then clean the coated area and clean the area of the steel wire to be coated to remove impurities and oxide layer; S2. Preparation of aluminum sheet: clean the aluminum sheet to be coated to remove impurities and oxide layer, and evenly wrap the aluminum layer on the area to be coated on the steel wire; S3. Preparation for clamping: first open the first and second fixing members, clamp the aluminum-wrapped steel wire with the upper and lower ceramic sleeves, then tighten the screws on the first and second locking members. The first and second locking members have patterns that match the steel strands to clamp the exposed steel strands. At this time, the upper and lower ceramic sleeves are locked to form a closed chamber, and then close the first and second fixing members. S4, induction pressure coating, the clamped sample will be placed in the induction coil, and the mold will be induction heated to the hot melt temperature. At this time, the moving part will drive the upper ceramic sleeve and the lower ceramic sleeve to rotate rapidly. During the rotation, the moving part can also drive the induction coil, the coating part, and the winding part to move at a constant speed on the slide bar. The two first locking parts and the two second locking parts can also rotate slowly along the grain of the steel wire strand while being driven forward at a constant speed. S5. Sample processing after coating: During the movement, the cooling grooves on the two second locking members can make the aluminum layer cool quickly to form armor, and can be squeezed by the two second locking members on the surface of the steel wire strand to form a uniform armor layer.

[0016] S6. When moving at a constant speed, the winding component can insulate the area where the armor has been completed, and wrap the insulation layer on its surface to complete the overall maintenance work.

[0017] S7. Data processing: After the test is completed, the resistance value of the tested sample is directly output. Since the lengths of the tested samples vary, which affects the comparison of the steel wire performance, the resistance values of all steel wires are uniformly converted to the resistance at a length of 1 meter as shown in formula (1). The measured resistance is converted to conductivity as shown in formula (2). Then, the measurement is completed to ensure that the resistance value after repair meets the standard.

[0018] (1) (2) In the formula: σ is conductivity, ρ is resistivity, L is the actual measured length of the steel wire, R is the resistance value, and A is the cross-sectional area of the steel wire.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution provides a first fixing member and a second fixing member, so that the device can directly cover the damaged cable with an aluminum layer without removing the outer covering layer of the cable, and test the resistance value after the covering is completed to ensure the efficiency and stability of the covering.

[0020] 2. This solution provides a covering component, which can drive the upper and lower ceramic sleeves to rotate at high speed when in stable movement, thereby evenly wrapping the liquid aluminum on the surface of the steel wire strand.

[0021] 3. This solution prevents the cable from being damaged by tension due to heating by changing the distance between the first fixing member and the second fixing member. It can also cause the strands of the steel wire strands in the area to be covered to explode, further improving the comprehensiveness of the covering.

[0022] 4. This solution provides a winding component so that it can wrap the cooled cable with an insulation layer during continuous movement, reducing the tedious manual wrapping work of workers in the later stage and improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 This is a schematic diagram of the connection structure of the first fixing member and the second fixing member in the present invention; Figure 3 Schematic diagram of the structure of the first fixing member in the present invention; Figure 4 Schematic diagram of the connection structure of the induction coil, the covering component, and the moving component in the present invention; Figure 5 Schematic diagram of the structure of the covering component in the present invention; Figure 6 Schematic diagram of the cross-section structure of the upper ceramic sleeve and the lower ceramic sleeve in the present invention; Figure 7 It is a structural schematic diagram of the moving parts in the present invention; Figure 8 A schematic diagram of the structure of the first gear set and the second gear set in the present invention; Figure 9 It is a structural schematic diagram of the winding component in the present invention.

[0024] Description of the numbers in the figure: 1. First fixing member; 2. Second fixing member; 3. Induction coil; 4. Covering member; 5. Moving member; 6. Winding member; 7. First screw rod; 8. Sliding rod; 11. Upper fixing frame; 12. Lower fixing frame; 13. First connecting frame; 14. Second connecting frame; 15. Third connecting frame; 16. Fourth connecting frame; 17. Support frame; 31. Sliding sleeve; 41. Upper ceramic sleeve; 42. Lower ceramic sleeve; 43. First locking member; 44. Second locking member; 51. Moving frame; 52. First side plate; 53. Second side plate; 54. First gear set; 55. Second gear set; 61. Fixed bracket; 62. C-shaped slide rail; 63. C shaped rotating wheel; 64, insulating film; 71, second screw rod; 72, third screw rod; 111, first screw rod; 112, upper fixing plate; 121, second screw rod; 122, lower fixing plate; 141, spherical bump; 411, arc plate; 511, worm; 512, first worm gear; 513, second worm gear; 514, turning handle; 531, semicircular bracket; 532, connecting sleeve; 533, first transmission wheel; 534, second transmission wheel; 535, transmission belt; 541, first ring gear; 542, first sun gear; 543, first planetary carrier; 551, second ring gear; 552, second sun gear; 553, second planetary carrier. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 9 A device for preparing an aluminum-clad layer of steel wire by induction heating includes a first fixing part 1, a second fixing part 2 is provided on one side of the first fixing part 1, an induction coil 3 for heating is provided between the first fixing part 1 and the second fixing part 2, a covering component 4 for covering the steel wire strand with an aluminum layer is provided in the middle of the induction coil 3, a moving part 5 is installed below the covering component 4, a first screw rod 7 and a second screw rod 71 are symmetrical to each other at a position above the middle of the first fixing part 1 and the second fixing part 2, a winding component 6 for wrapping an insulating layer is provided on the side of the covering component 4 close to the first fixing part 1, a plurality of evenly distributed sliding rods 8 are provided at a position below the middle of the first fixing part 1 and the second fixing part 2, and a third screw rod 72 is provided between the first fixing part 1 and the second fixing part 2.

[0027] During actual use, first open the first fixing member 1 and the second fixing member 2, at this time the induction coil 3 is driven to lift up, and then the covering part 4 is disassembled, the aluminum sheet is evenly wound on the steel wire strand, and then the covering part 4 is used to clamp it, and then the covering part 4 is locked, and then the first fixing member 1 and the second fixing member 2 are closed, and the first screw rod 7 and the second screw rod 71 can be rotated to change the distance between the first fixing member 1 and the second fixing member 2. At this time, the induction coil 3 works to heat the aluminum sheet and the steel wire inside the covering part 4, so that the aluminum sheet is heated and melted, and the steel wire will fit better with the liquid aluminum after being heated. At the same time, the covering part 4 is driven to rotate by the moving part 5, and the covering part 4 inside The liquid aluminum is stirred during the rotation process to fit more completely to each steel wire in the steel wire strand, and the moving part 5 can continue to move forward while driving the covering part 4 to rotate. The liquid aluminum inside the covering part 4 can continuously cover the moved area with an aluminum layer. At the same time, during the movement, the covering part 4 can also cool the wrapped steel wire strand, and can scrape off the excess aluminum and continue to heat and melt it to prevent the occurrence of uneven aluminum layer. When the moving part 5 moves, it can also drive the winding part 6 to move, and the winding part 6 can insulate the wrapped area when moving, and the winding part 6 can evenly wrap the insulating tape around the armored area.

[0028] The first fixing member 1 and the second fixing member 2 both include an upper fixing frame 11, a lower fixing frame 12 symmetrical to itself is provided below the upper fixing frame 11, a first connecting frame 13 and a second connecting frame 14 are fixedly installed on both sides of the upper fixing frame 11, a third connecting frame 15 is fixedly installed on the side of the lower fixing frame 12 corresponding to the first connecting frame 13, and a fourth connecting frame 16 is fixedly installed on the side of the lower fixing frame 12 corresponding to the second connecting frame 14. The first connecting frame 13 and the third connecting frame 15 are hinged, and the first screw rod 7 is close to one end of the first fixing member 1 The first connecting frame 13 and the third connecting frame 15 are rotatably mounted on the first fixing member 1, and the end of the first screw rod 7 away from the first fixing member 1 is fixed to the hinge of the first connecting frame 13 and the third connecting frame 15 corresponding to the second fixing member 2 through threaded engagement. The end of the second screw rod 71 close to the first fixing member 1 is rotatably mounted on the second connecting frame 14 corresponding to the first fixing member 1, and the end of the second screw rod 71 close to the second fixing member 2 is fixed to the middle of the second connecting frame 14 corresponding to the second fixing member 2 through threaded engagement. The bottom of the lower fixing frame 12 The end of the slide rod 8 is fixedly installed with a support frame 17, the end of the slide rod 8 close to the first fixing member 1 is fixedly installed on the support frame 17 corresponding to the first fixing member 1, and the end of the slide rod 8 close to the second fixing member 2 slides through the lower end of the support frame 17 corresponding to the second fixing member 2. A plurality of evenly distributed first screws 111 are rotatably installed on the upper fixing frame 11, and a plurality of evenly distributed second screws 121 are rotatably installed on the lower fixing frame 12. A Z-shaped incision is formed between the first screw 111 and the corresponding second screw 121. An upper fixing plate is provided below the upper fixing frame 11 112, multiple upper fixing frames 11 are fixed on the upper fixing plate 112 by threaded clamps, a lower fixing plate 122 is provided above the lower fixing frame 12, multiple second screws 121 are fixed on the lower fixing plate 122 by threaded clamps, and multiple evenly distributed spherical bumps 141 are provided on both sides of the second connecting frame 14. A groove corresponding to the second connecting frame 14 is opened on the inner side of the fourth connecting frame 16, and two symmetrical sliding sleeves 31 are fixedly installed on the induction coil 3. The two sliding sleeves 31 are respectively sleeved on the outside of the corresponding first screw rod 7 and second screw rod 71.

[0029] When it is necessary to open the first fixing member 1 and the second fixing member 2, it is only necessary to hold the upper fixing frame 11 and the lower fixing frame 12 with two hands respectively, and then pull them apart. Under the action of the pulling force, the spherical protrusion 141 comes out of the groove inside the fourth connecting frame 16. At this time, the first connecting frame 13, the upper fixing frame 11, the covering component 4 or the first screw rod 7 rotate upward. Because the sliding sleeve 31 is sleeved on the outside of the third screw rod 72, the induction coil 3 is also driven to rotate around the first screw rod 7. Then, the covering component 4 is pulled out of the groove. After the installation is completed, the steel strands will enter the interior of the fixing bracket 61, and then the second connecting frame 14 and the fourth connecting frame 16 will be merged. The spherical protrusion 141 will be stuck in the groove body inside the fourth connecting frame 16. When the merger is completed, the first screw 111 and the corresponding second screw 121 are spliced to form a complete bolt. The thread on the first screw 111 is opposite to the thread on the second screw 121. At this time, turn the first screw 111 and the second screw The upper fixing plate 112 and the lower fixing plate 122 are moved closer to each other, thereby clamping the cable. When the upper fixing plate 112 and the lower fixing plate 122 are moved closer to each other, the splicing position of the first screw 111 and the upper fixing plate 112 is locked to prevent them from moving, thereby locking the upper fixing frame 11 and the lower fixing frame 12 so that they cannot rotate, thereby increasing the fixing effect of the upper fixing frame 11 and the lower fixing frame 12. Only when the upper fixing plate 112 and the lower fixing plate 122 are moved away from each other to the farthest end, the upper fixing frame 11 and the lower fixing frame 12 are locked. The fixing frame 12 can be opened. After the cable is locked, use a tool to rotate the first screw rod 7 and the second screw rod 71, so that the first fixing member 1 and the second fixing member 2 are driven closer to each other. Because the area to be coated is located between the first fixing member 1 and the second fixing member 2, shortening the distance between the first fixing member 1 and the second fixing member 2 can pull the middle steel strand, thereby causing the steel wires in the steel strand to explode slightly, so that tiny gaps appear between each steel wire, which is convenient for the subsequent influx of liquid aluminum and increases the coating effect.

[0030] The covering part 4 includes an upper ceramic sleeve 41, and a lower ceramic sleeve 42 symmetrical to the upper ceramic sleeve 41 is provided below the upper ceramic sleeve 41. The internal parts of the upper ceramic sleeve 41 and the lower ceramic sleeve 42 are spliced together to form a closed chamber. The upper ceramic sleeve 41 and the lower ceramic sleeve 42 are both rotatably installed on the side away from the first fixing part 1 with a first locking part 43, and the upper ceramic sleeve 41 and the lower ceramic sleeve 42 are both rotatably installed on the side close to the first fixing part 1 with a second locking part 44. The two first locking parts 43 are fixed by screws, and the two second locking parts 44 are also fixed by screws. A plurality of evenly distributed arc plates 411 are fixedly installed inside the closed chamber formed by the upper ceramic sleeve 41 and the lower ceramic sleeve 42. The arc plates 411 are used to stir the molten liquid aluminum toward the middle, and a plurality of evenly distributed cooling grooves are provided on the two second locking parts 44.

[0031] The material of the upper ceramic sleeve 41 and the lower ceramic sleeve 42 is glazed ceramic material. Ceramics can prevent being heated by the induction coil 3, and ceramics are very resistant to high temperatures and have high thermal insulation properties. Therefore, the use of ceramic materials can prevent the upper ceramic sleeve 41 and the lower ceramic sleeve 42 from being burned by the heated aluminum, and can also provide good thermal insulation. The sealing of the upper ceramic sleeve 41 and the lower ceramic sleeve 42 can prevent the liquid aluminum from coming into contact with the air due to heating to produce aluminum oxide, which affects the later conductivity. Glazing the upper ceramic sleeve 41 and the lower ceramic sleeve 42 can prevent the liquid aluminum from cooling and adhering to its surface later.

[0032] When in use, the aluminum plate is located inside the closed chamber formed by the upper ceramic sleeve 41 and the lower ceramic sleeve 42. The first locking piece 43 and the second locking piece 44 are used to increase the sealing and lock the upper ceramic sleeve 41 and the lower ceramic sleeve 42 so that they can rotate stably. The upper ceramic sleeve 41 and the lower ceramic sleeve 42 will be driven to rotate rapidly because the liquid aluminum will be stationary in the lower half of the closed chamber under the action of gravity. When the upper ceramic sleeve 41 and the lower ceramic sleeve 42 rotate rapidly, because the liquid aluminum has the inertia to remain stationary, it will be thrown toward the center position by the high-speed rotating arc plate 411, that is, the liquid aluminum will be thrown toward the position of the steel wire strand, thereby increasing the fit between the liquid aluminum and the steel wire strand. As the upper ceramic sleeve 41 and the lower ceramic sleeve 42 gradually move, the second locking piece 44, when passing through the coated area, can quickly cool the coated steel wire strand because of the cooling groove on its surface, thereby achieving rapid cooling and forming of the aluminum layer.

[0033] The movable component 5 includes a movable frame 51, and the sliding rod 8 slides through the movable frame 51. The upper surface of the movable frame 51 is fixedly installed with a first side plate 52 on the side close to the first fixed member 1, and the upper surface of the movable frame 51 is fixedly installed with a second side plate 53 on the side close to the second fixed member 2. The second side plate 53 is fixedly installed with a connecting sleeve 532 on the side close to the first screw rod 7. The connecting sleeve 532 is rotatably installed on the outside of one of the sliding sleeves 31. Semicircular brackets 531 are fixedly installed on the first side plate 52 and the second side plate 53. Semicircular grooves corresponding to the semicircular brackets 531 are opened on the two first locking members 43. Semicircular grooves corresponding to the semicircular brackets 531 are also opened on the two second locking members 44. The semicircular brackets 531 are slidably clamped inside the semicircular grooves. The first side plate 52 is close to the second side plate A first gear set 54 is installed on one side of the plate 53, and a second gear set 55 is installed on the side of the second side plate 53 close to the first side plate 52. A worm 511 is rotatably installed on the movable frame 51, and a first worm wheel 512 engaged with the worm 511 is provided between the first gear set 54 and the second gear set 55. A second worm wheel 513 is engaged below the worm 511, and the second worm wheel 513 is rotatably installed on the movable frame 51 through a bracket. One end of the third screw rod 72 close to the first fixed member 1 is fixedly installed on the support frame 17 corresponding to the first fixed member 1, and the end of the third screw rod 72 close to the second fixed member 2 slides through the support frame 17 corresponding to the second fixed member 2. The second worm wheel 513 is sleeved on the outside of the third screw rod 72 through a threaded fitting, and a turning handle 514 is fixedly installed on one end of the worm rod 511.

[0034] When in use, turning the handle 514 drives the worm 511 to rotate, and then the worm 511 drives the first worm gear 512 and the second worm gear 513 to rotate, and the rotation of the second worm gear 513 will move along the surface of the third screw rod 72, and the second worm gear 513 is rotated and installed on the moving frame 51, so it can drive the moving frame 51 to move, and the slide bar 8 is used to make the moving frame 51 move stably. When the first worm gear 512 works, it drives the first gear set 54 to work, and when the first gear set 54 works, it will produce a rotation effect on the upper ceramic sleeve 41 and the lower ceramic sleeve 42, thereby making the moving part When moving, part 5 can drive the covering part 4 to rotate. Since semicircular grooves are provided on the first locking part 43 and the second locking part 44, the two first locking parts 43 and the two second locking parts 44 can be combined into a whole annular groove after being spliced together. The semicircular bracket 531 is semicircular, so the first locking part 43 and the second locking part 44 can be stably supported by the semicircular bracket 531 and will not fall out. When disassembly is required, it is only necessary to loosen the screws on the two first locking parts 43 and the two second locking parts 44, and rotate the first locking part 43 and the second locking part 44 to take them out.

[0035] The first gear set 54 includes a first ring gear 541, which is rotatably mounted on the first side plate 52. A first sun gear 542 is provided in the middle of the first ring gear 541, and the first sun gear 542 is fixedly mounted on the first side plate 52. A first planetary carrier 543 is provided on the side of the first ring gear 541 close to the second gear set 55. A plurality of first planetary gears are rotatably mounted on the first planetary carrier 543. The first planetary gears are meshed with the first ring gear 541 and the first sun gear 542. The first ring gear 541 is tightly fitted with the surface of the lower ceramic sleeve 42. The second gear set 55 includes a plurality of first planetary gears. The second ring gear 551 is fixedly mounted on the second side plate 53, and a second sun gear 552 is provided in the middle of the second ring gear 551, and the second sun gear 552 is rotatably mounted on the second side plate 53. A second planetary carrier 553 is provided on the side of the second ring gear 551 close to the first gear set 54, and a plurality of evenly distributed second planetary gears are rotatably mounted on the second planetary carrier 553, and the second planetary gears are meshed with the second ring gear 551 and the second sun gear 552. The first planetary carrier 543 and the second planetary carrier 553 are both fixedly mounted in the middle of the first worm gear 512.

[0036] When the first worm gear 512 is driven by the worm 511 to rotate, it can drive both the first planetary carriers 543 to rotate. Because the first sun gear 542 is fixedly mounted on the first side plate 52, when the first planetary carrier 543 drives the first planetary gear to rotate, the mobile frame 51 will generate accelerated rotation. When the second planetary carrier 553 is driven to rotate, because the second ring gear 551 is fixed to the second side plate 53, when the second planetary carrier 553 rotates, the second sun gear 552 will be driven to generate accelerated motion. The specific calculation methods of the two speed-increasing transmission ratios are as follows:

[0037] where Z R = Number of teeth on the ring gear, Z S =The number of teeth of the sun gear. When i>1, it indicates accelerated motion.

[0038] Because the first gear ring 541 is in close contact with the surfaces of the upper ceramic sleeve 41 and the lower ceramic sleeve 42, when the first gear ring 541 is driven to rotate, it will drive the upper ceramic sleeve 41 and the lower ceramic sleeve 42 to rotate at high speed, and the force of the high-speed rotation makes the liquid aluminum fit better with the steel wire strands.

[0039] A first transmission wheel 533 is provided on the side of the second side plate 53 away from the first side plate 52, and the first transmission wheel 533 is fixedly connected to the second sun gear 552. A plurality of evenly distributed second transmission wheels 534 are rotatably installed on the second side plate 53 through a bracket. The plurality of second transmission wheels 534 are located on the same horizontal plane as the first transmission wheel 533. A transmission belt 535 is used to transmit power between the plurality of second transmission wheels 534 and the first transmission wheel 533. The winding component 6 includes a fixed bracket 61, on which a C-shaped slide rail 62 is fixedly installed. A C-shaped rotating wheel 63 is rotatably installed on the side of the C-shaped slide rail 62 close to the first fixed component 1. The transmission belt 535 transmits power to the lower end of the C-shaped rotating wheel 63, and an insulating film 64 is detachably installed on the side of the C-shaped rotating wheel 63 away from the C-shaped slide rail 62.

[0040] When the second planetary carrier 553 is driven to rotate, because the second ring gear 551 is fixed, the second sun gear 552 will be driven to rotate at an accelerated speed, and the second sun gear 552 will drive the first transmission wheel 533 to rotate. When the first transmission wheel 533 rotates, it will drive all the first transmission wheels 533 to rotate through the transmission belt 535. Because the transmission belt 535 is transmitted to the lower end of the C-shaped pulley 63, when the transmission belt 535 is driven, it will drive the C-shaped pulley 63 to rotate. There is a gap on the C-shaped pulley 63. During installation, the cable can enter the interior of the C-shaped pulley 63 through the gap. When the C-shaped pulley 63 rotates, the insulating film 64 will wrap the surface of the cable with an insulating layer. When the C-shaped pulley 63 is driven to rotate continuously, the transmission belt 535 can cross the gap, so that it is stably driven to rotate.

[0041] A method for preparing an aluminum-clad steel wire layer by induction heating, using an apparatus for preparing an aluminum-clad steel wire layer by induction heating, comprising the following steps: S1. Use a cutter to remove the insulation layer around the damaged area, then clean the coated area and clean the area of the steel wire to be coated to remove impurities and oxide layer; S2. Preparation of aluminum sheet: clean the aluminum sheet to be coated to remove impurities and oxide layer, and evenly wrap the aluminum layer on the area to be coated on the steel wire; S3. Preparation for clamping: first open the first fixing member 1 and the second fixing member 2, clamp the aluminum-wrapped steel wire with the upper ceramic sleeve 41 and the lower ceramic sleeve 42, then tighten the screws on the first locking member 43 and the second locking member 44. The first locking member 43 and the second locking member 44 have patterns that match the steel strands to clamp the exposed steel strands. At this time, the upper ceramic sleeve 41 and the lower ceramic sleeve 42 are locked to form a closed chamber, and then close the first fixing member 1 and the second fixing member 2; S4, induction pressure coating, the clamped sample will be placed in the induction coil 3, and the mold will be induction heated to the hot melt temperature. At this time, the moving part 5 will work to drive the upper ceramic sleeve 41 and the lower ceramic sleeve 42 to rotate rapidly. During the rotation, the moving part 5 can also drive the induction coil 3, the coating part 4, and the winding part 6 to move at a constant speed on the slide bar 8, and the two first locking parts 43 and the two second locking parts 44 can also slowly rotate along the grain of the steel wire while being driven forward at a constant speed; S5. Sample processing after coating: During the movement, the cooling grooves on the two second locking members 44 can quickly cool the aluminum layer to form armor, and the aluminum layer can be squeezed by the two second locking members 44 on the surface of the steel wire strand to form a uniform armor layer.

[0042] S6. When moving at a constant speed, the winding component 6 can insulate the area where the armoring has been completed, and wind an insulating layer on its surface, thereby completing the overall maintenance work.

[0043] S7. Data processing: After the test is completed, the resistance value of the tested sample is directly output. Since the lengths of the tested samples vary, which affects the comparison of the steel wire performance, the resistance values of all steel wires are uniformly converted to the resistance at a length of 1 meter as shown in formula (1). The measured resistance is converted to conductivity as shown in formula (2). Then, the measurement is completed to ensure that the resistance value after repair meets the standard.

[0044] (1) (2) In the formula: σ is conductivity, ρ is resistivity, L is the actual measured length of the steel wire, R is the resistance value, and A is the cross-sectional area of the steel wire.

[0045] In this embodiment, the cleaning method of the aluminum-clad steel wire coated area in step S1 is to clean the aluminum-clad steel wire to be coated area with acetone solution and then with deionized water, then blow dry it, and then finely grind the area to be welded with sandpaper.

[0046] In this embodiment, in step S2, the aluminum sheet is cleaned by soaking it in an acetone solution for 2 minutes and then washing it with deionized water, then placing it in a NaOH solution (15wt%) for alkaline washing for 2 minutes, then placing it in an HNO3 solution (25wt%) for acid washing for 5 minutes, then washing it with plasma water and then drying it, and storing it in an oxygen-free dry environment to prevent it from being oxidized during transportation.

[0047] In this embodiment, in step S6, the conductivity of the coated aluminum-steel wire is 7.3% of the conductivity of the original aluminum-clad steel wire, which is within 10%.

[0048] Table 2 Comparison of electrical conductivity between aluminum clad steel wire base material and clad sample

[0049] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A device for preparing an aluminum-clad steel wire layer by induction heating, comprising a first fixing member (1), characterized in that: A second fixing member (2) is provided on one side of the first fixing member (1), an induction coil (3) for heating is provided between the first fixing member (1) and the second fixing member (2), a covering member (4) for covering the steel strands with an aluminum layer is provided in the middle of the induction coil (3), a moving member (5) is installed below the covering member (4), and a first screw rod (7) and a second screw rod (71) are provided symmetrically above the middle of the first fixing member (1) and the second fixing member (2); The first fixing member (1) and the second fixing member (2) both comprise an upper fixing frame (11), a lower fixing frame (12) symmetrical to the upper fixing frame (11) is provided below the upper fixing frame (11), a first connecting frame (13) and a second connecting frame (14) are fixedly mounted on both sides of the upper fixing frame (11), a third connecting frame (15) is fixedly mounted on a side of the lower fixing frame (12) corresponding to the first connecting frame (13), and a fourth connecting frame (16) is fixedly mounted on a side of the lower fixing frame (12) corresponding to the second connecting frame (14), and the first connecting frame (13) and the third connecting frame (15) are hingedly connected.

2. The device for preparing aluminum-clad steel wire by induction heating according to claim 1, characterized in that: One end of the first screw rod (7) close to the first fixing member (1) is rotatably mounted on the hinge of the first connecting frame (13) and the third connecting frame (15) on the first fixing member (1); one end of the first screw rod (7) away from the first fixing member (1) is clamped at the hinge of the first connecting frame (13) and the third connecting frame (15) corresponding to the second fixing member (2) through threaded engagement; one end of the second screw rod (71) close to the first fixing member (1) is rotatably mounted on the second connecting frame (14) corresponding to the first fixing member (1); one end of the second screw rod (71) close to the second fixing member (2) is clamped at the middle of the second connecting frame (14) corresponding to the second fixing member (2) through threaded engagement; A plurality of evenly distributed sliding rods (8) are provided at the lower middle position of the first fixing member (1) and the second fixing member (2); a support frame (17) is fixedly installed at the bottom end of the lower fixing frame (12); an end of the sliding rod (8) close to the first fixing member (1) is fixedly installed on the support frame (17) corresponding to the first fixing member (1); an end of the sliding rod (8) close to the second fixing member (2) slides through the lower end of the support frame (17) corresponding to the second fixing member (2); a plurality of evenly distributed first screws (111) are rotatably installed on the upper fixing frame (11); a plurality of evenly distributed second screws are rotatably installed on the lower fixing frame (12) (121), a Z-shaped incision is formed between the first screw rod (111) and the corresponding second screw rod (121), an upper fixing plate (112) is provided below the upper fixing frame (11), a plurality of upper fixing frames (11) are fixed on the upper fixing plate (112) by means of screw threads, a lower fixing plate (122) is provided above the lower fixing frame (12), a plurality of second screw rods (121) are fixed on the lower fixing plate (122) by means of screw threads, a plurality of evenly distributed spherical protrusions (141) are provided on both sides of the second connecting frame (14), and a groove body corresponding to the second connecting frame (14) is provided on the inner side of the fourth connecting frame (16).

3. The device for preparing aluminum-clad steel wire by induction heating according to claim 2, characterized in that: The covering component (4) includes an upper ceramic sleeve (41), a lower ceramic sleeve (42) symmetrical to the upper ceramic sleeve (41) is provided below the upper ceramic sleeve (41), and the interiors of the upper ceramic sleeve (41) and the lower ceramic sleeve (42) are spliced together to form a closed chamber. A first locking member (43) is rotatably mounted on the side of the upper ceramic sleeve (41) and the lower ceramic sleeve (42) away from the first fixing member (1), and a second locking member (44) is rotatably mounted on the side of the upper ceramic sleeve (41) and the lower ceramic sleeve (42) close to the first fixing member (1). The two first locking members (43) are fixed by screws, and the two second locking members (44) are also fixed by screws. A plurality of evenly distributed arc plates (411) are fixedly mounted inside the closed chamber formed by the upper ceramic sleeve (41) and the lower ceramic sleeve (42), and the arc plates (411) are used to stir the molten liquid aluminum toward the middle.

4. The device for preparing aluminum-clad steel wire by induction heating according to claim 3, characterized in that: The movable component (5) includes a movable frame (51), a slide rod (8) slidingly passes through the movable frame (51), a first side plate (52) is fixedly installed on the upper surface of the movable frame (51) close to the first fixing member (1), a second side plate (53) is fixedly installed on the upper surface of the movable frame (51) close to the second fixing member (2), a semicircular bracket (531) is fixedly installed on the first side plate (52) and the second side plate (53), the two first locking members (43) are each provided with a semicircular groove corresponding to the semicircular bracket (531), and the two second locking members (44) are also provided with a semicircular groove corresponding to the semicircular bracket (531). The semicircular bracket (531) corresponds to a semicircular groove, and the semicircular bracket (531) is slidably clamped inside the semicircular groove. A first gear set (54) is installed on the side of the first side plate (52) close to the second side plate (53), and a second gear set (55) is installed on the side of the second side plate (53) close to the first side plate (52). A worm (511) is rotatably installed on the movable frame (51), and a first worm wheel (512) meshing with the worm (511) is provided between the first gear set (54) and the second gear set (55), and a plurality of evenly distributed cooling grooves are provided on the two second locking members (44).

5. The device for preparing aluminum-clad steel wire by induction heating according to claim 4, characterized in that: The first gear set (54) includes a first gear ring (541), the first gear ring (541) is rotatably mounted on the first side plate (52), a first sun gear (542) is provided in the middle of the first gear ring (541), the first sun gear (542) is fixedly mounted on the first side plate (52), a first planet carrier (543) is provided on the side of the first gear ring (541) close to the second gear set (55), a plurality of first planetary gears are rotatably mounted on the first planet carrier (543), the first planetary gears are meshed with the first gear ring (541) and the first sun gear (542), the first gear ring (541) is tightly fitted with the surface of the lower ceramic sleeve (42), and the second gear set (5 5) includes a second ring gear (551), the second ring gear (551) is fixedly mounted on the second side plate (53), a second sun gear (552) is provided in the middle of the second ring gear (551), the second sun gear (552) is rotatably mounted on the second side plate (53), a second planetary carrier (553) is provided on the side of the second ring gear (551) close to the first gear set (54), a plurality of evenly distributed second planetary gears are rotatably mounted on the second planetary carrier (553), the second planetary gears are meshed with the second ring gear (551) and the second sun gear (552), and the first planetary carrier (543) and the second planetary carrier (553) are both fixedly mounted in the middle of the first worm gear (512).

6. The device for preparing aluminum-clad steel wire by induction heating according to claim 5, characterized in that: Two symmetrical sliding sleeves (31) are fixedly mounted on the induction coil (3), and the two sliding sleeves (31) are respectively sleeved on the outside of the corresponding first screw rod (7) and the second screw rod (71). A connecting sleeve (532) is fixedly mounted on the side of the second side plate (53) close to the first screw rod (7), and the connecting sleeve (532) is rotatably mounted on the outside of one of the sliding sleeves (31).

7. The device for preparing aluminum-clad steel wire by induction heating according to claim 6, characterized in that: A first transmission wheel (533) is provided on a side of the second side plate (53) away from the first side plate (52), the first transmission wheel (533) is fixedly connected to the second sun gear (552), and a plurality of evenly distributed second transmission wheels (534) are rotatably mounted on the second side plate (53) via a bracket, the plurality of second transmission wheels (534) and the first transmission wheel (533) are located on the same horizontal plane, and a transmission belt (535) is used to transmit power between the plurality of second transmission wheels (534) and the first transmission wheel (533).

8. The device for preparing aluminum-clad steel wire by induction heating according to claim 7, characterized in that: A winding component (6) for wrapping the insulating layer is provided on a side of the covering component (4) close to the first fixing component (1), and the winding component (6) includes a fixing bracket (61), a C-shaped slide rail (62) is fixedly mounted on the fixing bracket (61), a C-shaped rotating wheel (63) is rotatably mounted on a side of the C-shaped slide rail (62) close to the first fixing component (1), the transmission belt (535) is driven by the lower end of the C-shaped rotating wheel (63), and an insulating film (64) is detachably mounted on a side of the C-shaped rotating wheel (63) away from the C-shaped slide rail (62).

9. The device for preparing aluminum-clad steel wire by induction heating according to claim 8, characterized in that: A second worm wheel (513) is meshed below the worm (511), and the second worm wheel (513) is rotatably mounted on the movable frame (51) through a bracket. A third screw rod (72) is provided between the first fixing member (1) and the second fixing member (2). An end of the third screw rod (72) close to the first fixing member (1) is fixedly mounted on a support frame (17) corresponding to the first fixing member (1). An end of the third screw rod (72) close to the second fixing member (2) slides through the support frame (17) corresponding to the second fixing member (2). The second worm wheel (513) is sleeved on the outside of the third screw rod (72) through a threaded fit, and a turning handle (514) is fixedly mounted on one end of the worm (511).

10. A method for preparing aluminum-clad steel wire by induction heating, using the device for preparing aluminum-clad steel wire by induction heating according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Use a cutter to remove the insulation layer around the damaged area, then clean the coated area and clean the area of the steel wire to be coated to remove impurities and oxide layer; S2. Preparation of aluminum sheet: clean the aluminum sheet to be coated to remove impurities and oxide layer, and evenly wrap the aluminum layer on the area to be coated on the steel wire; S3. Preparation for clamping: first open the first fixing member (1) and the second fixing member (2), clamp the aluminum-wrapped steel wire using the upper ceramic sleeve (41) and the lower ceramic sleeve (42), then tighten the screws on the first locking member (43) and the second locking member (44), and the first locking member (43) and the second locking member (44) can match the texture of the steel wire strands to clamp the exposed steel wire strands, and at this time, the upper ceramic sleeve (41) and the lower ceramic sleeve (42) are locked to form a closed chamber, and then close the first fixing member (1) and the second fixing member (2); S4, induction pressure coating, the clamped sample will be placed in the induction coil (3), and the induction heating mold will be heated to the hot melt temperature. At this time, the moving part (5) will work to drive the upper ceramic sleeve (41) and the lower ceramic sleeve (42) to rotate rapidly, and when rotating, the moving part (5) can also drive the induction coil (3), the coating part (4), and the winding part (6) to move at a uniform speed on the slide rod (8), and the two first locking parts (43) and the two second locking parts (44) can also rotate slowly along the grain of the steel wire when being driven to move forward at a uniform speed; S5. Processing the sample after coating. During the movement, the cooling grooves on the two second locking members (44) can allow the aluminum layer to quickly cool to form armor, and the aluminum layer can be squeezed by the two second locking members (44) on the surface of the steel wire strand to form a uniform armor layer; S6. When moving at a constant speed, the winding component (6) can insulate the area where the armoring has been completed, and wind an insulating layer on its surface, thereby completing the overall maintenance work; S7, data processing, after the test is completed, the resistance value of the tested sample is directly output; since the lengths of the tested samples are different, which affects the comparison of the steel wire performance, the resistance values of all steel wires are uniformly converted to the resistance under a length of 1 meter as shown in formula (1), and the measured resistance is converted into conductivity as shown in formula (2), thereby completing the measurement work and ensuring that the resistance value after repair meets the standard; (1) (2) In the formula: σ is conductivity, ρ is resistivity, L is the actual measured length of the steel wire, R is the resistance value, and A is the cross-sectional area of the steel wire.

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