Self-adaptive stripping device for multi-model steel-cored aluminum stranded wire

Abstract

The application discloses a self-adaptive cutting and stripping device for multi-model steel-cored aluminum stranded wires and belongs to the field of power transmission line construction equipment, which comprises a first fixed ring, a second fixed ring coaxially arranged on one side of the first fixed ring, a first rotating ring and a second rotating ring rotationally connected to opposite surfaces of the first fixed ring and the second fixed ring respectively, a plurality of cutting assemblies arranged in an annular and uniform distribution mode on the first rotating ring, and a plurality of stripping assemblies arranged in an annular and uniform distribution mode on the second rotating ring. The first rotating ring and the second rotating ring are opposite in rotation direction, and the feeding assembly can still drive the cutting knife and the stripping fingers to perform a stable and accurate radial extension and retraction action under the condition that the first rotating ring and the second rotating ring continuously rotate at a high speed, so that the integrity of the inner steel core is effectively protected, and the cutting and stripping operation can be performed on the steel-cored aluminum stranded wires of different models and different aluminum stranded wire layers.

Description

Technical Field

[0001] This invention relates to the field of transmission line construction equipment, and in particular to an adaptive stripping device for various types of steel-cored aluminum stranded wire. Background Technology

[0002] The construction of tension clamps for 66kV-500kV overhead lines requires accurate determination of the stripping length and removal of the specified length of outer aluminum strands without damaging the steel core. Currently, on-site operations are mostly carried out by personnel measuring, marking, sawing, and manually stripping, which involves scattered processes, high labor intensity, and is prone to causing scratches on the steel core, aluminum strand residue, loose strands, or length deviations.

[0003] To address the difficulty of manual stripping, power workers have attempted to use cable stripping machines, rotary stripping machines, and on-site manual sawing and pliers to perform the stripping operation. However, ordinary cable stripping machines are mainly designed for cables with insulation layers or single structures, operating with fixed blade depth and fixed clamps. They are not suitable for steel-cored aluminum stranded cables with multiple spiral aluminum wires on the outer layer, steel core on the inner layer, and combinations of different diameters and stripping lengths. Furthermore, although some rotary cutting devices can form circumferential cuts, they lack self-centering clamping, steel core protection margin, and segmented stripping functions, still requiring manual stripping and blade replacement. Summary of the Invention

[0004] To address the problems of existing steel-cored aluminum stranded wire stripping equipment, such as difficulty in determining interlayer interfaces, easy damage to the steel core, and inability to adapt to different wire types when stripping multiple layers of aluminum strands, this invention provides an adaptive stripping device for multiple types of steel-cored aluminum stranded wires. This device can achieve stable and accurate stripping of any number of aluminum strands layer by layer while ensuring that the inner steel core remains undamaged.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: An adaptive stripping device for multiple types of steel-cored aluminum stranded wire includes a first fixing ring mounted on a base. Several hydraulic cylinders arranged in a ring are installed inside the first fixing ring. The output end of each hydraulic cylinder is fixedly connected to a clamping block for circumferentially fixing the steel-cored aluminum stranded wire. A second fixing ring is coaxially arranged on one side of the first fixing ring. A first rotating ring and a second rotating ring are rotatably connected to the surfaces opposite to the first fixing ring and the second fixing ring, respectively. The centers of the first rotating ring and the second rotating ring are located on the axis of the first fixing ring. The first rotating ring is provided with several cutting components arranged in a ring evenly, and the second rotating ring is provided with several peeling components arranged in a ring evenly. The cutting assembly includes a first fixed cylinder fixedly connected to a first rotating ring, a first telescopic rod slidably connected to the first fixed cylinder, and a cutter disposed at one end of the first telescopic rod pointing towards the center of the first rotating ring. The peeling assembly includes a second fixed cylinder that is fixedly connected to the second rotating ring, a second telescopic rod that is slidably connected to the second fixed cylinder, and a peeling finger that is provided at one end of the second telescopic rod pointing toward the center of the second rotating ring. The first rotating ring and the second rotating ring are connected to the power assembly through a transmission component, and rotate in opposite directions; A feeding assembly is provided between the first telescopic rod and the second telescopic rod. The feeding assembly is used to push and pull the first telescopic rod and the second telescopic rod to extend and retract along the first fixed cylinder and the second fixed cylinder, and can rotate with the corresponding first rotating ring or second rotating ring when extending and retracting.

[0006] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the feeding assembly includes two sets of symmetrically arranged moving plates. The two sets of moving plates are slidably connected to the first rotating ring and the second rotating ring in the radial grooves. The moving plates are hinged with connecting rods, and the two sets of connecting rods are hinged to the first telescopic rod and the second telescopic rod, respectively.

[0007] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the moving plate is rotatably connected to rollers, and two sets of rollers are slidably arranged in two annular tracks. The two annular tracks are respectively fitted around the outer circumference of the first rotating ring and the second rotating ring and are coaxially arranged. The wing plate on one side of the two annular tracks is threadedly connected to a bidirectional lead screw. The bidirectional lead screw is rotatably connected to the base through a shaft seat, and the bidirectional lead screw is connected to a feed adjustment motor arranged on the base through a coupling. The wing plate on the other side of the two annular tracks is slidably connected to a guide rod.

[0008] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the distance between the end of the stripping finger and the axis of the first fixed ring is greater than the distance between the end of the cutter and the axis of the first fixed ring, and the distance difference is 37%-54% of that of a single aluminum stranded wire.

[0009] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the stripping finger includes a rectangular part, which is fixedly connected to the end of the second telescopic rod. The rectangular part is provided with a hook-shaped protrusion facing the center of the first rotating ring to form a hook-shaped part. The distance between the end of the hook-shaped protrusion and the rectangular part gradually increases from one side to the other.

[0010] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the rectangular portion and the hook-shaped portion extend toward the cutting direction and beyond the end of the second telescopic rod.

[0011] As another optimization scheme for the aforementioned adaptive cutting and stripping device for multiple types of steel-cored aluminum stranded wire, the cutting blade is a beveled blade or a circular arc blade.

[0012] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the top of the base is provided with a conveying component and a collection box. The conveying component is located on the side of the first fixed ring away from the second fixed ring, and the collection box is located on the side of the second fixed ring away from the first fixed ring.

[0013] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the end of the second fixing ring facing the collection box is flared and includes a first fixing ring set on the base. Several hydraulic cylinders arranged in a ring are installed inside the first fixing ring. The output end of each hydraulic cylinder is fixedly connected to a clamping block for circumferentially fixing the steel-cored aluminum stranded wire. A second fixing ring is coaxially arranged on one side of the first fixing ring. A first rotating ring and a second rotating ring arranged concentrically with the first fixing ring are respectively rotatably connected on the surfaces opposite to the first fixing ring and the second fixing ring. The inner side of the first rotating ring is provided with several ring-shaped evenly distributed cutting components, and the inner side of the second rotating ring is provided with several ring-shaped evenly distributed peeling components. The cutting assembly includes a cutter that is radially slidable along a first rotating ring; The peeling assembly includes peeling fingers that are radially slidable along the second rotating ring; A feeding assembly is provided between the cutter and the peeling finger. The feeding assembly is used to push and pull the cutter and the peeling finger to move radially along the first fixed cylinder and the second fixed cylinder, and can rotate with the corresponding first rotating ring or second rotating ring when moving. The first rotating ring and the second rotating ring are connected to the power assembly through a transmission component, and rotate in opposite directions.

[0014] As another optimized solution for the adaptive cutting and stripping device for multiple types of steel-cored aluminum stranded wire, the feeding component includes two sets of symmetrically arranged moving plates. The two sets of moving plates are slidably connected to the first rotating ring and the second rotating ring in the radial grooves. The moving plates are hinged with connecting rods, and the two sets of connecting rods are respectively connected to the cutter and the stripping finger. The first rotating ring is slidably connected to the first telescopic rod via the first fixed cylinder. The first telescopic rod is hinged to one of the connecting rods, and the cutter is installed at the free end of the first telescopic rod. The second rotating ring is slidably connected to the second telescopic rod via the second fixed cylinder. The second telescopic rod is hinged to another set of connecting rods, and the peeling finger is installed at the free end of the second telescopic rod.

[0015] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the moving plate is rotatably connected to rollers, and two sets of rollers are slidably arranged in two annular tracks. The two annular tracks are respectively fitted around the outer circumference of the first rotating ring and the second rotating ring and are coaxially arranged. The wing plate on one side of the two annular tracks is threadedly connected to a bidirectional lead screw. The bidirectional lead screw is rotatably connected to the base through a shaft seat, and the bidirectional lead screw is connected to a feed adjustment motor arranged on the base through a coupling. The wing plate on the other side of the two annular tracks is slidably connected to a guide rod.

[0016] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the distance between the end of the stripping finger and the axis of the first fixed ring is greater than the distance between the end of the cutter and the axis of the first fixed ring, and the distance difference is 37%-54% of that of a single aluminum stranded wire.

[0017] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the stripping finger includes a rectangular part, which is fixedly connected to the end of the second telescopic rod. The rectangular part is provided with a hook-shaped protrusion facing the center of the first rotating ring to form a hook-shaped part. The distance between the end of the hook-shaped protrusion and the rectangular part gradually increases from one side to the other.

[0018] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the rectangular portion and the hook-shaped portion extend toward the cutting direction and beyond the end of the second telescopic rod.

[0019] As another optimization scheme for the aforementioned adaptive cutting and stripping device for multiple types of steel-cored aluminum stranded wire, the cutting blade is a beveled blade or a circular arc blade.

[0020] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the top of the base is provided with a conveying component and a collection box. The conveying component is located on the side of the first fixed ring away from the second fixed ring, and the collection box is located on the side of the second fixed ring away from the first fixed ring.

[0021] As another optimized solution for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the end of the second fixing ring facing the collection box is flared.

[0022] As another optimization scheme for the adaptive stripping device for multiple types of steel-cored aluminum stranded wire, the clamping blocks on adjacent hydraulic cylinders are arranged in an alternating manner.

[0023] The present invention has the following beneficial effects: 1) By setting up a first rotating ring and a second rotating ring with opposite directions, the stripping finger tip and the cutter are driven to perform a stripping action on the steel-cored aluminum strand. This achieves mechanical coordination between the cutting and stripping processes, so that after the cutter cuts the aluminum strands of the preset cross section, the stripping finger rotating in the opposite direction can wedge into the gap between adjacent aluminum strands and efficiently twist and pry away the remaining connection parts, thus achieving stable and reliable stripping action of single-layer aluminum strand.

[0024] 2) With the feed assembly in place, the cutter and stripping finger can still perform a smooth and precise radial extension and retraction feed action while the first and second rotating rings are rotating at high speed. This improves the continuity and efficiency of the cutting and stripping action, and the feed action is precise and controllable, effectively protecting the integrity of the inner steel core. It can also adapt to the cutting and stripping of steel core aluminum stranded wires of different models and different numbers of aluminum stranded wire layers.

[0025] The additional technical features and advantages of the present invention will become more apparent from the following description, or may be learned through practice of the invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a schematic diagram of the overall structure of the device from another angle; Figure 3 This is a side sectional view of the first fixing ring and the second fixing ring; Figure 4 This is a structural schematic diagram of the first fixed ring, the second fixed ring, the first rotating ring, and the second rotating ring; Figure 5 It is a cross-sectional schematic diagram of the first fixed ring, the second fixed ring, the first rotating ring, and the second rotating ring; Figure 6 This is a frontal sectional view of the first and second rotating rings; Figure 7 This is a schematic diagram showing the connection between the first rotating ring, the second rotating ring, and the feed assembly; Figure 8 This is a schematic diagram showing the connection between the cutting component, the stripping component, and the feeding component; Figure 9 This is a schematic diagram of the structure of the first rotating ring and the cutting assembly; Figure 10 This is a schematic diagram of the structure of the second rotating ring and the peeling assembly; Figure 11 This is a schematic diagram showing the connection between the cutting component, the stripping component, and the feeding component; Figure 12 This is a cross-sectional diagram of the circular track; Figure 13 This is a structural diagram of the feeding assembly and the cutting assembly; Figure 14 This is a structural diagram of the feeding assembly and the stripping assembly; The reference numerals in the attached drawings are explained as follows: 1. First fixed ring; 2. Second fixed ring; 3. Hydraulic cylinder; 4. Clamping block; 5. First rotating ring; 6. Second rotating ring; 7. Cutting assembly; 701. First fixed cylinder; 702. First telescopic rod; 703. Cutter; 8. Peeling assembly; 801. Second fixed cylinder; 802. Second telescopic rod; 803. Peeling finger; 9. Feeding assembly; 901. Moving plate; 902. Connecting rod; 903. Roller; 904. Circular track; 905. Bidirectional lead screw; 906. Guide rod; 10. Base; 11. Conveying assembly; 12. Collection box; 13. First power motor; 14. Second power motor; 15. Transmission component; 16. Feed adjustment motor. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. Parts not explained in the following embodiments of the present invention, such as the specific models of the first power motor, the second power motor and the feed adjustment motor, as well as the control unit and the power supply unit, are all considered to be prior art known or should be known by those skilled in the art.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, an adaptive stripping device for various types of steel-cored aluminum stranded wire includes a first fixing ring 1 and a second fixing ring 2 fixedly mounted on the top of a base 10. The base 10 provides rigid support for the entire device, ensuring that the components maintain a stable relative position during operation. A conveying assembly 11 and a collection box 12 are provided on the top of the base 10. The conveying assembly 11 is located on the side of the first fixing ring 1 away from the second fixing ring 2, i.e., the front end of the device, and is used to feed the steel-cored aluminum stranded wire axially into the first fixing ring 1 before the stripping operation. The collection box 12 is located on the side of the second fixing ring 2 away from the first fixing ring 1, i.e., the rear end of the device, and is used to collect the spiral aluminum strand scrap stripped from the wire, keeping the work site clean.

[0030] like Figure 2As shown, a plurality of hydraulic cylinders 3 arranged in a ring are installed inside the first fixing ring 1. The number of hydraulic cylinders 3 can be set to three or more according to actual needs, preferably three hydraulic cylinders evenly distributed along the circumference. The cylinder body of each hydraulic cylinder 3 is arranged radially along the first fixing ring 1, and its output end points towards the center of the first fixing ring 1. A clamping block 4 is fixedly connected to the output end of each hydraulic cylinder 3. The surface of the clamping block 4 facing the center of the first fixing ring 1 is an arc-shaped surface adapted to the outer diameter of the steel-cored aluminum stranded wire, and two adjacent clamping blocks 4 are staggered to ensure that steel-cored aluminum stranded wires of different diameters and different layer counts can be processed. Clamping and fixing: After the steel-cored aluminum stranded wire to be processed is fed in by the conveying assembly 11 and passes through the first fixing ring 1, the hydraulic cylinder 3 simultaneously pushes each clamping block 4 to move radially towards the center, clamping and fixing the steel-cored aluminum stranded wire from the circumferential direction. This clamping action ensures that the wire axis is always coaxial with the axis of the first rotating ring 5 and the second rotating ring 6, thereby ensuring that the feed amount of each cutter 703 and the stripping finger 803 in the circumferential direction is uniform and consistent, avoiding the defects of overcutting or undercutting on one side due to wire eccentricity. The clamping force of the hydraulic cylinder 3 can be precisely controlled by the hydraulic system to avoid the wire deformation caused by excessive clamping force or the unstable clamping caused by insufficient clamping force.

[0031] like Figure 1 and Figure 3 As shown, a second fixed ring 2 is coaxially arranged on one side of the first fixed ring 1. A preset gap is left between the first fixed ring 1 and the second fixed ring 2. A first rotating ring 5 and a second rotating ring 6 are rotatably connected to the opposite surfaces of the first fixed ring 1 and the second fixed ring 2, respectively. A gap is also formed between the first rotating ring 5 and the second rotating ring 6 so that no interference occurs when the first rotating ring 5 and the second rotating ring 6 rotate in opposite directions. The first rotating ring 5 is rotatably mounted on the end face of the first fixed ring 1 facing the second fixed ring 2 through a bearing or other rotating support. The second rotating ring 6 is rotatably mounted on the end face of the second fixed ring 2 facing the first fixed ring 1 through a bearing or other rotating support. The centers of the first rotating ring 5 and the second rotating ring 6 are both located on the axis of the first fixed ring 1. That is, the first rotating ring 5, the second rotating ring 6 and the first fixed ring 1 are coaxially arranged. By setting the first rotating ring 5 and the second rotating ring 6 on the two fixed rings respectively, the two functional modules of cutting and peeling are spatially separated and their rotation directions can be controlled independently.

[0032] like Figure 5 As shown in this embodiment, a number of evenly distributed cutting components 7 are provided on the first rotating ring 5. The number of cutting components 7 is preferably three, which are evenly distributed along the circumference of the first rotating ring 5 at intervals of 120°. The three cutting components 7 work simultaneously, which can form a continuous and complete circumferential cut in the circumference of the aluminum stranded wire in one rotation cycle, thereby improving the cutting efficiency and the uniformity of the cut.

[0033] In addition, it should be noted that the rotation direction of the first rotating ring 5 and the cutting component 7 should be consistent with the direction of the spiral formed by the aluminum stranded wire, so as to ensure the uniformity of the cutting of the aluminum stranded wire and the flatness of the cutting. Similarly, the rotation direction of the peeling component 8 described below is opposite to the direction of the spiral, which effectively ensures the peeling action.

[0034] like Figure 5 As shown, the second rotating ring 6 is provided with a number of stripping components 8 arranged in a ring. The number of stripping components 8 corresponds to the number of cutting components 7, and preferably three. They are evenly distributed along the circumference of the second rotating ring 6 and spaced at 120° intervals. The three stripping components 8 work simultaneously and can apply prying force to the aluminum strand from three directions at the same time, so that the aluminum strand is subjected to uniform force during the stripping process, avoiding uneven wire bending or aluminum strand breakage caused by unilateral force.

[0035] The specific structure of cutting component 7 is as follows: Figure 9 and Figure 13 As shown, the cutting assembly 7 includes a first fixed cylinder 701 and a first telescopic rod 702. The first fixed cylinder 701 extends radially along the first rotating ring 5, and its end away from the center of the first rotating ring 5 is fixedly connected to the first rotating ring 5. The interior of the first fixed cylinder 701 is provided with a sliding cavity extending axially. The first telescopic rod 702 is slidably fitted into the sliding cavity of the first fixed cylinder 701. Of course, the first fixed cylinder 701 and the first telescopic rod 702 can also be splined or keyed to achieve the purpose of telescopic extension and retraction of the first telescopic rod 702 along its axial direction. One end of the first telescopic rod 702 extends from the end of the first fixed cylinder 701 pointing towards the center of the first rotating ring 5, and a cutter 703 is fixedly installed at this end. When the first telescopic rod 702 slides axially along the first fixed cylinder 701, the cutter 703 moves radially along the first rotating ring 5, thereby adjusting the radial position and feed depth of the cutter 703 relative to the surface of the wire.

[0036] like Figure 9 As shown, the cutting edge of the cutter 703 is a beveled edge. This beveled edge structure changes the contact between the cutter 703 and the aluminum strand during cutting from line contact to progressive surface contact, reducing instantaneous cutting resistance and improving cutting stability. The material of the cutter 703 is preferably cemented carbide or high-speed steel to ensure wear resistance and edge retention under high-speed cutting conditions. Alternatively, the cutting edge of the cutter 703 can be arc-shaped. This arc-shaped edge structure facilitates a combined compression and shearing action during cutting, resulting in a smoother cut and reducing burrs on the aluminum strand's fracture surface.

[0037] like Figure 14As shown, the stripping assembly 8 includes a second fixed cylinder 801 and a second telescopic rod 802. The second fixed cylinder 801 extends radially along the second rotating ring 6, with one end away from the center of the second rotating ring 6 fixedly connected to the second rotating ring 6. The interior of the second fixed cylinder 801 has a sliding cavity extending axially therein. The second telescopic rod 802 is slidably fitted into the sliding cavity of the second fixed cylinder 801, with one end extending from the end of the second fixed cylinder 801 pointing towards the center of the second rotating ring 6, and a stripping finger 803 is fixedly mounted at that end. When the second telescopic rod 802 slides axially along the second fixed cylinder 801, the stripping finger 803 moves radially along the second rotating ring 6, thereby adjusting the radial position and clamping force of the stripping finger 803 relative to the surface of the conductor.

[0038] Example 2

[0039] The main structure of this embodiment is the same as that in Embodiment 1, except that, as Figure 10 and Figure 14 As shown, the detailed structure of the peeling finger 803 is further defined. The peeling finger 803 includes a rectangular portion, which is fixedly connected to the end of the second telescopic rod 802. The rectangular portion has a hook-shaped protrusion facing the center of the first rotating ring 5 to form a hook-shaped portion. The distance from the end of the hook-shaped protrusion to the rectangular portion gradually increases from one side to the other, effectively increasing the contact area between the peeling finger 803 and the aluminum strands, dispersing contact stress, and avoiding localized pressure or scratches on the surface of the aluminum strands. Furthermore, the thickness of the hook-shaped portion gradually decreases along its length, forming a sharp wedge-shaped tip, which facilitates wedging into the interlayer gaps between the aluminum strands or the circumferential cuts formed by the cutter 703 during rotation. The rectangular portion and the hook-shaped portion extend towards the cutter 703 and beyond the end of the second telescopic rod 802. This extended portion can catch the root of the cut aluminum strand when the peeling finger 803 rotates in the opposite direction, using the leverage effect of the cantilever to increase the prying torque on the aluminum strand, thereby efficiently separating the aluminum strand from the stranded state.

[0040] The first rotating ring 5 and the second rotating ring 6 are respectively connected to the power assembly via the transmission component 15, such as Figure 1 As shown, the power assembly includes a first power motor 13 and a second power motor 14. The output end of the first power motor 13 is connected to the outer periphery of the first rotating ring 5 through a transmission member 15 to drive the first rotating ring 5 to rotate around its axis. The output end of the second power motor 14 is connected to the outer periphery of the second rotating ring 6 through the transmission member 15 to drive the second rotating ring 6 to rotate around its axis. The transmission member 15 can be any one of a synchronous belt drive mechanism, a gear drive mechanism, or a chain drive mechanism, preferably a synchronous belt drive.

[0041] Both the first power motor 13 and the second power motor 14 are variable frequency speed control motors, capable of independently controlling their speed and direction of rotation. During the stripping operation, the rotation directions of the first rotating ring 5 and the second rotating ring 6 are controlled to be opposite, and the difference between the distance between the end of the stripping finger 803 and the axis of the first fixed ring 1 and the distance between the end of the cutter 703 and the axis of the first fixed ring 1 is 37%-54% of that of a single aluminum strand. Since the adjacent layers of aluminum strands are staggered, and the adjacent aluminum strands in the same layer are tangent in the circumferential plane, when the cutter 703 cuts into the current layer of aluminum strands, its cutting position is located in the radial middle of the current layer of aluminum strands, slightly inside. If the distance between the end of the stripping finger 803 and the axis of the first fixed ring 1 is different from that of the end of the cutter 703, the difference between the distance between the end of the stripping finger 803 and the axis of the first fixed ring 1 is 37%-54%. If the difference in distance between the end and the axis is too small, the hook-shaped protrusion of the stripping finger 803 will have difficulty reliably wedging into the circumferential cut formed by the cutter 703 during rotation. This will cause the stripping finger 803 to have difficulty effectively hooking the cut aluminum strand, and the stripping finger 803 may slip on the surface of the current layer of aluminum strands and fail to pry up the aluminum strands smoothly, thus reducing the stripping efficiency. If the difference in distance is too large, the hook-shaped protrusion of the stripping finger 803 will penetrate too deeply into the cut of the current layer of aluminum strands, and may directly contact and scratch the inner layer of aluminum strands or even the central steel core, resulting in conductor damage or affecting subsequent conductivity.

[0042] Therefore, by controlling the aforementioned distance difference within the range of 37%-54% of the diameter of a single aluminum strand, on the one hand, the hook-shaped protrusion of the stripping finger 803 can precisely wedge into the circumferential slit formed by the cutter 703 during rotation, and reliably hook the cut end of the aluminum strand, using the torsional force of the reverse rotation to efficiently twist and peel the aluminum strand from the stranded state; on the other hand, the end of the hook-shaped protrusion of the stripping finger 803 only acts on the cutting area of ​​the current layer of aluminum strand after feeding, without touching the surface of the inner layer of aluminum strand or the steel core, thus achieving precise cutting and non-destructive stripping of each layer of aluminum strand. This range can be compatible with steel core aluminum strands of different layers and specifications. When the first rotating ring 5 drives the cutter 703 to rotate clockwise for cutting, the second rotating ring 6 drives the peeling finger 803 to rotate counterclockwise for peeling. During the rotation, the hook-shaped part of the peeling finger 803 can wedge into the cut in the opposite direction of the spiral twisting direction of the aluminum strands, thereby more effectively twisting and peeling the cut aluminum strands off the wire, rather than simply relying on axial tension to break them, ensuring the neatness of the peeled break and the complete separation of the aluminum strands.

[0043] like Figure 5 and Figure 7 As shown, a feed assembly 9 is provided between the first telescopic rod 702 and the second telescopic rod 802. The feed assembly 9 is used to synchronously drive the first telescopic rod 702 of all cutting components 7 and the second telescopic rod 802 of all peeling components 8 to move radially during the cutting and peeling process, so as to realize the synchronous radial feed or retraction of the cutter 703 and the peeling finger 803.

[0044] The specific structure of the feed assembly 9 is as follows: it includes two sets of symmetrically arranged movable plates 901, which are respectively corresponding to the first rotating ring 5 and the second rotating ring 6. The movable plates 901 are slidably connected to the corresponding rotating rings in the radial grooves, and can slide freely along the grooves in the radial direction of the rotating rings, but rotate synchronously with the rotating rings in the circumferential direction. Connecting rods 902 are hinged to the movable plates 901, and the two sets of connecting rods 902 are respectively hinged to the first telescopic rod 702 and the second telescopic rod 802.

[0045] The connecting rod 902 on the movable piece 901 corresponding to the first rotating ring 5 is hinged to the first telescopic rod 702, and the connecting rod 902 on the movable piece 901 corresponding to the second rotating ring 6 is hinged to the second telescopic rod 802. Through the above-mentioned hinged linkage structure, when the movable pieces 901 slide away from each other radially along the slide groove, the connecting rod 902 pushes the corresponding telescopic rod to extend towards the center, realizing the radial feed of the cutter 703 or the peeling finger 803; when the movable pieces 901 move closer to each other radially along the slide groove, the connecting rod 902 pulls the corresponding telescopic rod to retract away from the center, realizing the retraction of the cutter 703 or the peeling finger 803.

[0046] Rollers 903 are rotatably connected to the movable piece 901. Two sets of rollers 903 are slidably disposed within two annular tracks 904. The annular tracks 904 are ring-shaped components with annular raceways on their inner walls that mate with the rollers 903. The rollers 903 are embedded in these raceways and can roll within them, while simultaneously forming a limiting fit with the annular tracks 904 in the axial direction. The two annular tracks 904 are respectively fitted around the outer circumference of the first rotating ring 5 and the second rotating ring 6, and are coaxially arranged with the corresponding rotating rings. The annular tracks 904 remain stationary in the circumferential direction relative to the first fixed ring 1, but are movable in the axial direction.

[0047] The flanges on one side of the two annular tracks 904 are threadedly connected to a double-acting screw 905. The double-acting screw 905 is rotatably connected to the base 10 via a bearing seat. The double-acting screw 905 is connected to a feed adjustment motor 16 mounted on the base 10 via a coupling. The flanges on the other side of the two annular tracks 904 are slidably connected to a guide rod 906. The double-acting screw 905 is a screw with opposite threads at both ends. The two annular tracks 904 are respectively engaged with two sections of opposite threads on the double-acting screw 905. Since the two annular tracks 904 are also slidably connected to the guide rod 906, the guide rod 906 is fixedly mounted on the base 10 parallel to the double-acting screw 905. This guide rod is used to constrain the two annular tracks 904 to move only along the axial direction of the double-acting screw 905 and the guide rod 906 and not to rotate with them. In some embodiments, the wing plates on both sides of the two annular tracks 904 are threadedly connected to different bidirectional lead screws 905, and the feed adjustment motor 16 drives the two bidirectional lead screws 905 to rotate synchronously through the transmission assembly, which can improve the smoothness of the movement of the two annular tracks 904 and further optimize the transmission process of the feed assembly pushing the first telescopic rod 702 and the second telescopic rod 802.

[0048] In this embodiment, the feed adjustment motor 16 is a servo motor. Its rotation angle and speed are manually controlled by the operator through control buttons or knobs. The operator can send start, stop and forward / reverse commands to the feed adjustment motor 16 according to the specific model of the steel-cored aluminum stranded wire to be processed and the current number of stripping layers, so as to precisely control the axial displacement of the two annular tracks 904, and then control the radial feed of the cutter 703 and the stripping finger 803, thereby indirectly and precisely controlling the feed amount. When the feed regulating motor 16 drives the bidirectional lead screw 905 to rotate, due to the circumferential constraint of the guide rod 906, the two annular tracks 904 cannot rotate with the lead screw, but instead produce linear displacement along the axial direction of the lead screw. Since the two sections of the thread of the bidirectional lead screw 905 rotate in opposite directions, the two annular tracks 904 also move in opposite directions. That is, when the bidirectional lead screw 905 rotates in one direction, the two annular tracks 904 move towards each other and get closer; when the bidirectional lead screw 905 rotates in the opposite direction, the two annular tracks 904 move away from each other and move further apart.

[0049] When the annular track 904 moves axially, the annular raceway on its inner wall rolls in contact with the roller 903. The axial displacement of the annular track 904 pushes the moving piece 901 to slide radially along the groove through the roller 903. This transmission process has the following characteristics: First, the rolling friction between the roller 903 and the annular track 904 replaces the sliding friction, significantly reducing transmission resistance and wear, and improving transmission efficiency and service life. Second, the annular track 904 is a complete annular structure. No matter what angle the first rotating ring 5 or the second rotating ring 6 rotates to, the roller 903 is always within the raceway of the annular track 904, thus ensuring that the conversion from axial displacement to radial displacement is always continuous and smooth during the continuous rotation of the rotating ring. In addition, the annular track 904 can only translate along the length of the conductor, and its axial movement does not affect the free rotation of the rotating ring, realizing the "separation of dynamic and static" transmission design.

[0050] In this embodiment, for steel-cored aluminum stranded wires of different models and with different numbers of aluminum strands, the radial thickness of each layer of aluminum strands is known and determined. Operators can conduct limited experiments on commonly used models of steel-cored aluminum stranded wire. For example, they can take a section of that model of steel-cored aluminum stranded wire, manually operate the feed assembly 9 to feed the cutter 703 radially in successive cycles, observe the cutting effect after each feed, until the cutter 703 precisely cuts the current layer of aluminum stranded wire without damaging the next layer, and record the total amount of feed and the feed amount for each cycle. The radial feed amount of the cutter 703 and the stripping finger 803 corresponding to each layer of aluminum stranded wire for each model of steel-cored aluminum stranded wire can be pre-determined and recorded. The above feed amount data can be compiled into an operating parameter reference table for operators to consult during formal operations. Since the radial thickness of each layer of aluminum stranded wire in steel-cored aluminum stranded wire has a defined standard, the above experiment can be completed without any creative effort.

[0051] Example 3

[0052] The main structure of this embodiment is the same as that in embodiment 1, except that the end of the second fixing ring 2 away from the first fixing ring 1 is flared. The inner diameter of the rear end of the second fixing ring 2 gradually increases along the axial direction, forming a trumpet-shaped flared flow guiding structure. After the aluminum strip is stripped, this flared structure provides a smooth discharge channel for the stripped aluminum strip waste. Under the action of centrifugal force and tossing action of the reverse rotation of the stripping finger 803, the aluminum strip waste slides smoothly out along the flared slope and falls into the collection box 12, effectively avoiding the accumulation of aluminum chips at the outlet end of the second fixing ring 2 or the entanglement of rotating parts, ensuring the reliability of the equipment for long-term continuous operation.

[0053] Working principle: S1: The steel-cored aluminum stranded wire is fed into the first fixed ring 1 by the conveying assembly 11 and passes through the first rotating ring 5, the second rotating ring 6 and the second fixed ring 2 in sequence until it extends a suitable distance from the cutter 703, so that the stripped aluminum stranded wire and the specified exposed length of the steel core are equal. The hydraulic cylinder 3 pushes the clamping block 4 to tighten radially, fixing the wire circumferentially and ensuring that its axis coincides with the axis of the rotating ring, thus completing the clamping and fixing action; S2: Start the first power motor 13, the second power motor 14 and the feed adjustment motor 16. The first power motor 13 and the second power motor 14 drive the first rotating ring 5 and the second rotating ring 6 to rotate through the transmission component 15. The first rotating ring 5 and the second rotating ring 6 drive the cutting component 7 and the peeling component 8 to rotate in opposite directions. At the same time, the output shaft of the feed adjustment motor 16 drives the bidirectional lead screw 905 to rotate slowly, driving the two annular tracks 904 to move towards each other. Through the roller 903, the moving piece 901 is pushed to move along the slide groove on the first rotating ring 5 and the second rotating ring 6. In this process, the rotation of the first rotating ring 5 and the second rotating ring 6 is not affected. The horizontal movement of the moving piece 901 pushes the first telescopic rod 702 and the second telescopic rod 802 through the connecting rod 902. At the same time, it drives all the cutters 703 and peeling fingers 803 to feed radially towards the center. Each feed amount is the value of the diameter of a single aluminum wire. S3: Since the radial feed amount does not exceed the radial thickness of the current layer of aluminum stranded wire, a gap will be formed between the stripping finger 803 and the wire surface after the aluminum stranded wire layer is completely stripped. The stripping finger 803 will have an idle working condition when it continues to rotate, and will not contact the steel core or aluminum stranded wire of the next layer. Under this condition, the operator can determine how many layers of aluminum stranded wire there are according to the model of the steel core aluminum stranded wire, and determine the number of feeds, so as to perform layer-by-layer stripping until all aluminum stranded wires are stripped. It can also ensure that the cutter 703 will not contact the next layer of aluminum stranded wire or steel core when the stripping finger 803 strips the aluminum stranded wire each time, so as to reliably and efficiently complete the aluminum stranded wire cutting and stripping action.

[0054] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An adaptive stripping device for multiple types of steel-cored aluminum stranded wire, comprising a first fixing ring (1) disposed on a base (10), wherein a plurality of hydraulic cylinders (3) arranged in a ring are installed inside the first fixing ring (1), and the output end of each hydraulic cylinder (3) is fixedly connected to a clamping block (4) for circumferentially fixing the steel-cored aluminum stranded wire, characterized in that: A second fixed ring (2) is coaxially arranged on one side of the first fixed ring (1). A first rotating ring (5) and a second rotating ring (6) are respectively rotatably connected to the surfaces opposite to the first fixed ring (1) and the second fixed ring (2). The inner side of the first rotating ring (5) is provided with several ring-shaped cutting components (7) evenly distributed, and the inner side of the second rotating ring (6) is provided with several ring-shaped peeling components (8). The cutting assembly (7) includes a cutter (703) that is radially slidable along the first rotating ring (5); The peeling assembly (8) includes peeling fingers (803) that are radially slidable along the second rotating ring (6); A feeding assembly (9) is provided between the cutter (703) and the peeling finger (803). The feeding assembly (9) is used to push and pull the cutter (703) and the peeling finger (803) to move radially along the first fixed cylinder (701) and the second fixed cylinder (801), and can rotate with its corresponding first rotating ring (5) or second rotating ring (6) when moving. The first rotating ring (5) and the second rotating ring (6) are connected to the power assembly through the transmission component (15) and rotate in opposite directions.

2. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 1, characterized in that: The feeding assembly (9) includes two sets of symmetrically arranged movable plates (901). The two sets of movable plates (901) are slidably connected to the first rotating ring (5) and the second rotating ring (6) in the radial grooves. The movable plates (901) are hinged with connecting rods (902). The two sets of connecting rods (902) are connected to the cutter (703) and the peeling finger (803) respectively. The first rotating ring (5) is slidably connected to the first telescopic rod (702) through the first fixed cylinder (701). The first telescopic rod (702) is hinged to one of the connecting rods (902), and the cutter (703) is installed at the free end of the first telescopic rod (702). The second rotating ring (6) is slidably connected to the second telescopic rod (802) through the second fixed cylinder (801). The second telescopic rod (802) is hinged to another set of connecting rods (902), and the peeling finger (803) is installed at the free end of the second telescopic rod (802).

3. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 2, characterized in that: Rollers (903) are rotatably connected to the movable plate (901). Two sets of rollers (903) are slidably arranged in two annular tracks (904). The two annular tracks (904) are respectively fitted around the outer circumference of the first rotating ring (5) and the second rotating ring (6) and are coaxially arranged. The wing plate on one side of the two annular tracks (904) is threadedly connected to a two-way screw (905). The two-way screw (905) is rotatably connected to the base (10) through a bearing seat. The two-way screw (905) is connected to a feed adjustment motor (16) arranged on the base (10) through a coupling. The wing plate on the other side of the two annular tracks (904) is slidably connected to a guide rod (906).

4. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 1, characterized in that: The distance between the end of the stripping finger (803) and the axis of the first fixing ring (1) is greater than the distance between the end of the cutter (703) and the axis of the first fixing ring (1), and the distance difference is 37%-54% of a single aluminum strand.

5. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 2, characterized in that: The peeling finger (803) includes a rectangular portion, which is fixedly connected to the end of the second telescopic rod (802). The rectangular portion is provided with a hook-shaped protrusion facing the center of the first rotating ring (5) to form a hook-shaped portion. The distance between the end of the hook-shaped protrusion and the rectangular portion gradually increases from one side to the other.

6. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 5, characterized in that: The rectangular portion and the hook-shaped portion extend toward the cutter (703) and beyond the end of the second telescopic rod (802).

7. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 1, characterized in that: The cutting blade (703) has a beveled edge or a circular arc edge.

8. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 1, characterized in that: The base (10) is provided with a conveying assembly (11) and a collection box (12) on its top. The conveying assembly (11) is located on the side of the first fixing ring (1) away from the second fixing ring (2), and the collection box (12) is located on the side of the second fixing ring (2) away from the first fixing ring (1).

9. The adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 8, characterized in that: The second fixing ring (2) has a flared end facing the collection box (12).

10. An adaptive stripping device for multiple types of steel-cored aluminum stranded wire according to claim 1, characterized in that: The clamping blocks (4) on adjacent hydraulic cylinders (3) are arranged in an alternating pattern.

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