Power cable twisted wire processing device with anti-damage tension adjusting mechanism

Abstract

The invention discloses a power cable wire twisting processing device with an anti-damage tension adjusting mechanism, relates to the technical field of cable wire twisting, and aims to improve a sub-wire conduction process in a power cable wire twisting process, specifically, a post-position wire changing process and a pre-position wire clamping process in the sub-wire conduction process. The essence of the post-position wire changing process is that the bending degree of the sub-wires is changed through a plurality of guide wheel groups on the basis of not interfering the normal conduction of the sub-wires, the sub-wires are cooperatively matched with the number of the sub-wires, and the motion form of the guide wheel groups is changed by utilizing the tension change in the sub-wire conduction process; therefore, the tension fluctuation degree possibly existing at a certain position is equally borne by all the sub-wires, the situation that the overall wire twisting process is affected by large tension fluctuation of a single sub-wire is avoided, the front wire clamping process does not interfere with the winding process of the sub-wires, the change of magnetic force is improved into the clamping force of the permanent magnet beads on the sub-wires, the wire twisting quality of the sub-wires is maintained, and the wire twisting quality of the sub-wires is improved. And the two groups of processes cooperate to finish wire twisting.

Description

Technical Field

[0001] The present invention relates to the technical field of cable stranding, and specifically relates to a power cable stranding processing device with an anti-damage tension adjusting mechanism. Background Art

[0002] The process of power cable stranding is described as follows: multiple conductor single wires are stranded according to specific rules. Specifically, reference can be made to the stranding machines mentioned in the patent publication numbers CN117936194A and CN119340038A. Multiple conductor single wires are conducted synchronously with circular motion to complete the stranding.

[0003] When the diameter and quantity of the conductor single wires are fixed values, the rotational speed and traction speed during the stranding process are one of the key factors affecting the stranding quality. The purpose is to ensure that the conductor single wires are tightly stranded. In this process, it is necessary to ensure that the conductor single wires are in a relatively straight state. However, it should be noted that if the conductor single wires are overly straightened, it will cause problems such as elastic deformation and even irreversible tensile damage to the conductor single wires. But if it is difficult to maintain the straight state of the conductor single wires, it will also affect the subsequent stranding quality, such as problems like loose wire cores, local bulges, and jumper wires. Specifically, it is reflected in the tension control process of the conductor single wires. However, in the conventional stranding processing, multiple conductor single wires need to cooperate with each other, and the tension fluctuation of one conductor single wire will also affect the stranding quality of one or more conductor single wires in other positions. For this, the present invention proposes a solution. Summary of the Invention

[0004] The purpose of the present invention is to provide a power cable stranding processing device with an anti-damage tension adjusting mechanism. For the stranding processing of power cables, problems such as loose wire cores, local bulges, and jumper wires may occur due to the tension change of the conductor single wires. Therefore, specifically, in the process of tension regulation of the conductor single wires, but in actual operation, multiple conductor single wires need to cooperate with each other, and the stranding process of a single conductor single wire will directly affect the overall stranding process.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A power cable stranding processing device with an anti-damage tension adjusting mechanism includes a rotating base, a wire threading frame, and a traction base. The power cable is conducted in the direction from the wire threading frame to the traction base. A front clamping wire group is arranged between the traction base and one end of the wire threading frame, and a rear wire changing group is arranged at the other end of the wire threading frame; The rear wire-changing group is composed of a fixed guide wheel group, a pressure-bearing guide wheel group, and a voltage-changing guide wheel group. The fixed guide wheel group and the pressure-bearing guide wheel group are rotatably connected, and the center points of the fixed guide wheel group and the pressure-bearing guide wheel group are not on the same linear axis. The pressure-bearing guide wheel group and the voltage-changing guide wheel group are tangent to each other. The sub-wire in the power cable is located between the pressure-bearing guide wheel group and the voltage-changing guide wheel group. The front wire-clamping group includes a wire guide cone, an energized electromagnetic ring group, and a wire-pressing cone sleeve. The sub-wire in the power cable is located at the middle position between the wire guide cone and the wire-pressing cone sleeve. The wire guide cone, the wire-pressing cone sleeve, and the wire-passing frame rotate synchronously.

[0006] It is further set that: the wire-passing frame rotates at a constant speed in a fixed direction on the rotating base. The bus wire in the power cable passes through the center point position of the wire-passing frame. An installation table is arranged between the wire-passing frame and the traction base. The energized electromagnetic ring group is fixedly installed on the installation table. A gear transmission structure is arranged on the installation table. The wire-pressing cone sleeve is rotatably connected to the installation table through the gear transmission structure.

[0007] It is further set that: the wire-pressing cone sleeve is located at the outer wall position of the wire guide cone, and small wire grooves and large wire grooves corresponding to the sub-wire are respectively arranged on the outer wall of the wire-pressing cone sleeve and the inner wall of the wire guide cone. The energized electromagnetic ring group is located at the outer wall position of the wire-pressing cone sleeve.

[0008] It is further set that: the inner diameter of the small wire groove is equal to the outer diameter of the sub-wire, the inner diameter of the large wire groove is larger than the outer diameter of the sub-wire. A directional sliding sleeve perpendicular to the outer surface of the wire guide cone is installed at the position of the large wire groove on the wire-pressing cone sleeve. The directional sliding sleeves are linearly arranged at equal intervals along the length direction of the large wire groove.

[0009] It is further set that: permanent magnet beads cooperating with the energized electromagnetic ring group are arranged in the directional sliding sleeve, and an opening corresponding to the permanent magnet beads is arranged at the lower end position of the directional sliding sleeve, and the diameter of the opening is smaller than the outer diameter of the permanent magnet beads.

[0010] It is further set that: the fixed guide wheel group is fixedly connected to the wire-passing frame, the voltage-changing guide wheel group is slidably connected to the wire-passing frame, and the sliding direction of the voltage-changing guide wheel group is an arc matching the center point of the wire-passing frame.

[0011] It is further set that: the number of the rear wire-changing groups is matched with the number of the sub-wires of the power cable. A pressure-bearing spring frame is installed between the voltage-changing guide wheel group and the pressure-bearing guide wheel group in the adjacent rear wire-changing groups. The pressure-bearing spring frames are symmetrically arranged along the conduction direction of the power cable, and the pressure-bearing spring frames are bent in an arch shape in the direction away from each other.

[0012] Further set as: small liquid sleeves matching the conduction direction of the power cable are installed at the middle positions of the two pressure-bearing spring frames, piston guide rods corresponding to the pressure-bearing spring frames are arranged at both ends of the small liquid sleeves, an oil cavity is formed in each small liquid sleeve, and oil rings are connected between each oil cavity.

[0013] The present invention has the following beneficial effects: 1. Improve the stranding process in the power cable. First, at the rear position in the overall device, the conduction direction of the sub-line is changed through multiple guide wheel groups. Essentially, the pressure-bearing guide wheel group and the voltage-changing guide wheel group change the conduction direction of the sub-line to an inclined shape, and the conduction direction of the sub-line is maintained horizontally by the fixed guide wheel group. The key lies in that when obvious tension fluctuations occur in a certain sub-line, the pressure-bearing guide wheel group and the voltage-changing guide wheel group will have relative displacements of sliding or rotation, and the sub-line is always located between the pressure-bearing guide wheel group and the voltage-changing guide wheel group. However, further, a pressure-bearing spring frame is arranged between the pressure-bearing guide wheel group and the voltage-changing guide wheel group at adjacent positions. The pressure-bearing spring frame undergoes an adaptive bending deformation due to their relative displacements, and the communication between each small liquid sleeve is maintained through the liquid ring, thereby changing the distribution process of media such as hydraulic oil in the small liquid sleeve. Thus, without interfering with the normal conduction of the sub-line, the bending degree of the sub-line is changed through multiple groups of guide wheel groups, and the movement form of the guide wheel group is changed by using the tension change in the conduction process of the sub-line, so as to "equally share" the possible tension fluctuation degree at a certain place by all the sub-lines, avoiding large tension fluctuations in a single sub-line from affecting the overall stranding process; 2. The front-position wire clamping process will not affect the winding process of the sub-line, thus ensuring that the wire cone, the wire clamping cone sleeve and the wire threading frame rotate synchronously. By using the positions of the wire cone, the wire clamping cone sleeve and the wire threading frame to always clamp the sub-line, the key lies in the large wire groove arranged in the wire clamping cone sleeve. The large wire groove does not completely match the diameter of the sub-line. Specifically, the permanent magnetic beads in the directional sliding sleeve are used to clamp the sub-line, and the sub-line is completely "locked" on the wire cone. And by increasing the energized current in the energized electromagnetic ring group during the rear-position wire changing process, the repulsive force of the permanent magnetic beads is increased, thereby further driving the permanent magnetic beads closer to the sub-line. Essentially, it is to improve the clamping force of the permanent magnetic beads on the sub-line by using the change of magnetic force, so as to maintain the stranding quality of the sub-line, and complete the stranding through the coordinated cooperation of the front and rear two groups of processes. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1Structural schematic diagram of a power cable stranding processing device with a damage-proof tension adjustment mechanism proposed by the present invention; Figure 2 In the present invention Figure 1 Side view; Figure 3 Structural schematic diagram of the rear wire-changing group in the present invention; Figure 4 In the present invention Figure 3 Partial schematic diagram; Figure 5 In the present invention Figure 4 Front view; Figure 6 In the present invention Figure 4 Sectional view of the small liquid sleeve; Figure 7 Exploded view of the front wire clamping group in the present invention; Figure 8 In the present invention Figure 7 Structural schematic diagram of the pressure wire cone sleeve; Figure 9 In the present invention Figure 8 Sectional view of the directional sliding sleeve.

[0016] In the figure: 1, rotating base; 2, wire threading frame; 3, traction base; 4, fixed guide wheel group; 5, pressure-bearing guide wheel group; 6, variable pressure guide wheel group; 7, pressure wire cone sleeve; 8, energized electromagnetic ring group; 9, wire cone table; 10, small liquid sleeve; 11, oil ring; 12, pressure-bearing spring frame; 13, small wire groove; 14, large wire groove; 15, directional sliding sleeve; 16, permanent magnetic bead; 17, mounting table. Specific embodiments

[0017] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0018] Embodiment 1: For the stranding process of power cables, problems such as loose wire cores, local bulges, and jumper wires may occur due to the tension change of the conductor single wires. Therefore, specifically, during the tension control process of the conductor single wires, but in actual operations, multiple conductor single wires need to cooperate with each other, and the stranding process of a single conductor single wire will directly affect the overall stranding process. For this reason, the following technical solutions are proposed: Refer to Figures 1 to 9, A power cable stranding processing device with a damage-proof tension adjustment mechanism in this embodiment includes a rotating base 1, a wire threading frame 2, and a traction base 3. The power cable is conducted in the direction from the wire threading frame 2 to the traction base 3. A front clamping wire group is arranged between the traction base 3 and one end of the wire threading frame 2, and a rear wire changing group is arranged at the other end of the wire threading frame 2; The rear wire changing group is composed of a fixed guide wheel group 4, a pressure-bearing guide wheel group 5, and a voltage-changing guide wheel group 6. The fixed guide wheel group 4 and the pressure-bearing guide wheel group 5 are rotatably connected, and the center points of the fixed guide wheel group 4 and the pressure-bearing guide wheel group 5 are not on the same linear axis. The pressure-bearing guide wheel group 5 and the voltage-changing guide wheel group 6 are tangent to each other. The sub-wires in the power cable are located between the pressure-bearing guide wheel group 5 and the voltage-changing guide wheel group 6; The front clamping wire group includes a wire guiding frustum 9, an energized electromagnetic ring group 8, and a wire pressing cone sleeve 7. The sub-wires in the power cable are located in the middle position between the wire guiding frustum 9 and the wire pressing cone sleeve 7. The wire guiding frustum 9 and the wire pressing cone sleeve 7 rotate synchronously with the wire threading frame 2. The wire threading frame 2 rotates directionally and uniformly on the rotating base 1. The bus bars in the power cable pass through the center point position of the wire threading frame 2. An installation table 17 is arranged between the wire threading frame 2 and the traction base 3. The energized electromagnetic ring group 8 is fixedly installed on the installation table 17. A gear transmission structure is arranged on the installation table 17. The wire pressing cone sleeve 7 is rotatably connected to the installation table 17 through the gear transmission structure.

[0019] Basic principle: Briefly explain the stranding processing process of the power cable: Its essence is to use a stranding machine. Among them, the bus bars pass through the central point area of the wire threading frame 2 in a traction manner, while the sub-wires pass through the outer part of the wire threading frame 2. Specifically, at the traction base 3, the sub-wires are continuously wound around the bus bars at the traction base 3. During the overall traction conduction process, the tension of the sub-wires may change due to parameters such as the traction speed and the rotation speed. Therefore, the present invention specifically optimizes and improves the initial position of the sub-wire conduction and the winding process, specifically manifested in the rear wire changing process and the front clamping wire process. Its essence is to preferentially regulate the tension change of each sub-wire and secondly ensure the clamping force during the winding process; Because the bus bars are conducted horizontally in the wire threading frame 2, and the center point of the bus bars and the center point of the wire threading frame 2 are on the same horizontal axis. To maintain the stranding quality, it is also necessary to ensure that the wire threading points of the corresponding bus bars / sub-wires in the traction base 3 are also on the same horizontal axis as the center point of the wire threading frame 2. And the front clamping wire group is located in the middle position between the traction base 3 and the wire threading frame, and it is also necessary to further maintain the installation position of the front clamping wire group relative to the installation table 17, which is also to ensure that the center point positions of the wire guiding frustum 9, the energized electromagnetic ring group 8, and the wire pressing cone sleeve 7 in the front clamping wire group are also on the same horizontal axis as the center point of the bus bars.

[0020] Embodiment Two: The following is an explanation of the rear wire changing process: The fixed guide wheel set 4 is fixedly connected to the wire threading frame 2. The variable pressure guide wheel set 6 is slidably connected to the wire threading frame 2, and the sliding direction of the variable pressure guide wheel set 6 is an arc matching the center point of the wire threading frame 2. The set number of the rear wire changing groups is matched with the set number of the power cable sub-lines. Between the variable pressure guide wheel set 6 and the pressure bearing guide wheel set 5 in the adjacent rear wire changing groups, a pressure bearing spring frame 12 is installed. The pressure bearing spring frame 12 is symmetrically arranged along the power cable conduction direction, and the pressure bearing spring frame 12 is bent in an arch shape along the mutually away direction. A small liquid sleeve 10 matching the power cable conduction direction is installed at the middle position of the two pressure bearing spring frames 12. Piston guide rods corresponding to the pressure bearing spring frames 12 are arranged at both ends of the small liquid sleeve 10, and an oil cavity is opened in the small liquid sleeve 10. An oil ring 11 is connected between each oil cavity.

[0021] Solution description: Refer to Figures 3 to 6 for description. In the conventional method, the sub-line passes through the wire threading frame 2 in a completely horizontal direction. When conducting continuously in this way, it is difficult to detect the tension change of the sub-line in time. For this reason, in this embodiment, a fixed guide wheel set 4, a pressure bearing guide wheel set 5, and a variable pressure guide wheel set 6 are improved for the sub-line conduction process. The three are essentially wire guide wheels. The fixed guide wheel set 4 is installed in a fixed manner, and its purpose is to maintain that the sub-line still passes through the wire threading frame 2 in a completely horizontal direction. However, the settings of the pressure bearing guide wheel set 5 and the variable pressure guide wheel set 6 are in the opposite direction to the corresponding power cable traction process of the fixed guide wheel set 4; Taking Figure 4 as an example, the sub-line does not remain completely horizontal between the pressure bearing guide wheel set 5 and the fixed guide wheel set 4. Specifically, the variable pressure guide wheel set 6 "presses" the sub-line on the pressure bearing guide wheel set 5, so that the sub-line has a certain arc during the conduction process. Combining Figure 4 with the setting directions of the three, the setting directions of the pressure bearing guide wheel set 5 and the variable pressure guide wheel set 6 relative to the wire threading frame 2 are counterclockwise. Then when a certain sub-line has an obvious tension change, the variable pressure guide wheel set 6 shows a sliding trend along the counterclockwise direction on the wire threading frame 2; Further explanation in combination with the above content is: When the tension on the sub-line has an increasing trend, a pressure bearing spring frame 12 is arranged between the adjacent pressure bearing guide wheel set 5 and the variable pressure guide wheel set 6. Then when the variable pressure guide wheel set 6 slides along the counterclockwise direction on the wire threading frame 2, the force transmission process of the pressure bearing spring frame 12 will further generate a "thrust" in the counterclockwise direction on the adjacent pressure bearing guide wheel set 5, resulting in a rotational trend of the pressure bearing guide wheel set 5 on the fixed guide wheel set 4. Thus, there is a relative displacement process of sliding and rotation between the pressure bearing guide wheel set 5 and the variable pressure guide wheel set 6. Because the set number of the overall rear wire changing components is exactly the same as the number of sub-lines, the pressure bearing spring frame 12 can connect each rear wire changing component into an integrated structure, resulting in the mutual cooperation of each rear wire changing component; Specifically, when the voltage-changing guide wheel set 6 at a certain position slides counterclockwise under the change of the sub-line tension, the force transmission process through the pressure-bearing spring frame 12 will also drive the pressure-bearing guide wheel set 5 in the next rear wire-changing component to rotate on the fixed guide wheel set 4. Conversely, when the tension of a certain sub-line shows a decreasing trend, the "thrust" on the voltage-changing guide wheel set 6 decreases. Then, through the force transmission process of the pressure-bearing spring frame 12 - pressure-bearing guide wheel set 5, the voltage-changing guide wheel set 6 in the adjacent position further balances the tension change of this sub-line, which will also affect the voltage-changing guide wheel set 6 in the next-next rear wire-changing component. It can be directly understood that when there is an obvious tension change in a certain sub-line, it will change the sub-line conduction process in other positions in a mutually coordinated direction to avoid the problem of slack or over-stretching of this sub-line due to tension change; Further restrict the setting direction and bending direction of the pressure-bearing spring frame 12. Its essence is to restrict the pressure-bearing spring frame 12 to only bend and deform along the traction direction of the power cable. Taking Figure 4 as an example, when the voltage-changing guide wheel set 6 therein approaches the pressure-bearing guide wheel set 5 in another position, then the two pressure-bearing spring frames 12 can only bend and deform outward simultaneously. In this regard, during the installation process, after installing multiple rear wire-changing components, each pressure-bearing spring frame 12 is already in the deformation process and has a reset tendency towards the small liquid sleeve 10. In this regard, the two piston guide rods slide in the same direction inside the small liquid sleeve 10, squeezing out the hydraulic oil medium in the oil chamber. However, because each small liquid sleeve 10 is connected through the oil ring 11, the squeezed hydraulic oil medium will be "equally distributed" to the small liquid sleeves 10 in other positions, thereby further improving the coordination of each rear wire-changing component.

[0022] Embodiment 3: Based on Embodiment 2, the front wire-clamping process is described as follows: The wire-pressing cone sleeve 7 is located on the outer wall of the wire cone table 9, and small wire grooves 13 and large wire grooves 14 corresponding to the sub-lines are respectively formed on the outer wall of the wire-pressing cone sleeve 7 and the inner wall of the wire cone table 9. The energized electromagnetic ring group 8 is located on the outer wall of the wire-pressing cone sleeve 7. The inner wall diameter of the small wire groove 13 is equal to the outer diameter of the sub-line, and the inner wall diameter of the large wire groove 14 is greater than the outer diameter of the sub-line. A directional sliding sleeve 15 perpendicular to the outer surface of the wire cone table 9 is installed at the position of the wire-pressing cone sleeve 7 corresponding to the large wire groove 14. The directional sliding sleeves 15 are linearly and equidistantly arranged along the length direction of the large wire groove 14. Permanent magnet beads 16 cooperating with the energized electromagnetic ring group 8 are arranged in the directional sliding sleeves 15, and an opening corresponding to the permanent magnet beads 16 is formed at the lower end position of the directional sliding sleeve 15, and the diameter of the opening is smaller than the outer diameter of the permanent magnet beads 16.

[0023] Scheme description: Refer to Figures 7 to 9It will be described that the sub - wires are wound around the main wire in a form of gradually approaching each other. For this, a wire cone 9 is added to cooperate with the tilting process of the sub - wires. Its essence is to open small wire grooves 13 on the wire cone 9 that exactly match the sub - wires. And the wire cone 9 is installed on the wire threading frame 2 so that it can rotate synchronously. Therefore, the sub - wires will not break away from the small wire grooves 13. The inner wall of the pressure - wire cone sleeve 7 exactly matches the outer wall of the wire cone 9 and also rotates synchronously. However, the inner diameter of the large wire groove 14 on the pressure - wire cone sleeve 7 is slightly larger than the diameter of the sub - wires. In order to stably maintain the position of the sub - wires on the wire cone 9, it is not the large wire groove 14 that maintains the position of the sub - wires; The key lies in: the extrusion force of the permanent - magnet beads in the directional sliding sleeve 15 on the sub - wires. For this, it is necessary to ensure that each directional sliding sleeve 15 is arranged in a direction exactly perpendicular to the outer wall of the wire cone 9. Since the pressure - wire cone sleeve 7 and the wire cone 9 rotate synchronously, each directional sliding sleeve 15 can also be understood as being perpendicular to the sub - wires. For this, when the pressure - wire cone sleeve 7 rotates, by energizing the energized electromagnetic ring group 8, a repulsive force is always generated between the permanent - magnet beads 16 and the energized electromagnetic ring group 8, resulting in a moving process of approaching the sub - wires. However, it is necessary to ensure that the permanent - magnet beads 16 do not break away from the directional sliding sleeve 15, so as to limit the diameter of the opening at the lower end position of it. It is necessary to ensure that part of the permanent - magnet beads 16 protrude from the opening and do not completely break away; This can be directly understood as: the repulsive force of the permanent - magnet beads 16 can be increased by increasing the energizing circuit of the energized electromagnetic ring group 8, and the pressing force on the sub - wires can be increased to maintain the position of the sub - wires before the winding action.

[0024] In summary: The conduction process of the sub - wires in the stranding process of power cables is improved. Specifically, it is manifested in the post - position wire - changing process and the pre - position wire - clamping process in the sub - wire conduction process. The essence of the post - position wire - changing process is to change the bending degree of the sub - wires through multiple groups of guide wheel sets on the basis of not interfering with the normal conduction of the sub - wires, and cooperate with the number of sub - wires for coordinated cooperation. Utilize the tension change in the sub - wire conduction process to change the motion form of the guide wheel sets, so that the possible tension fluctuation degree at a certain place is "equally shared" by all sub - wires, avoiding large tension fluctuations in a single sub - wire affecting the overall stranding process. The pre - position wire - clamping process does not interfere with the winding process of the sub - wires, but improves the clamping force of the permanent - magnet beads on the sub - wires by using the change of magnetic force, so as to maintain the stranding quality of the sub - wires. The front and rear two - group processes cooperate with each other to complete the stranding.

[0025] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A power cable stranding processing device with a damage-proof tension adjustment mechanism, comprising a rotating base (1), a wire threading frame (2) and a traction base (3), characterized in that, The power cable is conducted in the direction from the wire threading frame (2) to the traction base (3). A front wire clamping group is arranged between the traction base (3) and one end of the wire threading frame (2), and a rear wire changing group is arranged at the other end of the wire threading frame (2). The rear wire changing group is composed of a fixed guide wheel group (4), a pressure-bearing guide wheel group (5) and a voltage-changing guide wheel group (6). The fixed guide wheel group (4) and the pressure-bearing guide wheel group (5) are rotationally connected, and the center points of the fixed guide wheel group (4) and the pressure-bearing guide wheel group (5) are not on the same linear axis. The pressure-bearing guide wheel group (5) and the voltage-changing guide wheel group (6) are tangent to each other. The sub-wire in the power cable is located between the pressure-bearing guide wheel group (5) and the voltage-changing guide wheel group (6). The front wire clamping group includes a wire guiding frustum (9), an energized electromagnetic ring group (8) and a wire pressing cone sleeve (7). The sub-wire in the power cable is located at the middle position between the wire guiding frustum (9) and the wire pressing cone sleeve (7). The wire guiding frustum (9) and the wire pressing cone sleeve (7) rotate synchronously with the wire threading frame (2).

2. The wire twisting processing device for power cables with a damage-proof tension adjusting mechanism according to claim 1, characterized in that, The wire threading frame (2) rotates at a constant speed in a fixed direction on the rotating base (1). The bus bar in the power cable passes through the center point position of the wire threading frame (2). An installation table (17) is arranged between the wire threading frame (2) and the traction base (3). The energized electromagnetic ring group (8) is fixedly installed on the installation table (17). A gear transmission structure is arranged on the installation table (17). The wire pressing cone sleeve (7) is rotationally connected to the installation table (17) through the gear transmission structure.

3. The power cable stranding processing device with a damage-proof tension adjusting mechanism according to claim 1, characterized in that, The wire pressing cone sleeve (7) is located on the outer wall of the wire guiding frustum (9). Small wire grooves (13) and large wire grooves (14) corresponding to the sub-wire are respectively formed on the outer wall of the wire pressing cone sleeve (7) and the inner wall of the wire guiding frustum (9). The energized electromagnetic ring group (8) is located on the outer wall of the wire pressing cone sleeve (7).

4. A power cable stranding processing device with a damage prevention tension adjustment mechanism according to claim 3, characterized in that, The inner wall diameter of the small wire groove (13) is equal to the outer diameter of the sub-wire. The inner wall diameter of the large wire groove (14) is larger than the outer diameter of the sub-wire. A directional sliding sleeve (15) perpendicular to the outer surface of the wire guiding frustum (9) is installed at the position of the wire pressing cone sleeve (7) corresponding to the large wire groove (14). The directional sliding sleeves (15) are linearly arranged at equal intervals along the length direction of the large wire groove (14).

5. A power cable stranding processing device with a damage-proof tension adjustment mechanism according to claim 4, characterized in that, Permanent magnetic beads (16) cooperating with the energized electromagnetic ring group (8) are arranged in the directional sliding sleeve (15). An opening corresponding to the permanent magnetic beads (16) is formed at the lower end position of the directional sliding sleeve (15), and the diameter of the opening is smaller than the outer diameter of the permanent magnetic beads (16).

6. A power cable stranding processing device with a damage-proof tension adjustment mechanism according to claim 1, characterized in that, The fixed guide wheel group (4) is fixedly connected to the wire threading frame (2). The voltage-changing guide wheel group (6) is slidably connected to the wire threading frame (2), and the sliding direction of the voltage-changing guide wheel group (6) is an arc matching the center point of the wire threading frame (2).

7. An electric cable stranding processing device with a damage-proof tension adjusting mechanism according to claim 6, characterized in that, The number of the rear wire changing groups provided is matched with the number of the sub-wires of the power cable. A pressure-bearing spring frame (12) is installed between the voltage-changing guide wheel group (6) and the pressure-bearing guide wheel group (5) in the adjacent rear wire changing groups. The pressure-bearing spring frame (12) is symmetrically arranged along the conduction direction of the power cable, and the pressure-bearing spring frame (12) is bent in an arch shape along the direction of moving away from each other.

8. A power cable stranding processing device with a damage-proof tension adjusting mechanism according to claim 7, characterized in that, A small liquid sleeve (10) that matches the conduction direction of the power cable is installed at the middle section of the two pressure-bearing spring frames (12). Piston guide rods corresponding to the pressure-bearing spring frames (12) are arranged at both ends of the small liquid sleeve (10), and an oil cavity is formed in the small liquid sleeve (10). Oil rings (11) are connected between each oil cavity.

Images