High-flame-retardance power cable and production equipment thereof

Abstract

The invention relates to the technical field of power cables, and discloses a high-flame-retardance power cable which comprises a cable core, a filling layer is arranged on the outer side of the cable core, a protective layer is arranged on the outer side of the filling layer, an armor layer and a protective layer are arranged on the outer side of the protective layer, buffer layers are arranged on the inner side of the protective layer at equal intervals, and the buffer layers are arranged on the outer side of the cable core. Flame-retardant layers are arranged between the armor layer and the protective layer, the flame-retardant layers prevent the cable core from being influenced by external high temperature and protect the cable core safety, the two groups of flame-retardant layers are mutually crossed and wound on the outer side of the protective layer, connection between the flame-retardant layers and the protective layer is enhanced, and dislocation of the flame-retardant layers and the protective layer is prevented. The cable core can be prevented from being influenced by external high temperature, the interior of the cable is prevented from being influenced by high temperature and the cable is prevented from burning, the two groups of flame-retardant layers are mutually crossed and wound outside the protective layer, the flame retardance of the cable is further improved, gaps are prevented from being generated during winding, and the adhesiveness of the flame-retardant layers on the cable is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and in particular to a highly flame-retardant power cable and production equipment thereof. Background Art

[0002] In modern society, electricity, as a basic energy source, is widely used in various fields such as industry, commerce, and residents' lives. Power cables are the key carriers of power transmission, and their performance directly affects the safe and stable operation of the power system.

[0003] Power cables often face complex and changeable working environments. Due to long-term high-load operation and short circuits, cables are prone to high temperatures. Once the temperature is too high, the cable insulation layer may be damaged, causing fire accidents. High temperatures, open flames and other factors in the external environment also pose severe challenges to the flame retardant properties of cables. However, the flame retardant structure design of common power cables on the market is not reasonable. The setting of the flame retardant layer is often difficult to effectively isolate the external high temperature, and it is impossible to prevent the fire from spreading in time when a fire occurs, resulting in paralysis of the power system, causing huge economic losses and safety hazards. Summary of the Invention

[0004] The object of the present invention is to provide a highly flame-retardant power cable and production equipment thereof, so as to solve the problems raised in the above background technology.

[0005] Technical Solution

[0006] The present invention provides the following technical solution: a highly flame-retardant power cable, comprising a cable core, a filling layer being provided on the outside of the cable core, a protective layer being provided on the outside of the filling layer, an armor layer and a protective layer being provided on the outside of the protective layer, a buffer layer being provided on the inside of the protective layer at equal intervals, a flame-retardant layer being provided between the armor layer and the protective layer, the flame-retardant layer preventing the cable core from being affected by external high temperatures, thereby protecting the safety of the cable core.

[0007] Preferably, the two groups of flame retardant layers are cross-wound around the outside of the protective layer to strengthen the connection between the flame retardant layer and the protective layer and prevent the flame retardant layer and the protective layer from being misaligned.

[0008] A production equipment for a highly flame-retardant power cable, which is used to produce a highly flame-retardant power cable, includes a workbench and a connecting sleeve. A cable core wrapped with a protective layer passes through the connecting sleeve. A cable core stabilizing assembly is provided on the workbench. The cable core stabilizing assembly is in contact with the cable core wrapped with the protective layer, thereby enhancing the stability of the flame-retardant layer when it is wrapped around the outside of the cable core and preventing the cable core from shaking when the flame-retardant layer is wrapped around the outside of the cable core.

[0009] The cable core stabilizing assembly includes a stabilizing wheel, which contacts the protective layer on the outer side of the cable core to provide stable support for the cable core wrapped with the protective layer and prevent the cable core from deflecting.

[0010] Preferably, the workbench is also provided with an insertion column, a motor and a rotating ring block. The insertion column passes through the workbench and is provided with a connecting box. A movable plate is provided in the connecting box. The movable plate is in contact with the stabilizing wheel. A first rotating gear is provided on the motor and is in contact with the rotating ring block through the first rotating gear.

[0011] Preferably, a gear column and a lead screw are provided in the connection box, the lead screw passes through the movable plate, a second rotating gear is provided on the outside of the lead screw, and the gear column is meshed and connected with the second rotating gear.

[0012] Preferably, an installation cavity and a contact groove are provided in the workbench, and a partition, a push column, a first rotating boss and a second rotating boss are provided in the installation cavity. A piston plate is provided at one end of the partition, and a transmission belt is provided between the first rotating boss and the second rotating boss, and the first rotating boss is in contact with the piston plate.

[0013] Preferably, a push rod is provided through the partition, one end of the push rod is in contact with the second rotating boss, and a first extrusion spring is provided at one end of the push rod.

[0014] Preferably, a vent hole is provided in the insert column, a piston column is provided in the insert column, and the other end of the piston column is in contact with the gear column.

[0015] Preferably, a limit box is provided on the insertion column, and a first plug-in column and a second plug-in column are provided on the limit box. A limit groove matching the push rod is opened in the second plug-in column, and the limit groove is inclined. The first plug-in column extends into the contact groove and contacts the push rod.

[0016] Preferably, the limit box is provided with a first connecting plate, a second connecting plate and a sliding plate, and the sliding plate is in contact with the first plug-in column.

[0017] Beneficial effects

[0018] Compared with the prior art, the present invention provides a highly flame-retardant power cable and production equipment thereof, which has the following beneficial effects:

[0019] 1. In the present invention, the cable is provided with a flame retardant layer, which can prevent the cable core from being affected by external high temperature, prevent the inside of the cable from being affected by high temperature and prevent the cable from burning. The two groups of flame retardant layers are cross-wound around the outside of the protective layer, further increasing the flame retardancy of the cable, while preventing gaps from being generated during winding, and strengthening the adhesion of the flame retardant layer to the cable.

[0020] 2. In the present invention, a buffer layer is arranged at equal intervals on the inner side of the protective layer, an armor layer and a protective layer are arranged in sequence on the outer side of the protective layer, and the filling layer wraps the cable core. This multi-layer structure design ensures the stability of the overall structure of the cable and can better protect the safety of the cable core.

[0021] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0022] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 This is a cross-sectional view of a highly flame-retardant power cable according to the present invention;

[0025] Figure 2 Schematic diagram of the production equipment for the high flame retardant power cable of the present invention Figure 1 ;

[0026] Figure 3 Schematic diagram of the production equipment for the high flame retardant power cable of the present invention Figure 2 ;

[0027] Figure 4 It is a partial cross-sectional view of the workbench of the present invention;

[0028] Figure 5 This is a top view of the mounting cavity of the present invention;

[0029] Figure 6 This is a cross-sectional view of the connection between the mounting cavity and the insertion column of the present invention;

[0030] Figure 7 A cross-sectional view of the first plug-in post and the second plug-in post of the present invention;

[0031] Figure 8 This is a diagram of the interior of the connection box of the present invention;

[0032] Figure 9 This is an internal diagram of the limit box of the present invention;

[0033] Figure 10 This is a schematic diagram of the flame retardant layer of the present invention being wrapped around the outside of the protective layer.

[0034] Description of reference numerals:

[0035] In the figure: 1. cable core; 2. filling layer; 3. protective layer; 4. flame retardant layer; 5. armor layer; 6. shielding layer; 7. buffer layer; 8. workbench; 9. motor; 10. rotating ring block; 11. insertion column; 12. first rotating gear; 13. connecting sleeve; 14. connecting box; 15. stabilizing wheel; 16. limit box; 17. first plug-in column; 18. second plug-in column; 19. installation cavity; 20. partition; 21. piston plate; 22. vent; 23. piston column; 24. push column; 25. first rotating boss; 26. transmission belt; 27. second rotating boss; 28. first extrusion spring; 29. ​​push rod; 30. limit groove; 31. contact groove; 32. tooth column; 33. screw; 34. moving plate; 35. second rotating gear; 36. first connecting plate; 37. second connecting plate; 38. sliding plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example:

[0038] See also Figure 1 The present invention provides a technical solution: a highly flame-retardant power cable, comprising a cable core 1, a filling layer 2 wrapped around the outside of the cable core 1, a protective layer 3 wrapped around the outside of the filling layer 2, an armor layer 5 and a protective layer 6 wrapped around the outside of the protective layer 3, the armor layer 5 is located on the inside of the protective layer 6, the protective layer 6 is located on the outermost layer of the power cable, a buffer layer 7 is arranged at equal intervals on the inside of the protective layer 3, the buffer layer 7 is in contact with the filling layer 2, a flame-retardant layer 4 is wrapped between the armor layer 5 and the protective layer 3, the flame-retardant layer 4 prevents the cable core 1 from being affected by external high temperature, protects the cable core 1 safety, and the setting of the flame-retardant layer 4 makes the power cable flame-retardant, which can prevent the inside of the power cable from being affected by high temperature and prevent the power cable from burning.

[0039] In this embodiment, two groups of flame retardant layers 4 are cross-wound around the outside of the protective layer 3 to strengthen the connection between the flame retardant layer 4 and the protective layer 3 and prevent the flame retardant layer 4 from being misaligned with the protective layer 3. The cross-wrap of the two groups of flame retardant layers 4 can further increase the flame retardancy of the power cable, while also preventing the flame retardant layer 4 from generating gaps during winding, thereby strengthening the adhesion of the flame retardant layer 4 covering the power cable.

[0040] See also Figure 2-Figure 10The present invention provides a technical solution: a production equipment for a highly flame-retardant power cable, which is used to produce a highly flame-retardant power cable, including a workbench 8 and a connecting sleeve 13. The connecting sleeve 13 passes through the workbench 8 to provide a stable transportation environment for the power cable wrapped with a cable core 1. The cable core 1 wrapped with a protective layer 3 passes through the connecting sleeve 13. A cable core stabilizing component is provided on the workbench 8. The cable core stabilizing component is in contact with the cable core 1 wrapped with the protective layer 3, thereby enhancing the stability of the flame retardant layer 4 when it is wrapped around the outside of the cable core 1, and preventing the cable core 1 from shaking when the flame retardant layer 4 is wrapped around the outside of the cable core 1.

[0041] The cable core stabilizing assembly includes a stabilizing wheel 15 , which contacts the protective layer 3 on the outer side of the cable core 1 , providing stable support for the cable core 1 wrapped with the protective layer 3 and preventing the cable core 1 from deflecting.

[0042] The stabilizing wheel 15 is provided with an offset sensor and a pressure sensor. The stabilizing wheel 15 can monitor the offset of the cable core in real time during the winding process of the flame retardant layer 4 according to the specifications, operating status and pressure of the cable core, and make timely adjustments through the feedback mechanism to ensure that the cable core 1 is always in the center position, thereby avoiding winding defects of the flame retardant layer 4 caused by the shaking of the cable core 1.

[0043] In this embodiment, an insertion column 11 and a rotating ring block 10 are movably installed in the workbench 8, and a motor 9 is fixedly installed. The insertion column 11 passes through the workbench 8 and is fixedly connected to a connecting box 14. A movable plate 34 is movably installed in the connecting box 14. One end of the movable plate 34 passes through the connecting box 14 and is fixedly connected to a stabilizing wheel 15. Multiple groups of stabilizing wheels 15 are distributed on the outside of the cable core 1 wrapped with a protective layer 3. A first rotating gear 12 is fixedly installed on the output shaft end of the motor 9. The first rotating gear 12 is meshed and connected with the rotating ring block 10. At the same time, a flame retardant layer 4 placement disk is fixedly installed on the rotating ring block 10, and the flame retardant layer 4 is placed in the prevention disk. When the motor 9 is working, it will drive the rotating ring block 10 to rotate through the first rotating gear 12, and at the same time drive the two groups of flame retardant layers 4 to wrap around each other on the outside of the cable core 1 wrapped with the protective layer 3, completing the winding work of the flame retardant layer 4.

[0044] In this embodiment, a gear column 32 and a lead screw 33 are movably installed in the connection box 14, and the lead screw 33 passes through the movable plate 34. A second rotating gear 35 is fixedly installed on the outside of the lead screw 33, and the gear column 32 is meshed with the second rotating gear 35. When the gear column 32 moves, the lead screw 33 is driven to rotate through the second rotating gear 35, so that the lead screw 33 can drive the movable plate 34 to move when rotating, and the movable plate 34 will drive the stabilizing wheel 15 to move. When the stabilizing wheel 15 contacts the outside of the cable core 1 wrapped with the protective layer 3, the winding position of the flame retardant layer 4 and the outside of the cable core 1 wrapped with the protective layer 3 will not shake, thereby preventing gaps in the flame retardant layer 4 during winding. At the same time, the stabilizing wheel 15 can also prevent the power cable from bending.

[0045] In this embodiment, a mounting cavity 19 and a contact groove 31 are provided in the workbench 8, and the push rod 29 enters the contact groove 31 from the mounting cavity 19. A partition 20 is fixedly installed in the mounting cavity 19, and a push column 24, a first rotating boss 25 and a second rotating boss 27 are movably installed. A piston plate 21 is movably installed at one end of the partition 20. The first rotating boss 25 and the second rotating boss 27 are connected by a transmission belt 26. When the first rotating boss 25 rotates, the second rotating boss 27 can be driven to rotate by the transmission belt 26. The first rotating boss 25 rotates and the second rotating boss 27 can be driven to rotate by the transmission belt 26. The rotating boss 25 contacts the piston plate 21, the pushing column 24 is located at one end of the partition 20, and the pushing column 24 is movably connected to the first rotating boss 25. When the pushing column 24 moves in the mounting cavity 19, it will drive the first rotating boss 25 to rotate, and when the first rotating boss 25 rotates, it will drive the piston plate 21 to move, and the gas in the mounting cavity 19 will enter the insertion column 11 through the vent 22, driving the piston column 23 to move, and then pushing the gear column 32. After being pushed, the gear column 32 will drive the screw 33 to rotate through the second rotating gear 35.

[0046] In this embodiment, a push rod 29 is movably installed through the partition 20, one end of the push rod 29 is in contact with the second rotating boss 27, and a first extrusion spring 28 is fixedly installed on one end of the push rod 29. The first extrusion spring 28 does not contact the second rotating boss 27. When the second rotating boss 27 drives the push rod 29 to move, the push rod 29 will be connected to the second plug-in column 18 through the partition 20, limiting the second plug-in column 18, and at the same time, when the push rod 29 moves, the first extrusion spring 28 will be stretched. When the push rod 29 loses the push of the second rotating boss 27, the first extrusion spring 28 will drive the push rod 29 back to its original position, and separate the push rod 29 from the second plug-in column 18, so that the insertion column 11 can slide in the workbench 8.

[0047] In this embodiment, a vent hole 22 is provided between the insertion column 11 and the installation cavity 19, and a piston column 23 is movably installed inside the insertion column 11. The end of the piston column 23 away from the vent hole 22 is fixedly connected to the tooth column 32, and a compression spring is provided on the outside of the piston column 23. When the piston column 23 is squeezed by the gas from the installation cavity 19, the piston column 23 will squeeze the compression spring. When the squeezing is lost, the piston column 23 moves toward the side of the vent hole 22 under the action of the compression spring, and will drive the tooth column 32 to move, so that the screw 33 will drive the stabilizing wheel 15 to separate from the cable core 1 wrapped with the protective layer 3, so that the stabilizing wheel 15 can provide stability for the next cable core 1 and facilitate the replacement of different cable cores 1.

[0048] In this embodiment, the insertion column 11 is connected to the limit box 16 by a snap buckle, and the second plug column 18 is fixedly installed on the outside of the limit box 16, and the first plug column 17 is fixedly installed in the limit box 16 through the sliding plate 38. The first plug column 17 and the second plug column 18 are both located on the outside of the limit box 16, and the first plug column 17 and the second plug column 18 are located on the same horizontal plane. A limiting groove 30 matching the push rod 29 is opened in the second plug column 18, and the limiting groove 30 is inclined. The first plug column 17 extends into the contact groove 31 and contacts the push rod 29. When the second plug column 18 is inserted into the installation cavity 19 When the second plug-in column 18 stops moving, the push rod 29 will completely enter the limiting groove 30 and restrict the second plug-in column 18 to prevent the insertion column 11 from moving, while ensuring the stability of the stabilizing wheel 15. It also ensures that the stabilizing wheel 15 will provide stability to the cable core 1 wrapped with the protective layer 3 while maintaining its own stability, preventing the flame retardant layer 4 from shaking and deviating at a large angle when the cable core 1 is wound, and ensuring that the flame retardant layer 4 can be completely wound around the outside of the cable core 1.

[0049] In this embodiment, a first connecting plate 36, a second connecting plate 37 and a sliding plate 38 are provided in the limit box 16. The sliding plate 38 contacts the first plug-in column 17. A return spring is fixedly installed on one end of the first connecting plate 36 away from the second connecting plate 37. At the same time, a return spring is also fixedly installed on the end of the sliding plate 38. A bevel is provided at one end of the first connecting plate 36, and a bevel is also provided on the sliding plate 38. The two bevels match and contact each other. When the first connecting plate 36 is not separated from the second connecting plate 37, the return spring on the sliding plate 38 is in a squeezed state. When the first connecting plate 36 is moved toward the second connecting plate 37, the return spring When the connecting plate 36 is pressed, the first connecting plate 36 is separated from the second connecting plate 37, and the contact area between the first connecting plate 36 and the sliding plate 38 through the oblique edge becomes larger, the pressure on the return spring on the sliding plate 38 is reduced, and the sliding plate 38 moves toward the inside of the limit box 16, and at the same time drives the first plug-in column 17 close to the limit box 16, so that the first plug-in column 17 will contact the push rod 29 in the contact groove 31, and push the push rod 29 out of the limit groove 30, so that the push rod 29 is separated from the second plug-in column 18, and at the same time, when the push rod 29 moves, it will drive the second rotating boss 27 to rotate.

[0050] By setting up a cable core stabilization component, including a stabilizing wheel and other structures, the stabilizing wheel is in contact with the cable core wrapped with a protective layer, providing stable support for the cable core, preventing the cable core from shifting, enhancing the stability of the flame retardant layer when it is wrapped around the outside of the cable core, preventing the cable core from shaking when the flame retardant layer is wrapped, and ensuring that the flame retardant layer is completely wrapped around the outside of the cable core.

[0051] Through the cooperation of the insertion column 11, the limit box 16, the first plug-in column 17, the second plug-in column 18, the push rod 29 and other structures, when the second plug-in column 18 is inserted into the installation cavity 19, the push rod 29 enters the limit groove 30 to restrict the second plug-in column 18, preventing the insertion column 11 from moving, ensuring the stability of the stabilizing wheel 15, and then ensuring the stability of the cable core 1, preventing the cable core 1 from shaking and deviating at a large angle when the flame retardant layer 4 is wound.

[0052] When the motor is working, the rotating ring block is driven to rotate through the first rotating gear. A flame retardant layer placement disk is fixedly installed on the rotating ring block, which can drive the two groups of flame retardant layers to wrap around the outside of the cable core wrapped with the protective layer, thereby realizing automatic winding of the flame retardant layer and improving production efficiency.

[0053] The cable core is stable during transmission, so that the flame retardant layer will not shake or deflect during the winding process, which strengthens the tight winding of the flame retardant layer, avoids winding gaps, and enhances the flame retardant effect of the power cable.

[0054] The working principle of this embodiment is as follows: when in use, the cable core 1 wrapped with the protective layer 3 is passed through the connecting sleeve 13, and the insertion column 11 is moved in the workbench 8 through the limit box 16. The second plug-in column 18 on the limit box 16 will enter the installation cavity 19, and when entering, it will drive the pushing column 24 to move in the installation cavity 19. When the pushing column 24 moves, it will drive the first rotating boss 25 to rotate in the installation cavity 19. When the first rotating boss 25 rotates, it will drive the piston plate 21 to move, and push the gas in the installation cavity 19 into the insertion column 11 through the vent 22, and drive the piston column 23 to move in the insertion column 11. At the same time, when the piston column 23 moves, it will drive the gear column 32 to move. When the gear column 32 moves, it will drive the screw 33 to rotate through the second rotating gear 35. When the screw 33 rotates, it will drive the stabilizing wheel 15 to approach the cable core 1 wrapped with the protective layer 3 through the moving plate 34, and provide support for the cable core 1 wrapped with the protective layer 3, and provide support for the cable core 1 wrapped with the protective layer 3. The cable core 1 provides stability. While the first rotating boss 25 rotates, it will also drive the second rotating boss 27 to rotate through the transmission belt 26. When the second rotating boss 27 rotates, it will contact the push rod 29 and drive the push rod 29 to extend out of the partition 20. As the second plug-in column 18 continues to enter the installation cavity 19, the push rod 29 will contact the inclined limit groove 30 until the second plug-in column 18 is completely inserted into the installation cavity 19. The push rod 29 will also completely enter the limit groove 30 and enter the contact groove 31, completing the restriction of the second plug-in column 18. This can make the insertion column 11 unable to move in the workbench 8, and also make the stabilizing wheel 15 unable to move, so that the stabilizing wheel 15 forms a support for the cable core 1 wrapped with the protective layer 3, ensuring that when the flame retardant layer 4 is wrapped around the cable core 1 wrapped with the protective layer 3, its winding part will not shake, strengthening the flame retardant layer 4 wrapped around the cable core 1 wrapped with the protective layer 3.

[0055] When the cable core 1 needs to be replaced, the first connecting plate 36 is squeezed into the limit box 16. Through the action of the return spring, the sliding plate 38 will drive the first plug-in column 17 to move closer to the side of the limit box 16. At the same time, the first plug-in column 17 contacts the push rod 29 in the contact groove 31. As the first plug-in column 17 continues to move, the push rod 29 will disengage from the second plug-in column 18 and move into the installation cavity 19. That is, the second rotating boss 27 is reversed, the piston plate 21 will also return to its original position, and the piston column 23 will also drive the tooth column 32 to rotate the screw 33 in the opposite direction, so that the stabilizing wheel 15 is separated from the cable core 1 wrapped with the protective layer 3.

[0056] The motor 9 drives the first rotating gear 12 to rotate, and when the first rotating gear 12 rotates, it drives the rotating ring block 10 to rotate. When the rotating ring block 10 rotates, it drives the flame retardant layer 4 to wind the cable core 1 wrapped with the protective layer 3.

[0057] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A highly flame-retardant power cable, comprising a cable core, characterized in that: A filling layer is provided on the outside of the cable core, a protective layer is provided on the outside of the filling layer, an armor layer and a protective layer are provided on the outside of the protective layer, a buffer layer is provided on the inside of the protective layer at equal intervals, and a flame retardant layer is provided between the armor layer and the protective layer. The flame retardant layer prevents the cable core from being affected by external high temperature and protects the safety of the cable core.

2. A highly flame-retardant power cable according to claim 1, characterized in that: The two groups of flame retardant layers are cross-wound around the outside of the protective layer to strengthen the connection between the flame retardant layer and the protective layer and prevent the flame retardant layer from being misaligned with the protective layer.

3. A production equipment for a highly flame-retardant power cable, used for producing a highly flame-retardant power cable according to claims 1-2, characterized in that: It includes a workbench and a connecting sleeve. The cable core wrapped with a protective layer passes through the connecting sleeve. A cable core stabilizing assembly is provided on the workbench. The cable core stabilizing assembly is in contact with the cable core wrapped with the protective layer, thereby enhancing the stability of the flame retardant layer when it is wrapped around the outside of the cable core and preventing the cable core from shaking when the flame retardant layer is wrapped around the outside of the cable core. The cable core stabilizing assembly includes a stabilizing wheel, which is in contact with the protective layer on the outside of the cable core to provide stable support for the cable core wrapped with the protective layer and prevent the cable core from shifting.

4. The production equipment for a highly flame-retardant power cable according to claim 3, characterized in that: The workbench is also provided with an insertion column, a motor and a rotating ring block. The insertion column passes through the workbench and is provided with a connecting box. A moving plate is provided in the connecting box. The moving plate is in contact with the stabilizing wheel. The motor is provided with a first rotating gear and is in contact with the rotating ring block through the first rotating gear.

5. The production equipment for a highly flame-retardant power cable according to claim 4, characterized in that: The connection box is provided with a gear column and a lead screw, the lead screw passes through the movable plate, a second rotating gear is provided on the outside of the lead screw, and the gear column is meshed and connected with the second rotating gear.

6. The production equipment for a highly flame-retardant power cable according to claim 5, characterized in that: The workbench is provided with an installation cavity and a contact groove, and the installation cavity is provided with a partition, a push column, a first rotating boss and a second rotating boss. A piston plate is provided at one end of the partition, a transmission belt is provided between the first rotating boss and the second rotating boss, and the first rotating boss is in contact with the piston plate.

7. The production equipment for a highly flame-retardant power cable according to claim 6, characterized in that: A push rod is provided through the partition, one end of the push rod is in contact with the second rotating boss, and a first extrusion spring is provided at one end of the push rod.

8. The production equipment for a highly flame-retardant power cable according to claim 7, characterized in that: A vent hole is provided in the insertion column, a piston column is provided in the insertion column, and the other end of the piston column is in contact with the gear column.

9. The production equipment for a highly flame-retardant power cable according to claim 7, characterized in that: A limit box is provided on the insertion column, and a first plug-in column and a second plug-in column are provided on the limit box. A limit groove matching the push rod is opened in the second plug-in column, and the limit groove is inclined. The first plug-in column extends into the contact groove and contacts the push rod.

10. The production equipment for a highly flame-retardant power cable according to claim 9, characterized in that: The limit box is provided with a first connecting plate, a second connecting plate and a sliding plate, and the sliding plate is in contact with the first plug-in column.

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