Spiral cable

Abstract

This invention discloses a spiral cable, belonging to the field of cable technology. The spiral cable includes multiple cable conductor assemblies, with a buffer filling layer disposed between the outer surfaces of the conductor assemblies. Multiple grooves are provided on the outer surface of the buffer filling layer. An inner sheath assembly is disposed outside the buffer filling layer. End sealing assemblies are provided at both ends of the buffer filling layer between the outer walls of the cable conductor assemblies. A steel strip reinforcing assembly is disposed outside the inner sheath assembly. Port connection sealing mechanisms are provided between corresponding ports of the inner sheath assembly and the steel strip reinforcing assembly. An integral outer sheath is fixedly connected to the outer wall of the steel strip reinforcing assembly. This invention fills the space between the inner sheath assembly, the buffer filling layer, and the steel strip reinforcing assembly with insulating solid lubricating oil. During operation, the spiral cable experiences significant reduction in internal friction under tension, thus extending its service life.

Description

Technical Field

[0001] This invention belongs to the field of cable technology, specifically relating to spiral cables. Background Technology

[0002] Spiral cables (also known as spring cables or coiled cables) are special cables made by twisting multiple insulated cores into a spiral spring shape, shaping them, and then wrapping them with a sheath. Their core advantage lies in their excellent elasticity and resilience, allowing them to stretch and contract freely within a certain length range while maintaining continuous circuit conduction. Common structures include a conductor, insulation layer, filler, shielding layer, and elastic outer sheath. Materials typically include bend-resistant copper alloy conductors and flexible TPU, PVC, or silicone rubber sheaths. Spiral cables are widely used in industrial robots, medical equipment, charging piles, airport bridges, handheld instruments, and other scenarios requiring dynamic cable deployment and retraction. They effectively prevent cable tangling, wear, and mess, significantly improving equipment mobility and lifespan. Their spiral pitch, number of turns, and outer diameter can be customized according to stretching stroke, bending frequency, and current carrying capacity requirements, making them a key flexible connection element for mobile power supply and signal transmission.

[0003] During the stretching process of a spiral cable, the layers (conductor, insulation, shield, and sheath) experience relative slippage due to changes in curvature radius and axial displacement. Static friction between layers transforms into dynamic friction, and the coefficient of friction increases with stretching speed, contact pressure, and surface roughness. This continuous friction can lead to insulation wear and thinning, shield breakage, fraying of the sheath's inner wall, and even scratches on the conductor surface, causing partial discharge or unstable contact resistance. Simultaneously, the accumulation of frictional heat accelerates material aging, resulting in delayed rebound or even permanent deformation. Friction debris can contaminate internal gaps, reducing insulation performance. Furthermore, the difference in thermal expansion coefficients between different materials exacerbates shear stress during stretching, leading to interlayer peeling or bulging, ultimately shortening the cable's fatigue life. This significantly increases maintenance costs, especially in high-frequency, long-stroke applications. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a spiral cable.

[0005] The technical solution adopted to solve the above technical problems is: to provide a spiral cable, including multiple cable conductor assemblies, a buffer filling layer is provided between the outer surfaces of the multiple cable conductor assemblies, and multiple grooves are provided outside the buffer filling layer. An inner sheath assembly is provided outside the buffer filling layer, and end sealing assemblies are provided at both ends of the buffer filling layer between the outer walls of the cable conductor assemblies.

[0006] The inner sheath assembly is provided with a steel strip reinforcement assembly on its exterior. A port connection sealing mechanism is provided between the corresponding ports of the inner sheath assembly and the steel strip reinforcement assembly. An integral outer sheath is fixedly connected to the outer wall of the steel strip reinforcement assembly. The inner sheath assembly is filled with insulating solid lubricating oil between itself and the buffer filling layer and the steel strip reinforcement assembly.

[0007] Furthermore, the cable conductor assembly includes a metal conductor wire group, the outer wall of which is provided with a conductor shielding insulation layer, and a port connector is provided between the corresponding ports of the metal conductor wire group and the conductor shielding insulation layer.

[0008] Through the above technical solution, in the production process, multiple copper wires or tinned copper wires are first bundled together to form a flexible and highly conductive cable core wire to form a metal conductor wire group. Molten insulating material is then evenly wrapped around the core wire using an extruder to form a conductor shielding insulation layer. Finally, port connectors are fitted onto both ends of the metal conductor wire group to achieve power transmission.

[0009] Furthermore, the inner sheath assembly includes an inner sheath body, with multi-hole connectors fixedly connected to both ends of the inner sheath body, an integral connecting sleeve fixedly connected to the other side of each of the two multi-hole connectors, and multiple slender threaded rods fixedly connected to the other side of each of the two integral connecting sleeves.

[0010] Through the above technical solution, in the process of manufacturing the inner sheath assembly, the multi-hole connector and the integrated connector sleeve are integrated structures. The other end of the multi-hole connector is embedded inside the inner sheath body to form a whole. The fixed connection of the port connection sealing mechanism can be achieved through multiple slender threaded rods on the other side.

[0011] Furthermore, the end sealing assembly includes a porous sealing plate sleeved between the outer walls of multiple cable conductor assemblies. The outer wall of the porous sealing plate is fitted with two outer ring sealing rings. The porous sealing plate has multiple circular through holes corresponding to the cable conductor assemblies, and the inner walls of the multiple circular through holes are each embedded with two inner ring sealing rings.

[0012] With the above technical solution, the upper end sealing component is sleeved on the cable conductor assembly on both sides of the buffer filling layer. After installation, the two outer ring sealing rings can achieve the seal between the multi-hole sealing plate and the inner sheath assembly, and the two inner ring sealing rings can achieve the seal between the circular through hole and the outer wall of the multiple cable conductor assembly, thereby preventing the leakage of insulating solid lubricating oil.

[0013] Furthermore, the outer wall of the porous sealing plate is fitted to the inner wall of the inner sheath assembly, the inner wall of the circular through hole is fitted to the outer wall of the cable conductor assembly, and the outer wall of the porous sealing plate and the inner wall of the circular through hole are respectively provided with positioning grooves corresponding to the outer ring sealing ring and the inner ring sealing ring.

[0014] The above technical solution uses the positioning groove to position the outer ring seal and the inner ring seal, preventing them from disengaging during sliding installation.

[0015] Furthermore, the steel strip reinforcing assembly includes a steel strip armored reinforcing layer, with a first connecting sleeve fixedly connected to both ends of the steel strip armored reinforcing layer, and an integrated clamping sleeve fixedly connected to the other side of each of the two first connecting sleeves, with a flat sealing ring engaged on the inner wall of each of the two integrated clamping sleeves.

[0016] With the above technical solution, during production, the outer layer of the steel strip reinforcing component is covered with an integrated outer sheath by an extruder, and then connected by a port connection sealing mechanism. The steel strip armored reinforcing layer is then extruded into the inner sheath component, and sealed by a flat sealing ring.

[0017] Furthermore, the port connection sealing mechanism includes an externally threaded connecting sleeve installed at one end of the inner sheath assembly. The inner wall of the externally threaded connecting sleeve is provided with multiple connecting nuts. The two ends of the outer wall of the externally threaded connecting sleeve are respectively screwed with a first internally threaded sleeve and a second internally threaded sleeve. Multiple integral studs are fixedly connected to the other side of each of the two second internally threaded sleeves. Locking nuts are screwed to the outer walls of the multiple integral studs. A perforated circular block is provided between the multiple integral studs. An integral sealing component is fixedly connected to the inner wall of the perforated circular block.

[0018] Through the above technical solution, during the assembly process, an external threaded connecting sleeve is used to fit between multiple slender threaded rods, and then the corresponding connecting nut is screwed on to achieve a fixed connection between the external threaded connecting sleeve and the integrated connecting sleeve. Then, the first internal threaded sleeve and the second internal threaded sleeve are screwed on respectively to achieve a fixed connection between the external threaded connecting sleeve and the first internal threaded sleeve and the second internal threaded sleeve. Finally, multi-hole round blocks are fitted onto multiple integrated studs and the corresponding locking nuts are screwed on. At the same time, during the installation process, the integrated sealing component is continuously inserted until it is completely fixed. After that, one end of the integrated sealing component is tightly attached to one side of the end sealing component to achieve a seal.

[0019] Furthermore, one side of the inner wall of the external threaded connecting sleeve is provided with multiple grooves corresponding to the connecting nut, the multi-hole block is provided with multiple circular holes corresponding to the integrated stud, and the integrated sealing component is provided with multiple circular elongated holes corresponding to the cable conductor assembly.

[0020] Through the above technical solution, the groove provides installation space for the connecting nut, preventing the connecting nut from protruding and affecting the installation of other components. At the same time, the circular hole is used to fit multiple integrated studs, and the circular elongated hole is used to fit cable conductor assemblies, so that multiple cable conductor assemblies can still extend to achieve power transmission while ensuring a seal.

[0021] Furthermore, the external threaded connecting sleeve is used to connect the second internal threaded sleeve and the inner sheath assembly, and the first internal threaded sleeve is used to connect the steel strip reinforcing assembly and the external threaded connecting sleeve.

[0022] The above technical solution ensures that the inner sheath assembly and the steel strip reinforcement assembly can be fixedly connected through the external threaded connecting sleeve, while also achieving a seal.

[0023] The beneficial effects of the present invention are as follows: (1) The present invention fills the space between the inner sheath assembly and the buffer filling layer and the steel strip reinforcing assembly with insulating solid lubricating oil. During the working process, the spiral cable is stretched by force. The space between the buffer filling layer, the inner sheath assembly and the steel strip reinforcing assembly is filled with insulating solid lubricating oil. During the stretching deformation process, relative friction occurs. However, due to the presence of insulating solid lubricating oil, the friction force is greatly reduced, the friction loss between the buffer filling layer, the inner sheath assembly and the steel strip reinforcing assembly is reduced, and the service life of the spiral cable is improved. At the same time, the insulating solid lubricating oil can further improve the insulation performance and improve safety. (2) The present invention designs a port connection sealing mechanism and an end sealing assembly. Through the port connection sealing mechanism, while completing the locking and fixing between the buffer filling layer, the inner sheath assembly and the steel strip reinforcing assembly, it can also achieve multi-angle sealing to avoid the lubricating oil overflow. At the same time, the designed multi-hole connector also allows the lubricating oil between the two spaces of the outer wall and the inner wall of the inner sheath body to achieve a certain degree of circulation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the present invention;

[0026] Figure 3 This is the present invention. Figure 2 A schematic diagram of the transverse cross-sectional structure;

[0027] Figure 4 This is a schematic diagram of the connection structure of the cable conductor assembly and the port connection sealing mechanism of the present invention;

[0028] Figure 5 This is the present invention. Figure 4 A partial longitudinal cross-sectional schematic diagram of the structure;

[0029] Figure 6 This is the present invention. Figure 4 A schematic diagram of the exploded structure;

[0030] Figure 7 This is the present invention. Figure 6 A schematic diagram of the cross-sectional structure;

[0031] Figure 8 yes Figure 7 A magnified view of a section at point A in the middle;

[0032] Figure 9 This is the present invention. Figure 6 A schematic diagram of the three-dimensional cross-sectional structure;

[0033] Figure 10 This is an exploded structural diagram of the cable conductor assembly, inner sheath assembly, end sealing assembly, and steel strip reinforcement assembly of the present invention;

[0034] Figure 11 This is a schematic diagram of the end sealing assembly structure of the present invention.

[0035] Reference numerals: 1. Cable conductor assembly; 101. Metal conductor wire group; 102. Conductor shielding insulation layer; 103. Port connector; 2. Buffer filling layer; 3. Inner sheath assembly; 301. Inner sheath body; 302. Multi-hole connector; 303. Integrated connector sleeve; 304. Slender threaded rod; 4. End sealing assembly; 401. Multi-hole sealing plate; 402. Outer ring sealing ring; 403. Inner ring sealing ring; 5. Steel strip reinforcement assembly; 5 01. Steel strip armored reinforcement layer; 502. First connecting sleeve; 503. Integrated ferrule; 504. Flat sealing ring; 6. Port connection sealing mechanism; 601. External thread connecting sleeve; 602. Connecting nut; 603. First internal thread sleeve; 604. Second internal thread sleeve; 605. Integrated stud; 606. Locking nut; 607. Multi-hole round block; 608. Integrated sealing component; 7. Integrated outer sheath; 8. Insulating solid lubricant. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] like Figures 1-3 and Figure 10As shown, the spiral cable of this embodiment includes multiple cable conductor assemblies 1. Each cable conductor assembly 1 includes a metal conductor wire group 101. The outer wall of the metal conductor wire group 101 is provided with a conductor shielding insulation layer 102. Port connectors 103 are provided between the corresponding ports of the metal conductor wire group 101 and the conductor shielding insulation layer 102. In the production process, multiple copper wires or tinned copper wires are first bundled together to form a flexible and highly conductive cable core wire to form the metal conductor wire group 101. Molten insulating material is uniformly wrapped around the outer periphery of the core wire through an extruder to form the conductor shielding insulation layer 102. Finally, port connectors 103 are sleeved on both ends of the metal conductor wire group 101 to realize power transmission. A buffer filling layer 2 is provided between the outer surfaces of the multiple cable conductor assemblies 1, and multiple grooves are provided on the outer surface of the buffer filling layer 2.

[0038] like Figures 1-4 and Figure 10 The buffer filling layer 2 shown is provided with an inner sheath assembly 3. The inner sheath assembly 3 includes an inner sheath body 301. Both ends of the inner sheath body 301 are fixedly connected to perforated connectors 302. The other side of each of the two perforated connectors 302 is fixedly connected to an integral connecting sleeve 303. The other side of each of the two integral connecting sleeves 303 is fixedly connected to multiple slender threaded rods 304. During the manufacturing process of the inner sheath assembly 3, the perforated connectors 302 and the integral connecting sleeves 303 are integral structures. The other end of the perforated connectors 302 is embedded inside the inner sheath body 301 to form a whole. The fixed connection of the port connection sealing mechanism 6 can be achieved through the multiple slender threaded rods 304 on the other side.

[0039] like Figures 1-11As shown, end sealing components 4 are provided at both ends of the buffer filling layer 2 between the outer walls of the cable conductor assembly 1. The end sealing component 4 includes a perforated sealing plate 401 sleeved between the outer walls of multiple cable conductor assemblies 1. Two outer ring sealing rings 402 are sleeved on the outer wall of the perforated sealing plate 401. Multiple circular through holes corresponding to the cable conductor assembly 1 are opened on the perforated sealing plate 401. Two inner ring sealing rings 403 are embedded in the inner walls of the multiple circular through holes. The end sealing components 4 are sleeved on the cable conductor assemblies 1 on both sides of the buffer filling layer 2. After installation, the two outer ring sealing rings 402 can realize the connection between the perforated sealing plate 401 and the inner sheath assembly. The seal between the two inner ring seals 403 is achieved by sealing the circular through hole and the outer wall of the multiple cable conductor assembly 1, thereby preventing the leakage of insulating solid lubricating oil 8. The outer wall of the porous sealing plate 401 is attached to the inner wall of the inner sheath assembly 3, and the inner wall of the circular through hole is attached to the outer wall of the cable conductor assembly 1. The outer wall of the porous sealing plate 401 and the inner wall of the circular through hole are respectively provided with positioning grooves corresponding to the outer ring seal 402 and the inner ring seal 403. The positioning grooves are used to position the outer ring seal 402 and the inner ring seal 403, preventing the outer ring seal 402 and the inner ring seal 403 from disengaging during sliding installation.

[0040] like Figures 1-10 As shown, the inner sheath assembly 3 is provided with a steel strip reinforcing assembly 5 on its exterior. The steel strip reinforcing assembly 5 includes a steel strip armored reinforcing layer 501. Both ends of the steel strip armored reinforcing layer 501 are fixedly connected to a first connecting sleeve 502. The other side of each of the two first connecting sleeves 502 is fixedly connected to an integrated clamping sleeve 503. The inner walls of the two integrated clamping sleeves 503 are fitted with flat sealing rings 504. During production, the outer layer of the steel strip reinforcing assembly 5 is covered with an integrated outer sheath 7 by an extruder. After connection through the port connection sealing mechanism 6, the steel strip armored reinforcing layer 501 squeezes the inner sheath assembly 3 and achieves sealing through the flat sealing rings 504.

[0041] like Figures 1-11As shown, a port connection sealing mechanism 6 is provided between the corresponding ports of the inner sheath assembly 3 and the steel strip reinforcing assembly 5. An integral outer sheath 7 is fixedly connected to the outer wall of the steel strip reinforcing assembly 5. Insulating solid lubricating oil 8 is filled between the inner sheath assembly 3 and the buffer filling layer 2 and the steel strip reinforcing assembly 5 respectively. The port connection sealing mechanism 6 includes an external threaded connecting sleeve 601 installed at one end of the inner sheath assembly 3. Multiple connecting nuts 602 are provided on the inner wall of the external threaded connecting sleeve 601. The two ends of the outer wall of the external threaded connecting sleeve 601 are respectively screwed with a first internal threaded sleeve 603 and a second internal threaded sleeve 604. The other side of the two second internal threaded sleeves 604 are fixedly connected. The assembly includes multiple integrated studs 605, each with a locking nut 606 screwed onto its outer wall. A perforated block 607 is positioned between the studs 605, and an integrated sealing element 608 is fixedly connected to the inner wall of each block 607. During assembly, an external threaded sleeve 601 is fitted between multiple slender threaded rods 304, and then the corresponding connecting nut 602 is tightened to secure the external threaded sleeve 601 and the integrated connecting sleeve 303. Finally, a first internal threaded sleeve 603 and a second internal threaded sleeve 604 are tightened to respectively connect the external threaded sleeve 601 and the first internal threaded sleeve 603. The fixed connection between the second internal threaded sleeve 604 and the multi-hole round block 607 is finally fitted onto the multiple integrated studs 605 and the corresponding locking nut 606 is screwed on. At the same time, during the installation process, the integrated sealing component 608 is continuously pushed in until it is completely fixed. One end of the integrated sealing component 608 is tightly attached to one side of the end sealing component 4 to achieve a seal. The inner wall of the external threaded connecting sleeve 601 has multiple grooves corresponding to the connecting nut 602. The multi-hole round block 607 is provided with multiple circular holes corresponding to the integrated studs 605. The integrated sealing component 608 has multiple circular elongated holes corresponding to the cable conductor component 1. The connecting nut 602 provides installation space, preventing it from protruding and affecting the installation of other components. The circular hole is used to fit multiple integrated studs 605, and the elongated circular hole is used to fit the cable conductor assembly 1. This ensures that multiple cable conductor assemblies 1 can still extend to transmit power while maintaining a seal. The external threaded connecting sleeve 601 is used to connect the second internal threaded sleeve 604 and the inner sheath assembly 3. The first internal threaded sleeve 603 is used to connect the steel strip reinforcing assembly 5 and the external threaded connecting sleeve 601. This ensures that the internal sheath assembly 3 and the steel strip reinforcing assembly 5 can be fixedly connected through the external threaded connecting sleeve 601, while also achieving a seal.

[0042] The working principle of this embodiment is as follows: In the production process, multiple copper wires or tinned copper wires are first bundled together to form a flexible and highly conductive cable core wire to form a metal conductor wire group 101. Molten insulating material is uniformly wrapped around the core wire through an extruder to form a conductor shielding insulation layer 102. Then, a buffer filling layer 2 is extruded between the outer walls of the three cable conductor assemblies 1. Due to the shape of the extrusion opening, the buffer filling layer 2 has multiple grooves on its outside. Finally, the upper end sealing assembly 4 is sleeved on the cable conductor assemblies 1 on both sides of the buffer filling layer 2. At the same time, an integrated outer sheath 7 is wrapped around the outer layer of the steel strip reinforcing assembly 5 through an extruder. In the production process of fixing the steel strip armor reinforcing layer 501 and the first connecting sleeve 502, the first internal thread sleeve 603 needs to be sleeved on the first connecting sleeve 502 first.

[0043] During assembly, the entire assembly formed by multiple cable conductor assemblies 1 and buffer filling layers 2 is inserted into the inner wall of the inner sheath assembly 3. As the buffer filling layer 2 is inserted deeper, insulating solid lubricant 8 is continuously squeezed out into the grooves of the buffer filling layer 2 until it is fully inserted. Then, the entire assembly formed by multiple cable conductor assemblies 1, buffer filling layers 2, and inner sheath assembly 3 is inserted into the inner wall of the steel strip reinforcing assembly 5. Insulating solid lubricant 8 is continuously added to the outer wall of the inner sheath assembly 3 until it is fully inserted. Finally, an external threaded connecting sleeve 601 is fitted between multiple slender threaded rods 304, and then the corresponding connector is screwed on. Nut 602 secures the connection between the external threaded connecting sleeve 601 and the integrated connecting sleeve 303. Then, the first internal threaded sleeve 603 and the second internal threaded sleeve 604 are screwed on to secure the connection between the external threaded connecting sleeve 601 and the first internal threaded sleeve 603 and the second internal threaded sleeve 604. Finally, multi-hole round blocks 607 are fitted onto multiple integrated studs 605 and the corresponding locking nuts 606 are screwed on. During the installation process, the integrated sealing component 608 is continuously inserted until it is completely fixed. One end of the integrated sealing component 608 is tightly attached to one side of the end sealing component 4 to achieve a seal.

[0044] Finally, the prepared base cable is tightly wound on a winding rod or winding equipment according to the predetermined number of turns and length, and the two ends are fixed with clamps to form a spiral shape. The wound cable and the winding rod are placed in an oven and heated at a constant temperature at a specific temperature to soften the insulation material and permanently shape it into a spiral structure. The heat-shaped spiral cable is then quickly cooled with cooling water to solidify and shape it. Finally, the winding rod is removed for subsequent finishing and testing.

[0045] During operation, the spiral cable is stretched. The buffer filling layer 2, inner sheath assembly 3 and steel strip reinforcing assembly 5 are all filled with insulating solid lubricating oil 8. Relative friction occurs during the stretching deformation. However, due to the presence of insulating solid lubricating oil 8, the friction force is greatly reduced, and the friction loss between the buffer filling layer 2, inner sheath assembly 3 and steel strip reinforcing assembly 5 is reduced.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A spiral cable, comprising a plurality of cable conductor assemblies (1), characterized in that: A buffer filling layer (2) is provided between the outer sides of the multiple cable conductor assemblies (1), and multiple grooves are provided on the outside of the buffer filling layer (2). An inner sheath assembly (3) is provided on the outside of the buffer filling layer (2), and an end sealing assembly (4) is provided at both ends of the buffer filling layer (2) between the outer walls of the cable conductor assembly (1). The inner sheath assembly (3) is provided with a steel strip reinforcing assembly (5) on its outside. A port connection sealing mechanism (6) is provided between the corresponding ports of the inner sheath assembly (3) and the steel strip reinforcing assembly (5). An integrated outer sheath (7) is fixedly connected to the outer wall of the steel strip reinforcing assembly (5). The inner sheath assembly (3) is filled with insulating solid lubricating oil (8) between itself and the buffer filling layer (2) and the steel strip reinforcing assembly (5).

2. The spiral cable according to claim 1, characterized in that, The cable conductor assembly (1) includes a metal conductor wire group (101), and a conductor shielding insulation layer (102) is provided on the outer wall of the metal conductor wire group (101). A port connector (103) is provided between the corresponding ports of the metal conductor wire group (101) and the conductor shielding insulation layer (102).

3. The spiral cable according to claim 1, characterized in that, The inner sheath assembly (3) includes an inner sheath body (301), both ends of which are fixedly connected to a multi-hole connector (302), and the other side of each of the two multi-hole connectors (302) is fixedly connected to an integral connector sleeve (303), and the other side of each of the two integral connector sleeves (303) is fixedly connected to multiple slender threaded rods (304).

4. The spiral cable according to claim 1, characterized in that, The end sealing assembly (4) includes a porous sealing plate (401) sleeved between the outer walls of multiple cable conductor assemblies (1). The outer wall of the porous sealing plate (401) is fitted with two outer ring sealing rings (402). The porous sealing plate (401) has multiple circular through holes corresponding to the cable conductor assemblies (1). The inner walls of the multiple circular through holes are each embedded with two inner ring sealing rings (403).

5. The spiral cable according to claim 4, characterized in that, The outer wall of the porous sealing plate (401) is attached to the inner wall of the inner sheath assembly (3), and the inner wall of the circular through hole is attached to the outer wall of the cable conductor assembly (1). The outer wall of the porous sealing plate (401) and the inner wall of the circular through hole are respectively provided with positioning grooves corresponding to the outer ring sealing ring (402) and the inner ring sealing ring (403).

6. The spiral cable according to claim 1, characterized in that, The steel strip reinforcing assembly (5) includes a steel strip armored reinforcing layer (501). Both ends of the steel strip armored reinforcing layer (501) are fixedly connected to a first connecting sleeve (502). The other side of each of the two first connecting sleeves (502) is fixedly connected to an integrated sleeve (503). The inner walls of the two integrated sleeves (503) are fitted with flat sealing rings (504).

7. The spiral cable according to claim 1, characterized in that, The port connection sealing mechanism (6) includes an external threaded connecting sleeve (601) installed at one end of the inner sheath assembly (3). The inner wall of the external threaded connecting sleeve (601) is provided with a plurality of connecting nuts (602). The two ends of the outer wall of the external threaded connecting sleeve (601) are respectively screwed with a first internal threaded sleeve (603) and a second internal threaded sleeve (604). The other side of the two second internal threaded sleeves (604) is fixedly connected with a plurality of integral studs (605). The outer wall of the plurality of integral studs (605) is screwed with a locking nut (606). A multi-hole round block (607) is provided between the plurality of integral studs (605). The inner wall of the multi-hole round block (607) is fixedly connected with an integral sealing member (608).

8. The spiral cable according to claim 7, characterized in that, The inner wall of the external threaded connecting sleeve (601) has multiple grooves corresponding to the connecting nut (602) on one side. The multi-hole block (607) has multiple circular holes corresponding to the integrated stud (605). The integrated sealing member (608) has multiple circular elongated holes corresponding to the cable conductor assembly (1) through it.

9. The spiral cable according to claim 7, characterized in that, The external threaded connecting sleeve (601) is used to connect the second internal threaded sleeve (604) and the inner sheath assembly (3), and the first internal threaded sleeve (603) is used to connect the steel strip reinforcing assembly (5) and the external threaded connecting sleeve (601).

Images