Cold contraction pipe supporting structure and cold contraction pipe protection device

Abstract

The invention relates to the technical field of cable accessories, and discloses a cold shrink tube supporting structure and a cold shrink tube protection device.The cold shrink tube supporting structure comprises a supporting tube, the supporting tube is used for supporting a cold shrink tube body so that the cold shrink tube body can be in a pre-expansion state, and the supporting tube comprises supporting strips wound in a spiral shape and connecting bridges connecting adjacent spiral turns; the supporting strip comprises an anti-scraping belt and a structural belt which are integrally formed, the anti-scraping belt is located on the radial outer side of the structural belt, and in the using process, the drawing belt is pulled to enable the connecting bridges to be broken in sequence so that the supporting pipe can be disassembled. A hard structure of the internal structure belt is effectively isolated through the external anti-scraping belt, and the inner wall of the cold shrink pipe is prevented from being scratched while the radial supporting strength is guaranteed; and meanwhile, the supporting pipe is stably, continuously and controllably disintegrated spirally according to a preset track by using the connecting bridge, so that the cable skin is prevented from being accidentally damaged, and the construction risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of cable accessories technology, and in particular to a cold shrink tubing support structure and a cold shrink tubing protection device. Background Technology

[0002] In the installation of power cable accessories, cold shrink tubing is widely used due to its heat-free operation, ease of installation, and excellent resilience. It is primarily used to provide reliable insulation and waterproof sealing. To maintain the pre-expanded state of the cold shrink tubing during transportation, storage, and pre-installation preparation, a support tube is typically installed inside the tubing.

[0003] Existing support tubes are typically made of rigid engineering plastics such as polyvinyl chloride (PVC) and acrylonitrile-butadiene-styrene copolymer (ABS), aiming to provide sufficient radial stiffness to resist the shrinkage force of cold shrink tubing. However, traditional single-layer rigid support structures have the following problems: The support tube is made entirely of rigid material with high surface hardness. When installers pull the support tube out of the cold shrink tubing using a pull rope, the disassembled local structures, such as fracture surfaces, are prone to rigid friction with the pre-coated sealant layer on the inner wall of the cold shrink tubing, easily damaging the integrity of the sealant layer and affecting the long-term sealing effect of the cable accessories. Traditional support tube structures often rely on pre-set continuous linear grooves to achieve spiral tearing. During the pulling process, the tearing force is often unevenly distributed. If the pulling speed is too fast or the angle is off, the support strip may not tear along the pre-set trajectory, easily scratching the cable sheath at the sealing location or even causing accidental breakage, leading to construction interruption. This necessitates cleaning up the remaining support tube, reducing work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a cold shrink tubing support structure and a cold shrink tubing protection device. This structure allows a scratch-resistant strip located radially outside the structural band to contact the inner wall of the cold shrink tubing body. This effectively isolates the rigid structure while providing necessary radial support strength, preventing scratches on the inner wall of the cold shrink tubing during support or removal. Simultaneously, a connecting bridge connects adjacent spiral turns, allowing the support tube to break sequentially along a preset trajectory when subjected to pulling force. This achieves a smooth, continuous, and controllable spiral disintegration of the support tube, avoiding unnecessary scratches on the cable sheath.

[0005] To achieve the above objectives, a first aspect of the present invention provides a cold shrink tubing support structure, including a support tube for supporting the cold shrink tubing body to be in a pre-expanded state. The support tube includes a support strip and a plurality of connecting bridges. The support strip is spirally wound to form a tubular structure, and one end of the support strip is provided with a pull-out strap. The support strip includes a scratch-resistant strip and a structural strip, wherein the scratch-resistant strip and the structural strip are integrally formed, and the scratch-resistant strip is located on the radially outer side of the structural strip; Multiple connecting bridges are connected between adjacent spiral turns of the support strip to maintain the shape of the support tube, and the multiple connecting bridges can break sequentially when the pull belt is subjected to a pulling force to achieve the gradual disintegration of the support tube.

[0006] Furthermore, the anti-scratch strip has a first slot that opens axially toward the support tube along its extension direction, and a first locking block that protrudes axially along the support tube; the structural strip has a second slot that matches the first locking block along its extension direction, and a second locking block that matches the first slot; the first locking block is engaged in the second slot, and the second locking block is engaged in the first slot.

[0007] Furthermore, the scratch-resistant strip is made of thermoplastic polyurethane elastomer, and the structural strip is made of polyethylene terephthalate-1,4-cyclohexanediol ester; the hardness of the scratch-resistant strip is lower than the hardness of the structural strip.

[0008] Furthermore, multiple connecting bridges are spaced apart along the extension direction of the support bar, the connecting bridges are integrally formed with the support bar, and the two ends of the connecting bridges are respectively connected between the structural strips of adjacent spiral turns.

[0009] A second aspect of the present invention provides a cold shrink tubing protection device, including the cold shrink tubing support structure and protective components disposed at both ends of the support tube. The protective components include a protective cover and an inner support ring fixedly disposed in the middle of the protective cover. The inner support ring can be inserted into the inner side of the support tube from the end of the support tube to provide radial support to the support tube.

[0010] Furthermore, the inner support ring has an avoidance notch, which corresponds to the location of the pull-out strap.

[0011] Furthermore, the protective cover is provided with a plurality of elastic clamps spaced apart along the circumference of the inner support ring. The inner end of the elastic clamp is provided with an anti-slip pad. The elastic clamp can press the anti-slip pad against the outer surface of the cold shrink tube body, which is sleeved on the outer periphery of the cold shrink tube support structure, through elastic force.

[0012] Furthermore, the protective cover is also provided with a buffer pad, which is located on the outer periphery of the inner support ring and is used to abut against the end of the support tube.

[0013] Furthermore, the outer peripheral wall of the protective cover is provided with an anti-collision part, which protrudes outward from the protective cover in a radial direction. In the axial direction of the inner support ring, the end face of the anti-collision part away from the inner support ring protrudes from the end face of the protective cover away from the inner support ring.

[0014] Furthermore, the anti-collision part includes a suspended ring and a buffer sleeve. The suspended ring is integrally formed on the protective cover, and the buffer sleeve is fitted onto the outer surface of the suspended ring.

[0015] Compared with existing technologies, the cold shrink tubing support structure and protective device of this invention have the following advantages: the support strip includes an anti-scratch strip and a structural strip, with the anti-scratch strip positioned radially outside the structural strip and both integrally formed. The structural strip on the inner side provides sufficient radial stiffness, ensuring the cold shrink tubing body can be stably maintained in a pre-expanded state. Simultaneously, the anti-scratch strip on the outer side, as the medium in direct contact with the inner wall of the cold shrink tubing, isolates the relatively hard structural strip, thereby preventing the hard edges of the support tube from scratching and abrading the sealing adhesive layer of the inner wall of the cold shrink tubing body during the pulling and removal process, ensuring... The system ensures the airtightness of the cold shrink tubing body. Connecting bridges are installed between adjacent spiral turns of the support strip, allowing the support tube to maintain a stable tubular shape during transportation and storage. During removal, the connecting bridges break sequentially under the pulling force by pulling the pull strap, making the tearing removal method a controllable, gradual disassembly process along a preset spiral trajectory. This makes the removal of the support tube smoother and more stable, avoiding uneven tearing force that could cause the support strip to tear off the preset trajectory, scratching the cable sheath at the sealing location, or even accidental breakage of the support strip, thus ensuring the stability of on-site construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the cold shrink tubing support structure, the cold shrink tubing protection device, and the cold shrink tubing body according to an embodiment of the present invention. Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of the cold shrink tubing protection device according to an embodiment of the present invention; In the picture, 1. Support tube; 11. Support strip; 111. Anti-scratch strip; 1111. First slot; 1112. First block; 112. Structural strip; 1121. Second slot; 1122. Second block; 12. Connecting bridge; 2. Protective components; 21. Protective cover; 211. Elastic clamping plate; 2111. Anti-slip pad; 212. Buffer pad; 213. Anti-collision part; 2131. Suspension ring; 2132. Buffer sleeve; 22. Inner support ring body; 221. Avoidance notch; 3. Cold shrink tubing body. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] In the description of this invention, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "lateral," and "longitudinal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0019] In the description of this invention, the terms "provided with," "set up," "connected," and "placed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0021] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0022] like Figure 1 As shown, the first embodiment of the present invention provides a cold shrink tubing support structure, including a support tube 1. The support tube 1 is used to support the cold shrink tubing body 3 so that it is in a pre-expanded state. The support tube 1 includes a support strip 11 and a plurality of connecting bridges 12. The support strip 11 is spirally wound to form a tubular structure. One end of the support strip 11 is provided with a pull-out strap. The support strip 11 includes a scratch-resistant strip 111 and a structural strip 112. The scratch-resistant strip 111 and the structural strip 112 are integrally formed, and the scratch-resistant strip 111 is located on the radial outer side of the structural strip 112. Multiple connecting bridges 12 are connected between adjacent spiral turns of the support strip 11 to maintain the shape of the support tube 1, and the multiple connecting bridges 12 can break in sequence when the pull belt is subjected to a pulling force to achieve the gradual disintegration of the support tube 1.

[0023] Based on the above technical solution, the support strip 11 includes an anti-scratch strip 111 and a structural strip 112. The anti-scratch strip 111 is disposed radially outside the structural strip 112 and the two are integrally formed. The structural strip 112 located on the inner side provides sufficient radial stiffness to ensure that the cold shrink tubing body 3 can be stably maintained in the pre-expanded state. At the same time, the anti-scratch strip 111 located on the outer side, as a medium in direct contact with the inner wall of the cold shrink tubing, can isolate the relatively hard structural strip 112, thereby preventing the hard edge of the support tube 1 from scratching and abrading the sealing adhesive layer of the inner wall of the cold shrink tubing body 3 during the pulling and removal process, thus ensuring the tightness of the cold shrink tubing body 3. Sealing properties; connecting bridges 12 are set between adjacent spiral turns of the support bar 11, so that the support pipe 1 can maintain a stable tubular shape during transportation and storage by relying on the connecting bridges 12; when dismantling, by pulling the pull belt, the connecting bridges 12 can break sequentially under the action of the pull force, so that the tearing removal method becomes a controllable, step-by-step disassembly process along the preset spiral trajectory, making the removal of the support pipe 1 more stable and smooth, avoiding the support bar 11 from tearing outside the preset trajectory due to uneven tearing force, causing scratches on the surface of the cable to be sealed, or even the support bar 11 breaking unexpectedly, thus ensuring the stability of on-site construction.

[0024] Preferably, such as Figure 2 As shown, the anti-scratch strip 111 has a first slot 1111 that opens axially toward the support tube 1 along its extension direction, and a first locking block 1112 that protrudes axially along the support tube 1; the structural strip 112 has a second slot 1121 that matches the first locking block 1112 along its extension direction, and a second locking block 1122 that matches the first slot 1111; the first locking block 1112 is inserted into the second slot 1121, and the second locking block 1122 is inserted into the first slot 1111.

[0025] By setting a slot that opens axially toward the support tube 1 and a locking block that protrudes axially along the support tube 1, the anti-scratch strip 111 and the structural strip 112 form an interlocking structure that fits into each other on their cross-section. This engagement creates mechanical interference in the radial direction of the support tube 1. Even if the interface adhesion between the soft anti-scratch strip 111 and the hard structural strip 112 is insufficient during 3D printing, this mechanical structure can effectively lock the connection between the two components, preventing the anti-scratch strip 111 from peeling off or falling off from the radially outer side of the structural strip 112 under stress, thus preventing accidental scratches and ensuring the stability of the support strip 11. The overall stability of the structure is ensured. When the pull-out belt is subjected to tension and spirally dismantled, the support strip 11 will bear tensile stress and torsional stress. The tight engagement between the first locking block 1112 and the second locking groove 1121, and the second locking block 1122 and the first locking groove 1111, increases the contact area and mechanical interlocking force between the anti-scratch strip 111 and the structural strip 112. This effectively avoids the situation where the anti-scratch strip 111 is excessively stretched and deformed or even separated from the structural strip 112 during the tearing process due to the large difference in elastic modulus between soft and hard materials. This ensures that the two can be separated as a complete support strip as a whole.

[0026] Preferably, the anti-scratch strip 111 is made of thermoplastic polyurethane elastomer, and the structural strip 112 is made of polyethylene terephthalate-1,4-cyclohexanediol ester; the hardness of the anti-scratch strip 111 is lower than that of the structural strip 112.

[0027] Structural strip 112 is prepared using polyethylene terephthalate-1,4-cyclohexanediol ester. Its high elastic modulus, low shrinkage rate, and excellent creep resistance make it the main skeleton of the support tube 1, providing sufficient radial stiffness to resist the shrinkage stress of the cold-shrink tube body 3, ensuring that the support tube 1 does not buckle or collapse under long-term storage and transportation conditions. Scratch-resistant strip 111 is prepared using thermoplastic polyurethane elastomer. Its low hardness, high resilience, and wear resistance make it the outer interface, providing surface cushioning while reducing friction at the contact surface. The friction coefficient effectively eliminates the risk of mechanical scratches on the sealing adhesive layer of the inner wall of the cold shrink tube body 3 caused by the rigid structural strip 112 during the pulling process; in the hot melt molding process, the two materials exhibit good thermal compatibility and bonding performance, and can form dense intermolecular diffusion in the molten state, thereby improving the interfacial bonding strength between the anti-scratch strip 111 and the structural strip 112, effectively resisting the radial delamination tendency, preventing the anti-scratch strip 111 from peeling or falling off the surface of the structural strip 112 due to uneven force during the spiral dismantling process, and ensuring the integrity of the support tube 1 as an integral structure.

[0028] Preferably, such as Figure 1As shown, multiple connecting bridges 12 are spaced apart along the extension direction of the support bar 11. The connecting bridges 12 and the support bar 11 are integrally formed. The two ends of the connecting bridges 12 are respectively connected to the structural strips 112 of adjacent spiral turns.

[0029] The connecting bridge 12 is directly set between the rigid structural strips 112. When the pull is removed, the pulling force can be quickly transmitted to the connecting bridge 12 through the rigid frame. Compared with the connecting bridge 12 connected to the soft anti-scratch strip 111, the connecting bridge 12 connected to the rigid structural strip 112 can undergo brittle fracture when stress is concentrated. Compared with the connecting bridge 12 set on the anti-scratch strip 111, the phenomenon of fracture lag caused by excessive stretching of materials is avoided, ensuring that multiple connecting bridges 12 can break in sequence, and preventing the phenomenon of pull jamming caused by incomplete fracture.

[0030] A second embodiment of the present invention provides a cold shrink tubing protection device, such as... Figure 3 As shown, it includes a cold shrink tubing support structure and protective components 2 disposed at both ends of the support tube 1. The protective components 2 include a protective cover 21 and an inner support ring 22 fixedly disposed in the middle of the protective cover 21. The inner support ring 22 can be inserted into the inner side of the support tube 1 from the end of the support tube 1 to provide radial support for the support tube 1.

[0031] By inserting the inner support ring 22 into the inner side of the end of the support tube 1, it is equivalent to implanting a rigid skeleton from the port of the support tube 1. The inner support ring 22 directly bears the shrinkage pressure applied to the support tube 1 by the cold shrink tube body 3, which prevents the support tube 1 from elliptical deformation and inward collapse due to long-term pressure or collision, and ensures that the cold shrink tube column always maintains a standard pre-expansion shape before use.

[0032] Preferably, such as Figure 3 As shown, an avoidance notch 221 is provided on the inner support ring 22, and the avoidance notch 221 corresponds to the location of the pull-out strap.

[0033] The pull-out strap is usually located inside the port of the support tube 1. If the inner support ring 22 is a complete circular structure, it will cause a physical conflict with the pull-out strap when it is inserted into the support tube 1. By opening the clearance notch 221, space is provided for the pull-out strap, so that the inner support ring 22 can avoid pressing the pull-out strap when it is inserted into the support tube 1, which would cause the connecting bridge 12 to break and the support tube 1 to partially disintegrate when the cold shrink tube is not used. This allows the inner support ring 22 to be fully pushed into place, so that the end face of the protective cover 21 fits tightly with the end face of the support tube 1 or the cold shrink tube.

[0034] Preferably, such as Figure 3As shown, the protective cover 21 is provided with multiple elastic clamps 211 distributed circumferentially along the inner support ring 22. The inner end of the elastic clamp 211 is provided with an anti-slip pad 2111. The elastic clamp 211 can press the anti-slip pad 2111 against the outer surface of the cold shrink tube body 3, which is sleeved on the outer periphery of the cold shrink tube support structure, through elastic force.

[0035] Multiple elastic clamps 211 abut against the outer surface of the cold shrink tubing body 3, providing axial anchoring force for the cold shrink tubing and support tube 1. Even if the cold shrink tubing encounters severe bumps during transportation, the elastic clamps 211 can firmly clamp the cold shrink tubing and support tube 1, preventing the protective components 2 from falling off and ensuring the continuity of protection. The anti-slip pads 2111 increase the static friction coefficient of the contact surface, so that a small radial clamping force can generate a sufficiently large axial friction resistance, ensuring the fixing effect. As a buffer medium, the anti-slip pads 2111 expand the contact area, disperse the local pressure of the elastic clamps 211, and prevent the edges of the hard elastic clamps 211 from embedding into or scratching the outer surface of the cold shrink tubing body 3, ensuring that the appearance and sealing performance of the cold shrink tubing body 3 are not damaged.

[0036] Preferably, such as Figure 3 As shown, the protective cover 21 is also provided with a buffer pad 212, which is located on the outer periphery of the inner support ring 22 and is used to abut against the end of the support tube 1.

[0037] During logistics transportation or loading and unloading, the product may fall, causing the end face of the protective cover 21 to directly hit the ground. If there is a hard-to-hard rigid contact between the protective cover 21 and the end of the support tube 1, the impact force will be instantly transmitted to the end of the support tube 1. The buffer pad 212, as a compressible elastic medium (such as EVA foam, rubber, etc.), can undergo elastic deformation when axial impact occurs, thereby absorbing and dissipating the impact kinetic energy, avoiding edge chipping or plastic collapse due to excessive instantaneous impact load, ensuring the integrity of the support tube 1 structure. Moreover, the buffer pad 212 isolates the inner wall of the protective cover 21 from the direct rigid friction between the end face of the support tube 1, effectively preventing wear on the end face of the support tube 1 caused by vibration during long-distance transportation.

[0038] Preferably, such as Figure 3 As shown, the outer peripheral wall of the protective cover 21 is provided with an anti-collision part 213. The anti-collision part 213 protrudes outward in the radial direction from the protective cover 21. In the axial direction of the inner support ring 22, the end face of the anti-collision part 213 away from the inner support ring 22 protrudes from the end face of the protective cover 21 away from the inner support ring 22.

[0039] More preferably, such as Figure 3 As shown, the anti-collision part 213 includes a suspension ring 2131 and a buffer sleeve 2132. The suspension ring 2131 is integrally formed on the protective cover 21, and the buffer sleeve 2132 is sleeved on the outer surface of the suspension ring 2131.

[0040] The radially protruding anti-collision part 213 forms a support fulcrum, so that the outer surface of the cold shrink tube body 3 is suspended when laid flat to avoid contact with the ground and wear. At the same time, the axially protruding structure provides a priority impact point for the end face to protect the protective cover 21 body when it falls. By combining the rigid suspension ring 2131 with the soft buffer sleeve 2132, the synergy of rigid support and flexible energy absorption is achieved. While ensuring that the component is stably suspended, it effectively buffers external impacts and comprehensively protects the appearance and structural safety of the product during transportation and storage.

[0041] In summary, this invention provides a cold shrink tubing support structure and a cold shrink tubing protection device. The support bar 11 includes an anti-scratch strip 111 and a structural strip 112. The anti-scratch strip 111 is positioned radially outside the structural strip 112, and the two are integrally formed. The structural strip 112, located on the inner side, provides sufficient radial stiffness to ensure that the cold shrink tubing body 3 can be stably maintained in a pre-expanded state. Simultaneously, the anti-scratch strip 111, located on the outer side, serves as a medium in direct contact with the inner wall of the cold shrink tubing, isolating the relatively hard structural strip 112. This prevents the hard edge of the support tube 1 from scratching and abrading the sealing layer of the inner wall of the cold shrink tubing body 3 during removal, ensuring the sealing performance of the cold shrink tubing body 3. Connecting bridges 12 are provided between adjacent spiral turns of the support bar 11, allowing the support tube 1 to maintain a stable tubular shape during transportation and storage. During removal, by pulling the pull strap, the connecting bridges 12 can break sequentially under the pulling force, enabling tear-and-remove removal. The controlled, step-by-step disassembly process along a preset spiral trajectory makes the removal of the support tube 1 smoother and more stable. This avoids uneven tearing force that could cause the support strip 11 to tear off the preset trajectory, scratching the cable sheath at the sealing location, or even causing the support strip 11 to break unexpectedly, thus ensuring the stability of on-site construction. By setting protective components 2 at both ends of the support tube 1, and using the inner support ring 22 fixed in the middle of the protective cover 21 inserted into the inner side of the end of the support tube 1, radial support is provided for the support tube 1, which counteracts the shrinkage pressure of the cold shrink tube body 3 and prevents the support tube 1 from collapsing, buckling, or elliptical deformation due to pressure. At the same time, the protective components 2 provide all-round physical shielding and restriction for the end of the support tube 1, effectively preventing the support tube 1 from loosening, the connecting bridge 12 from breaking prematurely, or the support structure from disintegrating due to vibration and impact during long-distance transportation, storage, or accidental drops. This ensures that the product always maintains its standard pre-expansion shape and structural integrity before delivery for construction.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A cold shrink tubing support structure, comprising a support tube (1), said support tube (1) for supporting the cold shrink tubing body (3) to place it in a pre-expanded state, characterized in that, The support tube (1) includes a support strip (11) and multiple connecting bridges (12). The support strip (11) is spirally wound to form a tubular structure. One end of the support strip (11) is provided with a pull-out strap. The support strip (11) includes a scratch-resistant strip (111) and a structural strip (112). The scratch-resistant strip (111) and the structural strip (112) are integrally formed, and the scratch-resistant strip (111) is located on the radial outer side of the structural strip (112). Multiple connecting bridges (12) are connected between adjacent spiral turns of the support strip (11) to maintain the shape of the support tube (1), and multiple connecting bridges (12) can break in sequence when the pull strip is subjected to a pulling force to achieve the gradual disintegration of the support tube (1).

2. The cold shrink tubing support structure according to claim 1, characterized in that, The anti-scratch strip (111) has a first slot (1111) that opens axially toward the support tube (1) along its extension direction, and a first block (1112) that protrudes axially along the support tube (1); the structural strip (112) has a second slot (1121) that matches the first block (1112) along its extension direction, and a second block (1122) that matches the first slot (1111); the first block (1112) is inserted into the second slot (1121), and the second block (1122) is inserted into the first slot (1111).

3. The cold shrink tubing support structure according to claim 1, characterized in that, The anti-scratch strip (111) is made of thermoplastic polyurethane elastomer, and the structural strip (112) is made of polyethylene terephthalate-1,4-cyclohexanediol ester; the hardness of the anti-scratch strip (111) is lower than the hardness of the structural strip (112).

4. The cold shrink tubing support structure according to claim 1, characterized in that, Multiple connecting bridges (12) are spaced apart along the extension direction of the support bar (11). The connecting bridges (12) and the support bar (11) are integrally formed. The two ends of the connecting bridges (12) are respectively connected between the structural strips (112) of adjacent spiral turns.

5. A cold shrink tubing protection device, characterized in that, The cold shrink tubing support structure as described in any one of claims 1-4 further includes protective components (2) disposed at both ends of the support tube (1). The protective components (2) include a protective cover (21) and an inner support ring (22) fixedly disposed in the middle of the protective cover (21). The inner support ring (22) can be inserted into the inner side of the support tube (1) from the end of the support tube (1) to provide radial support for the support tube (1).

6. The cold shrink tubing protection device according to claim 5, characterized in that, An avoidance notch (221) is provided on the inner support ring (22), and the avoidance notch (221) corresponds to the location of the pull strip.

7. The cold shrink tubing protection device according to claim 5, characterized in that, The protective cover (21) is provided with a plurality of elastic clamps (211) spaced apart along the circumference of the inner support ring (22). The inner end of the elastic clamp (211) is provided with an anti-slip pad (2111). The elastic clamp (211) can press the anti-slip pad (2111) against the outer surface of the cold shrink tube body (3) sleeved on the outer periphery of the cold shrink tube support structure by elastic force.

8. The cold shrink tubing protection device according to claim 5, characterized in that, The protective cover (21) is also provided with a buffer pad (212), which is located on the outer periphery of the inner support ring (22) and is used to abut against the end of the support tube (1).

9. The cold shrink tubing protection device according to claim 5, characterized in that, The protective cover (21) has an anti-collision part (213) on its outer peripheral wall. The anti-collision part (213) protrudes outward in the radial direction from the protective cover (21). In the axial direction of the inner support ring (22), the anti-collision part (213) protrudes from the end face of the protective cover (21) away from the inner support ring (22).

10. The cold shrink tubing protection device according to claim 9, characterized in that, The anti-collision part (213) includes a suspended ring (2131) and a buffer sleeve (2132). The suspended ring (2131) is integrally formed on the protective cover (21), and the buffer sleeve (2132) is fitted on the outer surface of the suspended ring (2131).

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