Spiral protective sleeve with good heat insulation effect
The spiral protective sleeve, with its multi-layered composite structure and tightly connected design, solves the problems of loosening and heat insulation in traditional spiral protective sleeves under high temperature and vibration environments, achieving efficient mechanical protection and insulation performance, and ensuring cable safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGHE COUNTY GREAT WALL SEALING CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional spiral protective sleeves are prone to loosening in high-temperature environments, failing to provide effective heat insulation, leading to aging and mechanical damage to the cable insulation layer, and easily losing their protective function in vibration environments.
The spiral protective sleeve, which adopts a multi-layer composite structure, includes a wear-resistant and heat-insulating layer, a shaping layer, a soft layer, and an insulating contact layer. Combined with an insert plate, insert groove, extrusion pad, and adhesive design, it ensures a tight connection, enhances tensile strength and deformation resistance, and provides cushioning and insulation protection.
It improves the heat insulation performance and connection stability of the spiral protective sleeve, prevents loosening, enhances the mechanical protection and insulation performance of the cable, reduces heat conduction, avoids cable damage and failure, and improves safety and practicality.
Smart Images

Figure CN224497979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spiral protective sleeve technology, and more specifically, to a spiral protective sleeve with good heat insulation effect. Background Technology
[0002] Spiral protective sleeves, also known as spiral wound tubes, coiled tubes, or corrugated tubes, are tubular sheaths widely used to wrap and protect wires and cables, hydraulic hoses, pneumatic pipelines, etc. Their core value lies in providing mechanical protection, organization, and a certain degree of environmental protection.
[0003] When traditional protective sleeves are near engine exhaust pipes, industrial heat sources, or high-temperature equipment, heat can easily penetrate the sleeve, causing the internal cable insulation layer to age, hydraulic hoses to deform or even melt, leading to malfunctions or fires. Under complex working conditions (such as vibration of construction machinery, compression of heavy objects, and friction from the ground), the sleeve is easily flattened, scratched, or torn, losing its protective function. Ordinary spiral sleeves are prone to loosening and slipping at the joints after winding, especially in vibration environments, resulting in discontinuous protection and exposed cables. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the problems existing in the prior art, this utility model provides a spiral protective sleeve with good heat insulation effect to solve the technical problem mentioned in the background art that the interface of ordinary spiral protective sleeves is easy to loosen after winding.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a spiral protective sleeve with good heat insulation effect, comprising a protective sleeve body, the protective sleeve body being spiral-shaped, an insertion plate being provided on one side of the protective sleeve body, an insertion groove being provided on the other side, compression pads being provided on both sides of the insertion groove, the protective sleeve body including a wear-resistant heat insulation layer, a shaping layer being provided inside the wear-resistant heat insulation layer, a soft layer being provided inside the shaping layer, and an insulating contact layer being provided inside the soft layer.
[0008] The present invention is further provided with a triangular bracket between the wear-resistant heat insulation layer and the shaping layer, and a support groove is formed between the triangular bracket and the wear-resistant heat insulation layer and between the triangular bracket and the shaping layer, so as to facilitate the buffering of bending, collision, etc.
[0009] The present invention is further configured such that steel wires are provided inside the shaping layer, which greatly enhances the overall tensile strength and deformation resistance of the sheath, so that it can quickly rebound and maintain its original tubular shape after being subjected to force or bending, thus avoiding permanent collapse.
[0010] The present invention is further configured such that multiple steel wires are arrayed within the shaping layer, which further enhances the overall tensile strength and deformation resistance of the sheath, enabling it to quickly rebound and maintain its original tubular shape after being subjected to force or bending, thus avoiding permanent collapse.
[0011] The present invention is further configured such that wear-resistant strips are provided on the outer side of the wear-resistant heat insulation layer, which is the part that wears first, thereby improving the wear resistance.
[0012] The present invention is further configured such that auxiliary deformation grooves are provided between the wear-resistant strips, which provide additional space for expansion and deformation in the parts that need to be bent.
[0013] The present invention is further configured such that the interior of the insulating contact layer has friction texture, which increases the contact surface and reduces pressure, so as to not only gently fix the cable to prevent it from being damaged by excessive shaking and friction inside the sheath, but also facilitate smooth pulling when threading the cable.
[0014] The present invention is further provided with an adhesive in the insertion slot to facilitate the connection between the insertion plate and the insertion slot.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a spiral protective sleeve with good heat insulation effect, which has the following beneficial effects:
[0017] 1. The multi-layer composite structure of wear-resistant heat insulation layer, shaping layer, soft layer and insulating contact layer is adopted, which improves the wear resistance, heat insulation and deformation resistance of the main body of the protective sleeve. The multiple groups work together to form an efficient heat insulation barrier, which greatly slows down the conduction speed of external heat to internal cables / pipes.
[0018] 2. The unique design of the insert plate, insert groove, squeeze pad and adhesive ensures that the insert plate of this ring is embedded into the insert groove of the next ring during winding. The squeeze pads on both sides of the insert groove provide initial compression force, and the insert plate finally abuts against the adhesive, ensuring that the spiral connection is tight, firm and not easy to loosen, forming a continuous and seamless tubular protection.
[0019] 3. Auxiliary deformation grooves provide additional expansion and deformation space at bending points, allowing the sheath to smoothly and flexibly adapt to various bending angles, avoiding cracks caused by hard bends and stress concentration. The soft layer provides internal cushioning to absorb stress during bending. The insulating contact layer, as the innermost layer in direct contact with the cable, effectively isolates current with its insulating material, preventing electric shock to personnel and short circuits to equipment in the event of cable damage and leakage, thus improving intrinsic safety. The soft material, combined with the friction texture design, increases the contact surface and reduces pressure, gently fixing the cable to prevent excessive shaking and friction damage within the sheath, and facilitating smooth pulling during cable threading, thus improving practicality. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the protective sleeve body in this utility model;
[0021] Figure 2 This is a large-scale schematic diagram of a local structure in Figure A;
[0022] Figure 3 This is a cross-sectional structural diagram of the main body of the protective sleeve of this utility model;
[0023] Figure 4 This is a cross-sectional view of the main body of the protective sleeve from another angle in this utility model;
[0024] Figure 5 This is a schematic diagram of the combined structure of the shaping layer and the steel wire in this utility model.
[0025] In the diagram: 1. Protective cover body; 2. Insertion plate; 3. Insertion groove; 4. Extrusion pad; 5. Wear-resistant and heat-insulating layer; 6. Shaping layer; 7. Soft layer; 8. Insulating contact layer; 9. Triangular bracket; 10. Support groove; 11. Steel wire; 12. Wear-resistant strip; 13. Auxiliary deformation groove; 14. Friction texture; 15. Adhesive. Detailed Implementation
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0029] Please see Figures 1-5 A spiral protective sleeve with good heat insulation effect includes a protective sleeve body 1, which is spiral strip-shaped. An insertion plate 2 is provided on one side of the protective sleeve body 1, and an insertion groove 3 is provided on the other side. Compression pads 4 are provided on both sides of the insertion groove 3. The protective sleeve body 1 includes a wear-resistant heat insulation layer 5. A shaping layer 6 is provided inside the wear-resistant heat insulation layer 5. A soft layer 7 is provided inside the shaping layer 6. An insulating contact layer 8 is provided inside the soft layer 7. Adhesive 15 is provided in the insertion groove 3.
[0030] In this embodiment, when using the protective sleeve body 1, the insertion plate 2 on one side of the protective sleeve body 1 is spirally inserted into the insertion groove 3 of the next layer of the protective sleeve body 1, abutting against the adhesive 15, and is engaged and connected by the compression pads 4 on both sides of the insertion groove 3, which facilitates the spiral connection of the protective sleeve body 1, and can be further wound into a tube to prevent loosening.
[0031] Please see Figures 3-5 As one embodiment of the protective sleeve body 1: a triangular bracket 9 is provided between the wear-resistant heat insulation layer 5 and the shaping layer 6, and a support groove 10 is formed between the triangular bracket 9 and the wear-resistant heat insulation layer 5 and between the triangular bracket 9 and the shaping layer 6. A steel wire 11 is provided inside the shaping layer 6, and multiple steel wires 11 are arranged in an array inside the shaping layer 6. Wear-resistant strips 12 are provided on the outside of the wear-resistant heat insulation layer 5, and auxiliary deformation grooves 13 are provided between the wear-resistant strips 12. Friction textures 14 are provided inside the insulating contact layer 8.
[0032] More specifically, the wear-resistant strip 12 is a silica-modified EPDM rubber strip. The wear-resistant strip 12 is located on the outermost part of the protective sleeve body 1, which is the first part to wear. An auxiliary deformation groove 13 is provided to assist in deformation when the protective sleeve body 1 is extended and bent. The wear-resistant heat insulation layer 5 directly protects the cable. The wear-resistant heat insulation layer 5 enhances its resistance to deformation and scratches by increasing its hardness, thereby improving its wear resistance. The wear-resistant heat insulation layer 5 limits the heat conduction path by blocking heat conduction, thus preventing damage to the coiled pipes or cables inside the spiral protective sleeve body 1. The triangular bracket 9 is heat-pressed and fused with the wear-resistant heat insulation layer 5. The bracket 9 and the shaping layer 6 are heat-pressed together to facilitate impact resistance. The shaping layer 6 is made of rubber material, and the steel wire 11 is wrapped inside the shaping layer 6 to facilitate deformation adjustment. The flexible layer 7 is heat-pressed together with the shaping layer 6. The flexible layer 7 is made of foam sponge to facilitate softness, shock absorption, and protection. The insulating contact layer 8 is in direct contact with the coiled cable. The insulating contact layer 8 avoids damage to the cable and withstands the heat dissipated when the cable is transporting the medium, maintaining stable performance and improving the protection effect of the pipeline or cable. When protecting the cable, the insulating contact layer 8 has insulating properties to prevent leakage damage caused by cable breakage or other problems, thus improving safety.
[0033] In summary, when using or operating the overall equipment: when using the protective sleeve body 1, the insertion plate 2 on one side of the protective sleeve body 1 is spirally inserted into the insertion groove 3 of the next layer of the protective sleeve body 1, abutting against the adhesive 15, and connected by the compression pads 4 on both sides of the insertion groove 3, which facilitates the spiral connection of the protective sleeve body 1, and can be further wound into a tube to prevent loosening.
[0034] The wear-resistant strip 12 is a silica-modified EPDM rubber strip. It is positioned on the outermost part of the protective sleeve body 1 and is the first area to wear. An auxiliary deformation groove 13 is provided to assist deformation during bending and extension of the protective sleeve body 1. The wear-resistant and heat-insulating layer 5 directly protects the cable. By increasing its hardness, the wear-resistant and heat-insulating layer 5 enhances its resistance to deformation and scratches, thereby increasing its wear resistance. The wear-resistant and heat-insulating layer 5 also limits heat conduction by blocking the heat transfer path, preventing damage to the coiled pipes or cables within the spiral protective sleeve body 1. The triangular bracket 9 is heat-pressed and fused with the wear-resistant and heat-insulating layer 5. The shaping layer 6 is heat-pressed and fused together with the shaping layer 6, which facilitates impact resistance. The shaping layer 6 is made of rubber material, and the steel wire 11 is wrapped inside the shaping layer 6 to facilitate deformation adjustment. The flexible layer 7 is heat-pressed and connected to the shaping layer 6. The flexible layer 7 is made of foam sponge, which facilitates softness, shock absorption and protection. The insulating contact layer 8 is in direct contact with the coiled cable. The insulating contact layer 8 avoids damage to the cable and withstands the heat dissipated when the cable is transporting the medium and maintains stable performance, improving the protection effect of the pipeline or cable. When protecting the cable, the insulating contact layer 8 has insulating properties to prevent leakage damage caused by cable breakage or other problems, thus improving safety.
[0035] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.
[0036] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A spiral protective sleeve with good heat insulation effect, comprising a protective sleeve body (1), characterized in that: The protective sleeve body (1) is spiral ribbon-shaped. One side of the protective sleeve body (1) is provided with an insertion plate (2) and the other side is provided with an insertion groove (3). The two sides of the insertion groove (3) are provided with compression pads (4). The protective sleeve body (1) includes a wear-resistant and heat-insulating layer (5). The wear-resistant and heat-insulating layer (5) is provided with a shaping layer (6) inside. The shaping layer (6) is provided with a soft layer (7) inside. The soft layer (7) is provided with an insulating contact layer (8) inside.
2. The spiral protective sleeve with good heat insulation effect according to claim 1, characterized in that: A triangular bracket (9) is provided between the wear-resistant heat insulation layer (5) and the shaping layer (6), and a support groove (10) is formed between the triangular bracket (9) and the wear-resistant heat insulation layer (5) and between the triangular bracket (9) and the shaping layer (6).
3. The spiral protective sleeve with good heat insulation effect according to claim 1, characterized in that: The shaping layer (6) contains steel wires (11).
4. The spiral protective sleeve with good heat insulation effect according to claim 3, characterized in that: Multiple steel wires (11) are arranged in an array within the shaping layer (6).
5. The spiral protective sleeve with good heat insulation effect according to claim 1, characterized in that: The wear-resistant heat insulation layer (5) is provided with wear-resistant strips (12) on the outside.
6. The spiral protective sleeve with good heat insulation effect according to claim 5, characterized in that: An auxiliary deformation groove (13) is provided between the wear-resistant strips (12).
7. The spiral protective sleeve with good heat insulation effect according to claim 1, characterized in that: The insulating contact layer (8) has friction textures (14) inside.
8. The spiral protective sleeve with good heat insulation effect according to claim 1, characterized in that: The insertion slot (3) is provided with adhesive (15).