Cable protection tube with good tensile property

Abstract

The invention provides a cable protection pipe with good tensile property, and belongs to the technical field of cable protection pipes. Comprising an inner protection pipe layer, a tensile layer is arranged on the periphery of the outer side wall of the inner protection pipe layer, an outer protection pipe layer is arranged on the periphery of the outer side wall of the tensile layer, the tensile layer comprises a plurality of longitudinal tensile strips extending in the axial direction of the pipe, and a plurality of first rubber rings fixedly connected with the outer side wall of the inner protection pipe layer are arranged between the inner side walls of the longitudinal tensile strips at equal intervals. According to the invention, a multi-layer structural design is adopted, and the inner protective pipe layer and the outer protective pipe layer made of high-density polyethylene materials are matched with a plurality of longitudinal tensile strips, a plurality of rubber rings I and a plurality of rubber rings II, so that the cable protective pipe has good tensile property, and the cable protective pipe is prevented from being damaged by tension; the cable can be flexibly clamped and positioned between the cable limiting plates through cooperation with the cable support structure, the cables are effectively prevented from being disorderly wound together in the cable protection pipe, and then the cables can be well protected.

Description

Technical Field

[0001] The present invention provides a cable protection pipe with good tensile performance, belonging to the technical field of cable protection pipes. Background Art

[0002] A cable protection pipe refers to a metal protection pipe with a certain mechanical strength, which is laid on the outer layer of the cable to prevent the cable from being damaged. The cable protection pipe is mainly installed in the section where the communication cable crosses the power line to prevent the power line from breaking and causing a short-circuit accident, causing the communication cable and the steel wire rope to be electrified, so as to protect the cable, the switch, the circuit board, and even the whole machine from being burned out, and also playing a certain role in isolating the magnetic field interference of the power line. The currently used cable protection pipes include: steel pipes, cast iron pipes, rigid polyvinyl chloride pipes, clay pipes, concrete pipes, asbestos cement pipes, etc. Most of the cable protection pipes are made of metal materials, and among them, galvanized steel pipes are widely used because of their good anti-corrosion performance.

[0003] The existing cable protection pipes can basically meet the normal use requirements. They are usually designed with an integrally formed structure and have relatively poor tensile performance. In actual use, such as in direct burial underground, on bridges or mobile equipment, where there are high requirements for stretching and bending, it is easy to cause the cable protection pipe to be damaged by tension, and then the cable cannot be protected. Based on this, the present invention provides a cable protection pipe with good tensile performance. Summary of the Invention

[0004] The technical problem solved by the present invention is that it is usually designed with an integrally formed structure, has relatively poor tensile performance, is easy to cause the cable protection pipe to be damaged by tension, and then the cable cannot be protected.

[0005] To solve the technical problem, the technical solution provided by the present invention is: a cable protection pipe with good tensile performance, including an inner protection pipe layer. A tensile layer is provided around the outer sidewall of the inner protection pipe layer. An outer protection pipe layer is provided around the outer sidewall of the tensile layer. A second wear-resistant layer is provided around the outer sidewall of the outer protection pipe layer to resist the frictional wear when the cable protection pipe moves on the ground. A first wear-resistant layer is provided around the inner sidewall of the inner protection pipe layer to resist the frictional wear when the cable moves inside the pipe. The tensile layer includes a plurality of longitudinal tensile bars extending along the pipe axis to effectively enhance the tensile performance of the cable protection pipe. A plurality of rubber ring rings I fixedly connected to the outer sidewall of the inner protection pipe layer are equidistantly arranged between the inner sidewalls of the plurality of longitudinal tensile bars. A plurality of rubber ring rings II fixedly connected to the inner sidewall of the outer protection pipe layer are equidistantly arranged between the outer sidewalls of the plurality of longitudinal tensile bars. The rubber ring rings I and the rubber ring rings II have good resilience to enhance the tensile performance while maintaining flexibility. A cable support structure is provided between the inner sidewalls of the first wear-resistant layer to separate a plurality of cables.

[0006] Furthermore, the cable support structure includes a central support placed at the central axis of the inner protective tube layer, the interior of the central support is hollow to save materials, the circumference of the outer wall of the central support is provided with a plurality of partition plates fixedly connected to the inner wall of the wear-resistant layer, the central support and the partition plates are integrally formed, and the two side walls of the partition plates are elastically connected with cable limiting plates for clamping and positioning each cable located between the partition plates between the cable limiting plates.

[0007] Furthermore, buffer pads are provided on the side walls of the cable limiting plates that are close to each other.

[0008] Furthermore, a plurality of springs are fixedly connected between the cable limiting plate and the partition plate.

[0009] Furthermore, the cross section of the inner protective tube layer is in an I-shape, and the tensile layer is wrapped between the inner protective tube layer and the outer protective tube layer.

[0010] Furthermore, the wear-resistant layer 1 and the wear-resistant layer 2 are both made of polyolefin material, which has good hand feel, wear resistance, insulation, transparency and chemical corrosion resistance, and is used to resist the friction and wear of the cable when it moves in the pipe, and is used to resist the friction and wear of the cable protection pipe when it moves on the ground.

[0011] Furthermore, the inner protective tube layer and the outer protective tube layer are made of high-density polyethylene material, which has excellent tensile strength and compressive resistance and is used to maintain structural integrity when subjected to external pressure or tension.

[0012] Furthermore, the number of the longitudinal tensile strips is not less than 8, and the spacing between the rubber ring 2 and the rubber ring 1 is 100-150 mm, so as to save material costs while ensuring tensile performance.

[0013] Furthermore, the outer wall of the inner protective tube layer is provided with a plurality of annular grooves 1 matching the rubber ring 1, and the inner wall of the outer protective tube layer is provided with a plurality of annular grooves 2 matching the rubber ring 2, so as to limit the rubber ring 1 and the rubber ring 2.

[0014] Advantages of the present invention: By adopting a multi-layer structure design, with an inner protective pipe layer and an outer protective pipe layer made of high-density polyethylene material, the structural integrity can be maintained when bearing external pressure or tension. With several longitudinal tensile bars extending along the pipe axis, the tensile performance of the cable protection pipe can be effectively enhanced. Together with rubber ring one and rubber ring two having good resilience performance, the tensile performance can be strengthened while maintaining flexibility, enabling the cable protection pipe to have good tensile performance to prevent the cable protection pipe from being damaged by tension. By cooperating with the cable support structure, the cable can be flexibly clamped and positioned between the cable limiting plates, effectively preventing the cables from being randomly wound together inside the cable protection pipe, and thus being able to well protect the cables. Description of the Drawings

[0015] Figure 1 Structural schematic diagram of a cable protection pipe with good tensile performance according to the present invention Figure 1 。

[0016] Figure 2 Structural schematic diagram of a cable protection pipe with good tensile performance according to the present invention Figure 2 。

[0017] Figure 3 Structural schematic diagram of a cable protection pipe with good tensile performance according to the present invention Figure 3 。

[0018] Figure 4 Planar schematic diagram of a cable protection pipe with good tensile performance according to the present invention.

[0019] 1. First wear-resistant layer; 2. Inner protective pipe layer; 3. Tensile layer; 4. Second wear-resistant layer; 5. Cable support structure; 6. Outer protective pipe layer; 30. Longitudinal tensile bar; 31. First rubber ring; 32. Second rubber ring; 33. First annular groove; 34. Second annular groove; 50. Central support; 51. Partition board; 52. Cable limiting plate; 53. Buffer pad; 54. Spring. Detailed Embodiments

[0020] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to its structure, and they are relative concepts. Therefore, it is possible to change accordingly according to their different positions and different usage states; so, these or other orientation terms should not be interpreted as restrictive terms.

[0021] In this specification, the singular forms of "a", "the" and "said" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It should be understood that the implementation methods described herein are only used to explain this application and are not used to limit this application.

[0023] According to the attached Figure 1 , 3 4: The present invention provides a cable protection tube with good tensile performance, including an inner protective tube layer 2, a tensile layer 3 is arranged around the outer wall of the inner protective tube layer 2, an outer protective tube layer 6 is arranged around the outer wall of the tensile layer 3, the cross section of the inner protective tube layer 2 is I-shaped, the tensile layer 3 is wrapped between the inner protective tube layer 2 and the outer protective tube layer 6, the tensile layer 3 includes a plurality of longitudinal tensile strips 30 extending along the axial direction of the tube, so as to effectively enhance the tensile performance of the cable protection tube, a plurality of rubber rings 31 fixedly connected to the outer wall of the inner protective tube layer 2 are equidistantly arranged between the inner walls of the plurality of longitudinal tensile strips 30, a plurality of rubber rings 2 32 fixedly connected to the inner wall of the outer protective tube layer 6 are equidistantly arranged between the outer walls of the plurality of longitudinal tensile strips 30, the number of the longitudinal tensile strips 30 is not less than 8, and the spacing between the rubber rings 2 32 and the rubber rings 1 31 is 10 0-150mm, so as to save material costs on the basis of ensuring tensile performance, the rubber ring 1 31 and the rubber ring 2 32 have good resilience, so as to enhance the tensile performance while maintaining flexibility, the inner protective tube layer 2 and the outer protective tube layer 6 are made of high-density polyethylene material, and the high-density polyethylene material has excellent tensile strength and compressive resistance, so as to maintain structural integrity when subjected to external pressure or tension, and the high-density polyethylene material is reinforced by adding glass fiber or carbon fiber, and the tensile strength can reach 20-30MPa while maintaining flexibility, and the outer side wall of the inner protective tube layer 2 is provided with a plurality of annular grooves 1 33 matching the rubber ring 1 31, and the inner side wall of the outer protective tube layer 6 is provided with a plurality of annular grooves 2 34 matching the rubber ring 2 32, so as to limit the rubber ring 1 31 and the rubber ring 2 32.

[0024] As the instruction manual Figure 1 , 2As shown: a cable support structure 5 is provided between the inner side walls of the wear-resistant layer 1 to separate a plurality of cables. The cable support structure 5 includes a central support 50 placed at the central axis of the inner protective tube layer 2. The central support 50 is hollow inside to save materials. A plurality of partition plates 51 fixedly connected to the inner side walls of the wear-resistant layer 1 are provided on the circumference of the outer side wall of the central support 50. The central support 50 and the partition plates 51 are integrally formed. Cable limiting plates 52 are elastically connected to the two side walls of the partition plates 51 to clamp and position the cables between the partition plates 51 between the cable limiting plates 52. The cable limiting plates 52 are close to the side walls. A buffer pad 53 is provided on it to play a buffering role. A plurality of springs 54 are fixedly connected between the cable limit plate 52 and the partition plate 51. Specifically, a cable placement space is formed between the partition plate 51 and the wear-resistant layer 1 and the central support 50, and each cable is placed in each placement space respectively. At this time, the cable body of the cable pushes the cable limit plate 52 outward, thereby driving the spring 54 to be compressed. The spring 54 in the compressed state has a tendency to rebound and reset, so that the cable can be flexibly clamped and positioned between the cable limit plates 52, effectively avoiding the cables from being tangled together in the cable protection tube in a disorderly manner, and the cables are clearly distributed.

[0025] As the instruction manual Figure 1 As shown: the outer wall of the outer protective tube layer 6 is provided with a wear-resistant layer 2 4 to resist the friction and wear of the cable protection tube when it moves on the ground, and the inner wall of the inner protective tube layer 2 is provided with a wear-resistant layer 1 to resist the friction and wear of the cable when it moves in the tube. The wear-resistant layer 1 and the wear-resistant layer 2 4 are both made of polyolefin material. Polyolefin has good hand feel, wear resistance, insulation, transparency and chemical corrosion resistance. It has good resistance to corrosion by chemical substances such as acid, alkali, and salt, and is used to resist the friction and wear of the cable when it moves in the tube. In terms of environmental protection and economic benefits, polyolefin materials can be recycled to meet the needs of sustainable development. It has high production efficiency, low cost and significant economic benefits.

[0026] The cable protection tube of the present embodiment has good tensile performance. When in use, the inner protection tube layer 2 and the outer protection tube layer 6 made of high-density polyethylene material can maintain structural integrity when subjected to external pressure or tension. The combination of a plurality of longitudinal tensile strips 30 extending along the axial direction of the tube can effectively enhance the tensile performance of the cable protection tube. The combination of rubber ring 1 31 and rubber ring 2 32 with good resilience can enhance the tensile performance while maintaining flexibility, so that the cable protection tube has good tensile performance. Through the cable support structure 5, under the joint action of the spring 54, the partition plate 51, etc., the cable can be flexibly clamped and positioned between the cable limit plates 52, effectively avoiding the cables from being entangled in a disorderly manner in the cable protection tube. The cables are clearly distributed and the use effect is greatly improved.

[0027] The above description of the present invention and its embodiments is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and, without departing from the spirit of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A cable protection pipe with good tensile properties, characterized in that: It includes an inner protective pipe layer (2). A tensile layer (3) is provided around the outer sidewall of the inner protective pipe layer (2). An outer protective pipe layer (6) is provided around the outer sidewall of the tensile layer (3). A second wear-resistant layer (4) is provided around the outer sidewall of the outer protective pipe layer (6) for resisting frictional wear when the cable protection pipe moves on the ground. A first wear-resistant layer (1) is provided around the inner sidewall of the inner protective pipe layer (2) for resisting frictional wear when the cable moves inside the pipe. The tensile layer (3) includes a plurality of longitudinal tensile bars (30) extending along the axial direction of the pipe for effectively enhancing the tensile performance of the cable protection pipe. A plurality of first rubber ring rings (31) fixedly connected to the outer sidewall of the inner protective pipe layer (2) are equidistantly arranged between the inner sidewalls of the plurality of longitudinal tensile bars (30). A plurality of second rubber ring rings (32) fixedly connected to the inner sidewall of the outer protective pipe layer (6) are equidistantly arranged between the outer sidewalls of the plurality of longitudinal tensile bars (30). The first rubber ring ring (31) and the second rubber ring ring (32) have good resilience performance for strengthening the tensile performance while maintaining flexibility. A cable support structure (5) is provided between the inner sidewalls of the first wear-resistant layer (1) for separating a plurality of cables from each other.

2. The cable protection pipe with good tensile property according to claim 1, wherein: The cable support structure (5) includes a central support (50) placed at the central axis of the inner protective pipe layer (2). The interior of the central support (50) is hollow for saving materials. A plurality of partition plates (51) fixedly connected to the inner sidewall of the first wear-resistant layer (1) are circumferentially arranged on the outer sidewall of the central support (50). The central support (50) and the partition plate 51 are integrally formed. Cable limiting plates (52) are elastically connected to both sidewalls of the partition plate (51) for clamping and positioning each cable located between the partition plates (51) between the cable limiting plates 52.

3. The cable protection pipe with good tensile property according to claim 2, characterized in that: Buffer pads (53) are provided on the sidewalls of the cable limiting plates (52) close to each other.

4. The cable protection pipe with good tensile property according to claim 2, wherein: A plurality of springs (54) are fixedly connected between the cable limiting plates (52) and the partition plates (51).

5. The cable protection pipe with good tensile property according to claim 1 is characterized in that: The cross-section of the inner protective pipe layer (2) is in an I shape, and the tensile layer (3) is wrapped between the inner protective pipe layer (2) and the outer protective pipe layer (6).

6. The cable protection pipe with good tensile property according to claim 1, characterized in that: Both the first wear-resistant layer (1) and the second wear-resistant layer (4) are made of polyolefin materials. Polyolefin has good hand feel, wear resistance, insulation, transparency and chemical corrosion resistance for resisting frictional wear when the cable moves inside the pipe and for resisting frictional wear when the cable protection pipe moves on the ground.

7. The cable protection pipe with good tensile property according to claim 1, characterized in that: The inner protective pipe layer (2) and the outer protective pipe layer (6) are made of high-density polyethylene materials. High-density polyethylene materials have excellent tensile strength and compressive performance for maintaining structural integrity when bearing external pressure or tension.

8. The cable protection pipe with good tensile property according to claim 1, characterized in that: The number of the longitudinal tensile bars (30) is not less than 8, and the distance between the second rubber ring ring (32) and the first rubber ring ring (31) is 100 - 150 mm. For saving material costs on the basis of ensuring tensile performance.

9. The cable protection pipe with good tensile property according to claim 1, characterized in that: A plurality of first annular grooves (33) matching with the first rubber ring (31) are arranged on the outer side wall of the inner protection tube layer (2), and a plurality of second annular grooves (34) matching with the second rubber ring (32) are arranged on the inner side wall of the outer protection tube layer (6) for limiting the first rubber ring (31) and the second rubber ring (32).

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