High impact modified PVC cable protection pipe

Abstract

The utility model discloses a kind of high impact modified PVC cable protection pipe, it includes protection pipe body, the fixed ring is set in the inside of protection pipe body, the four fixed pins of the fixed ring inside even sliding fixed connection are set, the cable fixed layer is fixedly connected and set in the elastic support band close to the side of protection pipe axis center. Through the above structure, the inside of protection pipe body even embedded fixed connection is provided with several reinforcing bars, so that the impact resistance of the protection pipe under normal state is enhanced, reduce its longitudinal fracture risk, the inside of protection pipe body is provided with fixed ring, the four fixed pins of the fixed ring inside even sliding fixed connection are set, the elastic support band is fixedly connected and set in the fixed pin close to the side of protection pipe axis center, the cable fixed layer is fixedly connected and set in the elastic support band close to the side of protection pipe axis center, so that the protection pipe places cable at protection pipe center, cable is not easy to break and fracture when being subjected to great external force.

Description

Technical Field

[0001] This utility model relates to the technical field of cable construction auxiliary devices, and in particular to a high-impact modified PVC cable protection pipe. Background Technology

[0002] PVC cable protection pipes are the core pipe material for protecting cables in the power and communication fields. With polyvinyl chloride (PVC) as the base material, they are widely used in underground pre-buried and outdoor installation scenarios due to their advantages such as light weight, corrosion resistance, low cost, smooth inner and outer walls for easy cable threading. Traditional PVC cable protection pipes are mostly made of rigid polyvinyl chloride (PVC-U), which has obvious performance shortcomings and poor structural stability, making it difficult to meet the long-term protection needs of cables under complex working conditions.

[0003] Its shortcomings are often reflected in the following aspects: poor toughness and weak impact resistance, making it prone to brittleness when subjected to external forces during storage, transportation, and construction. This problem is more prominent in low-temperature environments. Ordinary PVC has insufficient weather resistance and is prone to aging and cracking when exposed to outdoor ultraviolet radiation for a long time, resulting in a decline in mechanical properties and a shortened service life. After the cable is laid in the protective pipe, it is in direct contact with the bottom surface of the PVC protective pipe. If it is subjected to a strong impact from the external environment, the cable is prone to breakage. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a high-impact modified PVC cable protection pipe, which enhances the impact resistance of the protection pipe under normal conditions, reduces its longitudinal fracture risk, and places the cable in the center of the protection pipe, so that the cable is not easily damaged or broken when subjected to huge external forces.

[0005] This utility model also provides a high-impact modified PVC cable protection pipe, including a protection pipe body. Several reinforcing ribs are uniformly embedded and fixedly connected inside the inner side of the protection pipe body. A fixing ring is provided inside the protection pipe body. Four fixing pins are uniformly slidably and fixedly connected inside the fixing ring. An elastic support band is fixedly connected to the side of the fixing pins near the axis of the protection pipe. A cable fixing layer is fixedly connected to the side of the elastic support band near the axis of the protection pipe. The cable fixing layer is located on the innermost side of the protection pipe body.

[0006] According to the present invention, a high-impact modified PVC cable protection pipe is provided with four pin slots evenly recessed on the side of the fixing ring near the axis of the protection pipe, and the inner surface of the pin slots is fixedly connected to the outer surface of the fixing pin.

[0007] According to the present invention, a high-impact modified PVC cable protection pipe is provided with a second flame-retardant layer fixedly connected to the side of the protection pipe body near the axis of the protection pipe, and the inner surface of the second flame-retardant layer is fixedly connected to the outer surface of the fixing ring.

[0008] According to the present invention, a high-impact modified PVC cable protection pipe is provided on the outside of the fixing ring, and the inner surface of the insulation layer is fixedly connected to the outer surface of the protection pipe body.

[0009] According to the present invention, a high-impact modified PVC cable protection pipe is provided on one side of the pipe body, which is based on the principle of the pipe axis. The inner surface of the first flame-retardant layer is fixedly connected to the outer surface of the insulation layer.

[0010] According to the present invention, a high-impact modified PVC cable protection pipe is provided with an ultraviolet-resistant layer on the side of the pipe body away from the axis of the pipe. The inner surface of the ultraviolet-resistant layer is fixedly connected to the outer surface of the first flame-retardant layer. The ultraviolet-resistant layer is located on the outermost layer of the pipe body.

[0011] Beneficial effects:

[0012] 1. Several reinforcing ribs are evenly embedded and fixed inside the protective tube body, which enhances the impact resistance of the protective tube under normal conditions and reduces its risk of longitudinal breakage.

[0013] 2. A fixing ring is provided on the inner side of the protective tube body. Four fixing pins are evenly and slidably fixedly connected to the inner side of the fixing ring. An elastic support band is fixedly connected to the side of the fixing pins near the axis of the protective tube. A cable fixing layer is fixedly connected to the side of the elastic support band near the axis of the protective tube, so that the cable is placed in the center of the protective tube and the cable is not easily damaged or broken when subjected to huge external forces. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a perspective view of a high-impact modified PVC cable protection pipe according to the present invention;

[0016] Figure 2 This is a cross-sectional view of a high-impact modified PVC cable protection pipe according to the present invention;

[0017] Figure 3 This is a structural diagram of a high-impact modified PVC cable protection pipe fixing ring according to this utility model;

[0018] Figure 4 This is a structural diagram of a high-impact modified PVC cable protection pipe and cable fixing device according to the present invention;

[0019] Figure 5 This is an exploded view of a high-impact modified PVC cable protection pipe according to this utility model.

[0020] Legend:

[0021] 1. Protective tube body; 2. Reinforcing rib; 3. UV-resistant layer; 4. First flame-retardant layer; 5. Thermal insulation layer; 6. Second flame-retardant layer; 7. Fixing ring; 8. Pin groove; 9. Fixing pin; 10. Elastic support band; 11. Cable fixing layer. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-5 This utility model provides a high-impact modified PVC cable protection pipe, which includes a protection pipe body 1. Several reinforcing ribs 2 are uniformly embedded and fixedly connected to the inner side of the protection pipe body 1. A fixing ring 7 is provided on the inner side of the protection pipe body 1. Four fixing pins 9 are uniformly slidably fixedly connected to the inner side of the fixing ring 7. An elastic support band 10 is fixedly connected to the side of the fixing pins 9 near the axis of the protection pipe. A cable fixing layer 11 is fixedly connected to the side of the elastic support band 10 near the axis of the protection pipe. The cable fixing layer 11 is located on the innermost side of the protection pipe body 1.

[0024] Specifically, the protective pipe body 1 is made of PVC, which is high in strength and lightweight, generally 1 / 6 the weight of steel pipes and 1 / 10 the weight of cement pipes. It is easy to transport and install without the need for special equipment. It has good flexibility, shock resistance and resistance to uneven settlement, which is far superior to traditional cement pipes and asbestos pipes. The reinforcing ribs are embedded in the protective pipe body 1 in a mesh pattern. They are made of steel fiber and have the characteristics of high strength and good toughness. They can effectively enhance the impact resistance of the protective pipe. The elastic support band 10 is a rubber elastic band. The core components are mostly natural rubber or synthetic rubber (such as nitrile rubber and neoprene rubber). It is characterized by excellent elasticity and good flexibility. It can provide elastic shock absorption for the cables inside the cable fixing layer 11. Even if the protective pipe body 1 is subjected to external impact, the cables will remain normal due to the shock absorption effect of the elastic support band 10. The cable fixing layer 11 can be selected according to the cross-sectional area of ​​the fixed cables.

[0025] The fixing ring 7 has four evenly recessed pin slots 8 on the side near the axis of the protective tube, and the inner surface of the pin slots 8 is fixedly connected to the outer surface of the fixing pin 9.

[0026] Specifically, the retaining ring 7 is also made of PVC, while the retaining pin 9 is made of metal. The retaining pin 9 and the pin slot 8 are fixedly connected by a mechanical pin to simplify the production process and reduce production costs.

[0027] A second flame-retardant layer 6 is fixedly connected to the protective tube body 1 near the axis of the protective tube, and the inner surface of the second flame-retardant layer 6 is fixedly connected to the outer surface of the fixing ring 7.

[0028] Specifically, the second flame-retardant layer 6 is a halogen-free flame-retardant material, such as silane cross-linked polyolefin, intumescent graphite coating, and ceramicized silicone rubber. Its function is to prevent the cable from spontaneously combusting due to excessive load or short circuit, which could ignite the protective tube body 1 and cause a fire.

[0029] An insulation layer 5 is provided on the outside of the fixing ring 7, and the inner surface of the insulation layer 5 is fixedly connected to the outer surface of the protective tube body 1.

[0030] Specifically, the insulation layer 5 is made of polyurethane foam, which is used to ensure that the cable can still work normally under extremely low temperatures.

[0031] The protective tube body 1 is based on the principle that a first flame-retardant layer 4 is provided on one side of the axis of the protective tube, and the inner surface of the first flame-retardant layer 4 is fixedly connected to the outer surface of the insulation layer 5.

[0032] Specifically, the first flame-retardant layer 4 is made of the same material as the second flame-retardant layer. Its function is to protect the cable in the event of an external fire. Together with the function of the insulation layer 5, it enables the cable to continue to work normally when it is subjected to high temperatures.

[0033] A UV-resistant layer 3 is provided on the side of the protective tube body 1 away from the axis of the protective tube. The inner surface of the UV-resistant layer 3 is fixedly connected to the outer surface of the first flame-retardant layer 4. The UV-resistant layer 3 is located on the outermost layer of the protective tube body 1.

[0034] Specifically, the material of the UV protection layer 3 is polyvinyl chloride (PVC). By adding UV absorbers (such as benzotriazoles) and hindered amine light stabilizers (HALS), its core function is to resist UV aging and extend service life.

[0035] Working principle: During cable laying, the cable is first inserted into the cable fixing layer 11 of the corresponding specification, and then the fixing pin 9 is inserted into the pin groove 8 to achieve the integral fixing of the cable fixing layer 11 and the protective pipe body 1. Finally, the cable protective pipes operated in the same way are connected into a whole by socket connection.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-impact modified PVC cable protection pipe, comprising a protection pipe body (1), characterized in that: The inner side of the protective tube body (1) is uniformly embedded with several reinforcing ribs (2). The inner side of the protective tube body (1) is provided with a fixing ring (7). The inner side of the fixing ring (7) is uniformly slidably fixed with four fixing pins (9). The fixing pins (9) are fixedly connected with an elastic support band (10) on the side near the axis of the protective tube. The elastic support band (10) is fixedly connected with a cable fixing layer (11) on the side near the axis of the protective tube. The cable fixing layer (11) is located on the innermost side of the protective tube body (1).

2. The high-impact modified PVC cable protection pipe according to claim 1, characterized in that, The fixing ring (7) has four pin slots (8) evenly recessed on the side near the axis of the protective tube. The inner surface of the pin slots (8) is fixedly connected to the outer surface of the fixing pin (9).

3. The high-impact modified PVC cable protection pipe according to claim 1, characterized in that, The protective tube body (1) is fixedly connected to a second flame-retardant layer (6) near the axis of the protective tube, and the inner surface of the second flame-retardant layer (6) is fixedly connected to the outer surface of the fixing ring (7).

4. The high-impact modified PVC cable protection pipe according to claim 1, characterized in that, An insulation layer (5) is provided on the outside of the fixing ring (7), and the inner surface of the insulation layer (5) is fixedly connected to the outer surface of the protective tube body (1).

5. The high-impact modified PVC cable protection pipe according to claim 1, characterized in that, The protective tube body (1) has a first flame-retardant layer (4) on one side of the axis of the protective tube, and the inner surface of the first flame-retardant layer (4) is fixedly connected to the outer surface of the insulation layer (5).

6. The high-impact modified PVC cable protection pipe according to claim 1, characterized in that, The protective tube body (1) is provided with an anti-ultraviolet layer (3) on the side away from the axis of the protective tube. The inner surface of the anti-ultraviolet layer (3) is fixedly connected to the outer surface of the first flame retardant layer (4). The anti-ultraviolet layer (3) is located on the outermost layer of the protective tube body (1).

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