High-strength corrugated pipe for wire perforation

Abstract

The utility model discloses a high-strength corrugated pipe for wire perforation, belongs to the technical field of pipeline structures, and provides a high-strength corrugated pipe for wire perforation, which can effectively protect wires, and comprises an outer compression-resistant pipe and an inner tensile pipe, the main body part of the inner tensile pipe is a threading pipe body, the outer compression-resistant pipe wraps the threading pipe body, and the inner tensile pipe wraps the outer compression-resistant pipe. The outer side face of the outer compression-resistant pipe is provided with corrugations, and a steel wire penetrates through the side wall of the threading pipe body. By designing the inner and outer double-layer structure, the corrugated pipe has higher-strength compression resistance and tensile property, the performance reduction of the electric wire caused by external extrusion and pulling is reduced, and the working stability and safety of the electric wire are higher; the pipe wall of the compression-resistant pipe on the outermost layer of the corrugated pipe is thick, so that the compression-resistant corrugated pipe can effectively disperse compressive stress, is wear-resistant, is not easy to damage, can be used repeatedly, and is more durable; and the friction force between the inner pipe and the outer pipe is smaller, so that even if the pipe wall is thicker, the pipe can be very smoothly adapted to deformation when the pipe needs to be bent.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline structures, and in particular to a high-strength corrugated pipe for electric wire perforation. Background Art

[0002] Wires themselves have certain protective capabilities, but in actual use, the environment in which the wires are located may be more complicated. When wiring, it is inevitable to encounter wall bends or pass through holes in the wall. When the wire body is pulled, it is easy to be squeezed and scratched by the corners or edges of the wall, which damages the original protective layer of the wire and reduces the stability and safety of the wire during operation. Although the existing corrugated tubes that can be put on the outside of the wires can replace the wires in direct contact with the outside world, the protection provided by the single-layer thin tube wall is very limited. The corrugated tube itself is easily damaged and has low durability. Summary of the Invention

[0003] The object of the present application is to provide a high-strength corrugated tube for perforation that can effectively protect electric wires.

[0004] To achieve the above objectives, the present application provides a high-strength corrugated tube for wire penetration: it includes an outer pressure-resistant tube and an inner tensile-resistant tube, the main part of the inner tensile-resistant tube is a wire threading tube body, the outer pressure-resistant tube is wrapped outside the wire threading tube body, the outer side surface of the outer pressure-resistant tube has corrugations, and steel wire is passed through the side wall of the wire threading tube body, which effectively improves the tensile deformation resistance of the corrugated tube.

[0005] As a preference, both ends of the threading tube body have blocking rings located outside the outer pressure-resistant tube, and the outer diameter of the blocking ring is larger than the inner diameter of the outer pressure-resistant tube, thereby limiting the relative position of the end of the outer pressure-resistant tube and the end of the inner tensile-resistant tube.

[0006] As a preference, the outer diameter of the blocking ring is equal to the maximum outer diameter of the outer pressure-resistant tube, the two ends of the outer pressure-resistant tube are fixedly connected to the blocking ring, the two ends of the outer pressure-resistant tube and the inner tensile tube are relatively fixed, and the part between the two ends slides relatively.

[0007] As a preference, the end face of the blocking ring facing away from the external pressure-resistant tube further comprises a pipe connecting end, and the end face of the pipe connecting end is provided with an engaging ring groove for cooperating with the end of a hard tube that also protects the wires.

[0008] As a preference, the outer diameter of the pipe connecting end is larger than the maximum outer diameter of the external pressure-resistant tube, so that both ends of the entire corrugated tube form a funnel shape for easy insertion.

[0009] As a preferred embodiment, there are a plurality of steel wires, and the plurality of steel wires are equidistantly arranged around the axis of the threading tube body, so that the material distribution in various parts of the threading tube body is relatively uniform.

[0010] As a preference, each of the steel wires is formed by twisting together thinner alloy steel fibers, so as to be able to more fully contact the side wall material of the threading tube body.

[0011] As a preferred embodiment, a lubricant is coated between the outer surface of the threading tube body and the inner wall of the external pressure-resistant tube to reduce the contact friction between the threading tube body and the external pressure-resistant tube. When the corrugated tube is bent, the inner and outer double-layer tubes can deform more smoothly, thereby releasing stress and reducing bending resistance.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] (1) By designing an inner and outer double-layer structure, the corrugated tube has higher compressive and tensile strength, reducing the performance degradation of the wire due to external extrusion and pulling, making the working stability and safety of the wire higher;

[0014] (2) The outermost pressure-resistant tube wall of the corrugated tube is relatively thick, which can effectively disperse the compressive stress while being very wear-resistant and not easily damaged. It can be used repeatedly and is more durable. The friction between the inner and outer tubes is relatively small. Even if the tube wall is relatively thick, it can adapt to deformation very smoothly when it needs to bend. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the high-strength corrugated tube for wire perforation.

[0016] Figure 2 This is a three-dimensional cross-sectional view of the overall structure of the high-strength corrugated tube for wire perforation.

[0017] Figure 3 High strength corrugated tube for wire perforation Figure 2 A partial enlarged view of point A.

[0018] Figure 4 This is a three-dimensional structural cross-sectional view of the main part of the high-strength corrugated tube for wire perforation.

[0019] Figure 5 High strength corrugated tube for wire perforation Figure 4 A partial enlarged view of point B.

[0020] In the figure: 1. External pressure-resistant tube; 2. Internal tensile-resistant tube; 201. Threading tube body; 202. Blocking ring; 203. Pipe connection end; 204. Joint ring groove; 3. Steel wire. DETAILED DESCRIPTION

[0021] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0024] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to such process, method, product or apparatus.

[0025] like Figure 1-5 The high-strength corrugated tube for wire perforation shown in the figure comprises a double-layer structure of an outer pressure-resistant tube 1 and an inner tensile-resistant tube 2. The main part of the inner tensile-resistant tube 2 is a threading tube body 201 made of rubber material. The inner and outer walls of the threading tube body 201 are smooth. The outer pressure-resistant tube 1 is wrapped around the threading tube body 201. The inner diameter of the outer pressure-resistant tube 1 is equal to the outer diameter of the threading tube body 201. Since the outer pressure-resistant tube 1 is also made of rubber material, the inner tensile-resistant tube 2 and the outer pressure-resistant tube 1 are separated and matched by wearing a sleeve. In order to reduce The friction during the threading process usually requires a lubricant to be applied between the outer surface of the threading tube body 201 and the inner wall of the outer pressure-resistant tube 1, such as common low-viscosity engine oil. After the threading is completed, the threading tube body 201 can also slide relative to the outer pressure-resistant tube 1, so that when bending, the deformation resistance of the outer pressure-resistant tube 1 and the threading tube body 201 is smaller, and the bending of the corrugated tube is smoother. The outer side surface of the outer pressure-resistant tube 1 has corrugations, which can effectively absorb deformation when bending, thereby reducing the compressive stress and tensile stress of the tube wall.

[0026] Both ends of the threading tube body 201 have blocking rings 202 located outside the outer pressure-resistant tube 1. The diameter of the blocking ring 202 is larger, so the outer diameter of the blocking ring 202 will be larger than the inner diameter of the outer pressure-resistant tube 1. Under normal circumstances, the outer diameter of the blocking ring 202 will be equal to the maximum outer diameter of the outer pressure-resistant tube 1, and then the two ends of the outer pressure-resistant tube 1 are fixedly connected to the blocking ring 202 by secondary hot melting. The end face of the blocking ring 202 facing away from the outer pressure-resistant tube 1 also has a pipe connecting end 203, which is usually used to connect with the cable tube leaking from the wall. The end face of the pipe connecting end 203 is provided with a coupling ring groove 204, which allows the pipe connecting end 203 to be sleeved on the end of the wall cable tube. The outer diameter of the pipe connecting end 203 is larger than the maximum outer diameter of the outer pressure-resistant tube 1, and the inner diameter of the coupling ring groove 204 is also larger than the inner diameter of the threading tube body 201. In this way, a funnel-shaped structure is formed at both ends of the corrugated tube, which is convenient for the wires to pass through the end of the corrugated tube.

[0027] A steel wire 3 is passed through the side wall of the threading tube body 201. In the process of forming the threading tube body 201, the flowing raw material will gradually wrap the steel wire 3. After the raw material solidifies, it can generate strong contact friction with the steel wire 3. There are several steel wires 3, and these steel wires 3 are arranged equidistantly around the axis of the threading tube body 201, so that the material distribution in the circumferential direction of the corrugated tube is as uniform as possible. Each steel wire 3 is twisted together by a root of thinner alloy steel fibers. Compared with coating a corrosion-resistant layer on the outside of a single steel wire 3, coating a plurality of thinner fiber filaments with an anti-corrosion layer will make the twisted steel wire 3 have stronger corrosion resistance. Moreover, the thick steel wire 3 twisted with thinner alloy steel fibers has obvious surface grooves that can make more sufficient contact with the rubber material of the threading tube body 201, so that the steel wire 3 can withstand most of the tensile force applied to the threading tube body 201, while avoiding excessive stretching of the rubber threading tube body 201.

[0028] Working principle: the outer pressure-resistant tube 1 and the inner tensile tube 2 are formed independently of each other. When the inner tensile tube 2 is formed, the steel wire 3 is integrated into the side wall of the threading tube body 201; when assembling, one end of the inner tensile tube 2 is squeezed and shrunk and inserted into the outer pressure-resistant tube 1, and lubricant is applied to the outside of the threading tube body 201. Then, a traction tool is used to pull out the end of the inner tensile tube 2 located at the outer pressure-resistant tube 1 until the blocking ring 202 located outside the outer pressure-resistant tube 1 presses against the end face of the outer pressure-resistant tube 1. Finally, the two ends of the outer pressure-resistant tube 1 are respectively hot-melted and cooled and solidified together with the two blocking rings 202. The entire corrugated tube is completed. When in use, the threaded tube 2 is pulled out. The wires of the wall hard pipe pass through one end of the corrugated pipe and are led out from the other end. The end of the corrugated pipe close to the wall hard pipe is put on the exposed end of the wall hard pipe through the pipe connecting end 203, and can be fixed with curing glue. When the wires need to turn, the corrugated pipe can absorb the bending stress very well and protect the internal wires from external scratches. When the corrugated pipe is under pressure, the outer pressure-resistant tube 1 with good elasticity can disperse the pressure very well, reducing the probability of the wires inside the corrugated pipe being flattened and narrowed; when the corrugated pipe is subjected to pulling, the steel wire 3 can absorb the tensile stress very well, thereby avoiding the probability of the cable inside the corrugated pipe being pulled and thinned.

[0029] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A high-strength corrugated tube for electric wire perforation, characterized in that: The invention comprises an outer pressure-resistant tube (1) and an inner tensile-resistant tube (2), wherein the main body of the inner tensile-resistant tube (2) is a threading tube body (201), the outer pressure-resistant tube (1) is wrapped around the threading tube body (201), the outer side surface of the outer pressure-resistant tube (1) has corrugations, and a steel wire (3) is passed through the side wall of the threading tube body (201).

2. The high-strength corrugated tube for electric wire perforation according to claim 1, characterized in that: Both ends of the threading tube body (201) are provided with blocking rings (202) located outside the outer pressure-resistant tube (1); the outer diameter of the blocking ring (202) is greater than the inner diameter of the outer pressure-resistant tube (1).

3. The high-strength corrugated tube for electric wire perforation according to claim 2, characterized in that: The outer diameter of the blocking ring (202) is equal to the maximum outer diameter of the external pressure-resistant tube (1), and both ends of the external pressure-resistant tube (1) are fixedly connected to the blocking ring (202).

4. The high-strength corrugated tube for electric wire perforation according to claim 3, characterized in that: The end surface of the blocking ring (202) facing away from the external pressure-resistant tube (1) further comprises a pipe connection end (203), and the end surface of the pipe connection end (203) is provided with a joint ring groove (204).

5. The high-strength corrugated tube for electric wire perforation according to claim 4, characterized in that: The outer diameter of the pipe connection end (203) is greater than the maximum outer diameter of the external pressure-resistant pipe (1).

6. The high-strength corrugated tube for electric wire perforation according to any one of claims 1 to 5, characterized in that: There are a plurality of steel wires (3), and the plurality of steel wires (3) are arranged at equal distances around the axis of the threading tube body (201).

7. The high-strength corrugated tube for electric wire perforation according to claim 6, characterized in that: Each of the steel wires (3) is formed by twisting together thinner alloy steel fibers.

8. The high-strength corrugated tube for electric wire perforation according to claim 1, characterized in that: A lubricant is coated between the outer surface of the threading tube body (201) and the inner wall of the external pressure-resistant tube (1).

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