Impact-resistant polyvinyl chloride composite sheath pipe with novel structural wall
By setting buffer blocks and extension tubes on the inner wall of the sheath tube, combined with stainless steel support rings, the problem of easy damage to the sheath tube under external impact is solved, thereby improving its impact resistance and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-28
AI Technical Summary
Existing sheaths are easily damaged when subjected to external impacts, resulting in a shortened service life.
The system employs an impact-resistant PVC composite sheath with a novel structural wall. A flange is bonded to the inner wall of the sheath, and a buffer block and an extension tube are fixedly mounted on the outer circumference. The buffer block and extension tube are made of rubber and combined with a stainless steel support ring to enhance the structural strength.
It improves the impact resistance of the sheath, extends its service life, ensures effective protection of the cable, and enhances structural stability and reliability.
Smart Images

Figure CN224177859U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sheathing technology, and in particular to an impact-resistant polyvinyl chloride composite sheathing with a novel structural wall. Background Technology
[0002] Cable sheaths are important devices for protecting cables. They have excellent insulation properties, effectively preventing leakage, strong corrosion resistance, and can withstand various chemical attacks. They also have high mechanical strength, allowing them to withstand heavy pressure and tension. They are widely used in construction, power, and communication fields. For example, in the laying of underground cables in cities, they are used to prevent cable damage, ensure stable power and communication transmission, extend the service life of cables, and improve the safety of line operation.
[0003] The above-mentioned and existing technologies have the following drawbacks: When using sheathing tubes, the cable is directly passed through the sheathing tube. When the sheathing tube is subjected to external impact, it is easily damaged due to the direct force on the sheathing tube, thus shortening the service life of the sheathing tube.
[0004] Therefore, an impact-resistant polyvinyl chloride composite sheath with a novel structural wall is proposed. Utility Model Content
[0005] The purpose of this invention is to address the problem that the sheath is easily damaged when subjected to external impacts due to direct force on the sheath. This invention proposes a novel impact-resistant polyvinyl chloride composite sheath with a novel structural wall.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an impact-resistant polyvinyl chloride composite sheath tube with a novel structural wall, comprising a sheath tube body, a flange tube bonded to the inner wall of the sheath tube body, and a plurality of buffer blocks fixedly assembled on the outer circumferential surface of the sheath tube body, the buffer blocks being rubber blocks, and an extension tube fixedly assembled on the surface of the buffer blocks, wherein both the sheath tube body and the extension tube are made of polyvinyl chloride.
[0007] The effects achieved by the above components are as follows: by setting up extension tubes and buffer blocks, the extension tubes can increase the protective area of the buffer blocks. When an external impact occurs, the extension tubes are subjected to force first, and then the impact force is transmitted to the buffer blocks. The rubber buffer blocks will deform to buffer the impact, thereby improving the impact resistance of the sheath tube body, extending the service life of the sheath tube body, and ensuring the protection effect on the cable.
[0008] Preferably, a support ring is embedded in the inner wall of the sheath tube body, and the support ring is a stainless steel ring.
[0009] The effect achieved by the above components is as follows: by utilizing the high strength and rigidity of stainless steel, the structural strength and rigidity of the sheath tube body can be effectively enhanced, preventing the sheath tube body from deforming when subjected to external pressure or impact, ensuring the stability of the internal space of the sheath tube body, and thus better protecting the internal cables.
[0010] Preferably, a plurality of protrusions are fixedly assembled on the outer circumferential surface of the support ring, and the protrusions are fixedly connected to the sheath tube body.
[0011] The effect achieved by the above components is that the protrusions can increase the connection strength and stability between the support ring and the sheath body, allowing the support ring to better perform its supporting function and preventing the support ring from shifting or rotating within the sheath body.
[0012] Preferably, the extension tube has an indicator groove relative to the position of the support ring.
[0013] The effect achieved by the above components is that when it is necessary to cut the sheath tube body, the indicator groove can help the workers avoid the buffer block and support ring, thus facilitating the cutting operation.
[0014] Preferably, a plurality of elastic strips are fixedly assembled on the outer circumferential surface of the extension tube. The elastic strips are rubber strips and have a spiral structure.
[0015] The effect achieved by the above components is that the elastic strip made of rubber can further improve the impact resistance of the extension tube.
[0016] Preferably, a diaphragm is fixedly assembled on the outer circumferential surface of the sheath tube body, and the diaphragm is fixedly connected to the extension tube.
[0017] The effect achieved by the above components is that the diaphragm can prevent external moisture, dust, corrosive substances, etc. from entering the gap between the sheath tube body and the extension tube to a certain extent, thereby protecting the internal structure and performance of the sheath tube body.
[0018] Preferably, a plurality of reinforcing wires are inserted through the inner wall of the sheath tube body.
[0019] The effect achieved by the above components is that the reinforcing wire can further enhance the strength and toughness of the sheath body. Especially when the sheath is stretched or bent, the reinforcing wire can provide additional support and tension to prevent the sheath body from cracking or being damaged, thereby improving the reliability and durability of the sheath body.
[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0021] In this invention, by setting an extension tube and a buffer block, the extension tube can increase the protective area of the buffer block. When an external impact occurs, the extension tube is subjected to force first, and then the impact force is transmitted to the buffer block. The rubber buffer block will deform to buffer the impact, thereby improving the impact resistance of the sheath tube body, extending the service life of the sheath tube body, and ensuring the protection effect on the cable. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the disassembled structure of the sheath tube body of this utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the support ring of this utility model;
[0025] Figure 4 This is a cross-sectional structural diagram of the sheath tube body of this utility model;
[0026] Figure 5 This is a partial cross-sectional structural diagram of the sheath tube body of this utility model.
[0027] Legend: 1. Sheath tube body; 2. Flange tube; 3. Buffer block; 4. Extension tube; 5. Support ring; 6. Protrusion; 7. Indicator groove; 8. Elastic strip; 9. Diaphragm; 10. Reinforcing wire. Detailed Implementation
[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0030] like Figures 1-5As shown, this utility model provides an impact-resistant PVC composite sheath with a novel structural wall, including a sheath body 1, a flange 2 bonded to the inner wall of the sheath body 1, and several buffer blocks 3 fixedly mounted on the outer circumference of the sheath body 1. The buffer blocks 3 are rubber blocks, and extension tubes 4 are fixedly mounted on the surfaces of the buffer blocks 3. Both the sheath body 1 and the extension tubes 4 are made of PVC. By setting the extension tubes 4 and the buffer blocks 3, the extension tubes 4 can increase the protective area of the buffer blocks 3. When an external impact occurs, the extension tubes 4 are subjected to force first, and then the impact force is transmitted to the buffer blocks 3. The rubber buffer blocks 3 will deform to buffer the impact, thereby improving the impact resistance of the sheath body 1. To extend the service life of the sheath tube body 1, a support ring 5 is embedded in the inner wall of the sheath tube body 1. The support ring 5 is a stainless steel ring. With the high strength and rigidity of stainless steel, the structural strength and rigidity of the sheath tube body 1 can be effectively enhanced, preventing the sheath tube body 1 from deforming when subjected to external pressure or impact, ensuring the stability of the internal space of the sheath tube body 1, and thus better protecting the internal cables. Several protrusions 6 are fixedly installed on the outer circumference of the support ring 5. The protrusions 6 are fixedly connected to the sheath tube body 1. The setting of the protrusions 6 can increase the connection strength and stability between the support ring 5 and the sheath tube body 1, so that the support ring 5 can better play its supporting role and prevent the support ring 5 from being displaced or rotated within the sheath tube body 1.
[0031] An indicator groove 7 is provided at the position of the extension tube 4 relative to the support ring 5. When the sheath tube body 1 needs to be cut, the indicator groove 7 can help the workers avoid the buffer block 3 and the support ring 5, thus facilitating the cutting operation. Several elastic strips 8 are fixedly installed on the outer circumference of the extension tube 4. The elastic strips 8 are rubber strips with a spiral structure. The rubber elastic strips 8 can further improve the impact resistance of the extension tube 4. A diaphragm 9 is fixedly installed on the outer circumference of the sheath tube body 1. The diaphragm 9 is fixedly connected to the extension tube 4. The diaphragm 9 can prevent external moisture, dust, corrosive substances, etc. from entering the gap between the sheath tube body 1 and the extension tube 4 to a certain extent, thereby protecting the internal structure and performance of the sheath tube body 1. Several reinforcing wires 10 are passed through the inner wall of the sheath tube body 1. The reinforcing wires 10 can further enhance the strength and toughness of the sheath tube body 1. Especially when the sheath tube is stretched or bent, the reinforcing wires 10 can provide additional support and tension to prevent the sheath tube body 1 from cracking or being damaged, thereby improving the reliability and durability of the sheath tube body 1.
[0032] The overall working principle is as follows: the flange 2 facilitates the connection between the sheath body 1 and the external pipeline, and the position of the flange 2 inserted into the sheath body 1 can be finely adjusted as needed. The extension pipe 4 increases the protective area of the buffer block 3. When an external impact occurs, the extension pipe 4 is subjected to force first, and then the impact force is transmitted to the buffer block 3. The rubber buffer block 3 will deform to buffer the impact, thereby improving the impact resistance of the sheath body 1, extending the service life of the sheath body 1, and ensuring the protection effect on the cable. The stainless steel ring is used as the support ring 5. With the high strength and rigidity of stainless steel, the structural strength and rigidity of the sheath body 1 can be effectively enhanced, preventing the sheath body 1 from deforming when subjected to external pressure or impact, ensuring the stability of the internal space of the sheath body 1, and thus better protecting the internal cable. The setting of the protrusion 6 can increase the support. The connection strength and stability between the support ring 5 and the sheath tube body 1 enable the support ring 5 to better perform its supporting function and prevent the support ring 5 from shifting or rotating within the sheath tube body 1. When the sheath tube body 1 needs to be cut, the indicator groove 7 allows workers to easily avoid the buffer block 3 and the support ring 5, thus facilitating the cutting operation. The diaphragm 9 can, to a certain extent, prevent external moisture, dust, corrosive substances, etc., from entering the gap between the sheath tube body 1 and the extension tube 4, thereby protecting the internal structure and performance of the sheath tube body 1. The reinforcing wire 10 can further enhance the strength and toughness of the sheath tube body 1. Especially when the sheath tube is stretched or bent, the reinforcing wire 10 can provide additional support and tension to prevent the sheath tube body 1 from cracking or being damaged, thereby improving the reliability and durability of the sheath tube body 1. The elastic strip 8 made of rubber can further improve the impact resistance of the extension tube 4.
[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An impact-resistant polyvinyl chloride composite sheath pipe with a novel structural wall, characterized in that: The device includes a sheath tube body (1), the inner wall of which is bonded with a flange tube (2), and a number of buffer blocks (3) are fixedly assembled on the outer circumference of the sheath tube body (1). The buffer blocks (3) are rubber blocks, and an extension tube (4) is fixedly assembled on the surface of the buffer blocks (3). Both the sheath tube body (1) and the extension tube (4) are made of polyvinyl chloride.
2. The impact-resistant PVC composite sheath pipe with a novel structural wall as described in claim 1, characterized in that: The inner wall of the sheath tube body (1) is fitted with a support ring (5), which is a stainless steel ring.
3. The impact-resistant PVC composite sheath pipe with a novel structural wall as described in claim 2, characterized in that: The outer circumferential surface of the support ring (5) is fixedly fitted with several protrusions (6), and the protrusions (6) are fixedly connected to the sheath tube body (1).
4. The impact-resistant PVC composite sheath pipe with a novel structural wall as described in claim 2, characterized in that: The extension tube (4) has an indicator groove (7) at its position relative to the support ring (5).
5. The impact-resistant polyvinyl chloride composite sheath pipe with a novel structural wall as described in claim 1, characterized in that: The outer circumferential surface of the extension tube (4) is fixedly equipped with several elastic strips (8), which are rubber strips and have a spiral structure.
6. The impact-resistant polyvinyl chloride composite sheath pipe with a novel structural wall as described in claim 1, characterized in that: A diaphragm (9) is fixedly assembled on the outer circumferential surface of the sheath tube body (1), and the diaphragm (9) is fixedly connected to the extension tube (4).
7. The impact-resistant PVC composite sheath pipe with a novel structural wall as described in claim 1, characterized in that: The inner wall of the sheath tube body (1) is provided with several reinforcing wires (10).