Splicing and rotating cable protection pipeline

Abstract

The utility model discloses a cable protection pipeline capable of being spliced and rotated. The cable protection pipeline comprises a plurality of main body pipelines and connecting pipelines, the main body pipeline comprises an outer pipe and an inner pipe located in the outer pipe. The connecting pipeline comprises a corrugated pipe and a connecting pipe located in the corrugated pipe, the two ends of the connecting pipe extend out of the corrugated pipe and are detachably connected with the adjacent inner pipes, and axial notches used for disassembling and assembling cables are formed in the side walls of the outer pipe, the inner pipes, the corrugated pipe and the connecting pipe in a penetrating mode. When the cable is overhauled, disassembled and assembled, only the axial gap needs to be opened through local rotation, the whole section of pipeline does not need to be disassembled, and the maintenance pressure of railway skylight time is remarkably reduced; after maintenance or disassembly and assembly are finished, the axial notch can be sealed only by reversely rotating the outer pipe and the corrugated pipe, and meanwhile, the connecting pipe is reversely rotated and locked with the inner pipe, so that the operation time can be greatly shortened, and meanwhile, gravel and rainwater can be effectively prevented from invading.

Description

Technical Field

[0001] This utility model relates to the field of railway cable protection technology, specifically to a cable protection pipe that can be spliced ​​and rotated. Background Technology

[0002] Railway track monitoring systems are crucial infrastructure for ensuring safe train operation, relying on cables for real-time signal transmission. However, the railway environment is highly complex. Cables are exposed to harsh conditions such as high-frequency vibrations from train operation, rain and snow erosion, gravel impacts, and material fatigue caused by diurnal temperature variations, significantly increasing the risk of insulation aging, damage, and even breakage. Traditional cable protection conduits often employ a single-layer fixed structure, primarily using rigid PVC or polyethylene. While providing basic protection, this design has several limitations in practical applications. For example, precise alignment of interfaces is required during installation, which is extremely inconvenient, especially in curved or narrow track areas. Maintenance requires disassembling the entire conduit, which is time-consuming and labor-intensive, failing to meet the stringent requirements for efficient operation during railway maintenance windows. Furthermore, single-layer conduits have limited impact resistance; gravel impacts can easily cause structural cracking, and waterproofing designs relying on external tape or sealant are prone to failure under long-term vibration, leading to rainwater infiltration and short circuits.

[0003] To address the issue of insufficient terrain adaptability, some improvement schemes have attempted to introduce corrugated pipe designs to enhance flexibility. However, these connections are only secured with clips, making them prone to loosening under long-term vibration, and sealing performance is difficult to guarantee. Other studies have employed split-type cover designs to simplify line maintenance, but these covers are easily lost and do not provide a tight seal, failing to balance rapid operation with complete enclosed protection. In recent years, while the application of composite material technology has improved pipe strength to some extent, and modular interface designs have simplified installation processes, these solutions still have significant shortcomings. For example, high-protection pipes often rely on expensive materials such as carbon fiber reinforced plastics, resulting in high costs that cannot meet the economic requirements of large-scale railway system installations. Furthermore, existing technologies are prone to interface cracking due to stress concentration in high-frequency vibration environments, exhibiting insufficient dynamic stability. Current technologies have failed to effectively balance the contradiction between rapid sealing and high sealing performance. Line maintenance often requires complete pipe disassembly or reliance on fragile temporary covers, impacting maintenance efficiency and making it difficult to ensure long-term protective effects. Utility Model Content

[0004] The purpose of this invention is to provide a cable protection conduit that can be spliced ​​and rotated to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A rotatable cable protection conduit includes: several main conduits and connecting conduits that can be detachably connected between adjacent main conduits;

[0007] The main conduit includes an outer pipe and an inner pipe located inside the outer pipe; the connecting conduit includes a corrugated pipe and a connecting pipe located inside the corrugated pipe. Both ends of the connecting pipe extend from inside the corrugated pipe and are detachably connected to the adjacent inner pipe. The side walls of the outer pipe, inner pipe, corrugated pipe and connecting pipe are all provided with axial notches for assembling and disassembling cables.

[0008] When the axial notch on the outer tube and the axial notch on the inner tube are completely intersected, the outer tube and the inner tube are locked; when the axial notch on the bellows and the axial notch on the connecting tube are completely intersected, the bellows and the connecting tube are locked.

[0009] Furthermore, the outer walls of the inner tube and the connecting tube are respectively provided with elastic locking blocks, and the inner walls of the outer tube and the inner walls of the corrugated tube are respectively provided with locking grooves that engage with the elastic locking blocks.

[0010] Furthermore, the inner wall of the outer tube and the inner wall of the corrugated tube are respectively provided with annular grooves for limiting the axial displacement of the elastic locking block. The locking groove is opened on the bottom wall of the annular groove, and the elastic locking block extends into the annular groove and engages with the locking groove.

[0011] Furthermore, at least one of the aforementioned elastic card blocks is provided, and the card slots correspond one-to-one with the elastic card blocks.

[0012] Furthermore, the thickness of the corrugated pipe is greater than the thickness of the inner pipe.

[0013] Furthermore, a magnet is embedded in the outer wall of the end of the inner tube, and a magnetic block that attracts the magnet is embedded in the outer wall of the end of the corrugated tube.

[0014] Furthermore, at least one of the aforementioned magnets is provided, and the magnetic blocks correspond one-to-one with the magnets.

[0015] Furthermore, the length of the outer tube is equal to the length of the inner tube.

[0016] Furthermore, the axial notch on the outer tube and its central axis, the axial notch on the inner tube and its central axis, the axial notch on the bellows and its central axis, and the axial notch on the connecting tube and its central axis all have included angles, ranging from 30° to 90°.

[0017] Furthermore, the aforementioned connecting pipe includes an elastic tube located inside the bellows and a rigid tube extending to the outside of the end of the bellows, with the inner tube and the rigid tube being threadedly connected.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model relates to a rotatable cable protection conduit. It consists of a main conduit and connecting conduits, with the connecting conduits linking adjacent main conduits. The main conduit includes an outer pipe and an inner pipe, while the connecting conduits include a corrugated pipe and a connecting pipe. When cable maintenance or replacement is required, the outer pipe is rotated so that its axial notch aligns with the axial notch on the inner pipe. The corrugated pipe is then rotated so that its axial notch aligns with the axial notch on the connecting pipe. Simultaneously, the connecting pipe is rotated, and the position of its axial notch is adjusted to correspond with the axial notch on the main conduit. At this point, the cable can be disassembled and maintained through the axial notches on the main conduit and connecting conduits. Therefore, cable maintenance and disassembly only require partial rotation to open the axial notch, eliminating the need to disassemble the entire conduit, significantly reducing maintenance pressure during railway maintenance windows. After maintenance or disassembly, simply reverse the rotation of the outer pipe and corrugated pipe to close the axial notch, and simultaneously reverse the rotation of the connecting pipe to lock it with the inner pipe. This greatly shortens operation time and effectively prevents the intrusion of gravel and rainwater.

[0020] 2. The cable protection pipe of this utility model that can be spliced ​​and rotated, the corrugated pipe and the connecting pipe inside the corrugated pipe can be bent, can adapt to the undulation and curved terrain of the track, can absorb vibration energy, and can adapt to the complex terrain and high frequency vibration environment of the track.

[0021] 3. The rotatable cable protection conduit of this utility model has elastic locking blocks on the outer wall of the inner tube and the outer wall of the connecting tube. When the outer tube and the corrugated tube are rotated and the axial notches on the outer tube and the inner tube are completely intersected, and the axial notches on the corrugated tube and the connecting tube are completely intersected, the elastic locking blocks can be locked into the slots, and the outer tube and the inner tube and the corrugated tube and the connecting tube are locked. This can prevent the outer tube and the corrugated tube from rotating accidentally and prevent the notches from being misaligned due to accidental rotation.

[0022] 4. The rotatable cable protection pipe of this utility model can effectively prevent loosening at the connection by setting magnets and magnetic blocks, and the two ends of the connecting pipe can be detachably connected to the inner pipe. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the main pipeline;

[0024] Figure 2 This is a schematic diagram of the connecting pipe structure;

[0025] Figure 3 This is a side view of the structure after the main pipeline and connecting pipelines are connected.

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the outer tube.

[0027] In the diagram: 1. Main pipe; 11. Outer pipe; 12. Inner pipe; 121. Magnet; 2. Connecting pipe; 21. Corrugated pipe; 211. Magnetic block; 22. Connecting pipe; 3. Axial notch; 4. Elastic locking block. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] like Figures 1 to 4 As shown, an embodiment of this utility model provides a cable protection conduit that can be spliced ​​and rotated, including: a plurality of main conduits 1, and connecting conduits 2 that can be detachably connected between adjacent main conduits 1;

[0030] The main pipe 1 includes an outer pipe 11 and an inner pipe 12 located inside the outer pipe 11. The inner diameter of the outer pipe 11 matches the outer diameter of the inner pipe 12, and both the outer pipe 11 and the inner pipe 12 are circular pipes made of rigid plastic. In this embodiment, the length of the outer pipe 11 is equal to the length of the inner pipe 12. The connecting pipe 2 includes a corrugated pipe 21 and a connecting pipe 22 located inside the corrugated pipe 21. Both ends of the connecting pipe 22 extend from the corrugated pipe 21 and are detachably connected to the adjacent inner pipe 12. The thickness of the corrugated pipe 21 is greater than the thickness of the inner pipe 12. Specifically, the corrugated pipe 21 includes an outer corrugated portion and an elastic portion located on the inner wall of the outer corrugated portion. The elastic portion is made of a material with a certain elasticity and hardness, and the elastic portion facilitates its fit with the connecting pipe 22. The inner diameter of the elastic portion on the corrugated pipe 21 matches the outer diameter of the connecting pipe 22, and both the corrugated pipe 21 and the connecting pipe 22 have circular cross-sections. The connecting pipe 22 includes... The flexible tube located inside the corrugated pipe 21 and the rigid tube extending to the outer side of the end of the corrugated pipe 21 are both included. The flexible tube is made of a material with a certain degree of elasticity and hardness, and it can undergo elastic deformation along with the corrugated pipe 21 to accommodate pipe installations at different locations, especially corners. The flexible tube can be made of EPDM rubber, which has a certain degree of hardness and can undergo elastic deformation to adapt to different installation requirements. The inner tube 12 is threaded to the rigid tube. The outer wall of the rigid tube has external threads, and the inner wall of the end of the inner tube 12 has internal threads that match the external threads on the outer wall of the rigid tube. The threaded connection facilitates the disassembly and installation of the inner tube 12 and the connecting pipe 22. In other embodiments of this utility model, the end of the connecting pipe 22 can be provided with a groove, and the end of the inner tube 12 can be provided with a locking block that matches the groove, achieving a detachable connection through locking.

[0031] The outer tube 11, inner tube 12, corrugated tube 21, and connecting tube 22 all have axial notches 3 through their side walls for cable installation and removal. When the axial notches 3 on the outer tube 11 and the inner tube 12 are completely intersected, the outer tube 11 and the inner tube 12 are locked. When the axial notches 3 on the corrugated tube 21 and the connecting tube 22 are completely intersected, the corrugated tube 21 and the connecting tube 22 are locked. The axial notches 3 on the outer tube 11 are equal in length to the outer tube 11, the axial notches 3 on the inner tube 12 are equal in length to the inner tube 12, the axial notches 3 on the corrugated tube 21 are equal in length to the corrugated tube 21, and the axial notches 3 on the connecting tube 22 are equal in length to the connecting tube 22.

[0032] In order to ensure the sealing between the outer tube 11 and the inner tube 12, and between the bellows 21 and the connecting tube 22, two sealing strips of the same length as the inner tube 12 can be provided axially on the inner wall of the outer tube 11. The two sealing strips are located on both sides of the axial notch 3 on the outer tube 11. Similarly, two sealing strips of the same length as the bellows 21 can be provided axially on the inner wall of the bellows 21. The two sealing strips are located on both sides of the axial notch 3 on the bellows 21.

[0033] like Figure 1 and Figure 2 As shown, the outer walls of the inner tube 12 and the connecting tube 22 are respectively provided with elastic locking blocks 4. The inner walls of the outer tube 11 and the inner walls of the corrugated tube 21 are respectively provided with locking grooves that engage with the elastic locking blocks 4. The locking grooves on the outer tube 11 are located in the inner wall of the region where the axial notch 3 of the outer tube 11 and the axial notch 3 of the inner tube 12 completely intersect. The locking grooves on the corrugated tube 21 are located in the inner wall of the region where the axial notch 3 of the corrugated tube 21 and the axial notch 3 of the connecting tube 22 completely intersect. In this embodiment, at least one elastic locking block 4 is provided, and the locking grooves correspond one-to-one with the elastic locking blocks 4. Specifically, two, three, etc., can be provided, depending on the actual use.

[0034] Preferably, such as Figure 4 As shown, the inner walls of the outer tube 11 and the inner walls of the corrugated tube 21 are respectively provided with annular grooves for limiting the axial displacement of the elastic locking block 4. The locking groove is opened on the bottom wall of the annular groove, and the elastic locking block 4 extends into the annular groove and engages with the locking groove. With this configuration, when the outer tube 11 or the corrugated tube 21 is rotated, there will be no axial displacement between the outer tube 11 and the inner tube 12, and there will be no axial displacement between the corrugated tube 21 and the connecting tube 22. When it is necessary to completely disassemble the outer tube 11 and the inner tube 12, and the corrugated tube 21 and the connecting tube 22, it is only necessary to pull the two ends of the pipe in the opposite direction.

[0035] To further prevent the connection between the main pipe 1 and the connecting pipe 2 from loosening, a magnet 121 is embedded in the outer wall of the end of the inner pipe 12, and a magnetic block 211 that attracts the magnet 121 is embedded in the outer wall of the end of the corrugated pipe 21. Furthermore, at least one magnet 121 is provided, and the magnetic block 211 corresponds to the magnet 121 one by one.

[0036] Furthermore, in this embodiment, there are included angles between the axial notch 3 on the outer tube 11 and its central axis, between the axial notch 3 on the inner tube 12 and its central axis, between the axial notch 3 on the corrugated tube 21 and its central axis, and between the axial notch 3 on the connecting tube 22 and its central axis, with the included angle ranging from 30° to 90°. In this embodiment, the axial notch 3 has an included angle of 60°; in other embodiments of this utility model, it can be 45°, 50°, 70°, etc., specifically set according to the diameter of the cable, and no specific limitation is made here.

[0037] The working process of this modular, rotatable cable protection conduit is as follows:

[0038] (1) Thread the inner tube 12 of the main pipe 1 to the connecting pipe 22 of the connecting pipe 2, and the magnetic block 211 at the end of the corrugated pipe 21 attracts the magnet 121 at the end of the inner tube 12; to enhance the stability of the connection and prevent the connection from loosening due to vibration.

[0039] (2) In areas where the track is curved or undulating, manually bend the connecting pipe 2 to adjust the angle.

[0040] (3) When it is necessary to repair, replace or install cables, rotate the outer tube 11 so that the axial notch 3 on the outer tube 11 coincides with the axial notch 3 on the inner tube 12.

[0041] Further rotate the bellows 21 and make the axial notch 3 on the bellows 21 coincide with the axial notch 3 on the connecting pipe 22. At the same time, rotate the connecting pipe 22 and adjust the position of the axial notch 3 on the connecting pipe 2 so that it corresponds to the axial notch 3 on the main pipe 1, forming a channel opening. At this time, the cable can be disassembled and repaired from the axial notch 3 of the main pipe 1 and the connecting pipe 2.

[0042] (4) After the maintenance or disassembly is completed, simply rotate the outer tube 11 in the opposite direction so that the elastic block 4 on the inner tube 12 is inserted into the slot on the outer tube 11, and the outer tube 11 and the inner tube 12 are locked and closed.

[0043] Rotate the bellows 21 in the opposite direction so that the elastic block 4 on the connecting pipe 22 is engaged in the slot on the bellows 21, and the bellows 21 and the connecting pipe 22 are in a locked and closed state.

[0044] Therefore, when inspecting and disassembling cables, only a partial rotation is needed to open the axial notch 3, without disassembling the entire pipe, significantly reducing the maintenance pressure during railway maintenance windows. Then, rotating the outer pipe 11 and corrugated pipe 21 in the opposite direction closes the axial notch 3. Simultaneously, rotating the connecting pipe 22 in the opposite direction locks it to the inner pipe 12, and the magnetic block 211 at the end of the corrugated pipe 21 attracts the magnet 121 at the end of the inner pipe 12. This greatly shortens the operation time and effectively prevents the intrusion of gravel and rainwater. Since both the corrugated pipe 21 and the connecting pipe 22 have a certain degree of elasticity, they can elastically deform and absorb high-frequency vibration energy, reducing the impact transmitted to the cable.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotatable and modular cable protection conduit, characterized in that, include: Several main pipes (1) and connecting pipes (2) that can be detachably connected between adjacent main pipes (1); The main pipe (1) includes an outer pipe (11) and an inner pipe (12) located inside the outer pipe (11); the connecting pipe (2) includes a corrugated pipe (21) and a connecting pipe (22) located inside the corrugated pipe (21). Both ends of the connecting pipe (22) extend from the corrugated pipe (21) and are detachably connected to the adjacent inner pipe (12). The side walls of the outer pipe (11), inner pipe (12), corrugated pipe (21) and connecting pipe (22) are all provided with axial notches (3) for assembling and disassembling cables. When the axial notch (3) on the outer tube (11) and the axial notch (3) on the inner tube (12) are completely intersected, the outer tube (11) and the inner tube (12) are in a locked state; when the axial notch (3) on the bellows (21) and the axial notch (3) on the connecting tube (22) are completely intersected, the bellows (21) and the connecting tube (22) are in a locked state.

2. The rotatable cable protection conduit according to claim 1, characterized in that, The outer wall of the inner tube (12) and the outer wall of the connecting tube (22) are respectively provided with elastic locking blocks (4), and the inner wall of the outer tube (11) and the inner wall of the corrugated tube (21) are respectively provided with locking grooves that engage with the elastic locking blocks (4).

3. The rotatable cable protection conduit according to claim 2, characterized in that, The inner wall of the outer tube (11) and the inner wall of the corrugated tube (21) are respectively provided with annular grooves for limiting the axial displacement of the elastic block (4). The grooves are opened on the bottom wall of the annular grooves, and the elastic block (4) extends into the annular grooves and engages with the grooves.

4. The rotatable cable protection conduit according to claim 3, characterized in that, At least one elastic card block (4) is provided, and the card slot corresponds one-to-one with the elastic card block (4).

5. The splicable and rotatable cable protection conduit according to claim 1, characterized in that, The thickness of the corrugated pipe (21) is greater than the thickness of the inner pipe (12).

6. The splicable and rotatable cable protection conduit according to any one of claims 2 to 5, characterized in that, The outer wall of the end of the inner tube (12) is fitted with a magnet (121), and the outer wall of the end of the corrugated tube (21) is fitted with a magnetic block (211) that attracts the magnet (121).

7. The rotatable cable protection conduit according to claim 6, characterized in that, At least one magnet (121) is provided, and the magnetic block (211) corresponds one-to-one with the magnet (121).

8. The rotatable cable protection conduit according to claim 6, characterized in that, The length of the outer tube (11) is equal to the length of the inner tube (12).

9. The rotatable cable protection conduit according to claim 6, characterized in that, The axial notch (3) on the outer tube (11) and its central axis, the axial notch (3) on the inner tube (12) and its central axis, the axial notch (3) on the corrugated tube (21) and its central axis, and the axial notch (3) on the connecting tube (22) and its central axis all have included angles, the included angles ranging from 30° to 90°.

10. The splicable and rotatable cable protection conduit according to claim 6, characterized in that, The connecting pipe (22) includes an elastic tube located inside the corrugated pipe (21) and a rigid tube extending to the outside of the end of the corrugated pipe (21), and the inner tube (12) is threadedly connected to the rigid tube.

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