Cable protection pipe with sub-cable function

Abstract

The application relates to the technical field of cable protection pipes, in particular to a cable protection pipe with a cable separation function, which comprises an outer pipe, a plurality of limiting grooves with equal angles which are arranged on the inner wall of the outer pipe in a surrounding manner, and a plurality of arc-shaped partitions which are arranged on one side of the limiting grooves, the cable protection pipe is capable of realizing flexible switching between the cable separation and non-cable separation states when being used, when cable separation is needed, the arc-shaped partitions can be driven to expand and realize space division by externally operating the free switching assembly to run, so that subsequent cable separation operation is facilitated, when cable separation is not needed, the arc-shaped partitions can be recycled and attached to the limiting grooves by externally operating the free switching assembly to reversely reset and run, the inner space of the pipe is completely released, the original drift diameter is kept, the pipe is suitable for the centralized laying requirement of thick cables or multiple cables, the limitation of the traditional fixed structure is broken, the same protection pipe can adapt to different laying scenes, and the application range is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of cable protection pipe technology, specifically to a cable protection pipe with cable splitting function. Background Technology

[0002] Traditional PVC cable protection pipes mostly only have space for a single cable and cannot effectively separate different types of cables. When multiple cables are inserted into the same protection pipe, they are prone to tangling and squeezing. This not only increases the difficulty of cable installation and maintenance, but also, during cable operation, due to the different heating conditions of different cables, heat conduction between them may cause local overheating, affecting the normal service life of the cables and even posing safety hazards.

[0003] To achieve separate laying and protection of different cables and avoid mutual interference, existing protective pipes with cable separation functions usually have internal supports or partitions. These components divide the inside of the pipe into multiple independent spaces to meet the cable separation requirements.

[0004] However, this type of design has obvious limitations. Since the internal supports and partitions are mostly fixedly connected to the pipe body, they cannot be disassembled or adjusted according to actual usage needs. When the laying scenario does not require cable splitting, these fixed supports and partitions still occupy the internal space of the pipe, resulting in a reduction in the effective diameter of the pipe. This not only affects the efficiency of cable laying, but may also be unable to accommodate thicker cables or multiple cables laid together due to space constraints. This structural fixation makes it difficult for the same protective pipe to flexibly switch between cable splitting and non-cable splitting conditions, which greatly limits its scope of application and makes its poor versatility quite prominent. Summary of the Invention

[0005] The purpose of this invention is to provide a cable protection pipe with cable splitting function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable protection pipe with cable splitting function, comprising an outer pipe, a plurality of limiting grooves equally angledly formed on the inner wall of the outer pipe, and a plurality of arc-shaped partitions disposed on one side of the plurality of limiting grooves. An annular rotating groove is formed around the outer end of one side of the outer pipe, and a free switching assembly is disposed outside the annular rotating groove. The free switching assembly includes an annular rotating ring and a limiting toothed ring. The annular rotating ring is fitted and rotatably mounted on the outside of the annular rotating groove, and the limiting toothed ring is fixedly mounted on the inner wall of one side of the annular rotating ring. An auxiliary limiting assembly is disposed between the annular rotating ring and the bottom wall of the annular rotating groove. A plurality of air pressure balancing assemblies are disposed inside the outer pipe on the side near the plurality of arc-shaped partitions. The air pressure balancing assembly includes a rotating ball and a limiting ring. The rotating ball is embedded and rotatably engaged inside the arc-shaped partition on the corresponding side, and the limiting ring is fixedly mounted through and inside the outer pipe on the side near the rotating ball.

[0007] Furthermore, a rotating rod is fixedly installed inside each of the arc-shaped partitions on the side near the corresponding side limiting groove. Both ends of the rotating rod are rotatably installed on the outside of both sides of the outer tube. A limiting gear is fixedly installed at the end of the rotating rod near the limiting gear ring. A rubber sealing column is fixedly installed on the side of each of the arc-shaped partitions away from the rotating rod.

[0008] Furthermore, one side of the limiting gear is meshed with the tooth end of one side of the limiting gear ring, and a positioning ring is fixedly installed through the outside of the annular rotating groove. The annular rotating ring has an annular positioning groove embedded in the inside of the side near the positioning ring, and the outside of the positioning ring and the inner wall of the annular positioning groove are in a close rotatable connection.

[0009] Furthermore, several friction blocks are fixedly installed around the outside of the annular rotating ring at equal angles. An indicator arrow is fixedly installed on the outside of the annular rotating ring near each arc-shaped partition. Cable splitting and merging indicator blocks are symmetrically fixedly installed on the outside of the outer tube near the indicator arrow.

[0010] Furthermore, the auxiliary limiting component includes several limiting balls and several abutting grooves. The several limiting balls are arranged at equal angles around the outer side of the annular rotating ring away from the limiting tooth ring, and the several abutting grooves are arranged at equal angles around the inner side of the annular rotating ring near the several limiting balls.

[0011] Furthermore, each side of the outer tube near the limiting balls has an embedded mounting hole, and a sliding block is slidably engaged inside the opening of the mounting hole. One end of the sliding block is fixedly installed to one end of the corresponding limiting ball.

[0012] Furthermore, an abutment spring is provided between one side of the inner wall of the mounting hole and one side of the outer surface of the sliding block. One end of the abutment spring is embedded and fixedly installed on one side of the inner wall of the mounting hole, and the other end of the abutment spring is embedded and fixedly installed on one side of the outer surface of the sliding block.

[0013] Furthermore, a fixing ring is fixedly installed on the inner wall of the limiting ring near the inside of the outer tube. The inner diameter of the fixing ring is smaller than the inner diameter of the limiting ring. An abutment ring is slidably disposed on the inner wall of the limiting ring near the outside of the outer tube. A sealing disc is fixedly installed on the outer side of the abutment ring away from the fixing ring.

[0014] Furthermore, several telescopic rods are fixedly installed at equal angles around the outside of the side of the contact ring away from the sealing disc. The ends of the telescopic rods away from the contact ring are all fixedly installed on the outside of one side of the fixed ring. Tension springs are sleeved through the outside of the telescopic rods. The two ends of the tension springs are respectively fixedly installed on one side of the contact ring and the fixed ring.

[0015] Furthermore, the inner side of the contact ring near the sealing disc is provided with several vent holes at equal angles, and the outer surface of the contact ring is provided with several guide grooves at equal angles. The inner wall of the limiting ring near the guide grooves is provided with guide strips that protrude and are fixed thereon. The guide strips and guide grooves are connected by a sliding seal.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting and operating the free-switching component, this cable protection pipe can flexibly switch between cable splitting and non-cable splitting states during use. When cable splitting is required, the free-switching component can be operated externally to drive the arc-shaped partition to unfold, thereby dividing the space and facilitating subsequent cable splitting operations. At the same time, the mutual adhesion of the rubber sealing columns forms independent sealed compartments, which not only avoids interference between different cables, but also enhances the overall structural stability through the mutual support of the sealing columns. When cable splitting is not required, the free-switching component can be operated externally to reverse the reset operation, allowing the arc-shaped partition to retract and fit into the limiting groove, completely releasing the internal space of the pipe, maintaining the original diameter, and adapting to the needs of thicker cables or multiple cables being laid in a concentrated manner. This breaks through the limitations of traditional fixed structures, allowing the same protection pipe to adapt to different laying scenarios and greatly improving its applicability.

[0018] 2. In cable splitting mode, the narrow, independent channels separated by the arc-shaped partition are prone to localized high temperatures due to dense cables and concentrated heat dissipation, leading to air expansion and a sudden increase in air pressure. At this time, the air pressure balancing component is set and automatically triggered to achieve rapid connection with the outside world, real-time resolution of pressure fluctuations, prevention of pipe cracking due to high pressure deformation, prevention of cable sheath bulging and damage due to pressure difference, ensuring the integrity of the insulation layer, and reducing signal interruption or power failure. It is especially suitable for cable laying in high-temperature environments. At the same time, in non-cable splitting mode, the arc-shaped partition retracts and drives the rotating ball bearings to block the limit ring, preventing external moisture and dust from entering. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall and partial cross-sectional three-dimensional structure of the present invention;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the overall front view of the present invention;

[0023] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the annular rotating ring of the present invention;

[0024] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0025] Figure 7 for Figure 5 Enlarged structural diagram at point C;

[0026] Figure 8 This is a three-dimensional structural diagram of the annular rotating groove and the limiting ring of the present invention;

[0027] Figure 9 This is a partial cross-sectional three-dimensional structural schematic diagram of the outer tube and the annular rotating ring of the present invention;

[0028] Figure 10 for Figure 9 Enlarged structural diagram at point D;

[0029] Figure 11 This is a partial cross-sectional three-dimensional structural schematic diagram of the outer tube and the limiting ring of the present invention;

[0030] Figure 12 for Figure 11 Enlarged structural diagram at point E;

[0031] Figure 13This is a front sectional view of the outer tube and the contact ring of the present invention.

[0032] The components represented by each number in the attached diagram are listed below: 1. Outer tube; 2. Limiting groove; 3. Arc-shaped partition; 4. Rotating rod; 5. Annular rotating groove; 6. Annular rotating ring; 7. Limiting gear; 8. Limiting toothed ring; 9. Friction block; 10. Indicating arrow; 11. Cable splitting marker block; 12. Merging marker block; 13. Positioning ring; 14. Annular positioning groove; 15. Limiting ball; 16. Abutment groove; 17. Mounting hole; 18. Sliding block; 19. Abutment spring; 20. Rotating ball; 21. Limiting ring; 22. Fixing ring; 23. Abutment ring; 24. Sealing disc; 25. Telescopic rod; 26. Tension spring; 27. Vent hole; 28. Guide groove; 29. ​​Guide strip; 30. Rubber sealing post. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1 - Figure 10 A cable protection pipe with cable splitting function includes an outer pipe 1, a plurality of limiting grooves 2 that are equally angledly opened around the inner wall of the outer pipe 1, and a plurality of arc-shaped partitions 3 arranged on one side of the plurality of limiting grooves 2. An annular rotating groove 5 is opened around the outer end of one side of the outer pipe 1. A free switching component is arranged outside the annular rotating groove 5. The free switching component includes an annular rotating ring 6 and a limiting toothed ring 8. The annular rotating ring 6 is fitted and rotated around the outside of the annular rotating groove 5. The limiting toothed ring 8 is fixedly installed on the inner wall of one side of the annular rotating ring 6. An auxiliary limiting component is arranged between the annular rotating ring 6 and the bottom wall of the annular rotating groove 5.

[0035] A rotating rod 4 is fixedly installed inside each of the arc-shaped partitions 3 on the side near the corresponding side limiting groove 2. Both ends of the rotating rod 4 are fixedly installed on the outside of the outer tube 1 on both sides. A limiting gear 7 is fixedly installed at the end of the rotating rod 4 near the limiting tooth ring 8. A rubber sealing column 30 is fixedly installed on the side of each of the arc-shaped partitions 3 away from the rotating rod 4.

[0036] Specifically, by setting the rubber sealing posts 30, when the arc-shaped partition 3 is unfolded in the cable separation state, the rubber sealing posts 30 at its ends fit tightly together, forming the first sealing barrier by utilizing the elastic deformation characteristics of the rubber material. This elastic fit can automatically compensate for the assembly error of the arc-shaped partition 3 and the small displacement during operation, ensuring the airtightness of the independent compartments and effectively preventing water vapor, dust and corrosive media from penetrating between compartments, avoiding insulation aging of different cables due to cross-contamination of the environment. At the same time, from the perspective of structural stability, the multiple rubber sealing posts 30 abut against each other to form distributed support, evenly transmitting the radial force of the arc-shaped partition 3 to the entire inner wall of the pipe, preventing the deformation of a single arc-shaped partition 3 due to excessive local load.

[0037] One side of the limiting gear 7 is meshed with the tooth end of one side of the limiting gear ring 8. The outer side of the annular rotating groove 5 is fixedly installed with a positioning ring 13. The inner side of the annular rotating ring 6 near the positioning ring 13 is embedded with an annular positioning groove 14. The outer side of the positioning ring 13 and the inner wall of the annular positioning groove 14 are in a close-fitting rotating connection.

[0038] Several friction blocks 9 are fixedly installed around the outside of the annular rotating ring 6 at equal angles. An indicator arrow 10 is fixedly installed on the outside of the annular rotating ring 6 near each arc-shaped partition 3. Cable splitting block 11 and merging block 12 are symmetrically fixedly installed on the outside of the outer tube 1 near the indicator arrow 10.

[0039] Specifically, the indicator arrow 10 on the outside of the rotating ring 6 points to the cable splitting marker block 11 and the merging marker block 12 as it rotates, providing intuitive and clear status feedback for operation and maintenance. From the perspective of ease of operation, construction personnel do not need to disassemble the pipe or use tools to explore the status of the internal arc-shaped partition 3. They can quickly confirm that the protective pipe has switched to the cable splitting mode simply by external visual observation, eliminating the cumbersome steps of traditionally requiring internal inspection to determine the status. Especially in scenarios where operation is restricted, such as at height or in confined spaces, it can significantly shorten the status confirmation time and improve construction efficiency. From the perspective of preventing misoperation, the correspondence between the arrow and the cable splitting marker block 11 forms a standardized basis for status judgment, which can effectively avoid misjudgment caused by operational memory deviation or lack of experience, prevent the cable from being mistakenly threaded into the wrong channel due to unclear status, and reduce the risk of rework.

[0040] The auxiliary limiting component includes several limiting balls 15 and several abutting grooves 16. The several limiting balls 15 are arranged at equal angles around the outer side of the annular rotating ring 6 away from the limiting tooth ring 8, and the several abutting grooves 16 are arranged at equal angles around the inner side of the annular rotating ring 6 near the several limiting balls 15.

[0041] The outer tube 1 has an embedded mounting hole 17 on the side near the several limiting balls 15. A sliding block 18 is slidably engaged inside the opening end of the mounting hole 17. One end of the sliding block 18 is fixedly installed with one end of the corresponding limiting ball 15.

[0042] An abutment spring 19 is provided between one side of the inner wall of the mounting hole 17 and one side of the outer surface of the sliding block 18. One end of the abutment spring 19 is embedded and fixedly installed on one side of the inner wall of the mounting hole 17, and the other end of the abutment spring 19 is embedded and fixedly installed on one side of the outer surface of the sliding block 18.

[0043] In this implementation, when it is necessary to separate the cable during installation, the operator applies rotational force by holding the friction block 9 on the outside of the annular rotating ring 6, causing the annular rotating ring 6 to move in a circular motion along the annular rotating groove 5. At this time, the limiting tooth ring 8 on the inner side of the annular rotating ring 6 rotates synchronously, and its tooth ends mesh with several limiting gears 7, driving the rotating rod 4 fixed to the limiting gears 7 to rotate. The rotating rod 4 passes through the arc-shaped partition 3 and is fixed to it. Therefore, the arc-shaped partition 3 rotates and unfolds towards the center of the pipe with the rotating rod 4, gradually disengaging from the limiting groove 2. When the arc-shaped partition 3 rotates to a preset angle, it moves away from the rotating rod 4. The rubber sealing posts 30 on one side fit together, thereby dividing the interior of the outer tube 1 into multiple independent sealed compartments. During this process, the annular positioning groove 14 of the annular rotating ring 6 slides along the positioning ring 13 to ensure rotational stability. In the auxiliary limiting assembly, the abutment spring 19 pushes the sliding block 18 to drive the limiting ball 15 to embed into the abutment groove 16 of the annular rotating ring 6. The frictional force limits the positional displacement of the annular rotating ring 6 to ensure stability after unfolding. At the same time, the indicator arrow 10 on the outside of the annular rotating ring 6 points to the cable separation marking block 11 as it rotates, indicating that it has switched to the cable separation state and the cable separation preparation is complete.

[0044] When switching to the non-separated cable state is required, the annular rotating ring 6 is rotated in the opposite direction. The limiting gear ring 8 drives the limiting gear 7 to rotate in the opposite direction. The rotating rod 4 drives the arc-shaped partition 3 to rotate back into the limiting groove 2. The rubber sealing column 30 separates with the arc-shaped partition 3, releasing the internal space of the pipeline. During the rotation of the annular rotating ring 6, the contact groove 16 squeezes the limiting ball 15, causing it to compress the contact spring 19 through the sliding block 18 and retract into the mounting hole 17, releasing the cable separation state lock. When the arc-shaped partition 3 is completely attached to the inner wall of the limiting groove 2, the limiting ball 15 is inserted into the corresponding contact groove 16 under the action of the contact spring 19, completing the non-separated cable state lock. At this time, the indicator arrow 10 points to the merging indicator block 12, and a complete large-diameter space is formed inside the pipeline, which is suitable for the needs of laying a single thick cable or multiple cables in a concentrated manner.

[0045] In summary, this cable protection pipe allows for flexible switching between cable separation and non-cable separation states during use, breaking through the limitations of traditional fixed structures and enabling the same protection pipe to adapt to different laying scenarios, greatly improving its applicability.

[0046] Example 2: Please refer to Figure 11 - Figure 13 This embodiment further explains the first embodiment. Several air pressure balancing components are provided inside the outer tube 1 on the side near several arc-shaped partitions 3. The air pressure balancing components include rotating balls 20 and limiting rings 21. The rotating balls 20 are embedded and rotated and engaged inside the arc-shaped partitions 3 on the corresponding side. The limiting rings 21 are fixedly installed inside the outer tube 1 on the side near the rotating balls 20.

[0047] A fixing ring 22 is fixedly installed on the inner wall of the limiting ring 21 near the inside of the outer tube 1. The inner diameter of the fixing ring 22 is smaller than the inner diameter of the limiting ring 21. An abutment ring 23 is slidably disposed on the inner wall of the limiting ring 21 near the outside of the outer tube 1. A sealing disc 24 is fixedly installed on the outside of the abutment ring 23 away from the fixing ring 22.

[0048] Several telescopic rods 25 are fixedly installed at equal angles around the outside of the side of the contact ring 23 away from the sealing disc 24. The ends of the telescopic rods 25 away from the contact ring 23 are all fixedly installed on the outside of the fixed ring 22. Tension springs 26 are sleeved through the outside of the telescopic rods 25. The two ends of the tension springs 26 are respectively fixedly installed on the side of the contact ring 23 and the fixed ring 22.

[0049] The inner side of the contact ring 23 near the sealing disc 24 has several vent holes 27 arranged at equal angles. The outer surface of the contact ring 23 has several guide grooves 28 arranged at equal angles. The inner wall of the limiting ring 21 near the guide grooves 28 has guide strips 29 protruding and fixed. The guide strips 29 and the guide grooves 28 are connected by a sliding seal.

[0050] In this embodiment, when the arc-shaped partition 3 unfolds into the cable distribution state, the rotating ball 20 inside it rotates with the partition and disengages from the limiting ring 21, releasing the initial lock on the air pressure balancing component. At this time, if the cables in the independent channel generate a large amount of heat due to dense laying or high temperature environment, the air in the channel will expand rapidly and the air pressure will rise. The increased air pressure will act on the abutment ring 23 inside the limiting ring 21, overcoming the preload of the tension spring 26 and pushing the abutment ring 23 to slide outward along the inner wall of the limiting ring 21. During the sliding process of the abutment ring 23, the guide groove 28 on its outer surface moves synchronously along the guide strip 29 on the inner wall of the limiting ring 21 to ensure stable sliding direction and maintain sealing gap to avoid air leakage. When the abutment ring 23 moves to the preset position, the exhaust hole 27 inside it disengages from the limiting ring 21. The shielding allows the channel to connect with the external atmosphere. High-pressure gas inside the channel is quickly discharged through the exhaust port 27, achieving air pressure balance, eliminating pressure fluctuations in real time, preventing pipe cracking due to high pressure deformation, preventing cable sheath bulging or damage due to pressure difference, ensuring the integrity of the insulation layer, and reducing signal interruption or power failure. It is especially suitable for cable laying in high-temperature environments. When the air pressure drops to a safe range, the tension spring 26 pulls the abutment ring 23 to reset, and the exhaust port 27 is re-closed by the fixing ring 22. The telescopic rod 25 plays a guiding and supporting role in this process, preventing the abutment ring 23 from shifting. At the same time, the rotating ball 20 in the unfolded state protrudes from the inner wall of the arc-shaped partition 3, forming a rolling support surface. When the cable is threaded, it contacts the rotating ball 20, converting sliding friction into rolling friction, thereby reducing the resistance to threading.

[0051] It should also be noted that when the arc-shaped baffle 3 is retracted into the non-cable-separation state, the rotating ball 20 rotates with the baffle to the inside of the limiting ring 21 to form the first seal. At the same time, the compression tension spring 26 drives the sealing disc 24 to press tightly against the outer port of the limiting ring 21 to form the second seal, which further strengthens the tightness of the fit between the contact ring 23 and the limiting ring 21 and avoids seal failure. At this time, the inside of the outer pipe 1 is a large-diameter space, and the air pressure fluctuation can be balanced by natural diffusion without the need for the intervention of the air pressure balancing component. The sealing structure ensures the overall protection performance of the pipeline and is suitable for harsh environments such as outdoor and humid conditions. Through the linkage with the arc-shaped baffle 3, the air pressure balancing component automatically switches to the sealing mode in the combined state to achieve on-demand adaptation of protection and function.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable protection pipe with cable splitting function, comprising an outer pipe (1), a plurality of limiting grooves (2) equally angledly formed around the inner wall of the outer pipe (1), and a plurality of arc-shaped partitions (3) disposed on one side of the plurality of limiting grooves (2), characterized in that: An annular rotating groove (5) is provided around one end of the outer tube (1), and a free switching component is provided outside the annular rotating groove (5). The free switching component includes an annular rotating ring (6) and a limiting toothed ring (8). The annular rotating ring (6) is fitted and rotated on the outside of the annular rotating groove (5). The limiting toothed ring (8) is fixedly installed on the inner wall of one side of the annular rotating ring (6). An auxiliary limiting component is provided between the annular rotating ring (6) and the bottom wall of the annular rotating groove (5). Several air pressure balancing components are provided inside the side of the outer tube (1) near several arc-shaped partitions (3). The air pressure balancing assembly includes a rotating ball (20) and a limiting ring (21). The rotating ball (20) is embedded and rotated and engaged inside the arc-shaped partition (3) on the corresponding side. The limiting ring (21) is fixedly installed inside the outer tube (1) on the side close to the rotating ball (20). A rotating rod (4) is fixedly installed inside the side of each of the arc-shaped partitions (3) near the corresponding side limiting groove (2). Both ends of the rotating rod (4) are fixedly installed on the outside of the outer tube (1) on both sides. A limiting gear (7) is fixedly installed at the end of the rotating rod (4) near the limiting tooth ring (8). A rubber sealing column (30) is fixedly installed on the side of each of the arc-shaped partitions (3) away from the rotating rod (4). The auxiliary limiting component includes several limiting balls (15) and several abutting grooves (16). The several limiting balls (15) are arranged at equal angles around the outside of the annular rotating ring (6) on the side away from the limiting tooth ring (8). The several abutting grooves (16) are arranged at equal angles around the inside of the annular rotating ring (6) on the side close to the several limiting balls (15). The outer tube (1) has an embedded mounting hole (17) on one side near several limiting balls (15). A sliding block (18) is slidably engaged inside the opening end of the mounting hole (17). One end of the sliding block (18) is fixedly installed to one end of the corresponding limiting ball (15).

2. A cable protection pipe with cable splitting function according to claim 1, characterized in that: One side of the limiting gear (7) is meshed with the tooth end of one side of the limiting gear ring (8). A positioning ring (13) is fixedly installed through the outside of the annular rotating groove (5). An annular positioning groove (14) is embedded and opened around the inside of the side of the annular rotating ring (6) near the positioning ring (13). The outside of the positioning ring (13) and the inner wall of the annular positioning groove (14) are in a close rotating connection.

3. A cable protection pipe with cable splitting function according to claim 1, characterized in that: Several friction blocks (9) are fixedly installed around the outside of the annular rotating ring (6) at equal angles. An indicator arrow (10) is fixedly installed on the outside of the annular rotating ring (6) near each arc-shaped partition (3). A cable splitting mark (11) and a merging mark (12) are symmetrically fixedly installed on the outside of the outer tube (1) near the indicator arrow (10).

4. A cable protection pipe with cable splitting function according to claim 1, characterized in that: An abutment spring (19) is provided between one side of the inner wall of the mounting hole (17) and one side of the outer surface of the sliding block (18). One end of the abutment spring (19) is embedded and fixedly installed on one side of the inner wall of the mounting hole (17), and the other end of the abutment spring (19) is embedded and fixedly installed on one side of the outer surface of the sliding block (18).

5. A cable protection pipe with cable splitting function according to claim 1, characterized in that: A fixing ring (22) is fixedly installed on the inner wall of the limiting ring (21) near the inside of the outer tube (1). The inner diameter of the fixing ring (22) is smaller than the inner diameter of the limiting ring (21). An abutment ring (23) is slidably provided on the inner wall of the limiting ring (21) near the outside of the outer tube (1). A sealing disc (24) is fixedly installed on the outside of the abutment ring (23) away from the fixing ring (22).

6. A cable protection pipe with cable splitting function according to claim 5, characterized in that: Several telescopic rods (25) are fixedly installed at equal angles around the outside of the side of the contact ring (23) away from the sealing disc (24). The ends of the telescopic rods (25) away from the contact ring (23) are all fixedly installed on the outside of the fixed ring (22). Tension springs (26) are sleeved through the outside of the telescopic rods (25). The two ends of the tension springs (26) are respectively fixedly installed on the side of the contact ring (23) and the fixed ring (22).

7. A cable protection pipe with cable splitting function according to claim 6, characterized in that: The inner side of the contact ring (23) near the sealing disc (24) is provided with several exhaust holes (27) at equal angles. The outer surface of the contact ring (23) is provided with several guide grooves (28) at equal angles. The inner wall of the limiting ring (21) near the several guide grooves (28) is provided with guide strips (29) protruding and fixed. The guide strips (29) and the guide grooves (28) are connected by a sliding seal.

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