An underground pipeline protection device for cable laying

Abstract

The present invention discloses an underground pipeline protection device for cable laying, which relates to the technical field of underground pipeline protection and includes an outer protection tube. An inner protection tube for secondary protection of the cable body is arranged inside the outer protection tube, and the circumferential outer wall of the inner protection tube is in contact with the circumferential inner wall of the outer protection tube; the outer protection tube includes an annular part and a rectangular part, and feeding grooves for facilitating the installation of the cable body are formed in the top of the rectangular part and the circumferential outer wall of the inner protection tube; a strengthening component for improving the strength of the outer protection tube is arranged on the top of the rectangular part. In the present invention, the relative position between the inner protection tube and the outer protection tube is fixed, which can better protect the cable body placed in the inner protection tube, and the inner protection tube and the outer protection tube form a relatively closed space, reducing the direct action of external pressure on the cable body and avoiding damage to the cable body, thereby enhancing the protection ability of the cable body.

Description

Technical Field

[0001] The present invention relates to the technical field of underground pipeline protection. Specifically, it relates to an underground pipeline protection device for cable laying. Background Art

[0002] In the current process of urban construction and infrastructure development, as a key carrier for power transmission and communication, the underground laying of cables is becoming increasingly widespread. In order to avoid damage to the cables after laying, pipeline protection devices are mostly set up for protection.

[0003] After retrieval, a Chinese invention patent with the publication number CN112460329B discloses a protection and reinforcement structure for underground pipelines, belonging to the field of pipeline protection. It includes a reinforcement pipe body, which includes an inner protection pipe and an outer protection pipe. A support member is arranged between the inner protection pipe and the outer protection pipe. Connecting flanges are arranged at both ends of the reinforcement pipe body. A maintenance opening is formed on the side wall of the reinforcement pipe body, and the maintenance opening is formed along the length direction of the reinforcement pipe body and communicates with the inside of the inner protection pipe. A butting plate is arranged between the inner protection pipe and the outer protection pipe at the position of the maintenance opening. A closing block is arranged on the reinforcement pipe body at the position of the maintenance opening. The closing block cooperates with the maintenance opening. When the closing block is located at the maintenance opening, the closing block abuts against the butting plates on both sides. A fixing device for fixing the position of the closing block is arranged on the closing block.

[0004] After comprehensively analyzing the existing technologies, it is found that the above patent still has the following deficiencies: Although the above patent also realizes the protection of cables by setting inner and outer protection pipes, the opening of its inner protection pipe is always vertically upward, resulting in insufficient ability of the inner protection pipe to bear vertical pressure. When external pressure other than soil (such as vehicle driving) occurs, the inner protection pipe is prone to bending or even breaking, and its overall compressive performance is also relatively poor, unable to meet the protection requirements for cables. Therefore, there is an urgent need for an underground pipeline protection device for cable laying to solve the above problems. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes an underground pipeline protection device for cable laying to overcome the above technical problems existing in the related prior arts.

[0006] The technical solution of the present invention is realized as follows:

[0007] An underground pipeline protection device for cable laying includes an outer protection pipe, and an inner protection pipe for secondary protection of the cable body is arranged inside the outer protection pipe. The circumferential outer wall of the inner protection pipe is in contact with the circumferential inner wall of the outer protection pipe;

[0008] The outer protective tube includes a circular ring portion and a rectangular portion. Feed grooves for facilitating the installation of cable bodies are provided on the top of the rectangular portion and the circumferential outer wall of the inner protective tube.

[0009] A strengthening component for enhancing the strength of the outer protective tube is provided on the top of the rectangular portion.

[0010] A lateral support component is arranged inside the inner protective tube.

[0011] Docking plates and docking boards for facilitating docking installation are respectively arranged at both ends of the outer protective tube.

[0012] A rotating component for driving the inner protective tube to rotate inside the outer protective tube is arranged inside the docking plate.

[0013] Further, the strengthening component includes a support frame, an inner ring frame, and partition plates. A fixing plate is fixedly connected to the bottom of the strengthening component. A plurality of support frames form a honeycomb structure on the top of the fixing plate. The inner ring frame is fixedly connected to the support frame. Partition plates are fixedly connected to the circumferential inner wall of the inner ring frame at equal distances and are circularly distributed. The cross-section of the partition plate is an isosceles triangle. A second spring is fixedly connected to the bottom outer wall of the fixing plate, and the bottom end of the second spring is fixedly connected to a mounting plate.

[0014] Further, a clamping hole is provided on the top outer wall of the rectangular portion. A clamping column is fixedly connected to the bottom outer wall of the mounting plate. The mounting plate is fixedly connected to the top outer wall of the rectangular portion through the clamping connection between the clamping column and the clamping hole.

[0015] Further, the lateral support component includes a cross support plate fixedly connected to the circumferential inner wall of the inner protective tube. A guide post is inserted into the top of the cross support plate. Rotating seats and limit caps are respectively fixedly connected to both ends of the guide post. Rotating shafts are rotatably connected to both inner side walls of the rotating seat. Second support rods are fixedly connected to the circumferential outer wall of the rotating shafts. A first support rod is fixedly connected to one side of the rotating seat. A sliding groove is provided on the circumferential inner wall of the inner protective tube. One ends of the first support rod and the second support rod are located inside the sliding groove. A first spring is fixedly connected to the bottom outer wall of the rotating seat, and the bottom end of the first spring is fixedly connected to the top of the cross support plate.

[0016] Further, pressure rods are fixedly connected to the bottom outer wall of the fixing plate at equal distances. A pressure ball is fixedly connected to the end of the pressure rod extending into the inner protective tube. The circumferential outer wall of the pressure ball is in contact with the top of the rotating seat. Rotating grooves are provided at one ends of the first support rod and the second support rod, and rollers are rotatably connected inside the rotating grooves. The circumferential outer wall of the roller is closely attached to the circumferential inner wall of the sliding groove.

[0017] Furthermore, the inner protection tube includes a first arc-shaped tube portion and a second arc-shaped tube portion, and the thickness of the first arc-shaped tube portion is greater than that of the second arc-shaped tube portion.

[0018] Furthermore, the rotating assembly includes a gear disk disposed inside the docking disk. A circular hole is formed in the center of the gear disk, and a rotating column is inserted into the circular hole. A mating groove is formed on one side of the gear disk, and the mating groove communicates with the circular hole. A cross plate is fixedly connected to the circumferential outer wall of the rotating column, and the cross plate is adapted to the mating groove. A tooth fan plate is engaged with the circumferential outer wall of the gear disk, and the tooth fan plate is fixedly connected to the outer wall of one end of the inner protection tube. An arc-shaped groove is formed in the circumferential inner wall of the docking disk, and the tooth fan plate passes through the inner wall of the arc-shaped groove. Through holes are formed on both sides of the docking disk, and the rotating column and the cross plate both pass through the inside of the through holes.

[0019] Furthermore, a stabilizing seat for ensuring the stable rotation of the gear disk is fixedly connected to the circumferential inner wall of the docking disk, and the outer walls on both sides of the stabilizing seat are in contact with the outer walls on both sides of the gear disk.

[0020] Furthermore, a rotating block is fixedly connected to one end of the rotating column, and the diameter of the rotating block is greater than the diameter of the through hole.

[0021] Furthermore, a threaded cylinder seat is fixedly connected to the outer wall of one side of the docking plate, and the threaded cylinder seat is fixedly connected to the outer protection tube. A threaded column is fixedly connected to one end of the rotating column, and the threaded column forms a threaded connection with the threaded cylinder seat. The diameter of the threaded column is greater than the length of the cross plate.

[0022] Advantages of the present invention:

[0023] The present invention provides an underground pipeline protection device for cable laying. Through the provided rotating assembly, when the cable body is placed, the staff rotates the rotating block, and the rotating column can be driven to rotate together through the rotating block. At the same time, the circumferential outer wall of the rotating column is fixedly connected with a cross plate, and the cross plate cooperates with the matching groove. Therefore, during the rotation of the rotating column, the gear plate can be driven to rotate together. When the gear plate is subjected to a rotating force, it can drive the gear fan plate meshing with it to rotate together. The gear fan plate is fixedly connected to the end of the inner protective tube, so that the inner protective tube is driven to rotate in the outer protective tube through the circular motion of the gear fan plate. When the rotating block cannot rotate, the closed area in the inner protective tube will be close to the top of the outer protective tube, thereby achieving The relative position between the inner protective tube and the outer protective tube is fixed, which can better protect the cable body placed in the inner protective tube, and the inner protective tube and the outer protective tube form a relatively closed space, which reduces the direct effect of external pressure on the cable body, avoids damage to the cable body, and enhances the protection ability of the cable body. At the same time, the inner protective tube and the outer protective tube fit tightly, making the structure of the entire underground pipeline protection device more stable. In the underground environment, it may be affected by various external forces such as soil pressure and ground load. Through this close fitting method, external forces can be more effectively dispersed and transmitted to prevent the inner protective tube from shaking randomly in the outer protective tube, thereby ensuring the stability and reliability of the protection device under complex working conditions.

[0024] The present invention provides an underground pipeline protection device for cable laying. Through the reinforcement component, when the top of the outer protective pipe is subjected to soil pressure, the honeycomb structure formed by the multiple support frames in the reinforcement component can evenly disperse the concentrated pressure on the top to each support frame, and then transmit it to the entire outer protective pipe and the surrounding soil, so as to avoid deformation or damage of the outer protective pipe caused by excessive local pressure. At the same time, the honeycomb structures formed by the multiple support frames are interconnected to form a stable spatial framework, which can improve the overall structural strength and stability of the outer protective pipe, so that it can maintain its shape when subjected to soil pressure and reduce the possibility of deformation. Moreover, the unique shape and mechanical properties of the honeycomb structure make it have high compressive strength and can withstand greater pressure without damage, thereby effectively protecting the facilities or media inside the outer protective pipe from the influence of soil pressure. Moreover, the inner ring frame and the partition plate arranged inside the support frame can make the soil fully embedded in the gap between the support frame and the inner ring frame and the partition plate when buried in the soil, thereby effectively increasing the contact area and friction between the protective pipe and the surrounding soil, making the connection between the protective pipe and the soil tighter, further improving the stability of the protective pipe in the soil, and reducing the possibility of displacement or shaking due to external force.

[0025] An underground pipeline protection device for cable laying provided by the present invention, through the first support rod and the second support rod arranged inside the inner protection tube, can play a good lateral support role in the normal state to resist the lateral pressure generated by the soil. When the top of the outer protection tube is subjected to an instantaneous pressure other than soil from the outside (such as vehicle driving, etc.), a good buffering effect can be achieved through the second spring at the bottom of the fixed plate, avoiding the situation that the outer protection tube is damaged due to excessive instantaneous pressure. At the same time, during the process of the second spring being compressed by the pressure, the fixed plate will drive the entire pressure rod to descend. When the pressure rod descends, the pressure ball at its end can act on the rotating seat, making the rotating seat receive a downward pressure. When the rotating seat receives an instantaneous downward pressure, it will immediately descend. At this time, the first support rod and the second support rod will slide towards the other end of the chute, thereby forming a triangular support structure to vertically support the inner protection tube and the outer protection tube. Thus, when the entire lateral support assembly is instantaneously compressed, by sacrificing the lateral support force in a short time, the vertical support effect can be improved, further ensuring the stability of the outer protection tube and the inner protection tube when they are compressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic front view structure diagram of the whole of the present invention.

[0028] Figure 2 For the present invention Figure 1 An enlarged structure diagram of part A in the present invention.

[0029] Figure 3 It is a schematic end view structure diagram after the cable body of the present invention is laid.

[0030] Figure 4 It is a schematic end view structure diagram of the whole after the strengthening component is installed in the present invention.

[0031] Figure 5 It is a schematic top view structure diagram of the outer protection tube of the present invention.

[0032] Figure 6 It is a schematic structure diagram of the threaded barrel seat of the present invention.

[0033] Figure 7 It is a schematic structure diagram of the end of the docking plate of the present invention.

[0034] Figure 8 For the present invention Figure 7 An enlarged structure diagram of part B in the present invention.

[0035] Figure 9 This is a schematic cross-sectional view of the end face of the outer protection tube of the present invention.

[0036] Figure 10 For the present invention Figure 9 This is an enlarged schematic structural view of the position C in the present invention.

[0037] Figure 11 This is a schematic structural view of the inner protection tube of the present invention.

[0038] Figure 12 For the present invention Figure 11 This is an enlarged schematic structural view of the position D in the present invention.

[0039] Figure 13 This is a schematic cross-sectional view of the docking plate in the present invention.

[0040] In the figure:

[0041] 1. Outer protection tube; 1001. Ring part; 1002. Rectangular part; 2. Fixed plate; 3. Reinforcement assembly; 3001. Support frame; 3002. Inner ring frame; 3003. Partition board; 4. Docking plate; 5. Mounting plate; 6. Docking board; 7. Inner protection tube; 7001. First arc-shaped tube part; 7002. Second arc-shaped tube part; 8. First support rod; 9. Rotating seat; 10. Rotating shaft; 11. Second support rod; 12. Guide post; 13. Limit cap; 14. First spring; 15. Cross brace plate; 16. Cable body; 17. Second spring; 18. Pressing rod; 19. Pressing ball; 20. Card hole; 21. Threaded barrel seat; 22. Rotating block; 23. Through hole; 24. Rotating column; 25. Cross plate; 26. Threaded column; 27. Chute; 28. Roller; 29. Tooth fan plate; 30. Gear disc; 31. Fitting groove; 32. Arc-shaped groove; 33. Stable seat. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0043] Please refer to Figures 1 - 13 , a cable laying underground pipeline protection device, including an outer protection tube 1, and an inner protection tube 7 for secondary protection of the cable body 16 is arranged inside the outer protection tube 1, and the circumferential outer wall of the inner protection tube 7 is in contact with the circumferential inner wall of the outer protection tube 1;

[0044] The outer protection tube 1 includes a circular ring part 1001 and a rectangular part 1002. Feed grooves for facilitating the installation of the cable wire body 16 are provided at the top of the rectangular part 1002 and on the circumferential outer wall of the inner protection tube 7.

[0045] A strengthening component 3 for enhancing the strength of the outer protection tube 1 is provided at the top of the rectangular part 1002.

[0046] A lateral support component is provided inside the inner protection tube 7.

[0047] Docking plates 4 and docking boards 6 for facilitating docking installation are respectively provided at both ends of the outer protection tube 1.

[0048] Inside the docking plate 4, a rotating component for driving the inner protection tube 7 to rotate inside the outer protection tube 1 is provided. The outer protection tube 1 serves as the outer layer structure of the overall protection device, providing basic protection for the cable wire body 16. The structure composed of the circular ring part 1001 and the rectangular part 1002 facilitates the cooperation with the inner protection tube 7 and the installation of the cable wire body 16. The inner protection tube 7 fits closely with the outer protection tube 1 to form a double-layer protection structure, further enhancing the protection of the cable wire body 16. The settings of the docking plates 4 and the docking boards 6 facilitate the connection and assembly between multiple protection devices, realizing the protection of long-distance cable wire laying. The feed grooves provide a convenient channel for the placement of the cable wire body 16. The strengthening component 3 and the lateral support component respectively enhance the compressive resistance and support capacity of the device from the outside and the inside. The rotating component can adjust the position of the inner protection tube 7 inside the outer protection tube 1 to achieve a better protection effect.

[0049] Preferably, the strengthening component 3 includes a support frame 3001, an inner ring frame 3002, and a partition plate 3003. A fixing plate 2 is fixedly connected to the bottom of the strengthening component 3. A honeycomb structure is formed by multiple support frames 3001 on the top of the fixing plate 2. The inner ring frame 3002 is fixedly connected to the support frame 3001. Equally spaced circularly distributed partition plates 3003 are fixedly connected to the circumferential inner wall of the inner ring frame 3002. The cross-section of the partition plate 3003 is an isosceles triangle. A second spring 17 is fixedly connected to the outer wall of the bottom of the fixing plate 2. The bottom end of the second spring 17 is fixedly connected to a mounting plate 5. In the strengthening component 3, the honeycomb structure formed by the support frames 3001 has good compressive resistance and can evenly disperse the pressure received at the top of the outer protection tube 1. The inner ring frame 3002 and the partition plates 3003 increase the contact area between the soil and the strengthening component 3, enabling the soil to be embedded in the gaps, enhancing the friction with the soil, and improving the stability of the outer protection tube 1 in the soil. The second spring 17 connects the fixing plate 2 and the mounting plate 5 and can undergo elastic deformation when subjected to pressure, playing a buffering role and reducing the impact received by the outer protection tube 1.

[0050] Preferably, a clamping hole 20 is provided in the top outer wall of the rectangular portion 1002. A clamping post is fixedly connected to the bottom outer wall of the mounting plate 5. The mounting plate 5 is fixedly connected to the top outer wall of the rectangular portion 1002 through the clamping connection between the clamping post and the clamping hole 20. Through the clamping structure of the clamping post and the clamping hole 20, the mounting plate 5 can be quickly and firmly installed on the top of the rectangular portion 1002 of the outer protection tube 1, which not only facilitates the installation and disassembly of the strengthening component 3, but also plays a role in sealing and supporting the top of the outer protection tube 1, further improving the overall strength and stability of the outer protection tube 1.

[0051] Preferably, the lateral support assembly includes a cross support plate 15 fixedly connected to the inner circumferential wall of the inner protection tube 7. A guide post 12 is inserted into the top of the cross support plate 15. The two ends of the guide post 12 are respectively fixedly connected with a rotating seat 9 and a limit cap 13. The inner walls on both sides of the rotating seat 9 are rotatably connected with a rotating shaft 10. A second support rod 11 is fixedly connected to the outer circumferential wall of the rotating shaft 10. A first support rod 8 is fixedly connected to one side of the rotating seat 9. A sliding groove 27 is provided in the inner circumferential wall of the inner protection tube 7. One ends of the first support rod 8 and the second support rod 11 are located inside the sliding groove 27. A first spring 14 is fixedly connected to the bottom outer wall of the rotating seat 9. The bottom end of the first spring 14 is fixedly connected to the top of the cross support plate 15. In the normal state, the first support rod 8 and the second support rod 11 cooperate with the sliding groove 27 and, under the action of the cross support plate 15 and the first spring 14, provide lateral support for the inner protection tube 7 to resist the lateral pressure of the soil. When subjected to special pressure, the rotating seat 9 can move along the guide post 12, driving the first support rod 8 and the second support rod 11 to change positions and adjust the support structure.

[0052] Preferably, the bottom outer wall of the fixed plate 2 is fixedly connected with pressure rods 18 distributed at equal intervals. One end of the pressure rod 18 extending into the inner protection tube 7 is fixedly connected with a pressure ball 19. The outer circumferential wall of the pressure ball 19 is in contact with the top of the rotating seat 9. Rotating grooves are provided at one ends of the first support rod 8 and the second support rod 11. A roller 28 is rotatably connected in the rotating groove. The outer circumferential wall of the roller 28 is closely attached to the inner circumferential wall of the sliding groove 27. When an instantaneous pressure is applied to the top of the outer protection tube 1, the fixed plate 2 in the strengthening component 3 drives the pressure rod 18 and the pressure ball 19 to descend. The pressure ball 19 acts on the rotating seat 9, causing the rotating seat 9 to move downward. The roller 28 rolls in the sliding groove 27, reducing the friction when the first support rod 8 and the second support rod 11 move, enabling them to quickly adjust their positions to form a triangular support structure and enhancing the vertical support capacity of the inner protection tube 7 and the outer protection tube 1.

[0053] Preferably, the inner protective tube 7 includes a first arc-shaped tube portion 7001 and a second arc-shaped tube portion 7002. The thickness of the first arc-shaped tube portion 7001 is greater than that of the second arc-shaped tube portion 7002. The first arc-shaped tube portion 7001 is located at the top of the inner protective tube 7, and it bears the vertical pressure of the soil for a long time. Therefore, by increasing the thickness of the first arc-shaped tube portion 7001, it can withstand greater pressure and enhance the protective ability of key parts of the inner protective tube 7. The relatively thin first arc-shaped tube portion 7001 can provide a larger placement space for the cable body 16 to avoid the situation where the cable body 16 is stacked together and the heat cannot be dissipated quickly.

[0054] Preferably, the rotating assembly includes a gear plate 30 arranged inside the docking plate 4, a circular hole is opened in the center of the gear plate 30, a rotating column 24 is inserted in the circular hole, a matching groove 31 is opened on one side of the gear plate 30, the matching groove 31 is connected to the circular hole, a cross plate 25 is fixedly connected to the circumferential outer wall of the rotating column 24, the cross plate 25 is adapted to the matching groove 31, a toothed sector plate 29 is meshed on the circumferential outer wall of the gear plate 30, the toothed sector plate 29 is fixedly connected to the outer wall of one end of the inner protective tube 7, an arc groove 32 is opened on the circumferential inner wall of the docking plate 4, the toothed sector plate 29 passes through the inner wall of the arc groove 32, and the docking plate Through holes 23 are provided on both sides of 4, and the rotating column 24 and the cross plate 25 pass through the inside of the through holes 23. The rotating block 22 drives the rotating column 24 to rotate, and the cross plate 25 on the rotating column 24 interacts with the matching groove 31 of the gear plate 30 to rotate the gear plate 30. At the same time, the gear plate 30 is engaged with the tooth sector plate 29 to drive the tooth sector plate 29 to rotate, thereby making the inner protective tube 7 fixed on the tooth sector plate 29 rotate in the outer protective tube 1, and the arc groove 32 provides guidance and limit for the rotation of the tooth sector plate 29. The through hole 23 facilitates the rotating column 24 and the cross plate 25 to pass through, so as to realize the function of the rotating component.

[0055] Preferably, the circumferential inner wall of the docking plate 4 is fixedly connected with a stabilizing seat 33 which ensures the stable rotation of the gear plate 30. The outer walls on both sides of the stabilizing seat 33 are in contact with the outer walls on both sides of the gear plate 30. The stabilizing seat 33 is in contact with both sides of the gear plate 30, thereby limiting the shaking and deviation of the gear plate 30 during the rotation process, ensuring that the gear plate 30 can rotate stably and smoothly, so that the rotating assembly can reliably drive the inner protective tube 7 to rotate, thereby realizing the precise adjustment of the relative position between the inner protective tube 7 and the outer protective tube 1.

[0056] Preferably, one end of the rotating column 24 is fixedly connected to a rotating block 22, and the diameter of the rotating block 22 is larger than the diameter of the through hole 23. The diameter of the rotating block 22 is larger than the diameter of the through hole 23, which can prevent the rotating column 24 from escaping from the through hole 23 of the docking plate 4, thereby ensuring the integrity and stability of the rotating component structure and ensuring that the rotating column 24 can reliably drive the gear plate 30 to rotate.

[0057] Preferably, one side outer wall of the docking plate 6 is fixedly connected with a threaded barrel seat 21, the threaded barrel seat 21 is fixedly connected with the outer protection tube 1, one end of the rotating column 24 is fixedly connected with a threaded column 26, the threaded column 26 is threadedly connected with the threaded barrel seat 21, the diameter of the threaded column 26 is greater than the length of the cross plate 25. When the rotating column 24 rotates, it drives the threaded column 26 to rotate. The threaded column 26 is threadedly connected with the threaded barrel seat 21 to realize the self-locking function of the rotating assembly, prevent the inner protection tube 7 from rotating randomly during use. At the same time, the threaded barrel seat 21 is fixed on the docking plate 6 of the outer protection tube 1, enhancing the firmness of the connection between the docking disc 4 and the docking plate 6 and improving the stability of the connection of the entire protection device.

[0058] In summary, by means of the above technical solutions of the present invention, when protecting the underground laying of the cable wire body 16, first, the docking discs 4 at both ends of multiple outer protection tubes 1 are fixedly connected with the docking plates 6 through fixing bolts to complete the assembly work of the multiple outer protection tubes 1. Subsequently, the staff places the cable wire body 16 to be laid into the inner protection tube 7 through the feeding groove. After the cable wire body 16 is placed, the staff rotates the rotating block 22, and the rotating block 22 can drive the rotating column 24 to rotate together. At the same time, the circumferential outer wall of the rotating column 24 is fixedly connected with a cross plate 25, and the cross plate 25 cooperates with the mating groove 31. Therefore, during the rotation of the rotating column 24, the gear disc 30 can be driven to rotate together. When the gear disc 30 is subjected to a rotating force, it can drive the toothed fan plate 29 engaged with it to rotate together, and the toothed fan plate 29 is fixedly connected to the end of the inner protection tube 7. Thus, the circumferential movement of the toothed fan plate 29 drives the inner protection tube 7 to rotate within the outer protection tube 1. When the rotating block 22 cannot rotate, the closed area in the inner protection tube 7 will closely adhere to the top of the outer protection tube 1, thereby realizing the relative position fixation between the inner protection tube 7 and the outer protection tube 1, and being able to better protect the cable wire body 16 placed in the inner protection tube 7. Moreover, the inner protection tube 7 and the outer protection tube 1 form a relatively closed space, reducing the direct action of external pressure on the cable wire body 16, avoiding damage to the cable wire body 16, and enhancing the protection ability of the cable wire body 16. At the same time, the inner protection tube 7 and the outer protection tube 1 are closely fitted, making the structure of the entire underground pipeline protection device more stable. In the underground environment, it may be affected by various external forces such as soil pressure and ground load. Through this close-fitting method, the external forces can be more effectively dispersed and transmitted, preventing the inner protection tube 7 from shaking randomly within the outer protection tube 1, and ensuring the stability and reliability of the protection device under complex working conditions;

[0059] At the same time, during the rotation of the rotating column 24, the threaded column 26 at its end can be driven to rotate together, and the threaded column 26 forms a threaded connection with the threaded cylinder seat 21. Therefore, through the threaded connection between the threaded column 26 and the threaded cylinder seat 21, the self-locking of the entire rotating assembly can be achieved, further ensuring the stability of the inner protective tube 7 inside the outer protective tube 1, and the threaded cylinder seat 21 is fixedly connected to the docking plate 6, so as to also play a role in reinforcing the connection between the docking plate 4 and the docking plate 6;

[0060] Subsequently, the staff installs the mounting plate 5 on the top of the outer protective tube 1 through the cooperation of the clamping column and the clamping hole 20 to achieve sealing support for the top of the outer protective tube 1. At this time, the reinforcing component 3 set on the top of the mounting plate 5 can further improve the compressive resistance of the entire outer protective tube 1. When the top of the outer protective tube 1 is subjected to soil pressure, the honeycomb structure formed by the multiple support frames 3001 in the reinforcing component 3 can evenly disperse the concentrated pressure on the top to each support frame 3001, and then transmit it to the entire outer protective tube 1 and the surrounding soil, avoiding deformation or damage of the outer protective tube 1 caused by excessive local pressure. At the same time, the honeycomb structure formed by the multiple support frames 3001 is interconnected to form a stable spatial structure, which can improve the overall structural strength and stability of the outer protective tube 1. It maintains its shape when subjected to soil pressure, reducing the possibility of deformation, and the unique shape and mechanical properties of the honeycomb structure give it high compressive strength, and it can withstand greater pressure without being damaged, thereby effectively protecting the facilities or media inside the outer protective tube 1 from the influence of soil pressure, and the inner ring frame 3002 and the partition 3003 arranged inside the support frame 3001 can make the soil fully embedded in the gap between the support frame 3001 and the inner ring frame 3002 and the partition 3003 when buried in the soil, thereby effectively increasing the contact area and friction between the protective tube and the surrounding soil, making the connection between the protective tube and the soil tighter, further improving the stability of the protective tube in the soil, and reducing the possibility of displacement or shaking due to external forces;

[0061] The first support rod 8 and the second support rod 11 arranged inside the inner protection tube 7 can play a good lateral support role under normal conditions to resist the lateral pressure generated by the soil. When the top of the outer protection tube 1 is subjected to an instantaneous pressure other than soil from the outside (such as vehicle driving, etc.), a good buffering effect can be achieved through the second spring 17 at the bottom of the fixed plate 2, avoiding the situation where the outer protection tube 1 is damaged due to excessive instantaneous pressure. At the same time, during the process of the second spring 17 being compressed by the pressure, the fixed plate 2 will drive the entire pressure rod 18 to descend. When the pressure rod 18 descends, the pressure ball 19 at its end can act on the rotating seat 9, causing the rotating seat 9 to receive a downward pressure. When the rotating seat 9 receives an instantaneous downward pressure, it will immediately descend. At this time, the first support rod 8 and the second support rod 11 will slide towards the other end of the sliding groove 27, thereby forming a triangular support structure to vertically support the inner protection tube 7 and the outer protection tube 1. Thus, when the entire lateral support assembly is instantaneously compressed, by sacrificing the lateral support force in a short time, the vertical support effect can be improved, further ensuring the stability of the outer protection tube 1 and the inner protection tube 7 when they are compressed.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underground pipeline protection device for cable laying, comprising an outer protection tube (1), characterized in that, An inner protection tube (7) for secondary protection of the cable body (16) is arranged inside the outer protection tube (1), and the circumferential outer wall of the inner protection tube (7) is in contact with the circumferential inner wall of the outer protection tube (1); The outer protection tube (1) includes a circular ring part (1001) and a rectangular part (1002), and feeding grooves for facilitating the installation of the cable body (16) are formed in the top of the rectangular part (1002) and the circumferential outer wall of the inner protection tube (7); A strengthening component (3) for enhancing the strength of the outer protection tube (1) is arranged on the top of the rectangular part (1002); A lateral support component is arranged inside the inner protection tube (7); the strengthening component (3) includes a support frame (3001), an inner ring frame (3002) and a partition plate (3003), a fixing plate (2) is fixedly connected to the bottom of the strengthening component (3), a plurality of support frames (3001) form a honeycomb structure on the top of the fixing plate (2), the inner ring frame (3002) is fixedly connected to the support frame (3001), equally spaced circularly distributed partition plates (3003) are fixedly connected to the circumferential inner wall of the inner ring frame (3002), the cross section of the partition plate (3003) is an isosceles triangle, a second spring (17) is fixedly connected to the bottom outer wall of the fixing plate (2), and the bottom end of the second spring (17) is fixedly connected to a mounting plate (5); the lateral support component includes a cross brace plate (15) fixedly connected to the circumferential inner wall of the inner protection tube (7), a guide post (12) is inserted into the top of the cross brace plate (15), the two ends of the guide post (12) are respectively fixedly connected to a rotating seat (9) and a limit cap (13), rotating shafts (10) are rotatably connected to the inner walls on both sides of the rotating seat (9), a second support rod (11) is fixedly connected to the circumferential outer wall of the rotating shaft (10), a first support rod (8) is fixedly connected to one side of the rotating seat (9), a sliding groove (27) is formed in the circumferential inner wall of the inner protection tube (7), one ends of the first support rod (8) and the second support rod (11) are located inside the sliding groove (27), and a first spring (14) is fixedly connected to the bottom outer wall of the rotating seat (9), and the bottom end of the first spring (14) is fixedly connected to the top of the cross brace plate (15); Docking discs (4) and docking plates (6) for facilitating docking installation are respectively arranged at both ends of the outer protection tube (1); A rotating component for driving the inner protection tube (7) to rotate inside the outer protection tube (1) is arranged inside the docking disc (4).

2. The underground pipeline protection device for cable laying according to claim 1, characterized in that, A clamping hole (20) is formed in the top outer wall of the rectangular part (1002), a clamping column is fixedly connected to the bottom outer wall of the mounting plate (5), and the mounting plate (5) is fixedly connected to the top outer wall of the rectangular part (1002) through the clamping connection between the clamping column and the clamping hole (20).

3. The underground pipeline protection device for cable laying according to claim 1, characterized in that, The bottom outer wall of the fixed plate (2) is fixedly connected with pressure rods (18) distributed at equal intervals. One end of the pressure rod (18) extending into the inner protection tube (7) is fixedly connected with a pressure ball (19). The circumferential outer wall of the pressure ball (19) is in contact with the top of the rotating seat (9). One end of each of the first support rod (8) and the second support rod (11) is provided with a rotating groove, and a roller (28) is rotatably connected in the rotating groove. The circumferential outer wall of the roller (28) is closely attached to the circumferential inner wall of the sliding groove (27).

4. An underground pipeline protection device for cable laying, according to claim 3, characterized in that, The inner protection tube (7) includes a first arc tube portion (7001) and a second arc tube portion (7002), and the thickness of the first arc tube portion (7001) is greater than that of the second arc tube portion (7002).

5. The underground pipeline protection device for cable laying according to claim 4, characterized in that, The rotating assembly includes a gear disk (30) arranged inside the docking disk (4). A round hole is opened in the center of the gear disk (30), and a rotating column (24) is inserted into the round hole. A mating groove (31) is opened on one side of the gear disk (30), and the mating groove (31) communicates with the round hole. A cross plate (25) is fixedly connected to the circumferential outer wall of the rotating column (24), and the cross plate (25) is adapted to the mating groove (31). A tooth fan plate (29) is meshed with the circumferential outer wall of the gear disk (30), and the tooth fan plate (29) is fixedly connected to the outer wall of one end of the inner protection tube (7). An arc groove (32) is opened on the circumferential inner wall of the docking disk (4), and the tooth fan plate (29) passes through the inner wall of the arc groove (32). Through holes (23) are opened on both sides of the docking disk (4), and the rotating column (24) and the cross plate (25) both pass through the inside of the through holes (23).

6. The underground pipeline protection device for cable laying according to claim 5, characterized in that, A stabilizing seat (33) for ensuring the stable rotation of the gear disk (30) is fixedly connected to the circumferential inner wall of the docking disk (4), and the outer walls on both sides of the stabilizing seat (33) are in contact with the outer walls on both sides of the gear disk (30).

7. An underground pipeline protection device for cable laying, according to claim 6, characterized in that, One end of the rotating column (24) is fixedly connected with a rotating block (22), and the diameter of the rotating block (22) is greater than the diameter of the through hole (23).

8. An underground pipeline protection device for cable laying, according to claim 7, characterized in that, One side outer wall of the docking plate (6) is fixedly connected with a threaded cylinder seat (21), and the threaded cylinder seat (21) is fixedly connected to the outer protection tube (1). One end of the rotating column (24) is fixedly connected with a threaded column (26), and the threaded column (26) forms a threaded connection with the threaded cylinder seat (21). The diameter of the threaded column (26) is greater than the length of the cross plate (25).

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