Underground pipeline protection device for cable laying

Abstract

The invention discloses an underground pipeline protection device for cable laying, and relates to the technical field of underground pipeline protection, the underground pipeline protection device comprises an outer protection pipe, an inner protection pipe for performing secondary protection on a cable body is arranged in the outer protection pipe, and the circumferential outer wall of the inner protection pipe is in contact with the circumferential inner wall of the outer protection pipe; the outer protection pipe comprises a circular ring part and a rectangular part, and the top of the rectangular part and the circumferential outer wall of the inner protection pipe are each provided with a feeding groove facilitating installation of a cable body; a reinforcing assembly used for improving the strength of the outer protection pipe is arranged at the top of the rectangular part. According to the cable protection device, the relative position between the inner protection pipe and the outer protection pipe is fixed, a cable body placed in the inner protection pipe can be better protected, the inner protection pipe and the outer protection pipe form a relatively closed space, the direct effect of external pressure on the cable body is reduced, the cable body is prevented from being damaged, and the service life of the cable body is prolonged. And the protection capability of the cable body is enhanced.

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, most of them will be equipped with pipeline protection devices 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 consists of 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 provided on the side wall of the reinforcement pipe body, and the maintenance opening is arranged along the length direction of the reinforcement pipe body and communicates with the inside of the inner protection pipe. An abutting 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 abutting 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 withstand 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 provides an underground pipeline protection device for cable laying to overcome the above technical problems existing in the prior related technologies.

[0006] The technical solution of the present invention is realized as follows: An underground pipeline protection device for cable laying includes an outer protection pipe. An inner protection pipe for secondary protection of the cable body is arranged inside the outer protection pipe, and the circumferential outer wall of the inner protection pipe is in contact with the circumferential inner wall of the outer protection pipe; The outer protection tube includes an annular part and a rectangular part. Feed grooves for facilitating the installation of cable bodies are provided on the top of the rectangular part and the circumferential outer wall of the inner protection tube. A strengthening component for enhancing the strength of the outer protection tube is arranged on the top of the rectangular part. A lateral support component is arranged inside the inner protection tube. Docking plates and docking boards for facilitating docking installation are respectively arranged at both ends of the outer protection tube. A rotating component for driving the inner protection tube to rotate inside the outer protection tube is arranged inside the docking plate.

[0007] 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. Equally spaced circularly distributed partition plates are fixedly connected to the circumferential inner wall of the inner ring frame. 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. The bottom end of the second spring is fixedly connected to a mounting plate.

[0008] Further, a clamping hole is provided on the top outer wall of the rectangular part. 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 part through the clamping connection between the clamping column and the clamping hole.

[0009] Further, the lateral support component includes a cross support plate fixedly connected to the circumferential inner wall of the inner protection tube. A guiding column is inserted into the top of the cross support plate. Rotating seats and limiting caps are respectively fixedly connected to both ends of the guiding column. Rotating shafts are rotatably connected to both inner side walls of the rotating seat. Second support rods are fixedly connected to the circumferential outer walls 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 protection 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. The bottom end of the first spring is fixedly connected to the top of the cross support plate.

[0010] Further, equally spaced pressing rods are fixedly connected to the bottom outer wall of the fixing plate. A pressing ball is fixedly connected to the end of the pressing rod extending into the inner protection tube. The circumferential outer wall of the pressing 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. Rollers are rotatably connected inside the rotating grooves. The circumferential outer walls of the rollers are closely attached to the circumferential inner wall of the sliding groove.

[0011] Further, the inner protection tube includes a first arc-shaped tube part and a second arc-shaped tube part. The thickness of the first arc-shaped tube part is greater than that of the second arc-shaped tube part.

[0012] 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. A rotating column is inserted into the circular hole. A mating groove is formed on one side of the gear disk. The mating groove communicates with the circular hole. A cross plate is fixedly connected to the circumferential outer wall of the rotating column. The cross plate is adapted to the mating groove. A toothed fan plate meshes with the circumferential outer wall of the gear disk. The toothed 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. The toothed fan plate passes through the inner wall of the arc-shaped groove. Through holes are formed on both sides of the docking disk. The rotating column and the cross plate both pass through the inside of the through holes.

[0013] 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. The outer walls on both sides of the stabilizing seat are in contact with the outer walls on both sides of the gear disk.

[0014] Furthermore, a rotating block is fixedly connected to one end of the rotating column. The diameter of the rotating block is larger than the diameter of the through hole.

[0015] Furthermore, a threaded barrel seat is fixedly connected to the outer wall of one side of the docking plate. The threaded barrel seat is fixedly connected to the outer protection tube. A threaded column is fixedly connected to one end of the rotating column. The threaded column forms a threaded connection with the threaded barrel seat. The diameter of the threaded column is larger than the length of the cross plate.

[0016] Advantages of the present invention: 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.

[0017] 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.

[0018] 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 under normal conditions 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, causing the rotating seat to 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 to 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

[0019] 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 for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic front view structure diagram of the whole of the present invention.

[0021] Figure 2 For the present invention Figure 1 It is an enlarged schematic structure diagram of part A in the present invention.

[0022] Figure 3 It is a schematic end view structure diagram after the cable body of the present invention is laid.

[0023] Figure 4 It is a schematic end view structure diagram of the whole after the strengthening component is installed in the present invention.

[0024] Figure 5 It is a schematic top view structure diagram of the outer protection tube of the present invention.

[0025] Figure 6 It is a schematic structure diagram of the threaded barrel seat of the present invention.

[0026] Figure 7 It is a schematic structure diagram of the end of the docking plate of the present invention.

[0027] Figure 8 For the present invention Figure 7 It is an enlarged schematic structure diagram of part B in the present invention.

[0028] Figure 9 This is a schematic cross-sectional view of the end face of the outer protection tube of the present invention.

[0029] Figure 10 For the present invention Figure 9 An enlarged schematic structural view of the C position in the present invention.

[0030] Figure 11 This is a schematic structural view of the inner protection tube of the present invention.

[0031] Figure 12 For the present invention Figure 11 An enlarged schematic structural view of the D position in the present invention.

[0032] Figure 13 This is a schematic cross-sectional view of the docking plate in the present invention.

[0033] In the figure: 1. Outer protection tube; 1001. Circular ring part; 1002. Rectangular part; 2. Fixed plate; 3. Reinforcement component; 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 wire 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 disk; 31. Fitting groove; 32. Arc-shaped groove; 33. Stable seat. Detailed implementation manners

[0034] 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 in 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.

[0035] Please refer to Figures 1 - 13 , a cable line laying underground pipeline protection device, including an outer protection tube 1, and an inner protection tube 7 for secondary protection of the cable wire 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 conveniently installing the cable wire body 16 are opened on the top of the rectangular part 1002 and the circumferential outer wall of the inner protection tube 7; A reinforcing component 3 for enhancing the strength of the outer protection tube 1 is provided at the top of the rectangular part 1002; A lateral support component is provided inside the inner protection tube 7; Docking plates 4 and docking boards 6 for facilitating docking and installation are respectively provided 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 provided inside the docking plate 4. 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 is closely attached to 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 plate 4 and the docking board 6 facilitate the connection and assembly between multiple protection devices, realizing the paving protection of long-distance cable wires. The feeding groove provides a convenient channel for the placement of the cable wire body 16. The reinforcing 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.

[0036] Preferably, the reinforcing component 3 includes a support frame 3001, an inner ring frame 3002, and a partition plate 3003. The bottom of the reinforcing component 3 is fixedly connected to a fixing plate 2. 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. The circumferential inner wall of the inner ring frame 3002 is fixedly connected with partition plates 3003 distributed in a circular shape at equal distances. The cross-section of the partition plate 3003 is an isosceles triangle. The bottom outer wall of the fixing plate 2 is fixedly connected to a second spring 17. The bottom end of the second spring 17 is fixedly connected to a mounting plate 5. In the reinforcing 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 reinforcing 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 under pressure, playing a buffering role and reducing the impact received by the outer protection tube 1.

[0037] Preferably, 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. 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. Through the clamping structure between the clamping column and the clamping hole 20, the mounting plate 5 can be quickly and firmly installed on the top of the rectangular part 1002 of the outer protection tube 1, which not only facilitates the installation and disassembly of the reinforcing component 3 but also plays a sealing and supporting role for the top of the outer protection tube 1, further enhancing the overall strength and stability of the outer protection tube 1.

[0038] Preferably, the lateral support assembly includes a cross brace 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 brace plate 15. Rotating seats 9 and limit caps 13 are fixedly connected to the two ends of the guide post 12 respectively. Rotating shafts 10 are rotatably connected to the inner side walls of both sides of the rotating seat 9. Second support rods 11 are fixedly connected to the outer circumferential walls of the rotating shafts 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 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 outer bottom wall of the rotating seat 9. The bottom end of the first spring 14 is fixedly connected to the top of the cross brace 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 brace 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.

[0039] Preferably, equally spaced pressure rods 18 are fixedly connected to the outer bottom wall of the fixed plate 2. The ends of the pressure rods 18 extending into the inner protection tube 7 are fixedly connected with pressure balls 19. The outer circumferential wall of the pressure ball 19 is in contact with the top of the rotating seat 9. Rotating grooves are formed 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 assembly 3 drives the pressure rods 18 and the pressure balls 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 and form a triangular support structure, enhancing the vertical support capacity of the inner protection tube 7 and the outer protection tube 1.

[0040] Preferably, the inner protection 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 protection tube 7 and 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 bear greater pressure and enhance the protection ability of the key part of the inner protection tube 7. And the relatively thin second arc-shaped tube portion 7002 can provide a larger placement space for the cable wire body 16, avoiding the situation where they are piled up together and the heat cannot be dissipated quickly.

[0041] Preferably, the rotating assembly includes a gear disk 30 disposed inside the docking disk 4. A circular hole is formed in the center of the gear disk 30, and a rotating column 24 is inserted into the circular hole. A mating groove 31 is formed on one side of the gear disk 30, and the mating groove 31 communicates with the circular 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 meshes 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-shaped groove 32 is formed in the circumferential inner wall of the docking disk 4, and the tooth fan plate 29 passes through the inner wall of the arc-shaped groove 32. Through holes 23 are formed 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. Rotating the rotating block 22 drives the rotating column 24 to rotate. The cross plate 25 on the rotating column 24 interacts with the mating groove 31 of the gear disk 30 to make the gear disk 30 rotate. At the same time, the gear disk 30 meshes with the tooth fan plate 29 to drive the tooth fan plate 29 to rotate, thereby enabling the inner protection tube 7 fixed on the tooth fan plate 29 to rotate inside the outer protection tube 1. The arc-shaped groove 32 provides guidance and limitation for the rotation of the tooth fan plate 29, and the through holes 23 facilitate the passing of the rotating column 24 and the cross plate 25, realizing the function of the rotating assembly.

[0042] Preferably, 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. 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. The stabilizing seat 33 contacts the two sides of the gear disk 30, restricting the shaking and offset of the gear disk 30 during rotation, ensuring that the gear disk 30 can rotate stably and smoothly, enabling the rotating assembly to reliably drive the inner protection tube 7 to rotate, and realizing the precise adjustment of the relative position between the inner protection tube 7 and the outer protection tube 1.

[0043] Preferably, a rotating block 22 is fixedly connected to one end of the rotating column 24. The diameter of the rotating block 22 is larger than the diameter of the through hole 23. Its diameter being larger than the diameter of the through hole 23 can prevent the rotating column 24 from disengaging from the through hole 23 of the docking disk 4, ensuring the integrity and stability of the structure of the rotating assembly, and ensuring that the rotating column 24 can reliably drive the gear disk 30 to rotate.

[0044] Preferably, a threaded cylinder seat 21 is fixedly connected to the outer wall of one side of the docking plate 6, and the threaded cylinder seat 21 is fixedly connected to the outer protection tube 1. A threaded column 26 is fixedly connected to one end of the rotating column 24, and the threaded column 26 forms a threaded connection with the threaded cylinder seat 21. The diameter of the threaded column 26 is larger 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 to the threaded cylinder seat 21 to realize the self-locking function of the rotating assembly, preventing the inner protection tube 7 from rotating randomly during use. At the same time, the threaded cylinder seat 21 is fixed on the docking plate 6 of the outer protection tube 1, enhancing the firmness of the connection between the docking disk 4 and the docking plate 6, and improving the stability of the connection of the entire protection device.

[0045] 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 plates 4 at both ends of the plurality of outer protection tubes 1 are fixedly connected to the docking plates 6 through fixing bolts to complete the assembly work of the plurality of 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. The rotating block 22 can drive the rotating column 24 to rotate together. At the same time, a cross plate 25 is fixedly connected to the circumferential outer wall of the rotating column 24, and the cross plate 25 cooperates with the cooperation groove 31. Therefore, during the rotation of the rotating column 24, the gear disk 30 can be driven to rotate together. When the gear disk 30 receives a rotating force, it can drive the tooth fan plate 29 meshing with it to rotate together, and the tooth fan plate 29 is fixedly connected to the end of the inner protection tube 7. Thus, the circumferential movement of the tooth 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, which can 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 and preventing the cable wire body 16 from being damaged, 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 closely 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; 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 realized, further ensuring the stability of the inner protection tube 7 inside the outer protection tube 1. Moreover, the threaded cylinder seat 21 is fixedly connected to the docking plate 6, thereby also playing a role in strengthening the connection between the docking plate 4 and the docking plate 6; 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; The first support rod 8 and the second support rod 11 arranged inside the inner protective 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 protective tube 1 is subjected to instantaneous pressure from the outside other than the soil (such as vehicle driving, etc.), the second spring 17 at the bottom of the fixed plate 2 can play a good buffering effect to avoid the situation where the outer protective tube 1 is damaged due to excessive instantaneous pressure. At the same time, during the process of the second spring 17 being compressed by pressure, the fixed plate 2 will drive the pressure rod 18 to drop as a whole. When the pressure rod 18 drops, the pressure ball 19 at its end can act on the rotating seat 9, so that the rotating seat 9 is subjected to downward pressure. When the rotating seat 9 is subjected to instantaneous downward pressure, it will immediately drop. At this time, the first support rod 8 and the second support rod 11 will slide to the other end of the slide groove 27, thereby forming a triangular support structure to vertically support the inner protective tube 7 and the outer protective tube 1, so that when the entire lateral support assembly is subjected to instantaneous pressure, the vertical support effect is improved by sacrificing the lateral support force for a short time, further ensuring the stability of the outer protective tube 1 and the inner protective tube 7 when they are under pressure.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground pipeline protection device for cable laying, comprising an outer protective pipe (1), characterized in that: An inner protective tube (7) for providing secondary protection to the cable body (16) is arranged inside the outer protective tube (1), and the circumferential outer wall of the inner protective tube (7) is in contact with the circumferential inner wall of the outer protective tube (1); The outer protective tube (1) comprises a circular ring portion (1001) and a rectangular portion (1002), and a feed groove for facilitating installation of a cable body (16) is provided on the top of the rectangular portion (1002) and the circumferential outer wall of the inner protective tube (7); A reinforcing component (3) for increasing the strength of the outer protective tube (1) is provided at the top of the rectangular portion (1002); A lateral support assembly is arranged inside the inner protective tube (7); Both ends of the outer protective tube (1) are respectively provided with a docking plate (4) and a docking plate (6) for convenient docking installation; A rotating assembly is arranged inside the docking plate (4) and is used to drive the inner protective tube (7) to rotate inside the outer protective tube (1).

2. The underground pipeline protection device for cable laying according to claim 1 is characterized in that: The reinforcing component (3) comprises a support frame (3001), an inner ring frame (3002) and a partition plate (3003); the bottom of the reinforcing component (3) is fixedly connected to a fixed plate (2); a plurality of support frames (3001) form a honeycomb structure on the top of the fixed plate (2); the inner ring frame (3002) is fixedly connected to the support frame (3001); the inner circumferential wall of the inner ring frame (3002) is fixedly connected to partition plates (3003) distributed in a circular shape at equal distances; the cross section of the partition plates (3003) is an isosceles triangle; the bottom outer wall of the fixed plate (2) is fixedly connected to a second spring (17); the bottom end of the second spring (17) is fixedly connected to a mounting plate (5).

3. The underground pipeline protection device for cable laying according to claim 2 is characterized in that: A clamping hole (20) is provided on the top outer wall of the rectangular portion (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 portion (1002) by clamping the clamping column and the clamping hole (20).

4. The underground pipeline protection device for cable laying according to claim 3 is characterized in that: The lateral support assembly comprises a cross brace (15) fixedly connected to the circumferential inner wall of the inner protective tube (7); a guide column (12) is inserted at the top of the cross brace (15); two ends of the guide column (12) are respectively fixedly connected to a rotating seat (9) and a limiting cap (13); the inner walls on both sides of the rotating seat (9) are rotatably connected to a rotating shaft (10); the circumferential outer wall of the rotating shaft (10) is fixedly connected to a second support rod (11); one side of the rotating seat (9) is fixedly connected to a first support rod (8); a sliding groove (27) is provided on the circumferential inner wall of the inner protective tube (7); one end 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); and the bottom end of the first spring (14) is fixedly connected to the top of the cross brace (15).

5. The underground pipeline protection device for cable laying according to claim 4 is characterized in that: The bottom outer wall of the fixed plate (2) is fixedly connected to pressure rods (18) distributed at equal distances, and one end of the pressure rod (18) extending to the inside of the inner protective tube (7) is fixedly connected to a pressure ball (19), and the circumferential outer wall of the pressure ball (19) contacts the top of the rotating seat (9), and one end of the first support rod (8) and the second support rod (11) are both provided with a rotating groove, and a roller (28) is rotatably connected in the rotating groove, and the circumferential outer wall of the roller (28) is tightly attached to the circumferential inner wall of the sliding groove (27).

6. The underground pipeline protection device for cable laying according to claim 5, characterized in that: The inner protective tube (7) comprises a first arc-shaped tube portion (7001) and a second arc-shaped tube portion (7002), and the thickness of the first arc-shaped tube portion (7001) is greater than the thickness of the second arc-shaped tube portion (7002).

7. The underground pipeline protection device for cable laying according to claim 6, characterized in that: The rotating assembly comprises a gear plate (30) arranged inside the docking plate (4), a circular hole being provided at the center of the gear plate (30), a rotating column (24) being inserted into the circular hole, a matching groove (31) being provided on one side of the gear plate (30), the matching groove (31) being communicated with the circular hole, a cross plate (25) being fixedly connected to the circumferential outer wall of the rotating column (24), the cross plate (25) being adapted to the matching groove (31), a toothed sector plate (29) being meshed on the circumferential outer wall of the gear plate (30), the toothed sector plate (29) being fixedly connected to the outer wall of one end of the inner protective tube (7), an arc-shaped groove (32) being provided on the circumferential inner wall of the docking plate (4), the toothed sector plate (29) passing through the inner wall of the arc-shaped groove (32), through holes (23) being provided on both sides of the docking plate (4), the rotating column (24) and the cross plate (25) both passing through the inside of the through holes (23).

8. The underground pipeline protection device for cable laying according to claim 7, characterized in that: A stabilizing seat (33) is fixedly connected to the circumferential inner wall of the docking plate (4) to ensure stable rotation of the gear plate (30), and outer walls on both sides of the stabilizing seat (33) are in contact with outer walls on both sides of the gear plate (30).

9. The underground pipeline protection device for cable laying according to claim 8, characterized in that: One end of the rotating column (24) is fixedly connected to a rotating block (22), and the diameter of the rotating block (22) is greater than the diameter of the through hole (23).

10. An underground pipeline protection device for cable laying according to claim 9, characterized in that: A threaded barrel seat (21) is fixedly connected to an outer wall of one side of the docking plate (6), and the threaded barrel seat (21) is fixedly connected to the outer protective tube (1). One end of the rotating column (24) is fixedly connected to a threaded column (26), and the threaded column (26) is threadedly connected to the threaded barrel seat (21), and the diameter of the threaded column (26) is greater than the length of the cross plate (25).

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