A protective structure for PE pipe welding pipe clamp

Abstract

This invention discloses a protective structure for welded pipe clamps on PE pipes, primarily relating to the field of PE pipe welding repair. It includes fixing frames on both sides of the clamp, with PE pipes connected to both ends of the clamp. The fixing frames have anchoring holes, and multiple protective rods are detachably connected between the two fixing frames. Each protective rod has multiple elastic supports, with an arc-shaped plate at the bottom. Multiple reinforcing rods are provided between adjacent protective rods, and at least one protective rod has multiple laterally extending anchoring rods. The beneficial effects of this invention are: it can effectively protect the welded clamp position, preventing deformation and breakage of the clamp, and ensuring the normal use of the pipeline.

Description

Technical Field

[0001] This invention relates to the field of PE pipe welding repair, specifically a protective structure for welding couplings on PE pipes. Background Technology

[0002] When a section of a PE pipe is damaged and requires repair, pipe clamps are used to weld the broken or damaged area. The structure of the pipe clamps ensures a tight seal at the welded location, effectively preventing leaks during pipeline transport. The simple structure and efficient welding operation make this process more convenient. However, the strength of the pipe clamp is still relatively weak compared to other parts of the PE pipe, especially for pipelines buried underground. The repaired area, after welding with pipe clamps, is prone to breakage again due to geological subsidence or other reasons, requiring repeated repairs. This reduces the effectiveness of the repair, increases costs, and affects the normal use of the pipeline. Summary of the Invention

[0003] The purpose of this invention is to provide a protective structure for welded pipe clamps of PE pipes, which can effectively protect the welded pipe clamp position, prevent deformation and breakage of the pipe clamp position, and ensure the normal use of the pipeline.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] A protective structure for welding couplings to PE pipes includes fixing frames on both sides of the coupling, with PE pipes connected to both ends of the coupling. The fixing frames are located above the PE pipes and have anchoring holes. Multiple protective rods are detachably connected between two fixing frames. The protective rods surround the outside of the coupling and the PE pipes. Each protective rod has multiple elastic frames, and the bottom of each elastic frame has an arc-shaped plate that contacts the surface of the PE pipe. Multiple reinforcing rods are provided between adjacent protective rods. One of the protective rods has a collar. One end of the reinforcing rod has a stop cap that works with the collar, and the other end of the reinforcing rod has a slotted head. Adjacent protective rods have locking sleeves with a communicating slotted hole and a rotating groove. The slotted head passes through the collar and the slotted hole in sequence and then enters the rotating groove. The slotted head is rotatably connected to the rotating groove and has an anti-rotation block that works with the bottom of the rotating groove. At least one of the protective rods has multiple laterally extending anchoring rods.

[0006] Furthermore, the anti-rotation block is square, the bottom of the rotation groove is provided with a positioning groove for inserting into the anti-rotation block, the slotted fixing head is provided with a sliding groove, and the anti-rotation block is slidably connected in the sliding groove.

[0007] Furthermore, the reinforcing rod has a through hole communicating with the slide groove inside, the anti-rotation block has a pull rod, the pull rod is slidably connected in the through hole, the end of the pull rod outside the through hole has a stop block that cooperates with the through hole, and a compression spring is provided between the anti-rotation block and the side wall of the slide groove.

[0008] Furthermore, the elastic frame is symmetrically provided with sliding sleeves, and the arc plate is symmetrically provided with sliding columns. The sliding columns are slidably connected inside the sliding sleeves, and a buffer spring is provided between the sliding columns and the inner wall of the sliding sleeves.

[0009] Furthermore, multiple brackets are fixed on the protective rod, the elastic frame is slidably connected to the brackets, and an adjusting rod is rotatably connected to the brackets. The adjusting rod passes through the elastic frame and is threadedly connected to it.

[0010] Furthermore, there are three protective rods, and the longitudinal sections of the three protective rods form the three vertices of a triangle, with the reinforcing rod located on the two sides of the triangle.

[0011] Furthermore, the protective rod is provided with multiple anchor sleeves through which the anchor rod can pass, one end of the anchor rod is provided with a protrusion that works with the anchor sleeve, and the side wall of the anchor rod is provided with multiple through holes, in which anchor blocks are slidably connected.

[0012] Furthermore, the end of the anchor block located outside the perforation is tapered, and the interior of the anchor rod is provided with a drive groove, and the drive groove is provided with a power rod that simultaneously drives multiple anchor blocks to slide outward through the perforation.

[0013] Furthermore, the power rod is threaded into the drive groove, the movement direction of the power rod is perpendicular to the movement direction of the anchor block, the power rod is provided with multiple cones, the anchor block is provided with a drive inclined surface, the side of the cone is in sliding contact with the drive inclined surface, and a return spring is provided between the anchor block and the side wall of the drive groove.

[0014] Furthermore, the protective rod and the fixing frame are detachably connected by bolts, and the anchor rod extends laterally toward both sides of the protective rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This invention sets up fixing frames on both sides of the pipe clamp, and sets up multiple protective rods between the fixing frames. The protective rods surround the outside of the pipe clamp and the PE pipe, forming a protective barrier for the pipe clamp position, reducing the deformation of the pipe clamp position during geological settlement, and reducing the probability of breakage. At the same time, multiple elastic frames are set on the protective rods, and arc-shaped plates that contact the surface of the PE pipe are set on the elastic frames, so that the pipe clamp and the nearby PE pipe form a whole under stress. When the pipe clamp position is deformed under stress, the nearby PE pipe will be pulled to bend and deform synchronously under the action of the elastic frames, avoiding the settlement of the pipe clamp position bearing the pressure alone, reducing the deformation of the settlement of the pipe clamp position, thereby reducing the probability of pipe clamp breakage. After the settlement of the pipe clamp position is deformed by pressure, the elastic frames will buffer the pressure force and reserve a certain space for pipe deformation, reducing the amplitude of pipe bending deformation, further reducing the probability of breakage near the pipe clamp.

[0017] 2. Multiple reinforcing bars are installed between adjacent protective bars. Since multiple protective bars surround the pipe clamp and PE pipe to form a three-dimensional protective structure, it occupies a large area and is inconvenient to transport and move. Therefore, the connection between the reinforcing bars and protective bars is assembled on site to reduce the space occupied by the components, facilitate the support of multiple sets of components, and facilitate maintenance at multiple locations. During installation, the straight fixing head at one end of the reinforcing bar is passed through the collar and the straight hole in sequence and then inserted into the rotating groove. At this time, the stop cap at the other end of the reinforcing bar contacts the collar to limit the position of the reinforcing bar. Then, the reinforcing bar is rotated so that the straight fixing head rotates in the rotating groove, so that the direction of the straight fixing head is offset from the straight hole, thereby limiting the straight fixing head in the length direction. Then, the anti-rotation block is used to prevent the reinforcing bar from continuing to rotate, thus realizing the rapid installation and connection of the reinforcing bar and the adjacent protective bars. The reinforcing bars are used to reinforce the adjacent protective bars, which greatly enhances the protection strength of the pipe clamp position and improves the protection effect.

[0018] 3. Install multiple horizontally extending anchor rods on at least one protective rod. Use the anchor rods to anchor the protective rods to the soil around the pipeline to fix the position of the protective rod. This reduces the amount of movement and deformation of the protective structure during geological settlement, thereby reducing the relative bending degree of the pipeline inside the protective structure and further improving the protection effect on the pipeline, especially the pipe clamp position. Attached Figure Description

[0019] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Appendix Figure 2 This is a front view of the present invention.

[0021] Appendix Figure 3 This is an appendix to the present invention. Figure 2 A cross-sectional view along the AA direction.

[0022] Appendix Figure 4 This is an appendix to the present invention. Figure 3 Cross-sectional view along the BB direction.

[0023] Appendix Figure 5 This is an appendix to the present invention. Figure 4 A magnified view of part C in the middle.

[0024] Appendix Figure 6 This is an appendix to the present invention. Figure 3 A cross-sectional view along the DD direction.

[0025] Appendix Figure 7 This is an appendix to the present invention. Figure 6 A magnified view of part E in the middle.

[0026] Appendix Figure 8 This is an appendix to the present invention. Figure 3 A magnified view of part F in the middle.

[0027] Appendix Figure 9 This is an appendix to the present invention. Figure 2 A cross-sectional view along the GG direction.

[0028] Appendix Figure 10 This is an appendix to the present invention. Figure 2 A cross-sectional view along the HH direction.

[0029] Appendix Figure 11 This is an appendix to the present invention. Figure 10 A magnified view of part I in the middle.

[0030] The labels shown in the attached diagram:

[0031] 1. Pipe clamp; 2. Fixing bracket; 3. PE pipe; 4. Anchor hole; 5. Protective rod; 6. Elastic frame; 7. Arc plate; 8. Reinforcing rod; 9. Collar; 10. Stop cap; 11. Slotted fixing head; 12. Locking sleeve; 13. Slotted hole; 14. Rotating groove; 15. Anti-rotation block; 16. Anchor rod; 17. Positioning groove; 18. Sliding groove; 19. Through hole; 20. Tie rod; 21. Stop block; 22. Compression spring; 23. Sliding sleeve; 24. Sliding column; 25. Buffer spring; 26. Bracket; 27. Adjusting rod; 28. Anchor sleeve; 29. ​​Protrusion; 30. Perforation; 31. Anchor block; 32. Drive groove; 33. Power rod; 34. Cone; 35. Drive inclined plane; 36. Return spring. Detailed Implementation

[0032] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0033] This invention describes a protective structure for welding a PE pipe clamp 1. The main structure includes fixing frames 2 on both sides of the clamp 1. Both ends of the clamp 1 are connected to PE pipes 3. A heating component is installed inside the clamp 1 to melt the contact area between the clamp and the PE pipe 3, thereby achieving welding of the broken part of the PE pipe. The fixing frames 2 are located above the PE pipes 3 and have anchor holes 4. Anchor bolts pass through the anchor holes 4 and the fixing frames 2 are fixed to the ground where the PE pipe 3 is located, providing support for the protective structure. Multiple protective rods 5 are detachably connected between the two fixing frames 2. The protective rods 5 extend along the length of the PE pipe 3, and the fixing frames 2 extend vertically. This detachable connection reduces the space occupied during transportation and movement, making it easier to move and transport. The protective rods 5 surround the outside of the clamp 1 and the PE pipe 3, forming effective protection for their outer sides. When subjected to geological subsidence, the protective rods 5 will be squeezed first, thus protecting the clamp 1 and PE pipe 3 within the protected area. To enhance protection, the protective rod 5 is equipped with multiple elastic frames 6, and the bottom of each elastic frame 6 is equipped with an arc-shaped plate 7. The arc-shaped plate 7 contacts the surface of the PE pipe 3. This arrangement makes the pipe clamp 1 and PE pipe 3 in the area between the two fixed frames 2 a single force-bearing unit. The pipe clamp 1 and PE pipe 3 in this area can bend upwards in advance within the deformation range. When the pressure is large enough to deform the protective rod 5 and thus the pipe clamp 1, the pipe clamp 1 will move downwards. By pulling the nearby PE pipe 3, the entire area moves downwards. The multiple arc-shaped plates 7 and elastic frames 6 distribute the pressure on the pipe clamp 1 to multiple positions of the PE pipe 3 in this area, thereby reducing the bending deformation of the pipe clamp 1 and reducing the probability of pipe clamp 1 breaking. Furthermore, the elastic frame 6 provides reserved deformation space for the bending of the pipe clamp 1, so that the pipe clamp 1 bends downwards to a certain extent before becoming flush with other pipes, and then bends downwards further before being misaligned with other positions of the pipe. This greatly reduces the degree of bending of the pipe clamp 1 when the geological settlement is the same distance, thus reducing the probability of pipe clamp 1 breaking.

[0034] Multiple reinforcing rods 8 are provided between adjacent protective rods 5. The length direction of the reinforcing rods 8 is staggered with that of the protective rods 5, thereby providing vertical support for the protective rods 5 and improving their protective strength. A collar 9 is welded or bolted to one of the protective rods 5. A stop cap 10 for use with the collar 9 is integrally formed or welded to one end of the reinforcing rod 8. The vertical drop of the stop cap 10 is greater than the inner diameter of the sleeve 9, thereby limiting the end of the reinforcing rod 8. A slotted head 11 is welded or integrally formed to the other end of the reinforcing rod 8. Adjacent protective rods 5 are welded or bolted to... A locking sleeve 12 is fixed, and the locking sleeve 12 has a through hole 13 and a rotating groove 14. The through hole 13 penetrates the surface of the locking sleeve 12. The fixing head 11 passes through the collar 9 and the through hole 13 in sequence and enters the rotating groove 14. The fixing head 11 is rotatably connected in the rotating groove 14. The fixing head 11 is provided with an anti-rotation block 15 that cooperates with the bottom of the rotating groove 14. This arrangement allows the reinforcing rod 8 and the protective rod 5 to be installed and connected on site. Since the two form a three-dimensional protective structure, they occupy a large space and are inconvenient to transport and move. The method of separating and assembling the two parts on-site can greatly save space and facilitate movement and transportation. During installation, the straight fixing head 11 at one end of the reinforcing rod 8 is passed through the collar 9 and the straight hole 13 in sequence and then inserted into the rotating groove 14. At this time, the stop cap 10 at the other end of the reinforcing rod 8 contacts the collar 9 to limit the position of the reinforcing rod 8. Then, the reinforcing rod 8 is rotated to make the straight fixing head 11 rotate in the rotating groove 14, so that the direction of the straight fixing head 11 is offset from the straight hole 13, thereby limiting the straight fixing head 11 in the length direction. Then, the anti-rotation block 15 cooperates with the rotating groove 14. To prevent the reinforcing rod 8 from continuing to rotate, the reinforcing rod 8 and the adjacent protective rod 5 are quickly installed and connected. The reinforcing rod 8 is used to reinforce the adjacent protective rod 5, which greatly enhances the protection strength of the pipe clamp 1 and improves the protection effect. At least one of the protective rods 5 is provided with multiple horizontally extending anchor rods 16. The anchor rods 16 are used to anchor the protective rod 5 to the soil around the pipeline, so as to reduce the amount of movement and deformation of the protective structure during geological settlement, thereby reducing the relative bending degree of the pipeline inside the protective structure and further improving the protection effect of the pipeline, especially the pipe clamp 1.

[0035] Preferably, the anti-rotation block 15 is square, and the bottom of the rotating groove 14 is provided with a positioning groove 17 that is inserted into the anti-rotation block 15. The positioning groove 17 is square and cooperates with the anti-rotation block 15. The straight fixing head 11 is provided with a sliding groove 18, and the anti-rotation block 15 is slidably connected in the sliding groove 18. By sliding the anti-rotation block 15, it is made to enter the positioning groove 17 of the rotating groove 14, thereby using the anti-rotation block 15 to realize the connection between the straight fixing head 11 and the bottom of the rotating groove 14, thereby preventing the straight fixing head 11 from continuing to rotate, so that the straight fixing head 11 is kept in a misaligned state with the straight hole 13, ensuring the limiting effect on the reinforcing rod 8. The structure is simple, the operation is convenient, and the effect of preventing the reinforcing rod 8 from rotating is better.

[0036] Preferably, the reinforcing rod 8 has a through hole 19 communicating with the slide groove 18, extending to the other end of the reinforcing rod 8. A pull rod 20 is welded or integrally formed on the anti-rotation block 15, and the pull rod 20 is slidably connected in the through hole 19. A stop block 21 for use with the through hole 19 is welded or integrally formed at the end of the pull rod 20 outside the through hole 19. A compression spring 22 is provided between the anti-rotation block 15 and the side wall of the slide groove 18. This arrangement allows the stop block 21 to be pulled outward before rotating the reinforcing rod 8, so that the anti-rotation block 15 is slid and hidden in the slide groove 18 under the connection of the pull rod 20. At this time, the compression spring 22 is compressed, and the reinforcing rod 8 rotates to ensure the smooth rotation of the reinforcing rod 8 during the misalignment of the slotted head 11 and the slotted hole 13. After misalignment, the stop block 21 is released, and the anti-rotation block 15 slides towards the outside of the slide groove 18 under the action of the compression spring 22 and enters the positioning groove 17. The square edge keeps the slotted head 11 in a misaligned state with the slotted hole 13, thereby quickly realizing the installation and connection of the reinforcing rod 8. The structure is simple and the operation steps are very simplified, which greatly improves the installation efficiency. When disassembling, you only need to pull the stop block 21 to rotate the reinforcing rod 8 in the opposite direction, which greatly improves the convenience of disassembly and assembly.

[0037] Preferably, the elastic frame 6 is symmetrically welded or bolted with sliding sleeves 23, and the arc plate 7 is symmetrically welded or bolted with sliding columns 24. The sliding columns 24 are slidably connected inside the sliding sleeves 23. A buffer spring 25 is provided between the sliding column 24 and the inner wall of the sliding sleeve 23. This arrangement utilizes the compression of the buffer spring 25 by the sliding column 24 when it slides inside the sliding sleeve 23 to achieve a buffering effect, thereby reducing the degree of bending deformation of the pipe clamp 1 caused by geological settlement pressure.

[0038] Preferably, the protective rod 5 is welded or bolted with multiple brackets 26, the elastic frame 6 is slidably connected to the brackets 26, and the brackets 26 are rotatably connected to the adjusting rod 27 through bearings. The adjusting rod 27 passes through the elastic frame 6 and is threadedly connected to it. This arrangement allows the distance between the elastic frame 6 and the brackets 26 to change after the elastic frame 6 slides relative to the brackets 26 by rotating the adjusting rod 27. This ensures that the arc plate 7 on the elastic frame 6 can contact the surface of the PE pipe 3 when protecting pipes of different sizes, thus improving the applicability of the protective structure.

[0039] Preferably, there are three protective rods 5, and the longitudinal sections of the three protective rods 5 form the three vertices of a triangle. The reinforcing rods 8 are located on the two sides of the triangle. This structure makes the multiple reinforcing rods 8 form a triangular support structure, which makes the support structure more robust and less prone to deformation when subjected to pressure, thereby improving the reinforcement effect of the protective rods 5 and further improving the compressive strength and protective effect of the protective rods 5.

[0040] Preferably, the protective rod 5 is welded or bolted with multiple anchor sleeves 28 through which the anchor rod 16 can pass. One end of the anchor rod 16 is provided with a protrusion 29 that cooperates with the anchor sleeve 28. The diameter of the protrusion 29 is larger than the inner diameter of the anchor sleeve 28. The side wall of the anchor rod 16 is provided with multiple through holes 30. Anchor blocks 31 are slidably connected in the through holes 30. In use, the anchor rod 16 is fixed in the soil where the pipe is located after passing through the anchor sleeve 28, so as to anchor the protective rod 5. At the same time, the anchor block 31 passes through the through hole 20 and extends out of the anchor rod 16 into the surrounding soil, so that the anchor rod 16 is not easy to move in the soil, further improving the anchoring firmness.

[0041] Preferably, the end of the anchor block 31 located outside the perforation 30 is tapered, making it easier for the anchor block 31 to enter the surrounding soil. The anchor rod 16 is provided with a drive groove 32 inside, and a power rod 33 is provided in the drive groove 32 to simultaneously drive multiple anchor blocks 31 to slide outward through the perforation 30. The power rod 33 is used to simultaneously drive multiple anchor blocks 31 into the soil to form more anchoring points, reduce the convenience of controlling the sliding of the anchor block 31, and improve the efficiency of the anchoring operation.

[0042] Preferably, the power rod 33 is threaded into the drive groove 32. Specifically, a support block is provided in the drive groove 32, and the power rod 33 is threadedly connected to the support block. The moving direction of the power rod 33 is perpendicular to the moving direction of the anchor block 31. Multiple cones 34 are welded or integrally formed on the power rod 33, and the sides of the cones 34 are inclined. The anchor block 31 is provided with a driving inclined surface 35, and the sides of the cones 34 slide in contact with the driving inclined surface 35. A return spring 36 is provided between the anchor block 31 and the side wall of the drive groove 32. This arrangement provides a return spring 36 when the power rod 33 is rotated, which helps to prevent the power rod 33 from rotating due to the threaded connection. The downward movement causes multiple cones 34 to rotate and advance simultaneously. Under the connection of the driving inclined plane 35, the anchor blocks 31 slide outward simultaneously, realizing the synchronous driving of multiple anchor blocks 31. The structure is simple. Preferably, a cross groove can be set at the end of the power rod 33 to facilitate the rotation of the power rod 33 with tools such as electric drills. When the anchor blocks 31 slide outward, they compress the return spring 36. When it is necessary to disassemble the anchor rod 16, the power rod 33 is rotated in the opposite direction. Under the action of the return spring 36, the anchor blocks 31 slide in the opposite direction and enter the interior of the anchor rod 16, making the anchor rod 16 easier to pull out and improving the firmness and ease of disassembly and assembly of the anchor rod 16.

[0043] Preferably, the protective rod 5 and the fixing frame 2 are detachably connected by bolts, which is simple in structure and more convenient to install. The anchor rod 16 extends laterally towards both sides of the protective rod 5 to simultaneously anchor both sides of the protective rod 5, making the position of the protective rod 5 more secure and the protective effect more stable.

[0044] Working Principle: This invention features fixing frames 2 on both sides of the pipe clamp 1, with multiple protective rods 5 positioned between the fixing frames 2. The protective rods 5 surround the outside of the pipe clamp 1 and the PE pipe 3, providing protection for the pipe clamp 1 and reducing deformation during geological settlement, thus lowering the probability of breakage. Simultaneously, multiple elastic frames 6 are installed on the protective rods 5, with arc-shaped plates 7 on the elastic frames 6 that contact the surface of the PE pipe 3. This creates a unified force-bearing structure between the pipe clamp 1 and the nearby PE pipe 3. When the pipe clamp 1 deforms under stress, the elastic frames 6 pull on the nearby PE pipe 3, causing it to bend and deform synchronously. To prevent the settled pipe clamp 1 from bearing pressure alone, the deformation at the settled pipe clamp 1 location is reduced, thereby lowering the probability of pipe clamp 1 breakage. Furthermore, after the settled pipe clamp 1 is deformed by pressure, the elastic frame 6 buffers the pressure force, providing space for pipe deformation and reducing the amplitude of pipe bending deformation, further reducing the probability of breakage near pipe clamp 1. Multiple reinforcing rods 8 are installed between adjacent protective rods 5. Since the multiple protective rods 5 form a three-dimensional protective structure around the pipe clamp 1 and PE pipe 3, it occupies a large area and is inconvenient to transport and move. Therefore, the reinforcing rods 8... The connection with the guard rod 5 is assembled on-site, reducing the space occupied by the components and facilitating the support of multiple components for maintenance at multiple locations. During installation, the slotted head 11 at one end of the reinforcing rod 8 is passed through the collar 9 and the slotted hole 13 in sequence and then inserted into the rotating groove 14. At this time, the stop cap 10 at the other end of the reinforcing rod 8 contacts the collar 9 to limit the position of the reinforcing rod 8. Then, the reinforcing rod 8 is rotated so that the slotted head 11 rotates in the rotating groove 14, so that the direction of the slotted head 11 is offset from the slotted hole 13, thereby limiting the length of the slotted head 11. Then, the anti-rotation block 15 is used to connect with the rotating rod. The cooperation of the moving groove 14 prevents the reinforcing rod 8 from continuing to rotate, thereby realizing the rapid installation and connection of the reinforcing rod 8 and the adjacent protective rod 5. The reinforcing rod 8 is used to reinforce the adjacent protective rod 5, which greatly enhances the protection strength of the pipe clamp 1 position and improves the protection effect. Multiple horizontally extending anchor rods 16 are set on at least one protective rod 5. The anchor rods 16 are used to fix the position of the protective rod 5 by anchoring with the soil around the pipeline. This reduces the amount of movement and deformation of the protective structure during geological settlement, thereby reducing the relative bending degree of the pipeline inside the protective structure and further improving the protection effect of the pipeline, especially the pipe clamp 1 position.

Claims

1. A protective structure for welding a pipe collar of a PE pipe, comprising a fixing frame (2) arranged on both sides of the pipe collar (1), both ends of the pipe collar (1) being communicated with a PE pipeline (3), the fixing frame (2) being located above the PE pipeline (3), the fixing frame (2) being provided with an anchoring hole (4), a plurality of protective rods (5) being detachably connected between the two fixing frames (2), the protective rods (5) being wrapped around the outside of the pipe collar (1) and the PE pipeline (3), characterized in that: The protection rod (5) is provided with a plurality of elastic frames (6), the bottom of the elastic frame (6) is provided with an arc-shaped plate (7), the arc-shaped plate (7) is in contact with the surface of the PE pipe (3), a plurality of reinforcing rods (8) are arranged between adjacent protection rods (5), one of the protection rods (5) is provided with a sleeve ring (9), one end of the reinforcing rod (8) is provided with a cap (10) matched with the sleeve ring (9), the other end of the reinforcing rod (8) is provided with a one-word fixing head (11), the adjacent protection rods (5) are provided with a lock sleeve (12), the lock sleeve (12) is provided with a one-word hole (13) and a rotating groove (14) in communication, the one-word fixing head (11) passes through the sleeve ring (9) and the one-word hole (13) in sequence and then enters the rotating groove (14), the one-word fixing head (11) is rotatably connected in the rotating groove (14), the one-word fixing head (11) is provided with an anti-rotation block (15) matched with the bottom of the rotating groove (14), at least one of the protection rods (5) is provided with a plurality of anchor rods (16) extending transversely.

2. The protective structure for welding a pipe collar to a PE pipe according to claim 1, characterized in that: The anti-rotation block (15) is square, the bottom of the rotating groove (14) is provided with a positioning groove (17) matched with the anti-rotation block (15), the one-word fixing head (11) is provided with a sliding groove (18), and the anti-rotation block (15) is slidably connected in the sliding groove (18).

3. The protective structure for welding a pipe collar to a PE pipe according to claim 2, characterized in that: The reinforcing rod (8) is provided with a through hole (19) in communication with the sliding groove (18), the anti-rotation block (15) is provided with a pull rod (20), the pull rod (20) is slidably connected in the through hole (19), and the end of the pull rod (20) located outside the through hole (19) is provided with a stop block (21) matched with the through hole (19). The anti-rotation block (15) and the side wall of the sliding groove (18) are provided with a compression spring (22).

4. The protective structure for welding a collar on a PE pipe according to claim 1, characterized in that: The elastic frame (6) is provided with a sliding sleeve (23) symmetrically, the arc-shaped plate (7) is provided with a sliding column (24) symmetrically, the sliding column (24) is slidably connected in the sliding sleeve (23), and the sliding column (24) and the inner wall of the sliding sleeve (23) are provided with a buffer spring (25).

5. The protective structure for welding a collar on a PE pipe according to claim 1, characterized in that: A plurality of supports (26) are fixed on the protection rod (5), the elastic frame (6) is slidably connected on the support (26), the support (26) is rotatably connected with an adjusting rod (27), the adjusting rod (27) penetrates through the elastic frame (6) and is threadedly connected with the elastic frame (6).

6. The protective structure for welding a collar on a PE pipe according to claim 1, characterized in that: The protection rod (5) is three, and the longitudinal sections of the three protection rods (5) form three vertices of a triangle, and the reinforcing rods (8) are located on two sides of the triangle.

7. The protective structure for welding a collar on a PE pipe according to claim 1, characterized in that: The protection rod (5) is provided with a plurality of anchor sleeves (28) through which the anchor rod (16) passes, one end of the anchor rod (16) is provided with a protruding block (29) matched with the anchor sleeve (28), a plurality of perforations (30) are formed in the side wall of the anchor rod (16), and an anchor block (31) is slidably connected in the perforation (30).

8. The protective structure for welding a collar to a PE pipe according to claim 7, characterized in that: The anchor block (31) is tapered at the end outside the perforation (30), the inside of the anchor rod (16) is provided with a driving groove (32), the driving groove (32) is provided with a power rod (33) for simultaneously driving multiple anchor blocks (31) to slide outward through the perforation (30).

9. The protective structure for welding a collar to a PE pipe according to claim 8, wherein: The power rod (33) is threadedly connected in the driving groove (32), the moving direction of the power rod (33) is perpendicular to the moving direction of the anchor block (31), the power rod (33) is provided with multiple cones (34), the anchor block (31) is provided with a driving slope (35), the side surface of the cone (34) is in sliding contact with the driving slope (35), and the anchor block (31) and the side wall of the driving groove (32) are provided with a reset spring (36).

10. The protective structure for welding a collar to a PE pipe according to claim 1, wherein: The protection rod (5) and the fixed frame (2) are detachably connected through bolts, and the anchor rod (16) extends along the transverse direction to the two sides of the protection rod (5).

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