A plastic pipe rounding support device

Abstract

The application discloses a kind of plastic pipeline complex round supporting device, it is related to pipeline repair technical field, including tractor, fixed support, fixed support is installed in the outside of tractor, movable support, movable support is rotatably connected with fixed support, driving component, driving component is installed in movable support inside, for driving movable support relative fixed support rotation, clamping jaw, installation is in movable support outside, folding ring, folding ring has folding state and unfolded state, folding ring is clamped by clamping jaw when being in folding state, fixed support and movable support are used to support the folding ring from folding state to unfolded state, and the folding ring in unfolded state is used to support the pipeline that occurs deformation;By folding ring folding transportation, and the mode of unfolding after reaching complex round pipeline part, it can make folding ring keep smaller radial dimension when moving in pipeline, to avoid the friction and jam between folding ring and pipeline inner wall, so that folding ring can be smoothly pushed to the position to be repaired.

Description

Technical Field

[0001] This invention relates to the field of pipeline repair technology, and in particular to a plastic pipe recirculation support device. Background Technology

[0002] In urban construction, it is often necessary to lay underground pipes. Because underground pipes are corroded by soil moisture, chemicals and other factors over a long period of time, and usually need to be maintained for more than a few decades before they are replaced, plastic pipes made of polyethylene are widely used because they have both corrosion resistance and long service life.

[0003] However, buried plastic pipes are subject to long-term soil settlement and surface loads, making the top and bottom of the pipes prone to denting and deformation. This denting and deformation not only reduces the pipe's transport capacity but can also lead to structural instability or even rupture in severe cases.

[0004] Currently, the lining method is commonly used in plastic pipe repair. This involves first using a pipe rounding machine to round the dented area inside the pipe, and then adding a new lining tube for support. However, because the lining tube needs to support the rounded pipe, it is usually designed as a cylinder with a diameter almost identical to the pipe's inner diameter, and the gap between its outer wall and the pipe's inner wall is extremely small. This results in significant sliding friction resistance when the lining tube moves inside the pipe, making it difficult to be smoothly pushed to the repair location. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that, in the prior art, the liner tube is difficult to be pushed smoothly to the position to be repaired because the gap between it and the inner wall of the pipe is extremely small and the sliding friction resistance is large.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a plastic pipe recirculation support device, comprising, Tractor; A fixed bracket is installed on the outside of the tractor; A movable support, which is rotatably connected to the fixed support; A driving component, which is installed inside the movable bracket, is used to drive the movable bracket to rotate relative to the fixed bracket; The gripper is mounted on the outside of the movable bracket; A folding ring, which has a folded state and an unfolded state; The folded ring is held by the gripper when it is in the folded state; The fixed bracket and the movable bracket are used to expand the folded ring from a folded state to an unfolded state, and the folded ring in the unfolded state is used to support the deformed pipe.

[0007] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the fixed bracket includes a fixed housing and a first spreading component; The fixed housing includes a first fixed housing fixedly connected to the outside of the tractor, and a second fixed housing fixedly connected to the outside of the first fixed housing.

[0008] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the first spreading component includes a first mounting bracket fixedly connected to the outside of the second fixed shell, a first motor mounted on the outside of the first mounting bracket, a first gear mounted on the output shaft of the first motor, a first rack slidably disposed inside the second fixed shell, a first extension rod fixedly connected to the outside of the first rack, a first mounting plate fixedly connected to the outside of the first extension rod, a first support block fixedly connected to the outside of the first mounting plate, a first cylinder fixedly connected to the inside of the second fixed shell, and a first sliding rod fixedly connected to the outside of the first mounting plate. The first rack meshes with the first gear; The first slide rod is slidably connected to the first cylinder; The first rack, the first extension rod, the first mounting plate, the first support block, the first cylinder, and the first slide rod are all provided in pairs and are arranged symmetrically about the center of the first gear.

[0009] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the movable support includes a movable shell and a second spreading component; The movable housing includes a first movable housing rotatably connected to the outside of the second fixed housing, and a second movable housing fixedly connected to the outside of the first movable housing.

[0010] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the second spreading component includes a second mounting bracket fixedly connected to the outside of the first movable shell, a second motor mounted on the outside of the second mounting bracket, a second gear mounted on the output shaft of the second motor, a second rack slidably disposed inside the first movable shell, a second extension rod fixedly connected to the outside of the second rack, a second mounting plate fixedly connected to the outside of the second extension rod, a second support block fixedly connected to the outside of the second mounting plate, a second cylinder fixedly connected to the inside of the first movable shell, and a second sliding rod fixedly connected to the outside of the second mounting plate. The second rack meshes with the second gear; The second slide rod is slidably connected to the second cylinder; The second rack, the second extension rod, the second mounting plate, the second support block, the second cylinder, and the second slide rod are all provided in pairs and are arranged symmetrically about the center of the second gear.

[0011] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the driving component includes a third mounting bracket fixedly connected to the outside of the first movable shell, a third motor mounted on the outside of the third mounting bracket, a third gear mounted on the output shaft of the third motor, and a fourth gear fixedly connected to the outside of the second fixed shell. The third gear meshes with the fourth gear.

[0012] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the gripper includes a fixed gripper fixedly connected to the outside of the second movable shell, a slide rail fixedly connected to the outside of the second movable shell, a slider slidably connected to the outside of the slide rail, a movable gripper fixedly connected to the outside of the slider, a limiting frame fixedly connected to the outside of the second movable shell, and a spring disposed between the movable gripper and the limiting frame. One end of the spring is fixedly connected to the outside of the movable claw, and the end of the spring away from the movable claw is fixedly connected to the outside of the limiting frame.

[0013] As a preferred embodiment of the plastic pipe recirculation support device of the present invention, the folding ring includes two main tiles and four auxiliary tiles; The two main tiles are arranged opposite each other, and each main tile is hinged to a secondary tile at both ends; The two secondary tiles located on the side of the two main tiles that are close to each other are hinged together. When the folding ring is in the folded state, the two auxiliary tiles located on the side of the two main tiles that are close to each other are clamped between the fixed claw and the movable claw.

[0014] The beneficial effects of the present invention are as follows: By folding the folding ring for transportation and then unfolding it upon reaching the pipe section, the present invention enables the folding ring to maintain a small radial dimension while moving inside the pipe, thereby avoiding friction and jamming between the folding ring and the inner wall of the pipe, and allowing the folding ring to be smoothly pushed to the repair position. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional view of the overall structure of the present invention.

[0017] Figure 2 This is a front view of the overall structure of the present invention.

[0018] Figure 3 This is a cross-sectional view of the fixed bracket and the movable bracket of the present invention.

[0019] Figure 4 This is a schematic diagram of the specific structure of the fixed bracket of the present invention.

[0020] Figure 5 This is a schematic diagram of the specific structure of the movable support of the present invention.

[0021] Figure 6 This is a schematic diagram of the specific structure of the driving component of the present invention.

[0022] Figure 7 This is a schematic diagram of the specific structure of the first spreading component of the present invention.

[0023] Figure 8 This is a schematic diagram of the specific structure of the second spreading component of the present invention.

[0024] Figure 9 This is a front view of the gripper of the present invention.

[0025] Figure 10 This is a side view of the gripper of the present invention.

[0026] Figure 11 This is a schematic diagram of the folded ring of the present invention.

[0027] Figure 12 This is a schematic diagram of the overall structure and working state of the present invention.

[0028] Figure 13 This is a schematic diagram of the folded state of the folding ring of the present invention.

[0029] Figure 14 This is a schematic diagram of the first opening component of the present invention in its opened state.

[0030] Figure 15 This is a schematic diagram of the unfolded state of the folded ring of the present invention.

[0031] In the diagram: 1. Tractor; 2. Fixed bracket; 3. Movable bracket; 4. Drive component; 5. Gripper; 6. Folding ring; 21. Fixed housing; 22. First spreading assembly; 211. First fixed housing; 212. Second fixed housing; 221. First mounting bracket; 222. First motor; 223. First gear; 224. First rack; 225. First extension rod; 226. First mounting plate; 227. First support block; 228. First cylinder; 229. First slide rod; 31. Movable housing; 32. Second spreading assembly; 311. 312. First movable shell; 323. Second movable shell; 324. Second mounting bracket; 325. Second motor; 326. Second gear; 327. Second rack; 328. Second extension rod; 329. Second mounting plate; 320. Second support block; 321. Second cylinder; 322. Second slide rod; 420. Third mounting bracket; 421. Third motor; 43. Third gear; 44. Fourth gear; 55. Fixed claw; 56. Slide rail; 57. Slider; 58. Movable claw; 59. Limiting bracket; 50. Spring; 61. Main tile; 62. Secondary tile. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the inventors, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of the invention.

[0034] Example 1, referring to Figures 1-15 As one embodiment of the present invention, this embodiment provides a plastic pipe recirculation support device, comprising: Tractor 1, which is used to move inside the pipeline, can be pulled by an external cable or driven by a built-in motor. Fixed bracket 2 is installed on the outside of the tractor 1; Movable bracket 3 is rotatably connected to fixed bracket 2; Drive component 4 is installed inside the movable bracket 3 and is used to drive the movable bracket 3 to rotate relative to the fixed bracket 2. Gripper 5 is mounted on the outside of movable bracket 3; Folding ring 6, which has a folded state and an unfolded state; The radial dimension of the folded ring 6 in the folded state is much smaller than the inner diameter of the pipe, which facilitates smooth movement inside the pipe; the folded ring 6 in the unfolded state can provide support for the pipe wall. When the folding ring 6 is in the folded state, it is held by the gripper 5. The fixed bracket 2 and the movable bracket 3 are used to expand the folded ring 6 from the folded state to the unfolded state. The folded ring 6 in the unfolded state is used to support the deformed pipe.

[0035] At work, firstly, such as Figure 12 As shown, the outer diameter of the pipe rounding machine is adjusted to be equal to the inner diameter of the pipe to be repaired, and the pipe rounding machine is moved inside the pipe by pulling the cable. When the pipe rounding machine passes the concave and deformed part of the pipe, the outer contour of the pipe rounding machine can expand and round the pipe wall at the concave part. At this time, the tractor 1 follows behind the pipe rounding machine, and the folding ring 6 is clamped and fixed on the outside of the movable bracket 3 by the gripper 5 in a folded state. After the pipe rounding machine has completely passed the concave section of the pipe, the tractor 1 continues to move forward, transporting the folding ring 6 to the rounded pipe section, and then the tractor 1 stops moving. Subsequently, the unfolding component of the fixed bracket 2 unfolds to partially unfold the folding ring 6, thereby freeing the folding ring 6 from the gripper 5 and temporarily suspending it on the unfolded fixed bracket 2. Next, the driving component 4 drives the movable bracket 3 to rotate 90 degrees relative to the fixed bracket 2. After the rotation is completed, the spreading component of the movable bracket 3 unfolds and further spreads the folding ring 6 to the unfolded state. At this time, part of the outer wall of the folding ring 6 is tightly attached to the inner wall of the pipe that has been restored to a round shape, forming a stable support. Finally, the expansion components of the fixed bracket 2 and the movable bracket 3 are retracted in sequence, allowing the folding ring 6 to remain in an unfolded state by its own structure. The tractor 1 drives the fixed bracket 2 and the movable bracket 3 to detach from the pipe, while the folding ring 6 remains inside the pipe, providing continuous support for the restored pipe and preventing it from denting again.

[0036] By folding the folded ring 6 during transportation, the folded ring 6 can maintain a small radial dimension throughout its entry into the pipeline, effectively avoiding friction or jamming with the inner wall of the pipeline, and allowing the folded ring 6 to be smoothly pushed to the part to be repaired.

[0037] Example 2, refer to Figures 1-4 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The fixed bracket 2 includes a fixed housing 21 and a first expansion assembly 22; The fixed housing 21 is used to support and accommodate the first expansion assembly 22; The first spreading component 22 is used to spread out the folding ring 6.

[0038] The fixed housing 21 includes a first fixed housing 211 fixedly connected to the outside of the tractor 1, and a second fixed housing 212 fixedly connected to the outside of the first fixed housing 211; The first fixed shell 211 is directly connected to the tractor 1, enabling the tractor 1 to drive the fixed bracket 2 to move synchronously. The second fixed housing 212 is used to install the first expansion assembly 22 and to provide a rotation connection point for the movable bracket 3.

[0039] Example 3, referring to Figures 1-4 , Figure 7 , Figures 13-15 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The first opening assembly 22 includes a first mounting bracket 221 fixedly connected to the outside of the second fixed housing 212, a first motor 222 mounted on the outside of the first mounting bracket 221, a first gear 223 mounted on the output shaft of the first motor 222, a first rack 224 slidably disposed inside the second fixed housing 212, a first extension rod 225 fixedly connected to the outside of the first rack 224, a first mounting plate 226 fixedly connected to the outside of the first extension rod 225, a first support block 227 fixedly connected to the outside of the first mounting plate 226, a first cylinder 228 fixedly connected to the inside of the second fixed housing 212, and a first slide rod 229 fixedly connected to the outside of the first mounting plate 226. The first rack 224 meshes with the first gear 223; The first slide rod 229 is slidably connected to the first cylinder 228; The first rack 224, the first extension rod 225, the first mounting plate 226, the first support block 227, the first cylinder 228, and the first slide rod 229 are all provided in pairs and are arranged in a centrally symmetrical manner with respect to the center of the first gear 223; Two centrally symmetrical first racks 224 mesh with each other on both sides of the first gear 223.

[0040] The working principle of the first expansion component 22 is as follows: Figure 4 and Figure 7 As shown, after the first motor 222 starts, it drives the first gear 223 to rotate. Since the first gear 223 meshes with the two first racks 224 at the same time, and the two first racks 224 are centrally symmetrical about the center of the first gear 223, the rotating first gear 223 will drive the two first racks 224 to move synchronously in opposite directions in a straight line. Each first rack 224 drives the first extension rod 225 fixedly connected to the outside of the first rack 224 to move, the first extension rod 225 drives the first mounting plate 226 fixedly connected to the outside of the first extension rod 225 to move, and the first mounting plate 226 drives the first support block 227 fixedly connected to the outside of the first mounting plate 226 to move. The two first support blocks 227 move outward synchronously and symmetrically under the drive of the first gear 223, thereby gradually opening up the folding ring 6 which is in a folded state; Meanwhile, the first cylinder 228 is fixedly connected inside the second fixed shell 212, and the first slide rod 229 is fixedly connected to the outside of the first mounting plate 226. The first slide rod 229 slides through the inside of the first cylinder 228. During the movement of the first mounting plate 226, the first slide rod 229 moves synchronously with the first mounting plate 226. The first cylinder 228 guides and stabilizes the movement of the first mounting plate 226 by constraining the movement direction of the first slide rod 229, thus maintaining the balance of the movement of the first mounting plate 226.

[0041] By using two centrally symmetrically arranged first racks 224, the two first support blocks 227 can move outward stably, in a balanced and symmetrical manner, thereby stably expanding the folding ring 6.

[0042] Example 4, refer to Figures 1-5 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The movable support 3 includes a movable housing 31 and a second expansion assembly 32; The movable housing 31 is used to support and accommodate the second expansion assembly 32; The second spreading component 32 is used to further spread the folding ring 6.

[0043] The movable housing 31 includes a first movable housing 311 rotatably connected to the outside of the second fixed housing 212, and a second movable housing 312 fixedly connected to the outside of the first movable housing 311; The first movable shell 311 is used to install the second expansion component 32 and is rotatably connected to the second fixed shell 212; The second movable housing 312 is used to provide installation space for the second expansion assembly 32.

[0044] Example 5, refer to Figures 1-5 , Figure 8 , Figures 13-15 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The second expansion assembly 32 includes a second mounting bracket 321 fixedly connected to the outside of the first movable housing 311, a second motor 322 mounted on the outside of the second mounting bracket 321, a second gear 323 mounted on the output shaft of the second motor 322, a second rack 324 slidably disposed inside the first movable housing 311, a second extension rod 325 fixedly connected to the outside of the second rack 324, a second mounting plate 326 fixedly connected to the outside of the second extension rod 325, a second support block 327 fixedly connected to the outside of the second mounting plate 326, a second cylinder 328 fixedly connected to the inside of the first movable housing 311, and a second slide rod 329 fixedly connected to the outside of the second mounting plate 326. The second rack 324 meshes with the second gear 323; The second slide rod 329 is slidably connected to the second cylinder 328; The second rack 324, the second extension rod 325, the second mounting plate 326, the second support block 327, the second cylinder 328, and the second slide bar 329 are all provided in pairs and are arranged in a centrally symmetrical manner with respect to the center of the second gear 323; Two centrally symmetrical second racks 324 mesh with each other on both sides of the second gear 323.

[0045] After the first spreading component 22 spreads the folding ring 6, the folding ring 6 is released from the gripper 5. Then, the driving component 4 drives the movable bracket 3 to rotate 90 degrees relative to the fixed bracket 2. After the rotation is completed, the second spreading component 32 further spreads the folding ring 6 to the unfolded state.

[0046] The working principle of the second expansion component 32 is as follows: Figure 5 and Figure 8 As shown, after the second motor 322 starts, it drives the second gear 323 to rotate. Since the second gear 323 meshes with the two second racks 324 at the same time, and the two second racks 324 are centrally symmetrical about the center of the second gear 323, the rotating second gear 323 will drive the two second racks 324 to move synchronously in opposite directions in a straight line. Each second rack 324 drives the second extension rod 325, which is fixedly connected to the outside of the second rack 324, to move. The second extension rod 325 drives the second mounting plate 326, which is fixedly connected to the outside of the second extension rod 325, to move. The second mounting plate 326 drives the second support block 327, which is fixedly connected to the outside of the second mounting plate 326, to move. The two second support blocks 327 move outward synchronously and symmetrically under the drive of the second gear 323, thereby further expanding the folding ring 6, which is in a semi-expanded state, to a fully expanded state. Meanwhile, the second cylinder 328 is fixedly connected inside the first movable shell 311, and the second slide rod 329 is fixedly connected to the outside of the second mounting plate 326. The second slide rod 329 slides through the inside of the second cylinder 328. During the movement of the second mounting plate 326, the second slide rod 329 moves synchronously with the second mounting plate 326. The second cylinder 328 guides and stabilizes the movement of the second mounting plate 326 by constraining the movement direction of the second slide rod 329, thus maintaining the balance of the movement of the second mounting plate 326.

[0047] By using two centrally symmetrically arranged second racks 324, the two second support blocks 327 can move outward stably, in a balanced and symmetrical manner, thereby stably expanding the folding ring 6.

[0048] Example 6, refer to Figures 1-6 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The drive component 4 includes a third mounting bracket 41 fixedly connected to the outside of the first movable housing 311, a third motor 42 mounted on the outside of the third mounting bracket 41, a third gear 43 mounted on the output shaft of the third motor 42, and a fourth gear 44 fixedly connected to the outside of the second fixed housing 212. The third gear 43 meshes with the fourth gear 44; Since the fourth gear 44 is fixedly connected to the second fixed housing 212, and the third gear 43 and the third motor 42 are fixedly connected to the first movable housing 311 through the third mounting bracket 41, when the third motor 42 drives the third gear 43 to rotate, the third gear 43 will roll along the tooth profile of the fourth gear 44, thereby causing the first movable housing 311 to rotate relative to the second fixed housing 212.

[0049] By controlling the direction and angle of the third motor 42, the movable bracket 3 can be precisely driven to rotate to the required angle so that the second opening component 32 and the first opening component 22 can open the folding ring 6 to the unfolded state in different directions.

[0050] Example 7, referring to Figures 1-10 and Figures 13-15 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The gripper 5 includes a fixed gripper 51 fixedly connected to the outside of the second movable housing 312, a slide rail 52 fixedly connected to the outside of the second movable housing 312, a slider 53 slidably connected to the outside of the slide rail 52, a movable gripper 54 fixedly connected to the outside of the slider 53, a limiting frame 55 fixedly connected to the outside of the second movable housing 312, and a spring 56 disposed between the movable gripper 54 and the limiting frame 55. One end of the spring 56 is fixedly connected to the outside of the movable claw 54, and the other end of the spring 56 away from the movable claw 54 is fixedly connected to the outside of the limit bracket 55. To more securely clamp the folding ring 6, a clamping claw 5 can also be installed on the outside of the first fixing shell 211.

[0051] The working principle of the gripper 5 is as follows: the spring 56 is always in a compressed state. The spring 56 applies an elastic force to the movable gripper 54 in the direction of the fixed gripper 51, so that the movable gripper 54 and the fixed gripper 51 cooperate to clamp the folded ring 6 in the folded state. like Figures 13-15 As shown, when the fixed bracket 2 opens the folding ring 6, the folding ring 6 will overcome the elastic force of the spring 56 and push the movable claw 54 away from the fixed claw 51, thereby detaching from the clamping claw 5. It should be noted that since the slider 53, which is fixedly connected to the movable claw 54, can slide on the slide rail 52, when the movable claw 54 moves, the slide rail 52 and the slider 53 cooperate to limit the sliding trajectory of the movable claw 54, thereby ensuring that the movable claw 54 can stably clamp the folding ring 6.

[0052] By setting the gripper 5, the folding ring 6 can be stably clamped during the conveying process. When the folding ring 6 is opened, the folding ring 6 can overcome the elastic force of the spring 56 and push the movable claw 54 away from the fixed claw 51, thereby escaping the gripper 5.

[0053] Example 8, referring to Figures 1-15 This is one embodiment of the present invention. Based on the previous embodiment, this embodiment provides a plastic pipe recirculation support device, comprising: The folding ring 6 includes two main tiles 61 and four secondary tiles 62; Two main tiles 61 are arranged opposite each other, and each main tile 61 is hinged to a secondary tile 62 at both ends; Two secondary tiles 62 located on the side of the two main tiles 61 that are close to each other are hinged together. When the folding ring 6 is in the folded state, the two auxiliary tiles 62 located on the side of the two main tiles 61 that are close to each other are clamped between the fixed claw 51 and the movable claw 54. like Figure 15 As shown, the hinge point between the main tile 61 and the secondary tile 62 is located inside the folding ring 6, while the hinge point between the two secondary tiles 62 located on the side of the two main tiles 61 that are close to each other is located outside the folding ring 6.

[0054] like Figure 13 As shown, when the folding ring 6 is in the folded state, the two auxiliary tiles 62 located on the side of the two main tiles 61 that are close to each other are clamped between the fixed claw 51 and the movable claw 54. When the first spreading component 22 spreads open the folding ring 6, the first support block 227 pushes the two main tiles 61 outward, causing the two auxiliary tiles 62 located on the side of the two main tiles 61 that are close to each other to disengage from the clamping of the fixed claw 51 and the movable claw 54. Subsequently, the drive component 4 drives the movable bracket 3 to rotate, and the second spreading component 32 further spreads out. At this time, the second support block 327 pushes the secondary tile 62 outward, so that the folding ring 6 reaches the unfolded state.

[0055] Since the concave deformation of the pipe occurs at the top and bottom of the pipe, the compressive force of the pipe on the folded ring 6 is applied to the main tile 61; like Figure 15 As shown, the hinge point between the two secondary tiles 62 is located on the outside of the folding ring 6. When the two main tiles 61 are subjected to a squeezing force towards the inside of the folding ring 6, the end faces of the two secondary tiles 62 located on the side of the two main tiles 61 that are close to each other will squeeze and contact each other, thereby preventing the two main tiles 61 from getting close to each other. In other words, when the folding ring 6 is subjected to squeezing forces from the top and bottom of the pipe, it cannot return from the unfolded state to the folded state, thus providing stable and continuous support for the pipe.

[0056] In summary, during operation, firstly, the pipe rounding machine expands and rounds the concave part of the pipe, and then the tractor 1, carrying the folded ring 6 in a folded state, follows to the position where the concave part of the pipe has been rounded. Then, the first spreading component 22 partially spreads the folding ring 6, causing the folding ring 6 to disengage from the clamp 5 and hang on the fixed bracket 2; Next, the driving component 4 drives the movable bracket 3 to rotate 90 degrees relative to the fixed bracket 2, and the second spreading component 32 further spreads the folding ring 6 to the unfolded state, so that the folding ring 6 supports the inner wall of the pipe. Finally, the fixed bracket 2 and the movable bracket 3 are retracted, the tractor 1 is removed, and the folding ring 6 remains in the pipe to provide continuous support.

[0057] By folding the folding ring 6 during transport and then unfolding it upon reaching the pipe section, the folding ring 6 can maintain a small radial dimension while moving inside the pipe, thereby avoiding friction and jamming between the folding ring 6 and the inner wall of the pipe, allowing the folding ring 6 to be smoothly pushed to the repair position.

[0058] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A plastic pipe recirculation support device, characterized in that: include, Tractor (1); A fixed bracket (2) is installed on the outside of the tractor (1); Movable bracket (3), which is rotatably connected to the fixed bracket (2); A driving component (4) is installed inside the movable bracket (3) and is used to drive the movable bracket (3) to rotate relative to the fixed bracket (2); The gripper (5) is installed on the outside of the movable bracket (3); Folding ring (6), the folding ring (6) has a folded state and an unfolded state; The folding ring (6) is held by the gripper (5) when it is in the folded state; The fixed bracket (2) and the movable bracket (3) are used to open the folded ring (6) from the folded state to the unfolded state. The folded ring (6) in the unfolded state is used to support the deformed pipe.

2. The plastic pipe recirculation support device as described in claim 1, characterized in that: The fixed bracket (2) includes a fixed housing (21) and a first expansion assembly (22); The fixed housing (21) includes a first fixed housing (211) fixedly connected to the outside of the tractor (1), and a second fixed housing (212) fixedly connected to the outside of the first fixed housing (211).

3. The plastic pipe recirculation support device as described in claim 2, characterized in that: The first expansion assembly (22) includes a first mounting bracket (221) fixedly connected to the outside of the second fixed housing (212), a first motor (222) mounted on the outside of the first mounting bracket (221), a first gear (223) mounted on the output shaft of the first motor (222), a first rack (224) slidably disposed inside the second fixed housing (212), a first extension rod (225) fixedly connected to the outside of the first rack (224), a first mounting plate (226) fixedly connected to the outside of the first extension rod (225), a first support block (227) fixedly connected to the outside of the first mounting plate (226), a first cylinder (228) fixedly connected to the inside of the second fixed housing (212), and a first slide rod (229) fixedly connected to the outside of the first mounting plate (226). The first rack (224) meshes with the first gear (223); The first slide rod (229) is slidably connected to the first cylinder (228); The first rack (224), the first extension rod (225), the first mounting plate (226), the first support block (227), the first cylinder (228) and the first slide rod (229) are all provided in pairs and are arranged in a centrally symmetrical manner with respect to the center of the first gear (223).

4. The plastic pipe recirculation support device as described in claim 3, characterized in that: The movable support (3) includes a movable housing (31) and a second opening assembly (32); The movable housing (31) includes a first movable housing (311) rotatably connected to the outside of the second fixed housing (212), and a second movable housing (312) fixedly connected to the outside of the first movable housing (311).

5. The plastic pipe recirculation support device as described in claim 4, characterized in that: The second expansion assembly (32) includes a second mounting bracket (321) fixedly connected to the outside of the first movable shell (311), a second motor (322) mounted on the outside of the second mounting bracket (321), a second gear (323) mounted on the output shaft of the second motor (322), a second rack (324) slidably disposed inside the first movable shell (311) and the second movable shell (312), a second extension rod (325) fixedly connected to the outside of the second rack (324), a second mounting plate (326) fixedly connected to the outside of the second extension rod (325), a second support block (327) fixedly connected to the outside of the second mounting plate (326), a second cylinder (328) fixedly connected to the inside of the first movable shell (311) and the second movable shell (312), and a second slide rod (329) fixedly connected to the outside of the second mounting plate (326). The second rack (324) meshes with the second gear (323); The second slide rod (329) is slidably connected to the second cylinder (328); The second rack (324), the second extension rod (325), the second mounting plate (326), the second support block (327), the second cylinder (328) and the second slide rod (329) are all provided in pairs and are arranged in a centrally symmetrical manner with respect to the center of the second gear (323).

6. The plastic pipe recirculation support device as described in claim 5, characterized in that: The drive component (4) includes a third mounting bracket (41) fixedly connected to the outside of the first movable housing (311), a third motor (42) mounted on the outside of the third mounting bracket (41), a third gear (43) mounted on the output shaft of the third motor (42), and a fourth gear (44) fixedly connected to the outside of the second fixed housing (212). The third gear (43) meshes with the fourth gear (44).

7. The plastic pipe recirculation support device as described in claim 6, characterized in that: The gripper (5) includes a fixed gripper (51) fixedly connected to the outside of the second movable shell (312), a slide rail (52) fixedly connected to the outside of the second movable shell (312), a slider (53) slidably connected to the outside of the slide rail (52), a movable gripper (54) fixedly connected to the outside of the slider (53), a limiting frame (55) fixedly connected to the outside of the second movable shell (312), and a spring (56) disposed between the movable gripper (54) and the limiting frame (55); One end of the spring (56) is fixedly connected to the outside of the movable claw (54), and the other end of the spring (56) away from the movable claw (54) is fixedly connected to the outside of the limiting frame (55).

8. The plastic pipe recirculation support device as described in claim 7, characterized in that: The folded ring (6) includes two main tiles (61) and four secondary tiles (62). The two main tiles (61) are arranged opposite each other, and each of the two ends of the main tile (61) is hinged to a secondary tile (62); The two secondary tiles (62) located on the same side of the two main tiles (61) are hinged to each other; When the folding ring (6) is in the folded state, the two secondary tiles (62) located on the side of the two main tiles (61) that are close to each other are clamped between the fixed claw (51) and the movable claw (54).

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