A trenchless pipeline repair device

Abstract

This application relates to a trenchless pipeline repair device, comprising multiple main body sections connected and fixed in sequence. Multiple mounting brackets are circumferentially and evenly spaced on each main body section. Rollers are rotatably mounted on the ends of each mounting bracket away from the main body section. Multiple lamp holders, circumferentially and evenly spaced, are also mounted on the outer wall of each main body section, and ultraviolet lamps are mounted on the lamp holders. A repair frame is provided on each main body section, and a roller is rotatably mounted on each repair frame. The roller is used to abut against the inner wall of an inner lining. A motor drive is also provided on the main body section to drive the rotation of the repair frame. This application has the effect of pressing the inner lining back against the inner wall of the pipeline by the back-and-forth rolling of the roller. Subsequently, the resin is cured by ultraviolet lamps to form a hard new pipeline lining.

Description

Technical Field

[0001] This application relates to the technical field of pipeline repair, and in particular to a trenchless pipeline repair device. Background Technology

[0002] Trenchless pipeline repair technology is an advanced method for inspecting, repairing, or replacing underground pipelines (such as drainage, water supply, and gas pipelines) without damaging or with minimal damage to the ground. This technology effectively reduces the impact on traffic, the environment, and surrounding buildings, and has advantages such as short construction time, low cost, and high safety.

[0003] Pipe lining repair is a widely used trenchless pipe repair method. This method involves installing a flexible tube impregnated with thermosetting resin inside the existing pipe, which is then cured using hot water, steam, or ultraviolet light to form a new pipe lining. The construction steps are as follows: First, the old pipe needs to be cleaned and inspected to ensure there are no obstructions. Then, a flexible tube made of fiberglass or other materials, impregnated with thermosetting resin, is inserted into the pipe. Air or water pressure is used to invert and push the tube into the correct position, so that the resin side faces the inner wall of the old pipe. At this point, the lining will adhere tightly to the inner wall of the pipe through the thermosetting resin. Finally, ultraviolet light is used to further cure the resin, forming a hard new pipe lining.

[0004] During the curing stage, a trolley equipped with ultraviolet lamps is typically used to cure the resin. However, as the trolley moves forward, if it encounters areas where the lining fails to adhere tightly to the pipe wall, and if the lining is not promptly pressed and bonded to the pipe wall, the subsequent curing of that section of the lining will fail, resulting in a loose bond. The aforementioned trolley cannot handle this situation during the curing process, thus its practicality is limited. Utility Model Content

[0005] This application provides a trenchless pipeline repair device that can compress linings that fail to adhere to the inner wall of the pipeline, ensuring the curing effect of the lining and improving its practicality.

[0006] The trenchless pipeline repair device provided in this application adopts the following technical solution: A trenchless pipeline repair device includes multiple main body sections connected and fixed in sequence. Multiple mounting frames are evenly spaced around each main body section. A roller is rotatably mounted on the end of each mounting frame away from the main body section. Multiple lamp holders are also evenly spaced around the outer wall of each main body section, and ultraviolet lamps are mounted on the lamp holders. A repair frame is provided on each main body section, and a roller is rotatably mounted on each repair frame. The roller is used to abut against the inner sidewall of the lining. A motor drive is also provided on each main body section to drive the repair frame to rotate.

[0007] Preferably, the repair frame includes a drive wheel rotatably mounted on the main body, and a synchronous gear is coaxially fixedly mounted on the outer side wall of the drive wheel; the synchronous gear meshes with a drive gear mounted on the output shaft of the motor drive component, and the motor drive component drives the drive wheel to rotate synchronously through the synchronous gear; a support column is fixedly mounted on the drive wheel, and the roller is mounted on the support column.

[0008] Preferably, an extension rod is slidably mounted coaxially on the support column, with one end of the extension rod confined within the support column and the roller rotatably mounted at the other end of the extension rod; a spring is installed inside the support column, and the spring extends and retracts along the sliding direction of the extension rod; one end of the spring abuts against the inner sidewall of the support column, and the other end of the spring abuts against the extension rod; the spring is used to push the extension rod to lift away from the support column.

[0009] Preferably, a directional strip is provided on the outer wall of the extension rod, and the length of the directional strip extends along the length direction of the extension rod; a limiting groove is provided on the support column, and the shape of the limiting groove is adapted to the shape of the directional strip, and the directional strip slides in the limiting groove following the extension rod.

[0010] Preferably, a cylinder is mounted on the mounting bracket, and a limiting plate facing the piston rod of the cylinder is provided on the extension rod. The limiting plate has a plurality of insertion holes arranged at intervals along the sliding direction of the extension rod. The insertion holes are used for the piston rod of the cylinder to be inserted into the limiting plate.

[0011] Preferably, a handle is rotatably provided on the extension rod, and a locking member is provided on the outer wall of the support column below the handle, the locking member being inclined downwards in a direction away from the locking member.

[0012] In summary, this application includes at least one of the following beneficial technical effects: The main body moves along the inside of the pipe by being driven by rollers, and the ultraviolet lamp emits high-intensity ultraviolet light to irradiate the hose impregnated with photosensitive resin, causing the resin to cure and form a strong new inner lining layer. By rolling the rollers back and forth, the liner is pressed firmly against the inner wall of the pipe. The resin is then cured using ultraviolet light to form a hard, new pipe liner. This significantly shortens the construction time. By adjusting the speed of the main body and the light intensity of the ultraviolet lamp, the curing process can be precisely controlled to ensure uniform curing of the lining; thus ensuring the curing effect of the lining and improving its practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the embodiment of this application placed inside the pipe; Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 3 yes Figure 2 A schematic diagram of a partial structural explosion.

[0014] Explanation of reference numerals in the attached drawings: 1. Main body; 100. Connecting pipe; 101. Hanging ring; 102. Camera; 2. Mounting bracket; 20. Cylinder; 3. Roller; 4. Lamp holder; 40. Ultraviolet lamp; 5. Repair bracket; 50. Drive wheel; 51. Synchronous gear; 52. Support column; 520. Limiting groove; 521. Locking element; 53. Extension rod; 530. Directional bar; 54. Spring; 55. Limiting plate; 56. Insertion hole; 57. Handle; 6. Roller; 7. Motor drive component; 70. Drive gear. Detailed Implementation

[0015] The present application will be further described in detail below with reference to the accompanying drawings.

[0016] This application discloses a trenchless pipeline repair device.

[0017] Reference Figure 1 , Figure 2 The trenchless pipeline repair device includes multiple main body sections 1 connected and fixed in sequence by hollow connecting pipes 100. Three mounting brackets 2 are circumferentially and evenly spaced around the outer wall of each main body section 1. Rollers 3 are rotatably mounted on the ends of the mounting brackets 2 away from the main body section 1, and these rollers 3 are used to contact the inner wall of the lining to drive the main body section 1 along the length of the pipeline. Three lamp holders 4 are also fixedly installed on the outer wall of the main body section 1, arranged circumferentially and evenly spaced, with each lamp holder 4 located between two adjacent mounting brackets 2.

[0018] An ultraviolet lamp 40 is installed on the lamp holder 4, facing the inner wall of the pipe. Rollers 3 drive the main body 1 to move along the inside of the pipe. Simultaneously, the ultraviolet lamp 40 emits high-intensity ultraviolet light to irradiate the hose impregnated with photosensitive resin, causing the resin to cure and form a robust new inner lining layer. Compared to traditional hot water or steam curing methods, ultraviolet curing is generally faster, significantly reducing construction time. By adjusting the speed of the main body 1 and the light source intensity of the ultraviolet lamp 40, the curing process can be precisely controlled, ensuring uniform curing of the inner lining.

[0019] like Figure 2 , Figure 3 As shown, a repair frame 5 is provided on the main body 1 located at the head. The repair frame 5 includes a drive wheel 50 coaxially rotatably mounted on the main body 1, and a synchronous gear 51 is coaxially fixedly mounted on the outer wall of the drive wheel 50. A motor drive unit 7 for driving the drive wheel 50 to rotate is also fixedly mounted on the main body 1. The synchronous gear 51 meshes with the drive gear 70 fixed on the output shaft of the motor drive unit 7. The motor drive unit 7 drives the drive wheel 50 to rotate synchronously through the synchronous gear 51. The motor drive unit 7 uses a commercially available brake motor. The brake motor has an electromagnetic brake at its tail. When the motor is powered on, the electromagnetic brake is also powered on and engaged. At this time, the electromagnetic brake does not brake the motor. When the motor is de-powered, the electromagnetic brake is also de-powered. The electromagnetic brake brake is stopped by the action of the spring, thereby overcoming the inertia of the motor after power failure and ensuring that the drive wheel 50 rotates accurately to the designated position.

[0020] like Figure 2 , Figure 3 As shown, a support column 52 is fixedly installed on the circumferential outer wall of the drive wheel 50, and the length of the support column 52 extends radially along the drive wheel 50. An extension rod 53 is slidably arranged coaxially on the support column 52. One end of the extension rod 53 is limited inside the support column 52, and the other end of the extension rod 53 extends out of the support column 52. A roller 6 is rotatably arranged at the end of the extension rod 53 that extends outside the support column 52. The rotation axis of the roller 6 is arranged along the length direction of the pipe, and the roller 6 is used to abut against the inner sidewall of the lining.

[0021] like Figure 2 , Figure 3 As shown, a guide strip 530 is fixedly installed on the outer wall of the extension rod 53, and the length of the guide strip 530 extends along the length direction of the extension rod 53. A limiting groove 520 is provided on the support column 52, and the shape of the limiting groove 520 is adapted to the shape of the guide strip 530. The guide strip 530 slides within the limiting groove 520 along with the extension rod 53. The guide strip 530 and the limiting groove 520 are used to restrict the extension rod 53 from rotating within the support column 52, so that the extension rod 53 can only slide along the length direction of the guide strip 530.

[0022] like Figure 2 , Figure 3As shown, a spring 54 is installed inside the support column 52. The spring 54 extends and retracts along the sliding direction of the extension rod 53. One end of the spring 54 abuts against the inner wall of the support column 52, and the other end of the spring 54 abuts against the extension rod 53. The spring 54 is used to push the extension rod 53 to rise away from the support column 52. Under the elastic force of the spring 54, the roller 6 presses against the inner wall of the liner.

[0023] like Figure 2 , Figure 3 As shown, a cylinder 20 is fixedly mounted on the mounting bracket 2 located at the head. A limiting plate 55 facing the piston rod of the cylinder 20 is fixedly mounted on the extension rod 53. The length direction of the limiting plate 55 is consistent with the length direction of the extension rod 53. The extension and retraction direction of the piston rod of the cylinder 20 is perpendicular to the length direction of the limiting plate 55. A plurality of insertion holes 56 are arranged sequentially and at intervals along the sliding direction of the extension rod 53 through the limiting plate 55. The insertion holes 56 are used for the piston rod of the cylinder 20 to be inserted into the limiting plate 55.

[0024] like Figure 2 , Figure 3 As shown, a handle 57 is rotatably mounted on the extension rod 53, and a locking member 521 is located below the handle 57 on the outer wall of the support column 52. The locking member 521 is inclined downwards in a direction away from the locking member 521. By pulling the handle 57 towards the locking member 521, the extension rod 53 is gradually pressed into the support column 52, and the spring 54 is gradually compressed. Finally, the handle 57 is rotated to the bottom of the locking member 521. Through the cooperation between the locking member 521 and the handle 57, the extension rod 53 is locked, thus achieving the storage of the extension rod 53.

[0025] like Figure 2 , Figure 3 As shown, a hanging ring 101 is fixedly installed on the main body 1 at the head. The hanging ring 101 is used for suspending and fixing a traction rope to the main body 1. By pulling the traction rope at the other end of the pipe, the main body 1 can be moved inside the pipe. A camera 102 is also fixedly installed on the main body 1 at the head. The camera 102 is used to capture the situation inside the pipe and transmit the captured video signal to a mobile terminal on the ground. The staff on the ground can obtain real-time information about the lining inside the pipe through the mobile terminal.

[0026] The implementation principle is as follows: Before curing, the extension rod 53 is pressed down towards the support column 52 until the height of the roller 6 is lower than the height of the roller 3. Then, the piston rod of the cylinder 20 is inserted into the appropriate insertion hole 56 by activating the cylinder 20. The extension rod 53 is kept pressed down by the mutual insertion and cooperation between the cylinder 20 and the insertion hole 56. Next, the main body 1 is placed at one end of the pipe. The worker at the other end of the pipe pulls the traction rope fixed to the main body 1 to drive the main body 1 to move inside the pipe. With the video signal transmitted in real time by the camera 102, the worker on the ground can obtain the condition of the lining inside the pipe in real time through a mobile terminal.

[0027] Simultaneously, the ultraviolet lamp 40 is turned on, and the main body 1 is moved along the inside of the pipe by the roller 3. The ultraviolet lamp 40 emits high-intensity ultraviolet light to irradiate the hose impregnated with photosensitive resin, causing the resin to cure and form a solid new inner lining layer. When it is observed that the inner lining is not tightly bonded to the inner wall of the pipe, the roller 6 is first moved to the area below the inner lining. Then, the piston rod of the cylinder 20 is controlled to retract until the piston rod of the cylinder 20 exits from the insertion hole 56 of the limit plate 55. At this time, the extension rod 53 will be ejected away from the support column 52 under the elastic force of the spring 54 until the roller 6 and the inner lining come into contact with each other. Then, the drive wheel 50 is rotated by controlling the motor drive 7 until the roller 6 is aligned with the inner lining that needs to be repaired. By the back and forth rolling of the roller 6, the inner lining can be pressed tightly against the inner wall of the pipe again. Then, the resin is cured by the ultraviolet lamp 40 to form a hard new pipe inner lining.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A trenchless pipe rehabilitation apparatus comprising a plurality of body sections (1) which are successively connected and fixed, characterized in that: The main body (1) is provided with a plurality of mounting brackets (2) arranged in a circumferentially evenly spaced ring. A roller (3) is rotatably provided at the end of the mounting bracket (2) away from the main body (1). A plurality of lamp holders (4) arranged in a circumferentially evenly spaced ring are also installed on the outer side wall of the main body (1). An ultraviolet lamp (40) is installed on the lamp holder (4). A repair frame (5) is provided on the main body (1). A roller (6) is rotatably provided on the repair frame (5). The roller (6) is used to abut against the inner side wall of the lining. A motor drive (7) is also provided on the main body (1) for driving the repair frame (5) to rotate.

2. The trenchless pipe rehabilitation device of claim 1, wherein: The repair frame (5) includes a drive wheel (50) rotatably mounted on the main body (1). A synchronous gear (51) is coaxially fixed on the outer side wall of the drive wheel (50). The synchronous gear (51) meshes with the drive gear (70) mounted on the output shaft of the motor drive (7). The motor drive (7) drives the drive wheel (50) to rotate synchronously through the synchronous gear (51). A support column (52) is fixedly mounted on the drive wheel (50), and the roller (6) is mounted on the support column (52).

3. The trenchless pipe rehabilitation device of claim 2, wherein: An extension rod (53) is slidably mounted on the support column (52) in a coaxial manner. One end of the extension rod (53) is limited inside the support column (52), and the roller (6) is rotatably mounted on the other end of the extension rod (53). A spring (54) is provided inside the support column (52), and the spring (54) extends and retracts along the sliding direction of the extension rod (53). One end of the spring (54) abuts against the inner sidewall of the support column (52), and the other end of the spring (54) abuts against the extension rod (53). The spring (54) is used to push the extension rod (53) to lift away from the support column (52).

4. The trenchless pipe rehabilitation device of claim 3, wherein: A directional strip (530) is provided on the outer wall of the extension rod (53), and the length of the directional strip (530) extends along the length direction of the extension rod (53); a limiting groove (520) is provided on the support column (52), and the shape of the limiting groove (520) is adapted to the shape of the directional strip (530), and the directional strip (530) slides in the limiting groove (520) following the extension rod (53).

5. The trenchless pipe rehabilitation device of claim 3, wherein: A cylinder (20) is mounted on the mounting bracket (2). A limiting plate (55) facing the piston rod of the cylinder (20) is provided on the extension rod (53). A plurality of insertion holes (56) are arranged sequentially at intervals along the sliding direction of the extension rod (53) through the limiting plate (55). The insertion holes (56) are used for the piston rod of the cylinder (20) to be inserted into the limiting plate (55).

6. The trenchless pipe rehabilitation device of claim 3, wherein: A handle (57) is rotatably mounted on the extension rod (53), and a locking member (521) located below the handle (57) is mounted on the outer wall of the support column (52). The locking member (521) is inclined downward in a direction away from the locking member (521).

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