A trenchless pipe rehabilitation apparatus and method

Abstract

The application relates to a trenchless pipeline repairing device and method, and belongs to the technical field of pipeline repairing. The pipeline repairing device comprises a repairing trolley and a charging and discharging device for charging and discharging the repairing trolley; the repairing trolley comprises two walking end covers and a connecting assembly connecting the two walking end covers; the connecting assembly is provided with ultraviolet lamps for curing UV repairing pipes; the walking end cover is provided with a sealing joint for sealingly mounting the UV repairing pipe, a shielding assembly located on the inner side of the sealing joint and used for supporting the UV repairing pipe, and a girdling mechanism located between the sealing joint and the shielding assembly; and the sealing end cover is provided with a mounting bracket for mounting the shielding assembly and the girdling mechanism. The application has the effect of improving the structural strength of the tubular repairing structure of the local repairing process.

Description

Technical Field

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

[0002] With the development of modern industry, pipelines are playing an increasingly important role in production and use. However, due to the special nature of the internal environment of pipelines, once problems such as damage or corrosion occur, it is usually necessary to excavate the ground at the damaged section of the pipeline, which is quite difficult to repair. Therefore, trenchless pipeline repair technology has emerged.

[0003] Existing trenchless pipeline repair processes typically include partial repair and overall repair processes. The partial repair process primarily utilizes a UV lamp cart with an inflatable air bladder, and the specific steps are as follows: 1. Coat a layer of UV-curable repair material onto a transparent plastic film, and cover the outside of the UV-curable repair material with a light-shielding cloth to obtain a UV repair tube. This operation should be performed in an environment without UV light. 2. Wrap the UV repair tube around the inflatable air bladder of the UV lamp cart, ensuring that both ends of the UV repair tube overlap. 3. Transport the UV lamp cart into the pipeline to be repaired, inflate the inflatable air bladder, causing the resin repair material to adhere tightly to the pipe wall, while the ends of the UV repair tube remain overlapped, thus constructing a complete annular structure. 4. Irradiate the repair material with a UV lamp to cure it, forming a tubular repair structure inside the pipeline. 5. Deflate the inflatable air bladder, detaching it from the cured UV repair tube, and remove the UV lamp cart with the inflatable air bladder from the pipeline, thereby completing the repair process.

[0004] Regarding the aforementioned technologies, the tubular repair structure constructed using UV repair tubes in the local repair process is not a complete tube. The inventors believe that the structural strength of the tubular repair structure in the aforementioned local repair process needs to be improved. Summary of the Invention

[0005] In order to improve the structural strength of the tubular repair structure in the local repair process, this application provides a trenchless pipe repair device.

[0006] The trenchless pipeline repair device provided in this application adopts the following technical solution:

[0007] A trenchless pipe repair device includes a repair trolley and a deflation / inflation device for inflating and deflating the repair trolley; the repair trolley includes two travel end caps and a connecting assembly connecting the two travel end caps; the connecting assembly has a UV lamp for curing a UV repair tube; the travel end caps have a sealing joint for sealing the UV repair tube, a shielding assembly located inside the sealing joint and for supporting the UV repair tube, and a circumferential cutting mechanism located between the sealing joint and the shielding assembly; the sealing end caps have mounting brackets for mounting the shielding assembly and the circumferential cutting mechanism.

[0008] By adopting the above technical solution, when repairing pipelines using the above-mentioned repair device, both ends of the repair tube are sealed and installed on the sealing joints of the traveling end cap; then, the repair trolley is placed into the pipeline to be repaired, and air is injected into the repair trolley through the inflation / deflation device, so that the outer wall of the UV repair tube fits against the inner wall of the pipeline to be repaired; then, the two ends of the UV repair tube are blocked by the shielding component, and the UV lamp is turned on to irradiate the middle of the UV repair tube; after the UV repair tube is completely cured, the repair trolley is deflated; finally, the UV repair tube is circumcised by the ring-cutting mechanism, so that the repair trolley and the UV repair tube are separated. The above-mentioned repair uses tubular UV repair material, which can improve the strength of the repair structure compared to using strip repair material to form an incomplete tube after curing; at the same time, the use of the shielding component and the ring-cutting mechanism facilitates the separation of the repair trolley and the UV repair tube.

[0009] Optionally, the shielding assembly includes a shielding plate fixed to the mounting bracket and a shielding airbag installed on the outer peripheral sidewall of the shielding plate; the outer peripheral sidewall of the shielding plate is provided with an annular arrangement groove for arranging the shielding airbag; the shielding airbag is connected to the inflation / deflation device so that the shielding airbag has an inflated state and a contracted state; when the shielding airbag is in the inflated state, the shielding airbag is supported on the inner wall of the UV repair tube; when the shielding airbag is in the contracted state, the shielding airbag is located in the annular arrangement groove.

[0010] By adopting the above technical solution, the composition structure of the shielding component is disclosed. The shielding airbag is installed on the mounting bracket through the shielding plate. After the inflation and deflation device completes the inflation of the UV repair tube, the shielding airbag is switched to the inflated state, so that the shielding airbag is supported on the inner walls of both ends of the UV repair tube, which can block the ultraviolet light emitted by the ultraviolet lamp, making it convenient for the circumferential cutting mechanism to circumferentially cut the area that has not been irradiated by the ultraviolet lamp. After the UV repair tube has cured, the shielding airbag is contracted into the annular arrangement groove, which reduces the probability of the circumferential cutting mechanism coming into contact with the shielding airbag and causing the shielding airbag to be punctured.

[0011] Optionally, the shielding airbag has a folded corrugated ring.

[0012] By adopting the above technical solution, the folded corrugated ring allows the shielding airbag to expand radially when it is inflated, making the shielding airbag's support for the UV repair tube more stable. At the same time, when the shielding airbag is deflated, it is easy to radially retract the shielding airbag into the annular arrangement groove, reducing the probability of the shielding airbag being punctured.

[0013] Optionally, the girdling mechanism includes a mounting sleeve rotatably mounted on the mounting bracket, a girdling blade radially slidably mounted on the outer wall of the mounting sleeve, a drive assembly mounted on the mounting sleeve and driving the girdling blade to move radially, and a rotary motor mounted on the mounting bracket and driving the mounting sleeve to rotate; the inner wall of the mounting sleeve is provided with an internal tooth surface, and the output shaft of the rotary motor is equipped with a rotary gear that mates with the internal tooth surface of the mounting sleeve.

[0014] By adopting the above technical solution, the composition structure of the circumferential cutting mechanism is disclosed. When circumferentially cutting the UV repair tube, the driving component drives the circumferential cutting blade to slide radially, so that the circumferential cutting blade pierces the uncured part in the UV repair tube. Then, the rotary motor is started, and the mounting sleeve is driven to rotate circumferentially under the cooperation of the rotary gear and the internal tooth surface, so that the circumferential cutting blade on the mounting sleeve circumferentially cuts the UV repair tube. The above design realizes the separation of the UV repair tube from the repair carriage. The circumferential cutting part is the uncured and relatively soft part, and the circumferential cutting is convenient.

[0015] Optionally, the outer wall of the mounting sleeve is provided with a radially arranged slide rail, and the circumferential cutting blade is provided with a slider that cooperates with the guide rail; the drive assembly includes a lead screw nut mounted on the circumferential cutting blade and a lead screw motor mounted on the mounting sleeve and cooperating with the lead screw nut.

[0016] By adopting the above technical solution, a structure in which the circumferential cutting blade slides radially on the mounting sleeve is disclosed. After the shielding airbag is deflated, the screw motor and screw nut work together to drive the circumferential cutting blade to move radially, so that the circumferential cutting blade pierces the UV repair tube. The above-mentioned drive component can be arranged at the bottom of the slide rail away from the UV repair tube when not being repaired, reducing the probability of the circumferential cutting blade contacting the UV repair tube. Furthermore, the radial sliding setting of the circumferential cutting blade allows the circumferential cutting blade to adapt to pipes with different inner diameters to be repaired.

[0017] Optionally, the girdling blade is fitted into the end face of the baffle plate facing the sealing joint.

[0018] By adopting the above technical solution, after the venting operation in the repair trolley is completed, the internal air pressure of the repair trolley decreases, causing the uncured part in the UV repair tube to begin to shrink inward. The girdling blade is then attached to the end face of the shielding plate, which is the transition area between the cured and uncured parts in the UV repair tube. Girdling this area can reduce the drooping uncured parts at both ends of the cured UV repair tube.

[0019] Optionally, the end face of the mounting bracket is provided with a plug that engages with the connecting assembly. The connecting assembly has a plug groove for inserting the plug, a locking hole communicating with the side wall of the plug groove, and a locking screw for pressing the plug is arranged in the locking hole.

[0020] By adopting the above technical solution, the cooperation between the connector and the slot enables the disassembly of the mounting bracket and connecting components. When installing the UV repair tube, first separate the connector and slot of one of the walking end caps, then put the UV repair tube on the repair trolley, and then insert the connector into the slot and lock it with the locking screw. The above design makes it convenient to install the UV repair tube on the repair trolley.

[0021] Optionally, a walking support foot is provided on the outer end face of the walking end cover. The walking support foot includes a support frame arranged circumferentially along the axis of the walking end cover and a sliding piece connected to the end of the support frame and slidably mounted on the walking end cover. The walking end cover has a sliding seat for the sliding piece to slide radially.

[0022] By adopting the above technical solution and setting the traveling legs, the repair trolley can move and travel on the pipeline to be repaired. By setting the sliding plate and sliding seat, the extension distance of the support can be adjusted, which improves the adaptability of the traveling legs to pipelines with different inner diameters to be repaired.

[0023] Optionally, the sealing joint is further provided with an annular seal on the end face facing the connecting assembly, the annular seal having an elastic flange for abutting against the inner wall of the UV repair tube.

[0024] By adopting the above technical solution, the setting of the annular seal achieves the sealing effect of the UV repair pipe after installation and the sealing joint. When the repair trolley is vented, the uncured UV repair pipe retracts inward and abuts against the elastic flange, and drives the elastic flange to continue to retract inward, which further improves the sealing effect.

[0025] The second objective of this invention is to provide a trenchless pipeline repair process that uses ultraviolet light to cure UV repair tubes to repair pipeline defects, thereby improving the structural strength of the repaired structure compared to simply using strip-shaped UV repair tubes.

[0026] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0027] A trenchless pipeline repair method includes the following steps:

[0028] S1, seal both ends of the pipe to be repaired, with the two ends of the pipe to be repaired corresponding to the drainage wells, then dredge the inside of the pipe to be repaired and clean the garbage and water to both ends to be discharged from the drainage wells;

[0029] S2, Place the remote-controlled car equipped with a camera into the pipe to be repaired, control the remote-controlled car to move inside the underground pipe, and use the camera to find and locate the defect points inside the pipe to be repaired.

[0030] S3. Select a repair trolley that fits the inner wall of the pipe to be repaired, install the UV repair tube, remove the plug and slot of one travel end cover, then place the UV repair tube sleeve connection assembly on the sealing joint of the other travel end cover, then insert the plug into the slot and tighten it with the locking screw to fix the UV repair tube between the two travel end covers.

[0031] S4, Place the repair trolley into the pipe to be repaired, and move the repair trolley to the defect point inside the pipe using a traction rope;

[0032] S5, inflate the travel end cover with air through the inflation and deflation device so that the outer wall of the UV repair tube abuts against the inner wall of the pipe to be repaired. Then, inflate the support airbag with air through the inflation and deflation device so that the support airbag supports and shields both ends of the UV repair tube.

[0033] S6, the UV lamp is powered through the power supply line, the UV lamp emits UV light, which irradiates the UV repair tube, causing the UV repair tube to begin to cure, and then left to stand for a period of time.

[0034] S7. After the UV repair tube is completely cured, the inflation and deflation device deflates the UV repair tube and the shielding airbag in sequence, causing the shielding area in the UV repair tube to indent inward. The lead screw motor drives the ring cutting blade to move radially toward the inner wall of the UV repair tube, so that the ring cutting blade penetrates the UV repair tube. Then, the rotary motor drives the mounting sleeve to rotate circumferentially, so that the ring cutting blade can ring cut the shielding area, allowing the cured area in the UV repair tube to separate from the walking end cap.

[0035] S8 uses a traction rope to remove the repair trolley from the repaired pipe, removes the objects blocking both ends of the pipe, and completes the pipe repair.

[0036] By adopting the above technical solution, the UV repair tube is directly installed on the repair trolley, saving the use of expansion airbags. Compared with the strip repair material wrapped around the repair trolley, the cured tubular UV repair material has better structural strength. At the same time, the installation is simple and the separation of the repair trolley and the UV repair tube is relatively convenient.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. The trenchless pipeline repair device of this application includes a repair trolley and an inflation / deflation device. The repair trolley includes a traveling end cover and a connecting assembly. The traveling end cover has a sealing joint, a shielding assembly, and a circumferential cutting mechanism. Compared with UV repair pipe, the use of UV repair pipe improves the structural strength after repair and is easy to install and operate.

[0039] 2. By setting up the shielding component, this application can provide support and shielding for the inflated UV repair tube. An uncured area is formed between the two ends of the UV repair tube and the shielding airbag, which facilitates the ring cutting mechanism to perform ring cutting.

[0040] 3. This application, through the setting of the circumferential cutting mechanism, can circumferentially cut the repaired UV repair tube, so that the end of the circumferential cutting blade pierces the uncured area in the UV repair tube, thereby realizing the separation of the UV repair tube from the repair carriage. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the pipeline repair device.

[0042] Figure 2 This is an explosion diagram of the pipeline repair device's repair trolley and UV repair pipe.

[0043] Figure 3 This is a cross-sectional structural diagram of the UV repair tube in Example 1.

[0044] Figure 4 This is a partial cross-sectional schematic diagram of the pipeline repair device.

[0045] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0046] Figure 6 yes Figure 4 A magnified view of a portion of point B in the middle.

[0047] Figure 7 yes Figure 4 A magnified view of a portion of point C.

[0048] Figure 8 This is a cross-sectional schematic diagram of the shielding component of the walking end cover.

[0049] Figure 9 This is an exploded view of the mounting bracket and connecting components of the walking end cover.

[0050] Figure 10 This is a cross-sectional structural diagram of the walking support legs of the walking end cover.

[0051] Figure 11 This is a schematic diagram of the repair process in Example 2.

[0052] Explanation of reference numerals in the attached drawings: 1. Repair trolley; 11. Inflation chamber; 2. Inflation / deflation device; 3. Walking end cover; 31. Sealing joint; 311. Locking hole; 312. Locking element; 313. Annular seal; 3131. Abutment ring; 3132. Elastic flange; 32. Shielding assembly; 321. Shielding plate; 3211. Annular arrangement groove; 322. Shielding airbag; 3221. Folded corrugated ring; 323. Connecting pipe; 33. Ring cutting mechanism; 331. Mounting sleeve; 3311. Internal tooth surface; 3312. Slide rail; 332. Ring cutting blade; 3321. Slider; 333. Drive assembly; 3331. Lead screw nut; 3332. Lead screw motor; 334. Rotary motor; 3341. Rotary... 335. Gear; 34. Rotary bearing; 35. Mounting bracket; 36. Placement slot; 37. Gear slot; 38. Connector; 39. Abutment part; 30. Positioning slot; 31. Air inlet / outlet port; 32. Air inlet / outlet connector; 33. Traveling foot; 34. Support frame; 35. Sliding plate; 36. Sliding seat; 37. Sliding groove; 38. Fixing hole; 39. Tightening bolt; 40. Connecting assembly; 41. Lamp holder; 412. Connecting groove; 413. Locking hole; 414. Locking screw; 45. Ultraviolet lamp; 56. UV repair tube; 57. Shielding layer; 58. First isolation layer; 59. UV repair layer; 50. Second isolation layer; 60. Pipe to be repaired; 61. Drainage well; 70. Traction rope. Detailed Implementation

[0053] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0054] This application discloses a trenchless pipeline repair device.

[0055] Example 1:

[0056] Reference Figure 1 and Figure 2 A trenchless pipe repair device includes a repair trolley 1 and an inflation / deflation device 2 for inflating and deflation of the repair trolley 1. The repair trolley 1 includes two travel end caps 3 and a connecting assembly 4 connecting the two travel end caps 3. A UV repair tube 5 is installed between the two travel end caps 3, and a sealed inflation chamber 11 is formed between the inner wall of the UV repair tube 5 and the end faces of the two travel end caps 3.

[0057] The connecting assembly 4 includes a lamp holder 41 detachably mounted on the end face of the walking end cover 3 and an ultraviolet lamp 42 mounted on the lamp holder 41 for curing the UV repair tube 5. The ultraviolet lamp 42 is arranged coaxially with the walking end cover 3.

[0058] Reference Figure 3 The UV repair tube 5 comprises, from the outside to the inside, a light-shielding layer 51, a first isolation layer 52, a UV repair layer 53, and a second isolation tube layer. The light-shielding layer 51, the first isolation layer 52, the UV repair layer 53, and the second isolation tube layer are independent of each other and can be detached from each other. Both the first and second isolation tube layers are made of transparent material. When not exposed to ultraviolet light, the UV repair layer 53 is in a flexible state and can be folded for easy installation; when the UV curing tube layer is exposed to ultraviolet light, it cures, causing the UV repair tube 5 to adhere to the inner wall of the pipe 6 to be repaired, completing the local repair work.

[0059] Reference Figure 2 and Figure 4 The traveling end cap 3 has a sealing joint 31 for sealing the UV repair tube 5, a shielding assembly 32 located inside the sealing joint 31, and a circumferential cutting mechanism 33 located between the sealing joint 31 and the shielding assembly 32 for cutting the UV repair tube 5. Both traveling end caps 3 have mounting brackets 34 on their opposite end faces for mounting the shielding assembly 32 and the circumferential cutting mechanism 33. The mounting brackets 34 are columnar and coaxially arranged with the UV lamp 42.

[0060] Combination Figures 1 to 4 The UV repair tube 5 is sealed and installed on the sealing joints 31 of the two traveling end caps 3. The inflation / deflation device 2 first inflates the inflation chamber 11 of the repair cart 1, and then the two ends of the UV repair tube 5 are blocked by the shielding component 32. The area between the shielding component 32 and the sealing joint 31 of the UV repair tube 5 is defined as the shielding area, and the area between the two shielding components 32 is defined as the curing area. The UV lamp 42 irradiates the curing area, causing the UV repair tube 5 in the curing area to cure. Then, the shielding area is circumferentially cut by the circumferential cutting mechanism 33, so that the repair cart 1 and the UV repair tube 5 are separated.

[0061] Reference Figure 4 and Figure 5The sealing joint 31 is generally disc-shaped. The outer edge of the traveling end cap 3 has an integral abutment portion 35 for the end of the UV repair tube 5 to abut. The outer diameter of the abutment portion 35 is larger than the outer diameter of the sealing joint 31, such that the end face of the abutment portion 35 and the side wall of the sealing joint 31 form a positioning groove 351 for placing the end of the UV repair tube 5. The side wall of the sealing joint 31 has multiple locking holes 311 circumferentially arranged, and locking elements 312 for inserting the UV repair tube 5 are arranged at the locking holes 311. In this embodiment, the side wall of the sealing joint 31 has four circumferentially spaced locking holes 311, and the locking elements 312 are screws; the UV repair tube 5 is fixed to the sealing joint 31 by screws.

[0062] The sealing joint 31 also has an annular sealing element 313 on the outer edge of its inner end face facing the UV lamp 42 for achieving a sealing effect. The annular sealing element 313 is generally annular and includes an abutting ring 3131 that abuts against the outer edge of the end face of the sealing joint 31 and an elastic flange 3132 that abuts against the inner wall of the UV repair tube 5. The elastic flange 3132 is inclined outward towards the UV lamp 42. Under normal conditions, the inner wall of the UV repair tube 5 abuts against the elastic flange 3132 to seal the inflation chamber 11. When the inflation chamber 11 is deflated, the air pressure in the inflation chamber 11 decreases, causing the UV repair tube 5 in the shielded area to indent inward. The UV repair tube 5 drives the elastic flange 3132 to incline inward, thereby increasing the contact area between the elastic flange 3132 and the UV repair tube 5 and improving the sealing effect.

[0063] Reference Figure 4 and Figure 6 The shielding assembly 32 includes a shielding plate 321 fixed to the side of the mounting bracket 34 away from the sealing joint 31, and a shielding airbag 322 installed on the outer peripheral sidewall of the shielding plate 321 to support the UV repair tube 5. The shielding plate 321 is an annular plate, and the end face of the shielding plate 321 away from the sealing joint 31 is flush with the end face of the mounting bracket 34. The shielding plate 321 and the mounting bracket 34 can be fixedly connected by welding, gluing, bolts, etc. The outer peripheral sidewall of the shielding plate 321 has an annular arrangement groove 3211 for arranging the shielding airbag 322. The shielding airbag 322 is an annular airbag capable of radial expansion and contraction. The shielding assembly 32 has multiple connecting pipes 323 connecting the shielding airbags 322 circumferentially arranged on the bottom wall of the annular arrangement groove 3211. The multiple connecting pipes 323 are interconnected and axially pass through the travel end cap 3 to communicate with the inflation / deflation device 2.

[0064] Combination Figure 1Each of the two walking end caps 3 has an inflation / deflation hole 36 that penetrates the end face of the sealing joint 31, and an inflation / deflation connector 361 for communicating with the inflation / deflation device 2 is arranged in the inflation / deflation hole 36. In this embodiment, the inflation / deflation device 2 is an air pump, which can inflate or deflate the inflation chamber 11 through the inflation / deflation connector 361. The portions of the inflation / deflation connector 361 and the connecting pipe 323 that extend from the end face of the walking end cap 3 are connected by a control valve, which is used to control the inflation / deflation of the inflation / deflation connector 361 or the connecting pipe 323 respectively.

[0065] Reference Figure 4 and Figure 6 The shielding airbag 322 is connected to the inflation / deflation device 2, so that the shielding airbag 322 has an inflated and contracted state. When the shielding airbag 322 is in the inflated state, the outer wall of the shielding airbag 322 abuts against and is supported by the inner wall of the UV repair tube 5. When the shielding airbag 322 is in the contracted state, the shielding airbag 322 is located in the annular arrangement groove 3211, which reduces the probability of the ring cutting mechanism 33 contacting the shielding airbag 322 during ring cutting.

[0066] The shielding airbag 322 has folded corrugated rings 3221 on both ends of the radial direction. When the annular airbag expands, the folded corrugated rings 3221 allow the shielding airbag 322 to be radially supported on the inner wall of the UV repair tube 5, thereby improving the support and shielding effect on the shielding area.

[0067] Reference Figure 4 , Figure 7 and Figure 8 The girdling mechanism 33 includes a mounting sleeve 331 rotatably mounted on a mounting bracket 34, a girdling blade 332 radially slidably mounted on the outer wall of the mounting sleeve 331, a drive assembly 333 disposed on the mounting sleeve 331 for driving the girdling blade 332 to move radially, and a rotary motor 334 mounted on the mounting bracket 34 for driving the mounting sleeve 331 to rotate circumferentially.

[0068] The two ends of the mounting sleeve 331 abut against the sealing joint 31 and the baffle plate 321, respectively. The inner diameter of the mounting sleeve 331 is larger than the outer diameter of the mounting bracket 34. The traveling end cover 3 is provided with a rotary bearing 335 between the mounting sleeve 331 and the mounting bracket 34 to improve the stability of the mounting sleeve 331 when it rotates.

[0069] The rotary motor 334 is arranged horizontally along the axis of the mounting bracket 34, meaning the output shaft of the rotary motor 334 is parallel to the axis of the mounting bracket 34. The side wall of the mounting bracket 34 has a placement groove 341 for fixing the rotary motor 334, and a rotary gear 3341 is coaxially mounted on the output shaft of the rotary motor 334. The mounting bracket 34 has a gear groove 342 for arranging the rotary gear 3341 and communicating with the motor groove. The radial depth of the gear groove 342 is less than the diameter of the rotary gear 3341, allowing the rotary gear 3341 to protrude from the side wall of the mounting bracket 34. An internal tooth surface 3311, meshing with the rotary gear 3341, is integrally formed in the center of the inner wall of the mounting sleeve 331. The output shaft of the rotary motor 334 drives the rotary gear 3341 to rotate, and the engagement of the rotary gear 3341 with the internal tooth surface 3311 causes the mounting sleeve 331 to rotate along the axis of the mounting bracket 34.

[0070] A slide rail 3312 is provided on the outer wall of the mounting sleeve 331 near the baffle plate 321, and the slide rail 3312 is arranged radially along the mounting sleeve 331. The slide rail 3312 is fixedly connected to the mounting sleeve 331 by screws. A slider 3321 is provided at the end of the circumferential cutting blade 332, which radially slides and engages with the slide rail 3312. The drive assembly 333 includes a lead screw nut 3331 disposed on the circumferential cutting blade 332 and a lead screw motor 3332 disposed on the outer wall of the mounting sleeve 331 and engaging with the lead screw nut 3331. The lead screw nut 3331 is disposed inside the slider 3321. The length direction of the lead screw motor 3332 is parallel to the length direction of the slide rail 3312, and the lead screw passes through the slider 3321 and engages with the lead screw nut 3331 inside the slider 3321. The circumferential cutting blade 332 is attached to the end face of the shielding plate 321 facing the sealing joint 31, so as to be able to circumferentially cut the transition area between the shielding area and the irradiation area, reducing the residual part in the shielding area.

[0071] Under normal conditions, the slider 3321 is located on the side of the slide rail 3312 close to the rotary motor 334. At this time, there is a gap between the end of the circumferential cutting blade 332 and the inner wall of the UV repair tube 5. When circumferential cutting is required, the lead screw motor 3332 drives the lead screw to rotate, so that the lead screw nut 3331 drives the circumferential cutting blade 332 to move radially toward the UV repair tube 5, so that the end of the circumferential cutting blade 332 penetrates the UV repair tube 5. Then, the rotary motor 334 drives the mounting sleeve 331 to rotate, so that the cutting edge of the circumferential cutting blade 332 circumferentially cuts the shielding area of ​​the UV repair tube 5.

[0072] Reference Figure 4 and Figure 9The mounting bracket 34 has a connector 343 on its end face for inserting into the lamp holder 41 of the connecting component 4. The connector 343 is a column with a rectangular cross-section. The lamp holder 41 has a slot 411 for inserting the connector 343, and a locking hole 412 on its side wall that connects to the slot 411. A locking screw 413 for pressing the side wall of the connector 343 is arranged in the locking hole 412 of the lamp holder 41, and the locking screw 413 and the locking hole 412 are threadedly engaged. When installing the UV repair tube 5, first remove the mounting bracket 34 of one of the travel end caps 3, then place one end of the UV repair tube 5 on the other travel end cap 3 and fix it, and then insert and fix the connector 343 and the lamp holder 41, so that the other end of the UV repair tube 5 is fixedly installed on the travel end cap 3.

[0073] Reference Figure 2 and Figure 10 The travel end cap 3 also has circumferentially arranged travel legs 37 on its end face away from the connecting assembly 4 for traveling within the pipe. Each travel leg 37 includes four support brackets 371 spaced circumferentially along the axis of the travel end cap 3 and sliding plates 372 connected to the ends of the support brackets 371. A pulley is rotatably provided at the end of each support bracket 371 away from the travel end cap 3 for abutting against the inner wall of the pipe 6 to be repaired. A sliding seat 38 for sliding the sliding plates 372 is welded onto the end face of the travel end cap 3. A sliding groove 381 is formed on the side wall of the sliding seat 38 for radial sliding of the sliding plates 372. The end face of the sliding seat 38 has a fixing hole 382 communicating with the sliding groove 381, and a clamping bolt 383 for clamping the sliding plates 372 is threaded into the fixing hole 382.

[0074] Example 2:

[0075] Combination Figures 1 to 11 This application discloses a trenchless pipeline repair method, which uses the trenchless pipeline repair device described in Embodiment 1, and includes the following steps:

[0076] S1, seal both ends of the inside of the pipe 6 to be repaired, with the two ends of the pipe 6 to be repaired corresponding to the drainage well, and then dredge the inside of the pipe 6 to be repaired and clean the garbage and water to both ends to be discharged from the drainage well;

[0077] S2, Place the remote-controlled car equipped with a camera into the pipe 6 to be repaired, control the remote-controlled car to move in the underground pipe, and use the camera to find the defect points inside the pipe 6 to be repaired and locate the defect points.

[0078] S3, select a repair trolley 1 that is compatible with the inner wall of the pipe 6 to be repaired, install the UV repair tube 5, take out the plug 343 and plug groove 411 of one travel end cover 3, then put the UV repair tube 5 on the connecting assembly 4 and place it on the sealing joint 31 of the other travel end cover 3, then insert the plug 343 into the plug groove 411 and tighten it with the locking screw 413 to fix the UV repair tube 5 between the two travel end covers 3;

[0079] S4, place the repair trolley 1 into the pipe 6 to be repaired, and move the repair trolley 1 to the defect point inside the pipe 6 to be repaired by the traction rope 7;

[0080] S5, the inflation device 2 inflates the travel end cover 3, so that the outer wall of the UV repair tube 5 abuts against the inner wall of the pipe to be repaired 6. Then the inflation device 2 inflates the support airbag, so that the support airbag supports and shields both ends of the UV repair tube 5.

[0081] S6, the UV lamp 42 is powered on through the power transmission line, the UV lamp 42 emits ultraviolet light, which irradiates the UV repair tube 5, causing the UV repair tube 5 to begin to cure, and then left to stand for a period of time.

[0082] S7. After the UV repair tube 5 is completely cured, the inflation / deflation device 2 deflates the UV repair tube 5 and the shielding airbag 322 in sequence, causing the shielding area in the UV repair tube 5 to indent inward. The lead screw motor 3332 drives the ring cutting blade 332 to move radially toward the inner wall of the UV repair tube 5, so that the ring cutting blade 332 penetrates the UV repair tube 5. Then, the rotary motor 334 drives the mounting sleeve 331 to rotate circumferentially, so that the ring cutting blade 332 rings the shielding area, and the cured area in the UV repair tube 5 is separated from the walking end cap 3.

[0083] S8, the repair trolley 1 is removed from the repaired pipe by the traction rope 7, and the objects blocking both ends of the pipe are removed, thus completing the pipe repair.

[0084] 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, characterized by, The utility model provides a repair trolley (1) and the inflation and deflation device (2) for the inflation and deflation of repair trolley (1), the repair trolley (1) includes two walking end covers (3) and the connecting assembly (4) connected two walking end covers (3), the connecting assembly (4) has the ultraviolet lamp (42) for solidifying UV repair pipe (5), the walking end cover (3) has the sealing joint (31) for the sealed installation of UV repair pipe (5), the shielding assembly (32) for supporting UV repair pipe (5) between two sealing joints (31), the girdling mechanism (33) between sealing joint (31) and shielding assembly (32), the sealing joint (31) has the mounting bracket (34) for the installation of shielding assembly (32) and girdling mechanism (33), the mounting bracket (34) is cylindrical and coaxially arranged with ultraviolet lamp (42), The area between shielding assembly (32) and sealing joint (31) of UV repair pipe (5) is shielding area, and the area between two shielding assemblies (32) of UV repair pipe (5) is solidification area, The shielding assembly (32) includes shielding plate (321) fixed to the mounting bracket (34) and shielding air bag (322) installed on the outer circumferential side wall of the shielding plate (321), the shielding air bag (322) is inflated, and both ends of the UV repair pipe (5) are supported and shielded, The girdling mechanism (33) includes mounting sleeve (331) rotatably mounted on the mounting bracket (34), girdling blade (332) radially slidably mounted on the outer side wall of the mounting sleeve (331), driving assembly (333) mounted on the mounting sleeve (331) and driving the radial movement of the girdling blade (332), and rotary motor (334) mounted on the mounting bracket (34) and driving the rotation of the mounting sleeve (331) around the mounting bracket (34), the inner wall of the mounting sleeve (331) is provided with an inner tooth surface (3311), and the output shaft of the rotary motor (334) is provided with a rotary gear (3341) matched with the inner tooth surface (3311) of the mounting sleeve (331); The outer side wall of the mounting sleeve (331) is provided with radially arranged sliding rails (3312), and the girdling blade (332) is provided with sliding blocks (3321) matched with the sliding rails (3312); the driving assembly (333) includes lead screw nut (3331) mounted on the girdling blade (332) and lead screw motor (3332) mounted on the mounting sleeve (331) and matched with the lead screw nut (3331); The lead screw motor (3332) drives the rotation of the lead screw, drives the radial movement of the girdling blade (332), and the rotary motor (334) circumferentially girdles the shielding area of the UV repair pipe (5) by the girdling blade (332). The sealing joint (31) is further provided with an annular seal (313) on the end face towards the connecting assembly (4), the annular seal (313) comprises an abutting ring (3131) abutting with the outer edge of the end face of the sealing joint (31) and an elastic flange (3132) for abutting with the inner wall of the UV repair pipe (5), the elastic flange (3132) is inclined outwardly towards the direction of the ultraviolet lamp (42).

2. A trenchless pipe rehabilitation device according to claim 1, wherein, The outer side wall of the shielding plate (321) is circumferentially provided with an annular arrangement groove (3211) for arranging the shielding air bag (322); the shielding air bag (322) is connected with the gas charging and discharging device (2) so that the shielding air bag (322) has an inflated state and a contracted state; when the shielding air bag (322) is in the inflated state, the shielding air bag (322) is supported on the inner wall of the UV repair pipe (5); when the shielding air bag (322) is in the contracted state, the shielding air bag (322) is located in the annular arrangement groove (3211).

3. A trenchless pipe rehabilitation device according to claim 2, wherein, The shielding air bag (322) has a folded corrugated ring (3221).

4. A trenchless pipe rehabilitation device according to claim 1, wherein, The ring cutting blade (332) is attached to the end face of the shielding plate (321) towards the sealing joint (31).

5. A trenchless pipe rehabilitation device according to claim 1, wherein, The end face of the mounting bracket (34) is provided with a plug joint (343) for plug-in cooperation with the connecting assembly (4), the connecting assembly (4) has a plug-in groove (411) for inserting the plug joint (343), the connecting assembly (4) has a locking hole (412) communicating with the side wall of the plug-in groove (411), and a locking screw (413) for pressing the plug joint (343) is arranged in the locking hole (412).

6. A trenchless pipe rehabilitation device according to claim 1, wherein, A plurality of walking feet (37) are arranged on the outer end face of the walking end cover (3), the walking feet (37) comprise a foot support (371) arranged circumferentially along the axis of the walking end cover (3) and a sliding piece (372) connected to the end of the foot support (371) and slidingly mounted on the walking end cover (3), and the walking end cover (3) has a sliding seat (38) for the sliding piece (372) to slide radially.

7. A trenchless pipe rehabilitation method of a pipe rehabilitation apparatus according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: S1, the two ends of the internal of the pipeline to be repaired (6) are blocked, the two ends of the pipeline to be repaired (6) correspond to the drainage well (61), then the internal of the pipeline to be repaired (6) is dredged and the garbage and water are cleaned to the two ends and discharged from the drainage well (61); S2, the remote control trolley provided with a camera is put into the pipeline to be repaired (6), the remote control trolley is controlled to move in the underground pipeline, the camera is used to find the defect points in the internal of the pipeline to be repaired (6), and the defect points are positioned; S3, select the repair trolley (1) matched with the inner wall of the pipeline (6) to be repaired, install the UV repair pipe (5), take out the plug-in connector (343) and the plug-in slot (411) of one walking end cover (3), then place the UV repair pipe (5) sleeved with the connecting assembly (4) on the sealing connector (31) of the other walking end cover (3), then insert the plug-in connector (343) into the plug-in slot (411) and tighten it by the locking screw (413), so as to fix the UV repair pipe (5) between the two walking end covers (3); S4, put the repair trolley (1) into the pipeline (6) to be repaired, and move the repair trolley (1) to the defect point inside the pipeline (6) to be repaired through the traction rope (7); S5, inflate the walking end cover (3) through the inflation device (2), so that the outer wall of the UV repair pipe (5) abuts against the inner wall of the pipeline (6) to be repaired, and then inflate the blocking air bag (322) through the inflation device (2), so that the blocking air bag (322) supports and blocks the two ends of the UV repair pipe (5); S6, power on the ultraviolet lamp (42) through the power transmission line, the ultraviolet lamp (42) emits ultraviolet light, irradiates the UV repair pipe (5), and makes the UV repair pipe (5) start to solidify and stand for a period of time; S7, after the UV repair pipe (5) is completely solidified, the inflation device (2) deflates the blocking air bag (322) and the repair trolley (1) in turn, and the blocking area in the UV repair pipe (5) is concave inward; the lead screw motor (3332) drives the ring cutting blade (332) to move radially towards the inner wall of the UV repair pipe (5), so that the ring cutting blade (332) penetrates the UV repair pipe (5), and then the rotary motor (334) drives the installation sleeve (331) to rotate circumferentially, so as to realize the ring cutting of the blocking area by the ring cutting blade (332), so that the solidified area in the UV repair pipe (5) is separated from the walking end cover (3); S8, take out the repair trolley (1) from the repaired pipeline through the traction rope (7), take out the object blocking the two ends of the pipeline, and complete the repair of the pipeline.

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