A trenchless pipeline repair device and pipeline repair method

Abstract

The present invention relates to the technical field of pipeline repair, and provides a trenchless pipeline repair device and a pipeline repair method, including a first fixed seat, a second fixed seat and a support mechanism, wherein the support mechanism includes a plurality of support units; the support unit includes a first support, a second support, a first support arm, a second support arm, a support plate and a driving component, one end of the first support arm is hingedly connected to the first support, one end of the second support arm is hingedly connected to the second support, and the middle of the first support arm is hingedly connected to the middle of the second support arm; one end of the first support arm away from the first support and one end of the second support arm away from the second support are both hingedly connected to the inner side of the support plate in a slidable manner; the driving component drives the first support and the second support to move closer to or away from each other. The present invention, by providing a trenchless pipeline repair device with a support mechanism, can realize heating and curing after the repair hose is stretched, which greatly simplifies the operation of pipeline repair.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline repair, and in particular to a trenchless pipeline repair device and a pipeline repair method. Background Art

[0002] Municipal pipelines are one of the important projects of urban infrastructure, among which drainage pipelines are mainly used to collect and discharge domestic sewage, industrial wastewater and rainwater in a timely manner to ensure the city's environmental sanitation and the safety of people's lives and property. Drainage pipelines are generally made of concrete, metal or plastic. After the pipelines have been used for a certain period of time, the inner wall surface of the pipeline may peel off, causing the pipeline wall to become thinner or even partially collapsed, causing pipeline blockage and water leakage, seriously affecting the city's environmental sanitation and threatening the safety of life and property.

[0003] For this reason, the CIPP in-situ curing method is commonly used in the prior art to repair damaged pipelines without excavating the land. The repair principle is: first, the resin-soaked hose is laid flat into the pipeline to be repaired through the corresponding equipment, and then one end of the hose is bundled and ventilated from the other end to expand the hose so that the outer wall of the hose fits the inner wall of the repaired pipeline, and then a UV lamp chain is placed in the expanded hose, and the hose is cured by irradiation with UV lamps, and finally a new continuous pipeline with full structural strength is formed inside the pipeline to be repaired. However, in actual applications, it is found that the above-mentioned repair technology requires first ventilating the hose to expand it and then heating it for curing. The entire repair process is cumbersome and the construction efficiency is low. Summary of the invention

[0004] The first object of the present invention is to provide a trenchless pipeline repair device, which can simplify the operation of repairing the pipeline, realize the operations of expanding and heating the hose to cure at the same time, and improve the repair efficiency.

[0005] The second object of the present invention is to provide a pipeline repair method, which makes the process of repairing the pipeline simpler and more convenient.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] In one aspect, the present invention provides a trenchless pipeline repair device, comprising a first fixing seat, a second fixing seat, and a support mechanism disposed between the first fixing seat and the second fixing seat, wherein the support mechanism comprises a plurality of support units distributed in an annular shape;

[0008] The support unit includes a first support, a second support, a first support arm, a second support arm, a support plate and a driving component, one end of the first support arm is hingedly connected to the first support, one end of the second support arm is hingedly connected to the second support, and the middle part of the first support arm is hingedly connected to the middle part of the second support arm; one end of the first support arm away from the first support and one end of the second support arm away from the second support are both slidably hingedly connected to the inner side of the support plate; the driving component drives the first support and the second support to move closer to or away from each other.

[0009] Optionally, the support unit further includes a heating component, which includes a mounting seat, a mounting column, an ultraviolet lamp, a first telescopic column, and a second telescopic column, wherein the ultraviolet lamp is mounted on the mounting column and is located below the support plate, and the bottom of the mounting column extends into the mounting seat and is slidably connected to the mounting seat; one end of the first telescopic column is hingedly connected to the first support arm, and the other end thereof extends horizontally into the mounting seat and is slidably connected to the mounting seat; one end of the second telescopic column is hingedly connected to the second support arm, and the other end thereof extends horizontally into the mounting seat and is slidably connected to the mounting seat;

[0010] A first wedge-shaped surface and a second wedge-shaped surface are provided at the bottom of the mounting column, a third wedge-shaped surface is provided at one end of the first telescopic column away from the first support arm, and the third wedge-shaped surface is adapted to the first wedge-shaped surface, and a fourth wedge-shaped surface is provided at one end of the second telescopic column away from the second support arm, and the third wedge-shaped surface is adapted to the second wedge-shaped surface.

[0011] Furthermore, the mounting seat is provided with a slide groove, the bottom of the mounting column is slidably arranged in the slide groove, and the bottom of the mounting column is provided with a buffer spring; one end of the buffer spring is connected to the mounting column, and the other end thereof is connected to the mounting seat.

[0012] Furthermore, a guide mechanism is provided on the second fixing seat, and the guide mechanism includes a plurality of guide units distributed in an annular shape along the circumference of the second fixing seat;

[0013] The guide unit includes an articulated seat and a connecting column. The articulated seat is provided with an articulated shaft. Both ends of the articulated shaft are rotatably connected to the articulated seat. One end of the connecting column is fixedly connected to the articulated shaft. The other end of the connecting column is connected to a freely rotatable roller. A torsion spring is sleeved on the outer wall of the articulated shaft. One end of the torsion spring is fixedly connected to the articulated seat, and the other end of the torsion spring is fixedly connected to the connecting column.

[0014] Furthermore, it also includes a traction mechanism, which includes a traction motor, a rotating column and a traction rope, the rotating column is drivingly connected to the traction motor, one end of the traction rope is wound around the outer wall of the rotating column, and the other end of the traction rope is connected to the first fixed seat.

[0015] Optionally, the driving component includes a driving shaft and a guide rod arranged parallel to the driving shaft, one end of the driving shaft is rotatably connected to the first fixed seat, and the other end of the driving shaft extends into the second fixed seat and is connected to a driving device; the outer wall of the driving shaft is respectively provided with a first thread segment and a second thread segment with opposite thread directions, the first support is sleeved on the outer wall of the driving shaft and threadedly connected to the first thread segment, the second support is sleeved on the outer wall of the driving shaft and threadedly connected to the second thread segment, one end of the guide rod is fixedly connected to the first fixed seat, and the other end of the guide rod is fixedly connected to the second fixed seat after passing through the first support and the second support in sequence; the driving device is used to drive the driving shaft to rotate.

[0016] Furthermore, the driving device includes a driving motor and a main gear, and the main gear is drivingly connected to the driving motor;

[0017] The driving component also includes a secondary gear, which is sleeved on the driving shaft and meshed with the main gear.

[0018] Furthermore, there are multiple guide rods, and the multiple guide rods are distributed in a ring shape around the driving shaft.

[0019] Optionally, a side of the first fixing seat away from the second fixing seat is in an arc-shaped structure.

[0020] In another aspect, the present invention provides a pipeline repair method, using the trenchless pipeline repair device as described above, comprising the following steps:

[0021] S1. Lay the repair hose flat in the pipe to be repaired between the first shaft and the second shaft, and install the traction mechanism in an appropriate position in the second shaft;

[0022] S2. The repair hose near one end of the first shaft is stretched to a certain extent, the first fixing seat and the support mechanism are sequentially placed into the repair hose with the first fixing seat as the front end, and the traction rope is connected to the first fixing seat;

[0023] S3. Using the driving component of each support unit to drive the first support and the second support to approach each other, at this time, the support plates of all the support units distributed in an annular shape stretch the repair hose, so that the outer wall of the repair hose fits with the inner wall of the pipe to be repaired, and using the ultraviolet lamp to continuously heat and cure the stretched repair hose;

[0024] S4. After the stretched repair hose is solidified, the traction motor is started, and the connecting columns of the plurality of guide units are rotated around the hinge shaft by a certain angle. After the second fixing seat smoothly enters the repair hose, the traction motor is turned off and the connecting column is loosened, so that the roller fits with the inner wall of the solidified repair hose. At this time, the next section of the repair hose is stretched under the action of the support plate, and the ultraviolet lamp continues to heat and solidify the stretched section of the repair hose;

[0025] S5. After the section of the repair hose that has been stretched open is solidified, restart the traction motor, use the support plate to stretch the next section of the repair hose, then turn off the traction motor, and use the ultraviolet lamp to heat and solidify the section of the repair hose;

[0026] S6. After the entire repair hose is heated and cured, take out the trenchless pipeline repair device and inspect the repair hose after heating and curing.

[0027] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0028] 1. The present invention is reasonably designed. By providing a trenchless pipeline repair device with a supporting mechanism, the repair hose can be stretched open without ventilation in the repair hose during pipeline repair, and the stretched repair hose can be heated and cured, which greatly simplifies the operation of pipeline repair and improves the efficiency of pipeline repair.

[0029] 2. The multiple support plates used to support the repair hose in the present invention can move under the action of the first support arm and the second support arm, so that the non-excavation pipeline repair device can be applied to the repair of pipelines with various different diameters, greatly improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1A schematic diagram of the partial structure of a trenchless pipeline repair device provided in Example 1 of the present invention;

[0032] Figure 2 A side view of a support plate provided in Example 1 of the present invention;

[0033] Figure 3 for Figure 1 The enlarged cross-sectional view at point A in the middle;

[0034] Figure 4 for Figure 1 The enlarged view of point B in the middle;

[0035] Figure 5 A partial side view of the driving device provided in Example 1 of the present invention;

[0036] Figure 6 This is a construction schematic diagram of the pipeline repair method provided in Example 2 of the present invention.

[0037] Icon: 100- Trenchless Pipe Repair Device, 101- First Fixing Seat, 102- Second Fixing Seat, 103- First Support Seat, 104- Second Support Seat, 105- First Support Arm, 106- Second Support Arm, 107- Support Plate, 108- Mounting Seat, 109- Mounting Column, 1010- UV Lamp, 1011- First Telescopic Column, 1012- Second Telescopic Column, 1013- Buffer Spring, 1014- Hinge Connecting seat, 1015-connecting column, 1016-articulated shaft, 1017-roller, 1018-torsion spring, 1019-traction motor, 1020-rotating column, 1021-traction rope, 1022-driving shaft, 1023-guide rod, 1024-driving motor, 1025-main gear, 1026-secondary gear, 200-repair hose, 300-pipeline to be repaired, 400-first vertical shaft, 500-second vertical shaft. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Example 1

[0042] A trenchless pipeline repair device 100 is used to open a repair hose 200 laid flat inside a pipeline 300 to be repaired during the process of repairing the pipeline. Figure 1 and Figure 2 The trenchless pipe repair device 100 includes a first fixing seat 101, a second fixing seat 102, and a support mechanism disposed between the first fixing seat 101 and the second fixing seat 102. The support mechanism includes a plurality of support units distributed in an annular shape. In this embodiment, the number of the support units is four. It should be noted that in order to prevent the first fixing seat 101 from scratching the inner wall of the repair hose 200 when the first fixing seat 101 moves along the length direction of the repair hose 200 as much as possible, the side of the first fixing seat 101 away from the second fixing seat 102 is in an arc-shaped structure.

[0043] The support unit includes a first support 103, a second support 104, a first support arm 105, a second support arm 106, a support plate 107 and a driving component. One end of the first support arm 105 is hingedly connected to the first support 103, one end of the second support arm 106 is hingedly connected to the second support 104, and the middle part of the first support arm 105 is hingedly connected to the middle part of the second support arm 106; one end of the first support arm 105 away from the first support 103 and one end of the second support arm 106 away from the second support 104 are both hingedly connected to the support plate 107. 07 is hingedly connected to the inner side of the support plate 107 so as to be slidable; in this embodiment, the inner side of the support plate 107 is the side facing the driving component, and a slideway is provided on the inner side of the support plate 107, and a freely slidable slider is provided in the slideway, and the number of the sliders is two, and the end of the first support arm 105 away from the first support 103 is hingedly connected to one of the sliders, and the end of the second support arm 106 away from the second support 104 is hingedly connected to the other slider; the driving component drives the first support 103 and the second support 104 to move closer to or away from each other. It should be noted that in order to make the support plate 107 fit the inner wall of the pipe as closely as possible, the outer side of the support plate 107 is in an arc-shaped structure and is adapted to the curvature of the inner wall of the pipe.

[0044] Through the above arrangement, in actual application, the first support 103 and the second support 104 are driven to approach each other by the driving component, so that the first support arm 105 and the second support arm 106 rotate around the hinge point in the middle of the two, so that the support plate 107 moves away from the first support 103 and the second support 104 under the action of the first support arm 105 and the second support arm 106, so that the repair hose 200 is stretched open under the joint action of multiple support plates 107, so that the outer wall of the repair hose 200 fits the inner wall of the pipeline 300 to be repaired. On the contrary, when the first support 103 and the second support 104 are driven away from each other by the driving component, the support plate 107 moves toward the first support 103 and the second support 104, so as to facilitate the storage of the non-excavation pipeline repair device 100, and at the same time, the non-excavation pipeline repair device 100 can be applied to the repair of pipelines with various different diameters, thereby improving the practicality of the device.

[0045] In this embodiment, please refer to Figure 3 The support unit further includes a heating component for heating and curing the repair hose 200 , and the heating component includes a mounting seat 108 , a mounting column 109 , an ultraviolet lamp 1010 , a first telescopic column 1011 and a second telescopic column 1012 .

[0046] Among them, the ultraviolet lamp 1010 is installed on the top of the mounting column 109 and is located below the support plate 107. The bottom of the mounting column 109 extends into the mounting seat 108 and is slidably connected to the mounting seat 108; one end of the first telescopic column 1011 is hingedly connected to the first support arm 105, and the other end thereof extends horizontally into the mounting seat 108 and is slidably connected to the mounting seat 108; one end of the second telescopic column 1012 is hingedly connected to the second support arm 106, and the other end thereof extends horizontally into the mounting seat 108 and is slidably connected to the mounting seat 108.

[0047] At the same time, a first wedge-shaped surface and a second wedge-shaped surface are provided at the bottom of the mounting column 109, a third wedge-shaped surface is provided at the end of the first telescopic column 1011 away from the first support arm 105, and the third wedge-shaped surface is adapted to the first wedge-shaped surface, and a fourth wedge-shaped surface is provided at the end of the second telescopic column 1012 away from the second support arm 106, and the third wedge-shaped surface is adapted to the second wedge-shaped surface.

[0048] By means of the above arrangement, when the first support 103 and the second support 104 are close to each other, the angle between the first support arm 105 and the second support arm 106 is reduced, so that the first support arm 105 drives the end of the first telescopic column 1011 located inside the mounting column 109 to slide toward the second telescopic column 1012 in the horizontal direction, and the second support arm 106 drives the end of the second telescopic column 1012 located inside the mounting column 109 to slide toward the first telescopic column 1011 in the horizontal direction, so that the third wedge-shaped surface of the first telescopic column 1011 is used to push the first telescopic column 1011 upward. The first wedge-shaped surface of the mounting column 109 is pushed, and the fourth wedge-shaped surface of the second telescopic column 1012 pushes the second wedge-shaped surface of the mounting column 109, so as to realize the top of the mounting column 109 from the mounting seat 108, so as to realize that when the support plate 107 opens the repair hose 200, the distance between the ultraviolet lamp 1010 and the support plate 107 is kept unchanged as much as possible, so as to realize the position of the ultraviolet lamp 1010 according to the pipe diameter of the pipeline, so that the ultraviolet lamp 1010 is always in the best heating and curing position, so that the heating and curing effect is not affected by the pipe diameter. At the same time, by setting the first telescopic column 1011 and the second telescopic column 1012, the structural strength of the first support arm 105 and the second support arm 106 can be improved, so that it can better support the above-mentioned support plate 107.

[0049] At the same time, in order to improve the stability of the mounting column 109 when sliding and prevent the mounting column 109 from sliding out of the mounting seat 108, the mounting seat 108 is provided with a slide groove, and the bottom of the mounting column 109 is slidably arranged in the slide groove, and the mounting column 109 has a certain friction with the inner wall of the slide groove to prevent the mounting column 109 of the support unit located at the bottom from sliding downward under the action of its own gravity to change the position of the ultraviolet lamp 1010; a buffer spring 1013 is provided at the bottom of the mounting column 109; one end of the buffer spring 1013 is connected to the mounting column 109, and the other end thereof is connected to the mounting seat 108. The number of the buffer springs 1013 is not limited here, and can be selected according to actual needs. It should be noted that when the first telescopic column 1011 and the second telescopic column 1012 do not push the mounting column 109, the buffer spring 1013 is in a contracted state.

[0050] In addition, in order to enable the trenchless pipeline repair device 100 to move more smoothly in the pipeline, a guide mechanism is also provided on the second fixed seat 102, and the guide mechanism includes a plurality of guide units distributed in a ring shape along the circumference of the second fixed seat 102. In this embodiment, the number of guide units is four.

[0051] Please refer to Figure 4The guide unit includes an articulated seat 1014 and a connecting column 1015. The articulated seat 1014 is provided with an articulated shaft 1016. Both ends of the articulated shaft 1016 are rotatably connected to the articulated seat 1014. One end of the connecting column 1015 is fixedly connected to the articulated shaft 1016. The other end of the connecting column 1015 is connected to a freely rotatable roller 1017. A torsion spring 1018 is sleeved on the outer wall of the articulated shaft 1016. One end of the torsion spring 1018 is fixedly connected to the articulated seat 1014, and the other end is fixedly connected to the connecting column 1015. By providing the torsion spring 1018, it is convenient to place the guide mechanism in the repair hose 200 at the initial stage of pipeline repair, and the connecting column 1015 can make the roller 1017 fit with the inner wall of the pipeline under the action of the torsion spring 1018 after rotating around the articulated shaft 1016, so as to be applicable to pipelines of various different diameters.

[0052] In order to facilitate the movement of the trenchless pipeline repair device 100 along the length direction of the repair hose 200 to achieve heating and curing of the entire repair hose 200, the trenchless pipeline repair device 100 also includes a traction mechanism, which includes a traction motor 1019, a rotating column 1020 and a traction rope 1021. The rotating column 1020 is in transmission connection with the traction motor 1019, one end of the traction rope 1021 is wound around the outer wall of the rotating column 1020, and the other end of the traction rope 1021 is connected to the first fixed seat 101. The traction motor 1019 drives the rotating column 1020 to rotate, so that when the traction rope 1021 is continuously wound around the rotating column 1020, the first fixed seat 101 can be pulled by the traction rope 1021 to move along the length direction of the repair hose 200.

[0053] In this embodiment, the above-mentioned driving component includes a driving shaft 1022 and a guide rod 1023 arranged parallel to the driving shaft 1022, one end of the driving shaft 1022 is rotatably connected to the first fixed seat 101, and the other end thereof extends into the second fixed seat 102 and is connected to a driving device; the outer wall of the driving shaft 1022 is respectively provided with a first thread segment and a second thread segment with opposite thread directions, the first support 103 is sleeved on the outer wall of the driving shaft 1022 and is threadedly connected to the first thread segment, the second support 104 is sleeved on the outer wall of the driving shaft 1022 and is threadedly connected to the second thread segment, one end of the guide rod 1023 is fixedly connected to the first fixed seat 101, and the other end thereof passes through the first support 103 and the second support 104 in sequence and is fixedly connected to the second fixed seat 102; the driving device is used to drive the driving shaft 1022 to rotate. In order to improve the stability of the first support 103 and the second support 104 during movement, the number of guide rods 1023 is multiple, and the multiple guide rods 1023 are distributed in a ring around the driving shaft 1022. In this embodiment, each driving component has two guide rods 1023. When the driving device drives the driving shaft 1022 to rotate forward, the first support 103 threadedly connected to the first thread segment of the driving shaft 1022 and the second support 104 threadedly connected to the second thread segment of the driving shaft 1022 move toward each other along the axial direction of the driving shaft 1022. When the driving device drives the driving shaft 1022 to reverse, the first support 103 and the second support 104 move in the opposite direction along the axial direction of the driving shaft 1022, thereby achieving the first support 103 and the second support 104 to move closer to or farther from each other. The use of threaded transmission makes the first support 103 and the second support 104 more stable during movement.

[0054] At the same time, in order to save resources as much as possible, the driving device includes a driving motor 1024 and a main gear 1025, the main gear 1025 is connected to the driving motor 1024; and the driving component also includes a sub-gear 1026, the sub-gear 1026 is sleeved on the driving shaft 1022 and meshes with the main gear 1025. Please refer to Figure 5 In this embodiment, the number of supporting units is four, and the number of sub-gears 1026 is also four, and they are distributed in a circumferential ring around the main gear 1025 and mesh with the main gear 1025. Through this arrangement, when the driving motor 1024 drives the main gear 1025 to rotate, the main gear 1025 can simultaneously drive the driving shafts 1022 of all supporting units to rotate in the same direction, thereby realizing that one driving motor 1024 drives all supporting plates 107 to move simultaneously, thereby reducing the cost invested in the manufacture of the device.

[0055] It should be noted that, in this embodiment, the power sources used by the ultraviolet lamp 1010, the traction motor 1019 and the drive motor 1024 can be independently set at corresponding positions as needed, and no further details will be given here.

[0056] Example 2

[0057] A pipeline repair method, using the non-excavation pipeline repair device 100 as described in the above embodiment 1, please refer to Figure 6 , including the following steps:

[0058] S1. The repair hose 200 is laid flat in the pipe 300 to be repaired between the first shaft 400 and the second shaft 500, and the traction mechanism is installed in an appropriate position in the second shaft 500;

[0059] S2. The repair hose 200 near one end of the first shaft 400 is stretched to a certain extent, the first fixing seat 101 is placed in the front end of the first fixing seat 101 and the support mechanism are placed in the repair hose 200 in sequence, and the traction rope 1021 is connected to the first fixing seat 101;

[0060] S3. The driving component of each support unit drives the first support 103 and the second support 104 to approach each other. At this time, the support plates 107 of all the support units distributed in an annular shape stretch the repair hose 200 so that the outer wall of the repair hose 200 fits with the inner wall of the pipe 300 to be repaired, and the UV lamp 1010 is used to continuously heat and cure the stretched repair hose 200;

[0061] S4. After the stretched repair hose 200 is solidified, the traction motor 1019 is started, and the connecting column 1015 of the plurality of guide units is rotated around the hinge shaft 1016 to a certain angle. After the second fixing seat 102 smoothly enters the repair hose 200, the traction motor 1019 is turned off and the connecting column 1015 is loosened, so that the roller 1017 fits the inner wall of the solidified repair hose 200. At this time, the next section of the repair hose 200 is stretched under the action of the support plate 107, and the ultraviolet lamp 1010 continues to heat and solidify the stretched section of the repair hose 200;

[0062] S5. After the section of the repair hose 200 is opened and solidified, the traction motor 1019 is restarted, and the traction motor 1019 is turned off after the next section of the repair hose 200 is opened by the support plate 107, and the ultraviolet lamp 1010 is used to heat and solidify the section of the repair hose 200;

[0063] S6. Heat and cure the remaining repair hose 200 according to the operation of step S5. After the entire repair hose 200 is heated and cured, take out the trenchless pipeline repair device 100 and inspect the repair hose 200 after heating and curing.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A trenchless pipeline repair device, characterized in that: It comprises a first fixing seat, a second fixing seat and a supporting mechanism arranged between the first fixing seat and the second fixing seat, wherein the supporting mechanism comprises a plurality of supporting units distributed in an annular shape; The support unit comprises a first support, a second support, a first support arm, a second support arm, a support plate and a driving component, wherein one end of the first support arm is hingedly connected to the first support, one end of the second support arm is hingedly connected to the second support, and the middle part of the first support arm is hingedly connected to the middle part of the second support arm; one end of the first support arm away from the first support and one end of the second support arm away from the second support are both hingedly connected to the inner side of the support plate in a slidable manner; the driving component drives the first support and the second support to move closer to or away from each other; The support unit further includes a heating component, which includes a mounting seat, a mounting column, an ultraviolet lamp, a first telescopic column, and a second telescopic column. The ultraviolet lamp is mounted on the mounting column and is located below the support plate. The bottom of the mounting column extends into the mounting seat and is slidably connected to the mounting seat; one end of the first telescopic column is hingedly connected to the first support arm, and the other end thereof extends horizontally into the mounting seat and is slidably connected to the mounting seat; one end of the second telescopic column is hingedly connected to the second support arm, and the other end thereof extends horizontally into the mounting seat and is slidably connected to the mounting seat; The bottom of the mounting column is provided with a first wedge-shaped surface and a second wedge-shaped surface, the end of the first telescopic column away from the first support arm is provided with a third wedge-shaped surface, the third wedge-shaped surface is matched with the first wedge-shaped surface, and the end of the second telescopic column away from the second support arm is provided with a fourth wedge-shaped surface, the third wedge-shaped surface is matched with the second wedge-shaped surface; The mounting seat is provided with a slide groove, the bottom of the mounting column is slidably arranged in the slide groove, and the bottom of the mounting column is provided with a buffer spring; one end of the buffer spring is connected to the mounting column, and the other end thereof is connected to the mounting seat; The driving component includes a driving shaft and a guide rod arranged parallel to the driving shaft, one end of the driving shaft is rotatably connected to the first fixed seat, and the other end of the driving shaft extends into the second fixed seat and is connected to a driving device; the outer wall of the driving shaft is respectively provided with a first thread segment and a second thread segment with opposite thread directions, the first support is sleeved on the outer wall of the driving shaft and is threadedly connected to the first thread segment, the second support is sleeved on the outer wall of the driving shaft and is threadedly connected to the second thread segment, one end of the guide rod is fixedly connected to the first fixed seat, and the other end of the guide rod is fixedly connected to the second fixed seat after passing through the first support and the second support in sequence; the driving device is used to drive the driving shaft to rotate.

2. The trenchless pipeline repair device according to claim 1, characterized in that: The second fixing seat is also provided with a guide mechanism, and the guide mechanism includes a plurality of guide units distributed in an annular shape along the circumference of the second fixing seat; The guide unit includes an articulated seat and a connecting column. The articulated seat is provided with an articulated shaft. Both ends of the articulated shaft are rotatably connected to the articulated seat. One end of the connecting column is fixedly connected to the articulated shaft. The other end of the connecting column is connected to a freely rotatable roller. A torsion spring is sleeved on the outer wall of the articulated shaft. One end of the torsion spring is fixedly connected to the articulated seat, and the other end of the torsion spring is fixedly connected to the connecting column.

3. The trenchless pipeline repair device according to claim 2, characterized in that: It also includes a traction mechanism, which includes a traction motor, a rotating column and a traction rope. The rotating column is transmission-connected to the traction motor, one end of the traction rope is wound around the outer wall of the rotating column, and the other end of the traction rope is connected to the first fixing seat.

4. The trenchless pipeline repair device according to claim 1, characterized in that: The driving device comprises a driving motor and a main gear, and the main gear is drivingly connected to the driving motor; The driving component also includes a secondary gear, which is sleeved on the driving shaft and meshed with the main gear.

5. The trenchless pipeline repair device according to claim 1, characterized in that: There are multiple guide rods, and the multiple guide rods are distributed in a ring shape around the driving shaft.

6. The trenchless pipeline repair device according to claim 1, characterized in that: A side of the first fixing seat away from the second fixing seat is in an arc-shaped structure.

7. A pipeline repair method, using the trenchless pipeline repair device according to claim 3, characterized in that: The steps include: S1. Lay the repair hose flat in the pipe to be repaired between the first shaft and the second shaft, and install the traction mechanism in an appropriate position in the second shaft; S2. The repair hose near one end of the first shaft is stretched to a certain extent, the first fixing seat and the support mechanism are sequentially placed into the repair hose with the first fixing seat as the front end, and the traction rope is connected to the first fixing seat; S3. Using the driving component of each support unit to drive the first support and the second support to approach each other, at this time, the support plates of all the support units distributed in an annular shape stretch the repair hose, so that the outer wall of the repair hose fits with the inner wall of the pipe to be repaired, and using the ultraviolet lamp to continuously heat and cure the stretched repair hose; S4. After the stretched repair hose is solidified, the traction motor is started, and the connecting columns of the plurality of guide units are rotated around the hinge shaft by a certain angle. After the second fixing seat smoothly enters the repair hose, the traction motor is turned off and the connecting column is loosened, so that the roller fits with the inner wall of the solidified repair hose. At this time, the next section of the repair hose is stretched under the action of the support plate, and the ultraviolet lamp continues to heat and solidify the stretched section of the repair hose; S5. After the section of the repair hose that has been stretched open is solidified, restart the traction motor, use the support plate to stretch the next section of the repair hose, then turn off the traction motor, and use the ultraviolet lamp to heat and solidify the section of the repair hose; S6. After the entire repair hose is heated and cured, take out the trenchless pipeline repair device and inspect the repair hose after heating and curing.

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