Traction device and method suitable for insertion of folded lining pipe

Abstract

The invention relates to the technical field of pipeline repair, and particularly discloses a traction device and method suitable for insertion of a folded lining pipe. The device comprises a first driving assembly, a fixing ring, a second driving assembly and a traction rope, the first driving assembly comprises a first main body and a plurality of first power mechanisms; the first power mechanism comprises a first spring, a first connecting rod, a first supporting rod, a first rolling wheel, a first sliding block and a first power driver. The second driving assembly comprises a second main body and a plurality of second power mechanisms; the second power mechanism comprises a second spring, a second connecting rod, a second supporting rod, a crawler wheel and a second sliding block; the fixing ring is connected to the periphery of the lining pipe in a sleeving mode and detachably connected with the lining pipe. The first body and the second body are connected with two sides of the fixing ring; the pulling rope is connected to the front of the first body. And when the pipeline condition is complex, the first rolling wheels and the crawler wheels can keep abutting against the inner wall of the pipeline, smooth conveying of the lining pipe is achieved, and the applicability is high.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline repair, and in particular to a traction device and method suitable for inserting a folded liner pipe. Background Art

[0002] During long-term use, pipelines may be damaged by cracks, holes, etc. as they age and are affected by internal and external factors. For example, damage to chemical pipelines can lead to leakage of the transported medium, increasing safety risks and the risk of environmental pollution; damage to water supply and drainage pipelines can cause water leakage and erode the surrounding soil, and in severe cases, damage to infrastructure. Therefore, timely pipeline repair is required when pipelines are damaged to ensure safe and stable operation of the system.

[0003] Pipeline repair technology can be divided into excavation repair technology and trenchless repair technology according to construction conditions. Among them, excavation repair technology requires large-scale excavation and equipment replacement, with a long construction period and high construction cost; trenchless repair technology refers to a set of construction technology for repairing pipelines without excavating infrastructure or excavating infrastructure as little as possible. It has a small impact on infrastructure and low construction cost, so it is widely used. The commonly used method of trenchless repair technology is the folding lining method, which is to fold the liner pipe, place the liner pipe into the old pipe, and then restore the liner pipe to its original state through heating, pressurization and other methods to form the lining of the old pipe.

[0004] The existing folding liner method generally uses a pulling device to pull the liner into the old pipeline, which has poor adaptability to complex pipelines. For example, when there is a curved pipe section inside the old pipeline, the liner will contact the curved pipe section, which increases the friction of the liner, increases the difficulty of pulling, and causes wear of the liner. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a traction device and method suitable for the insertion of a folded liner pipe, so as to solve the problem that the existing folded liner method has poor applicability to complex pipelines.

[0006] In order to achieve the above technical objectives, the present application provides, in a first aspect, a traction device suitable for inserting a folded liner pipe, comprising: a first drive assembly, a fixing ring, a second drive assembly and a traction rope;

[0007] The first driving assembly includes: a first main body and a plurality of first power mechanisms;

[0008] A plurality of the first power mechanisms are distributed around the circumference of the first body;

[0009] The first power mechanism comprises: a first spring, a first connecting rod, a first support rod, a first roller, a first slider and a first power driver;

[0010] One end of the first connecting rod is hinged to the first body;

[0011] The first roller is disposed at the other end of the first connecting rod;

[0012] The first sliding block is disposed on the first main body, and the first sliding block can slide along the axial direction of the first main body;

[0013] One end of the first support rod is hinged to the first connecting rod, and the other end of the first support rod is hinged to the first sliding block;

[0014] One end of the first spring is connected to the first body, and the other end of the first spring is connected to the first slider;

[0015] The output end of the first power driver is connected to the first roller, so as to drive the first roller to rotate;

[0016] The second driving assembly includes: a second main body and a plurality of second power mechanisms;

[0017] A plurality of the second power mechanisms are distributed around the circumference of the second body;

[0018] The second power mechanism comprises: a second spring, a second connecting rod, a second support rod, a track wheel and a second slider;

[0019] One end of the second connecting rod is hinged to the second body;

[0020] The track wheel is arranged at the other end of the second connecting rod;

[0021] The second slider is disposed on the second body, and the second slider can slide along the axial direction of the second body;

[0022] One end of the second support rod is hinged to the second connecting rod, and the other end of the second support rod is hinged to the second sliding block;

[0023] One end of the second spring is connected to the second body, and the other end of the second spring is connected to the second slider;

[0024] The fixing ring is sleeved on the outer periphery of the inner liner pipe and is detachably connected to the inner liner pipe;

[0025] The rear of the first body is connected to the front of the fixing ring;

[0026] The second body is sleeved on the outer periphery of the inner liner pipe and connected to the rear of the fixing ring;

[0027] The traction rope is connected to the front of the first body.

[0028] Further, the first driving component includes: a processor;

[0029] The first drive assembly, the fixing ring and the second drive assembly travel in the pipeline;

[0030] The first power mechanism includes: a distance measuring sensor;

[0031] The distance measuring sensor is arranged on the first roller, and is used to measure the distance from the first roller to obstacles in the direction of travel to obtain distance data;

[0032] The first spring is an electrically controlled telescopic spring;

[0033] The processor is disposed in the first body, and the processor is electrically connected to the distance measuring sensor, the first power driver and the first spring;

[0034] The processor is used to calculate the shape of the pipe in front of the first body according to the multiple distance data, and to control the length of each of the first springs and the rotation speed of each of the first power drivers according to the pipe shape, so that the first roller fits the pipe wall during the movement.

[0035] Further, the second driving component includes: a second processor;

[0036] The second power mechanism includes: a second power driver;

[0037] The output end of the second power driver is connected to the track wheel for driving the track wheel to move;

[0038] The second spring is an electrically controlled telescopic spring;

[0039] The second processor is disposed on the second body, and the second processor is electrically connected to the processor, the second power driver and the first spring;

[0040] The second processor is used to control the length of each second spring and the rotation speed of each second power driver according to the shape of the pipeline, so that the track wheel abuts against the pipe wall of the pipeline during the travel process.

[0041] Furthermore, the track wheel comprises: a track and a plurality of second rollers;

[0042] A plurality of the second rollers are arranged at intervals along the axial direction of the second body and are sleeved in the crawler belt.

[0043] Further, the second power mechanism comprises: two second springs, two second connecting rods, two second support rods and two second sliding blocks;

[0044] Two second springs, two second connecting rods, two second support rods and two second sliding blocks are respectively arranged at the front end and the rear end of the crawler track.

[0045] Further, it also includes: a universal shaft;

[0046] The rear of the first body is connected to the front of the fixing ring through the universal shaft.

[0047] Further, the first drive assembly includes at least two;

[0048] At least two of the first drive assemblies are connected front and back via the universal shaft.

[0049] Further, the second driving assembly includes a plurality of;

[0050] A plurality of the second drive assemblies are arranged at intervals along the axial direction of the inner liner pipe, and two adjacent second drive assemblies are connected front and back through a composite rope.

[0051] Furthermore, a plurality of adjustable screws are arranged on the fixing ring along the circumferential direction;

[0052] The adjustable screw passes through the fixing ring and is connected to the liner pipe.

[0053] The second aspect of the present application provides a traction device method suitable for inserting a folded liner pipe, which is applied to any of the traction devices suitable for inserting a folded liner pipe described above, and includes:

[0054] S1, guiding the first drive assembly, the fixing ring, and the second drive assembly into the pipeline through a traction rope;

[0055] S2. While maintaining the traction of the traction rope, start the first power driver to drive the first roller to rotate;

[0056] S3. When the inner diameter of the pipeline changes or there is a curve, the first roller and the track wheel drive the first spring and the second spring to expand and contract according to the change in the inner diameter of the pipeline or the direction of the curve, so that the first roller and the track wheel remain in contact with the pipeline.

[0057] It can be seen from the above technical scheme that the present application provides a traction device and method suitable for the insertion of a folded liner pipe; wherein the device includes: a first drive component, a fixed ring, a second drive component and a traction rope; the first drive component includes: a first main body and multiple first power mechanisms; multiple first power mechanisms are distributed around the circumference of the first main body; the first power mechanism includes: a first spring, a first connecting rod, a first support rod, a first roller, a first slider and a first power driver; the second drive component includes: a second main body and multiple second power mechanisms; multiple second power mechanisms are distributed around the circumference of the second main body; the second power mechanism includes: a second spring, a second connecting rod, a second support rod, a track wheel and a second slider; the fixed ring is sleeved on the outer periphery of the liner pipe and is detachably connected to the liner pipe; the rear of the first main body is connected to the front of the fixed ring; the second main body is sleeved on the outer periphery of the liner pipe and connected to the rear of the fixed ring; the traction rope is connected to the front of the first main body.

[0058] When the pipeline situation is complicated, such as when the inner diameter of the pipeline changes or there is a bend, the first roller and the track wheel can drive the first spring and the second spring to expand and contract according to the change in the inner diameter of the pipeline or the direction of the bend, so that the first roller and the track wheel can maintain contact with the inner wall of the pipeline in the complex pipeline. At the same time, the track wheel can avoid friction between the liner pipe and the pipeline, thereby achieving smooth transportation of the liner pipe, which has high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0060] Figure 1 An overall side view of a traction device suitable for inserting a folded liner pipe provided in an embodiment of the present application;

[0061] Figure 2 A front view of the overall structure of a traction device suitable for inserting a folded liner pipe provided in an embodiment of the present application;

[0062] Figure 3 A schematic diagram of the structure of a first drive assembly of a traction device suitable for inserting a folded liner pipe provided in an embodiment of the present application;

[0063] Figure 4 A schematic diagram of the structure of a second drive assembly of a traction device suitable for inserting a folded liner pipe provided in an embodiment of the present application;

[0064] Figure 5A schematic diagram of a traction device suitable for inserting a folded liner pipe during a turning process provided in an embodiment of the present application;

[0065] Figure 6 A schematic diagram of the structure of a universal shaft of a traction device suitable for inserting a folded liner pipe provided in an embodiment of the present application;

[0066] Figure 7 A schematic diagram of a fixing ring structure of a traction device suitable for inserting a folded liner pipe provided in an embodiment of the present application;

[0067] In the figure:

[0068] 1. first driving assembly; 11. first main body; 111. hanging ring; 12. first power mechanism; 121. first spring; 122. first connecting rod; 123. first support rod; 124. first roller; 125. first slider; 126. first power driver; 127. distance sensor; 128. first battery; 13. processor;

[0069] 2. Fixed ring; 21. Adjustable screw; 22. Soft rope; 23. Second hanging ring;

[0070] 3. Second drive assembly; 31. Second main body; 32. Second power mechanism; 321. Second spring; 322. Second connecting rod; 323. Second support rod; 324. Track wheel; 325. Second slider; 326. Second power driver; 327. Second roller; 328. Track; 33. Second processor; 34. Fixed shaft; 35. Second battery;

[0071] 4. Lining pipe; 41. Binding rope;

[0072] 5. Traction rope;

[0073] 6. Pipeline;

[0074] 7. Cardan shaft; 71. Cardan shaft body; 72. Steering shaft;

[0075] 8. Composite rope;

[0076] 9. Electrical wires. DETAILED DESCRIPTION

[0077] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0078] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0079] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0080] See also Figures 1 to 4 In the first aspect of the embodiments of the present application, a traction device suitable for inserting a folded liner pipe is provided, hereinafter referred to as a traction device, which includes: a first drive component 1, a fixing ring 2, a second drive component 3 and a traction rope 5.

[0081] The traction rope 5, the first drive assembly 1, the fixing ring 2, and the second drive assembly 3 are connected in sequence and then inserted into the pipe 6. Specifically, for the convenience of description, in the embodiment provided in the present application, the traveling direction of the traction device is the front, that is, the traction rope 5 is connected to the front of the first drive assembly 1, the first drive assembly 1 is connected to the rear of the fixing ring 2, and the second drive assembly 3 is connected to the rear of the fixing ring 2.

[0082] During use, the second drive assembly 3 is first sleeved on the inner liner 4, specifically, the second body 31 in the second drive assembly 3 is sleeved on the folded inner liner 4, then the fixing ring 2 is sleeved on the outer periphery of the inner liner 4 and detachably connected to the inner liner 4, and then the first body 11 in the first drive assembly 1 is connected to the fixing ring 2 and the traction rope 5 is connected to the first body 11. After completion, the traction rope 5 moves along the pipeline 6, and the traction device can be pulled into the pipeline 6. In addition, when an unexpected situation occurs during the construction process or the device fails, the traction rope 5 can also pull the entire device out to avoid blocking the pipeline.

[0083] In this embodiment, the liner tube 4 is a flexible hose structure that can be bent and folded.

[0084] As an implementation, see Figures 1 to 3The first driving assembly 1 includes: a first main body 11 and a plurality of first power mechanisms 12. The first power mechanisms 12 are used to provide power for traveling along the pipeline 6 to reduce the traction force required by the traction rope 5. The plurality of first power mechanisms 12 are distributed around the circumference of the first main body 11, ensuring that the plurality of first power mechanisms 12 can abut against the inner wall of the pipeline 6 from multiple directions.

[0085] Specifically, the first power mechanism 12 includes: a first spring 121, a first connecting rod 122, a first support rod 123, a first roller 124, a first slider 125 and a first power driver 126; one end of the first connecting rod 122 is hinged to the first main body 11; the first roller 124 is arranged at the other end of the first connecting rod 122; the first slider 125 is arranged on the first main body 11, and the first slider 125 can slide along the axial direction of the first main body 11; one end of the first support rod 123 is hinged to the first connecting rod 122, and the other end of the first support rod 123 is hinged to the first slider 125; one end of the first spring 121 is connected to the first main body 11, and the other end of the first spring 121 is connected to the first slider 125; the output end of the first power driver 126 is connected to the first roller 124, which is used to drive the first roller 124 to rotate.

[0086] In this embodiment, the first body 11 can be a columnar body with a diameter smaller than that of the fixing ring 2, and the axial direction of the first body 11 is arranged in the same direction as the axial direction of the pipe 6. After entering the pipe 6, the first roller 124 abuts against the inner wall of the pipe 6, and when the traction device moves in the pipe 6, the first power driver 126 can drive the first roller 124 to rotate, so that the first power mechanism 12 can provide driving force for the movement of the traction device.

[0087] In this embodiment, the first support rod 123, the first connecting rod 122 and the first spring 121 form a triangular structure; specifically, one end of the first support rod 123 can be hinged to the middle part of the first connecting rod 122; when the first roller 124 is subjected to force and moves along the radial direction of the pipe 6, the first roller 124 can drive the first connecting rod 122 to rotate, thereby driving the first support rod 123 and the first slider 125 to move; the moving first slider 125 drives the first spring 121 to expand and contract, so that the first spring 121 can provide a buffering force for the first roller 124. Specifically, in the case that there are foreign objects, damages and other uneven inner walls of the pipe 6, the first roller 124 can be adjusted radially with the change of the inner wall of the pipe 6 through the buffering of the first spring 121, so that the first roller 124 can move more smoothly when the inner wall of the pipe 6 is uneven, thereby achieving the effect of improving applicability. When the pipe 6 is bent, affected by the traction force of the traction rope 5 in a straight line, the bending of the pipe 6 and other factors, the first roller 124 located on the inner side of the curve will tend to move toward the direction close to the axis of the pipe 6, and at the same time, the first roller 124 located on the outer side of the curve will tend to move away from the axis of the pipe 6; at this time, through the cooperation of the first connecting rod 122, the first support rod 123, the first slider 125 and the first spring 121, the first rollers 124 located on the inner and outer sides of the curve can be adjusted respectively, ensuring that the first roller 124 can fit the inner wall of the pipe 6 during the turning process, thereby further improving the applicability of the traction device.

[0088] As an implementation, see Figure 1 , Figure 2 and Figure 4 The second driving assembly 3 includes: a second main body 31 and a plurality of second power mechanisms 32. The second power mechanisms 32 can provide support for the outer periphery of the inner liner 4, that is, during the travel, the outer portion of the inner liner 4 abuts against the inner wall of the pipe 6 through the second power mechanisms 32 without direct contact with the pipe 6, thereby avoiding wear of the inner liner 4 and reducing travel resistance. The plurality of second power mechanisms 32 are distributed around the circumference of the second main body 31 to ensure that they can provide support for the inner liner 4 from multiple directions.

[0089] The second power mechanism 32 includes: a second spring 321, a second connecting rod 322, a second support rod 323, a track wheel 324 and a second slider 325; one end of the second connecting rod 322 is hinged to the second main body 31; the track wheel 324 is arranged at the other end of the second connecting rod 322; the second slider 325 is arranged on the second main body 31, and the second slider 325 can slide along the axial direction of the second main body 31; one end of the second support rod 323 is hinged to the second connecting rod 322, and the other end of the second support rod 323 is hinged to the second slider 325; one end of the second spring 321 is connected to the second main body 31, and the other end of the second spring 321 is connected to the second slider 325.

[0090] In this embodiment, the second body 31 is a ring body with a diameter larger than the folded inner liner pipe 4, so that it can be sleeved on the folded inner liner pipe 4. Similarly, the fixing ring 2 is a ring body with a diameter larger than the folded inner liner pipe 4. After entering the interior of the pipe 6, the track wheel 324 abuts against the inner wall of the pipe 6, and when the traction device moves in the pipe 6, the track wheel 324 can move along the inner wall of the pipe 6, reducing the traction force required by the traction rope 5 and reducing the driving force required by the first power driver 126, while also avoiding wear on the inner liner pipe 4.

[0091] Moreover, the second support rod 323, the second connecting rod 322 and the second spring 321 form a triangular structure; when the track wheel 324 is subjected to force and moves along the radial direction of the pipeline 6, the track wheel 324 can drive the second connecting rod 322 to rotate, thereby driving the second support rod 323 and the second slider 325 to move; the moving second slider 325 drives the second spring 321 to expand and contract. Thus, the second spring 321 can provide a buffer force for the track wheel 324. Therefore, in the same way, when there are foreign objects, damages and other uneven inner walls inside the pipeline 6, the track wheel 324 can be adjusted radially with the change of the inner wall of the pipeline 6 through the buffering of the second spring 321, so that the track wheel 324 can move more smoothly when the inner wall of the pipeline 6 is uneven, ensuring the smooth transportation of the inner liner 4 and avoiding wear. Correspondingly, when the pipeline 6 turns, the track wheel 324 can fit the inner wall of the pipeline 6.

[0092] In summary, the traction device provided in this embodiment can effectively avoid the friction between the liner tube 4 and the pipe 6 when the folded liner tube 4 is sent to the pipe 6 to be repaired, such as when the pipe is bent, the pipe is damaged, or there are foreign objects in the pipe. This can avoid the liner tube 4 from wrinkling, twisting, or being damaged or even unable to be transported due to friction, and reduce the risk of damage or breakage of the liner tube 4. Therefore, it can also ensure the laying effect of the liner tube 4 after it is unfolded, and improve the durability of the liner tube 4. Therefore, the traction device improved in this embodiment is universal for conventional pipes, complex pipes, and multi-bend pipes. At the same time, after completing the transportation of the folded liner tube 4, each component in the traction device can be removed from the liner tube 4 to complete the recovery of the traction device.

[0093] It should be noted that, in this embodiment, the first roller 124 is a wheel structure, and the track wheel 324 is a track structure. The wheel structure has a higher structural bearing capacity, and the track structure has a higher ability to act in complex situations. To this end, the first roller 124 located in front of the folded liner pipe 4 can play a structural support role for the first main body 11, ensuring that the first main body 11 can move smoothly under complex pipe conditions and play a pulling role for the rear liner pipe 4 and components; the track wheel 324 located on the outer periphery of the folded liner pipe 4 can ensure stable support for the liner pipe 4, and at the same time facilitate the traction of the first drive assembly 1, ensuring that the liner pipe 4 does not contact the pipeline 6 during the long-distance transportation of the liner pipe 4.

[0094] As an implementation, the first power driver 126 may be a rotary motor and may be disposed at the axis of the first roller 124 or on the first connecting rod 122 , so that the first power driver 126 can move following the movement of the first roller 124 .

[0095] As an implementation mode, the electrical components on the first driving assembly 1, such as the first power driver 126, can be conductively connected to an external power source via wires disposed on the traction rope 5.

[0096] As an embodiment, the first driving assembly 1 is provided with a first battery 128; the first battery 128 is electrically connected to the first power driver 126 and can supply power to it. At the same time, the first battery 128 can be electrically connected to the wires on the traction rope 5 to obtain power supply.

[0097] As an implementation manner, a hanging ring 111 may be provided at the front and rear of the first body 11 , and connected to the traction rope 5 and the fixing ring 2 via the hanging ring 111 .

[0098] As an embodiment, the outer periphery of the liner tube 4 can be bound by binding ropes 41 to form a folded liner tube 4 .

[0099] As an implementation manner, three first rollers 124 may be disposed on the periphery of each first body 11 , and adjacent first rollers 124 are spaced 120° apart.

[0100] In a more specific embodiment, the first drive component 1 includes: a processor 13; the first drive component 1, the fixing ring 2 and the second drive component 3 travel in the pipeline 6; the first power mechanism 12 includes: a distance sensor 127; the distance sensor 127 is arranged on the first roller 124, and is used to measure the distance from itself to obstacles in the direction of travel to obtain distance data; the first spring 121 is an electrically controlled telescopic spring; the processor 13 is arranged on the first body 11, and the processor 13 is electrically connected to the distance sensor 127, the first power driver 126 and the first spring 121; the processor 13 is used to calculate the shape of the pipeline in front of the first body 11 according to multiple distance data, and is used to control the length of each first spring 121 and the rotation speed of each first power driver 126 according to the pipeline shape, so that the first roller 124 fits the pipe wall of the pipeline 6 during the travel process.

[0101] In this embodiment, the distance measuring sensor 127 may be an infrared sensor or the like. Each first roller 124 is provided with a distance measuring sensor 127, so that the processor 13 can obtain a plurality of distance data in different directions, and then obtain the shape of the pipeline in front of the traveling direction by fitting the distance data. Among them, the calculation direction of the pipeline shape obtained by calculating the distance data is a prior art, so it will not be described in detail in this embodiment.

[0102] In this embodiment, the processor 13 is configured to calculate the bending direction of the pipeline ahead in the traveling direction through a plurality of distance data.

[0103] In practical applications, such as Figure 5 As shown, when the traction device passes through a curve, the travel distance of the first roller 124 located on the inner side of the curve is less than the travel distance of the first roller 124 located on the outer side of the curve, and due to the traction of the traction rope 5 and other reasons, the distance between the first roller 124 located on the inner side of the curve and the axis of the pipe 6 is less than the distance between the first roller 124 located on the outer side of the curve and the axis of the pipe 6. For this reason, after the processor 13 determines the turning direction of the pipe 6 in front, it can control the first spring 121 to be extended and retracted according to the position of the first roller 124, and control the speed of the first roller 124 according to the position of the first roller 124, so that the closer the first roller 124 is to the inner side of the curve, the smaller the distance from the axis and the lower the speed of the first roller 124 is to the inner side of the curve, thereby realizing that the first drive assembly 1 can pass through the curve smoothly as a whole, ensuring that the entire device can pass through the curve smoothly at a faster speed, lower difficulty and smaller pulling force.

[0104] As an implementation, the first spring 121 can be an electrically controlled telescopic spring in the prior art that can be directly controlled to extend and retract by electromagnetic force or other directions. In other implementations, the first spring 121 can also be a spring provided at both ends of the electrically controlled telescopic rod, specifically, the first spring 121 can have both an electrically controlled telescopic function and a buffering function.

[0105] In a further improved embodiment, the second drive component 3 includes: a second processor 33; the second power mechanism 32 includes: a second power driver 326; the output end of the second power driver 326 is connected to the track wheel 324, used to drive the track wheel 324 to move; the second spring 321 is an electrically controlled telescopic spring; the second processor 33 is arranged on the second main body 31, and the second processor 33 is electrically connected to the processor 13, the second power driver 326 and the first spring 121; the second processor 33 is used to control the length of each second spring 321 and control the rotation speed of each second power driver 326 according to the shape of the pipeline, so that the track wheel 324 abuts against the pipe wall of the pipeline 6 during the movement.

[0106] In this embodiment, the second power driver 326 can drive the track wheel 324 to move actively, improve the driving force for conveying the inner liner 4, reduce the risk of breaking the traction rope 5 and other connecting ropes, and reduce the risk of slipping of the inner liner 4 and the fixing ring or the second body 31. At the same time, the processor 13 can transmit the data of the pipe shape to the second processor 33, and since the distance between the second body 31 and the first body 11 in front is the preset data that can be obtained before traction, the second processor 33 can control the second spring 321 and the second power driver 326 according to the pipe shape, distance data and preset data, so that the track wheel 324 abuts against the inner wall of the pipe 6.

[0107] Correspondingly, the second spring 321 can be an electrically controlled telescopic spring in the prior art that can be directly controlled to extend and retract by electromagnetic force or other directions. In other embodiments, the second spring 321 can also be a spring provided at both ends of the electrically controlled telescopic rod, specifically, the second spring 321 can have both the electrically controlled telescopic function and the buffer function.

[0108] As an embodiment, the processor 13 can be connected to the second processor 33 via the wire 9; at the same time, the power supply of the processor 13, such as the first battery 128, can be connected, and the second power driver 326 and the second processor 33 can also be connected via the wire 9.

[0109] In one embodiment, the second driving assembly 3 further includes a second battery 35 ; the second battery 35 is electrically connected to the second power driver 326 and the second processor 33 .

[0110] As an implementation manner, the track wheel 324 includes: a track 328 and a plurality of second rollers 327 ; the plurality of second rollers 327 are arranged at intervals along the axial direction of the second body 31 and are sleeved in the track 328 .

[0111] In the same crawler wheel 324, multiple second rollers 327 can achieve synchronous movement through the crawler 328. The second power driver 326 can be connected to any second roller 327 in the crawler 328.

[0112] In one embodiment, the second power mechanism 32 includes: two second springs 321, two second connecting rods 322, two second struts 323 and two second sliders 325; the two second springs 321, two second connecting rods 322, two second struts 323 and two second sliders 325 are respectively arranged at the front end and the rear end of the track 328, which can play a buffering and supporting role for the track wheels 324 at the front and rear ends at the same time, thereby improving the stability of the travel process.

[0113] In one embodiment, see Figure 1 and Figure 6 The traction device also includes: a universal shaft 7; the rear of the first body 11 is connected to the front of the fixing ring 2 through the universal shaft 7.

[0114] The universal shaft 7 includes a universal shaft body 71 and a steering shaft 72; the universal shaft body 71 is connected to the hanging ring 111 at the rear end of the first body 11 through a composite rope 8; the steering shaft 72 is rotatably arranged on the universal shaft body 71 along a first plane. A soft rope 22 is connected to the front end of the fixing ring 2; the soft rope 22 is rotatably connected to the steering shaft 72 along a second plane; the first plane and the second plane are perpendicular, so that a universal rotation connection is achieved between the soft rope 22 and the universal shaft body 71, so as to prevent the inner liner tube 4 from rotating and being damaged during the traction process.

[0115] In one embodiment, the first drive assembly 1 includes at least two first drive assemblies 1 ; the at least two first drive assemblies 1 are connected front and back via a universal shaft 7 .

[0116] In this embodiment, the two first drive components 1 can be driven independently, thereby providing better traction capability, improving the stability of the device and adapting to complex pipe conditions, and avoiding the situation where a single first drive component 1 is difficult to pull in the face of large friction. It should be noted that the above-mentioned processor 13 and ranging sensor 127 can be only arranged on the first drive component 1 at the front.

[0117] In one embodiment, the second drive assembly 3 includes a plurality of second drive assemblies 3 , which are spaced apart along the axial direction of the inner liner pipe 4 , and two adjacent second drive assemblies 3 are connected front and back through a composite rope 8 .

[0118] Similarly, the plurality of second drive assemblies 3 can be supported along the axial direction of the inner liner pipe 4 to improve the transportation stability. As an embodiment, a fixed shaft 34 can be provided on the second body 31 ; the composite rope 8 is connected to the fixed shaft 34 .

[0119] In actual applications, the inventors found that for small-diameter pipes 6, specifically when the diameter of the second main body 31 is less than 800 mm, the spacing between adjacent second drive assemblies 3 is 3 to 4 meters; when the diameter of the second main body 31 is greater than 800 mm, the spacing between adjacent second drive assemblies 3 is 1 to 2 meters; this can ensure the support effect on the lining pipe 4.

[0120] In one embodiment, a plurality of adjustable screws 21 are provided along the circumferential direction on the fixing ring 2; the adjustable screws 21 pass through the fixing ring 2 and connect to the inner liner tube 4. For example, four adjustable screws 21 are provided on the fixing ring 2, and the interval between adjacent adjustable screws 21 is 90 degrees.

[0121] The fixing ring 2 and the inner liner 4 can be fixedly connected by the adjustable screw 21, and after the inner liner 4 is transported, it can be removed to separate the fixing ring 2 and the inner liner 4. In application, a gasket can be arranged between the adjustable screw 21 and the inner liner 4 to reduce the damage of the adjustable screw 21 to the inner liner 4.

[0122] In this embodiment, a plurality of second hanging rings 23 may be provided on the fixing ring 2 , and the composite rope 8 is connected through the second hanging rings 23 , thereby connecting the second body 31 through the composite rope 8 .

[0123] The second aspect of the present application provides a traction device method suitable for inserting a folded liner pipe, which is applied to any of the above-mentioned traction devices suitable for inserting a folded liner pipe, and includes:

[0124] S1, guiding the first drive assembly 1, the fixing ring 2, and the second drive assembly 3 into the pipeline 6 through the traction rope 5;

[0125] S2, while keeping the traction rope 5 traction, start the first power driver 126 to drive the first roller 124 to rotate;

[0126] S3. When the inner diameter of the pipe 6 changes or there is a curve, the first roller 124 and the track wheel 324 drive the first spring 121 and the second spring 321 to expand and contract according to the change in the inner diameter of the pipe 6 or the direction of the curve, so that the first roller 124 and the track wheel 324 remain in contact with the pipe 6.

[0127] After the inner liner 4 is transported, the part of the inner liner 4 connected to the fixing ring 2, that is, the part connected by the adjustable screw 21, can be cut off. Afterwards, the inner liner 4 can be restored to form a pipeline lining by heating, pressurizing, etc., and the pipeline 6 can be repaired.

[0128] Through the traction device and method suitable for the insertion of the folded liner pipe provided in this embodiment, the liner pipe 4 can be transported smoothly, safely and efficiently; and the traction device has the characteristics of integration, all equipment can be disassembled separately, which is convenient for transportation, and can be quickly assembled into a whole for use during construction; the device has strong adaptability and stability, can adapt to pipelines within a certain diameter range, can maintain the stability of the device and operate normally under complex pipe conditions, and at the same time the device itself has power, the whole device carries the folded liner pipe forward, can adapt to and pass through complex pipelines with many curved pipe sections at one time; at the same time, the device has good sealing performance and supports water-carrying operations; the device is recyclable, and after the repair project is completed, the whole device can be recycled and can be quickly put into use in other projects; when passing through a curved pipe section, the device can automatically adjust the size and speed to reduce the friction resistance of the folded liner pipe during the traction process of inserting into the original pipeline, while ensuring that the folded liner pipe is not damaged, the traction force when the folded liner pipe enters the original pipeline is reduced, and ultimately the construction efficiency of pipeline repair is improved.

[0129] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A traction device suitable for inserting a folded liner pipe, characterized in that: include: A first drive assembly (1), a fixing ring (2), a second drive assembly (3) and a traction rope (5); The first driving assembly (1) comprises: a first main body (11) and a plurality of first power mechanisms (12); A plurality of the first power mechanisms (12) are distributed around the circumference of the first body (11); The first power mechanism (12) comprises: a first spring (121), a first connecting rod (122), a first support rod (123), a first roller (124), a first slider (125) and a first power driver (126); One end of the first connecting rod (122) is hingedly connected to the first main body (11); The first roller (124) is arranged at the other end of the first connecting rod (122); The first sliding block (125) is arranged on the first main body (11), and the first sliding block (125) is capable of sliding along the axial direction of the first main body (11); One end of the first support rod (123) is hinged to the first connecting rod (122), and the other end of the first support rod (123) is hinged to the first sliding block (125); One end of the first spring (121) is connected to the first body (11), and the other end of the first spring (121) is connected to the first sliding block (125); The output end of the first power driver (126) is connected to the first roller (124) and is used to drive the first roller (124) to rotate; The second driving assembly (3) comprises: a second main body (31) and a plurality of second power mechanisms (32); A plurality of the second power mechanisms (32) are distributed around the circumference of the second body (31); The second power mechanism (32) comprises: a second spring (321), a second connecting rod (322), a second support rod (323), a track wheel (324) and a second sliding block (325); One end of the second connecting rod (322) is hingedly connected to the second body (31); The track wheel (324) is arranged at the other end of the second connecting rod (322); The second sliding block (325) is arranged on the second main body (31), and the second sliding block (325) is capable of sliding along the axial direction of the second main body (31); One end of the second support rod (323) is hinged to the second connecting rod (322), and the other end of the second support rod (323) is hinged to the second sliding block (325); One end of the second spring (321) is connected to the second body (31), and the other end of the second spring (321) is connected to the second sliding block (325); The fixing ring (2) is sleeved on the outer periphery of the inner liner tube (4) and is detachably connected to the inner liner tube (4); The rear of the first main body (11) is connected to the front of the fixing ring (2); The second body (31) is sleeved on the outer periphery of the inner liner tube (4) and connected to the rear of the fixing ring (2); The traction rope (5) is connected to the front of the first body (11).

2. The traction device suitable for inserting a folded liner pipe according to claim 1, characterized in that: The first driving component (1) comprises: a processor (13); The first drive assembly (1), the fixing ring (2) and the second drive assembly (3) travel in the pipeline (6); The first power mechanism (12) comprises: a distance measuring sensor (127); The distance measuring sensor (127) is arranged on the first roller (124) and is used to measure the distance from the first roller to an obstacle in the direction of travel to obtain distance data; The first spring (121) is an electrically controlled telescopic spring; The processor (13) is arranged on the first body (11), and the processor (13) is electrically connected to the distance measuring sensor (127), the first power driver (126), and the first spring (121); The processor (13) is used to calculate the shape of the pipe in front of the first body (11) based on the plurality of distance data, and to control the length of each of the first springs (121) and the rotation speed of each of the first power drivers (126) based on the pipe shape, so that the first roller (124) fits the pipe wall of the pipe (6) during the travel process.

3. The traction device suitable for inserting a folded liner pipe according to claim 2, characterized in that: The second driving component (3) comprises: a second processor (33); The second power mechanism (32) comprises: a second power driver (326); The output end of the second power driver (326) is connected to the track wheel (324) and is used to drive the track wheel (324) to move forward; The second spring (321) is an electrically controlled telescopic spring; The second processor (33) is arranged on the second body (31), and the second processor (33) is electrically connected to the processor (13), the second power driver (326), and the first spring (121); The second processor (33) is used to control the length of each second spring (321) and the rotation speed of each second power driver (326) according to the shape of the pipeline, so that the track wheel (324) abuts against the pipe wall of the pipeline (6) during travel.

4. The traction device suitable for inserting a folded liner pipe according to any one of claims 1 to 3, characterized in that: The track wheel (324) comprises: a track (328) and a plurality of second rollers (327); A plurality of the second rollers (327) are arranged at intervals along the axial direction of the second body (31) and are sleeved in the crawler track (328).

5. The traction device suitable for inserting a folded liner pipe according to claim 4, characterized in that: The second power mechanism (32) comprises: two second springs (321), two second connecting rods (322), two second support rods (323) and two second sliding blocks (325); Two second springs (321), two second connecting rods (322), two second support rods (323) and two second sliding blocks (325) are respectively arranged at the front end and the rear end of the crawler track (328).

6. The traction device suitable for inserting a folded liner pipe according to claim 1, characterized in that: Also includes: Cardan shaft (7); The rear of the first main body (11) is connected to the front of the fixing ring (2) via the universal shaft.

7. The traction device suitable for inserting a folded liner pipe according to claim 6, characterized in that: The first driving assembly (1) comprises at least two; At least two of the first drive assemblies (1) are connected front and back via the universal shaft (7).

8. The traction device suitable for inserting a folded liner pipe according to claim 1, 6 or 7, characterized in that: The second driving assembly (3) comprises a plurality of; A plurality of the second drive assemblies (3) are arranged at intervals along the axial direction of the inner liner pipe (4), and two adjacent second drive assemblies (3) are connected front to back via a composite rope (8).

9. The traction device suitable for inserting a folded liner pipe according to claim 1, characterized in that: A plurality of adjustable screws (21) are arranged on the fixing ring (2) along the circumference; The adjustable screw (21) passes through the fixing ring (2) and is connected to the liner tube (4).

10. A pulling device method suitable for inserting a folded liner pipe, characterized in that: A traction device for inserting a folded liner pipe as claimed in any one of claims 1 to 9, comprising: S1, guiding the first drive assembly (1), the fixing ring (2), and the second drive assembly (3) into the pipeline (6) through the traction rope (5); S2, while maintaining the traction of the traction rope (5), starting the first power driver (126) to drive the first roller (124) to rotate; S3. When the inner diameter of the pipeline (6) changes or there is a curve, the first roller (124) and the track wheel (324) drive the first spring (121) and the second spring (321) to expand and contract according to the change in the inner diameter of the pipeline (6) or the direction of the curve, so that the first roller (124) and the track wheel (324) remain in contact with the pipeline (6).

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