CN117212603B - Spiral winding repairing device for underground pipeline - Google Patents

Abstract

The present invention relates to the technical field of trenchless pipeline repair, and discloses an underground pipeline spiral winding repair device, comprising: a rotating frame and multiple rolling components, the rolling components comprising walking wheels and a pressing roller; a first guide block, a second guide block and a third guide block; the second guide block and the first guide block are arranged at intervals along the radial direction of the rotating frame, the second guide block is located outside the first guide block and the second guide block is located in front of the first guide block, the third guide block and the second guide block are arranged at intervals along the radial direction of the rotating frame, and there is a circumferential angle between the first guide block and the second guide block, and between the second guide block and the third guide block in the circumference of the rotating frame. The angle and position transformation of the stainless steel liner is performed twice, and the radial lifting distance and the guide angle change have a buffer distance in the circumference of the rotating frame, so that the stainless steel liner can be smoothly transitioned with a certain bend, ensuring that the stainless steel liner will not be damaged due to bending during the spiral winding process.

Description

A spiral winding repair device for underground pipelines

Technical Field

The invention relates to the technical field of trenchless pipeline repair, in particular to an underground pipeline spiral winding repair device.

Background Art

Long-term water supply pipelines are affected by many factors such as the underground environment, raw water quality and pipeline materials. In the water supply network system, a large number of water supply pipelines have exceeded their service life. Aging water supply pipes are affected by physical, chemical and microbial effects, resulting in large-scale corrosion and scaling of the inner wall, which seriously affects the water quality of the pipeline network and causes secondary pollution. In addition, early water supply pipelines had major defects in the design of structural pressure resistance and stability, resulting in frequent accidents such as pipe bursts and leakages in existing water supply pipelines, causing serious economic losses and more seriously affecting the health and safety of urban citizens. Therefore, there is an urgent need to maintain and repair aging water supply pipelines.

In recent years, the thin-walled stainless steel lining method has been widely used in the field of pipeline repair as a new type of trenchless repair technology, especially for water supply pipeline repair. The water supply pipeline is a pressure pipeline. While being subjected to the external pressure of the surrounding soil, it is also subjected to the local negative pressure caused by the frequent fluctuations of the internal medium and the alternating start-up and shutdown of the system. After the water supply pipeline is repaired using the thin-walled stainless steel lining method, the negative pressure may cause the stainless steel lining to buckle and collapse, causing the entire project to fail. Therefore, enhancing the stability of the stainless steel lining structure is crucial to improving the construction process of the thin-walled stainless steel lining method.

The spiral winding machine arranges the inner lining in a spiral winding manner inside the pipeline to realize automatic pipeline repair. For example, the patent with application publication number CN115139554A discloses a detachable spiral pipeline repair device, which is used to make the plastic strips continuously enter and interlock with each other, and push out axially to form a plastic winding pipeline, including a main board, a front board and a plurality of roller assemblies, and the plurality of roller assemblies are detachably installed between the main board and the front board; the plurality of roller assemblies are distributed at equal intervals along the circumference; the front board is used to limit and adjust the size of the pipe mouth of the formed plastic winding pipeline; a driving device is installed on the upper end of the main board, and the driving device is respectively connected to a plurality of roller assemblies, and drives the roller assemblies to rotate axially; a push ring is provided on the roller assembly, which is used to axially push the plastic strip to move; the push rings on each two roller assemblies are spirally arranged at equal intervals along the axial direction; the sum of the distances between the plurality of push rings is equal to the width of the plastic strip.

The above-mentioned spiral pipe repair device drives the roller assembly to move axially through the driving device. The roller assembly presses the plastic strip spirally onto the inner wall of the pipe while moving. The plastic strip is buckled to achieve pipe repair. However, the existing spiral pipe repair device is only applicable to linings made of plastic strips. When a strip-shaped stainless steel lining profile is used, the stainless steel material has high strength and rigidity, and its spiral bending is difficult and easily damaged when bent. The existing repair device for plastic plates is not applicable.

Summary of the invention

The purpose of the present invention is to provide an underground pipeline spiral winding repair device to solve the problem that the repair device in the prior art cannot be applied to stainless steel lined spiral pipelines.

In order to achieve the above object, the present invention provides an underground pipeline spiral winding repair device, comprising:

A rotating frame, the rotating frame having a front side for connecting with a driving device, a rear side for feeding the stainless steel lining, an inner side close to the rotation center line and an outer side away from the rotation center line, and a driving connecting shaft for connecting with the driving device is provided on the front side of the rotating frame;

A rolling assembly, wherein the rolling assembly has multiple groups, and the multiple groups of rolling assemblies are evenly distributed in annular intervals along the circumference of the rotating frame, and each of the rolling assemblies is fixedly assembled with the rotating frame, and the rolling assembly includes a running wheel and a pressing roller, and the running wheel and the pressing roller are arranged at intervals along the circumference of the rotating frame, the running wheel is used to radially support the inner wall of the underground pipeline to be repaired, and the pressing roller is used to radially press the stainless steel lining;

A first guide block, a second guide block and a third guide block, wherein the first guide block has a first guide groove adapted to the stainless steel liner, the second guide block has a second guide groove adapted to the stainless steel liner, and the third guide block has a third guide groove adapted to the stainless steel liner, the first guide groove, the second guide groove and the third guide groove are sequentially passed through by the stainless steel liner to form a feed channel, and an angle is formed between the guiding directions of the first guide groove, the second guide groove and the third guide groove;

The first guide block is arranged at the rear side of the rotating frame, the second guide block and the first guide block are arranged at intervals along the radial direction of the rotating frame, the second guide block is located on the outside of the first guide block and the second guide block is located on the front side of the first guide block, the third guide block is arranged between the walking wheel and the pressing roller of the same rolling assembly, the third guide block and the second guide block are arranged at intervals along the radial direction of the rotating frame, and the first guide block and the second guide block, as well as the second guide block and the third guide block, have a circumferential angle with respect to the circumference of the rotating frame.

Preferably, the second guide block is swingably assembled with the rotating frame, and a swing centerline of the second guide block is perpendicular to a rotation centerline of the rotating frame.

Preferably, the swing angle range of the second guide block is 0-30°.

Preferably, a circumferential angle between the first guide block and the second guide block in the circumferential direction of the rotating frame is defined as a first angle, and a circumferential angle between the second guide block and the third guide block in the circumferential direction of the rotating frame is defined as a second angle, and the first angle is equal to the second angle.

Preferably, the first angle and the second angle are in the range of 20-40°.

Preferably, the first guide groove is arranged along the front-rear direction, the second guide groove is arranged perpendicular to the radial extension of the rotating frame, and the third guide groove extends along the radial direction of the rotating frame.

Preferably, the rotation center line of the pressing roller is parallel to the rotation center line of the rotating frame, and an angle is formed between the rotation center line of the walking wheel and the rotation center line of the rotating frame.

Preferably, each group of the rolling assemblies comprises two groups of the pressing rollers, the two groups of the pressing rollers are parallel to each other and arranged at intervals along the circumference of the rotating frame, and the walking wheels are located between the two groups of the pressing rollers.

Preferably, the rotating frame comprises a main body seat, an assembly seat, a front plate and a rear plate, the front plate is fixedly assembled on the front side of the main body seat, the driving connecting shaft is fixedly connected to the front plate, the rear plate is fixedly assembled on the rear side of the main body seat, the first guide block is fixedly assembled on the rear side of the rear plate, the assembly seats are provided in multiple groups, the multiple groups of the assembly seats are evenly spaced along the circumference of the main body seat, and each of the assembly seats is equipped with a group of the rolling components;

The assembly seat includes a fixed plate, a support arm and an assembly plate, the fixed plate is fixedly connected to the main seat, one end of the support arm is assembled and connected to the fixed plate, and the other end is assembled and connected to the assembly plate, the support arms have two groups and are arranged at intervals along the front-to-back direction, the assembly plate is an arc structure extending along the circumference of the rotating frame, the rolling assembly is assembled between the two groups of the assembly plates, the second guide block is assembled on the side of the fixed plate close to the assembly plate, and the third guide block is assembled between the two groups of the assembly plates.

Preferably, the main seat includes several groups of structural plates arranged at intervals along the front-to-back direction, the structural plates include a rotating disk and a support plate, the rotating disk is fixedly assembled with the driving connecting shaft, and the support plates are arranged in multiple groups at intervals along the circumference of the rotating disk, the support plates correspond to the assembly seat one by one, and the support plates of each group of the structural plates are fixedly assembled with the fixed plate. The rotating disk is also provided with several groups of flow holes for water flow to pass through, which are arranged at intervals along the circumference, and the flow holes penetrate the rotating disk along the front-to-back direction.

Compared with the prior art, the spiral winding repair device for underground pipelines in the embodiment of the present invention has the following beneficial effects: a first guide block, a second guide block and a third guide block are arranged on the rotating frame, and the first guide groove, the second guide groove and the third guide groove are sequentially used for the stainless steel liner to pass through to form a feeding channel, so that the stainless steel liner enters through the rear side of the rotating frame, and is led out from the rotating outer peripheral surface of the rotating frame after directional rotation and position lifting. Under the top pressure of the pressing roller, the stainless steel liner is spirally wound and buckled to form a complete pipeline to repair the damaged pipeline; the first guide block is arranged on the rear side of the rotating frame, and the stainless steel liner first enters the first guide groove from the rear side, and then enters the second guide block located on the rotating frame The first guide block is arranged at intervals along the radial direction of the rotating frame, and the guiding directions of the first guide groove, the second guide groove and the third guide groove have an angle, so the angle and position transformation of the stainless steel liner is performed twice. In addition, since there is a circumferential angle between the second guide block and the first guide block, and between the third guide block and the second guide block, the radial lifting distance and the guide angle change have a buffer distance in the circumferential direction of the rotating frame, so that the stainless steel liner can smoothly transition with a certain bend, thereby ensuring that the stainless steel liner will not be damaged due to bending during the spiral winding process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an underground pipeline spiral winding repair device according to the present invention;

FIG2 is a rear view of the underground pipeline spiral winding repair device of FIG1;

FIG3 is a side view of the underground pipeline spiral winding repair device of FIG1 ;

FIG4 is a schematic structural diagram of a driving connecting shaft of the underground pipeline spiral winding repair device of FIG1 ;

FIG5 is a schematic structural diagram of a main body seat of a rotating frame of the underground pipeline spiral winding repair device of FIG1 ;

6 is a schematic structural diagram of an assembly seat of a rotating frame of the underground pipeline spiral winding repair device of FIG. 1 ;

FIG7 is a schematic structural diagram of a first guide block of the underground pipeline spiral winding repair device of FIG1 ;

FIG8 is a schematic diagram of the structure of an underground pipeline after being repaired by the underground pipeline spiral winding repair device of the present invention.

In the figure, 1, rotating frame, 11, main seat, 111, structural plate, 1111, rotating disk, 1112, supporting plate, 1113, circulation hole, 12, assembly seat, 121, fixing plate, 122, supporting arm, 123, assembly plate, 13, front plate, 14, rear plate, 2, driving connecting shaft, 21, ring sleeve, 22, connecting plate, 23, transmission line, 3, rolling assembly, 31, walking wheel, 32, pressing roller, 4, first guide block, 41, first guide groove, 5, second guide block, 51, second guide groove, 6, third guide block, 61, third guide groove, 7, lighting device, 8, stainless steel lining, 81, male lock buckle, 82, female lock buckle, 9, underground pipeline.

DETAILED DESCRIPTION

The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

A preferred embodiment of the underground pipeline spiral winding repair device of the present invention is shown in Figures 1 to 7, and is used to repair the underground pipeline 9 using a stainless steel liner 8, as shown in Figure 8, wherein the stainless steel liner 8 is a strip profile structure. The stainless steel liner 8 can be prefabricated and processed in a factory, and has a male lock buckle 81 and a female lock buckle 82 on its outer side. The male lock buckle 81 is a mushroom structure, and the female lock buckle 82 is a serrated structure. The stainless steel liner 8 is processed into an I-shape, and after spiral winding, the male lock buckle 81 and the female lock buckle 82 are interlocked to form the entire lined pipeline. The specific structure of the stainless steel liner 8 is prior art and will not be described in detail here.

The underground pipeline spiral winding repair device includes a rotating frame 1, a driving connection shaft 2, a rolling assembly 3, a first guide block 4, a second guide block 5 and a third guide block 6. The rotating frame 1 is the main structure of the underground pipeline spiral winding repair device. The driving connection shaft 2 is fixedly connected to the rotating frame 1. The driving connection shaft 2 is used to drive the driving device of the external device and the rotating frame 1 to drive the rotating frame 1 to rotate in the underground pipeline 9 to be repaired, and drive the rolling assembly 3, the first guide block 4, the second guide block 5 and the third guide block 6 to complete the spiral winding of the stainless steel liner 8.

The rotating frame 1 is a circular structure as a whole, and the rotation centerline of the rotating frame 1 is the centerline of the underground pipeline 9 to be repaired. The rotating frame 1 has a front side connected to the driving device, a rear side for feeding the stainless steel liner 8, an inner side close to the rotation centerline, and an outer side away from the rotation centerline, that is, the stainless steel liner 8 is fed from the rear side of the rotating frame 1, and the driving device is connected to the driving connecting shaft 2 at the front side to drive the rotating frame 1 to rotate. When the rotating frame 1 is working, the circumferential direction of the rotating frame 1 is the outer circle direction of its rotating circular surface, and the radial direction is the diameter direction of the rotating circular surface.

The driving connecting shaft 2 can be connected to an external power transmission line 23, and driven to rotate by the external power transmission line 23. The driving connecting shaft 2 penetrates the rotating frame 1 in the front-to-back direction, and a ring sleeve 21 is sleeved on the outer side of the driving connecting shaft 2. Two circular connecting plates 22 are arranged axially at intervals on the ring sleeve 21. The two connecting plates 22 are fixedly connected to the front and rear sides of the rotating frame 1, so that the driving connecting shaft 2 drives the rotating frame 1 to rotate.

The front side of the rotating frame 1 is also provided with a plurality of lighting devices 7, which are fixed at the frontmost of the driving connecting shaft 2, and the plurality of lighting devices 7 are distributed at intervals along the circumference of the driving connecting shaft 2. During the pipeline repair operation, the lighting device 7 can detect the environment of the dark pipeline, which is convenient for technicians to operate the machine. According to different pipeline environments, the lighting device 7 can select low beam or high beam, avoiding the uncertainties brought by the dark pipeline operation environment. The specific structure of the lighting device 7 is prior art and will not be described in detail here.

The rolling assembly 3, multiple groups of rolling assemblies 3 are evenly distributed in an annular manner along the circumference of the rotating frame 1, and each group of rolling assemblies 3 is fixedly assembled with the rotating frame 1. When the rotating frame 1 rotates, the rolling assembly 3 can be driven to rotate synchronously to adjust the rotating frame 1 to move in the front-back direction while rotating, and press the stainless steel liner 8 while moving, so that the stainless steel liner 8 is spirally wound in the underground pipe 9. In this embodiment, there are six groups of rolling assemblies 3, and the six groups of rolling assemblies 3 are distributed in an annular manner. In other embodiments, according to the diameter size of the underground pipe 9, the rolling assemblies 3 can be designed to be five groups, seven groups, eight groups, or other numbers.

The rolling assembly 3 includes a running wheel 31 and a pressing roller 32, which are arranged at intervals along the circumference of the rotating frame 1. The running wheel 31 is used to radially support the inner wall of the underground pipeline 9 to be repaired, and the pressing roller 32 is used to radially press the stainless steel lining 8. The materials of the running wheel 31 and the pressing roller 32 are pure plastic without solid modification. The wear of the pure plastic and the stainless steel surface is relatively small, so that the stainless steel strip profile can be smoothly spirally wound around the circumference of the device. In this embodiment, the materials of the running wheel and the pressing roller 32 are both polyethylene.

When the rotating frame 1 rotates to lay the stainless steel lining 8, the running wheel 31 rotates passively under the friction force with the underground pipeline 9, and the pressing roller 32 rotates passively under the friction force with the stainless steel lining 8. The stainless steel lining 8 is wound around the pressing roller 32 of each group of rolling components 3 for one circle. During the spiral advancement of the rotating frame 1, the pressing roller 32 travels between the stainless steel liners 8 and presses over the laid stainless steel liners 8, so that the male lock buckle 81 and the female lock buckle 82 are stably connected. The running wheel 31 travels between the underground pipelines 9, which plays a role in reducing resistance and limiting the advancing direction.

The first guide block 4 has a first guide groove 41 adapted to the stainless steel lining 8, the second guide block 5 has a second guide groove 51 adapted to the stainless steel lining 8, and the third guide block 6 has a third guide groove 61 adapted to the stainless steel lining 8. The cross-sectional shapes of the first guide groove 41, the second guide groove 51 and the third guide groove 61 are the same as the cross-sectional shape of the stainless steel lining 8, so that the stainless steel lining 8 can pass through the first guide groove 41, the second guide groove 51 and the third guide groove 61 in sequence. In actual engineering, different shapes of notches can be set according to the shapes of the stainless steel lining 8.

The first guide groove 41, the second guide groove 51 and the third guide groove 61 are sequentially passed through by the stainless steel liner 8 to form a feeding channel, and there is an angle between the guiding directions of the first guide groove 41, the second guide groove 51 and the third guide groove 61. The stainless steel liner 8 enters the underground pipeline spiral winding repair device from the rear side of the rotating frame 1 through the first guide groove 41. At this time, the stainless steel liner 8 extends in the front-to-back direction, that is, extends along the length direction of the underground pipeline 9; then the stainless steel liner 8 enters the second guide groove 51, and the direction of the stainless steel liner 8 changes for the first time; the stainless steel liner 8 enters the third guide groove 61 again, and its direction changes for the second time, thereby changing the stainless steel liner 8 from the front-to-back direction to extending through the rotating outer peripheral surface of the rotating frame 1, and the male lock buckle 81 and the female lock buckle 82 are locked with each other under the extrusion of the pressing roller 32.

The first guide block 4, the second guide block 5 and the third guide block 6 are all fixedly connected to the rotating frame 1 by bolts. The first guide block 4 is arranged at the rear side of the rotating frame 1, so that the stainless steel liner 8 enters the first guide groove 41 from the rear side of the rotating frame 1. The second guide block 5 and the first guide block 4 are arranged at intervals along the radial direction of the rotating frame 1. The second guide block 5 is located outside the first guide block 4 and the second guide block 5 is located in front of the first guide block 4, so that the distance between the second guide block 5 and the rotation center line of the rotating frame 1 is greater than the distance between the first guide block 4 and the rotation center line of the rotating frame 1, and the distance between the second guide block 5 and the first guide block 4 in the front-to-back direction makes the second guide groove 51 located outside and in front of the first guide groove 41. When the stainless steel liner 8 enters the second guide groove 51 from the first guide groove 41 and bends, the stainless steel liner 8 moves forward and outward at the same time, and guides the stainless steel liner 8 to the outer peripheral surface of the rotating frame 1. At the same time, the distance between the second guide block 5 and the first guide block 4 in the front-to-back direction and the inside-outside direction makes the bending of the stainless steel liner 8 transition smoothly.

The third guide block 6 is arranged between the running wheel 31 and the pressing roller 32 of the same rolling assembly 3. The third guide block 6 and the second guide block 5 are arranged at intervals along the radial direction of the rotating frame 1, and the third guide block 6 is located outside the second guide block 5. When the stainless steel liner 8 enters the third guide groove 61 from the second guide groove 51 and bends, the stainless steel liner 8 moves outward at the same time and is led out through the rotating outer peripheral surface of the rotating frame 1. The pressing roller 32 can squeeze the stainless steel liner 8 to spirally wrap when rolling.

There is a circumferential angle between the first guide block 4 and the second guide block 5, and between the second guide block 5 and the third guide block 6 in the circumferential direction of the rotating frame 1, that is, the first guide block 4, the second guide block 5 and the third guide block 6 are arranged circumferentially at intervals on the rotating plane of the rotating frame 1. The stainless steel liner 8 is bent when passing through the first guide groove 41, the second guide groove 51 and the third guide groove 61 in sequence. The stainless steel liner 8 enters the rotating frame 1 from the rear side and extends through the rotating outer peripheral surface of the rotating frame 1. Since there is a circumferential angle between the first guide block 4, the second guide block 5 and the third guide block 6, the stainless steel liner 8 has a synchronous position change in the circumferential direction of the rotating frame 1. The radial position and guide angle change of the stainless steel liner 8 have a buffer distance in the circumferential direction of the rotating frame 1, so that the stainless steel liner 8 can pass smoothly and be fixed on the three guide grooves with a certain degree of bending without destroying its profile structure.

The stainless steel lining of the strip profile is arranged by spiral winding process, which improves the problem of structural instability caused by negative pressure when repairing water supply pipes with thin-walled stainless steel. After the repair, the structural connection of the lining pipe is stable, the pressure resistance level is improved, especially the negative pressure resistance level has been significantly improved, and the structural stability has been greatly enhanced. After the repair, the lining pipe fits more closely with the original pipe, eliminating the step of expanding the lining pipe to fit the original pipe wall. The stainless steel lining spiral winding device can be operated with water, is easy to disassemble and assemble, and is convenient for transportation. It can adapt to the repair of pipes of different diameters and has strong adaptability.

When the underground pipeline spiral winding repair device is repairing an underground pipeline 9, the stainless steel lining 8 first enters the first guide groove 41 from the rear side, then enters the second guide groove 51 of the second guide block 5 on the rotating frame 1, and finally enters the third guide groove 61 of the third guide block 6 on the rolling assembly 3. The angle and position changes of the stainless steel lining 8 are performed twice. The radial lifting distance and guide angle change of the stainless steel lining 8 have a buffer distance in the circumferential direction of the rotating frame 1, so that the stainless steel lining 8 can smoothly transition with a certain bend, ensuring that the stainless steel lining 8 will not be damaged due to bending during the spiral winding process.

Preferably, the second guide block 5 is swingably assembled with the rotating frame 1 , and the swing center line of the second guide block 5 is perpendicular to the rotation center line of the rotating frame 1 .

The second guide block 5 can swing on the rotating frame 1 in a direction perpendicular to the rotation center line of the rotating frame 1. The second guide block 5 can change the direction of the second guide groove 51 when swinging, thereby changing the angle between the second guide groove 51 and the first guide groove 41, and between the second guide groove 51 and the third guide groove 61, so as to better form a guiding match with the first guide groove 41 and the third guide groove 61, and compensate for the position and angle changes of the stainless steel liner 8 when the stainless steel liner 8 is subjected to pulling force and swinging force, so as to ensure that the stainless steel liner 8 will not be damaged due to bending during the spiral winding process.

Preferably, the swing angle range of the second guide block 5 is 0-30°.

The second guide block 5 swings within an angle range of 0-30°. When the swing range is too large, the stainless steel liner 8 will be pulled, causing the stainless steel liner 8 to be damaged by a large bending angle. At the same time, a large swing angle will also occupy the space of the rotating frame 1 in the front and rear directions, increase the size of the rotating frame 1, and be inconvenient to use.

Preferably, the circumferential angle between the first guide block 4 and the second guide block 5 in the circumferential direction of the rotating frame 1 is defined as a first angle, and the circumferential angle between the second guide block 5 and the third guide block 6 in the circumferential direction of the rotating frame 1 is defined as a second angle, and the first angle is equal to the second angle.

When entering the second guide groove 51 through the first guide groove 41, and entering the third guide groove 61 from the second guide groove 51, the bending angle of the stainless steel liner 8 is close, and the first angle between the first guide block 4 and the second guide block 5 is equal to the second angle between the second guide block 5 and the third guide block 6, so that the bending of the stainless steel liner 8 is close and the transition is smoother. In this embodiment, the third guide block 6 is arranged in the rolling assembly 3 adjacent to the second guide block 5 to control the circumferential angle between the third guide block 6 and the second guide block 5. In other embodiments, according to the change of the relative position between the third guide block 6, the second guide block 5 and the first guide block 4, the angles of the first angle and the second angle may also be different.

Preferably, the first angle and the second angle are in the range of 20-40°.

The smaller the first angle and the second angle, the larger the bending angle of the stainless steel liner 8 is, and the more susceptible to damage. At the same time, the larger the first angle and the second angle are, the greater the size requirement for the rotating frame 1 is, which is not conducive to assembly. The range of the first angle and the second angle is selected to be 20-40°, which can simultaneously meet the bending angle requirements for the stainless steel liner 8 and the size requirements for the rotating frame 1. In this embodiment, the first angle and the second angle are both 30°.

Preferably, the first guide groove 41 is arranged along the front-rear direction, the second guide groove 51 is arranged perpendicular to the radial extension of the rotating frame 1 , and the third guide groove 61 extends along the radial direction of the rotating frame 1 .

The extension directions of the first guide groove 41, the second guide groove 51 and the third guide groove 61 are all straight lines, so that the stainless steel liner 8 can smoothly pass through the first guide block 4, the second guide block 5 and the third guide block 6, and avoid the stainless steel liner 8 from bending inside the first guide block 4, the second guide block 5 and the third guide block 6. The first guide groove 41 is along the front-to-back direction, which is consistent with the arrangement direction of the stainless steel liner 8 in the underground pipeline 9. The stainless steel liner 8 can smoothly enter the first guide groove 41, and avoid the stainless steel liner 8 from bending and swinging in the underground pipeline 9. The second guide groove 51 is arranged perpendicular to the radial extension of the rotating frame 1, so that the angle between the second guide groove 51 and the third guide groove 61, and the angle between the second guide grooves 51 are nearly equal, so that the angles of the two direction changes of the stainless steel liner 8 are nearly the same, and the bending transition is smoother, avoiding damage to the stainless steel liner 8.

Preferably, the rotation center line of the pressing roller 32 is parallel to the rotation center line of the rotating frame 1 , and there is an angle between the rotation center line of the running wheel 31 and the rotation center line of the rotating frame 1 .

The pressing roller 32 moves synchronously with the rotating frame 1 to extrude the stainless steel lining 8. There is an angle between the rotation centerline of the running wheel 31 and the rotation centerline of the rotating frame 1. When the running wheel 31 moves between the inner walls of the underground pipe 9, it can drive the rotating frame 1 to spiral forward. For each rotation of the rotating frame 1, the distance traveled by the running wheel 31 in the extension direction of the underground pipe 9 is the width of the stainless steel lining 8. This function can be achieved by setting the angle between the rotation centerline of the running wheel 31 and the rotation centerline of the rotating frame 1.

When the specifications of the stainless steel liner 8 are different, the angle between the rotation centerline of the running wheel 31 and the rotation centerline of the rotating frame 1 is different. The specific calculation method is to set the angle between the rotation centerline of the running wheel 31 and the rotation centerline of the rotating frame 1 to θ, the width of a stainless steel liner 8 to d, and the diameter of the underground pipeline 9 to D, then

Preferably, each group of rolling assemblies 3 includes two groups of pressing rollers 32 , the two groups of pressing rollers 32 are parallel to each other and arranged at intervals along the circumference of the rotating frame 1 , and the running wheel 31 is located between the two groups of pressing rollers 32 .

Each group of rolling assemblies 3 has two groups of pressing rollers 32, and the two groups of pressing rollers 32 can extrude the stainless steel lining 8 at the same time. After the stainless steel lining 8 extends out from the third guide groove 61 of the third guide block 6, the pressing rollers 32 on the inner side of the stainless steel on both sides of the rotation direction of the rotating frame 1 can extrude two adjacent spirally wound circles of the stainless steel lining 8, so that the stainless steel linings 8 are locked with each other.

Preferably, the rotating frame 1 includes a main body seat 11, an assembly seat 12, a front plate 13 and a rear plate 14, the front plate 13 is fixedly assembled on the front side of the main body seat 11, the driving connecting shaft 2 is fixedly connected to the front plate 13, the rear plate 14 is fixedly assembled on the rear side of the main body seat 11, the first guide block 4 is fixedly assembled on the rear side of the rear plate 14, there are multiple groups of assembly seats 12, the multiple groups of assembly seats 12 are evenly spaced along the circumference of the main body seat 11, and each assembly seat 12 is equipped with a group of rolling components 3;

The assembly seat 12 includes a fixed plate 121, a support arm 122 and an assembly plate 123. The fixed plate 121 is fixedly connected to the main seat 11. One end of the support arm 122 is assembled and connected to the fixed plate 121, and the other end is assembled and connected to the assembly plate 123. There are two groups of support arms 122 and they are arranged at intervals in the front-to-back direction. The assembly plate 123 is an arc structure extending along the circumference of the rotating frame 1. The rolling assembly 3 is assembled between the two groups of assembly plates 123. The second guide block 5 is assembled on one side of the fixed plate 121 close to the assembly plate 123. The third guide block 6 is assembled between the two groups of assembly plates 123.

The rotating frame 1 is formed by assembling a main body seat 11, an assembly seat 12, a front plate 13 and a rear plate 14. The centers of the main body seat 11, the assembly seat 12, the front plate 13 and the rear plate 14 have through holes that penetrate each other and are coaxially arranged. The driving connecting shaft 2 passes through each through hole and is assembled with the main body seat 11, the assembly seat 12, the front plate 13 and the rear plate 14 respectively, so that the rotating frame 1 is assembled on the driving connecting shaft 2, so that the driving connecting shaft 2 drives the rotating frame 1 to rotate synchronously.

The front plate 13 and the main base 11 are detachably connected by bolts, the rear plate 14 and the main base 11 are detachably connected by bolts, and the fixing plate 121 of the assembly base 12 and the main base 11 are detachably connected by bolts, so that the various structures of the rotating frame 1 are easy to disassemble. By using front plates 13, rear plates 14, and main bases 11 of different sizes, a rotating frame 1 that can adapt to the repair of underground pipes 9 of different diameters is formed.

The assembly seat 12 is formed by a fixing plate 121, a support arm 122 and an assembly plate 123, wherein the fixing plate 121 forms a structural member for assembly connection between the assembly seat 12 and the main body seat 11. Two groups of support arms 122 are arranged at intervals along the front-to-back direction, and the space between the two groups of support arms 122 can be assembled with the second guide block 5. The second guide block 5 is assembled on the fixing plate 121, and the third guide block 6 is fixed between the two groups of assembly plates 123, so that an interval is formed between the third guide block 6 and the second guide block 5 along the radial direction of the rotating frame 1.

The assembly plate 123 is an arc-shaped structure, and the curvature of the assembly plate 123 is the same as the curvature of the underground pipeline 9, so that the running wheels 31 and the pressing roller 32 are naturally arranged at intervals along the circumference of the rotating frame 1 after being transferred to the assembly plate 123, and can also ensure that the running wheels 31 and the underground pipeline 9, and the pressing roller 32 and the stainless steel lining 8 fit together.

Preferably, the main seat 11 includes several groups of structural plates 111 arranged at intervals along the front-to-back direction, the structural plates 111 include a rotating disk 1111 and a support plate 1112, the rotating disk 1111 is fixedly assembled with the driving connecting shaft 2, and multiple groups of support plates 1112 are arranged at intervals along the circumference of the rotating disk 1111, and the support plates 1112 correspond one-to-one to the assembly seat 12. The support plates 1112 of each group of structural plates 111 are fixedly assembled with the fixed plate 121. The rotating disk 1111 is also provided with several groups of flow holes 1113 for water flow to pass through, which are arranged at intervals circumferentially, and the flow holes 1113 penetrate the rotating disk 1111 along the front-to-back direction.

The main seat 11 is formed by a plurality of groups of structural plates 111, which can ensure the stability of the main seat 11 and increase the structural strength of the main seat 11; in addition, the interval between two adjacent groups of structural plates 111 in the front-to-back direction forms a hollow structural system, which can reduce the resistance of the underground pipeline spiral winding repair device to the water flow when operating with water. The flow hole 1113 on the rotating disk 1111 runs through the rotating disk 1111, and the rotating disk 1111 can be connected from front to back, so that the water flow directly enters between the two groups of structural plates 111, further reducing the resistance of the water flow. In this embodiment, there are four groups of structural plates 111, and the spacing between the four groups of structural plates 111 in the front-to-back direction is the same.

The structural plate 111 is formed by a rotating disk 1111 and a support plate 1112. The support plates 1112 between multiple groups of structural plates 111 are connected to the fixed plate 121 of the assembly seat 12 to ensure the structural strength when the assembly seat 12 is connected to the main body seat 11. In this embodiment, six groups of support plates 1112 are arranged at intervals along the circumference of the rotating disk 1111, corresponding to the number of assembly seats 12. Multiple groups of support plates 1112 are arranged at intervals along the circumference of the rotating disk 1111, and there is a gap between two circumferentially adjacent groups of support plates 1112, which increases the space between the support plates 1112 while ensuring the strength of the structural plates 111, increases the hollow area, and further reduces the resistance of the water flow.

The working process of the present invention is:

The underground pipeline spiral winding repair device is assembled at the construction site, and is lowered into the inspection well of the pipeline to be repaired by a lifting machine, and the stainless steel liner 8 is sequentially passed through the first guide groove 41 of the first guide block 4, the second guide groove 51 of the second guide block 5, and the third guide groove 61 of the third guide block 6, and the stainless steel liner 8 is fixed between the first guide groove 41, the second guide groove 51, and the third guide groove 61;

Start the motor connected to the driving connecting shaft 2, the rotating frame 1 actively rotates and drives the walking wheel 31 and the pressing roller 32 to passively rotate. Under the limiting action of the walking wheel 31, the rotating frame 1 spirally advances, and at the same time, the pressing roller 32 squeezes the stainless steel lining 8 to spirally wind and lay the stainless steel lining 8. During the winding process, the male locking buckle 81 and the female locking buckle 82 on the edge of the stainless steel lining 8 are interlocked. After the spiral pipe formed by the laid stainless steel lining 8 reaches the next inspection well, grouting is injected into the annular gap formed by the spiral pipe and the original underground pipe 9 to complete the repair of the underground pipe 9.

In summary, an embodiment of the present invention provides an underground pipeline spiral winding repair device, which arranges a first guide block, a second guide block and a third guide block on a rotating frame, and the first guide groove, the second guide groove and the third guide groove are sequentially used for the stainless steel liner to pass through to form a feeding channel, so that the stainless steel liner enters through the rear side of the rotating frame, and is led out from the rotating outer peripheral surface of the rotating frame after directional rotation and position lifting. Under the top pressure of a pressing roller, the stainless steel liner is spirally wound and buckled to form a complete pipeline to repair the damaged pipeline; the first guide block is arranged on the rear side of the rotating frame, and the stainless steel liner first enters the first guide groove from the rear side, and then enters the second guide groove of the second guide block located on the rotating frame. The third guide block is located on the rolling assembly and the first guide block is located on the rolling assembly. The third guide block is located on the rolling assembly and the first guide block is located on the rolling assembly. The third guide block is located on the rolling assembly and the first guide block is located on the rolling assembly. The third guide block is located on the rolling assembly and the first guide block is located on the rolling assembly. The third guide block is located on the rolling assembly and the first guide block is located on the rolling assembly. The third guide block is located on the rolling assembly and the second ...

The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims (10)

1. An underground pipeline spiral winding repair device, characterized by comprising: A rotating frame, the rotating frame having a front side for connecting with a driving device, a rear side for feeding the stainless steel lining, an inner side close to the rotation center line and an outer side away from the rotation center line, and a driving connecting shaft for connecting with the driving device is provided on the front side of the rotating frame; A rolling assembly, wherein the rolling assembly has multiple groups, and the multiple groups of rolling assemblies are evenly distributed in annular intervals along the circumference of the rotating frame, and each of the rolling assemblies is fixedly assembled with the rotating frame, and the rolling assembly includes a running wheel and a pressing roller, and the running wheel and the pressing roller are arranged at intervals along the circumference of the rotating frame, the running wheel is used to radially support the inner wall of the underground pipeline to be repaired, and the pressing roller is used to radially press the stainless steel lining; A first guide block, a second guide block and a third guide block, wherein the first guide block has a first guide groove adapted to the stainless steel liner, the second guide block has a second guide groove adapted to the stainless steel liner, and the third guide block has a third guide groove adapted to the stainless steel liner, the first guide groove, the second guide groove and the third guide groove are sequentially passed through by the stainless steel liner to form a feed channel, and an angle is formed between the guiding directions of the first guide groove, the second guide groove and the third guide groove; The first guide block is arranged at the rear side of the rotating frame, the second guide block and the first guide block are arranged at intervals along the radial direction of the rotating frame, the second guide block is located on the outside of the first guide block and the second guide block is located on the front side of the first guide block, the third guide block is arranged between the walking wheel and the pressing roller of the same rolling assembly, the third guide block and the second guide block are arranged at intervals along the radial direction of the rotating frame, and the first guide block and the second guide block, as well as the second guide block and the third guide block, have a circumferential angle with respect to the circumference of the rotating frame. 2. The underground pipeline spiral winding repair device according to claim 1 is characterized in that the second guide block is swingably assembled with the rotating frame, and the swing center line of the second guide block is perpendicular to the rotation center line of the rotating frame. 3. The underground pipeline spiral winding repair device according to claim 2 is characterized in that the swing angle range of the second guide block is 0-30°. 4. The underground pipeline spiral winding repair device according to any one of claims 1 to 3 is characterized in that a circumferential angle between the first guide block and the second guide block in the circumferential direction of the rotating frame is defined as a first angle, and a circumferential angle between the second guide block and the third guide block in the circumferential direction of the rotating frame is defined as a second angle, and the first angle is equal to the second angle. 5. The underground pipeline spiral winding repair device according to claim 4 is characterized in that the range of the first angle and the second angle is 20-40°. 6. The underground pipeline spiral winding repair device according to any one of claims 1-3 is characterized in that the first guide groove is arranged along the front-to-back direction, the second guide groove is arranged perpendicular to the radial extension of the rotating frame, and the third guide groove extends along the radial direction of the rotating frame. 7. The underground pipeline spiral winding repair device according to any one of claims 1-3 is characterized in that the rotation centerline of the pressing roller is parallel to the rotation centerline of the rotating frame, and there is an angle between the rotation centerline of the walking wheel and the rotation centerline of the rotating frame. 8. The underground pipeline spiral winding repair device according to claim 7 is characterized in that each group of the rolling components includes two groups of the pressing rollers, the two groups of the pressing rollers are parallel to each other and arranged at intervals along the circumference of the rotating frame, and the walking wheel is located between the two groups of the pressing rollers. 9. The underground pipeline spiral winding repair device according to any one of claims 1 to 3 is characterized in that the rotating frame includes a main body seat, an assembly seat, a front plate and a rear plate, the front plate is fixedly assembled on the front side of the main body seat, the driving connecting shaft is fixedly connected to the front plate, the rear plate is fixedly assembled on the rear side of the main body seat, the first guide block is fixedly assembled on the rear side of the rear plate, the assembly seat has multiple groups, and the multiple groups of the assembly seats are evenly spaced along the circumference of the main body seat, and each of the assembly seats is equipped with a group of the rolling components; The assembly seat includes a fixed plate, a support arm and an assembly plate, the fixed plate is fixedly connected to the main seat, one end of the support arm is assembled and connected to the fixed plate, and the other end is assembled and connected to the assembly plate, the support arms have two groups and are arranged at intervals along the front-to-back direction, the assembly plate is an arc structure extending along the circumference of the rotating frame, the rolling assembly is assembled between the two groups of the assembly plates, the second guide block is assembled on the side of the fixed plate close to the assembly plate, and the third guide block is assembled between the two groups of the assembly plates. 10. The underground pipeline spiral winding repair device according to claim 9 is characterized in that the main seat includes a plurality of groups of structural plates arranged at intervals along the front-to-back direction, the structural plates include a rotating disk and a support plate, the rotating disk is fixedly assembled with the driving connecting shaft, and the support plates are arranged in a plurality of groups at intervals along the circumference of the rotating disk, the support plates correspond one-to-one to the assembly seat, and the support plates of each group of the structural plates are fixedly assembled with the fixed plate, and the rotating disk is also provided with a plurality of groups of flow holes for water flow to pass through arranged at intervals circumferentially, and the flow holes penetrate the rotating disk along the front-to-back direction.