A trenchless sewer rehabilitation apparatus

Abstract

The utility model discloses a kind of water supply and drainage pipeline trenchless repair equipment, including trolley, the front end of trolley is equipped with repair air bag, the air port at the rear end of repair air bag is equipped with air pipe, the outer cam surface rear end of air pipe is equipped with air nozzle, air nozzle is communicated with air pipe, further include compaction mechanism;Compaction mechanism: it includes rotating barrel, sliding hole, compaction frame, compaction column and conical column, the rotating barrel is set to the rear end of trolley, the outer cam surface of rotating barrel is opened with evenly distributed sliding hole, the outer cam surface of the column body of compaction frame is all slidably connected with the inner cam surface of radially adjacent sliding hole, compaction column is all rotationally connected between the front and rear inner wall of the one end of compaction frame away from rotating barrel central axis, this water supply and drainage pipeline trenchless repair equipment, by installing compaction column, different pipe diameter pipeline can be accurately adapted and uniformly compacted repair material, avoid the problem that there is bubble or interstice caused by that repair material appears local close not tightly, to improve the degree of adhesion and repair quality.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipeline repair technology, specifically a trenchless repair device for water supply and drainage pipelines. Background Technology

[0002] With the acceleration of urbanization, water supply and drainage pipelines, as an important part of urban infrastructure, are subjected to water erosion, soil pressure and media corrosion for a long time. Inevitably, structural defects such as cracks, leaks and disconnections will appear. Traditional pipeline repair technology usually requires road excavation, which is not only time-consuming and costly, but also has a serious impact on traffic and the surrounding environment. Therefore, trenchless repair technology has received widespread attention and application in the field of pipeline repair due to its advantages such as high efficiency, environmental protection and minimal impact on the surrounding environment.

[0003] Currently, commonly used methods in trenchless repair technology include ultraviolet curing and thermosetting. These methods mainly use airbags to press resin-coated fiberglass cloth onto the inner wall of the pipe, and utilize the resin curing to form a new inner lining layer to achieve repair. The working process is roughly as follows: first, the pipe is cleaned and pre-treated; then, the repair airbag wrapped with fiberglass cloth is placed at the damaged location of the pipe; the airbag is inflated by inflation, causing the fiberglass cloth to tightly adhere to the inner wall of the pipe; finally, the resin is cured to set. However, existing technologies have some problems. During the repair process, the compaction effect of the fiberglass cloth mainly depends on the inflation pressure of the airbag, making it difficult to accurately adjust the pressure according to different pipe diameters, which can easily lead to localized loose adhesion. At the same time, after the airbag is removed, the setting process of the fiberglass cloth lacks dynamic and uniform compaction methods, which may result in air bubbles or gaps between the repair layer and the inner wall of the pipe, affecting the sealing and structural strength after repair. Therefore, we propose a trenchless repair device for water supply and drainage pipelines. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a trenchless repair device for water supply and drainage pipelines. It can accurately adapt to pipelines of different diameters and uniformly compact the repair material, improve the fit and repair quality, and effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a trenchless repair device for water supply and drainage pipelines, including a trolley, a repair airbag at the front end of the trolley, an air pipe at the air inlet at the rear end of the repair airbag, an air nozzle at the rear end of the outer arc surface of the air pipe, the air nozzle being connected to the air pipe, and a compaction mechanism.

[0006] The compaction mechanism includes a rotating drum, sliding holes, a compaction frame, compaction columns, and conical columns. The rotating drum is located at the rear end of the trolley. The outer arc surface of the rotating drum has evenly distributed sliding holes. The outer arc surface of the compaction frame's column is slidably connected to the inner arc surface of the radially adjacent sliding holes. Compaction columns are rotatably connected between the front and rear inner walls of the end of the compaction frame away from the central axis of the rotating drum. An adjustable conical column is located at the rear end of the rotating drum. The conical surface of the conical column is respectively matched with the part of the compaction frame's column located inside the rotating drum. By installing the compaction columns, different pipe diameters can be accurately adapted and the repair material can be evenly compacted, avoiding the problem of air bubbles or gaps caused by localized poor adhesion of the repair material, thereby improving the fit and repair quality.

[0007] Furthermore, a storage battery is provided in the middle of the trolley, and a control switch group is provided at the front end of the trolley. The input end of the control switch group is electrically connected to the output end of the storage battery for stable control.

[0008] Furthermore, the compaction mechanism also includes an installation cylinder, which is located at the upper end of the rear end plate of the trolley. The rear side of the outer arc surface of the installation cylinder is rotatably connected to the inner arc surface of the front side of the rotating drum through a bearing. The outer arc surface of the front end of the rotating drum is provided with a driven gear. The upper side of the rear end plate of the trolley is provided with an installation piece, and the rear side of the installation piece is rotatably connected with a gear. The gear meshes with the driven gear to compact the repair material.

[0009] Furthermore, the gear and the mounting plate are rotatably connected via a rotating shaft. A motor is mounted on the front side of the mounting plate, and the output shaft of the motor is fixedly connected to the center of the front end face of the rotating shaft. The input end of the motor is electrically connected to the output end of the control switch group for stable driving.

[0010] Furthermore, the compaction mechanism also includes a guide rod and an electric cylinder. The guide rod is provided on the rear inner wall of the mounting cylinder. The rear end of the guide rod extends into the interior of the rotating barrel. A tapered column is slidably connected to the rear end of the guide rod. The electric cylinder is installed on the front side of the mounting cylinder. The telescopic end of the electric cylinder passes through the front side wall of the mounting cylinder and is fixedly connected to the front end of the tapered column. The input end of the electric cylinder is electrically connected to the output end of the control switch group, which can adapt to pipes of different sizes.

[0011] Furthermore, each end of the compaction frame column near the central axis of the rotating drum is rotatably connected with ball bearings, which contact the conical surface of the conical column to reduce friction.

[0012] Furthermore, the compaction mechanism also includes limiting plates, which are respectively disposed on the outer arc surface of one end of the compaction frame column located inside the rotating drum. The length of each limiting plate is greater than the diameter of the radially adjacent sliding hole to prevent the compaction frame from detaching from the rotating drum.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This trenchless repair equipment for water supply and drainage pipelines has the following advantages:

[0014] The compaction mechanism uses an electric cylinder to move a conical column back and forth. The cooperation between the conical surface and the ball bearings causes the compaction frame to slide radially along the sliding hole, which in turn drives the compaction column to press against the fiberglass cloth. The expansion range of the compaction frame and the pressure of the compaction column can be adjusted by controlling the extension and retraction of the electric cylinder to adapt to the repair needs of different pipe diameters. At the same time, the motor drives the gear to drive the driven gear to rotate the drum. The compaction frame rotates synchronously with the drum, and the compaction column makes a circular motion to evenly compact the fiberglass cloth, avoiding local air bubbles or poor adhesion. This effectively improves the adhesion between the repair material and the inner wall of the pipe and the repair quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the repaired airbag section of this utility model;

[0017] Figure 3 This is a schematic diagram of the rear structure of the present invention;

[0018] Figure 4 This is an enlarged structural schematic diagram of point A of this utility model;

[0019] Figure 5 This is a partial cross-sectional structural diagram of the rotating drum of this utility model;

[0020] Figure 6 This is an enlarged structural schematic diagram of section B of this utility model.

[0021] In the diagram: 1. Trolley; 2. Compaction mechanism; 21. Mounting cylinder; 22. Rotary drum; 23. Sliding hole; 24. Compaction frame; 241. Ball bearing; 25. Compaction column; 26. Limiting plate; 27. Conical column; 28. Guide rod; 29. ​​Electric cylinder; 3. Repair airbag; 4. Air pipe; 5. Air nozzle; 6. Driven gear; 7. Gear; 8. Motor; 9. Battery; 10. Control switch assembly; 11. Mounting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6This embodiment provides a technical solution: a trenchless repair device for water supply and drainage pipelines, including a trolley 1. A battery 9 is located in the middle of the trolley 1, and a control switch group 10 is located at the front end of the trolley 1. The input terminal of the control switch group 10 is electrically connected to the output terminal of the battery 9. A repair airbag 3 is located at the front end of the trolley 1, and an air pipe 4 is located at the air inlet at the rear end of the repair airbag 3. An air nozzle 5 is located at the rear end of the outer arc surface of the air pipe 4, and the air nozzle 5 is connected to the air pipe 4. First, the upstream pipe section is sealed to ensure that there is no or minimal water accumulation in the repaired pipe section, preventing resin loss and affecting the curing effect. Then, the pipeline is cleaned to remove dirt, oil stains, corrosion, and obstacles affecting the hydraulic performance of the pipe section, ensuring that the resin can adhere to the pipe. The materials are well bonded. Next, the stretch film is wrapped around the repair airbag 3 to prevent the repair material from sticking to the airbag body. Then, the resin is evenly applied to the fiberglass cloth, and then the fiberglass cloth is wrapped into a ring. The fiberglass cloth is wrapped around the surface of the repair airbag 3 by the adhesion of the resin and the friction between the resin and the repair airbag 3. The trolley 1 carries the repair airbag 3 and the compaction mechanism 2 into the pipeline (pulled by manpower or robot to the pipeline damage location). The air nozzle 5 is connected to an external air source (such as an air compressor). The repair airbag 3 is inflated through the air pipe 4, which expands it and makes the resin-coated fiberglass cloth tightly adhere to the inner wall of the pipeline rupture, which facilitates the repair of the ruptured part of the pipeline. The compaction mechanism 2 is also included.

[0024] Compaction mechanism 2 includes a rotating drum 22, sliding holes 23, a compaction frame 24, compaction columns 25, and a conical column 27. The rotating drum 22 is located at the rear end of the trolley 1. The outer arc surface of the rotating drum 22 has evenly distributed sliding holes 23. The outer arc surface of the column of the compaction frame 24 is slidably connected to the inner arc surface of the radially adjacent sliding holes 23. Compaction columns 25 are rotatably connected between the front and rear inner walls of the end of the compaction frame 24 away from the central axis of the rotating drum 22. An adjustable conical column 27 is located at the rear end of the rotating drum 22. The conical surface of the conical column 27 is respectively fitted with the portion of the column of the compaction frame 24 located inside the rotating drum 22. Ball bearings 241 are rotatably connected to the end of the column of the compaction frame 24 near the central axis of the rotating drum 22. All contact the conical surface of the conical column 27. The compaction mechanism 2 also includes limiting plates 26, which are respectively set on the outer arc surface of one end of the column of the compaction frame 24 located inside the rotating drum 22. The length of each limiting plate 26 is greater than the diameter of the radially adjacent sliding hole 23. The compaction mechanism 2 also includes an mounting cylinder 21, which is set on the upper end of the rear end plate of the trolley 1. The rear side of the outer arc surface of the mounting cylinder 21 is rotatably connected to the front inner arc surface of the rotating drum 22 through a bearing. The front outer arc surface of the rotating drum 22 is provided with a driven gear 6. The upper side of the rear end plate of the trolley 1 is provided with a mounting plate 11. The rear side of the mounting plate 11 is rotatably connected with a gear 7. The gear 7 meshes with the driven gear 6. The gear 7 and the mounting plate 11 are rotatably connected through a rotating shaft.A motor 8 is mounted on the front side of the mounting plate 11. The output shaft of the motor 8 is fixedly connected to the center of the front end face of the rotating shaft. The input end of the motor 8 is electrically connected to the output end of the control switch group 10. The compaction mechanism 2 also includes a guide rod 28 and an electric cylinder 29. The guide rod 28 is provided on the rear inner wall of the mounting cylinder 21. The rear end of the guide rod 28 extends into the interior of the rotating barrel 22. A tapered column 27 is slidably connected to the rear end of the guide rod 28. The electric cylinder 29 is mounted on the front side of the mounting cylinder 21. The telescopic end of the electric cylinder 29 penetrates the front wall of the mounting cylinder 21 and is fixedly connected to the front end of the tapered column 27. The input terminal of 9 is electrically connected to the output terminal of the control switch group 10, stopping the inflation of the repair airbag 3. Then, the gas inside the repair airbag 3 is discharged through the exhaust valve located in the middle of the air pipe 4 (the middle of the air pipe 4 has an exhaust pipe, and the middle of the exhaust pipe has an exhaust valve connected in series. The exhaust valve mainly consists of a valve body, a ball, a valve stem, and a handle. Rotating the handle drives the ball to rotate, making the through hole on the ball connect with or perpendicular to the pipe, thereby achieving gas discharge and valve sealing). Next, the traction trolley 1 moves forward, and the control switch group 10 starts the electric cylinder 29, whose telescopic end pushes the conical column 2. 7 moves back and forth along the guide rod 28. When the conical column 27 moves forward, its conical surface is pressed against the inner end of the compaction frame 24 by the ball bearings 241, causing the compaction frame 24 to slide radially outward along the sliding hole 23 of the rotating drum 22. This drives the end compaction column 25 to press against the resin-coated fiberglass cloth. By controlling the extension and retraction of the electric cylinder 29, the position of the conical column 27 can be adjusted, thereby changing the expansion range of the compaction frame 24 and the pressure of the compaction column 25 on the fiberglass cloth, adapting to the repair needs of pipes with different diameters. The control switch group 10 starts the motor 8, which drives the gear 7 to rotate through the rotating shaft. Engaging with the driven gear 6, the rotating drum 22 is driven to rotate around the axis of the mounting cylinder 21. As the drum 22 rotates, the compaction frame 24 rotates synchronously, and the compaction column 25 moves in a circular motion, uniformly compacting the fiberglass cloth and avoiding localized air bubbles or loose adhesion. Finally, the resin-coated fiberglass cloth is cured and molded using ultraviolet light curing or thermosetting methods. The limiting plate 26 in the middle of the compaction frame 24 has a diameter larger than the sliding hole 23 to prevent the compaction frame 24 from detaching from the rotating drum 22 during sliding, ensuring structural stability and compacting the repair material, thus avoiding localized air bubbles or loose adhesion.

[0025] The working principle of the trenchless repair equipment for water supply and drainage pipelines provided by this utility model is as follows: First, the upstream pipe section is sealed to ensure that there is no or minimal water accumulation in the repair section, preventing resin loss and affecting the curing effect. Then, the pipeline is cleaned to remove dirt, oil stains, corrosion, and obstacles that may affect the hydraulic performance of the pipe section, ensuring that the resin can bond well with the pipe material. Next, the stretch film is wrapped around the repair airbag 3 to prevent the repair material from adhering to the airbag body. Then, the resin is evenly applied to the fiberglass cloth, and the fiberglass cloth is then wrapped into a ring. The adhesiveness of the resin and the friction between the fiberglass cloth and the repair airbag 3 force the fiberglass cloth to wrap around the surface of the repair airbag 3. Then, control switch group 10 is removed. Next, trolley 1, carrying repair airbag 3 and compaction mechanism 2, is inserted into the pipeline (manually or by robot to the damaged area). Air nozzle 5 is connected to an external air source (such as an air compressor). Air is inflated into repair airbag 3 through air pipe 4, causing it to expand and tightly adhere the resin-coated fiberglass cloth to the inner wall of the pipeline rupture. After a period of time, inflation of repair airbag 3 is stopped. Then, the gas inside repair airbag 3 is discharged through the exhaust valve located in the middle of air pipe 4 (the middle of air pipe 4 has an exhaust pipe, and the middle of the exhaust pipe has an exhaust valve connected in series; the exhaust valve mainly consists of a valve body, ball, valve stem, and handle, etc., and is activated by rotating the handle). The sphere rotates, aligning or perpendicularing the through-hole on the sphere with the pipe, thus facilitating gas discharge and valve sealing. Next, the traction trolley 1 moves forward, and the control switch group 10 activates the electric cylinder 29. Its telescopic end pushes the conical column 27 back and forth along the guide rod 28. As the conical column 27 moves forward, its conical surface, through the ball bearings 241, presses against the inner end of the compaction frame 24, causing the compaction frame 24 to slide radially outward along the sliding hole 23 of the rotating drum 22. This drives the end compaction column 25 to press against the resin-coated fiberglass cloth. By controlling the telescopic amount of the electric cylinder 29, the position of the conical column 27 can be adjusted, thereby changing the expansion range of the compaction frame 24 and the position of the compaction column 25 against the glass. The pressure of the fiber cloth adapts to the repair needs of pipes with different diameters. The control switch group 10 starts the motor 8, which drives the gear 7 to rotate through the shaft. The gear 7 meshes with the driven gear 6, driving the rotating drum 22 to rotate around the axis of the mounting cylinder 21. When the rotating drum 22 rotates, the compaction frame 24 rotates synchronously with it, and the compaction column 25 moves in a circular motion to evenly compact the fiber cloth, avoiding problems such as local air bubbles or loose adhesion. Finally, the fiber cloth coated with resin is cured and formed by ultraviolet light curing or heat curing. The diameter of the limiting piece 26 in the middle of the compaction frame 24 is larger than that of the sliding hole 23 to prevent the compaction frame 24 from detaching from the rotating drum 22 during the sliding process, ensuring structural stability.

[0026] It is worth noting that the electric cylinder 29 disclosed in the above embodiments can be a LESH series electric cylinder, the motor 8 can be model 57BLDCM-0401, the battery 9 can be a conventional lithium battery, and the control switch group 10 is provided with control buttons that correspond one-to-one with the electric cylinder 29 and the motor 8 and are used for controller switching.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A trenchless repair device for water supply and drainage pipelines, comprising a trolley (1), wherein a repair airbag (3) is provided at the front end of the trolley (1), an air pipe (4) is provided at the air inlet at the rear end of the repair airbag (3), and an air nozzle (5) is provided at the rear end of the outer arc surface of the air pipe (4), the air nozzle (5) being connected to the air pipe (4), characterized in that: It also includes a compaction mechanism (2); Compaction mechanism (2): It includes a rotating drum (22), sliding holes (23), a compaction frame (24), a compaction column (25), and a conical column (27). The rotating drum (22) is located at the rear end of the trolley (1). The outer arc surface of the rotating drum (22) is provided with evenly distributed sliding holes (23). The outer arc surface of the column of the compaction frame (24) is slidably connected to the inner arc surface of the radially adjacent sliding holes (23). The front and rear inner walls of the compaction frame (24) away from the central axis of the rotating drum (22) are rotatably connected with compaction columns (25). The rear end of the rotating drum (22) is provided with an adjustable conical column (27). The conical surface of the conical column (27) is respectively matched with the part of the column of the compaction frame (24) located inside the rotating drum (22).

2. The trenchless repair equipment for water supply and drainage pipelines according to claim 1, characterized in that: The trolley (1) is provided with a storage battery (9) in the middle and a control switch group (10) at the front end of the trolley (1). The input end of the control switch group (10) is electrically connected to the output end of the storage battery (9).

3. The trenchless repair equipment for water supply and drainage pipelines according to claim 2, characterized in that: The compaction mechanism (2) also includes an installation cylinder (21), which is located at the upper end of the rear plate of the trolley (1). The rear side of the outer arc surface of the installation cylinder (21) is rotatably connected to the inner arc surface of the front side of the rotating drum (22) through a bearing. The outer arc surface of the front end of the rotating drum (22) is provided with a driven gear (6). The upper side of the rear plate of the trolley (1) is provided with an installation piece (11). The rear side of the installation piece (11) is rotatably connected with a gear (7), which meshes with the driven gear (6).

4. The trenchless repair equipment for water supply and drainage pipelines according to claim 3, characterized in that: The gear (7) and the mounting plate (11) are rotatably connected by a rotating shaft. A motor (8) is mounted on the front side of the mounting plate (11). The output shaft of the motor (8) is fixedly connected to the center of the front end face of the rotating shaft. The input end of the motor (8) is electrically connected to the output end of the control switch group (10).

5. The trenchless repair equipment for water supply and drainage pipelines according to claim 3, characterized in that: The compaction mechanism (2) also includes a guide rod (28) and an electric cylinder (29). The rear inner wall of the mounting cylinder (21) is provided with a guide rod (28). The rear end of the guide rod (28) extends into the interior of the rotating barrel (22). The rear end of the guide rod (28) is slidably connected to a tapered column (27). The electric cylinder (29) is installed on the front side of the mounting cylinder (21). The telescopic end of the electric cylinder (29) passes through the front side wall of the mounting cylinder (21) and is fixedly connected to the front end of the tapered column (27). The input end of the electric cylinder (29) is electrically connected to the output end of the control switch group (10).

6. The trenchless repair equipment for water supply and drainage pipelines according to claim 1, characterized in that: The compaction frame (24) has a ball bearing (241) rotatably connected to one end of the column near the central axis of the rotating drum (22), and the ball bearing (241) is in contact with the conical surface of the conical column (27).

7. The trenchless repair equipment for water supply and drainage pipelines according to claim 1, characterized in that: The compaction mechanism (2) also includes a limiting piece (26), which is respectively set on the outer arc surface of the column of the compaction frame (24) located inside the rotating barrel (22). The length of the limiting piece (26) is greater than the diameter of the radially adjacent sliding hole (23).

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