Pipeline repairing device

Abstract

The utility model belongs to the technical field of pipeline repairing, and particularly discloses a pipeline repairing device which comprises an expansion ring and a driving air cylinder. A piston is arranged in the driving air cylinder, a push rod is arranged on one side of the piston, one end of the push rod is sleeved with a first fixing ring, a plurality of first connecting rods are arranged on the first fixing ring in the circumferential direction, one ends of the first connecting rods are rotationally connected with the first fixing ring, and the other ends of the first connecting rods are rotationally connected with the expansion ring. One end of the main shaft is inserted into the blind hole, and a second fixing ring is fixedly arranged at the other end of the main shaft and rotationally connected with the expansion ring through a second connecting rod. Through the arrangement of the expansion rings and the driving air cylinder, the piston and the push rod in the driving air cylinder can be driven to move through equipment such as an external booster pump, so that the two arc-shaped expansion rings move in the radial direction, and as the radial movement of the expansion rings is mechanically driven by the connecting rod, it is guaranteed that the whole expansion rings move synchronously in the radial direction; and the adhesion smoothness of the repaired lining is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline repair, and in particular relates to a pipeline repair device. Background Art

[0002] During long-term use, underground pipelines may break due to factors such as material aging, soil corrosion, and external loads. Traditional pipeline repair requires large-scale excavation of the ground, which is not only labor-intensive but may also cause traffic congestion. With the continuous maturity of trenchless pipeline repair technology, the above problems can be effectively solved. For example, Chinese patent publication number CN220623213U discloses an airbag for pipeline repair. When repairing a pipeline, the roller is tightly attached to the inner wall of the pipeline to be repaired, the airbag body is moved into the position where the pipeline needs to be repaired, and the airbag is inflated by an external booster pump or other equipment so that the repair lining is tightly attached to the inner wall of the pipeline. However, during the inflation process of the airbag, as the number of repeated uses increases, it is difficult to ensure that the surface of the airbag bulges at the same time, and there is a problem of the repair lining being twisted or creased. In addition, when using the airbag for pipeline repair, in order to ensure the repair effect, it is generally necessary to wrap the repair lining around the airbag. When repairing problems such as sand holes and small holes in the pipeline, the repair lining is wasted. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects in the prior art and provide a pipeline repair device.

[0004] The utility model provides a pipeline repair device, comprising an expansion ring and a driving cylinder for driving the expansion ring to move radially;

[0005] The expansion ring is a two-symmetrical arc structure, and a main shaft is arranged along the axial direction of the expansion ring;

[0006] A piston is provided inside the driving cylinder, a push rod is provided on one side of the piston, a first fixing ring is sleeved on an end of the push rod away from the piston, a plurality of first connecting rods are circumferentially provided on the first fixing ring, one end of the first connecting rod is rotatably connected to the first fixing ring, and the other end of the first connecting rod is rotatably connected to the expansion ring, a first spring is further provided inside the driving cylinder, the first spring is sleeved on the outside of the push rod, one end of the first spring is connected to the piston, and the other end of the first spring abuts against an inner wall of the driving cylinder on one side close to the first fixing ring;

[0007] A blind hole is provided in the push rod, one end of the main shaft is inserted into the blind hole and is slidably connected to the blind hole, a second fixing ring is fixedly provided on the other end of the main shaft, a plurality of second connecting rods are circumferentially provided on the second fixing ring, one end of the second connecting rod is rotatably connected to the second fixing ring, and the other end of the second connecting rod is rotatably connected to the expansion ring.

[0008] A further solution is that a central column is sleeved on the main shaft, and the position of the central column is adapted to the expansion ring;

[0009] At least two groups of second springs are evenly arranged on the circumference of the central column, one end of the second spring is connected to the inner wall of the expansion ring, and the other end of the second spring is connected to the central column.

[0010] A further solution is that two groups of the second springs are respectively located at two ends of the central column; the number of the second springs in each group is set to six.

[0011] A further solution is that a plurality of sliding grooves are evenly formed on the inner wall of the blind hole, and convex strips corresponding to the sliding grooves are provided on the outer side of the main shaft, and the convex strips are slidably connected to the sliding grooves.

[0012] A further solution is that the end of the driving cylinder and the end of the second fixing ring are both provided with a fixing column, and the fixing column is sleeved with a moving wheel set;

[0013] The movable wheel assembly includes two mounting rings, which are respectively mounted on both ends of the fixed column. Three adjustment shafts are evenly arranged between the two mounting rings. A slider and a third spring are mounted on each adjustment shaft. One end of the third spring is connected to the mounting ring, and the other end of the third spring is connected to the slider.

[0014] The end of the mounting ring away from the third spring is connected to a roller through a wheel arm, and the wheel arm and the mounting ring are connected through a hinge seat. A support arm is provided on the slider, one end of the support arm is hinged to the slider, and the other end of the support arm is hinged to the middle of the wheel arm.

[0015] A further solution is that a brake cylinder is provided inside the fixed column that drives the cylinder, the output end of the brake cylinder extends vertically upward and a brake pad is provided at the output end of the brake cylinder, and the surface of the brake pad is an arc-shaped structure.

[0016] A further solution is that two air inlet holes are opened axially on the fixed column near the driving cylinder for connecting to an external booster device. One air inlet hole is connected to the driving cylinder, and the other air inlet hole is connected to the brake cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The present invention provides an expansion ring and a driving cylinder, and can drive the piston and push rod in the driving cylinder to move through an external booster pump or other equipment, thereby driving the first fixed ring to move, so that the two arc-shaped expansion rings move radially, and the repair lining provided on the surface of the expansion ring can be tightly attached to the wall of the pipe to be repaired. Since the radial movement of the expansion ring is mechanically driven by the connecting rod, the expansion ring can be synchronously moved radially as a whole, thereby ensuring the smoothness of the repair lining. In addition, when repairing a small area of ​​the pipeline, a repair lining corresponding to the area to be repaired can be selected, which improves the repair accuracy while saving the repair lining.

[0019] (2) The utility model provides a first spring in the driving cylinder. When the repaired lining is pressed against the pipe wall, the pressure is relieved by a booster pump or other equipment. The first spring can ensure that the piston returns to its initial state smoothly. Similarly, a second spring is provided between the expansion ring and the center column, which can also ensure that the expansion ring moves quickly to its initial state.

[0020] (3) The utility model is provided with a moving wheel set on the outside of the fixed column, so as to facilitate the rapid movement of the repair device to the area to be repaired. Through the cooperation of the slider and the third spring, it can also be applied to pipes with different inner diameters.

[0021] (4) The utility model provides a brake device on the fixed column. When the repair device reaches the repair area, the brake device is activated to ensure the stability of the pipeline repair process and further improve the repair accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0023] Figure 1 : Schematic diagram of the structure of the utility model;

[0024] Figure 2 : Schematic diagram of the internal structure of the driving cylinder;

[0025] Figure 3 : Schematic diagram of the mobile wheel structure;

[0026] Figure 4 : Schematic diagram of the brake assembly structure;

[0027] Figure 5 : Schematic diagram of the expansion ring status during the repair process;

[0028] In the figure: 1. Expansion ring; 2. Driving cylinder; 3. Moving wheel group; 4. Piston; 5. Push rod; 6. Blind hole; 7. Main shaft; 8. First fixing ring; 9. First connecting rod; 10. First spring; 11. Center axis; 12. Second spring; 13. Second fixing ring; 14. Second connecting rod; 15. Fixing column; 16. Mounting ring; 17. Roller; 18. Adjusting shaft; 19. Slider; 20. Third spring; 21. Articulated seat; 22. Wheel arm; 23. Support arm; 24. Brake cylinder; 25. Brake pad; 26. Air inlet; 27. Repair lining. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution, design method and advantages of the present invention more clear, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

[0030] like Figure 1 and Figure 2As shown, the utility model provides a pipeline repair device, including a tightening ring 1 and a driving cylinder 2 for driving the tightening ring 1 to move radially; wherein the tightening ring 1 is a two symmetrical arc-shaped structure, and a main shaft 7 is arranged along the axial direction of the tightening ring 1; a piston 4 is arranged inside the driving cylinder 2, and a push rod 5 is arranged on one side of the piston 4, and a first fixing ring 8 is sleeved on the end of the push rod 5 away from the piston 4, and the first fixing ring 8 is circumferentially provided with a plurality of first connecting rods 9, one end of the first connecting rod 9 is rotatably connected to the first fixing ring 8, and the other end of the first connecting rod 9 is rotatably connected to the tightening ring 1, and the driving cylinder 2 is also provided with A first spring 10 is provided. The first spring 10 is sleeved on the outside of the push rod 5, and one end of the first spring 10 is connected to the piston 4. The other end of the first spring 10 abuts against the inner wall of the driving cylinder 2 near the first fixing ring 8. A blind hole 6 is provided in the push rod 5, and one end of the main shaft 7 is inserted into the blind hole 6 and slidably connected thereto. A second fixing ring 13 is fixedly provided on the other end of the main shaft 7. The second fixing ring 13 is circumferentially provided with a plurality of second connecting rods 14. One end of the second connecting rod 14 is rotatably connected to the second fixing ring 13, and the other end of the second connecting rod 14 is rotatably connected to the expansion ring 1. The inner wall of the blind hole 6 is evenly provided with a plurality of sliding grooves. The outer side of the main shaft 7 is provided with ridges corresponding to the sliding grooves, and the ridges are slidably connected to the sliding grooves. The drive cylinder 2 is inflated by an external booster pump or other device, causing the piston 4 and push rod 5 to move forward. Because the main shaft 7 is slidably connected to the blind hole 6, the main shaft 7 remains stationary while the push rod 5 moves. The push rod 5 drives the first fixed ring 8 to move, propping up the expansion ring 1 so that it is close to the pipe wall to be repaired. It is important to understand that before repairing, a comprehensive inspection of the pipeline is required to understand the extent of damage, location, diameter, material, and other information. The glue-coated repair liner 27 is placed outside the expansion ring 1. As the expansion ring 1 is expanded, the repair liner 27 is bonded to the inner wall of the pipe to be repaired.

[0031] In order to ensure that the expansion ring 1 quickly returns to its original position after the repair is completed, a central column 11 is sleeved on the main shaft 7, and the position of the central column 11 is adapted to the expansion ring 1; at least two groups of second springs 12 are evenly arranged on the circumference of the central column 11, one end of the second spring 12 is connected to the inner wall of the expansion ring 1, and the other end of the second spring 12 is connected to the central column 11, and two groups of second springs 12 are respectively located at both ends of the central column 11; the number of the second springs 12 in each group is set to six.

[0032] In order to facilitate the movement of the repair device, such as Figure 2 and Figure 3As shown, a fixed column 15 is provided at the end of the driving cylinder 2 and the end of the second fixed ring 13, and a moving wheel group 3 is provided on the fixed column 15, and the repair device can be towed to the area to be repaired by a traction rope or other device; the moving wheel group 3 includes two mounting rings 16, and the two mounting rings 16 are respectively mounted on both ends of the fixed column 15, and three adjusting shafts 18 are evenly arranged between the two mounting rings 16, and each adjusting shaft 18 is mounted with a slider 19 and a third spring 20, one end of the third spring 20 is connected to the mounting ring 16, and the other end of the third spring 20 is connected to the slider 19; the end of the mounting ring 16 away from the third spring 20 is connected to the roller 17 through a wheel arm 22, and the wheel arm 22 is connected to the mounting ring 16 through a hinge seat 21, and a support arm 23 is provided on the slider 19, one end of the support arm 23 is hinged to the slider 19, and the other end of the support arm 23 is hinged to the middle part of the wheel arm 22. The cooperation between the slider 19 and the third spring 20 makes the moving wheel set 3 suitable for pipes with different inner diameters. In order to ensure the stability of the repair process, Figure 4 As shown, a brake cylinder 24 is provided inside the fixed column 15 that drives the cylinder 2. The extension direction of the output end of the brake cylinder 24 is vertically upward, and a brake pad 25 is provided at the output end of the brake cylinder 24. The surface of the brake pad 25 is an arc-shaped structure. Two air inlet holes 26 are axially provided on the fixed column 15 close to the driving cylinder 2 for connecting to an external air inlet hole 26 for connecting to an external boosting device. One of the air inlet holes 26 is connected to the driving cylinder 2, and the other air inlet hole 26 is connected to the brake cylinder 24. When the repair device is moved to the area to be repaired, the brake cylinder 24 is first inflated using an external boosting device so that the brake pad 25 abuts against the pipe wall to ensure the stability of the repair device, and then the driving cylinder 2 is inflated. Figure 5 As shown, the expansion ring 1 moves radially under the action of the first connecting rod 9 until the repair liner 27 abuts against and adheres to the pipe wall to be repaired.

[0033] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pipeline repair device, characterized in that: It comprises an expansion ring (1) and a driving cylinder (2) for driving the expansion ring (1) to move radially; The expansion ring (1) is a two-symmetrical arc-shaped structure, and a main shaft (7) is arranged along the axial direction of the expansion ring (1); A piston (4) is provided inside the driving cylinder (2), a push rod (5) is provided on one side of the piston (4), a first fixing ring (8) is sleeved on one end of the push rod (5) away from the piston (4), a plurality of first connecting rods (9) are circumferentially provided on the first fixing ring (8), one end of the first connecting rod (9) is rotatably connected to the first fixing ring (8), and the other end of the first connecting rod (9) is rotatably connected to the expansion ring (1), a first spring (10) is further provided inside the driving cylinder (2), the first spring (10) is sleeved on the outside of the push rod (5), one end of the first spring (10) is connected to the piston (4), and the other end of the first spring (10) abuts against the inner wall of one side of the driving cylinder (2) close to the first fixing ring (8); A blind hole (6) is provided in the push rod (5), one end of the main shaft (7) is inserted into the blind hole (6) and is slidably connected to the blind hole (6), and a second fixing ring (13) is fixedly provided on the other end of the main shaft (7), and a plurality of second connecting rods (14) are circumferentially provided on the second fixing ring (13), one end of the second connecting rod (14) is rotatably connected to the second fixing ring (13), and the other end of the second connecting rod (14) is rotatably connected to the expansion ring (1).

2. A pipeline repair device according to claim 1, characterized in that: A center column (11) is sleeved on the main shaft (7), and the position of the center column (11) is adapted to the expansion ring (1); At least two groups of second springs (12) are evenly arranged on the circumference of the central column (11), one end of the second spring (12) is connected to the inner wall of the expansion ring (1), and the other end of the second spring (12) is connected to the central column (11).

3. A pipeline repair device according to claim 2, characterized in that: Two groups of the second springs (12) are respectively located at two ends of the central column (11); the number of the second springs (12) in each group is set to six.

4. A pipeline repair device according to claim 3, characterized in that: The inner wall of the blind hole (6) is evenly provided with a plurality of sliding grooves, and the outer side of the main shaft (7) is provided with convex strips corresponding to the sliding grooves, and the convex strips are slidably connected to the sliding grooves.

5. The pipeline repair device according to claim 1, characterized in that: The ends of the driving cylinder (2) and the second fixing ring (13) are both provided with fixing columns (15), and the fixing columns (15) are sleeved with a moving wheel set (3); The movable wheel group (3) comprises two mounting rings (16), the two mounting rings (16) are respectively mounted on both ends of the fixed column (15), three adjustment shafts (18) are evenly arranged between the two mounting rings (16), each of the adjustment shafts (18) is mounted with a slider (19) and a third spring (20), one end of the third spring (20) is connected to the mounting ring (16), and the other end of the third spring (20) is connected to the slider (19); One end of the mounting ring (16) away from the third spring (20) is connected to a roller (17) via a wheel arm (22), and the wheel arm (22) is connected to the mounting ring (16) via a hinge seat (21). A support arm (23) is provided on the slider (19), one end of the support arm (23) is hinged to the slider (19), and the other end of the support arm (23) is hinged to the middle of the wheel arm (22).

6. A pipeline repair device according to claim 5, characterized in that: A brake cylinder (24) is provided inside a fixed column (15) for driving the cylinder (2), the output end of the brake cylinder (24) extends vertically upward, and a brake pad (25) is provided at the output end of the brake cylinder (24), and the surface of the brake pad (25) is an arc-shaped structure.

7. A pipeline repair device according to claim 6, characterized in that: A fixed column (15) close to the driving cylinder (2) is provided with two air inlet holes (26) along the axial direction for connecting to an external air inlet hole (26) for connecting to an external boosting device, one of the air inlet holes (26) is communicated with the driving cylinder (2), and the other air inlet hole (26) is communicated with the brake cylinder (24).

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