A herringbone chain for treating the inner wall of a concrete pipe

Abstract

The application discloses a reversed tooth chain for treating the inner wall of a concrete pipe and belongs to the technical field of concrete pipe treatment. The reversed tooth chain comprises a high-pressure pipeline, a high-pressure rotating head rotatably connected to the end of the high-pressure pipeline, a limiting mechanism arranged on the outer wall of the high-pressure pipeline and used for centrally placing the high-pressure pipeline in the inner wall of the concrete pipe, and a chain mechanism arranged on the outer wall of the high-pressure rotating head. The chain mechanism comprises a rotating reversed tooth. The reversed tooth is driven to rotate along the axis of the high-pressure rotating head by external force and is used for the gouging treatment of the inner wall of the pipe. The application leaves scratches under the action of the rotating scraping of the reversed tooth. When subsequent grouting or sprayed concrete is carried out, the application can increase the direct contact area of new and old concrete, can firmly bond the new and old concrete, and can prevent the grouting layer or the sprayed layer from falling off due to the existence of scale and excessive smoothness of the inner wall of the pipe.

Description

Technical Field

[0001] This application relates to the field of concrete pipe treatment technology, and more specifically, to a toothed chain for treating the inner wall of concrete pipes. Background Technology

[0002] Concrete pipes are circular pipes made primarily of cement, aggregates (sand, stone) and water through a specific production process. They are characterized by high strength, strong load-bearing capacity, good durability, and long service life. From common urban drainage to large-scale water conservancy projects, they are a fundamental and irreplaceable material.

[0003] In trenchless pipeline repair, many repair processes require the pouring or spraying of concrete, such as spiral winding, lining, and spraying, to bond the concrete to the inner wall of the pipeline and form a cold joint. Before repair, high-pressure cleaning nozzles are usually used to clean the inner wall of the pipeline using extremely high-pressure water flow.

[0004] Through long-term observation, it has been found that the inner walls of most concrete pipes are relatively smooth, which results in a less than ideal bonding effect between the old and new concrete after pouring or spraying concrete. This is especially true for pipes with smaller diameters or complex shapes, where the smooth inner walls can easily affect the subsequent adhesion of the concrete.

[0005] In view of this, we propose a toothed chain for treating the inner wall of concrete pipes. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this application proposes a toothed chain for treating the inner wall of concrete pipes.

[0007] This application provides a toothed chain for treating the inner wall of concrete pipes, comprising: A high-pressure pipeline, wherein a high-pressure rotor is rotatably connected to the end of the high-pressure pipeline; The limiting mechanism is installed on the outer wall of the high-pressure pipeline to center the high-pressure pipeline on the inner wall of the concrete pipe. The chain mechanism is located on the outer wall of the high-pressure rotor; The chain mechanism includes rotatably arranged reverse teeth, which are driven by external force to rotate along the axial direction of the high-pressure rotor for roughening the inner wall of the pipe.

[0008] As an optional solution to the technical solution of this application, the chain mechanism further includes a fixed frame fixed to the top of the high-pressure rotor. An outer chain plate is rotatably connected to the end of the fixed frame, and an inner chain plate is rotatably connected inside the outer chain plate. There are several outer chain plates and inner chain plates, which are connected in a corresponding manner. The outer chain plates and inner chain plates are wound around the high-pressure rotor, and the reverse teeth are fixedly connected to the outermost outer chain plate.

[0009] As an optional solution to the technical solution in this application, the high-pressure rotor is equipped with multiple nozzles A and B in the middle, and the drain holes on the multiple nozzles A and B are set at different angles.

[0010] As an optional solution to the technical solution of this application, the limiting mechanism includes several fixed seats fixed to the outer wall of the high-pressure pipeline. The side wall of the fixed seat is provided with a connecting frame. The connecting frame and bolt A are fixedly connected by two bolts A. The side wall of the connecting frame is provided with a support plate for contacting the inner wall of the concrete pipe and providing centered support for the high-pressure pipeline. The connecting frame and the support plate are fixedly connected by two bolts B.

[0011] As an optional solution to the technical solution in this application, the support plate has multiple adjustment holes in the middle, which are used to adjust the height of the support plate with bolt B.

[0012] As an optional solution to the technical solution in this application, the reverse teeth are made of thick steel plates, and the reverse teeth are 1.5cm higher than the side wall of the outer chain plate.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: (1) This application uses rotating reverse teeth, which leave scratches by rotating and scraping the reverse teeth. This increases the direct contact area between the new and old concrete during subsequent grouting or spraying, so that the new and old concrete can be firmly bonded together, preventing the grouting layer or spraying layer from falling off due to scale on the inner wall of the pipe or excessive smoothness.

[0014] (2) This application can improve the overall stability of the high-pressure pipeline during use by unfolding the support plate, so that multiple inverted teeth can uniformly scrape the inner wall of the concrete pipeline and reduce the problem of shaking of the high-pressure pipeline during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a toothed chain for treating the inner wall of a concrete pipe, as disclosed in a preferred embodiment of this application. Figure 2 for Figure 2 Enlarged view of point A; Figure 3 This is a schematic diagram of a high-pressure rotor structure for a reverse toothed chain used for treating the inner wall of a concrete pipe, as disclosed in a preferred embodiment of this application. Figure 4 This is a schematic diagram of the reverse tooth structure of a reverse tooth chain for treating the inner wall of a concrete pipe, as disclosed in a preferred embodiment of this application. Figure 5This is a schematic diagram of the support plate structure of the reverse toothed chain for treating the inner wall of a concrete pipe, as disclosed in a preferred embodiment of this application. The following are the labels in the diagram: 1. High-pressure pipeline; 11. High-pressure rotor; 12. Nozzle A; 13. Nozzle B; 2. Limiting mechanism; 21. Fixed base; 22. Connecting frame; 23. Bolt A; 24. Support plate; 241. Adjustment hole; 25. Bolt B; 3. Chain mechanism; 31. Reverse tooth; 32. Fixed frame; 33. Outer chain plate; 34. Inner chain plate. Detailed Implementation

[0016] The present application will be further described in detail below with reference to the accompanying drawings.

[0017] Reference Figures 1-5 This application discloses a toothed chain for treating the inner wall of a concrete pipe, comprising a high-pressure pipe 1, a limiting mechanism 2, and a chain mechanism 3. A high-pressure rotor 11 is rotatably connected to the end of the high-pressure pipe 1. The chain mechanism 3 includes rotatably arranged teeth 31, which are driven by external force to rotate axially along the high-pressure rotor 11 for roughening the inner wall of the pipe. The chain mechanism 3 also includes a fixing frame 32 fixed to the top of the high-pressure rotor 11. An outer chain plate 33 is rotatably connected to the end of the fixed frame 32. An inner chain plate 34 is rotatably connected inside the outer chain plate 33. There are several outer chain plates 33 and inner chain plates 34, which are connected and arranged accordingly. The outer chain plates 33 and inner chain plates 34 are wound around the high-pressure rotor 11. The reverse tooth 31 is fixedly connected to the outermost outer chain plate 33. Multiple nozzles A12 and B13 are installed in the middle of the high-pressure rotor 11. The drain holes on the multiple nozzles A12 and B13 are all set at different angles. The reverse tooth 31 is made of thick steel plate and the reverse tooth 31 is 1.5cm higher than the side wall of the outer chain plate 33. First, multiple outer chain plates 33 and inner chain plates 34 can be connected together using the fixing frame 32. Then, the high-pressure pipe 1 is connected to the external high-pressure output end. After inserting the high-pressure pipe 1 into the pipe, the position of the high-pressure pipe 1 is limited by the limiting mechanism 2. Subsequently, the external water flow switch is activated, and the water pressure itself drives a micro turbine, causing the high-pressure rotor 11 to rotate at the end of the high-pressure pipe 1. At the same time, multiple outer chain plates 33 and the fixing frame 32 can rotate on the high-pressure rotor 11, and the reverse teeth 31 scrape against the inner wall of the pipe during rotation. Under high-frequency rotation, the reverse teeth 31... 1 can remove hard structures inside the pipe, and the reverse teeth 31 can leave scratches on the pipe wall. Through continuous rotation, the effect of scraping the pipe wall is achieved. This step leaves scratches under the scraping action of the reverse teeth 31, which can increase the direct contact area between the new and old concrete during subsequent grouting or shotcreting, so that the new and old concrete can be firmly bonded together, preventing the grouting layer or shotcreting layer from falling off due to scale on the inner wall of the pipe or excessive smoothness. The chain connection process allows the high-pressure pipe 1 to swing with the shape of the pipe. When it encounters hard obstacles, it can swing with it, achieving a flexible effect in the treatment of the inner wall of the pipe.

[0018] Reference Figure 1 and Figure 5 The limiting mechanism 2 includes several fixed seats 21 fixed to the outer wall of the high-pressure pipeline 1. The side wall of the fixed seat 21 is provided with a connecting frame 22. The connecting frame 22 and the bolt A23 are fixedly connected by two bolts A23. The side wall of the connecting frame 22 is provided with a support plate 24, which is used to contact the inner wall of the concrete pipe and provide central support for the high-pressure pipeline 1. The connecting frame 22 and the support plate 24 are fixedly connected by two bolts B25. The support plate 24 has multiple adjustment holes 241 in the middle, which are used to adjust the height of the support plate 24 with the bolts B25. During the insertion of the high-pressure pipe 1 into the pipeline, multiple unfolded support plates 24 can contact the inner wall area of ​​the pipe, ensuring that the high-pressure pipe 1 is centered within the pipeline. This allows the chain mechanism 3 to evenly process the inner wall of the pipe during subsequent use. When the working position of the support plates 24 needs to be adjusted, two bolts A23 can be loosened, and two bolts B25 can be engaged in the designated adjustment holes 241. These holes can be engaged in pipes of different diameters. This step, with the unfolded support plates 24, improves the overall stability of the high-pressure pipe 1 during use, allowing multiple countersunk teeth 31 to evenly scrape the inner wall of the concrete pipe and reduce the shaking problem of the high-pressure pipe 1 during use. Furthermore, with the help of the adjustment holes 241, the support plates 24 can be adapted to pipes of different diameters, improving their flexibility during use.

[0019] In summary, the reverse-tooth chain for treating the inner wall of concrete pipes disclosed in this application can be used by first connecting multiple outer chain plates 33 and inner chain plates 34 together via a fixing frame 32. Then, the high-pressure pipe 1 is connected to an external high-pressure output end. After inserting the high-pressure pipe 1 into the pipe, the position of the high-pressure pipe 1 is limited by the limiting mechanism 2. Subsequently, the external water flow switch is activated, using the water pressure itself to drive a micro turbine, causing the high-pressure rotor 11 to rotate at the end of the high-pressure pipe 1. Simultaneously, multiple outer chain plates 33 and the fixing frame 32 can rotate on the high-pressure rotor 11, and the reverse teeth 31 scrape against the inner wall of the pipe during rotation. Under the frequency of rotation, the reverse teeth 31 can remove hard structures inside the pipe and leave scratches on the pipe wall. After continuous rotation, the effect of scraping the pipe wall is achieved. During the process of the high-pressure pipe 1 being inserted into the pipe, multiple unfolded support plates 24 can contact the inner wall area of ​​the pipe, so that the high-pressure pipe 1 can be in a centered state inside the pipe. This allows the chain mechanism 3 to evenly process the inner wall of the pipe during subsequent use. When it is necessary to adjust the working position of the support plate 24, the two bolts A23 can be loosened, and the two bolts B25 can be locked in the designated adjustment hole 241, which can be locked in the inner wall of pipes of different diameters.

Claims

1. A toothed chain for treating the inner wall of a concrete pipe, characterized in that, Include: High-pressure pipeline (1), with a high-pressure rotor (11) rotatably connected to the end of the high-pressure pipeline (1); The limiting mechanism (2) is set on the outer wall of the high-pressure pipeline (1) and is used to center the high-pressure pipeline (1) on the inner wall of the concrete pipe. The chain mechanism (3) is installed on the outer wall of the high-pressure rotor (11); The chain mechanism (3) includes a rotatably arranged inverted tooth (31), which is driven by an external force to rotate axially along the high-pressure rotor (11) for roughening the inner wall of the pipe.

2. The reverse toothed chain for treating the inner wall of concrete pipes according to claim 1, characterized in that: The chain mechanism (3) also includes a fixed frame (32) fixed on the top of the high-pressure turn head (11). The fixed frame (32) is rotatably connected to an outer chain plate (33). An inner chain plate (34) is rotatably connected inside the outer chain plate (33). There are several outer chain plates (33) and inner chain plates (34) and they are connected in a corresponding manner. The outer chain plates (33) and inner chain plates (34) are wound around the high-pressure turn head (11). The reverse tooth (31) is fixedly connected to the outermost outer chain plate (33).

3. The reverse toothed chain for treating the inner wall of concrete pipes according to claim 1, characterized in that: The high-pressure rotor (11) is equipped with multiple nozzles A (12) and nozzles B (13) in the middle, and the drain holes on the multiple nozzles A (12) and nozzles B (13) are set at different angles.

4. The reverse toothed chain for treating the inner wall of concrete pipes according to claim 1, characterized in that: The limiting mechanism (2) includes several fixed seats (21) fixed on the outer wall of the high-pressure pipe (1). The side wall of the fixed seat (21) is provided with a connecting frame (22). The connecting frame (22) and bolt A (23) are fixedly connected by two bolts A (23). The side wall of the connecting frame (22) is provided with a support plate (24) for contacting the inner wall of the concrete pipe and providing central support for the high-pressure pipe (1). The connecting frame (22) and the support plate (24) are fixedly connected by two bolts B (25).

5. The reverse toothed chain for treating the inner wall of concrete pipes according to claim 4, characterized in that: The support plate (24) has multiple adjustment holes (241) in the middle, which are used to adjust the height of the support plate (24) with bolts B (25).

6. The reverse toothed chain for treating the inner wall of concrete pipes according to claim 1, characterized in that: The reverse tooth (31) is made of thick steel plate, and the reverse tooth (31) is 1.5cm higher than the side wall of the outer chain plate (33).

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