Pipeline anti-blocking cleaning auxiliary forming support assembly

By designing pipe anti-blocking cleaning assistance to form a bracket assembly, the combination of telescopic arm, angle rotating seat and connecting frame is used to solve the problem of low cleaning efficiency of existing devices in bending pipes, achieving flexible adaptability and efficient cleaning of the cleaning mechanism.

CN223300615UActive Publication Date: 2025-09-05GUANGDONG GAOPINJU CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Application Number
CN202423081773.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-09-05
Estimated Expiration
2034-12-13

AI Technical Summary

Technical Problem

Existing pipe cleaning devices are difficult to pass smoothly when facing different directions and degrees of bending, resulting in low cleaning efficiency.

Method used

A pipe anti-blocking cleaning auxiliary formation bracket assembly is designed, including an auxiliary bracket. The auxiliary bracket is composed of multiple unit brackets. Through the combination of telescopic arm, angle rotating seat and connecting frame, the cleaning mechanism is achieved smoothly and smoothly in the bend pipe.

Benefits of technology

It improves the adaptability and flexibility of the cleaning mechanism, can smoothly and smoothly enter different bending degrees and orientations at various pipe connections, and improves cleaning efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model is suitable for the field of pipeline anti-blocking, and provides a pipeline anti-blocking cleaning auxiliary forming support assembly which comprises an auxiliary support which comprises a plurality of unit supports. The unit bracket comprises an angle rotating seat, an angle rotating seat, a connecting frame and a telescopic arm; one end of the angle rotating seat is fixed on the angle rotating seat and is used for driving the angle rotating seat to rotate; one end, far away from the angle rotating seat, of the angle rotating seat is rotationally assembled on the connecting frame and is used for driving the connecting frame to rotate for turning; the end, away from the angle rotating base, of the connecting frame is fixed to the telescopic arm. The telescopic arm is used for adjusting unit bracket length; the cleaning mechanism can stably and smoothly enter connecting bent pipes with different bending degrees and different bending directions at the joints of various pipelines, the adaptability of the cleaning mechanism is improved, the flexibility of coping with various connecting bent pipes is improved, and the cleaning efficiency is substantially improved.
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Description

Technical Field

[0001] The utility model relates to the field of pipeline anti-blocking, in particular to a pipeline anti-blocking cleaning auxiliary forming bracket component. Background Art

[0002] A pipeline is a device connected by pipes, fittings, and valves for transporting gases, liquids, or fluids containing solid particles. Typically, fluids are pressurized by blowers, compressors, pumps, and boilers, flowing from high-pressure areas to low-pressure areas within the pipeline. Alternatively, the fluid's own pressure or gravity can be used for transport. Pipelines have a wide range of uses, primarily in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations.

[0003] Since pipelines may become dirty or accumulate a certain amount of material during actual use, they need to be cleaned regularly. However, in actual pipe network connections, pipelines may bend to varying degrees and in different directions when changing their laying direction. In order to deal with this situation, a smooth-passing anti-blocking cleaning device is required. However, many anti-blocking cleaning devices in the prior art can only move and clean in a straight line. For example, a pipeline cleaning device in the prior art (Chinese patent, authorization announcement number CN117086037B) has a "fixing mechanism" and a "cleaning mechanism" connected only by a "telescopic shaft", and the telescopic shaft is connected to a first drive unit, which is configured to drive the telescopic shaft to telescopically move along its own axial direction and rotate around its own axis. Obviously, it cannot smoothly pass through bending of varying degrees in different directions.

[0004] Therefore, a pipeline anti-blocking and cleaning auxiliary bracket assembly is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the embodiment of the present utility model is to provide a pipeline anti-blocking cleaning auxiliary bracket assembly, which is intended to solve the problem that in actual pipe network connections, the pipe will bend to varying degrees and in different directions when it changes its laying direction. In the face of this situation, a smooth-passing anti-blocking cleaning device is needed, but many anti-blocking cleaning devices in the existing technology can only move and clean in a straight line.

[0006] Specific technical solution: The pipeline anti-blocking cleaning auxiliary bracket assembly includes an auxiliary bracket, which is used to be installed between the fixing mechanism and the cleaning mechanism; the auxiliary bracket includes a plurality of unit brackets, and the plurality of unit brackets are detachably connected head to tail in sequence; the unit bracket includes an angle rotating seat, an angle rotating seat, a connecting frame and a telescopic arm; one end of the angle rotating seat is detachably mounted on the telescopic arm on another adjacent unit bracket, and the other end is fixed on the angle rotating seat, and is used to drive the angle rotating seat to rotate; the angle rotating seat is rotatably assembled on the connecting frame at the end away from the angle rotating seat, and is used to drive the connecting frame to rotate and turn; the connecting frame is fixed to the telescopic arm at one end away from the angle rotating seat; the telescopic arm is detachably mounted on the angle rotating seat on another adjacent unit bracket at one end away from the connecting frame, and is used to adjust Unit bracket length; after the fixing mechanism is fixed at one place in the pipeline, the auxiliary bracket is used to drive the cleaning mechanism to clean the pipeline; during the driving process, the auxiliary bracket will adjust the cleaning forward position of the cleaning mechanism through the extension and retraction of the telescopic arm, and the turning by the angle rotating seat and the connecting frame to complete the adjustment of the cleaning mechanism to smoothly enter the elbow, and then use the angle rotating seat to rotate to adjust the cleaning mechanism to smoothly enter the elbows in different directions; that is, the extension and retraction of the telescopic arm, the turning of the combined angle rotating seat and the connecting frame, and the rotation of the combined angle rotating seat to enter the elbows in different directions, so that the cleaning mechanism can smoothly enter various pipe connections with different degrees of curvature and connecting elbows with different directions, improve the adaptability of the cleaning mechanism, and improve the flexibility of dealing with various connecting elbows, thereby substantially improving the cleaning efficiency.

[0007] In one of the detailed technical solutions, please refer to Figures and Figures: The telescopic arm includes:

[0008] A hydraulic telescopic rod, wherein an end of the hydraulic telescopic rod is fixed to the connecting frame;

[0009] A fixed plate, one side of which is fixed to the end of the other end of the hydraulic telescopic rod; the other side of which is detachably mounted on an angle rotating seat on another adjacent unit bracket.

[0010] Furthermore, the angle rotating seat includes:

[0011] Removable connecting mechanism;

[0012] Drive motor 1, the drive motor 1 is fixed on the detachable connecting mechanism, the detachable connecting mechanism is fixed on the fixed plate of the telescopic arm on another adjacent unit bracket on the side away from the drive motor 1; a rotating column is fixed on the output shaft of the drive motor 1, and the rotating column is fixed on the angle rotating seat.

[0013] Furthermore, the detachable connection mechanism includes:

[0014] A connecting plate 1, wherein the connecting plate 1 is used to be fixed to a fixing plate of a telescopic arm on another adjacent unit bracket;

[0015] A second connecting plate, one side of which is attached to the first connecting plate and the other side of which is fixed to the first driving motor;

[0016] A plurality of fastening bolts are arranged in an array on the second connecting plate and are used for detachably installing the first connecting plate and the second connecting plate.

[0017] In one of the detailed technical solutions, the angle rotating seat includes:

[0018] A support platform, one end of which is fixed on the angle rotating seat;

[0019] A rotating notch is provided at the end of the other end of the support platform, and the support platforms on both sides of the rotating notch are in an arc shape;

[0020] A driving groove is provided at the bottom of the rotating groove.

[0021] Furthermore, the angle rotating seat also includes a second drive motor, which is inserted into the support platform. The second drive motor has a rotating shaft fixed on its output shaft, and a driving gear is fixed at the end of the rotating shaft. The driving gear is located inside the driving slot and rotates inside the driving slot; the driving slot power transmission is connected to the connecting frame.

[0022] Furthermore, the connecting frame includes:

[0023] A positioning post, the positioning post being rotatably assembled inside the driving groove;

[0024] The rotating disk is fixed on the positioning column, and the rotating disk and the positioning column are located on the same longitudinal center line; one side of the rotating disk is movable and rotated and inserted into the driving groove.

[0025] The connecting frame further comprises:

[0026] A connecting plate, one end of which is fixed to the rotating disk, and the other end of which is fixed to the telescopic arm;

[0027] A rack is placed on the side of the rotary disk that is inside the drive groove.

[0028] The racks are distributed over half the circumference of the side wall.

[0029] Therefore, start the second drive motor, use the second drive motor to drive the drive gear to rotate, the gear transmits power to the rack, so that the connecting frame rotates on the angle rotating seat, and the angle rotating seat and the connecting frame cooperate to make the turning so that the cleaning mechanism can be adjusted to enter the curved pipe smoothly, and then the angle rotating seat is used to rotate so that the cleaning mechanism can be adjusted to enter the curved pipe in different directions smoothly.

[0030] Compared with the prior art, the utility model provides a pipeline anti-blocking cleaning auxiliary bracket assembly. After the fixing mechanism is fixed at one place in the pipeline, the auxiliary bracket is used to drive the cleaning mechanism to clean the pipeline. During the driving process, the auxiliary bracket will adjust the cleaning forward position of the cleaning mechanism through the extension and retraction of the telescopic arm, and complete the adjustment of the cleaning mechanism to smoothly enter the curved pipe through the cooperation of the angle rotating seat and the connecting frame to turn, and then use the angle rotating seat to rotate to adjust the cleaning mechanism to smoothly enter the curved pipes in different directions. That is, the extension and retraction of the telescopic arm, the combined turning of the angle rotating seat and the connecting frame, and the rotation of the combined angle rotating seat to enter the curved pipes in different directions, realize the smooth and smooth entry of the cleaning mechanism into various pipeline connections with different degrees of curvature and connected curved pipes in different directions, improve the adaptability of the cleaning mechanism, and improve the flexibility in dealing with various connected curved pipes, thereby substantially improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the structure of the auxiliary support assembly for preventing and cleaning pipelines according to the present invention;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the mid-unit bracket;

[0034] Figure 3 for Figure 2 Schematic diagram of the structure of the middle telescopic arm;

[0035] Figure 4 for Figure 2 Structural diagram of the middle connecting frame;

[0036] Figure 5 for Figure 2 Schematic diagram of the structure of the medium-angle rotating seat;

[0037] Figure 6 for Figure 2 Schematic diagram of the structure of the medium-angle rotating seat.

[0038] The codes in the accompanying drawings are:

[0039] Auxiliary bracket 100; unit bracket 200;

[0040] Angle rotating seat 210, angle rotating seat 220, connecting frame 230, telescopic arm 240; connecting plate 1 2101, fastening bolt 2102, connecting plate 2103, drive motor 1 2104, rotating column 2105; drive motor 2 2201, support platform 2202, rotating slot 2203, drive slot 2204; connecting plate 2301, rotating disk 2302, positioning column 2303, rack 2304; fixed disk 2401. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. The specific implementation of the present invention is described in detail below with reference to the specific embodiments.

[0042] In this utility model embodiment, please refer to Figure 1 and Figure 2 : A pipe anti-blocking cleaning auxiliary bracket assembly includes an auxiliary bracket 100, which is used to be installed between the fixing mechanism and the cleaning mechanism;

[0043] It should be noted that the fixing mechanism and the cleaning mechanism are both prior art, and their detailed structures can be found in existing literature and journals. They can also be purchased directly on the market, or components purchased on the market can be assembled, etc. They are not protected by the present invention and will not be described in detail here, nor are they drawn in the accompanying drawings.

[0044] The auxiliary bracket 100 includes a plurality of unit brackets 200, which are detachably connected end to end. The unit bracket 200 includes an angle rotating base 210, an angle rotating base 220, a connecting frame 230 and a telescopic arm 240.

[0045] One end of the angle rotating base 210 is detachably mounted on the telescopic arm 240 on another adjacent unit bracket 200, and the other end is fixed on the angle rotating base 220 and is used to drive the angle rotating base 220 to rotate;

[0046] The angle rotating seat 220 is rotatably assembled on the connecting frame 230 at one end away from the angle rotating seat 210, and is used to drive the connecting frame 230 to rotate and turn;

[0047] The connecting frame 230 is fixed to the telescopic arm 240 at one end away from the angle rotating base 220;

[0048] The telescopic arm 240 is detachably mounted on the angle rotating seat 210 on another adjacent unit bracket 200 at one end away from the connecting frame 230, so as to adjust the length of the unit bracket 200;

[0049] Therefore, in actual pipe network connections, when the pipe changes its laying direction, it will bend to varying degrees and in different directions. In the face of this situation, a blocking prevention and cleaning device that can pass smoothly is needed. However, many blocking prevention and cleaning devices in the prior art can only move and clean in a straight line. The present application can achieve the following:

[0050] After the fixing mechanism is fixed to one place in the pipeline, the auxiliary bracket 100 is used to drive the cleaning mechanism to clean the pipeline; during the driving process, the auxiliary bracket 100 will adjust the cleaning forward position of the cleaning mechanism through the extension and retraction of the telescopic arm 240, and the turning by the angle rotating seat 220 and the connecting frame 230 to complete the adjustment of the cleaning mechanism to smoothly enter the bend, and then use the angle rotating seat 210 to rotate to adjust the cleaning mechanism to smoothly enter the bends in different directions; that is, the extension and retraction of the telescopic arm 240, the combined turning of the angle rotating seat 220 and the connecting frame 230, and the rotation of the angle rotating seat 210 to enter the bends in different directions, realize the cleaning mechanism to smoothly enter various pipeline connections with different degrees of curvature and connected bends in different directions, improve the adaptability of the cleaning mechanism, and improve the flexibility of dealing with various connected bends, thereby substantially improving the cleaning efficiency.

[0051] In this utility model embodiment, please refer to Figure 2 and Figure 3 : The telescopic arm 240 includes:

[0052] A hydraulic telescopic rod, one end of which is fixed to the connecting frame 230;

[0053] A fixed plate 2401 , one side of which is fixed to the end of the other end of the hydraulic telescopic rod; the other side of the fixed plate 2401 is detachably mounted on the angle rotating seat 210 on another adjacent unit bracket 200 .

[0054] Therefore, during the driving process, the auxiliary bracket 100 adjusts the cleaning forward position of the cleaning mechanism by extending and retracting the telescopic arm 240, which is achieved by extending and retracting the hydraulic telescopic rod. At the same time, the hydraulic telescopic rod can be replaced by a pneumatic telescopic rod, or an electric telescopic rod, etc. There is no restriction on the specific structure, as long as it can meet the requirement of adjusting the cleaning forward position of the cleaning mechanism by extending and retracting the telescopic arm 240.

[0055] For further information, see Figure 2 and Figure 6 : The angle rotating seat 210 includes:

[0056] Removable connecting mechanism;

[0057] Drive motor 1 2104, the drive motor 1 2104 is fixed on the detachable connecting mechanism, and the detachable connecting mechanism is fixed on the fixed plate 2401 of the telescopic arm 240 on another adjacent unit bracket 200 on the side away from the drive motor 1 2104; a rotating column 2105 is fixed on the output shaft of the drive motor 1 2104, and the rotating column 2105 is fixed on the angle rotating seat 220.

[0058] It should be noted here that the drive motor 2104 and the power wiring method of the drive motor 2104 belong to the existing technology, and its detailed structure can be found in existing literature journals. It can also be purchased directly on the market, or parts can be purchased on the market to assemble it, etc.; it is not what the present invention wants to protect and will not be elaborated here.

[0059] Therefore, by starting the drive motor 2104, the drive motor 2104 is used to drive the angle rotating seat 220, the connecting frame 230 and the telescopic arm 240 to rotate synchronously, and the angle rotating seat 210 is rotated to adjust the cleaning mechanism to smoothly enter the curved pipes in different directions.

[0060] For further information, see Figure 6 : The detachable connection mechanism includes:

[0061] A connecting plate 2101, wherein the connecting plate 2101 is used to be fixed to the fixing plate 2401 of the telescopic arm 240 on another adjacent unit bracket 200;

[0062] Connecting plate 2103, one side of which is attached to connecting plate 1 2101 and the other side of which is fixed to driving motor 1 2104;

[0063] A plurality of fastening bolts 2102 are distributed in an array on the second connecting plate 2103 and are used to detachably install the first connecting plate 2101 and the second connecting plate 2103.

[0064] In this utility model embodiment, please refer to Figure 2 and Figure 5 : The angle rotating seat 220 includes:

[0065] A support platform 2202, one end of which is fixed to the angle rotating seat 210 (specifically, one end of the support platform 2202 is fixed to the rotating column 2105);

[0066] A rotation slot 2203 is provided at the end of the other end of the support platform 2202, and the support platforms 2202 on both sides of the rotation slot 2203 are in an arc shape;

[0067] The driving groove 2204 is opened at the bottom of the rotating groove 2203.

[0068] For further information, see Figure 2 and Figure 5 : The angle rotating seat 220 also includes a second drive motor 2201, which is inserted into the support platform 2202. The second drive motor 2201 has a rotating shaft fixed on its output shaft, and a driving gear is fixed at the end of the rotating shaft. The driving gear is located inside the driving slot 2204 and rotates inside the driving slot 2204; the driving slot 2204 is power-transmitted and connected to the connecting frame 230.

[0069] It should be noted here that the drive motor 2201 and the power wiring method of the drive motor 2201 belong to the existing technology. Its detailed structure can be found in existing literature journals, and it can also be purchased directly on the market, or parts can be purchased on the market to assemble it, etc.; it is not what the present invention wants to protect and will not be elaborated here.

[0070] For further information, see Figure 2 、 Figure 4 and Figure 5 : The connecting frame 230 includes:

[0071] A positioning post 2303 rotatably assembled in the driving slot 2204 ;

[0072] The rotating disk 2302 is fixed on the positioning column 2303 , and the rotating disk 2302 and the positioning column 2303 are located on the same longitudinal center line; one side of the rotating disk 2302 is movable and rotatable and inserted into the driving slot 2204 .

[0073] See also Figure 2 、 Figure 4 and Figure 5 : The connecting frame 230 also includes:

[0074] A connecting plate 2301 , one end of which is fixed to the rotating disk 2302 , and the other end of which is fixed to the telescopic arm 240 ;

[0075] The rack 2304 is arranged on one side of the rotating disk 2302 inside the driving groove 2204 .

[0076] See also Figure 4 and Figure 5: The rack 2304 is distributed on half the circumference of the side wall.

[0077] Therefore, start the drive motor 2201, use the drive motor 2201 to drive the drive gear to rotate, the gear transmits power to the rack 2304, so that the connecting frame 230 rotates on the angle rotating seat 220, and completes the turning by cooperating with the angle rotating seat 220 and the connecting frame 230 to complete the adjustment of the cleaning mechanism to smoothly enter the curved pipe, and then use the angle rotating seat 210 to rotate to achieve the adjustment of the cleaning mechanism to smoothly enter the curved pipe in different directions.

[0078] In the description of the present invention, although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe anti-blocking cleaning auxiliary bracket assembly, comprising an auxiliary bracket (100), wherein the auxiliary bracket (100) is used to be installed between a fixing mechanism and a cleaning mechanism; characterized in that: The auxiliary bracket (100) comprises a plurality of unit brackets (200), and the plurality of unit brackets (200) are detachably connected end to end; the unit bracket (200) comprises an angle rotating seat (210), an angle rotating seat (220), a connecting frame (230) and a telescopic arm (240); One end of the angle rotating seat (210) is detachably mounted on a telescopic arm (240) on another adjacent unit bracket (200), and the other end is fixed on the angle rotating seat (220) and is used to drive the angle rotating seat (220) to rotate; The angle rotation seat (220) is rotatably assembled on the connecting frame (230) at one end away from the angle rotation seat (210), and is used to drive the connecting frame (230) to rotate and turn; The connecting frame (230) is fixed to the telescopic arm (240) at one end away from the angular rotation seat (220); The telescopic arm (240) is detachably mounted on an angle rotating seat (210) on another adjacent unit bracket (200) at one end away from the connecting frame (230) for adjusting the length of the unit bracket (200).

2. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 1 is characterized in that: The telescopic arm (240) comprises: A hydraulic telescopic rod, wherein the end of one end of the hydraulic telescopic rod is fixed to the connecting frame (230); A fixed plate (2401), one side of the fixed plate (2401) is fixed to the end of the other end of the hydraulic telescopic rod; the other side of the fixed plate (2401) is detachably mounted on an angle rotating seat (210) on another adjacent unit bracket (200).

3. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 2, characterized in that: The angle rotating seat (210) comprises: Removable connecting mechanism; A driving motor (2104) is fixed to the detachable connecting mechanism, and the detachable connecting mechanism is fixed to a fixed plate (2401) of a telescopic arm (240) on another adjacent unit bracket (200) on a side away from the driving motor (2104); a rotating column (2105) is fixed to the output shaft of the driving motor (2104), and the rotating column (2105) is fixed to the angle rotating seat (220).

4. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 3 is characterized in that: The detachable connection mechanism comprises: A connecting plate (2101) is used to be fixed to a fixing plate (2401) of a telescopic arm (240) on another adjacent unit bracket (200); Connecting plate 2 (2103), one side of connecting plate 2 (2103) is attached to connecting plate 1 (2101), and the other side is fixed to driving motor 1 (2104); A plurality of fastening bolts (2102) are arranged in an array on the second connecting plate (2103) and are used for detachably mounting the first connecting plate (2101) and the second connecting plate (2103).

5. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 1, characterized in that: The angle rotating seat (220) comprises: A support platform (2202), one end of which is fixed on the angle rotating seat (210); A rotating notch (2203), wherein the rotating notch (2203) is provided at the end of the other end of the support platform (2202), and the support platforms (2202) on both sides of the rotating notch (2203) are in an arc shape; A driving groove (2204) is provided at the bottom of the rotating groove (2203).

6. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 5, characterized in that: The angle rotating seat (220) further comprises a second driving motor (2201), which is interspersed and arranged on the support platform (2202). A rotating shaft is fixed on the output shaft of the second driving motor (2201), and a driving gear is fixed at the end of the rotating shaft. The driving gear is located inside the driving slot (2204) and rotates inside the driving slot (2204); the driving slot (2204) is connected to the connecting frame (230) through power transmission.

7. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 6, characterized in that: The connecting frame (230) comprises: A positioning post (2303), the positioning post (2303) is rotatably assembled inside the driving slot (2204); The rotating disk (2302) is fixed on the positioning column (2303), and the rotating disk (2302) and the positioning column (2303) are located on the same longitudinal center line; one side of the rotating disk (2302) is movable and rotatable and inserted into the driving groove (2204).

8. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 7, characterized in that: The connecting frame (230) further includes: A connecting plate (2301), one end of the connecting plate (2301) is fixed to the rotating disk (2302), and the other end is fixed to the telescopic arm (240); A rack (2304) is provided on one side of the rotating disk (2302) inside the driving slot (2204).

9. The pipeline anti-blocking and cleaning auxiliary forming bracket assembly according to claim 8, characterized in that: The racks (2304) are distributed over half the circumference of the side wall.

Citation Information

Patent Citations

  • Pipe cleaning device

    CN117086037B