A concrete pipe defect detection device and detection method

By designing a concrete pipe defect detection device that combines a ring guide rail, a lifting plate, and an industrial camera, the device automatically marks the defect location and issues an audible alert, solving the problem of unmarked defects in existing technologies and improving detection and repair efficiency.

CN122487403APending Publication Date: 2026-07-31CHENGDE LIANLI CEMENT PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDE LIANLI CEMENT PROD CO LTD
Filing Date
2026-06-17
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The failure to effectively mark the location of defects after inspection of existing concrete pipes has led to low efficiency in on-site repairs.

Method used

A concrete pipe defect detection device was designed, which combines a ring guide rail, a lifting plate and an industrial camera. When a defect is detected, it is automatically marked by a marking unit. A guide mark is formed at the defect using an arc plate and abutting pipe, and a sound is emitted by a striking ball to remind the staff.

Benefits of technology

It enables rapid and accurate marking of defect locations on the surface of concrete pipes, improving the overall efficiency of detection and repair.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a concrete pipe defect detection device and method, relating to the field of concrete pipe detection technology. It includes a ring guide rail, an electric slider slidably connected to the outer side of the ring guide rail, a support block fixedly connected to the upper side of the electric slider, a vertical plate fixedly connected to the upper side of the support block, a lifting groove formed on the outer side of the vertical plate, a lifting block slidably connected to the inner side of the lifting groove, a lifting plate fixedly connected to the right side of the lifting block, a marking unit provided on the outer side of the lifting plate, and an industrial camera fixedly connected to the upper side of the lifting plate. This concrete pipe defect detection device, with its vertical plate, lifting plate, and industrial camera, facilitates the detection of defects on the surface of the concrete pipe by the industrial camera. It also controls an electric push rod to move a marking box into contact with the concrete pipe surface, and a discharge pipe discharges paint onto the concrete surface, facilitating rapid marking of surface defects.
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Description

Technical Field

[0001] This invention relates to the field of concrete pipe testing technology, specifically to a concrete pipe defect detection device and method. Background Technology

[0002] A concrete pipe is a cylindrical precast concrete component made primarily of cement, aggregates (sand, gravel), and water through a specific molding process. Its main functions are as underground passages for transporting fluids (such as water and sewage), draining rainwater, or as conduits for laying cables and fiber optic cables.

[0003] A search revealed Chinese patent application number "CN202310854486.4", which specifically describes a device and method for detecting void defects in steel-concrete composite columns. The device includes a track mechanism, a walking mechanism, a lifting mechanism, a striking mechanism, a sound receiver, and a control mechanism. The bottom end of the walking mechanism is slidably mounted on the track mechanism, and the walking mechanism is used to move around the steel-concrete composite column. One end of the lifting mechanism is mounted on the upper surface of the walking mechanism, and the other end is connected to the striking mechanism. The striking mechanism is used to strike the surface of the steel-concrete composite column. The sound receiver is used to receive the striking sound signal data and is connected to the striking mechanism. The control mechanism controls the operation of the walking mechanism, the lifting mechanism, the striking mechanism, and the sound receiver, and processes and judges the striking sound signal data received by the sound receiver.

[0004] After the existing concrete pipes are demolded and dried, surface defects are inspected to ensure quality. A circular guide rail controls the movement of the inspection instrument around the pipe, while the device analyzes the data in the background, generating a defect report containing coordinates or grid numbers. However, after receiving the report, on-site maintenance personnel still need to painstakingly locate the corresponding defect points on the massive structure using drawings or coordinates. This process is time-consuming, error-prone, and severely reduces the overall efficiency from inspection to repair. Furthermore, the existing inspection device cannot mark defect locations, hindering concrete pipe repair.

[0005] Therefore, this invention proposes a concrete pipe defect detection device and detection method to solve the aforementioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a concrete pipe defect detection device and method, which solves the problem of not marking surface defects of concrete pipes after inspection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A concrete pipe defect detection device includes an annular guide rail. An electric slider is slidably connected to the outer side of the annular guide rail. A support block is fixedly connected to the upper side of the electric slider. A vertical plate is fixedly connected to the upper side of the support block. A lifting groove is formed on the outer side of the vertical plate. A lifting block is slidably connected to the inner side of the lifting groove. A lifting plate is fixedly connected to the right side of the lifting block. A marking unit is provided on the outer side of the lifting plate. An industrial camera is fixedly connected to the upper side of the lifting plate. The marking unit includes a sliding groove, which is formed on the front and rear sides of the lifting plate. A moving block is slidably connected to the inner side of the sliding groove. A moving plate is fixedly connected to the outer side of the moving block. A fixed plate is fixedly connected to the right side of the moving plate. A sliding rod is provided on the outer side of the fixed plate. An arc-shaped plate is fixedly connected to the right end of the sliding rod. Marking boxes are fixedly connected to both the upper and lower sides of the arc-shaped plate.

[0008] Preferably, a top plate is fixedly connected to the upper side of the upright plate, and an electric push rod is fixedly connected to the upper side of the top plate. The output end of the electric push rod is fixedly connected to the lifting plate, and the marking box is configured with an arc-shaped structure.

[0009] Preferably, a side plate is fixedly connected to the outer side of the movable plate, a control plate is fixedly connected to the left side of the side plate, an electric push rod is fixedly connected between the control plate and the lifting block, multiple discharge pipes are fixedly connected to the middle of the upper and lower marking boxes, an arc-shaped pipe is fixedly connected to the left end of the discharge pipe, a connecting pipe is fixedly connected between the upper and lower arc-shaped pipes, a paint tank is fixedly connected to the lower side of the lifting plate, a pump body is fixedly connected to the right side of the paint tank, an output pipe is fixedly connected between the pump body and the connecting pipe, the slide rod is slidably connected to the fixed plate, and a spring is fixedly connected between the arc-shaped plate and the fixed plate.

[0010] Preferably, the outer side of the arc-shaped plate has two arc-shaped guide grooves, the inner side of the arc-shaped guide grooves is slidably connected to an arc-shaped block, the right side of the arc-shaped block is fixedly connected to an installation plate, the outer side of the installation plate is provided with two abutment pipes, the two abutment pipes are fixedly connected to a connecting pipe, and the connecting pipe and the connecting pipe are fixedly connected to a branch pipe.

[0011] Preferably, the abutment tube is slidably connected to the arc-shaped block, a side plate is fixedly connected to the left end of the abutment tube, a second spring is fixedly connected between the side plate and the arc-shaped block, a U-shaped plate is fixedly connected to the left side of the arc-shaped block, a rotating rod is rotatably connected to the inner side of the U-shaped plate, a gear is fixedly connected to the outer side of the rotating rod, and an arc-shaped toothed plate that meshes with the gear is fixedly connected to the outer side of the arc-shaped plate.

[0012] Preferably, a fixed cylinder and a storage box are fixedly connected to the upper side of the U-shaped plate, and multiple fan blades are fixedly connected to the upper end of the rotating rod and inside the fixed cylinder. The fixed cylinder is connected to the storage box, an air box is fixedly connected to the front side of the moving plate, a piston disc is provided inside the air box, the piston disc is fixedly connected to the slide rod, and a conveying pipe is fixedly connected between the air box and the fixed cylinder.

[0013] Preferably, two mounting blocks are fixedly connected to the left side of the lifting block, and a control rod is rotatably connected between the two mounting blocks. Turntables are fixedly connected to both ends of the control rod. Multiple connecting ropes are fixedly connected to the outer side of the turntables, and impact balls are fixedly connected to the outer ends of the connecting ropes. A response plate is fixedly connected to the outer side of the mounting block. A second gear is fixedly connected to the middle of the control rod. A connecting block is fixedly connected to the upper side of the control plate, and a mounting toothed plate that meshes with the second gear is fixedly connected to the upper side of the connecting block.

[0014] A method for detecting defects in concrete pipes, comprising the following steps: S1. Place the concrete pipe in the middle of the circular guide rail in the inspection area, then control the electric slider to rotate the industrial camera, and control the electric push rod to move the industrial camera up and down. The industrial camera will inspect the defects on the surface of the concrete pipe. S2. During the inspection process, when the industrial camera detects a defect, the electric push rod 2 drives the marking box to contact the concrete pipe. Then the pump body starts, causing the discharge pipe to discharge paint around the defect in the concrete pipe. Continue to control the movement of the marking box, causing the abutment pipe to rotate and discharge paint. The abutment pipe moves to the defect, forming a clear trajectory guide. S3. As the curved plate moves, multiple impact balls repeatedly strike the response plate, producing a sound to alert the staff. The staff then mark the defects in the concrete pipe according to the markings mentioned above.

[0015] This invention provides a device and method for detecting defects in concrete pipes. Compared with the prior art, it has the following advantages: (1) The concrete pipe defect detection device is equipped with a vertical plate, a lifting plate and an industrial camera, which facilitates the industrial camera to detect defects on the surface of the concrete pipe. The device also controls the electric push rod 2 to drive the marking box to contact the surface of the concrete pipe, and discharges paint from the discharge pipe onto the concrete surface, which facilitates the quick marking of defects on the concrete surface.

[0016] (2) The concrete pipe defect detection device is equipped with an arc-shaped guide groove, an arc-shaped block, an installation plate, and a guide tube. When the marking box comes into contact with the concrete pipe, the guide tube rotates and discharges paint. When the guide tube moves to the defect, it stops moving, so that a guide mark is formed at the defect, thereby further improving the defect marking effect.

[0017] (3) The concrete pipe defect detection device is equipped with a control plate, turntable, connecting rope and impact ball. When marking, the impact ball repeatedly hits the response plate to produce sound, which can remind the staff. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the marking box in this invention; Figure 4 This is a three-dimensional structural view of the marking box in this invention from another perspective; Figure 5 This is a three-dimensional structural diagram of the paint box in this invention. Figure 6 This is a three-dimensional structural diagram of the arc-shaped plate in this invention; Figure 7 for Figure 5 Enlarged view of point A in the middle; Figure 8 This is a partial three-dimensional structural diagram of the marking unit in this invention; Figure 9 for Figure 7 Enlarged view of point B in the middle; Figure 10 This is a three-dimensional structural diagram of the neutral plate in this invention; Figure 11 for Figure 9 A magnified view of point C in the middle.

[0019] In the diagram: 1. Circular guide rail; 2. Electric slider; 3. Support block; 4. Vertical plate; 5. Lifting groove; 6. Lifting block; 7. Lifting plate; 8. Marking unit; 9. Industrial camera; 10. Top plate; 11. Electric push rod one; 81. Slide groove; 82. Moving block; 83. Moving plate; 84. Side plate; 85. Control board; 86. Electric push rod two; 88. Fixed plate; 89. Slide rod; 810. Arc plate; 811. Spring one; 812. Marking box; 813. Arc guide groove; 814. Discharge pipe; 815. Arc pipe; 816. Connecting pipe; 817. Arc block; 818. Mounting plate; 819. 820. Connecting pipe; 821. Side plate; 822. Spring 2; 823. Branch pipe; 824. U-shaped plate; 825. Rotating rod; 826. Gear 1; 827. Arc-shaped toothed plate; 828. Fan blade; 829. Fixed cylinder; 830. Storage box; 831. Delivery pipe; 832. Air box; 833. Piston disc; 834. Mounting block; 835. Response plate; 836. Control lever; 837. Turntable; 838. Connecting rope; 839. Impact ball; 840. Gear 2; 841. Mounting toothed plate; 842. Connecting block; 843. Paint tank; 844. Pump body; 845. Output pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides the following technical solutions: Example 1 Please see Figure 1 - Figure 9A concrete pipe defect detection device includes an annular guide rail 1. An electric slider 2 is slidably connected to the outer side of the annular guide rail 1. A support block 3 is fixedly connected to the upper side of the electric slider 2. A vertical plate 4 is fixedly connected to the upper side of the support block 3. A lifting groove 5 is opened on the outer side of the vertical plate 4. A lifting block 6 is slidably connected to the inner side of the lifting groove 5. A lifting plate 7 is fixedly connected to the right side of the lifting block 6. A marking unit 8 is provided on the outer side of the lifting plate 7. An industrial camera 9 is fixedly connected to the upper side of the lifting plate 7. The marking unit 8 includes a sliding groove 81, which is opened on the front and rear sides of the lifting plate 7. A moving block 82 is slidably connected to the inner side of the sliding groove 81. A moving plate 83 is fixedly connected to the outer side of the moving block 82. A fixed plate 88 is fixedly connected to the right side of the moving plate 83. A sliding rod is provided on the outer side of the fixed plate 88. 89. An arc-shaped plate 810 is fixedly connected to the right end of the sliding rod 89. Marking boxes 812 are fixedly connected to both the upper and lower sides of the arc-shaped plate 810. A top plate 10 is fixedly connected to the upper side of the upright plate 4. An electric push rod 11 is fixedly connected to the upper side of the top plate 10. The output end of the electric push rod 11 is fixedly connected to the lifting plate 7. The marking box 812 is set with an arc-shaped structure. When detecting defects on the surface of the concrete pipe, the concrete pipe is first placed in the middle of the circular guide rail 1. Then, the electric slider 2 is controlled to drive the upright plate 4 to rotate. The upright plate 4 drives the industrial camera 9 on the lifting plate 7 to rotate around the concrete pipe. The electric push rod 11 is controlled to drive the lifting plate 7 to move up and down. The lifting plate 7 drives the industrial camera 9 to move up and down, which facilitates the industrial camera 9 to detect defects on the surface of the concrete pipe.

[0022] A side plate 84 is fixedly connected to the outer side of the movable plate 83. A control plate 85 is fixedly connected to the left side of the side plate 84. An electric push rod 86 is fixedly connected between the control plate 85 and the lifting block 6. Multiple discharge pipes 814 are fixedly connected to the middle of the upper and lower marking boxes 812. An arc-shaped pipe 815 is fixedly connected to the left end of the discharge pipe 814. A connecting pipe 816 is fixedly connected between the upper and lower arc-shaped pipes 815. A paint tank 843 is fixedly connected to the lower side of the lifting plate 7. A pump body 844 is fixedly connected to the right side of the paint tank 843. An output pipe 845 is fixedly connected between the pump body 844 and the connecting pipe 816. A slide rod 89 is slidably connected to the fixed plate 88. A spring 811 is fixedly connected between the arc-shaped plate 810 and the fixed plate 88. During testing, when the work... When the camera 9 detects a defect, the control electric push rod 86 moves the control plate 85, which in turn moves the side plate 84, which in turn moves the moving plate 83, which in turn moves the fixed plate 88, which in turn moves the marking box 812 on the arc plate 810, bringing the marking box 812 into contact with the concrete pipe. At this time, the pump body 844 starts, and under the action of the output pipe 845, the connecting pipe 816, and the arc pipe 815, the paint in the paint box 843 is extracted. Multiple discharge pipes 814 spray paint onto the surface of the concrete pipe, forming two arc-shaped marks, which facilitates the later staff to quickly find the defect. The connecting pipe 816, the branch pipe 823, the output pipe 845, and the conveying pipe 831 are all made of flexible hose material.

[0023] Two arc-shaped guide grooves 813 are formed on the outer side of the arc-shaped plate 810. An arc-shaped block 817 is slidably connected to the inner side of the arc-shaped guide grooves 813. An mounting plate 818 is fixedly connected to the right side of the arc-shaped block 817. Two abutment tubes 819 are provided on the outer side of the mounting plate 818. A connecting pipe 820 is fixedly connected between the two abutment tubes 819. A branch pipe 823 is fixedly connected between the connecting pipe 816 and the connecting pipe 820. The abutment tube 819 is slidably connected to the arc-shaped block 817. A side plate 821 is fixedly connected to the left end of the abutment tube 819. A spring 822 is fixedly connected between the side plate 821 and the arc-shaped block 817. A U-shaped plate 824 is fixedly connected to the left side of the 7. A rotating rod 825 is rotatably connected to the inner side of the U-shaped plate 824. A gear 826 is fixedly connected to the outer side of the rotating rod 825. An arc-shaped toothed plate 827 that meshes with the gear 826 is fixedly connected to the outer side of the arc-shaped plate 810. A fixed cylinder 829 and a storage box 830 are fixedly connected to the upper side of the U-shaped plate 824. Multiple fan blades 828 are fixedly connected to the upper end of the rotating rod 825 and inside the fixed cylinder 829. The fixed cylinder 829 communicates with the storage box 830. An air box 832 is fixedly connected to the front side of the moving plate 83. A piston disc 8 is provided inside the air box 832. 33. Piston disc 833 is fixedly connected to slide rod 89. A conveying pipe 831 is fixedly connected between air box 832 and fixed cylinder 829. When marking box 812 contacts concrete pipe, the electric push rod 86 is controlled to move fixed plate 88, causing piston disc 833 to move. Piston disc 833 discharges gas from air box 832, and the gas is delivered to fixed cylinder 829. The gas drives fan blade 828 to rotate, fan blade 828 drives rotating rod 825 to rotate, rotating rod 825 drives gear 826 to rotate. Under the action of arc-shaped toothed plate 827, gear 826 rotates around arc-shaped toothed plate 827 in a U-shape. Under the action of plate 824, the U-shaped plate 824 drives the arc block 817 to rotate in an arc. The arc block 817 drives the abutment tube 819 to rotate. Under the action of spring 822, the abutment tube 819 is pressed tightly against the concrete pipe. When the abutment tube 819 rotates, under the action of branch pipe 823, the abutment tube 819 sprays paint onto the surface of the concrete pipe. The right end of the abutment tube 819 has a round hole to facilitate the discharge of paint and form an arc-shaped mark. When the abutment tube 819 moves to the defect (groove), the abutment tube 819 moves into the defect. At this time, the paint is stopped from being delivered, forming an arc-shaped guide mark, and the staff can quickly find the defect location.

[0024] Example 2 Based on Example 1, such as Figure 10 , Figure 11As shown, two mounting blocks 834 are fixedly connected to the left side of the lifting block 6. A control lever 836 is rotatably connected between the two mounting blocks 834. Turntables 837 are fixedly connected to both ends of the control lever 836. Multiple connecting ropes 838 are fixedly connected to the outer side of the turntables 837. Impact balls 839 are fixedly connected to the outer ends of the connecting ropes 838. A response plate 835 is fixedly connected to the outer side of the mounting block 834. A gear 840 is fixedly connected to the middle of the control lever 836. A connecting block 842 is fixedly connected to the upper side of the control plate 85. The upper side of 2 is fixedly connected to a mounting toothed plate 841 that meshes with gear 2 840. When the marking box 812 contacts the concrete pipe, the control plate 85 drives the mounting toothed plate 841 on the connecting block 842 to move. The mounting toothed plate 841 drives gear 2 840 to rotate. Gear 2 840 drives the control rod 836 to rotate. The control rod 836 drives the turntable 837 to rotate. The turntable 837 drives the impact ball 839 on the connecting rope 838 to rotate, so that the impact ball 839 repeatedly hits the response plate 835 to produce a sound, which is convenient for reminding the staff.

[0025] A method for detecting defects in concrete pipes, comprising the following steps: S1. Place the concrete pipe in the middle of the inspection area of ​​the circular guide rail 1, then control the electric slider 2 to control the industrial camera 9 to rotate, and control the electric push rod 11 to drive the industrial camera 9 to move up and down. The industrial camera 9 detects the defects on the surface of the concrete pipe. S2. During the inspection process, when the industrial camera 9 detects a defect, the electric push rod 86 drives the marking box 812 to contact the concrete pipe. Then the pump body 844 starts, causing the discharge pipe 814 to discharge paint around the defect in the concrete pipe. The marking box 812 continues to move, causing the abutment pipe 819 to rotate and discharge paint. The abutment pipe 819 moves to the defect, forming a clear trajectory guide. S3. As the curved plate 810 moves, multiple impact balls 839 repeatedly strike the response plate 835, producing a sound to alert the staff. The staff then mark the defects in the concrete pipe according to the aforementioned markings. Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete pipe defect detection device, comprising an annular guide rail (1), characterized in that: An electric slider (2) is slidably connected to the outer side of the annular guide rail (1). A support block (3) is fixedly connected to the upper side of the electric slider (2). A vertical plate (4) is fixedly connected to the upper side of the support block (3). A lifting groove (5) is provided on the outer side of the vertical plate (4). A lifting block (6) is slidably connected to the inner side of the lifting groove (5). A lifting plate (7) is fixedly connected to the right side of the lifting block (6). A marking unit (8) is provided on the outer side of the lifting plate (7). An industrial camera (9) is fixedly connected to the upper side of the lifting plate (7). The marking unit (8) is... Unit (8) includes a slide (81), which is opened on the front and rear sides of the lifting plate (7). A moving block (82) is slidably connected to the inner side of the slide (81), and a moving plate (83) is fixedly connected to the outer side of the moving block (82). A fixed plate (88) is fixedly connected to the right side of the moving plate (83). A slide rod (89) is provided on the outer side of the fixed plate (88). An arc plate (810) is fixedly connected to the right end of the slide rod (89). Marking boxes (812) are fixedly connected to both the upper and lower sides of the arc plate (810).

2. The concrete pipe defect detection device according to claim 1, characterized in that: The upper side of the upright plate (4) is fixedly connected to the top plate (10), and the upper side of the top plate (10) is fixedly connected to the electric push rod (11). The output end of the electric push rod (11) is fixedly connected to the lifting plate (7). The marking box (812) is set with an arc-shaped structure.

3. The concrete pipe defect detection device according to claim 2, characterized in that: A side plate (84) is fixedly connected to the outside of the movable plate (83). A control plate (85) is fixedly connected to the left side of the side plate (84). An electric push rod (86) is fixedly connected between the control plate (85) and the lifting block (6). Multiple discharge pipes (814) are fixedly connected to the middle of the upper and lower marking boxes (812). An arc-shaped pipe (815) is fixedly connected to the left end of the discharge pipe (814). A connecting pipe (816) is fixedly connected between the upper and lower arc-shaped pipes (815). A paint box (843) is fixedly connected to the lower side of the lifting plate (7). A pump body (844) is fixedly connected to the right side of the paint box (843). An output pipe (845) is fixedly connected between the pump body (844) and the connecting pipe (816). The slide rod (89) is slidably connected to the fixed plate (88). A spring (811) is fixedly connected between the arc-shaped plate (810) and the fixed plate (88).

4. The concrete pipe defect detection device according to claim 3, characterized in that: Two arc-shaped guide grooves (813) are provided on the outer side of the arc-shaped plate (810). An arc-shaped block (817) is slidably connected to the inner side of the arc-shaped guide groove (813). An installation plate (818) is fixedly connected to the right side of the arc-shaped block (817). Two abutment tubes (819) are provided on the outer side of the installation plate (818). A connecting pipe (820) is fixedly connected between the two abutment tubes (819). A branch pipe (823) is fixedly connected between the connecting pipe (816) and the connecting pipe (820).

5. A concrete pipe defect detection device according to claim 4, characterized in that: The abutment tube (819) is slidably connected to the arc block (817). A side plate (821) is fixedly connected to the left end of the abutment tube (819). A spring (822) is fixedly connected between the side plate (821) and the arc block (817). A U-shaped plate (824) is fixedly connected to the left side of the arc block (817). A rotating rod (825) is rotatably connected to the inner side of the U-shaped plate (824). A gear (826) is fixedly connected to the outer side of the rotating rod (825). An arc-shaped toothed plate (827) that meshes with the gear (826) is fixedly connected to the outer side of the arc plate (810).

6. A concrete pipe defect detection device according to claim 5, characterized in that: A fixed cylinder (829) and a storage box (830) are fixedly connected to the upper side of the U-shaped plate (824). Multiple fan blades (828) are fixedly connected to the upper end of the rotating rod (825) and inside the fixed cylinder (829). The fixed cylinder (829) is connected to the storage box (830). An air box (832) is fixedly connected to the front side of the moving plate (83). A piston disc (833) is provided inside the air box (832). The piston disc (833) is fixedly connected to the slide rod (89). A conveying pipe (831) is fixedly connected between the air box (832) and the fixed cylinder (829).

7. A concrete pipe defect detection device according to claim 6, characterized in that: Two mounting blocks (834) are fixedly connected to the left side of the lifting block (6). A control rod (836) is rotatably connected between the two mounting blocks (834). Turntables (837) are fixedly connected to both the front and rear ends of the control rod (836). Multiple connecting ropes (838) are fixedly connected to the outer side of the turntables (837). Impact balls (839) are fixedly connected to the outer ends of the connecting ropes (838). A response plate (835) is fixedly connected to the outer side of the mounting block (834). Gear II (840) is fixedly connected to the middle of the control rod (836). A connecting block (842) is fixedly connected to the upper side of the control plate (85). A mounting tooth plate (841) that meshes with gear II (840) is fixedly connected to the upper side of the connecting block (842).

8. A method for detecting defects in concrete pipes, comprising a concrete pipe defect detection device according to claim 7, characterized in that, Includes the following steps: S1. Place the concrete pipe in the middle of the ring guide rail (1) (detection area), then control the electric slider (2) to control the industrial camera (9) to rotate, and control the electric push rod (11) to drive the industrial camera (9) to move up and down. The industrial camera (9) detects the defects on the surface of the concrete pipe. S2. During the inspection process, when the industrial camera (9) detects a defect, the electric push rod (86) drives the marking box (812) to contact the concrete pipe. Then the pump body (844) starts, causing the discharge pipe (814) to discharge paint around the defect in the concrete pipe. Continue to control the marking box (812) to move, causing the abutment pipe (819) to rotate and discharge paint. The abutment pipe (819) moves to the defect, forming a clear trajectory guide. S3. When the arc plate (810) moves, multiple impact balls (839) repeatedly impact the response plate (835) to make a sound, reminding the staff to mark the defects in the concrete pipe according to the above markings.