Broken wire detection device for prestressed concrete cylinder pipe

Abstract

The invention belongs to the technical field of prestressed concrete cylinder pipe steel wire breakage detection, and particularly relates to a prestressed concrete cylinder pipe steel wire breakage detection device which comprises a machine body, self-adaptive walking mechanisms are arranged at the two ends of the machine body, the machine body moves in a concrete pipe through the self-adaptive walking mechanisms, and the machine body is rotationally sleeved with a sleeve in a limiting mode. The machine body is fixedly provided with a motor, an output shaft of the motor is fixedly connected with a gear, the gear is meshed with the annular fluted disc, the sleeve is fixedly provided with a lifting mechanism in the radial direction, and the side, away from the sleeve, of the lifting mechanism is fixedly provided with a self-adaptive mechanism; and a plurality of flaw detectors are fixedly mounted on one side, far away from the sleeve, of the self-adaptive mechanism. The device is suitable for concrete pipes of different specifications, the application range is expanded, and the problem that a detection device cannot smoothly pass through a variable-diameter section in a laid pipeline, and consequently detection is difficult is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of broken wire detection of prestressed steel cylinder concrete pipes, and in particular relates to a broken wire detection device for prestressed steel cylinder concrete pipes. Background Art

[0002] Prestressed steel cylinder concrete pipe is widely used in water conservancy, municipal administration, energy and other fields at home and abroad due to its unique structural characteristics and excellent performance. This kind of pipe combines the characteristics of concrete compression and corrosion resistance, steel wire tensile resistance, steel cylinder impermeability, cement mortar durability and other materials. It has the characteristics of large capacity, high bearing capacity, low cost, easy installation and maintenance, etc. Especially in large-scale water conservancy projects, PCCP pipes play a vital role.

[0003] Prestressed steel wire is the main load-bearing structure of PCCP pipeline. It is spirally wound on the concrete pipe core with a certain tensile stress, so that the pipe core produces uniform prestress to resist the tensile stress generated by internal pressure and external load. However, prestressed steel wire may be affected by various factors during production, transportation and winding, such as inherent quality defects such as slag inclusion and sand holes, as well as damage such as scratches. These defects may cause wire breakage after prestressing, thus affecting the overall mechanical properties and durability of the pipeline.

[0004] Wire breakage is one of the main reasons for the failure of PCCP pipelines, which may lead to serious accidents such as pipeline bursts, causing huge losses to people's lives and property. Therefore, regular or real-time inspection of prestressed steel wires and timely detection and treatment of abnormal conditions such as wire breakage are of great significance to ensure the safe operation of pipelines.

[0005] The currently authorized Chinese invention patent: Patent number CN110159870A is a prestressed steel cylinder concrete pipe wire broken wire detection trolley. The trolley can travel along the prestressed steel cylinder concrete pipe and detect the broken wire of the prestressed steel cylinder concrete pipe by using the far-field eddy current effect. It can be driven manually by the staff or automatically, and can adapt to various complex working environments. Although this method can greatly improve the work efficiency, when inspecting the inside of the pipeline after laying, if the inner diameter of a certain section of the pipeline suddenly becomes smaller, the wheelbase of the trolley cannot be adjusted adaptively, resulting in the inability to pass through. Manual adjustment is required, and the limited working space in the pipeline makes manual adjustment more difficult, time-consuming and labor-intensive. In addition, when inspecting some large concrete pipes, for example, when the concrete pipe is placed horizontally, close to the ground end and the opposite side end, a detection trolley is needed, which can not only detect the steel wire in the large-volume steel cylinder concrete pipe, save workload, and improve detection efficiency, but also enhance the comprehensiveness of scanning and improve the accuracy of detection. Summary of the invention

[0006] The purpose of the present invention is to provide a prestressed steel cylinder concrete pipe broken wire detection device to solve the problems existing in the above-mentioned prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides a prestressed steel cylinder concrete pipe broken wire detection device, comprising a fuselage, wherein adaptive walking mechanisms are arranged at both ends of the fuselage, and the fuselage moves in the concrete pipe through the adaptive walking mechanisms, a sleeve is provided on the fuselage for limiting rotation, and an annular gear disk is provided on the sleeve for coaxial fixing, a motor is fixedly installed on the fuselage, and a gear is fixedly connected to the output shaft of the motor, and the gear is meshed with the annular gear disk, a plurality of lifting mechanisms are fixedly installed on the sleeve in the radial direction, an adaptive mechanism is fixedly installed on the side of the lifting mechanism away from the sleeve, and a plurality of flaw detectors are fixedly installed on the side of the adaptive mechanism away from the sleeve.

[0008] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0009] Preferably, the running wheels are electric wheels.

[0010] Preferably, the adaptive mechanism includes a base fixedly mounted on a side of the lifting mechanism away from the sleeve, a plurality of guide columns are vertically fixedly connected to the side of the base away from the sleeve, a support plate is slidably sleeved on the guide column, a spring is sleeved on the guide column, one end of the spring is fixedly connected to the support plate, and the other end of the spring is fixedly connected to the base, a sliding assembly is fixedly arranged in the middle of the support plate, the sliding assembly is slidably matched with the inner wall of the concrete pipe, a plurality of flaw detectors are arranged on the support plate, and the height of the flaw detectors is less than the height of the sliding assembly.

[0011] Preferably, the sliding assembly includes a push rod vertically fixedly connected to the side of the support plate away from the sleeve, the height of the flaw detector is smaller than the height of the push rod, and a ball is slidably embedded in the end of the push rod away from the support plate.

[0012] Preferably, the lifting mechanism is one of an electric push rod, a hydraulic jack, and a scissor lift.

[0013] Preferably, a high-definition camera is fixedly mounted on a side of the support plate away from the sleeve.

[0014] Preferably, the number of the plurality of guide pillars is at least two.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects:

[0016] The present invention provides a prestressed steel cylinder concrete pipe broken wire detection device. The self-adaptive walking mechanism can drag the body to move in the concrete pipe, and can be self-adaptively adjusted according to the change of the inner diameter of the concrete pipe, so as to keep walking close to the inner wall of the concrete pipe, thereby improving stability. The device can be applied to concrete pipes with different inner diameters, thereby improving the scope of application. The motor drives the gear and the annular gear plate to rotate, the annular gear plate drives the sleeve to rotate, the sleeve drives the lifting mechanism and the self-adaptive mechanism to rotate, and the self-adaptive mechanism drives the flaw detector to rotate to realize 360° all-round flaw detection of the inner wall of the concrete pipe. The self-adaptive mechanism can adjust its own length according to different inner diameters of the concrete pipe, so that the distance between the flaw detector and the inner wall of the concrete pipe remains unchanged, thereby improving the clarity of the flaw detection image and further improving the effectiveness of the flaw detection.

[0017] The invention is applicable to concrete pipes of different specifications, thus expanding the application scope, and especially solving the problem that there is a diameter-changing section in the laid pipeline, and the detection device cannot pass smoothly, causing detection difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 A prestressed steel cylinder concrete pipe broken wire detection device proposed by the present invention;

[0020] Figure 2 It is a structural schematic diagram of the walking mechanism in the present invention;

[0021] Figure 3This is a schematic diagram of the structure of the infrared rangefinder installed in the second embodiment of the present invention;

[0022] Among them: 1. Body; 2. Sleeve; 3. Annular gear plate; 4. Motor; 5. Gear; 6. Lifting mechanism; 7. Infrared rangefinder; 12. Guide column; 13. Support plate; 14. Spring; 15. Push rod; 16. Ball; 17. Flaw detector; 18. Base; 19. Connecting shaft; 20. Sliding seat; 21. Guide rail; 22. Limit baffle; 23. Sleeve 1; 24. Sleeve 2; 25. Bracket 1; 26. Bracket 2; 27. Tension spring; 28. Travel wheel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Embodiment 1:

[0026] Reference Figure 1 to Figure 2 As shown, the present invention provides a prestressed steel cylinder concrete pipe broken wire detection device, including a body 1, both ends of the body 1 are provided with adaptive walking mechanisms, the body 1 moves in the concrete pipe through the adaptive walking mechanisms, the upper limit rotating sleeve of the body 1 is provided with a sleeve 2, the sleeve 2 is coaxially fixed with an annular gear disk 3, a motor 4 is fixedly installed on the body 1, the output shaft of the motor 4 is fixedly connected with a gear 5, the gear 5 is meshed with the annular gear disk 3, a plurality of lifting mechanisms 6 are fixedly installed on the sleeve 2 in the radial direction, an adaptive mechanism is fixedly installed on the side of the lifting mechanism 6 away from the sleeve 2, and a plurality of flaw detectors 17 are fixedly installed on the side of the adaptive mechanism away from the sleeve 2.

[0027] In this embodiment, the sleeve 2 is rotatably connected to the fuselage 1 through a bearing, a lifting mechanism 6 is installed on the sleeve 2, and the motor 4 uses a reduction motor on the market to ensure the uniformity of the rotation speed of the sleeve 2, ensure the imaging effect of the flaw detector 17, and facilitate manual identification of problems. The flaw detector 17 adopts a portable X-ray machine, and a battery for providing power is installed inside the fuselage 1, and a socket for an external power supply is provided. A wireless transmission control device is installed on the fuselage 1, and a wireless transceiver transfer station is installed at the pipeline port or the inspection port. The wireless transceiver transfer station includes a two-way radio transmitter and receiver. The wireless transceiver transfer station is used to receive instructions issued by a wireless remote control on the ground and transmit them to the wireless transmission device installed on the fuselage 1. At the same time, the wireless transceiver transfer station can receive signals sent by the wireless transmission device installed on the fuselage 1, so that the wireless transmission device and the ground wireless remote control are interconnected, thereby realizing that the flaw detection information of the flaw detector 17 and the information collected by the high-definition camera are transmitted to the wireless remote control on the ground through the wireless transmission control device and are photographed on the screen of the wireless remote control.

[0028] The present invention can drag the fuselage 1 to move in the concrete pipe through the adaptive walking mechanism, and can adaptively adjust according to the change of the inner diameter of the concrete pipe, keep walking close to the inner wall of the concrete pipe, improve stability, and be suitable for concrete pipes with different inner diameters, thereby improving the scope of application; the motor 4 drives the gear 5 and the annular gear plate 3 to rotate, the annular gear plate 3 drives the sleeve 2 to rotate, the sleeve 2 drives the lifting mechanism 6 and the adaptive mechanism to rotate, the adaptive mechanism rotates and drives the flaw detector 17 to rotate to realize 360° all-round flaw detection of the inner wall of the concrete pipe, the adaptive mechanism can adjust its own length according to the different inner diameters of the concrete pipe, so that the distance between the flaw detector 17 and the inner wall of the concrete pipe remains unchanged, the clarity of the flaw detection image is improved, and the effectiveness of the flaw detection is further improved.

[0029] The invention is applicable to concrete pipes of different specifications, thus expanding the application scope, and especially solving the problem that there is a diameter-changing section in the laid pipeline, and the detection device cannot pass smoothly, causing detection difficulties.

[0030] Furthermore, the adaptive walking mechanism includes a sliding seat 20, the cross section of the sliding seat 20 is circular, one end of the sliding seat 20 is coaxially provided with a connecting shaft 19, the sliding seat 20 is coaxially fixedly connected to the fuselage 1 through the connecting shaft 19, the middle of the sliding seat 20 is fixedly sleeved with a limit baffle 22, and the two ends of the sliding seat 20 are respectively slidably sleeved with a sliding sleeve 1 23 and a sliding sleeve 24, and the outer wall of the sliding seat 20 is fixedly connected with a guide rail 21 along the axial direction, and the sliding sleeve 1 23 and the sliding sleeve 24 are both provided with a guide rail 21. Groove, a plurality of walking components are hinged between the sliding sleeve 1 23 and the sliding sleeve 24, and the plurality of walking components are arranged at equal intervals along the circumference of the sliding seat 20; the walking components include a bracket 1 25 and a bracket 2 26 hinged in an X shape, one end of the bracket 1 25 is hinged on the sliding sleeve 24, one end of the bracket 26 is hinged on the sliding sleeve 1 23, and the other end of the bracket 1 25 and the other end of the bracket 2 26 are both installed with a walking wheel 28 for driving the fuselage 1 to move, and a tension spring 27 is fixedly connected between the bracket 1 25 and the bracket 2 26.

[0031] In this embodiment, the connecting shaft 19 is a universal shaft, which facilitates the device to be turned in the laid concrete pipe.

[0032] The guide column 12 is provided to respectively cooperate with the grooves on the sliding sleeve 1 23 and the sliding sleeve 24 to slide along the axis of the sliding seat 20, and at the same time prevent the sliding sleeve 1 23 and the sliding sleeve 24 from rotating on the sliding seat 20. The tension spring 27 is provided to exert force between the bracket 1 25 and the bracket 2 26 that are hinged to each other, ensuring that there is a certain range of opening between the bracket 1 25 and the bracket 26, so that the walking wheel 28 is always in contact with the inner wall of the concrete pipe. Further, the walking wheel 28 is an electric wheel. When the inner diameter of the concrete pipe becomes smaller, the inner wall of the concrete pipe presses the walking wheel 28. Wheel 28, so that the opening between bracket 1 25 and bracket 2 26 becomes larger, at this time, the hinge point where bracket 1 25 and bracket 2 26 are hinged to each other approaches the axis of the sliding seat 20, and the tension of the tension spring 27 becomes larger, thereby realizing adaptive adjustment in concrete pipes with different inner diameters. The limit baffle 22 is set to prevent the sliding sleeve 1 23 and the sliding sleeve 24 from escaping from the sliding seat 20 during movement. It should be noted that the number of running wheels 28 is controlled in time according to the size of the inner diameter of the concrete pipe. When the inner diameter of the concrete pipe is larger and the walking resistance is smaller, the number of running wheels 28 can be appropriately reduced, but it is necessary to ensure that each walking wheel 28 rotates synchronously.

[0033] Furthermore, the adaptive mechanism includes a base 18 fixedly installed on the side of the lifting mechanism 6 away from the sleeve 2, and a plurality of guide columns 12 are vertically fixedly connected to the side of the base 18 away from the sleeve 2. A support plate 13 is slidably sleeved on the guide column 12, and a spring 14 is sleeved on the guide column 12. One end of the spring 14 is fixedly connected to the support plate 13, and the other end of the spring 14 is fixedly connected to the base 18. A sliding assembly is fixedly provided in the middle of the support plate 13, and the sliding assembly slides with the inner wall of the concrete pipe. A plurality of flaw detectors 17 are arranged on the support plate 13, and the height of the flaw detector 17 is less than the height of the sliding assembly.

[0034] In this embodiment, the lifting mechanism 6 adopts an electric push rod. The height of the lifting mechanism 6 is adjusted to make the sliding assembly contact with the inner wall of the concrete pipe. When the inner diameter of the concrete pipe changes and fluctuates, the spring 14 is provided to apply a reaction force to the support plate 13, and the support plate 13 pushes the sliding assembly so that the sliding assembly is always in contact with the inner wall of the concrete pipe, ensuring that the distance between the flaw detector 17 and the inner wall of the concrete pipe remains unchanged, thereby improving the clarity of the flaw detection image and further improving the effectiveness of the flaw detection. The guide column 12 is provided to limit the support plate 13, so that the support plate 13 moves along the guide column 12 under the action of the spring 14 to adapt to the variation of the inner diameter of the concrete pipe.

[0035] Furthermore, the sliding assembly includes a push rod 15 vertically fixedly connected to the side of the support plate 13 away from the sleeve 2, the height of the flaw detector 17 is smaller than the height of the push rod 15, and a ball 16 is slidably embedded in the end of the push rod 15 away from the support plate 13.

[0036] The balls 16 are arranged to roll along the inner wall of the concrete pipe to reduce friction, so that the push rod 15 can move more steadily under the rotation of the sleeve 2, and can pass over the protrusions or pits on the inner wall of the concrete pipe to improve the passability.

[0037] Furthermore, in order to facilitate observation of the internal environment of the concrete pipe and the contact between the ball 16 and the running wheel 28 and the inner wall of the concrete pipe, a high-definition camera is fixedly mounted on the side of the support plate 13 away from the sleeve 2 .

[0038] Furthermore, in order to improve the stability of the movement of the support plate 13, the number of the plurality of guide posts 12 is at least two.

[0039] The working principle of the prestressed steel cylinder concrete pipe broken wire detection device provided by the present invention is as follows: when in use, the device is placed in the concrete pipe to be tested, the height of the lifting mechanism 6 is adjusted, the ball 16 is abutted against the inner wall of the concrete pipe, the spring 14 has a certain amount of compression, and the motor 4 is started at the same time, the motor 4 drives the gear 5 and the annular gear plate 3 to rotate, the annular gear plate 3 drives the sleeve 2 to rotate, the sleeve 2 drives the lifting mechanism 6 and the support plate 13 to rotate, the support plate 13 drives the push rod 15 and the flaw detector 17 and the high-definition camera to rotate, so as to realize 360° all-round flaw detection of the inner wall of the concrete pipe and image collection of the surrounding environment, and the screen displays whether there is a broken wire in the steel wire wound inside the concrete pipe. After completing one round of flaw detection, the walking wheel 28 is started to make the device When the distance to the front end is reached, the running wheel 28 stops running and the next section of concrete pipe is inspected. The above operation is repeated to complete the inspection of all concrete pipes. When the inner diameter of the concrete pipe changes, the opening of the hinge between the bracket 26 and the bracket 1 25 is controlled by the tension spring 27, so that the running wheel 28 always abuts against the inner wall of the concrete pipe. At the same time, the height of the lifting mechanism 6 is adjusted so that the ball 16 always abuts against the inner wall of the concrete pipe under the action of the spring 14. It should be noted that if the inner diameter size variable of the concrete pipe does not exceed the deformation variable of the spring 14, there is no need to adjust the height of the lifting mechanism 6. The spring 14 is set to apply a reaction force to the support plate 13, and the support plate 13 pushes the push rod 15 to make the ball 16 abut against the inner wall of the concrete pipe.

[0040] Embodiment 2:

[0041] Reference Figure 3 As shown, the difference between this embodiment and the first embodiment is that an infrared rangefinder 7 is fixedly installed along the radial direction of the limit baffle 22, and the infrared rangefinder 7 and the lifting mechanism 6 are electrically connected to the wireless transmission control device. The infrared rangefinder 7 monitors the change in the distance between the limit baffle 22 and the inner wall of the concrete pipe and inputs it to the wireless transmission control device. The wireless transmission control device controls the height adjustment of the lifting mechanism 6 through the distance variable between the limit baffle 22 and the inner wall of the concrete pipe, so that the adjustment amount of the lifting mechanism 6 is consistent with the variable monitored by the infrared rangefinder 7, thereby realizing the linkage of the adaptive walking mechanism and the adaptive mechanism, so that the device can smoothly pass through the variable diameter section in the laid pipeline and successfully complete the flaw detection.

[0042] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. A prestressed concrete cylinder pipe broken wire detection device, characterized in that: The invention comprises a machine body (1), wherein both ends of the machine body (1) are provided with adaptive walking mechanisms, and the machine body (1) moves in a concrete pipe through the adaptive walking mechanisms; the upper limit rotating sleeve of the machine body (1) is provided with a sleeve (2), and the sleeve (2) is coaxially fixed with an annular gear disk (3); a motor (4) is fixedly mounted on the machine body (1), and the output shaft of the motor (4) is fixedly connected with a gear (5), and the gear (5) is meshed with the annular gear disk (3); a plurality of lifting mechanisms (6) are fixedly mounted on the sleeve (2) in the radial direction, and an adaptive mechanism is fixedly mounted on the side of the lifting mechanism (6) away from the sleeve (2); and a plurality of flaw detectors (17) are fixedly mounted on the side of the adaptive mechanism away from the sleeve (2).

2. The prestressed concrete cylinder pipe broken wire detection device according to claim 1 is characterized in that: The adaptive walking mechanism comprises a sliding seat (20), the cross section of the sliding seat (20) is circular, one end of the sliding seat (20) is coaxially provided with a connecting shaft (19), the sliding seat (20) is coaxially fixedly connected with the fuselage (1) through the connecting shaft (19), a limit baffle (22) is provided on the middle fixed sleeve of the sliding seat (20), the two ends of the sliding seat (20) are respectively slidably provided with a sliding sleeve 1 (23) and a sliding sleeve 2 (24), the outer wall of the sliding seat (20) is fixedly connected with a guide rail (21) along the axial direction, the sliding sleeve 1 (23) and the sliding sleeve 2 (24) are both provided with grooves adapted to the guide rail (21), and the sliding sleeve 1 (23) and the sliding sleeve 2 (24) are provided with grooves adapted to the guide rail (21). A plurality of travel assemblies are hinged between the slide sleeve 1 (23) and the slide sleeve 2 (24), and the plurality of travel assemblies are arranged at equal intervals along the circumference of the sliding seat (20); the travel assembly comprises a bracket 1 (25) and a bracket 2 (26) hinged in an X shape, one end of the bracket 1 (25) is hinged on the slide sleeve 2 (24), and one end of the bracket 2 (26) is hinged on the slide sleeve 1 (23); the other end of the bracket 1 (25) and the other end of the bracket 2 (26) are both equipped with travel wheels (28) for driving the body (1) to move, and a tension spring (27) is fixedly connected between the bracket 1 (25) and the bracket 2 (26).

3. The prestressed concrete cylinder pipe broken wire detection device according to claim 2 is characterized in that: The running wheel (28) is an electric wheel.

4. The prestressed concrete cylinder pipe broken wire detection device according to claim 1, characterized in that: The adaptive mechanism comprises a base (18) fixedly mounted on a side of the lifting mechanism (6) away from the sleeve (2); a plurality of guide columns (12) are vertically fixedly connected to the side of the base (18) away from the sleeve (2); a support plate (13) is slidably sleeved on the guide column (12); a spring (14) is sleeved on the guide column (12); one end of the spring (14) is fixedly connected to the support plate (13); the other end of the spring (14) is fixedly connected to the base (18); a sliding component is fixedly arranged in the middle of the support plate (13); the sliding component is slidably matched with the inner wall of the concrete pipe; a plurality of flaw detectors (17) are arranged on the support plate (13); and the height of the flaw detectors (17) is less than the height of the sliding component.

5. The prestressed concrete cylinder pipe broken wire detection device according to claim 4, characterized in that: The sliding assembly comprises a push rod (15) vertically fixedly connected to the side of the support plate (13) away from the sleeve (2), the height of the flaw detector (17) is smaller than the height of the push rod (15), and a ball (16) is slidably embedded at one end of the push rod (15) away from the support plate (13).

6. The prestressed steel cylinder concrete pipe broken wire detection device according to claim 1, characterized in that: The lifting mechanism (6) is a kind of electric push rod, hydraulic jack and scissor lift.

7. The prestressed concrete cylinder pipe broken wire detection device according to claim 4, characterized in that: A high-definition camera is fixedly mounted on a side of the support plate (13) away from the sleeve (2).

8. The prestressed concrete cylinder pipe broken wire detection device according to claim 4, characterized in that: The number of the plurality of guide columns (12) is at least two.

Images