Flaw detection device for high-strength pipeline steel plate

Abstract

The utility model discloses a flaw detection device for a high-strength pipeline steel plate. The flaw detection device comprises a main frame mechanism, a cleaning assembly and a flaw detection assembly, the main frame mechanism is provided with a first supporting frame. The cleaning assembly and the flaw detection assembly are mounted in the support frame I; the cleaning assembly comprises a transmission device A, a second supporting frame, a water storage tank, a water pipe rolling brush, a flow dividing water pump, a high-pressure spray head and a second supporting rod. The transmission device A comprises a motor I, a motor II, a belt pulley I, a belt pulley II, a roller and a belt I; the flaw detection assembly comprises a third supporting frame, a third belt, a fifth belt wheel, a bidirectional lead screw, a movable frame and an ultrasonic flaw detector. The cleaning assembly is provided with a guide plate, a filter screen, a transmission device B and a limiting and fixing device; the surface of a steel plate is automatically cleaned through the cleaning device, and then the steel plate is detected through an ultrasonic flaw detector of the flaw detection assembly, so that the accuracy of detection data is improved; the filter screen vibrates through the transmission device B and the limiting and fixing device, so that the filter screen is prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of steel plate inspection technology, specifically to a flaw detection device for high-strength pipeline steel plates. Background Technology

[0002] High-strength pipeline steel plate is a high-performance steel used in oil and gas transmission pipelines. It has excellent strength and toughness, and can meet the requirements of long-distance and high-pressure transmission. The microstructure of high-strength pipeline steel usually includes ferrite-pearlite, acicular ferrite, bainite-martensite and other types. These microstructures determine the performance and safe service capability of the steel.

[0003] Surface cleaning is a crucial step in the production and processing of high-strength pipeline steel plates. Because thorough cleaning of the steel plate surface is often neglected after production and during processing, sludge and impurities easily adhere to the surface. If these contaminants are not removed before flaw detection, they will affect the accuracy of the test results. However, most testing devices do not effectively clean the removed contaminants, leading to clogged filters, reduced filter efficiency, and significantly reduced equipment cleanliness due to untimely removal of impurities, increasing the difficulty of equipment cleaning and the workload of personnel. Utility Model Content

[0004] The purpose of this invention is to provide a flaw detection device for high-strength pipeline steel plates that improves detection efficiency and accuracy, is easy to clean, and saves time and effort. This addresses the technical problems of low detection accuracy due to the lack of cleaning during steel plate inspection, or the failure to effectively remove dirt after cleaning the steel plate, which leads to clogging of the filter screen over time and requires manual cleaning, increasing the workload of workers.

[0005] To solve the above technical problems, the solution adopted by this utility model is as follows:

[0006] A flaw detection device for high-strength pipeline steel plates includes a main frame mechanism, a cleaning component, and a flaw detection component; the main frame mechanism is provided with a support frame; the cleaning component and the flaw detection component are installed inside the support frame from left to right;

[0007] The cleaning assembly includes a transmission device A, a second support frame, a water tank, a water pipe roller brush, a diversion water pump, a high-pressure nozzle, and a second support rod. The second support frame is fixedly installed on top of the first support frame. The water tank is fixedly installed on top of the second support frame. The roller brush is rotatably connected to the inside of the second support frame and is driven to rotate by the transmission device to rotate and brush the steel plate. The diversion water pump is installed on the left side of the roller brush via the second support rod, with its top connected to the water tank via the water pipe and its bottom connected to the high-pressure nozzle. The diversion water pump sprays water from inside the high-pressure nozzle through the water tank and water pipe to rinse impurities on the surface of the steel plate. The steel plate is then brushed by the roller brush to further improve the cleaning of impurities on the surface of the steel plate. Finally, the cleaned steel plate is inspected.

[0008] The transmission device A includes a first motor, a second motor, a first pulley, a second pulley, a roller, and a first belt. Several rollers are evenly distributed inside the upper part of the support frame. The first motor is fixedly installed on the support frame, and its output end is fixedly connected to one of the rollers. The first pulley is fixedly installed on one end of the roller, and several rollers are connected via the first pulley and the first belt. The output end of the second motor is fixedly connected to the roller brush. The second pulley is fixedly installed on the other end of the roller. When the operator starts the first motor, it drives the roller to rotate and convey the steel plate. Each roller has multiple protrusions on its outer surface to increase friction and prevent slippage. Starting the second motor drives the roller brush to rotate, brushing and cleaning the steel plate, removing oil and impurities from its surface for subsequent inspection.

[0009] The flaw detection assembly includes a support frame three, a belt three, a pulley five, a double-acting screw, a movable frame, and an ultrasonic flaw detector. The support frame three is fixedly installed on the top right side of the support frame one. The double-acting screw is rotatably connected to the inside of the support frame three. The movable frame is sleeved on the double-acting screw. The ultrasonic flaw detector is fixedly installed at the bottom end of the movable frame. One end of the double-acting screw passes through the support frame three and is fixedly connected to the pulley five. One end of the belt three is connected to the pulley two, and the other end is connected to the pulley five. A motor one drives the pulley two to rotate, thereby driving the belt three to rotate as well. The belt three drives the pulley five to rotate, causing the double-acting screw to rotate, which in turn moves the ultrasonic flaw detector to inspect the steel plate. A limiting device is provided on the bottom side inside the movable frame, which drives the movable frame to move.

[0010] The cleaning assembly includes a guide plate, a filter screen, a transmission device B, and a limiting and fixing device. The filter screen is located at the lower end of the roller. The guide plate is located directly below the filter screen, and one end is rotatably connected to one end of the filter screen via a rotating rod. One end of the transmission device B is connected to the bottom left side of the filter screen, and the other end is connected to the output end of the motor. Four limiting and fixing devices are provided, symmetrically installed in pairs at the other end of the filter screen. Each pair of limiting and fixing devices is installed at the upper and lower ends of one side of the filter screen. The filter screen is fixedly connected to the inner wall of the support frame through the limiting and fixing devices. The tilt angle of the filter screen can be adjusted by the transmission device B to filter impurities cleaned by the roller brush when cleaning the steel plate. The guide plate at the lower end can guide the cleaning wastewater to the collection device for treatment. The limiting and fixing device, in conjunction with the transmission device B, vibrates the filter screen, vibrating the impurities out of the filter screen and preventing impurities from clogging the filter screen, which would make it difficult for the filter screen to filter impurities in the wastewater.

[0011] Furthermore, the transmission device B includes pulley three, belt two, pulley four, a rotating shaft, a turntable, a support rod, and a limiting bracket. Pulley three is fixedly connected to the output end of motor one. One end of belt two is connected to pulley three, and the other end is connected to one end of the rotating shaft. The limiting bracket is fixedly installed at the bottom end of the filter screen. One end of the support rod is rotatably connected to the limiting bracket, and the other end is rotatably connected to the turntable. The turntable is fixedly connected to the other end of the rotating shaft. Pulley three is internally fixedly connected to the output end of motor one. When motor one works, it also drives pulley three to rotate. Belt two, through the rotation of pulley three, drives pulley four to rotate. The rotating shaft, through the rotation of pulley four, drives the turntable to rotate. The support rod, through the rotation of the turntable and the limiting bracket, drives the filter screen to move up and down. When the filter screen moves downward, it drives the limiting fixing device to move, causing the filter screen to vibrate.

[0012] Furthermore, the limiting and fixing device includes a spring, a support plate, a support rod, and a limiting plate. One end of the support rod is fixedly connected to the filter screen, and the other end passes through the support plate and is fixedly connected to the limiting plate. The spring is fitted onto one end of the support rod, and its two ends are fixedly connected to the filter screen and the support plate, respectively. The support plate provides support to the filter screen through the support rod. When the filter screen moves downward, it compresses the spring. The spring, through the limiting action of the support plate, generates a certain rebound force, causing the filter screen to move upward, vibrating the filter screen and dislodging it from the device, thus preventing clogging.

[0013] Furthermore, the support frame three has a T-shaped groove on its inner top side; the movable frame has a T-shaped slider at its top; the T-shaped groove and the T-shaped slider are matched with each other. The outer surface of the T-shaped slider is slidably connected to the inside of the T-shaped groove, which facilitates limiting the movable frame and prevents the movable frame from rotating with the bidirectional lead screw, thus preventing the movable frame from being unable to move linearly within the bidirectional frame.

[0014] Furthermore, the limiting device includes a telescopic rod one, a spring two, and a telescopic rod two; the bottom end of the telescopic rod two is fixedly connected to the movable frame, and the top end is fixedly connected to the spring two; the top end of the telescopic rod one is fixedly connected to the spring two, and the bottom end is slidably connected to the telescopic rod two. The top of the telescopic rod two is connected to the telescopic rod one through the spring two. When the bidirectional screw rotates, the telescopic rod one slides on its surface through a bidirectional groove, thereby driving the movable frame to move on the bidirectional screw. When the movable frame reaches one end, the bidirectional screw continues to rotate, and the interior of the bidirectional groove exerts a force on the telescopic rod one. The force on the telescopic rod one compresses the spring two, causing the telescopic rod one to move into another bidirectional groove. At the same time, the spring two, through its rebound force, drives the telescopic rod one to reset, thereby changing the direction of movement of the movable frame. The movement of the telescopic rod one drives the movable frame to move, and the movement of the movable frame drives the ultrasonic flaw detector to move together, performing all-round detection on the steel plate.

[0015] The working principle of this utility model is as follows:

[0016] In use, the steel plate is placed on the roller, and motor one is turned on to drive the roller to convey the steel plate. At the same time, motor two is started to drive the roller brush to rotate. The diversion water pump sprays water from the high-pressure nozzle through the water tank and water pipe to rinse the impurities on the surface of the steel plate. Then the steel plate is brushed by the roller brush to clean the impurities on the surface of the steel plate. When motor one rotates, it drives the roller to rotate, and at the same time, it drives pulley two at the other end of the roller to rotate. Belt three, through pulley two, drives pulley five to rotate. The double-acting screw, through pulley five, also rotates together, and through the internal telescopic rod two and telescopic rod one, it drives the moving frame to move together. Spring two can change the direction of movement of the moving frame, thereby cleaning the steel plate. The system provides comprehensive detection, significantly improving the accuracy of the detection data. The T-shaped slider at the top of the moving frame slides within the T-shaped groove, providing a certain degree of limitation and preventing the moving frame from rotating along with the bidirectional lead screw. When motor one is working, it drives pulley three to rotate. The rotating shaft, through pulley four, drives the filter screen to move up and down. As the filter screen moves downwards, it compresses spring one, and spring one, through its rebound force, drives the filter screen upwards, generating vibration and cleaning impurities. This prevents impurities washed down by the roller brush from clogging the filter screen, allowing for continuous self-cleaning of the filter screen, greatly reducing the workload of workers and significantly improving the cleanliness of the equipment.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention, through a transmission device A, a support frame II, a water storage tank, a water pipe roller brush, a diversion water pump, and a high-pressure nozzle, can automatically clean the surface of steel plates, removing sludge and impurities. Then, the flaw detection component, via belt III, pulley V, a bidirectional lead screw, and a moving frame, drives an ultrasonic flaw detector to perform comprehensive detection of the steel plate. This method of cleaning before detection significantly improves the accuracy of the detection data. The filter screen, through compression, causes a spring I to rebound, moving the filter screen upwards and generating a vibration effect. This prevents impurities washed down by the roller brush from clogging the filter screen, allowing for continuous self-cleaning. The filter screen and guide plate design facilitate the collection and filtration of wastewater and impurities generated during the cleaning process, simplifying equipment cleaning and maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the filter structure of this utility model;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0022] Figure 4 This is a schematic diagram of the second support frame structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the bidirectional lead screw structure of this utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the movable frame structure of this utility model;

[0025] Figure 7 for Figure 6 Schematic diagram of the structure at point B.

[0026] In the diagram: 1. Main frame mechanism; 111. Support frame one; 2. Cleaning assembly; 211. Motor one; 212. Motor two; 213. Pulley one; 214. Guide plate; 215. Filter screen; 216. Pulley two; 217. Roller; 218. Belt one; 219. Pulley three; 220. Belt two; 221. Pulley four; 222. Rotating shaft; 223. Turntable; 224. Support rod; 225. Limiting bracket; 226. Spring one; 227. Support plate; 228. Support rod one; 2 29. Limiting plate; 230. Support frame two; 231. Water storage tank; 232. Water pipe; 233. Roller brush; 234. Diverter pump; 235. High-pressure nozzle; 236. Support rod two; 3. Flaw detection assembly; 311. Support frame three; 312. Belt three; 313. Belt pulley five; 314. Two-way lead screw; 315. Moving frame; 316. Ultrasonic flaw detector; 317. T-shaped slide; 318. T-shaped slider; 319. Telescopic rod one; 320. Spring two; 321. Telescopic rod two. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] The following is a detailed description of the flaw detection device for high-strength pipeline steel plates according to the present invention, with reference to the accompanying drawings: Example 1

[0030] A flaw detection device for high-strength pipeline steel plates includes a main frame mechanism 1, a cleaning component 2, and a flaw detection component 3. The main frame mechanism 1 is provided with a support frame 111. The cleaning component 2 and the flaw detection component 3 are installed inside the support frame 111 from left to right. The cleaning component 2 includes a transmission device A, a second support frame 230, a water storage tank 231, a water pipe 232, a roller brush 233, a diversion pump 234, a high-pressure nozzle 235, and a second support rod 236. The second support frame 230 is fixedly installed on the top of the first support frame 111. The water storage tank 231 is fixedly installed on the top of the second support frame 230. The roller brush 233 is rotatably connected to the inside of the second support frame 230. The diversion pump 234 is installed on the left side of the roller brush 233 through the second support rod 236, and its top is connected to the water storage tank 231 through the water pipe 232, and its bottom is connected to the high-pressure nozzle 235.

[0031] The transmission device A includes a first motor 211, a second motor 212, a first pulley 213, a second pulley 216, a roller 217, and a first belt 218. Several rollers 217 are evenly distributed inside the upper part of the support frame 111. The first motor 211 is fixedly installed on the support frame 111, and its output end is fixedly connected to one of the rollers 217. The first pulley 213 is fixedly installed on one end of the roller 217, and several rollers 217 are connected through the first pulley 213 and the first belt 218. The output end of the second motor 212 is fixedly connected to the roller brush 233. The second pulley 216 is fixedly installed on the other end of the roller 217.

[0032] The flaw detection assembly 3 includes a support frame 311, a belt 312, a pulley 313, a double-acting screw 314, a movable frame 315, and an ultrasonic flaw detector 316. The support frame 311 is fixedly installed on the top right side of the support frame 311. The double-acting screw 314 is rotatably connected to the inside of the support frame 311. The movable frame 315 is sleeved on the double-acting screw 314. The ultrasonic flaw detector 316 is fixedly installed at the bottom end of the movable frame 315. One end of the double-acting screw 314 passes through the support frame 311 and is fixedly connected to the pulley 313. One end of the belt 312 is connected to the pulley 216, and the other end is connected to the pulley 313. A limiting device is provided on the bottom side inside the movable frame 315.

[0033] The cleaning assembly 2 includes a guide plate 214, a filter screen 215, a transmission device B, and a limiting and fixing device. The filter screen 215 is located at the lower end of the roller 217. The guide plate 214 is located directly below the filter screen 215, and one end is rotatably connected to one end of the filter screen 215 via a rotating rod. One end of the transmission device B is connected to the bottom left side of the filter screen 215, and the other end is connected to the output end of the motor 211. Four limiting and fixing devices are provided, and they are symmetrically installed in pairs at the other end of the filter screen 215. Each pair of limiting and fixing devices is installed at the upper and lower ends of one side of the filter screen 215. The filter screen 215 is fixedly connected to the inner wall of the support frame 111 through the limiting and fixing devices.

[0034] The working principle of this embodiment is as follows:

[0035] In use, the steel plate is placed on the roller 217. The motor 211 is turned on, and the roller 217 is driven by the belt 218 on the pulley 213 to convey the steel plate. Simultaneously, the motor 212 on one side of the support frame 230 is started, driving the roller brush 233 to rotate. The diversion pump 234 sprays water from the high-pressure nozzle 235 through the water tank 231 and water pipe 232 to rinse impurities on the surface of the steel plate. The steel plate is then brushed by the roller brush 233 to remove further impurities. The wastewater after cleaning can be filtered through the filter screen 215 and then discharged through a limiting filter. The positioning device and transmission device B vibrate and clean the filter screen 215 to prevent impurities from clogging it. When the motor 1 211 rotates, it drives the roller 217 to rotate, and at the same time, it drives the pulley 216 at the other end of the roller 217 to rotate. The belt 312 rotates through the pulley 216, which in turn drives the pulley 5 313 ​​to rotate. The bidirectional lead screw 314 also rotates through the pulley 5 313, and moves the moving frame 315 together through the internal limiting device, thereby performing all-round detection of the steel plate and greatly improving the accuracy of the detection data. Example 2

[0036] The difference from Embodiment 1 is that the transmission device B includes a third pulley 219, a second belt 220, a fourth pulley 221, a rotating shaft 222, a turntable 223, a support rod 224, and a limiting bracket 225; the third pulley 219 is fixedly connected to the output end of the first motor 211; one end of the second belt 220 is connected to the third pulley 219, and the other end is connected to one end of the rotating shaft 222; the limiting bracket 225 is fixedly installed at the bottom end of the filter screen 215; one end of the support rod 224 rotates with the limiting bracket 225. One end is connected to the filter screen 215, and the other end is rotatably connected to the turntable 223; the turntable 223 is fixedly connected to the other end of the rotating shaft 222; the limiting and fixing device includes a spring 226, a support plate 227, a support rod 228, and a limiting plate 229; one end of the support rod 228 is fixedly connected to the filter screen 215, and the other end passes through the support plate 227 and is fixedly connected to the limiting plate 229; the spring 226 is sleeved on one end of the support rod 228, and both ends are fixedly connected to the filter screen 215 and the support plate 227 respectively.

[0037] The internal pulley 219 of the transmission device B is fixedly connected to the output end of the motor 211. When the motor 211 works, it also drives the pulley 219 to rotate. The rotation of the belt 220 through the pulley 219 drives the pulley 221 to rotate. The rotation of the shaft 222 through the pulley 221 drives the turntable 223 to rotate. The support rod 224, through the rotation of the turntable 223 and the limiting bracket 225, drives the filter screen 215 to move up and down. The support plate 227 provides a certain support for the filter screen 215 through the support rod 228. The filter screen 215 acts as a support. When the filter screen 215 moves downward, it compresses the spring 226. The spring 226, through the limiting action of the support plate 227, generates a certain rebound force, which drives the filter screen 215 upward, causing the filter screen 215 to vibrate. The spring 226, through the rebound force, drives the filter screen 215 upward to vibrate, cleaning impurities and preventing impurities washed down by the roller brush 233 from clogging the filter screen 215. The filter screen 215 can continuously self-clean. The guide plate 214 at the lower end can guide the cleaning wastewater to the external collection device for treatment.

[0038] The working principle of this embodiment is the same as that of Embodiment 1. Example 3

[0039] The difference from Embodiment 2 is that the support frame 311 has a T-shaped groove 317 on its top side; the movable frame 315 has a T-shaped slider 318 at its top; the T-shaped groove 317 and the T-shaped slider 318 are matched with each other; the limiting device includes a telescopic rod 319, a spring 320 and a telescopic rod 321; the bottom end of the telescopic rod 321 is fixedly connected to the movable frame 315 and the top end is fixedly connected to the spring 320; the top end of the telescopic rod 319 is fixedly connected to the spring 320 and the bottom end is slidably connected to the telescopic rod 321.

[0040] The top of telescopic rod 321 is connected to telescopic rod 319 via spring 320. When the double-acting screw 314 rotates, telescopic rod 319 slides on its surface via a double-acting groove, thereby driving the moving frame 315 to move on the double-acting screw 314. When the moving frame 315 reaches one end, the double-acting screw 314 continues to rotate, and the inside of the double-acting groove exerts a force on telescopic rod 319. The force acting on telescopic rod 319 compresses spring 320, causing telescopic rod 319 to move into another double-acting groove. Simultaneously, spring 320... 320, through the action of the rebound force, will drive the telescopic rod 319 to reset, thereby changing the moving direction of the moving frame 315. While the telescopic rod 319 moves, it will drive the moving frame 315 to move. The outer surface of the T-shaped slider 318 at the bottom of the moving frame 315 is slidably connected to the inside of the T-shaped groove 317, which facilitates the limiting of the moving frame 315 and prevents the moving frame 315 from rotating with the rotation of the bidirectional screw 314. The movement of the moving frame 315 will drive the ultrasonic flaw detector 316 to move together, so as to perform all-round detection of the steel plate.

[0041] The working principle of this embodiment is the same as that of embodiment 2.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flaw detection device for high-strength pipeline steel plates, characterized in that: Including main frame mechanism (1), cleaning assembly (2) and flaw detection assembly (3), main frame mechanism (1) is equipped with support frame one (111), cleaning assembly (2) and flaw detection assembly (3) are installed from left to right inside support frame one (111), The cleaning assembly (2) includes transmission device A, support frame two (230), water storage tank (231), water pipe (232), brush (233), shunt water pump (234), high-pressure spray head (235) and support rod two (236), support frame two (230) is fixedly installed on the top of support frame one (111), water storage tank (231) is fixedly installed on the top of support frame two (230), brush (233) is rotatably connected with the inside of support frame two (230), shunt water pump (234) is installed on the left side of brush (233) through support rod two (236), the top is connected with water storage tank (231) through water pipe (232), and the bottom end is connected with high-pressure spray head (235), The transmission device A includes motor one (211), motor two (212), pulley one (213), pulley two (216), roller (217) and belt one (218), the roller (217) is equipped with several, and is evenly distributed on the inside upper end of support frame one (111), motor one (211) is fixedly installed on support frame one (111), and the output end is fixedly connected with one roller (217), pulley one (213) is fixedly installed on one end of roller (217), and several roller (217) are connected through pulley one (213) and belt one (218), the output end of motor two (212) is fixedly connected with brush (233), pulley two (216) is fixedly installed on the other end of roller (217), The flaw detection assembly (3) includes support frame three (311), belt three (312), pulley five (313), bidirectional screw rod (314), moving frame (315) and ultrasonic flaw detector (316), support frame three (311) is fixedly installed on the top right side of support frame one (111), bidirectional screw rod (314) is rotatably connected with the inside of support frame three (311), moving frame (315) is sleeved on bidirectional screw rod (314), ultrasonic flaw detector (316) is fixedly installed on the bottom end of moving frame (315), one end of bidirectional screw rod (314) penetrates through support frame three (311) and is fixedly connected with pulley five (313), one end of belt three (312) is connected with pulley two (216), and the other end is connected with pulley five (313), the inside bottom side of moving frame (315) is provided with limiting device, The cleaning assembly (2) is provided with a flow guide plate (214), a filter screen (215), a transmission device B and a limiting fixing device; the filter screen (215) is located at the lower end of the roller (217); the flow guide plate (214) is located directly below the filter screen (215), and one end is rotatably connected with one end of the filter screen (215) through a rotating rod; one end of the transmission device B is connected with the bottom left side of the filter screen (215), and the other end is connected with the output end of the motor (211); the limiting fixing device is provided with four, which are symmetrically installed on the other end of the filter screen (215); every two limiting fixing devices are respectively installed on the upper and lower ends of one side of the filter screen (215); the filter screen (215) is fixedly connected with the inner wall of the supporting frame (111) through the limiting fixing device.

2. The flaw detection device for a high-strength pipeline steel plate according to claim 1, characterized by: The transmission device B comprises a belt pulley three (219), a belt two (220), a belt pulley four (221), a rotating shaft (222), a rotating disc (223), a supporting rod (224) and a limiting support (225); the belt pulley three (219) is fixedly connected with the output end of the motor (211); one end of the belt two (220) is connected with the belt pulley three (219), and the other end is connected with one end of the rotating shaft (222); the limiting support (225) is fixedly installed at the bottom end of the filter screen (215); one end of the supporting rod (224) is rotatably connected with the limiting support (225), and the other end is rotatably connected with the rotating disc (223); the rotating disc (223) is fixedly connected with the other end of the rotating shaft (222).

3. The flaw detection device for a high-strength pipeline steel plate according to claim 1, characterized by: The limiting fixing device comprises a spring one (226), a supporting plate (227), a supporting rod one (228) and a limiting plate (229); one end of the supporting rod one (228) is fixedly connected with the filter screen (215), and the other end is fixedly connected with the limiting plate (229) through the supporting plate (227); the spring one (226) is sleeved on one end of the supporting rod one (228), and both ends are fixedly connected with the filter screen (215) and the supporting plate (227) respectively.

4. The apparatus for inspecting a high-strength pipeline steel plate according to claim 1, characterized by: The supporting frame three (311) is internally provided with a T-shaped sliding groove (317); the top end of the moving frame (315) is provided with a T-shaped sliding block (318); the T-shaped sliding groove (317) and the T-shaped sliding block (318) are matched with each other.

5. The apparatus for detecting flaws in a high-strength pipeline steel plate according to claim 1, characterized by: The limiting device comprises a telescopic rod one (319), a spring two (320) and a telescopic rod two (321); the bottom end of the telescopic rod two (321) is fixedly connected with the moving frame (315), and the top end is fixedly connected with the spring two (320); the internal top end of the telescopic rod one (319) is fixedly connected with the spring two (320), and the lower end is slidingly connected with the telescopic rod two (321).

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