Nondestructive testing device for outer wall of pipe

Abstract

The invention belongs to the technical field of pipe production detection, and particularly relates to a pipe outer wall nondestructive testing device which comprises a rack, a U-shaped cover fixed to the surface of the rack and an ultrasonic detector arranged above the rack. The rotary conveying assembly comprises a rotating shaft arranged on the surface of the rack. According to the device, the pipe can rotate while being conveyed, so that the outer surface of the pipe can be comprehensively detected by matching with an ultrasonic detector, the phenomenon of missing detection is avoided, the accuracy of nondestructive detection data of the outer wall of the pipe is improved, the pipe does not need to be manually rotated, the labor cost is reduced, and the working efficiency is improved. Impurities on the surfaces of the pipes can be scraped and cleaned, the cleanness of the outer walls of the pipes is guaranteed, the situation that the detection accuracy is affected by dust and other impurities on the outer surfaces of the pipes is prevented, the uneven positions of the pipes can be marked, and machining personnel can conveniently and visually observe and detect the pipes.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe production detection, and in particular relates to a nondestructive detection device for the outer wall of a pipe. Background Art

[0002] Pipes are materials used to make pipe fittings. Different pipe fittings require different pipes. The quality of the pipes directly determines the quality of the pipe fittings. In the process of producing large-diameter pipes, there are also unfavorable factors that affect the flatness of the outer wall, which makes it inevitable that there are convex or concave parts on the outer wall of the pipe. Therefore, it is necessary to test the surface of the pipe.

[0003] When inspecting the outer wall of the pipe, the inspector needs to hold the inspection instrument and manually rotate the pipe to conduct a comprehensive inspection of the outer surface of the pipe. Due to the different diameters of the pipes, it is more laborious to inspect large-diameter pipes, resulting in high labor costs and slow inspection efficiency. During the long inspection process, the inspector's mental concentration decreases, which may cause failure to notice the electrical signal fluctuation graph on the display screen, resulting in unqualified pipes flowing into qualified pipes. Secondly, when impurities are attached to the outer wall of the pipe, it will affect the inspection results.

[0004] In order to solve the above problems, the present application proposes a non-destructive testing device for the outer wall of a pipe. Summary of the invention

[0005] To solve the problems raised in the above background technology. The present invention provides a non-destructive testing device for the outer wall of a pipe, which can ensure that the pipe can rotate while being transported, so as to cooperate with the set ultrasonic detector to conduct a comprehensive test on the outer surface of the pipe, avoid missed detection, improve the accuracy of the non-destructive testing data of the outer wall of the pipe, and do not need to rotate the pipe manually, reducing labor costs. It can also scrape and clean the impurities on the surface of the pipe to ensure the cleanliness of the outer wall of the pipe, and prevent dust and other debris on the outer surface of the pipe from affecting the accuracy of the test. It can also mark the uneven position of the pipe, which is convenient for the processing personnel to intuitively observe the uneven parts, and avoid the mental concentration of the inspectors to decrease during the long-term detection process, resulting in failure to notice the electrical signal fluctuation diagram on the display screen, resulting in unqualified pipes flowing into qualified pipes.

[0006] To achieve the above object, the present invention provides the following technical solutions: a nondestructive testing device for the outer wall of a pipe, comprising a frame, a U-shaped cover fixed on the surface of the frame, and an ultrasonic detector arranged above the frame;

[0007] A rotating transmission assembly is installed on the surface of the frame, and the rotating transmission assembly includes a rotating shaft arranged on the surface of the frame, a V-shaped guide roller fixedly installed on the outer surface of the rotating shaft, and a rotating frame, a second sprocket transmission group and a servo motor for controlling the rotation of the V-shaped guide roller to realize the rotating transmission of the pipe;

[0008] A detection and cleaning assembly is installed in the U-shaped cover, and the detection and cleaning assembly includes a sliding sleeve arranged in the U-shaped cover, a spiral scraper arranged below the sliding sleeve, and a spring, a T-shaped connecting rod and a pressure plate for controlling the spiral scraper to abut against the outer wall of the pipe;

[0009] A detection mark assembly is arranged in the U-shaped cover, and the detection mark assembly includes a U-shaped frame arranged in the U-shaped cover, a fixed shaft fixed in the U-shaped frame, and a connecting plate, a fixing sleeve, an L-shaped connecting rod, an abutment plate, an L-shaped fixing frame, a wedge plate, a hinged rod, an elastic marking head and a detection abutment plate arranged in the U-shaped frame for detecting the outer wall of the pipe.

[0010] As a preferred non-destructive testing device for the outer wall of a pipe of the present invention, both ends of the rotating shaft are rotatably connected to the outer sides with a rotating frame, the rotating frame is fixedly mounted on the surface of a frame, a servo motor is arranged on one side of the frame, a second sprocket transmission group is fixed to the output shaft end of the servo motor, and the second sprocket transmission group is connected to one end of the rotating shaft.

[0011] As a preferred nondestructive testing device for the outer wall of a pipe of the present invention, a plurality of rotating shafts are evenly distributed on the surface of the frame through a plurality of rotating frames, and each two adjacent rotating shafts are connected through a first sprocket transmission group.

[0012] As a preferred embodiment of the nondestructive testing device for the outer wall of a pipe of the present invention, the rotating rack is arranged obliquely on the surface of the frame, and a plurality of the rotating racks are arranged parallel to each other.

[0013] As a preferred non-destructive testing device for the outer wall of a pipe of the present invention, a hydraulic rod is installed on the surface of the U-shaped cover, the piston end of the hydraulic rod is connected to a connecting pressure plate arranged in the U-shaped cover, an ultrasonic detector is installed on the bottom surface of one side of the connecting pressure plate, an inclined rod is fixed to the bottom surface of the connecting pressure plate, a sliding connector is slidably arranged on the outside of the inclined rod, a limiting arc plate is fixed to one end of the sliding connector, a sliding seat is slidably arranged on the outside of the sliding connector, and the sliding seat is fixedly installed in the U-shaped cover.

[0014] As a preferred non-destructive testing device for the outer wall of a pipe of the present invention, two sliding sleeves are fixedly installed on the bottom surface of the connecting pressure plate, and a spring 1 is arranged in each of the two sliding sleeves. One end of the spring 1 abuts against one end of a T-shaped connecting rod slidably connected in the sliding sleeve, one end of one of the T-shaped connecting rods is fixedly connected to a spiral scraper, and one end of the other T-shaped connecting rod is fixedly connected to a pressure plate.

[0015] As a preferred non-destructive testing device for the outer wall of a pipe of the present invention, a sliding frame is fixed to the bottom of the sliding connector, a sliding rotating frame is slidably connected inside the sliding frame, a transmission rod is rotatably connected to the surface of the sliding rotating frame, an abutment roller is fixed to the outer surface of the transmission rod, a shift rod is fixedly installed at one end of the transmission rod, an L-shaped connecting slide rod is fixed to the surface of a T-shaped connecting rod connected to the pressure plate, an L-shaped limiting slide seat is slidably connected to the outer side of the L-shaped connecting slide rod, and the L-shaped limiting slide seat is fixedly installed in the U-shaped cover.

[0016] As a preferred non-destructive testing device for the outer wall of a pipe of the present invention, a second spring is fixed in the sliding frame, one end of the second spring is connected to the sliding rotating frame, an L-shaped fixing seat is slidably provided on the outer side of the sliding frame, and the L-shaped fixing seat is fixedly installed in the U-shaped cover.

[0017] As a preferred device for non-destructive testing of the outer wall of a pipe in the present invention, a connecting plate is fixed on one side of the U-shaped frame, and the connecting plate is connected to the sliding frame. A fixing sleeve is integrally formed on the surface of the fixed shaft, and an L-shaped connecting rod is slidably connected in the fixing sleeve, and one end of the L-shaped connecting rod is connected to the detection abutment plate. A strip groove matching the L-shaped connecting rod is opened on the surface of the U-shaped frame, and an abutment plate is fixed on one end of the L-shaped connecting rod. An L-shaped fixing frame is fixed on one side of the U-shaped frame, and a wedge plate is arranged in the L-shaped fixing frame. A hinged rod is hinged on the surface of the wedge plate, and an elastic marking head is hinged on the other end of the hinged rod, and the elastic marking head is slidably connected in the L-shaped fixing frame.

[0018] As a preferred non-destructive testing device for the outer wall of a pipe of the present invention, a spring three is sleeved on the outer side of the L-shaped connecting rod, a fixing rod slides in the wedge plate, the fixing rod is fixedly installed in the L-shaped fixing frame, and a spring four is sleeved on the surface of the fixing rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0020] 1. By setting a rotating transmission component, and by using the rotating shaft, V-shaped guide roller, rotating frame and other structures in coordination, when performing non-destructive testing on the outer wall of a large-diameter pipe, the V-shaped guide roller provided with a V-shaped structure facilitates the pipe to roll to the lowest point of the V-shaped guide roller under the action of its own weight, thereby achieving the effect of self-centering of the pipe. At this time, the pipe on the surface of the V-shaped guide roller can be conveyed by the V-shaped guide roller, so that the pipe can pass through an ultrasonic detector to perform non-destructive testing on the surface of the pipe;

[0021] Multiple sets of rotating shafts and V-shaped guide rollers are arranged at an angle, so that the pipe can rotate under the action of friction during the conveying process of the multiple V-shaped guide rollers, so as to ensure that the pipe can rotate while being conveyed, so as to cooperate with the ultrasonic detector to conduct a comprehensive inspection of the outer surface of the pipe, avoid the phenomenon of missed inspection, improve the accuracy of the non-destructive inspection data of the outer wall of the pipe, and do not need to rotate the pipe manually, so as to reduce labor costs and help improve the efficiency of inspection;

[0022] The connecting pressure plate, inclined rod, sliding connection and limiting arc plate arranged in the U-shaped cover cooperate so that when the pipe is rotated and conveyed, the limiting arc plate installed at one end of the sliding connection can be pressed against the outer wall of the pipe, so as to ensure that the pipe can be limited in the process of rotating and conveying to prevent the pipe from falling off. At the same time, it can be ensured that during the transportation of the pipe, a number of balls are installed on the inner arc surface of the limiting arc plate to ensure that the rotation of the pipe is not affected, so as to ensure the smooth progress of the detection process.

[0023] 2. By setting up the detection and cleaning components, the sliding sleeve, spring 1, T-shaped connecting rod, spiral scraper and pressure plate are used in coordination, so that the spiral scraper can be against the outer surface of the pipe. When the pipe is rotating and conveying, the elastically abutting spiral scraper can scrape and clean the impurities on the surface of the pipe, ensuring the cleanliness of the outer wall of the pipe and avoiding impurities on the outer wall of the pipe, so as to improve the accuracy of the detection results;

[0024] The coordinated use of the sliding frame, transmission rod, abutment roller, lever and L-shaped connecting slide rod and other structures allows the pipe to be always against the outer wall of the pipe and rotate through the elastically arranged abutment roller of the spring while being rotated and conveyed, thereby prompting the transmission rod to drive the lever to rotate, so that the lever can intermittently push the L-shaped connecting slide rod to slide in the L-shaped limiting slide seat, so that the pressure plate can intermittently collide with the outer wall of the pipe, so as to crush the mud and impurities attached to the surface of the pipe, and cooperate with the spiral scraper to scrape off and clean the impurities on the surface of the pipe, thereby preventing dust and other debris on the outer surface of the pipe from affecting the accuracy of detection.

[0025] 3. By setting up the detection mark assembly, the U-shaped frame, the fixed shaft, the fixed sleeve, the L-shaped connecting rod, the elastic marking head and the detection plate and other structures are used in coordination, so that the detection plate set in the U-shaped frame is in contact with the outer wall of the pipe, so that the squeezed detection plate and the U-shaped frame are at the same height. During the rotating conveying process, if the outer surface protrusion of the pipe contacts the detection plate, the detection plate will be squeezed by the protrusion, and the height of the detection plate will be lower than the U-shaped frame, so that the protrusion can be effectively avoided by the elastically set detection plate, reducing the shaking of the pipe during the rotation process, which is conducive to improving the detection accuracy;

[0026] The L-shaped fixing frame is used to fix the fixing plate on the surface of the fixing rod fixed on the surface of the L-shaped fixing frame, thereby causing the spring four to be compressed. At the same time, one end of the hinged rod hinged on the surface of the wedge plate can push the elastic marking head, causing the elastic marking head to slide out from one side of the L-shaped fixing frame and contact the outer wall of the pipe, and mark the surface of the pipe, so that the processing personnel can visually observe the uneven parts, and avoid the detection personnel's mental concentration being reduced during the long detection process, resulting in failure to notice the electrical signal fluctuation diagram on the display screen, resulting in unqualified pipes flowing into qualified pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 For the present invention Figure 1 A side view structural schematic diagram of;

[0030] Figure 3 For the present invention Figure 1 A schematic diagram of the structure from a top view;

[0031] Figure 4 It is a schematic diagram of the internal partial structure of the U-shaped cover in the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the rotating frame, the rotating shaft and the V-shaped guide roller in the present invention;

[0033] Figure 6 For the present invention Figure 4 A side view structural schematic diagram of;

[0034] Figure 7 It is a schematic diagram of the structure of connecting the pressing plate, the inclined rod, the sliding seat and the limiting arc plate in the present invention;

[0035] Figure 8 It is a schematic structural diagram of the abutting roller, the pressing plate, the shifting rod and the transmission rod in the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the sliding rotating frame, the sliding frame and the transmission rod in the present invention;

[0037] Fig.10 It is a schematic diagram of the structure of the sliding sleeve, spring 1 and spiral scraper in the present invention;

[0038] Fig.11 It is a schematic diagram of the structure of the lever and the L-shaped connecting slide rod in the present invention;

[0039] Fig.12 It is a structural schematic diagram of the U-shaped frame, the connecting plate and the detection plate in the present invention;

[0040] Fig.13 It is a schematic structural diagram of the abutment plate, the fixed shaft and the fixed sleeve in the present invention;

[0041] Fig.14 It is a schematic diagram of the structure of the wedge plate, the hinged rod and the fixed rod in the present invention;

[0042] Fig.15 It is a schematic diagram of the internal partial structure of the U-shaped frame in the present invention;

[0043] Fig.16 It is a schematic diagram of the structure of the abutment plate, the L-shaped connecting rod and the fixing sleeve in the present invention;

[0044] Fig.17 It is a structural schematic diagram of the sliding connection member and the sliding frame in the present invention;

[0045] In the figure:

[0046] 1. Frame; 11. Ultrasonic detector; 12. U-shaped cover; 2. Rotating transmission assembly; 21. Rotating shaft; 22. V-shaped guide roller; 23. Rotating frame; 24. First sprocket transmission group; 25. Second sprocket transmission group; 26. Servo motor; 28. Hydraulic rod; 29. ​​Connecting plate; 210. Oblique rod; 211. Sliding connector; 212. Sliding seat; 213. Limiting arc plate; 3. Detection and cleaning assembly; 31. Sliding sleeve; 32. Spring 1; 33. T-shaped connecting rod; 34. Spiral scraper; 35. L-shaped fixing seat; 36. Sliding frame; 37. Spring two; 38. Sliding turret; 39. Transmission rod; 310. Abutment roller; 311. Pressure plate; 312. Push rod; 313. L-shaped limit slide; 314. L-shaped connecting slide; 4. Detection mark assembly; 41. Connecting plate; 42. U-shaped frame; 43. Fixed shaft; 44. Fixed sleeve; 45. Spring three; 46. L-shaped connecting rod; 47. Abutment plate; 48. L-shaped fixed frame; 49. Wedge plate; 410. Fixed rod; 411. Spring four; 412. Articulated rod; 413. Elastic marking head; 414. Detection abutment plate. DETAILED DESCRIPTION

[0047] 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.

[0048] Example: Figure 1-Figure 17 As shown, the present invention provides a technical solution, a non-destructive testing device for the outer wall of a pipe, comprising a frame 1, a U-shaped cover 12 fixed on the surface of the frame 1, and an ultrasonic detector 11 arranged above the frame 1;

[0049] A rotating transmission assembly 2 is installed on the surface of the frame 1, and the rotating transmission assembly 2 includes a rotating shaft 21, a V-shaped guide roller 22, a rotating frame 23, a first sprocket transmission group 24, a second sprocket transmission group 25, a servo motor 26, a hydraulic rod 28, a connecting plate 29, a diagonal rod 210, a sliding connection 211, a sliding seat 212 and a limiting arc plate 213;

[0050] A rotating shaft 21 is provided on the surface of the frame 1, and a V-shaped guide roller 22 is fixedly installed on the outer surface of the rotating shaft 21. A rotating frame 23 is rotatably connected to the outer sides of both ends of the rotating shaft 21, and the rotating frame 23 is fixedly installed on the surface of the frame 1. A servo motor 26 is provided on one side of the frame 1, and a second sprocket transmission group 25 is fixed on the output shaft end of the servo motor 26. The second sprocket transmission group 25 is connected to one end of the rotating shaft 21.

[0051] A plurality of rotating shafts 21 are evenly spaced on the surface of the frame 1 through a plurality of rotating frames 23 , and each two adjacent rotating shafts 21 are connected through a first sprocket transmission group 24 .

[0052] The rotating racks 23 are arranged on the surface of the frame 1 in an inclined manner, and a plurality of rotating racks 23 are arranged parallel to each other.

[0053] A hydraulic rod 28 is installed on the surface of the U-shaped cover 12, and the piston end of the hydraulic rod 28 is connected to a connecting pressure plate 29 arranged in the U-shaped cover 12. An ultrasonic detector 11 is installed on the bottom surface of one side of the connecting pressure plate 29. An inclined rod 210 is fixed to the bottom surface of the connecting pressure plate 29. A sliding connection 211 slides on the outer side of the inclined rod 210. A limiting arc plate 213 is fixed to one end of the sliding connection 211. A sliding seat 212 slides on the outer side of the sliding connection 211, and the sliding seat 212 is fixedly installed in the U-shaped cover 12.

[0054] The U-shaped cover 12 is provided with a detection and cleaning assembly 3, which includes a sleeve 31, a spring 1 32, a T-shaped connecting rod 33, a spiral scraper 34, an L-shaped fixed seat 35, a sliding frame 36, a spring 2 37, a sliding rotating frame 38, a transmission rod 39, an abutting roller 310, a pressing plate 311, a lever 312, an L-shaped limiting sliding seat 313, and an L-shaped connecting sliding rod 314;

[0055] Two sliding sleeves 31 are fixedly installed on the bottom surface of the connecting pressure plate 29, and a spring 32 is provided in each of the two sliding sleeves 31. One end of the spring 32 abuts against one end of a T-shaped connecting rod 33 slidably connected in the sliding sleeve 31, one end of one of the T-shaped connecting rods 33 is fixedly connected to a spiral scraper 34, and one end of the other T-shaped connecting rod 33 is fixedly connected to a pressure plate 311.

[0056] A sliding frame 36 is fixed to the bottom of the sliding connector 211, and a sliding rotating frame 38 is slidably connected inside the sliding frame 36. A transmission rod 39 is rotatably connected to the surface of the sliding rotating frame 38. A contact roller 310 is fixed to the outer surface of the transmission rod 39. A shift rod 312 is fixedly installed at one end of the transmission rod 39. An L-shaped connecting slide 314 is fixed to the surface of a T-shaped connecting rod 33 connected to the pressure plate 311. An L-shaped limiting slide 313 is slidably connected to the outer side of the L-shaped connecting slide 314. The L-shaped limiting slide 313 is fixedly installed in the U-shaped cover 12.

[0057] A second spring 37 is fixed inside the sliding frame 36 , and one end of the second spring 37 is connected to the sliding rotating frame 38 . An L-shaped fixing seat 35 is slidably arranged outside the sliding frame 36 , and the L-shaped fixing seat 35 is fixed and installed in the U-shaped cover 12 .

[0058] A detection mark assembly 4 is arranged in the U-shaped cover 12, and the detection mark assembly 4 includes a connecting plate 41, a U-shaped frame 42, a fixed shaft 43, a fixed sleeve 44, a spring three 45, an L-shaped connecting rod 46, an abutment plate 47, an L-shaped fixing frame 48, a wedge plate 49, a fixing rod 410, a spring four 411, a hinge rod 412, an elastic marking head 413 and a detection abutment plate 414;

[0059] A U-shaped frame 42 is provided in the U-shaped cover 12, and a fixed shaft 43 is fixed in the U-shaped frame 42. A connecting plate 41 is fixed on one side of the U-shaped frame 42, and the connecting plate 41 is connected to the sliding frame 36. A fixing sleeve 44 is integrally formed on the surface of the fixed shaft 43, and an L-shaped connecting rod 46 is slidably connected in the fixing sleeve 44, and one end of the L-shaped connecting rod 46 is connected to the detection abutment plate 414. A strip groove matching the L-shaped connecting rod 46 is provided on the surface of the U-shaped frame 42, and an abutment plate 47 is fixed on one end of the L-shaped connecting rod 46. An L-shaped fixing frame 48 is fixed on one side of the U-shaped frame 42, and a wedge plate 49 is provided in the L-shaped fixing frame 48. A hinged rod 412 is hinged on the surface of the wedge plate 49, and an elastic marking head 413 is hinged on the other end of the hinged rod 412, and the elastic marking head 413 is slidably connected in the L-shaped fixing frame 48.

[0060] A spring 45 is sleeved on the outer side of the L-shaped connecting rod 46, a fixing rod 410 is slidably disposed in the wedge plate 49, the fixing rod 410 is fixedly installed in the L-shaped fixing frame 48, and a spring 411 is sleeved on the surface of the fixing rod 410.

[0061] The working principle and use process of the present invention are as follows: when performing nondestructive testing on the outer wall of a large-diameter pipe, firstly, a lifting device is used to place the pipe in a V-shaped guide roller 22, and the servo motor 26 is controlled to start, and the second sprocket transmission group 25 installed on the output shaft end of the servo motor 26 is used in cooperation, so that the rotating shaft 21 drives the V-shaped guide roller 22 to rotate. The V-shaped guide roller 22 with a V-shaped structure is convenient for the pipe to roll to the lowest point of the V-shaped guide roller 22 under the action of its own weight, so as to achieve the effect of automatic centering of the pipe. At this time, the pipe on the surface of the V-shaped guide roller 22 can be transported by the V-shaped guide roller 22, so that the pipe can pass through the ultrasonic detector 11 to perform nondestructive testing on the surface of the pipe;

[0062] The multiple groups of rotating shafts 21 and the V-shaped guide rollers 22 are arranged at an angle, so that the pipe can rotate under the action of friction during the transportation process of the multiple V-shaped guide rollers 22, so as to ensure that the pipe can rotate while being transported, so as to cooperate with the ultrasonic detector 11 to perform a comprehensive inspection on the outer surface of the pipe, avoid the phenomenon of missed inspection, improve the accuracy of the non-destructive inspection data of the outer wall of the pipe, and do not need to rotate the pipe manually, so as to reduce labor costs and help improve the efficiency of inspection;

[0063] When the pipe is conveyed into the U-shaped cover 12, the connecting plate 29 can be moved downward by controlling the hydraulic rod 28, so that the inclined rod 210 installed on the bottom surface of the connecting plate 29 slides in the inclined hole opened on the surface of the sliding connector 211, so that the sliding connector 211 can slide in the slide seat 212, and the limiting arc plate 213 installed at one end of the sliding connector 211 abuts against the outer wall of the pipe, so as to ensure that the pipe can be limited in the process of rotating and conveying to prevent the pipe from detaching. At the same time, it can be ensured that during the conveying process of the pipe, a number of balls are installed on the inner arc surface of the limiting arc plate 213 to ensure that the rotation of the pipe is not affected, so as to ensure the smooth progress of the detection process;

[0064] When the connecting plate 29 moves downward, the sliding sleeve 31 fixed on the bottom surface of the connecting plate 29 can move downward, and the spiral scraper 34 elastically connected to the bottom end of the T-shaped connecting rod 33 through the spring 1 32 can move downward accordingly, and the spiral scraper 34 can abut against the outer surface of the pipe. During the rotating conveying process of the pipe, the elastically abutting spiral scraper 34 can scrape and clean the impurities on the surface of the pipe, thereby ensuring the cleanliness of the outer wall of the pipe and avoiding impurities on the outer wall of the pipe, so as to improve the accuracy of the detection result.

[0065] When the sliding connector 211 slides, the sliding frame 36 fixed at the bottom of the sliding connector 211 can move along with it. At this time, the abutting roller 310 connected to the outer side of the sliding rotating frame 38 in the sliding frame 36 through the transmission rod 39 can move along with it. At this time, the abutting roller 310 can abut against the outer surface of the pipe. When the pipe is rotated and conveyed, the abutting roller 310 elastically set by the spring 2 37 can always abut against the outer wall of the pipe and rotate, thereby prompting the transmission rod 39 to drive the lever 312 to rotate, so that the lever 312 can intermittently push the L-shaped connecting slide bar 314 to slide in the L-shaped limit slide seat 313, thereby The pressing plate 311 is pressed against the outer wall of the pipe and the pressing plate 312 is pressed against the outer wall of the pipe. ...

[0066] When the sliding frame 36 slides, it can make the connecting plate 41 connected thereto move along, and make the U-shaped frame 42 connected to one side of the connecting plate 41 move along, until the detection plate 414 set in the U-shaped frame 42 abuts against the outer wall of the pipe, so that the squeezed detection plate 414 and the U-shaped frame 42 are at the same height. During the rotating conveying process, if the outer surface protrusion of the pipe contacts the detection plate 414, the detection plate 414 will be squeezed by the protrusion, and the height of the detection plate 414 will be lower than the U-shaped frame 42, so that the protrusion can be effectively avoided by the elastically set detection plate 414, reducing the shaking of the pipe during the rotation process, which is conducive to improving the detection accuracy.

[0067] When the detection abutment plate 414 slides into the U-shaped frame 42, the provided spring three 45 can be compressed, and the abutment plate 47 at one end of the L-shaped connecting rod 46 can be in contact with the wedge plate 49, and push the wedge plate 49 to slide to one side on the surface of the fixing rod 410 fixedly installed on the surface of the L-shaped fixing frame 48, causing the spring four 411 to be compressed. At the same time, one end of the hinged rod 412 hinged on the surface of the wedge plate 49 can push the elastic marking head 413, causing the elastic marking head 413 to slide out from one side of the L-shaped fixing frame 48 and contact the outer wall of the pipe, and mark the surface of the pipe, so as to facilitate the processing personnel to intuitively observe the uneven parts, and avoid the detection personnel's mental concentration being reduced during the long detection process, resulting in failure to notice the electrical signal fluctuation diagram on the display screen, resulting in unqualified pipes flowing into qualified pipes.

[0068] It should be noted that a telescopic guide rod is installed on the surface of the connecting pressure plate 29, one end of which is fixed to the inner top surface of the U-shaped cover 12, and its main function is to provide guiding support.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-destructive testing device for the outer wall of a pipe, comprising a frame (1), a U-shaped cover (12) fixed to the surface of the frame (1), and an ultrasonic detector (11) arranged above the frame (1); Features: A rotating transmission assembly (2) is installed on the surface of the frame (1), and the rotating transmission assembly (2) comprises a rotating shaft (21) arranged on the surface of the frame (1), a V-shaped guide roller (22) fixedly installed on the outer surface of the rotating shaft (21), a rotating frame (23) for controlling the rotation of the V-shaped guide roller (22) to realize rotating conveying of the pipe, a second sprocket transmission group (25) and a servo motor (26); A detection and cleaning assembly (3) is installed in the U-shaped cover (12), and the detection and cleaning assembly (3) comprises a sliding sleeve (31) arranged in the U-shaped cover (12), a spiral scraper (34) arranged below the sliding sleeve (31), a spring (32) for controlling the spiral scraper (34) to abut against the outer wall of the pipe, a T-shaped connecting rod (33) and a pressing plate (311); A detection mark assembly (4) is arranged in the U-shaped cover (12), and the detection mark assembly (4) comprises a U-shaped frame (42) arranged in the U-shaped cover (12), a fixed shaft (43) fixed in the U-shaped frame (42), and a connecting plate (41) arranged in the U-shaped frame (42) for detecting the outer wall of the pipe, a fixing sleeve (44), an L-shaped connecting rod (46), an abutment plate (47), an L-shaped fixing frame (48), a wedge plate (49), a hinged rod (412), an elastic marking head (413) and a detection abutment plate (414).

2. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: The outer sides of both ends of the rotating shaft (21) are rotatably connected to a rotating frame (23), the rotating frame (23) is fixedly mounted on the surface of the frame (1), a servo motor (26) is arranged on one side of the frame (1), a second sprocket transmission group (25) is fixed to the output shaft end of the servo motor (26), and the second sprocket transmission group (25) is connected to one end of the rotating shaft (21).

3. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: A plurality of rotating shafts (21) are evenly spaced and distributed on the surface of the frame (1) via a plurality of rotating frames (23), and each two adjacent rotating shafts (21) are connected via a first sprocket transmission group (24).

4. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: The rotating rack (23) is arranged on the surface of the frame (1) in an inclined manner, and a plurality of the rotating racks (23) are arranged parallel to each other.

5. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: A hydraulic rod (28) is installed on the surface of the U-shaped cover (12), and the piston end of the hydraulic rod (28) is connected to a connecting pressure plate (29) arranged in the U-shaped cover (12). An ultrasonic detector (11) is installed on the bottom surface of one side of the connecting pressure plate (29). An inclined rod (210) is fixed to the bottom surface of the connecting pressure plate (29). A sliding connection member (211) slides on the outer side of the inclined rod (210), and a limiting arc plate (213) is fixed at one end of the sliding connection member (211). A sliding seat (212) slides on the outer side of the sliding connection member (211), and the sliding seat (212) is fixedly installed in the U-shaped cover (12).

6. The nondestructive testing device for the outer wall of a pipe according to claim 5, characterized in that: Two sliding sleeves (31) are fixedly installed on the bottom surface of the connecting pressure plate (29), and a spring (32) is arranged in each of the two sliding sleeves (31). One end of the spring (32) abuts against one end of a T-shaped connecting rod (33) slidably connected in the sliding sleeve (31), one end of one of the T-shaped connecting rods (33) is fixedly connected to a spiral scraper (34), and one end of the other T-shaped connecting rod (33) is fixedly connected to a pressure plate (311).

7. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: A sliding frame (36) is fixed at the bottom of the sliding connection member (211), a sliding rotating frame (38) is slidably connected inside the sliding frame (36), a transmission rod (39) is rotatably connected to the surface of the sliding rotating frame (38), an abutment roller (310) is fixed to the outer surface of the transmission rod (39), a shifting rod (312) is fixedly installed at one end of the transmission rod (39), an L-shaped connecting slide rod (314) is fixed to the surface of a T-shaped connecting rod (33) connected to the pressure plate (311), an L-shaped limiting slide seat (313) is slidably connected to the outer side of the L-shaped connecting slide rod (314), and the L-shaped limiting slide seat (313) is fixedly installed in the U-shaped cover (12).

8. The nondestructive testing device for the outer wall of a pipe according to claim 7, characterized in that: A second spring (37) is fixed inside the sliding frame (36), one end of which is connected to a sliding rotating frame (38). An L-shaped fixing seat (35) is slidably provided on the outer side of the sliding frame (36), and the L-shaped fixing seat (35) is fixedly installed in the U-shaped cover (12).

9. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: A connecting plate (41) is fixed to one side of the U-shaped frame (42), and the connecting plate (41) is connected to the sliding frame (36). A fixing sleeve (44) is integrally formed on the surface of the fixing shaft (43), and an L-shaped connecting rod (46) is slidably connected in the fixing sleeve (44). One end of the L-shaped connecting rod (46) is connected to the detection plate (414). A strip-shaped connecting rod (46) is provided on the surface of the U-shaped frame (42) to match the L-shaped connecting rod (46). A contact plate (47) is fixed to one end of the L-shaped connecting rod (46), an L-shaped fixing frame (48) is fixed to one side of the U-shaped frame (42), a wedge plate (49) is arranged in the L-shaped fixing frame (48), a hinge rod (412) is hinged on the surface of the wedge plate (49), an elastic marking head (413) is hinged on the other end of the hinge rod (412), and the elastic marking head (413) is slidably connected in the L-shaped fixing frame (48).

10. The nondestructive testing device for the outer wall of a pipe according to claim 1, characterized in that: A spring three (45) is sleeved on the outer side of the L-shaped connecting rod (46), a fixing rod (410) is slidably disposed in the wedge plate (49), the fixing rod (410) is fixedly installed in the L-shaped fixing frame (48), and a spring four (411) is sleeved on the surface of the fixing rod (410).

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