X-ray flaw detection system

Abstract

The utility model relates to the technical field of X-ray tubes, and provides an X-ray flaw detection system which comprises the following steps: S1, determining a detection starting point and a detection ending point; s2, the carrying vehicle is moved into a high-speed rail vehicle body; s3, calibrating the current positions of the X-ray emitter and the X-ray detection band; s4, starting at least three X-ray emitters and X-ray detection bands; s5, enabling the carrying vehicle to linearly move to a detection termination point in the length direction of the high-speed rail vehicle body, and enabling the portal frame to linearly move to the detection termination point in the length direction of the high-speed rail vehicle body; s6, the X-ray detection belt sends defect detection information to an image processing system; s7, the image processing system converts the defect detection information into defect image information; and S8, a defect marking mechanism scribbles a defect icon on the outer surface of the high-speed rail vehicle body. According to the utility model, the top wall and the two side walls of the high-speed rail vehicle body which stops on the rail can be efficiently and accurately detected at one time.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray tubes, in particular to an X-ray flaw detection system. Background Art

[0002] High-speed train bodies are usually made of thin-walled cylindrical structures made of aluminum alloy profiles, and a large number of welds are formed during the manufacturing process. These welds are easily damaged and defective during the operation of the vehicle due to their own tension and the influence of external environments such as rain, hail, and dust.

[0003] At present, ultrasonic testing or contact testing is usually used to detect on-orbit vehicles. These two methods have low detection sensitivity for small defects, resulting in poor defect detection capabilities and low reliability of detection results obtained by existing technologies.

[0004] In addition, when the existing technology detects on-rail vehicles, it is necessary to first clean the surface of the high-speed rail body and apply coupling liquid, and then use ultrasound to detect defects on the cleaned high-speed rail body surface, which has the problem of low detection efficiency.

[0005] The existing patent document (application number: CN202311044285.4) discloses a vehicle sheet metal surface defect detection device and detection system, which is applied to stamped sheet metal parts of automobiles, especially sheet metal parts with complex curved surfaces, and is not suitable for high-speed rail bodies.

[0006] The existing patent document (application number: CN201620868441.8) discloses a metal tube defect detection device. Although it uses a ray emitter for detection, it has some disadvantages: First, the object to be detected is a metal tube. Since the specifications of the metal tube are very different from those of the high-speed rail body, the metal tube defect detection device cannot be applied to the detection of the high-speed rail body. Second, two tracks must be laid on site, one track for the feeding device and the other track for the gantry, which is very troublesome to operate. In addition, laying tracks is often constrained by geographical factors and is difficult to implement.

[0007] The existing patent document (application number: CN202021868442.5) discloses an online X-ray nondestructive testing device for conductive pipes. Although it also uses an X-ray nondestructive transmitter for detection, it also has some disadvantages: First, the object to be detected is a conductive pipe sample. Since the specifications of the conductive pipe sample are very different from those of the high-speed rail body, the online X-ray nondestructive testing device for conductive pipes cannot be applied to the detection of high-speed rail bodies. Second, it is necessary to build a track for the conductive pipe samples and a powered trolley for holding the materials running on the track, which is also more troublesome to operate. Third, the X-ray nondestructive transmitter is located on the outside of the conductive pipe sample. It is necessary to rotate the conductive pipe sample while irradiating the local structure of the conductive pipe sample through the X-ray nondestructive transmitter, and the detection efficiency is relatively low. Utility Model Content

[0008] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the utility model is to provide an X-ray flaw detection system that can efficiently and accurately complete the inspection operation of the top wall and two side walls of the high-speed rail body stopped on track at one time, and facilitate the staff to find and repair the defective parts of the high-speed rail body.

[0009] In order to solve the above technical problems, the utility model provides an X-ray flaw detection system, comprising:

[0010] Control systems;

[0011] A loading vehicle is arranged inside a high-speed railway body, the loading vehicle comprises a loading platform and a running mechanism arranged at the bottom of the loading platform, and the running mechanism is communicatively connected to a control system;

[0012] An X-ray emitting device, the X-ray emitting device comprises at least three X-ray emitters, each of which is communicatively connected to a control system, each of which comprises a telescopic support arranged on a carrying platform and a emitting head arranged on the top of the telescopic support, the emitting head being provided with an elongated emitting window, and the X-ray emitter is used to irradiate the top wall or side wall of a high-speed railway body;

[0013] An X-ray detection device, which includes two straight guide rails, a gantry, a sliding drive mechanism and an X-ray detection belt. The straight guide rails extend in a straight line along the length direction of the high-speed rail body. The two uprights of the gantry are respectively slidably arranged on the two straight guide rails. The sliding drive mechanism is transmission-connected to the gantry to drive the gantry to move along the straight guide rails. The extended shape of the X-ray detection belt is adapted to the shape of the gantry and the frame. The X-ray detection belt is arranged on the inner side of the gantry to receive X-rays emitted by the X-ray transmitter. The X-ray detection belt and the sliding drive mechanism are both communicatively connected to the control system.

[0014] An image processing system, the image processing system is communicatively connected to the control system to analyze defect detection information of the X-ray detection belt and convert the defect detection information into defect image information;

[0015] A defect marking mechanism, the defect marking mechanism is movably arranged on the gantry, and the defect marking mechanism is communicatively connected to the control system to write a defect icon on the outer surface of the high-speed rail body according to the defect image information;

[0016] Furthermore, the defect marking mechanism includes an inverted U-shaped guide rail and multiple marking robots. The extended shape of the inverted U-shaped guide rail is compatible with the shape of the gantry and the frame. The inverted U-shaped guide rail is fixedly arranged on the gantry, and all marking robots can be slidably arranged on the inverted U-shaped guide rail.

[0017] Furthermore, the marking robot includes a base slidably arranged on an inverted U-shaped guide rail, a telescopic arm arranged on the base, and a marking working end arranged at the end of the telescopic arm.

[0018] Furthermore, the X-ray detection belt is fixed to the gantry through a plurality of connecting columns.

[0019] As described above, the X-ray flaw detection system of the utility model has the following beneficial effects:

[0020] In the X-ray flaw detection system of the present invention, the control system is an existing structure and will not be described in detail. The control system mainly plays the role of information interaction and information processing. The carrying vehicle is used to be placed inside the high-speed rail body. Under the control of the control system, it can move linearly along the length direction of the high-speed rail body; the carrying platform is used to install the X-ray transmitting device. The number of X-ray emitters is at least three. Exemplarily, the X-ray transmitting device includes three X-ray emitters arranged side by side in sequence along the width direction of the high-speed rail body, respectively recorded as X-ray emitter No. 1, X-ray emitter No. 2 and X-ray emitter No. 3, X-ray emitter No. 2 is used to irradiate the top wall of the high-speed rail body, and X-ray emitter No. 1 and X-ray emitter No. 3 are used to irradiate the two side walls of the high-speed rail body respectively. Since the emission window is in the shape of a long strip, the emitted X-rays are diffused. Since the height of the telescopic support can be raised or lowered, the area irradiated by the transmitter head on the high-speed rail body will change. In order to receive X-rays emitted by at least three X-ray emitters and make the X-ray detection belt move synchronously with the carrier, the straight guide rail extends straightly along the length direction of the high-speed rail body, the two columns of the gantry are respectively slidably set on the two straight guide rails, the sliding drive mechanism is connected to the gantry to drive the gantry to move along the straight guide rail, the extended shape of the X-ray detection belt is adapted to the shape of the gantry and the frame, and the X-ray detection belt is arranged on the inner side of the gantry to receive the X-rays emitted by the X-ray emitter. The X-ray detection belt is an existing structure and will not be repeated. The image processing system is an existing structure and will not be repeated, which mainly includes image processing hardware or image processing software. The image processing system is connected to the control system in communication to analyze the defect detection information of the X-ray detection belt and convert the defect detection information into defect image information. Finally, in order to facilitate the staff to quickly find the defective part of the high-speed rail body. The defect marking mechanism is movably arranged on the gantry, so that under the drive of the gantry, the defect marking mechanism can move to the vicinity of the defective part, and then write the defect icon on the outer surface of the high-speed rail body according to the defect image information. Therefore, the X-ray flaw detection system of the utility model can efficiently and accurately complete the detection operation of the top wall and two side walls of the high-speed rail body stopped on the track at one time, and it is convenient for the staff to find and repair the defective parts of the high-speed rail body.

[0021] In the defect detection method of the present invention, S1, determining the detection starting point and the detection ending point of the high-speed rail body, the part between the detection starting point and the detection ending point can be the entire high-speed rail body or a section of the high-speed rail body; S2, moving the carrier vehicle to the interior of the high-speed rail body; laying two straight guide rails on both sides of the high-speed rail body in the width direction, and erecting the gantry across the high-speed rail body, so that the X-ray detection belt can receive all X-rays that pass through the high-speed rail body; S3, calibrating the current positions of the X-ray emitter and the X-ray detection belt so that the X-ray emitter and the X-ray detection belt can be aligned with each other. The linear detection belts are all located on the cross section of the high-speed rail body passing through the detection starting point, which is a key step for the synchronous movement of the carrying vehicle and the gantry, that is, a key step for the synchronous operation of at least three X-ray emitters and the X-ray detection belts; the carrying vehicle can travel at a constant speed, a variable speed or intermittently, as long as the carrying vehicle and the gantry move synchronously; S4, start at least three X-ray emitters to emit fan-shaped X-rays toward the top wall and two side walls of the high-speed rail body respectively, and the irradiation areas of two adjacent X-ray emitters on the high-speed rail body are connected or overlapped with each other; start the X-ray detection belt so that the X-ray detection belt is connected The X-rays that have passed through the high-speed rail body and carry the body defect information are collected; S5, the travel mechanism is started to make the carrying vehicle move linearly along the length direction of the high-speed rail body to the detection end point, and the sliding drive mechanism is started to make the gantry move linearly along the length direction of the high-speed rail body to the detection end point; during this period, the travel speed of the carrying vehicle is equal to the moving speed of the gantry, so that the X-ray emitter and the X-ray detection belt are always located on the same cross-section of the high-speed rail body; S6, the X-ray detection belt sends the defect detection information to the image processing system; specifically, since the defective part of the high-speed rail body is different from the normal part of the high-speed rail body in density, the X-ray intensity passing through the defective part is different from the X-ray intensity passing through the normal part, and the X-ray detection belt transmits the defect detection information corresponding to the X-rays of different intensities to the image processing system through the control system; S7, the image processing system converts the defect detection information into defect image information and presents it on a display screen in the form of a 3D image; S8, based on the defect image information, driven by the gantry, the defect marking mechanism writes the defect icon on the outer surface of the high-speed rail body; this makes it easy for the staff to quickly find the defective part on the outer surface of the high-speed rail body. The defect marking mechanism can use a manipulator, or can use different marking forms to characterize the severity of the defect, so that the staff can carry out corresponding maintenance and processing work. Therefore, the defect detection method for static high-speed rail body of the utility model can efficiently and accurately complete the detection operation of the top wall and two side walls of the high-speed rail body stopped on the track at one time, and it is convenient for the staff to find and repair the defective parts of the high-speed rail body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Shown is a three-dimensional schematic diagram of the X-ray flaw detection system of the present invention when inspecting a high-speed railway body.

[0023] Figure 2 Shown is a schematic diagram of the main view of the X-ray flaw detection system of the present invention when inspecting a high-speed railway body.

[0024] Figure 3 Shown is a schematic diagram of the connection of the gantry, X-ray detection belt and defect marking mechanism.

[0025] Figure 4 Display as Figure 3 Enlarged view of part A.

[0026] Figure 5 Shown is a schematic diagram of the connection between the carrier vehicle and the X-ray emission device.

[0027] Component number explanation: control system 1, carrying vehicle 2, carrying platform 21, traveling mechanism 22, X-ray emitting device 3, X-ray emitter 31, telescopic support 311, emission head 312, emission window 313, X-ray detection device 4, straight guide rail 41, gantry 42, column 421, sliding drive mechanism 43, X-ray detection belt 44, connecting column 45, image processing system 5, defect marking mechanism 6, inverted U-shaped guide rail 61, marking robot 62, base 621, telescopic arm 622, marking working end 623, high-speed rail body 7, top wall 71, side wall 72. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0030] exist Figure 1In the figure, the X-axis direction represents the width direction of the high-speed rail body 7, the Y-axis direction represents the length direction of the high-speed rail body 7, and the Z-axis direction represents the height direction of the high-speed rail body 7; the non-solid straight arrow represents the driving direction of the carrying vehicle 2.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the utility model provides an X-ray flaw detection system, comprising:

[0032] Control system 1;

[0033] A loading vehicle 2 is arranged inside a high-speed railway body 7, the loading vehicle 2 comprises a loading platform 21 and a running mechanism 22 arranged at the bottom of the loading platform 21, and the running mechanism 22 is communicatively connected to the control system 1;

[0034] An X-ray emitting device 3, the X-ray emitting device 3 includes at least three X-ray emitters 31, each X-ray emitter 31 is communicatively connected to the control system 1, each X-ray emitter 31 includes a telescopic support 311 disposed on the carrying platform 21 and a transmitter head 312 disposed on the top of the telescopic support 311, and a long strip-shaped emission window 313 is provided on the transmitter head 312, and the X-ray emitter 31 is used to irradiate the top wall 71 or the side wall 72 of the high-speed railway body 7;

[0035] An X-ray detection device 4, the X-ray detection device 4 comprises two straight guide rails 41, a gantry 42, a sliding drive mechanism 43 and an X-ray detection belt 44, the straight guide rails 41 extend straightly along the length direction of the high-speed railway body 7, two uprights 421 of the gantry 42 are respectively slidably arranged on the two straight guide rails 41, the sliding drive mechanism 43 is transmission-connected to the gantry 42 to drive the gantry 42 to move along the straight guide rails 41, the extended shape of the X-ray detection belt 44 is adapted to the shape of the gantry 42 and the frame, the X-ray detection belt 44 is arranged on the inner side of the gantry 42 to receive the X-rays emitted by the X-ray emitter 31, and the X-ray detection belt 44 and the sliding drive mechanism 43 are both communicatively connected to the control system 1;

[0036] An image processing system 5, the image processing system 5 is communicatively connected to the control system 1 to analyze the defect detection information of the X-ray detection belt 44 and convert the defect detection information into defect image information;

[0037] A defect marking mechanism 6, the defect marking mechanism 6 is movably arranged on the gantry 42, and the defect marking mechanism 6 is communicatively connected to the control system 1 to write a defect icon on the outer surface of the high-speed rail body 7 according to the defect image information;

[0038] The utility model also provides a defect detection method for a static high-speed rail body, comprising the following steps:

[0039] S1, determining the detection starting point and detection ending point of the high-speed rail body 7;

[0040] S2, move the carrier 2 to the interior of the high-speed rail body 7; lay two straight guide rails 41 on both sides of the high-speed rail body 7 in the width direction, and erect the gantry 42 across the high-speed rail body 7;

[0041] S3, calibrating the current positions of the X-ray emitter 31 and the X-ray detection belt 44 so that both the X-ray emitter 31 and the X-ray detection belt 44 are located on the cross section of the high-speed railway body 7 passing through the detection starting point;

[0042] S4, start at least three X-ray emitters 31 to emit fan-shaped X-rays toward the top wall 71 and the two side walls 72 of the high-speed rail body 7 respectively, and the irradiation areas of two adjacent X-ray emitters 31 on the high-speed rail body 7 are connected or overlapped with each other; start the X-ray detection belt 44 so that the X-ray detection belt 44 receives the X-rays that have passed through the high-speed rail body 7 and carry the body defect information;

[0043] S5, start the travel mechanism 22 to make the carrying vehicle 2 move linearly along the length direction of the high-speed rail body 7 to the detection end point, and start the sliding drive mechanism 43 to make the gantry 42 move linearly along the length direction of the high-speed rail body 7 to the detection end point; during this period, the travel speed of the carrying vehicle 2 is equal to the moving speed of the gantry 42, so that the X-ray emitter 31 and the X-ray detection belt 44 are always located on the same cross section of the high-speed rail body 7;

[0044] S6, the X-ray detection belt 44 sends the defect detection information to the image processing system 5;

[0045] S7, the image processing system 5 converts the defect detection information into defect image information and presents it on a display screen in the form of a 3D image;

[0046] S8, based on the defect image information, driven by the gantry 42, the defect marking mechanism 6 writes the defect icon on the outer surface of the high-speed railway body 7.

[0047] In the X-ray flaw detection system of the present invention, the control system 1 is an existing structure and will not be described in detail. The control system 1 mainly plays the role of information interaction and information processing. The carrying vehicle 2 is used to be placed inside the high-speed rail body 7. Under the control of the control system 1, it can move linearly along the length direction of the high-speed rail body 7; the carrying platform 21 is used to install the X-ray emission device 3. The number of X-ray emitters 31 is at least three. Only three X-ray emitters 31 are shown in the drawings of the specification. The radiation angles can cover the top wall 71 and / or the side wall 72, and the radiation angles corresponding to different X-ray emitters 31 overlap. In fact, there can be N X-ray emitters 31, and n (n≤N) of the X-ray emitters 31 can be used each time, as long as the radiation angles of these n X-ray emitters 31 can cover the top wall 71 and the two side walls 72. In extreme cases, N can be hundreds, and dozens of X-ray emitters 31 are emitted at the same time each time, and hundreds of X-ray emitters 31 are emitted in turn according to dozens each time. That is to say, for the same defective part, defect detection information can be obtained from different angles, and then reconstructed by existing software. Exemplarily, the X-ray emitting device 3 includes three X-ray emitters 31 arranged in sequence along the width direction of the high-speed rail body 7, which are respectively recorded as the No. 1 X-ray emitter 31, the No. 2 X-ray emitter 31 and the No. 3 X-ray emitter 31. The No. 2 X-ray emitter 31 is used to irradiate the top wall 71 of the high-speed rail body 7, and the No. 1 X-ray emitter 31 and the No. 3 X-ray emitter 31 are used to irradiate the two side walls 72 of the high-speed rail body 7 respectively. Since the emission window 313 is in the shape of a long strip, the emitted X-rays are diffuse. Since the height of the telescopic support 311 can be raised or lowered, the area irradiated by the emission head 312 on the high-speed rail body 7 will change. Preferably, the No. 1 X-ray emitter 31 and the No. 3 X-ray emitter 31 are symmetrically arranged on the opposite sides of the No. 2 X-ray emitter 31. In order to receive X-rays emitted by at least three X-ray emitters 31 and make the X-ray detection belt 44 move synchronously with the carrier vehicle 2, the straight guide rail 41 extends linearly along the length direction of the high-speed rail body 7, the two columns 421 of the gantry 42 are respectively slidably arranged on the two straight guide rails 41, the sliding drive mechanism 43 is transmission-connected to the gantry 42 to drive the gantry 42 to move along the straight guide rails 41, the extended shape of the X-ray detection belt 44 is adapted to the shape of the gantry 42 and the frame, and the X-ray detection belt 44 is arranged on the inner side of the gantry 42 to receive the X-rays emitted by the X-ray emitter 31. The X-ray detection belt 44 is an existing structure and will not be described in detail. Its general structure is: the X-ray detection belt 44 has X-ray detection units closely arranged along the extension direction of the X-ray detection belt 44. The image processing system 5 is an existing structure and will not be described in detail, which mainly includes image processing hardware or image processing software.The image processing system 5 is communicatively connected to the control system 1 to analyze the defect detection information of the X-ray detection belt 44 and convert the defect detection information into defect image information. The defect image information can be a 3D model with different colors, such as red for defective parts and green for non-defective parts. Finally, in order to facilitate the staff to quickly find the defective parts of the high-speed rail body 7. The defect marking mechanism 6 is movably arranged on the gantry 42, so that under the drive of the gantry 42, the defect marking mechanism 6 can move to the vicinity of the defective part, and then write the defect icon on the outer surface of the high-speed rail body 7 according to the defect image information. Therefore, the X-ray flaw detection system of the utility model can efficiently and accurately complete the detection operation of the top wall and two side walls of the high-speed rail body 7 stopped on the track at one time, and it is convenient for the staff to find and repair the defective parts of the high-speed rail body 7.

[0048] In the defect detection method for a static high-speed rail body of the present invention, S1, determining a detection starting point and a detection ending point of the high-speed rail body 7, the portion between the detection starting point and the detection ending point may be the entire high-speed rail body 7, or may be a section of the high-speed rail body 7;

[0049] S2, move the carrier 2 to the interior of the high-speed rail body 7; lay two straight guide rails 41 on both sides of the high-speed rail body 7 in the width direction, and install the gantry 42 across the high-speed rail body 7, so that the X-ray detection belt 44 can receive all X-rays that pass through the high-speed rail body 7;

[0050] S3, calibrate the current position of the X-ray emitter 31 and the X-ray detection belt 44, so that the X-ray emitter 31 and the X-ray detection belt 44 are both located on the cross section of the high-speed rail body 7 passing through the detection starting point. This is a key step for the synchronous movement of the vehicle 2 and the gantry 42, that is, a key step for the synchronous operation of at least three X-ray emitters 31 and the X-ray detection belt 44; the vehicle 2 can travel at a constant speed, variable speed or intermittently, as long as the vehicle 2 and the gantry 42 move synchronously. Exemplarily, since the defects of the high-speed rail body 7 usually appear at the welds of the high-speed rail body 7, when inspecting the welds of the high-speed rail body 7, the speed of the vehicle 2 can be slightly slower, or even stopped, so as to obtain enough X-rays carrying defect signals to improve the detection sensitivity, resolution and detection reliability. When inspecting the non-weld parts of the high-speed rail body 7, the speed of the vehicle 2 can be slightly faster, so as to improve the defect detection efficiency of the entire high-speed rail body 7.

[0051] S4, start at least three X-ray emitters 31 to emit fan-shaped X-rays toward the top wall 71 and the two side walls 72 of the high-speed rail body 7 respectively, and the irradiation areas of two adjacent X-ray emitters 31 on the high-speed rail body 7 are connected or overlapped with each other; start the X-ray detection belt 44 so that the X-ray detection belt 44 receives the X-rays that have passed through the high-speed rail body 7 and carry the body defect information; for example, the angle corresponding to the diffuse X-ray emitted by the No. 2 X-ray emitter 31 is 77 degrees, and the angle corresponding to the diffuse X-ray emitted by the No. 1 X-ray emitter 31 and the No. 3 X-ray emitter 31 is 104 degrees;

[0052] S5, start the travel mechanism 22 to make the carrying vehicle 2 move linearly along the length direction of the high-speed rail body 7 to the detection end point, and start the sliding drive mechanism 43 to make the gantry 42 move linearly along the length direction of the high-speed rail body 7 to the detection end point; during this period, the travel speed of the carrying vehicle 2 is equal to the moving speed of the gantry 42, so that the X-ray emitter 31 and the X-ray detection belt 44 are always located on the same cross section of the high-speed rail body 7;

[0053] S6, the X-ray detection belt 44 sends the defect detection information to the image processing system 5; specifically, since the defective part of the high-speed rail body 7 is different from the normal part of the high-speed rail body 7 in terms of density, the intensity of the X-rays passing through the defective part is different from the intensity of the X-rays passing through the normal part, and the X-ray detection belt 44 transmits the defect detection information corresponding to the X-rays with different intensities to the image processing system 5 through the control system 1;

[0054] S7, the image processing system 5 converts the defect detection information into defect image information and presents it on a display screen in the form of a 3D image; for example, a 3D model that is proportionally reduced to the high-speed rail body 7 is displayed on the display screen;

[0055] S8, based on the defect image information, driven by the gantry 42, the defect marking mechanism 6 writes a defect icon on the outer surface of the high-speed rail body 7; this facilitates the staff to quickly find the defective part on the outer surface of the high-speed rail body 7. The defect marking mechanism 6 can use a manipulator, and can also use different marking forms to represent the severity of the defect, so that the staff can perform corresponding maintenance work.

[0056] Therefore, the defect detection method for static high-speed rail body of the utility model can efficiently and accurately complete the detection operation of the top wall and two side walls of the high-speed rail body 7 stopped on the track at one time, and it is convenient for the staff to find and repair the defective parts of the high-speed rail body 7.

[0057] Furthermore, in order to complete the detection operation of the entire high-speed rail body 7 at one time, in step S1, the detection starting point is the front position of the high-speed rail body 7, and the detection ending point is the rear position of the high-speed rail body 7.

[0058] Furthermore, since the material types and wall thicknesses of high-speed rail bodies 7 of different specifications are different, in step S4, the step of starting at least three X-ray emitters 31 includes: adjusting the operating parameters of the X-ray emitters 31, and the operating parameters include tube voltage, tube current and focal spot size. The purpose of the current step is to enable the X-rays emitted by the X-ray generator to penetrate the high-speed rail body 7, so as to accurately characterize the body defects through the photon quantity of the X-rays, and to have sufficient detection resolution and sensitivity.

[0059] Furthermore, in order to improve the detection accuracy of defective parts, in step S7, the step in which the image processing system 5 converts the defect detection information into defect image information includes: the image processing system 5 is connected to an expert database, and the image processing system 5 compares the defect detection information with the expert database to determine whether there is a defect in the X-ray irradiation area corresponding to the defect detection information.

[0060] Furthermore, in order to facilitate the writing of defect icons on different parts of the high-speed rail body 7, the defect marking mechanism 6 includes an inverted U-shaped guide rail 61 and a plurality of marking manipulators 62. The extended shape of the inverted U-shaped guide rail 61 is adapted to the shape of the gantry 42 and the frame. The inverted U-shaped guide rail 61 is fixedly arranged on the gantry 42, and all marking manipulators 62 can be slidably arranged on the inverted U-shaped guide rail 61.

[0061] Further, the marking robot 62 may be a robot with multiple joints, and the marking robot 62 may also include a base 621 slidably disposed on the inverted U-shaped guide rail 61, a telescopic arm 622 disposed on the base 621, and a marking working end 623 disposed at the end of the telescopic arm 622. The marking working end 623 may be a paint spray head.

[0062] Furthermore, in order to simplify the connection structure, the X-ray detection belt 44 is fixed to the gantry 42 via a plurality of connection columns 45 .

[0063] In summary, the utility model can efficiently and accurately complete the inspection of the top wall and two side walls of the high-speed train body stopped on the track at one time, and it is convenient for the staff to find and repair the defective parts of the high-speed train body. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An X-ray flaw detection system, characterized in that: include: Control system (1); A loading vehicle (2) is arranged inside a high-speed railway vehicle body (7), the loading vehicle (2) comprising a loading platform (21) and a traveling mechanism (22) arranged at the bottom of the loading platform (21), and the traveling mechanism (22) is communicatively connected to a control system (1); An X-ray emitting device (3), the X-ray emitting device (3) comprising at least three X-ray emitters (31), each X-ray emitter (31) being communicatively connected to a control system (1), each X-ray emitter (31) comprising a telescopic support (311) disposed on a carrying platform (21) and a transmitter head (312) disposed on the top of the telescopic support (311), the transmitter head (312) being provided with an elongated emission window (313), the X-ray emitter (31) being used to irradiate a top wall (71) or a side wall (72) of a high-speed rail vehicle body (7); An X-ray detection device (4), the X-ray detection device (4) comprising two straight guide rails (41), a gantry (42), a sliding drive mechanism (43) and an X-ray detection belt (44), the straight guide rails (41) extending in a straight line along the length direction of the high-speed rail body (7), two uprights (421) of the gantry (42) being respectively slidably arranged on the two straight guide rails (41), the sliding drive mechanism (43) being transmission-connected to the gantry (42) to drive the gantry (42) to move along the straight guide rails (41), the extended shape of the X-ray detection belt (44) being compatible with the shape of the gantry (42) and the frame, the X-ray detection belt (44) being arranged on the inner side of the gantry (42) to receive X-rays emitted by the X-ray emitter (31), and the X-ray detection belt (44) and the sliding drive mechanism (43) being both communicatively connected to the control system (1); An image processing system (5) communicatively connected to the control system (1) to analyze defect detection information of the X-ray detection belt (44) and convert the defect detection information into defect image information; A defect marking mechanism (6) is movably arranged on the gantry (42), and the defect marking mechanism (6) is communicatively connected to the control system (1) to write a defect icon on the outer surface of the high-speed rail body (7) according to the defect image information.

2. The X-ray flaw detection system according to claim 1, characterized in that: The defect marking mechanism (6) comprises an inverted U-shaped guide rail (61) and a plurality of marking manipulators (62); the extended shape of the inverted U-shaped guide rail (61) is adapted to the shape of the gantry (42) and the frame; the inverted U-shaped guide rail (61) is fixedly arranged on the gantry (42); and all the marking manipulators (62) can be slidably arranged on the inverted U-shaped guide rail (61).

3. The X-ray flaw detection system according to claim 2, characterized in that: The marking robot (62) comprises a base (621) slidably arranged on an inverted U-shaped guide rail (61), a telescopic arm (622) arranged on the base (621), and a marking working end (623) arranged at the end of the telescopic arm (622).

4. The X-ray flaw detection system according to claim 1, characterized in that: The X-ray detection belt (44) is fixedly arranged on the gantry (42) via a plurality of connecting columns (45).

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