CN118090784B - Method for detecting defects of service high-speed rail car body based on X-ray flaw detection system - Google Patents
Method for detecting defects of service high-speed rail car body based on X-ray flaw detection system Download PDFInfo
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Abstract
The invention relates to the technical field of X-ray tubes, and provides a service high-speed railway vehicle body defect detection method based on an X-ray flaw detection system, which comprises the following steps of: s1, determining a detection starting point and a detection ending point; s2, moving the carrying vehicle into the high-speed rail vehicle body in service; 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 an X-ray detection zone; s5, reversely and uniformly moving the carrying vehicle and the serving high-speed rail vehicle body; s6, the X-ray detection band sends defect detection information to the image processing system; s7, converting the defect detection information into defect image information by the image processing system; s8, the defect marking mechanism writes defect icons on the outer surface of the in-service high-speed rail car body. The invention can efficiently and accurately finish the detection operation on the top wall and the two side walls of the in-orbit running service high-speed rail car body at one time.
Description
Technical Field
The invention relates to the technical field of X-ray tubes, in particular to a method for detecting defects of a service high-speed rail car body based on an X-ray flaw detection system.
Background
The high-speed rail car body in service is generally of a thin-wall cylindrical structure formed by processing aluminum alloy sections, and a large number of welding seams are formed in the manufacturing process of the high-speed rail car body in service. The welding seams are easily damaged and defective due to the influence of self tension and external environments such as rainwater, hail, sand dust and the like in the running process of the vehicle.
At present, an ultrasonic detection or contact detection mode is generally adopted for detecting the on-orbit running vehicle, and the detection sensitivity of the two modes to small defects is not high, so that the defect detection capability is poor, and the reliability of detection results obtained by the prior art is low.
In addition, in the prior art, when the on-track vehicle is detected, the surface of the on-service high-speed rail vehicle body needs to be cleaned and the coupling liquid is coated, and then the defect detection is realized on the cleaned surface of the on-service high-speed rail vehicle body by adopting ultrasonic waves, so that the problem of low detection efficiency exists.
The prior patent document (application number: CN 202311044285.4) discloses a device and a system for detecting surface defects of a sheet metal part of a vehicle, which are applied to stamping sheet metal parts of automobiles, particularly sheet metal parts with complex curved surfaces, and are not suitable for high-speed railway bodies in service.
The prior patent document (application number: CN 201620868441.8) discloses a metal tube defect detection device, which, although being detected by a radiation emitter, has some drawbacks: first, the detected object is a metal pipe, and the metal pipe defect detection device cannot be applied to the detection of the in-service high-speed railway vehicle body because the specification of the metal pipe is greatly different from the specification of the in-service high-speed railway vehicle body. Secondly, two rails need to be paved on site, one rail is used for the feeding device, and the other rail is used for the portal frame, so that the operation is very troublesome. In addition, the paved tracks are often constrained by geographical factors and are difficult to perform.
The prior patent document (application number: CN 202021868442.5) discloses an X-ray nondestructive testing device for on-line production of conductive pipes, and the X-ray nondestructive testing device also adopts an X-ray nondestructive emitter for detection, but has some defects: firstly, the detected object is a conductive pipe sample, and the on-line production conductive pipe X-ray nondestructive detection device cannot be applied to detection of the in-service high-speed railway vehicle body because the specification of the conductive pipe sample and the specification of the in-service high-speed railway vehicle body are greatly different. Secondly, a track and a material-containing power trolley running on the track are required to be built for the conductive pipe sample, and the operation is troublesome. Thirdly, the X-ray nondestructive emitter is positioned on the outer side of the conductive pipe sample, and the detection efficiency is low because the X-ray nondestructive emitter irradiates the local structure of the conductive pipe sample while rotating the conductive pipe sample.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the invention is to provide a method for detecting defects of a service high-speed railway vehicle body based on an X-ray flaw detection system, which can efficiently and accurately finish detection operation on the top wall and two side walls of the service high-speed railway vehicle body running on the track at one time, and is convenient for workers to find and repair the defects of the service high-speed railway vehicle body.
In order to solve the technical problems, the invention provides a method for detecting defects of a service high-speed rail car body based on an X-ray flaw detection system, wherein the X-ray flaw detection system comprises:
A control system;
The carrying vehicle is arranged in the high-speed rail train body, comprises a carrying platform and a running mechanism arranged at the bottom of the carrying platform, and is in communication connection with the control system;
the X-ray emission device comprises at least three X-ray emitters, each X-ray emitter is connected with the control system in a communication way, each X-ray emitter comprises a telescopic support column arranged on the carrying platform and an emission head arranged at the top end of the telescopic support column, an elongated emission window is arranged on the emission head, and the X-ray emitters are used for irradiating the top wall or the side wall of the high-speed railway car body in service;
The X-ray detection device comprises an X-ray detection belt and a portal frame, wherein two upright posts of the portal frame are respectively and fixedly arranged on two opposite sides of a train track so as to allow a high-speed railway car body to run through, the extending shape of the X-ray detection belt is matched with the shape of the portal frame and the frame, the X-ray detection belt is arranged on the inner side of the portal frame so as to receive X-rays emitted by an X-ray emitter, and the X-ray detection belt is in communication connection with a control system;
An image processing system communicatively connected to the control system for analyzing the defect detection information of the X-ray detection zone and converting the defect detection information into defect image information;
the defect marking mechanism is movably arranged on the portal frame and is in communication connection with the control system so as to paint a defect icon on the outer surface of the in-service high-speed rail car body according to the defect image information;
the method for detecting the defects of the in-service high-speed railway car body comprises the following steps:
S1, marking a detection starting point and a detection ending point on a service high-speed rail car body;
S2, placing the carrying vehicle into the inside of the in-service high-speed rail vehicle body;
s3, calibrating the current positions of the X-ray emitter and the X-ray detection zone, so that the X-ray emitter and the X-ray detection zone are both positioned on the cross section of the in-service high-speed railway body passing through the detection starting point;
s4, starting at least three X-ray emitters to respectively emit fan-shaped X-rays towards the top wall and the two side walls of the high-speed rail car body in service, wherein the irradiation areas of the two adjacent X-ray emitters on the high-speed rail car body in service are mutually connected or mutually overlapped; starting an X-ray detection zone to enable the X-ray detection zone to receive X-rays which pass through the in-service high-speed rail car body and carry car body defect information;
S5, enabling the carrying vehicle to linearly move to a detection termination point along the length direction of the service high-speed rail vehicle body, and enabling the service high-speed rail vehicle body to run along a train track; the running speed of the carrying vehicle relative to the ground is always equal to the running speed of the service high-speed railway vehicle body relative to the ground, and the running direction of the carrying vehicle relative to the ground and the running direction of the service high-speed railway vehicle body relative to the ground are always opposite to each other, so that the X-ray emitter and the X-ray detection belt are always positioned on the same cross section of the service high-speed railway vehicle body;
S6, the X-ray detection band sends defect detection information to the image processing system;
s7, the image processing system converts the defect detection information into defect image information and displays the defect image information on a display screen in a 3D image form;
s8, intermittently returning the serving high-speed railway body to the original position based on the defect image information, and coating defect icons on the outer surface of the serving high-speed railway body by the defect marking mechanism.
Further, in step S1, the detection start point is a head position of the service high-speed rail vehicle body, and the detection end point is a tail position of the service high-speed rail vehicle body.
Further, in step S4, the step of activating at least three X-ray emitters includes: the operating parameters of the X-ray emitter are adjusted, including tube voltage, tube current, and focal spot size.
Further, in step S7, the step of converting the defect detection information into defect image information by the image processing system includes: the image processing system is connected with an expert database, compares the defect detection information with the expert database, and determines whether the X-ray irradiation area corresponding to the defect detection information has defects.
Further, the defect marking mechanism comprises an inverted U-shaped guide rail and a plurality of marking manipulators, the extending shape of the inverted U-shaped guide rail is matched with the shape of the portal frame and the shape of the frame, the inverted U-shaped guide rail is fixedly arranged on the portal frame, and all the marking manipulators are slidably arranged on the inverted U-shaped guide rail.
Further, the marking manipulator comprises a base, a telescopic arm and a marking working end, wherein the base is arranged on the inverted U-shaped guide rail in a sliding mode, the telescopic arm is arranged on the base, and the marking working end is arranged at the end portion of the telescopic arm.
Further, the X-ray detection belt is fixedly arranged on the portal frame through a plurality of connecting columns.
As described above, the method for detecting the defects of the service high-speed rail car body based on the X-ray flaw detection system has the following beneficial effects: in the invention, S1, marking a detection starting point and a detection ending point on a high-speed rail car body, wherein the part between the detection starting point and the detection ending point can be the whole high-speed rail car body or one section of the high-speed rail car body; s2, placing the carrying vehicle into the inside of the in-service high-speed rail vehicle body; the portal frame is fixedly arranged on the ground, and the portal frame is spanned on the body of the service Gao Tieche, so that the X-ray detection belt can receive all X-rays penetrating through the body of the service high-speed railway; 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 are both positioned on the cross section of the service high-speed railway car body passing through the detection starting point, which is a key preparation step of the reverse constant-speed movement of the carrying car and the service high-speed railway car body; The carrying vehicle can run at a constant speed, at a variable speed or intermittently, and the serving high-speed railway vehicle body can also run at a constant speed, at a variable speed or intermittently, so long as the carrying vehicle and the serving high-speed railway vehicle body do reverse constant-speed motion; s4, starting at least three X-ray emitters to respectively emit fan-shaped X-rays towards the top wall and the two side walls of the high-speed rail car body in service, wherein the irradiation areas of the two adjacent X-ray emitters on the high-speed rail car body in service are mutually connected or mutually overlapped; starting an X-ray detection zone to enable the X-ray detection zone to receive X-rays which pass through the in-service high-speed rail car body and carry car body defect information; s5, enabling the carrying vehicle to linearly move along the length direction of the service high-speed rail vehicle body to a detection termination point, and enabling the service high-speed rail vehicle body to linearly move along the train track; During the period, the running speed of the carrying vehicle is always equal to the running speed of the in-service high-speed railway vehicle body, and the running direction of the carrying vehicle and the running direction of the in-service high-speed railway vehicle body are always opposite to each other, so that the X-ray emitter and the X-ray detection belt are always positioned on the same cross section of the in-service high-speed railway vehicle body; s6, the X-ray detection band sends defect detection information to the image processing system; specifically, because the defect part of the service high-speed railway vehicle body is different from the normal part of the service high-speed railway vehicle body in terms of density, the intensity of X-rays transmitted through the defect part is different from the intensity of X-rays transmitted through the normal part, and the X-ray detection belt transmits defect detection information corresponding to the X-rays with 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 displays the defect image information on a display screen in a 3D image form; s8, intermittently returning the service high-speed rail car body to an original position based on the defect image information, and coating a defect icon on the outer surface of the service high-speed rail car body by a defect marking mechanism; thus, the defect part can be conveniently and rapidly found on the outer surface of the in-service high-speed rail car body by the staff. The defect marking mechanism can adopt a mechanical arm, and the defect severity can be represented by different marking forms, so that the corresponding maintenance processing work can be conveniently carried out by staff. Therefore, the method for detecting the defects of the service high-speed rail car body based on the X-ray flaw detection system can efficiently and accurately finish detection operation on the top wall and the two side walls of the service high-speed rail car body running on the track at one time, and is convenient for workers to find and repair the defects of the service high-speed rail car body.
Drawings
Fig. 1 is a schematic perspective view showing an X-ray inspection system of the present invention when inspecting a high-speed rail car body in service.
Fig. 2 is a schematic front view of the X-ray inspection system of the present invention when inspecting a high-speed rail car body in service.
Fig. 3 shows a schematic connection of the gantry, the X-ray detection zone and the defect marking mechanism.
Fig. 4 shows an enlarged view of the portion a in fig. 3.
Fig. 5 shows a schematic view of the connection of the cart and the X-ray emitting device.
Description of element numbers: the system comprises a control system 1, a carrying vehicle 2, a carrying platform 21, a travelling mechanism 22, an X-ray emitting device 3, an X-ray emitter 31, a telescopic support column 311, an emitting head 312, an emitting window 313, an X-ray detecting device 4, an X-ray detecting band 41, a portal frame 42, a column 421, a connecting column 43, an image processing system 5, a defect marking mechanism 6, an inverted U-shaped guide rail 61, a marking manipulator 62, a base 621, a telescopic arm 622, a marking working end 623, a high-speed rail car body 7 in service, a top wall 71, side walls 72 and a train track 8.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the claims, unless otherwise indicated, and unless otherwise indicated, all changes in structure, proportions, or otherwise, used by those skilled in the art, are included in the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
In fig. 1, the X-axis direction indicates the width direction of the in-service high-speed rail vehicle body 7, the Y-axis direction indicates the length direction of the in-service high-speed rail vehicle body 7, and the Z-axis direction indicates the height direction of the in-service high-speed rail vehicle body 7; the non-solid straight arrow indicates the traveling direction of the vehicle 2, and the solid straight arrow indicates the traveling direction of the service high-speed rail vehicle body 7.
As shown in fig. 1, 2,3, 4 and 5, the present invention provides a method for detecting defects of a service high-speed rail car body based on an X-ray flaw detection system, the X-ray flaw detection system includes:
A control system 1;
A carrying vehicle 2 arranged in the high-speed railway vehicle body 7, wherein the carrying vehicle 2 comprises a carrying platform 21 and a running mechanism 22 arranged at the bottom of the carrying platform 21, the running mechanism 22 is in communication connection with the control system 1, and the high-speed railway vehicle body 7 is arranged on the train track 8 and is in communication connection with the control system 1;
The X-ray emitting device 3, the X-ray emitting device 3 comprises at least three X-ray emitters 31, each X-ray emitter 31 is connected with the control system 1 in a communication way, each X-ray emitter 31 comprises a telescopic support column 311 arranged on the carrying platform 21 and an emitting head 312 arranged at the top end of the telescopic support column 311, an elongated emitting window 313 is arranged on the emitting head 312, and the X-ray emitters 31 are used for irradiating the top wall 71 or the side wall 72 of the high-speed railway vehicle body 7 in service;
The X-ray detection device 4, the X-ray detection device 4 comprises an X-ray detection belt 41 and a portal frame 42, two upright posts 421 of the portal frame 42 are respectively and fixedly arranged on two opposite sides of the train track 8 so as to allow the running of the high-speed railway car body 7 to pass through, the extending shape of the X-ray detection belt 41 is matched with the shape of the portal frame 42 and the frame shape, the X-ray detection belt 41 is arranged on the inner side of the portal frame 42 so as to receive X-rays emitted by the X-ray emitter 31, and the X-ray detection belt 41 is in communication connection with the control system 1;
An image processing system 5, the image processing system 5 being communicatively connected to the control system 1 to analyze the defect detection information of the X-ray detection zone 41 and to convert the defect detection information into defect image information;
the defect marking mechanism 6 is movably arranged on the portal frame 42, and the defect marking mechanism 6 is in communication connection with the control system 1 so as to paint defect icons on the outer surface of the service high-speed rail car body 7 according to defect image information;
the method for detecting the defects of the in-service high-speed railway car body comprises the following steps:
S1, marking a detection starting point and a detection ending point on a service high-speed rail car body 7;
s2, placing the carrying vehicle 2 into the service high-speed rail vehicle body 7;
S3, calibrating the current positions of the X-ray emitter 31 and the X-ray detection belt 41, so that the X-ray emitter 31 and the X-ray detection belt 41 are positioned on the cross section of the in-service high-speed railway body 7 passing through the detection starting point;
S4, starting at least three X-ray emitters 31 to respectively emit fan-shaped X-rays towards the top wall 71 and the two side walls 72 of the service high-speed railway body 7, wherein the irradiation areas of the two adjacent X-ray emitters 31 on the service high-speed railway body 7 are mutually connected or mutually overlapped; activating the X-ray detection belt 41 so that the X-ray detection belt 41 receives the X-rays which have passed through the in-service high-speed rail car body 7 and carry car body defect information;
S5, enabling the carrying vehicle 2 to linearly move to a detection termination point along the length direction of the service high-speed rail vehicle body 7, and enabling the service high-speed rail vehicle body 7 to run along the train track 8; the running speed of the carrying vehicle 2 relative to the ground is always equal to the running speed of the service high-speed railway vehicle body 7 relative to the ground, and the running direction of the carrying vehicle 2 relative to the ground and the running direction of the service high-speed railway vehicle body 7 relative to the ground are always opposite to each other, so that the X-ray emitter 31 and the X-ray detection belt 41 are always positioned on the same cross section of the service high-speed railway vehicle body 7;
S6, the X-ray detection belt 41 sends defect detection information to the image processing system 5;
s7, the image processing system 5 converts the defect detection information into defect image information and presents the defect image information on a display screen in a 3D image form;
s8, based on the defect image information, intermittently returning the service high-speed rail car body 7 to the original position, and coating defect icons on the outer surface of the service high-speed rail car body 7 by the defect marking mechanism 6.
In the X-ray flaw detection system of the present invention, the control system 1 is an existing structure, and the control system 1 mainly has functions of information interaction and information processing, which are not described in detail. The carrying vehicle 2 is arranged in the high-speed railway vehicle body 7 and can linearly move along the length direction of the high-speed railway vehicle body 7 under the control of the control system 1; the mounting platform 21 is used for mounting the X-ray emitting device 3. The number of X-ray emitters 31 is at least three, only three X-ray emitters 31 are shown in the drawing, the radiation angles of which can cover the top wall 71 and/or the side walls 72, and the radiation angles corresponding to different X-ray emitters 31 overlap, and in fact, N X-ray emitters 31 can be used each time, N (n.ltoreq.n) X-ray emitters 31 can be used, as long as the radiation angles of the N X-ray emitters 31 can cover the top wall 71 and the two side walls 72. In an extreme case, N may be several hundred, of which several tens of X-ray emitters 31 are simultaneously emitted at a time, and several hundred X-ray emitters 31 are alternately emitted at several tens of times. That is, the defect detection information can be obtained from different angles at the same defect position, and then reconstruction processing can be performed by the existing software. The X-ray emitting device 3 includes three X-ray emitters 31, respectively denoted as a first X-ray emitter 31, a second X-ray emitter 31, and a third X-ray emitter 31, which are arranged side by side in the width direction of the service high-speed railway body 7, the second X-ray emitter 31 being for irradiating the top wall 71 of the service high-speed railway body 7, the first X-ray emitter 31 and the third X-ray emitter 31 being for irradiating the two side walls 72 of the service high-speed railway body 7, respectively. Since the emission window 313 is long, the emitted X-rays are diffused. Since the height of the telescopic strut 311 can be raised or lowered, the area irradiated by the emitter head 312 on the in-service high-speed railway body 7 can be changed. Preferably, the first X-ray emitter 31 and the third X-ray emitter 31 are symmetrically disposed on opposite sides of the second X-ray emitter 31. In order to simultaneously receive the X-rays emitted by at least three X-ray emitters 31, the service high-speed rail car body 7 and the loading car 2 must move at the same speed in the opposite direction. The two upright posts 421 of the portal frame 42 are respectively and fixedly arranged on two opposite sides of the train track 8 to allow the running of the high-speed railway car body 7 to pass through, the extending shape of the X-ray detection belt 41 is matched with the portal frame 42 and the frame shape, and the X-ray detection belt 41 is arranged on the inner side of the portal frame 42 to receive X-rays emitted by the X-ray emitter 31. The X-ray detecting band 41 has a conventional structure and will not be described in detail. The general structure is as follows: the X-ray detecting section 41 has X-ray detecting units closely arranged in the extending direction of the X-ray detecting section 41. The image processing system 5 is an existing structure, and is not described in detail, and mainly includes image processing hardware or image processing software. The image processing system 5 is communicatively connected to the control system 1 for analyzing the defect detection information of the X-ray detection zone 41 and converting the defect detection information into defect image information, which may be a 3D model having different colors, e.g. red for defective locations and green for locations without defects. Finally, in order to facilitate the staff to quickly find the defective part of the in-service high-speed rail car body 7. The defect marking mechanism 6 is movably arranged on the portal frame 42, so that the defect marking mechanism 6 can move to the vicinity of a defect part in the process of intermittently retracting the service high-speed railway body 7 to an original position, and then a defect icon is painted on the outer surface of the service high-speed railway body 7 according to defect image information.
In the method for detecting the defects of the in-service high-speed rail car body, S1, marking a detection starting point and a detection ending point on the in-service high-speed rail car body 7, wherein the part between the detection starting point and the detection ending point can be the whole in-service high-speed rail car body 7 or one section of car body of the in-service high-speed rail car body 7;
S2, placing the carrying vehicle 2 into the service high-speed rail vehicle body 7; the portal frame is fixedly arranged on the ground, and the portal frame 42 is transversely erected on the high-speed rail car body 7 in service, so that the X-ray detection belt 41 can receive all X-rays penetrating through the high-speed rail car body 7 in service;
S3, calibrating the current positions of the X-ray emitter 31 and the X-ray detection belt 41, so that the X-ray emitter 31 and the X-ray detection belt 41 are positioned on the cross section of the service high-speed railway body 7 passing through the detection starting point, which is a key preparation step of the reverse constant-speed movement of the carrying vehicle 2 and the service high-speed railway body; the carrying vehicle 2 can run at a constant speed, a variable speed or intermittently, and the serving high-speed railway vehicle body can also run at a constant speed, a variable speed or intermittently, so long as the carrying vehicle 2 and the serving high-speed railway vehicle body do reverse constant-speed motion. For example, since defects of the service high-speed rail car body 7 generally occur at the weld of the service high-speed rail car body 7, when the weld of the service high-speed rail car body 7 is detected, the traveling speeds of the carrying car 2 and the service high-speed rail car body can be slightly slow, even stopped, so as to obtain enough X-rays carrying defect signals, thereby improving the detection sensitivity, resolution and detection reliability. When the non-welded joint part of the service high-speed rail car body 7 is detected, the running speeds of the carrying car 2 and the service high-speed rail car body can be slightly fast, so that the defect detection efficiency of the whole service high-speed rail car body 7 is improved.
S4, starting at least three X-ray emitters 31 to respectively emit fan-shaped X-rays towards the top wall 71 and the two side walls 72 of the service high-speed railway body 7, wherein the irradiation areas of the two adjacent X-ray emitters 31 on the service high-speed railway body 7 are mutually connected or mutually overlapped; activating the X-ray detection belt 41 so that the X-ray detection belt 41 receives the X-rays which have passed through the in-service high-speed rail car body 7 and carry car body defect information; for example, the angle corresponding to the diffuse X-ray emitted from the X-ray emitter No. 31 is 77 degrees, and the angles corresponding to the diffuse X-ray emitted from the X-ray emitter No. 31 and the diffuse X-ray emitted from the X-ray emitter No. 31 are 104 degrees;
S5, enabling the carrying vehicle 2 to linearly move to a detection termination point along the length direction of the service high-speed rail vehicle body 7, and enabling the service high-speed rail vehicle body 7 to linearly move along the train track 8; during the period, the running speed of the carrying vehicle is always equal to the running speed of the in-service high-speed railway vehicle body, and the running direction of the carrying vehicle and the running direction of the in-service high-speed railway vehicle body are always opposite to each other, so that the X-ray emitter 31 and the X-ray detection belt 41 are always positioned on the same cross section of the in-service high-speed railway vehicle body 7;
s6, the X-ray detection belt 41 sends defect detection information to the image processing system 5; specifically, since the defect part of the service high-speed railway vehicle body 7 is different from the normal part of the service high-speed railway vehicle body 7 in terms of density, the intensity of the X-rays transmitted through the defect part is different from the intensity of the X-rays transmitted through the normal part, and the X-ray detection belt 41 transmits defect detection information corresponding to the X-rays with different intensities to the image processing system 5 through the control system 1;
s7, the image processing system 5 converts the defect detection information into defect image information and presents the defect image information on a display screen in a 3D image form; for example, a 3D model scaled down in equal proportion to the in-service high-speed rail car body 7 is displayed on a display screen;
S8, intermittently returning the service high-speed rail car body 7 to an original position based on defect image information, and coating a defect icon on the outer surface of the service high-speed rail car body 7 by the defect marking mechanism 6; this facilitates the quick finding of defective parts by the staff on the outer surface of the in-service high-speed rail body 7. The defect marking mechanism 6 can adopt a mechanical arm, and can also represent the severity of the defect through different marking forms, so that the corresponding maintenance processing work is convenient for the staff. For example, based on the defect image information, first, the in-service high-speed rail body 7 is retracted to the first preset position, and the defect marking mechanism 6 writes a defect icon on the outer surface of the in-service high-speed rail body 7; then, the service high-speed rail car body 7 continues to travel and returns to the second preset position, and the defect marking mechanism 6 writes the defect icons on the outer surface of the service high-speed rail car body 7 until all the defect parts are marked with the defect icons. Finally, the service high-speed rail car body 7 is retracted to the original position.
Therefore, the method for detecting the defects of the service high-speed rail car body based on the X-ray flaw detection system can efficiently and accurately finish detection operation on the top wall and the two side walls of the service high-speed rail car body 7 running on the track at one time, and is convenient for workers to find and repair the defects of the service high-speed rail car body 7.
Further, in order to complete the detection operation on the whole service high-speed railway vehicle body 7 at one time, in step S1, the detection start point is the head position of the service high-speed railway vehicle body 7, and the detection end point is the tail position of the service high-speed railway vehicle body 7.
Further, since the material types and the wall thicknesses of the service high-speed rail bodies 7 of different specifications are different from each other, in step S4, the step of activating at least three X-ray emitters 31 includes: the operating parameters of the X-ray emitter 31 are adjusted, including tube voltage, tube current and focal spot size. The purpose of the present step is to enable the X-rays emitted by the X-ray generator to transmit through the high-speed railway body 7 in service, to facilitate accurate characterization of body defects by the photon quantity of the X-rays, and to have sufficient detection resolution and sensitivity.
Further, in order to improve the accuracy of detecting the defective portion, in step S7, the step of converting the defect detection information into defect image information by the image processing system 5 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 the X-ray irradiation area corresponding to the defect detection information has defects.
Further, in order to facilitate the writing of defect icons on different parts of the in-service high-speed railway vehicle body 7, the defect marking mechanism 6 includes an inverted U-shaped guide rail 61 and a plurality of marking manipulators 62, the extension shape of the inverted U-shaped guide rail 61 is adapted to the shape of the portal frame 42 and the frame, the inverted U-shaped guide rail 61 is fixedly arranged on the portal frame 42, and all the marking manipulators 62 are slidably arranged on the inverted U-shaped guide rail 61.
Further, the marking robot 62 may be a robot having a plurality of joints, and the marking robot 62 may include a base 621 slidably disposed on the inverted U-shaped rail 61, a telescopic arm 622 disposed on the base 621, and a marking working end 623 disposed on an end of the telescopic arm 622. The marking tip 623 may be a paint spray head.
Further, in order to simplify the connection structure, the X-ray detection belt 41 is fixedly disposed on the gantry 42 through a plurality of connection posts 43.
In summary, the invention can efficiently and accurately finish the detection operation on the top wall and the two side walls of the on-orbit running service high-speed rail car body at one time, and is convenient for the staff to find and repair the defect part of the service high-speed rail car body. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
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| CN202410501831.0A CN118090784B (en) | 2024-04-25 | 2024-04-25 | Method for detecting defects of service high-speed rail car body based on X-ray flaw detection system |
| PCT/CN2025/090650 WO2025223450A1 (en) | 2024-04-25 | 2025-04-23 | In-service high-speed-train body defect detection method based on x-ray flaw detection system |
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| CN109900501A (en) * | 2019-01-31 | 2019-06-18 | 石家庄铁道大学 | High-speed EMUs vehicle artificial intelligence lossless detection method |
| CN113984801A (en) * | 2021-10-14 | 2022-01-28 | 上海航天设备制造总厂有限公司 | Digital ray automatic detection device and use method |
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| JP4005828B2 (en) * | 2002-03-27 | 2007-11-14 | 石川島運搬機械株式会社 | X-ray inspection method |
| JP4040384B2 (en) * | 2002-08-06 | 2008-01-30 | 財団法人鉄道総合技術研究所 | Train detection system |
| US7929664B2 (en) * | 2007-02-13 | 2011-04-19 | Sentinel Scanning Corporation | CT scanning and contraband detection |
| CN106153650B (en) * | 2016-08-19 | 2018-09-28 | 苏州工业园区道青科技有限公司 | A kind of hub defect detection device |
| CN213302040U (en) * | 2020-08-31 | 2021-05-28 | 辽宁忠旺集团有限公司 | An X-ray non-destructive testing device for online production of conductive pipes |
| CN215953413U (en) * | 2021-09-28 | 2022-03-04 | 原科辐能(烟台)智能科技有限公司 | X-ray vehicle inspection device with three sources and three visual angles on same side |
| JP7535545B2 (en) * | 2022-02-17 | 2024-08-16 | 本田技研工業株式会社 | Vehicle battery inspection equipment |
| CN118090784B (en) * | 2024-04-25 | 2024-07-02 | 上海超群检测科技股份有限公司 | Method for detecting defects of service high-speed rail car body based on X-ray flaw detection system |
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| CN109900501A (en) * | 2019-01-31 | 2019-06-18 | 石家庄铁道大学 | High-speed EMUs vehicle artificial intelligence lossless detection method |
| CN113984801A (en) * | 2021-10-14 | 2022-01-28 | 上海航天设备制造总厂有限公司 | Digital ray automatic detection device and use method |
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