Steel rail pre-welding detection system

Abstract

The steel rail pre-welding detection system comprises a rack, a conveying assembly and a first detection assembly, the conveying assembly is connected to the rack and used for conveying a steel rail, the first detection assembly comprises a scanning piece, a driving piece and a sliding piece, the scanning piece is arranged opposite to the steel rail and used for scanning the steel rail, and the driving piece is connected to the scanning piece; the sliding part is connected to the driving part, is in sliding connection with the rack and is used for driving the driving part and the scanning part to slide relative to the steel rail in the conveying direction of the steel rail. The method can effectively solve the problem that the requirement of a detection system for the use number of the laser contourgraph is large due to the fact that the scanning areas of the four adjustable laser contourgraphs are adopted to cover full-section scanning of the steel rail under the synergistic effect.

Description

Technical Field

[0001] The invention relates to the technical field of rail shape detection, and in particular to a rail pre-welding detection system. Background Art

[0002] In order to solve the problem that the detection of rail dimensions mainly relies on human eyes, which leads to certain randomness and low efficiency in the detection results, research on related detection devices came into being.

[0003] For example, the Chinese utility model patent with publication number: CN110954026B is named: an online detection device for measuring the geometric profile of a rail. The detection platform can support and level the rail to be measured in real time through the cooperation of a hydraulically liftable roller track roller and a roller track roller supporting the rail; the laser profile sensor module is driven by a mechanical transmission module to move along the length direction of the rail to be measured on the walking platform, and is used to scan the geometric profile of the rail and convert the rail profile into two-dimensional coordinate data. The mounting seat in the laser profile sensor module is sleeved on the outside of the rail to be measured, and four laser profilers are connected to the mounting seat through a positioning ring. The laser profilers on the left and right sides are installed on a swing motor, and can measure the end face of the rail, thereby realizing the verticality measurement between the rail end and the rail bottom; the invention installs a positioning ring to connect a rotating motor, and under the drive of the rotating motor, adjusts the spatial circumferential position of the four laser profilers scanning, so as to realize real-time adjustment of the blind spot scanning of the rail to be measured.

[0004] In the prior art, four laser profilers are installed in the circumferential direction of the rail using mounting positioning rings, and then the scanning areas of the four laser profilers are adjusted to cover the entire cross-section of the rail, resulting in a large number of laser profilers required for the detection system. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a pre-weld inspection system for rails to solve the technical problem in the prior art that the inspection system requires a large number of laser profilers due to the coordinated use of four adjustable scanning areas of the laser profilers to cover the full cross-section scanning of the rails.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a rail pre-welding detection system, comprising: frame; A conveying assembly connected to the frame and used for conveying rails; and The first detection component includes a scanning component, a driving component and a sliding component. The scanning component is arranged relative to the rail and is used to scan the rail. The driving component is connected to the scanning component and can drive the scanning component to rotate around the rail with the rail as the center. The sliding component is connected to the driving component and is slidably connected to the frame, and is used to drive the driving component and the scanning component to slide relative to the rail along the conveying direction of the rail.

[0007] In some embodiments, the conveying assembly includes two roller members spaced apart from each other, each roller member having a fixed end and a rotating end, the fixed ends of the two roller members are respectively connected to the frame, and the rotating ends of the two roller members are used to respectively abut and transport the rails.

[0008] In some embodiments, the first detection component further includes at least one calibration piece, the calibration piece having a plurality of calibration points, the plurality of calibration points being evenly distributed along the circumferential direction of the rail and all connected to the frame for cooperating with the scanning piece for linear scanning.

[0009] In some embodiments, the calibration part has a first fixed portion, a first abutting portion and a calibration portion, the first fixed portion is arranged between the two roller members and connected to the frame, the first abutting portion is rotatably connected to the first fixed portion and can abut against the rail, the calibration portion is connected to the first fixed portion, and the calibration portion is provided with a fixed channel allowing the rail to pass through, and a plurality of calibration points are arranged at intervals along the length direction of the fixed channel and are respectively connected to the circumferential side walls of the fixed channel.

[0010] In some embodiments, the marking portion is further provided with a notch, the notch is communicated with the fixing channel, and the first abutting portion is embedded in the fixing channel via the notch.

[0011] In some embodiments, the first detection component further includes two clamping parts, which are respectively arranged on both sides of the fixed channel and are respectively slidably connected to the first fixed part, and the two clamping parts can respectively abut against the rail after approaching each other.

[0012] In some embodiments, the rail pre-weld inspection system also includes a second inspection component, which includes a support body and a plurality of image acquisition components. The support body is spaced apart from the roller component and is provided with an inspection channel allowing the rail to pass through. The plurality of image acquisition components are spaced apart along the circumferential direction of the inspection channel and are all connected to the support body.

[0013] In some embodiments, the number of the image acquisition components in the second detection assembly is six, two of the image acquisition components are arranged relative to the rail, and are respectively connected to the two opposite side walls of the detection channel, and the four image acquisition components form a pair of two, and the two pairs of image acquisition components are arranged relative to the rail, and are respectively connected to the other two opposite side walls of the detection channel.

[0014] In some embodiments, the second detection assembly further includes at least one speed detection member, which is disposed relative to the rail and connected to the frame for detecting a translational speed of the rail relative to the frame.

[0015] In some embodiments, the rail pre-weld inspection system further includes a data processing component, and the data processing component is electrically connected to the roller component, the scanning component, the driving component, the sliding component, the multiple image acquisition components and the speed detection component.

[0016] Compared with the prior art, the beneficial effects of the rail pre-weld detection system provided by the present invention include: a transmission component for conveying rails is provided on the frame, a first detection component includes a scanning component, a driving component and a sliding component, the scanning component is slidably connected to the frame via the driving component and the sliding component, and is used to realize scanning relative to the rail along the guide sliding of the frame, and the scanning component can also rotate around the rail with the rail as the center under the drive of the driving component, so as to realize scanning of the full cross-section of the rail. Compared with the prior art, by slidably connecting the scanning component to the frame, the scanning component can slide relative to the rail along the guide of the frame, and at the same time, the scanning component can also rotate around the rail with the rail as the center under the drive of the driving component, so that the scanning component can scan the full cross-section of the rail, avoiding fixing multiple laser profilers in the installation positioning ring, thereby reducing the number of laser profilers required by the detection system, and can solve the technical problem in the prior art that the scanning area of ​​four adjustable laser profilers is used to cover the full cross-section scanning of the rail, thereby causing the detection system to have a large number of laser profilers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a rail pre-weld detection system connected to a rail provided by an embodiment of the present invention; Figure 2 It is a three-dimensional diagram of another viewing angle of a rail pre-weld inspection system connected to a rail provided by an embodiment of the present invention; Figure 3 It is a three-dimensional diagram of a rail pre-weld detection system connected to a rail from another perspective provided by an embodiment of the present invention; Figure 4 is along Figure 3 The enlarged schematic diagram of point A in the middle: Figure 5It is a three-dimensional diagram of the connection between the frame and the calibration piece, the rail and the clamping part provided by one embodiment of the present invention; Figure 6 is a three-dimensional diagram of a second detection component provided by an embodiment of the present invention; Figure 7 is a three-dimensional diagram of another viewing angle of the second detection component provided by an embodiment of the present invention; Figure 8 is a three-dimensional diagram of a second detection component from another viewing angle provided by an embodiment of the present invention; Fig. 9 It is a three-dimensional diagram of a speed detection component provided by an embodiment of the present invention.

[0018] Description of reference numerals: Frame 100; conveying assembly 200; roller member 210; first detection assembly 300; scanning member 310; sliding member 320; calibration member 330; calibration point 331; first fixing portion 332; first abutting portion 333; calibration portion 334; fixing channel 335; clamping portion 340; sliding seat 341; linear drive structure 342; driving member 350; data processing assembly 400; rail 500; second detection assembly 600; support body 610; image acquisition member 620; speed detection member 630; second abutting portion 631; detection portion 632; connecting portion 633; ​​elastic portion 634; mounting plate 635; sliding portion 636; second fixing portion 637; adjustment portion 638. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem in the prior art that the four laser profilers are all installed on the circumference of a mounting positioning ring whose outer dimensions cannot be adjusted, resulting in limitations on the size of the rail 500 to be tested that the detection device is applicable to, the present invention provides a pre-weld detection system for a rail 500, which can be achieved by slidably connecting a scanning piece 310 to a frame 100 so that the scanning piece 310 can slide relative to the rail 500 along the guide of the frame 100, and the scanning piece 310 can also rotate around the rail 500 with the rail 500 as the center, so that the scanning piece 310 can scan the entire cross-section of the rail 500, avoiding the rail 500 from passing through a mounting positioning ring with a fixed size, thereby being applicable to rails 500 of different sizes.

[0021] See also Figures 1 to 9 , Figure 1 , Figure 2The present invention is a schematic diagram of the structure of a pre-welding inspection system for a rail 500 in an embodiment of the present invention. The pre-welding inspection system for a rail 500 includes a frame 100, a transmission component 200, a first detection component 300 and a data processing component 400. The transmission component 200 is connected to the frame 100 and is used to transport the rail 500 along the guide of the frame 100. The first detection component 300 includes a scanning component 310, a driving component 350 and a sliding component 320. The scanning component 310 is arranged relative to the rail 500 and is used to scan the rail 500. The driving component 350 is connected to the scanning component 310 and can drive the scanning component to rotate around the rail 500 with the rail 500 as the center. The sliding component 320 is connected to the scanning component 310 and is slidably connected to the frame 100, and is used to drive the scanning component 310 to slide relative to the rail 500 along the guide of the frame 100.

[0022] In this device, a conveying component 200 for conveying the rail 500 is provided on the frame 100, and the first detection component 300 includes a scanning component 310, a driving component 350 and a sliding component 320. The scanning component 310 is slidably connected to the frame 100 via the sliding component 320, and is used to realize the scanning relative to the rail 500 and the guided sliding along the frame 100. The scanning component 310 can also rotate around the rail 500 with the rail 500 as the center under the drive of the driving component 350, and is used to realize the scanning of the entire cross-section of the rail 500.

[0023] In this embodiment, the scanning member 310 is slidably connected to the frame 100, so that the scanning member 310 can slide along the guide of the frame 100 relative to the rail 500. At the same time, the scanning member 310 can also rotate around the rail 500 with the rail 500 as the center under the drive of the driving member 350, so that the scanning member 310 can scan the entire cross-section of the rail 500, avoiding the need to fix multiple laser profilers in the installation positioning ring, thereby reducing the number of laser profilers required by the detection system, and can solve the technical problem in the prior art that the detection system requires a large number of laser profilers due to the coordinated use of four adjustable laser profilers to scan the entire cross-section of the rail.

[0024] In this embodiment, Figure 1 , Figure 2 As shown, the data processing component 400 is electrically connected to the transmission component 200, the scanning component 310 and the sliding component 320 to realize automatic detection.

[0025] Furthermore, in the present device, the frame 100 is a support structure or work platform for supporting each component, and the data processing component 400 is an automated control system that is common and easy to purchase on the market. By electrically connecting the data processing component 400 with the transmission component 200, the scanning component 310 and the sliding component 320, it is used to realize automated control and automatic detection. Here, the frame 100 and data processing are conventional settings well known to those skilled in the art, and will not be described in detail here.

[0026] In one embodiment, the scanning piece 310 is a common device on the market, such as 3D structured light scanning. 3D structured light scanning is a non-contact optical three-dimensional measurement technology. It projects a coded structured light pattern (such as stripes, grids or sine waves) onto the surface of an object, uses a camera to capture the deformation of the pattern caused by the surface morphology of the object, and combines the principle of triangulation to calculate the three-dimensional coordinates of the object, ultimately generating a high-precision three-dimensional model.

[0027] Furthermore, the technical principle and core component of 3D structured light scanning Structured light projection uses a projector to project specific light patterns (such as stripes or coded graphics) onto the surface of an object. These patterns will deform due to the shape of the object surface. The degree of deformation of the light pattern is directly related to the depth information of the object surface. The three-dimensional coordinates can be derived by analyzing the deformation. Image capture and triangulation: A monocular or binocular camera captures the deformed light pattern, and the distance and angle of each point on the surface of the object are calculated by a triangulation algorithm based on the spatial position relationship between the projector and the camera to form point cloud data. Data processing and three-dimensional reconstruction: Generate a complete point cloud model by splicing multiple sets of scanning data, and then convert it into a polygonal mesh (such as an STL file) for applications such as reverse engineering, detection or 3D printing. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0028] In this embodiment, Figures 1 to 3 As shown, the driving member 350 is a five-axis robotic arm, which is connected to the sliding member 320 and the scanning member 310 and is used to drive the scanning member 310 to rotate relative to the rail 500 with the rail 500 as the center.

[0029] In order to realize the rotation of the scanning part 310 relative to the rail 500 and ensure that the scanning part 310 can stably realize detection during the rotation process, the scanning part 310 is installed on the active end of the five-axis robot. The five-axis robotic arm here is a common and easy-to-purchase equipment on the market. The five-axis robotic arm is electrically connected to the data processing component 400 to realize the automation and intelligence of the detection, which will not be elaborated here.

[0030] Furthermore, the sliding member 320 is slidably connected to the top of the frame 100 through a support frame, and the sliding member 320 is a common and easy-to-purchase slide on the market, which is used to ensure the stability of the scanning piece 310 sliding relative to the frame 100, and will not be described in detail here.

[0031] In this embodiment, Figure 1 , Figure 2 As shown, the conveying assembly 200 includes two roller members 210, and the roller members 210 have a fixed end and a rotating end. The fixed ends of the two roller members 210 are arranged at intervals along the guide of the frame 100 and are respectively connected to the frame 100, and the rotating ends of the two roller members 210 are respectively movably abutted against the rail 500.

[0032] The rotating end of the roller member 210 rotates relative to the fixed end thereof, and the rotating end of the roller member 210 abuts against the rail 500 to generate sliding friction, thereby pushing the rail 500 to move relative to the frame 100 .

[0033] Furthermore, the roller member 210 includes a shaft, a bearing, a roller body, etc. The roller member 210 is a common and easy-to-purchase device on the market, which is a conventional setting known to those skilled in the art and will not be described in detail here.

[0034] In one embodiment, guide rollers are provided on both sides of the roller, and the guide rollers on both sides can slide closer to or away from the rail 500 after adjustment, so as to guide or change the moving direction of the rail 500, which will not be elaborated here.

[0035] In one of the embodiments, in order to meet the detection needs of rails 500 of different specifications, a lifting roller is provided on one side of the roller member 210. The lifting of the roller is adjusted to meet the transportation needs of rails 500 of different specifications. No further details will be given here.

[0036] In this embodiment, as 3 to Figure 5 As shown, the first detection component 300 also includes at least one calibration component 330, which has multiple calibration points 331. The multiple calibration points 331 are evenly distributed along the circumferential direction of the rail 500 and are all connected to the frame 100 for cooperating with the scanning component 310 for linear scanning.

[0037] By setting calibration points 331 in the circumferential direction of the rail 500 as reference points during linear scanning, accurate positioning of the entire cross section of the rail 500 can be achieved, thereby improving detection accuracy.

[0038] In one embodiment, the calibration member 330 has a first fixed portion 332, a first abutting portion 333 and a calibration portion 334. The first fixed portion 332 is disposed between the two roller members 210 and connected to the frame 100. The first abutting portion 333 is rotatably connected to the first fixed portion 332 and can abut against the rail 500. The calibration portion 334 is connected to the first fixed portion 332. The calibration portion 334 is provided with a fixed channel 335 allowing the rail 500 to pass through. A plurality of calibration points 331 are arranged at intervals along the length direction of the fixed channel 335 and are respectively connected to the circumferential side walls of the fixed channel 335.

[0039] The first fixing portion 332 is used to connect and support the first abutting portion 333 and the calibration portion 334. The first abutting portion 333 can rotate relative to the first fixing portion 332 and abut against the rail 500 to avoid contact between the rail 500 and the calibration portion 334, thereby reducing the generation of errors and improving detection accuracy. The calibration portion 334 is provided with a fixed channel 335 to allow the rail 500 to pass through.

[0040] Furthermore, the first abutment portion 333 is a common and easily purchased roller on the market, which is connected to the first fixing portion 332 and rotates relative to the first fixing portion 332 to support the movement of the rail 500, which will not be described in detail here.

[0041] In one embodiment, if Figure 5 As shown, the marking portion 334 is further provided with a notch, which is communicated with the fixing channel 335 , and the first abutting portion 333 is embedded in the fixing channel 335 via the notch.

[0042] In order to reduce the volume of the device and optimize the structure of the calibration member 330 , the first abutting portion 333 is built into the fixing channel 335 through a notch and can form a support for the rail 500 .

[0043] Furthermore, the first abutment portion 333 may be one or two. One or two first abutment portions 333 are connected to the end of the fixed channel 335 and are arranged on the moving path of the rail 500 for abutting against the rail 500. No further details will be given here.

[0044] In one embodiment, if Figure 4 , Figure 5 As shown, the first detection component 300 also includes two clamping parts 340, which are respectively arranged on both sides of the fixed channel 335 and are respectively slidably connected to the first fixed part 332, and the two clamping parts 340 can respectively abut against the rail 500 after approaching each other.

[0045] By providing the clamping parts 340 that can slide relative to the first fixing part 332 on both sides of the first abutting part 333 , the two clamping parts 340 can slide close to or away from the rail 500 after adjustment, so as to guide or change the moving direction of the rail 500 .

[0046] Furthermore, the clamping part 340 here is a roller that is common and easy to purchase on the market. The rotating axis of the roller is vertically arranged, and is slidably connected to the first fixed part 332 through the sliding seat 341 and the linear drive structure 342. The extended end of the linear drive structure 342 is extended or shortened relative to its fixed end to drive the sliding seat 341 and the roller to move relative to the first fixed part 332, thereby realizing the clamping part 340 approaching or moving away from the rail 500. No further details will be given here.

[0047] Furthermore, the linear drive structure 342 here is a structure similar to a ball screw nut pair composed of a screw and a threaded hole. The rotation of the screw around its own axis can drive the sliding seat 341 to slide linearly relative to the first fixed part 332. The linear drive structure 342 here can also be a push rod motor, a cylinder and a hydraulic cylinder, which will not be elaborated here.

[0048] In one embodiment, the marking portion 334 is hollow.

[0049] The calibration part 334 is hollow and has a cage-like structure composed of a plurality of rods, which is used to reduce the weight of the calibration part 334 and prevent the side wall of the calibration part 334 from blocking the rail 500, thereby effectively improving the detection accuracy.

[0050] In one embodiment, the calibration portion 334 is in a strip shape, and a calibration channel is provided along the length direction of the calibration portion 334 . The support member is rotatably inserted into the calibration channel and abuts against the rail 500 .

[0051] The setting direction of the calibration channel is consistent with the length direction of the calibration portion 334, and the support member is built into the calibration channel to reduce the volume of the device.

[0052] In one embodiment, the cross section of the marking portion 334 is a regular polygon.

[0053] In order to improve the error of the calibration cage as a reference and improve the detection accuracy, the cross-section of the calibration portion 334 is a regular polygon.

[0054] Furthermore, the calibration portion 334 with a regular polygonal cross section not only has a uniform structure but also has a low production cost, thus meeting the requirements of industrial use.

[0055] In one embodiment, the cross section of the marking portion 334 is a regular hexagon.

[0056] Furthermore, the number of sides (e.g., six sides, eight sides, or twelve sides) is dynamically selected according to the detection requirements, and a high-stability material system is provided, which will not be elaborated here.

[0057] Furthermore, in the present device, one or two calibration points 331 are respectively arranged on the six sides of the calibration cage, and one or two calibration points 331 are arranged at intervals along the length direction of the calibration cage, which will not be described in detail here.

[0058] In this embodiment, the number of the first detection components 300 is one, two or three, and the user can make a reasonable selection according to the specific usage.

[0059] Furthermore, two adjacent calibration parts 334 are detachably connected via a fastening connection structure, wherein the fastening connection structure is a screw or bolt that is common and easy to purchase on the market, and will not be described in detail here.

[0060] In this embodiment, Figure 1 , Figure 6 As shown, the device also includes a second detection component 600, which includes a support body 610 and a plurality of image acquisition components 620. The support body 610 is arranged between the roller component 210 and the first fixing portion 332 of the calibration component 330, and is provided with a detection channel allowing the rail 500 to pass through. The plurality of image acquisition components 620 are arranged at intervals along the circumferential direction of the detection channel and are all connected to the support body 610.

[0061] By evenly arranging a plurality of image acquisition components 620 along the circumferential direction of the rail 500, it is possible to acquire image information of the surrounding areas when the rail 500 moves relative to the support body 610. Here, the image acquisition component 620 is a 2D camera or 3D camera that is common and easy to purchase on the market, and is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0062] In addition, in some embodiments, the second detection component 600 should also include a surface detection component, which can obtain the position data and light intensity data of the entire cross-section of the rail 500 based on the image or video information collected by the image acquisition component 620. The surface detection component here belongs to a conventional setting well known to technical personnel in this field and will not be elaborated here.

[0063] In one embodiment, if Figures 6 to 8 As shown, the support body 610 is hollow and a detection channel is formed in the middle. The support body 610 is welded by a plurality of steel materials arranged in a criss-cross pattern to form a hollow steel frame structure, and a detection channel is formed in the middle to allow the rail 500 to pass through. The hollow steel frame structure can reduce the dead weight and manufacturing cost of the surface detection device, and is convenient for construction and installation.

[0064] In one embodiment, if Figures 6 to 8 As shown, the number of image acquisition components 620 in the second detection component 600 is six, two image acquisition components 620 are arranged relative to the rail 500, and are respectively connected to the two opposite side walls of the detection channel, and the four image acquisition components 620 are a pair, and the two pairs of image acquisition components 620 are arranged relative to the rail 500, and are respectively connected to the other two opposite side walls of the detection channel.

[0065] Two image acquisition components 620 are respectively arranged directly above and directly below the rail 500. The four image acquisition components 620 are respectively grouped into two. The two groups of image acquisition components 620 are respectively arranged on the left side and right side of the rail 500. The two image acquisition components 620 located on the left side or right side of the rail 500 are spaced apart from each other and are respectively inclined relative to the support body 610 so that the image acquisition components 620 can face the rail 500 and surround the entire cross-section of the rail 500, so as to improve the accuracy of image detection.

[0066] In this embodiment, Figure 6 As shown, the second detection component 600 also includes at least one speed detection member 630, and the speed detection member 630 includes a second abutting portion 631 and a detection portion 632. The second abutting portion 631 is movably abutted against the rail 500 and can rotate relative to the support body 610. The detection portion 632 has a fixed end and a detection end. The fixed end of the detection portion 632 is connected to the support body 610, and the detection end is connected to the second abutting portion 631, and is used to detect the speed at which the second abutting portion 631 rotates relative to the support body 610.

[0067] The speed detection component 630 measures the passing speed of the rail 500, and the image acquisition component 620 can detect the surface quality of the rail 500. After obtaining the passing speed of the rail 500 and the surface quality information of the rail 500, the user can judge the quality problem points through the light intensity map, and then check the judgment result through the position size calibration, and finally obtain the surface quality detection result, which is conducive to improving the accuracy of the surface quality detection of the rail 500 before welding.

[0068] In addition, in some embodiments, the image acquisition component 620, the second abutment portion 631 and the detection portion 632 in the device are all electrically connected to the data processing component 400 to realize automation and intelligence of the detection, which will not be elaborated here.

[0069] In one embodiment, see Fig. 9 The speed detecting member 630 further includes a connecting portion 633 and an elastic portion 634 , a mounting plate 635 , a sliding portion 636 , a second fixing portion 637 and an adjusting portion 638 .

[0070] The second abutment portion 631 abuts against the rail 500, and when the rail 500 moves relative to the support body 610, it can drive the second abutment portion 631 to rotate relative to the support body 610. The detection end of the detection portion 632 detects the rotation speed of the second abutment portion 631 relative to the support body 610 and converts it into the moving speed of the rail 500 relative to the support body 610.

[0071] Furthermore, the second abutment portion 631 here includes an abutment wheel and a connecting shaft, which is rotatably connected to the support body 610, and the abutment wheel is fixedly sleeved on the connecting shaft and abuts against the rail 500. The detection portion 632 here is an encoder that is common and easy to purchase on the market. The encoder is connected to the support body 610, and the detection end of the encoder is connected to the connecting shaft, which is used to record and feedback the rotation speed of the abutment wheel. The encoder here can also be replaced by a sensor. This is a conventional setting known to those skilled in the art and will not be elaborated on.

[0072] In one embodiment, the mounting plate 635 is disposed above the rail 500 and connected to one side of the support body 610, one end of the connecting member is rotatably connected to the mounting plate 635, and the other end of the elastic portion 634 is spaced apart from one end of the connecting member and movably connected to the mounting plate 635.

[0073] The mounting plate 635 is connected to the supporting body 610 and is used for mounting the second abutting portion 631 , the detecting portion 632 , the connecting portion 633 , the elastic portion 634 , the sliding portion 636 , the second fixing portion 637 and the adjusting portion 638 .

[0074] In one embodiment, one end of the connecting portion 633 is rotatably connected to the support body 610, the fixed end of the detecting portion 632 is connected to the other end of the connecting portion 633, the detecting end is coaxially arranged with the rotation axis of the second abutting portion 631, and is connected to the second abutting portion 631, one end of the elastic portion 634 is hinged to the middle part of the connecting portion 633, and the other end is connected to the support body 610, for generating an elastic force that pushes the second abutting portion 631 to always flexibly abut against the rail 500.

[0075] The second abutment portion 631 and the detection portion 632 are rotatably connected to the support body 610 via the connection portion 633, and one end of the elastic portion 634 is hinged to the middle of the connection portion 633 and the other end is connected to the support body 610. The elastic force generated by the elastic portion 634 can push the connection portion 633 to rotate relative to the support body 610, and enable the second abutment portion 631 to always abut against the rail 500, thereby effectively improving the accuracy of detection.

[0076] Furthermore, the elastic part 634 here is a nitrogen spring that is common and easy to purchase on the market. The nitrogen spring can generate elastic force. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0077] In one embodiment, the connection portion 633 includes a rotating seat and a rotating rod. The rotating seat is fixedly connected to the mounting plate 635. One end of the rotating rod is provided with a second abutting portion 631 and a detection portion 632, and the other end is rotatably connected to the rotating seat.

[0078] In addition, the elastic part 634 can also be composed of a sliding rod and a spring with telescopic function. The spring is sleeved on the sliding rod and connected to the rotating rod and the mounting plate 635 to generate an elastic force that pushes the second abutting part 631 to always abut against the rail 500. No further details will be given here.

[0079] In one embodiment, see Fig. 9 The sliding portion 636 is slidably connected to the mounting plate 635 and is hinged to the other end of the elastic portion 634 , so as to drive the elastic portion 634 , the connecting portion 633 and the second abutting portion 631 to slide toward or away from the rail 500 .

[0080] The sliding portion 636 is used to achieve a sliding connection between the other end of the elastic portion 634 and the mounting plate 635 .

[0081] Furthermore, a threaded mounting hole is provided on the mounting plate 635, and the sliding part 636 includes a sliding block and a plurality of fastening bolts. The sliding block has a waist-shaped hole relative to the threaded mounting hole, and the threaded section of the fastening bolt passes through the waist-shaped hole and is threadedly connected to the threaded mounting hole, so that the sliding block can slide relative to the mounting plate 635. No further details will be given here.

[0082] In one embodiment, the second fixed portion 637 is fixedly connected to the mounting plate 635, the sliding portion 636 is spaced apart from the second fixed portion 637 and is slidably connected to the mounting plate 635, the adjusting portion 638 has a fixed end and a movable end, the fixed end of the adjusting portion 638 is connected to the second fixed portion 637, and the movable end is connected to the sliding portion 636, for driving the sliding portion 636 to slide relative to the mounting plate 635.

[0083] By providing the second fixing portion 637 and the adjusting portion 638 , the sliding portion 636 can slide relative to the second fixing portion 637 under the drive of the adjusting portion 638 .

[0084] In one embodiment, the second fixing portion 637 is provided with a threaded hole, and the adjusting portion 638 includes a connecting plate and a bolt, the connecting plate is connected to the sliding portion 636, the threaded section of the bolt is threadedly connected to the second fixing portion 637 and is rotatably connected to the connecting plate, and the rotation of the bolt around its axis can drive the sliding portion 636 to slide relative to the mounting plate 635.

[0085] The threaded holes on the connecting plate, the bolt and the second fixing part 637 form a linear drive structure 342 similar to a ball screw nut pair, so that the rotation of the bolt around its own axis can drive the linear movement of the connecting plate and the sliding part 636 relative to the second fixing part 637.

[0086] Furthermore, the adjustment part 638 here can also be a linear drive component, such as a cylinder, a hydraulic cylinder and a push rod motor. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0087] In one embodiment, see Figures 6 to 8 There are two speed detection components, two mounting plates 635 are respectively connected to the two sides of the support body 610, and two second abutment portions 631 are arranged along the guide intervals of the detection channel and are movably abutted against the rail 500 respectively.

[0088] Detection structures are provided on both sides of the support body 610, which can ensure that when measuring the rail head and rail tail of the rail 500, the speed of the rail 500 can be input through the electrical control component, thereby improving the accuracy of the detection.

[0089] In this embodiment, the data processing component is electrically connected to the roller component, the scanning component, the driving component, the sliding component, the plurality of image acquisition components and the speed detection component.

[0090] The data processing component here is a common and easily purchased device on the market, which is used to realize the automatic detection of rails. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0091] In order to better understand the present invention, the following Figures 1 to 9 The technical solution of the present invention is described in detail: The frame 100 is provided with a conveying component 200 for conveying the rail 500. The first detection component 300 includes a scanning component 310 and a sliding component 320. The scanning component 310 is slidably connected to the frame 100 via the sliding component 320, and is used to realize the scanning relative to the rail 500 and the guided sliding along the frame 100. The scanning component 310 can also rotate around the rail 500 with the rail 500 as the center, and is used to realize the scanning of the entire cross-section of the rail 500. The data processing component 400 is electrically connected to the conveying component 200, the scanning component 310 and the sliding component 320, and is used to realize automatic detection. Compared with the prior art, the scanning member 310 is slidably connected to the frame 100, so that the scanning member 310 can slide along the guide of the frame 100 relative to the rail 500. At the same time, driven by the driving member 350, the scanning member 310 can also rotate around the rail 500 with the rail 500 as the center, so that the scanning member 310 can scan the entire cross-section of the rail 500, avoiding fixing multiple laser profilers in the installation positioning ring, thereby reducing the number of laser profilers required by the detection system.

[0092] According to the specific working process of the present invention, the rail 500 is placed on the roller member 210 and abuts against the roller member 210. The friction between the roller member 210 and the rail 500 pushes the rail 500 to move relative to the support body 610. Then, when the rail 500 passes through the detection channel, the six image acquisition components 620 acquire images of the surface of the rail 500. At the same time, the second abutment portion 631 contacts the rail 500, which can drive the second abutment portion 631 to rotate relative to the support body 610, and the moving speed of the rail 500 is acquired by the detection portion 632. The speed detection component 630 measures the passing speed of the rail 500. The image acquisition component 620 can detect the surface quality of the rail 500. After obtaining the passing speed of the rail 500 and the surface quality information of the rail 500, the user can judge the quality problem points through the light intensity map, and then judge the result through the position size verification, and finally obtain the surface quality detection result, which is beneficial to improve the accuracy of the surface quality detection of the rail 500 before welding.

[0093] Furthermore, the rail 500 continues to move forward and enters the fixed channel 335 of the calibration portion 334. The rail 500 abuts against the first abutment portion 333, and through the friction between the roller member 210 and the rail 500, the rail 500 continues to be pushed to move relative to the frame 100. The sliding member 320 drives the five-axis robot arm and the scanning member 310 to slide relative to the frame 100 to scan the entire cross-section of the rail 500.

[0094] The device can solve the technical problem in the prior art that the detection system requires a large number of laser profilers due to the coordinated scanning area of ​​four adjustable laser profilers to cover the full cross-section scanning of the rail. The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A rail pre-welding detection system, characterized in that: include: frame; A conveying assembly, connected to the frame, for conveying rails; as well as The first detection component includes a scanning component, a driving component and a sliding component. The scanning component is arranged relative to the rail and is used to scan the rail. The driving component is connected to the scanning component and can drive the scanning component to rotate around the rail with the rail as the center. The sliding component is connected to the driving component and is slidably connected to the frame, and is used to drive the driving component and the scanning component to slide relative to the rail along the conveying direction of the rail.

2. The rail pre-welding detection system according to claim 1, characterized in that: The conveying assembly includes two roller members spaced apart from each other, each roller member having a fixed end and a rotating end, the fixed ends of the two roller members are respectively connected to the frame, and the rotating ends of the two roller members are used to respectively abut and transport the rails.

3. The rail pre-welding detection system according to claim 2, characterized in that: The first detection component also includes at least one calibration piece, which has a plurality of calibration points. The plurality of calibration points are evenly distributed along the circumferential direction of the rail and are all connected to the frame for cooperating with the scanning piece for linear scanning.

4. The rail pre-welding detection system according to claim 3, characterized in that: The calibration part comprises a first fixing part, a first abutting part and a calibration part, wherein the first fixing part is arranged between the two roller parts and connected to the frame, the first abutting part is rotatably connected to the first fixing part and can abut against the rail, the calibration part is connected to the first fixing part, and the calibration part is provided with a fixed channel allowing the rail to pass through, and a plurality of calibration points are arranged at intervals along the length direction of the fixed channel and are respectively connected to the circumferential side walls of the fixed channel.

5. The rail pre-welding detection system according to claim 4, characterized in that: The marking portion is further provided with a notch, the notch is communicated with the fixing channel, and the first abutting portion is built into the fixing channel via the notch.

6. The rail pre-welding detection system according to claim 4, characterized in that: The first detection component also includes two clamping parts, which are respectively arranged on both sides of the fixed channel and are respectively slidably connected to the first fixed part, and the two clamping parts can respectively abut against the rails after being close to each other.

7. The rail pre-welding detection system according to claim 4, characterized in that: It also includes a second detection component, which includes a support body and a plurality of image acquisition components. The support body is spaced apart from the roller component and is provided with a detection channel allowing the rail to pass through. The plurality of image acquisition components are spaced apart along the circumferential direction of the detection channel and are all connected to the support body.

8. The rail pre-welding detection system according to claim 7, characterized in that: The number of the image acquisition components in the second detection component is six, two of which are arranged relative to the rail and are respectively connected to the two opposite side walls of the detection channel, and the four image acquisition components form a pair of two, and the two pairs of image acquisition components are arranged relative to the rail and are respectively connected to the other two opposite side walls of the detection channel.

9. The rail pre-welding detection system according to claim 7, characterized in that: The second detection assembly also includes at least one speed detection component, which is arranged relative to the rail and connected to the frame for detecting the translational speed of the rail relative to the frame.

10. The rail pre-welding detection system according to claim 1, characterized in that: It also includes a data processing component, which is electrically connected to the roller component, the scanning component, the driving component, the sliding component, the multiple image acquisition components and the speed detection component.

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