Pantograph carbon slide plate detection equipment

Abstract

A pantograph carbon slide plate detection device comprises a working platform, a motion platform and a detection unit. The working platform comprises a detection table and a mounting frame erected on the detection table, the motion platform is arranged on the detection table, and the detection unit is arranged on the mounting frame and located above the motion platform; the detection unit comprises a front end transverse plate, a rear end transverse plate, a concentric-square-shaped support, a mounting rod, a first laser, a second laser, a first reflective mirror, a second reflective mirror, a third reflective mirror, a first camera and a second camera. According to the utility model, the upper and lower surfaces and the side surfaces of the carbon slide plate can be scanned by designing multiple groups of lasers matched with the reflectors, and multiple groups of cameras and multiple groups of reflectors are matched to capture photos, so that dead-corner-free comprehensive information acquisition of the surface of the carbon slide plate can be realized, and the detection precision and the detection efficiency are extremely high; the detection effect is very comprehensive and reliable; the utility model has the advantages of strong practicability and strong popularization significance.

Description

Technical Field

[0001] The utility model relates to the technical field of train track detection, in particular to a pantograph carbon slide plate detection device. Background Art

[0002] The pantograph is an important part of the electric traction locomotive. Its main function is to obtain electrical energy from the contact network and guide the electricity to the electric drive part. The state of the pantograph will directly affect the current-carrying capacity of the electric traction locomotive, which may lead to huge safety hazards. The carbon slide plate on the pantograph is the core structure to ensure the normal operation of the pantograph. It is in direct contact with the surface of the contact network, and the two are directly rubbed to supply power when the train is running. Therefore, it is very necessary to conduct convenient, fast and accurate detection of the pantograph carbon slide plate.

[0003] Most of the existing pantograph carbon slide plate detection is online detection, which uses image processing technology, through the online monitoring camera with flash, to take pictures of the pantograph when the pantograph passes the infrared sensor, and then analyzes the captured image through software, and finally obtains the status information of the pantograph, especially the carbon slide plate. Although this detection method is simple, easy to deploy and low-cost, it cannot quantitatively analyze the size of the fallen blocks, and is greatly affected by environmental factors such as rain, and is prone to misidentification. Of course, some people also use manual measurement methods, but manual detection is not only costly and inefficient, but also has human errors, is difficult to quantify, and is prone to misjudgment. Utility Model Content

[0004] Based on this, it is necessary to provide a pantograph carbon slide plate detection device to address the deficiencies in the prior art.

[0005] A pantograph carbon slide plate detection device, which includes a working platform, a moving platform and a detection unit. The working platform includes a detection platform and a mounting frame standing on the detection platform, the moving platform is installed on the detection platform, and the detection unit is installed on the mounting frame and is located above the moving platform. The detection unit includes a front cross plate, a rear cross plate, a circular bracket, a mounting rod, a first laser, a second laser, a first reflector, a second reflector, a third reflector, a first camera and a second camera. The front cross plate and the rear cross plate are both installed on the upper end of the mounting frame and are arranged front and back relative to each other. The circular bracket is installed on the inner bottom of the rear cross plate. The circular bracket is designed in a "7" shape. The mounting rod stands on the detection platform and is located below the circular bracket. The first laser and the second laser are respectively installed at the upper and lower ends of the circular bracket, and the two are arranged diagonally opposite to each other. The first reflector is installed at the bottom of the rear horizontal plate and is located on the right side of the first laser, the second reflector is installed at the bottom of the front horizontal plate and is located on the left side of the first laser, and the third reflector is installed at the upper end of the mounting rod and is located below the second laser. The first camera is installed at the bottom of the rear horizontal plate and is located on the left side of the first laser, and the first camera is also arranged opposite to the first reflector, the second camera is installed at the bottom of the front horizontal plate and is located on the right side of the first laser, and the second camera is also arranged opposite to the second reflector.

[0006] Furthermore, a first mounting through hole and a first angle adjustment through hole are provided at both ends of the circular bracket. The first angle adjustment through hole is arc-shaped and surrounds the outer periphery of the first mounting through hole. The first laser and the second laser are both fixed by screwing through the first mounting through hole and the first angle adjustment through hole.

[0007] Furthermore, the detection unit also includes a plurality of first fixed connection structures, which are respectively mounted on the bottom of the front end horizontal plate, the rear end horizontal plate and the upper end of the mounting rod, and the first reflector, the second reflector and the third reflector are respectively mounted on the plurality of first fixed connection structures.

[0008] Furthermore, the first fixed connection structure includes a connecting shaft and a first connecting plate and a second connecting plate respectively arranged on both sides of the connecting shaft, the first connecting plate and the second connecting plate are both designed in an "L" shape, and one end of the first connecting plate is provided with a second mounting through hole and a second angle adjustment through hole, and the other end is provided with a third angle adjustment through hole, one end of the second connecting plate is provided with a third mounting through hole, and the other end is provided with a fourth mounting through hole and a fourth angle adjustment through hole, the first connecting plate and the second connecting plate are respectively fixed to the two ends of the connecting shaft by means of screws through the third angle adjustment through hole and the third mounting through hole.

[0009] Furthermore, the detection unit also includes a second fixed connection structure, and a plurality of the second fixed connection structures are respectively installed on the bottom of the front end horizontal plate and the rear end horizontal plate, and the first camera and the second camera are respectively installed on the plurality of the second fixed connection structures.

[0010] Furthermore, the second fixed connection structure includes a fixed shaft, a first rotating shaft and a second rotating shaft, the fixed shaft is fixedly mounted on the bottom of the front end horizontal plate or the rear end horizontal plate, the first rotating shaft is axially connected to the fixed shaft and can rotate movably, the second rotating shaft is axially connected to the first rotating shaft and can rotate movably, and the first camera or the second camera is fixedly mounted on the second rotating shaft.

[0011] Furthermore, the motion platform includes a module base plate, an X-axis linear slide, a Y-axis linear slide, a calibration plate seat and a calibration plate. The module base plate is fixedly mounted on the detection platform, the X-axis linear slide is mounted on the module base plate and is located on the front side of the mounting frame, the Y-axis linear slide is snap-fitted and mounted on the X-axis linear slide and can slide left and right, the calibration plate seat is snap-fitted and mounted on the Y-axis linear slide and can slide forward and backward, and the calibration plate is mounted on one side of the calibration plate seat.

[0012] Furthermore, the side section of the calibration plate is designed as a parallelogram, one end of the calibration plate is fixedly mounted on one side of the calibration plate seat, and the plate surface of the calibration plate is arranged to be inclined downward. The upper and lower surfaces of the calibration plate are also provided with a plurality of characteristic circles.

[0013] Furthermore, the wavelengths of the lasers emitted by the first laser and the second laser are different.

[0014] Furthermore, the working platform also includes a plurality of universal wheels, and the plurality of universal wheels are all installed at the bottom of the testing platform.

[0015] To sum up, the beneficial effects of the pantograph carbon skateboard detection equipment of the utility model are: by designing multiple groups of lasers in conjunction with reflectors, the upper and lower surfaces and sides of the carbon skateboard can be scanned, and then multiple groups of cameras and multiple groups of reflectors are used to capture photos, thereby realizing comprehensive information collection of the carbon skateboard surface without blind spots, not only with extremely high detection accuracy and efficiency, but also with very comprehensive and reliable detection effects; the adjustable design of the circular bracket and the fixed connection structure enables the equipment to adjust the angles of the laser, reflector and camera, so as to adapt to the detection of carbon skateboards of different models; the motion platform is designed with an XY dual-axis linear slide structure, which can drive the carbon skateboard to move back and forth and left and right in the horizontal direction, so that the detection equipment can quickly and accurately collect the image of the entire carbon skateboard; the design of the calibration plate in conjunction with the laser for calibration can greatly optimize the algorithm flow expressed by the system; the utility model is highly practical and has a strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a pantograph carbon slide plate detection device of the utility model;

[0017] Figure 2 for Figure 1 The structural diagram of the working platform in the middle;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of the medium motion platform;

[0019] Figure 4 for Figure 3 Schematic diagram of the structure of the calibration board;

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the detection unit;

[0021] Figure 6 for Figure 5 A schematic diagram of the structure of the circular bracket;

[0022] Figure 7 for Figure 5 A schematic diagram of an exploded structure of the first fixed connection structure;

[0023] Figure 8 for Figure 5 Schematic diagram of the exploded structure of the second fixed connection structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] like Figures 1 to 8 As shown, the utility model provides a pantograph carbon slide plate detection device 100, which includes a working platform 10, a moving platform 20 and a detection unit 30. The working platform 10 includes a detection table 11 and a mounting frame 12 standing on the detection table 11, the moving platform 20 is installed on the detection table 11, and the detection unit 30 is installed on the mounting frame 12 and is located above the moving platform 20. It can be understood that the utility model also includes a number of driving devices, fixing fixtures and automatic analysis and control systems, which are conventional technical contents in the technical field and are not described in detail.

[0026] The motion platform 20 includes a module base plate 21, an X-axis linear slide 22, a Y-axis linear slide 23, a calibration plate seat 24 and a calibration plate 25. The module base plate 21 is fixedly mounted on the detection platform 11, the X-axis linear slide 22 is mounted on the module base plate 21 and is located at the front side of the mounting frame 12, the Y-axis linear slide 23 is snap-fitted and mounted on the X-axis linear slide 22 and can slide left and right, the calibration plate seat 24 is snap-fitted and mounted on the Y-axis linear slide 23 and can slide forward and backward, and the calibration plate 25 is mounted on one side of the calibration plate seat 24. The motion platform 20 provided with the X-axis linear slide 22 and the Y-axis linear slide 23 can drive the carbon slide plate to move horizontally in the left-right direction or the front-back direction, thereby realizing the rapid overall scanning of the carbon slide plate by the laser, which greatly improves the detection efficiency of the carbon slide plate.

[0027] The side section of the calibration plate 25 is designed in a parallelogram shape. One end of the calibration plate 25 is fixedly mounted on one side of the calibration plate seat 24, and the plate surface of the calibration plate 25 is tilted downward. The upper and lower surfaces of the calibration plate 25 are also provided with a plurality of characteristic circles 251. Specifically, in the present embodiment, the distance between the left and right ends of the calibration plate 25 is 130 mm, the distance between the front and rear ends is 80 mm, the vertical distance between the upper and lower ends is 20 mm, and the plate surface of the calibration plate 25 is tilted downward at an angle of 30°. The plurality of characteristic circles 251 on the upper and lower surfaces of the calibration plate 25 are evenly arranged in 13 rows and 8 columns. The diameters of the plurality of characteristic circles 251 are all 5 mm, and the center distance between any two adjacent characteristic circles 251 is 10 mm. The center distance of the characteristic circle 251 located at the edge of the calibration plate 25 is 5 mm from the edge of the calibration plate 25.

[0028] When the system calibration begins, two lasers of different wavelengths are first projected onto the calibration plate 25, the motion platform 20 is used to move the calibration plate 25, and a series of images are collected by the camera. Then, the center line of the light streak image is extracted using the light streak center extraction algorithm, and these center lines can be superimposed to form a line structured light plane image, and the three-dimensional world coordinates of the feature points of the calibration plate 25 and the two-dimensional pixel coordinates corresponding to the line structured light plane image are calculated.

[0029] The inverse bilinear interpolation method is then used to calculate the conversion relationship between the pixel coordinate system and the world coordinate system and generate a lookup table. The position of the three-dimensional world coordinate value in the lookup table corresponds to the row and column position of the two-dimensional pixel coordinate, that is, the corresponding three-dimensional world coordinate can be quickly obtained through the lookup table. This system calibration method does not require camera calibration and only involves the conversion of two coordinate systems without matrix operations, which greatly optimizes the efficiency of system calibration and can also well guarantee the calibration accuracy.

[0030] The detection unit 30 includes a front transverse plate 31, a rear transverse plate 32, a round bracket 33, a mounting rod 34, a first laser 35a, a second laser 35b, a first reflector 36a, a second reflector 36b, a third reflector (not shown), a first camera 37a and a second camera 37b. The front transverse plate 31 and the rear transverse plate 32 are both mounted on the upper end of the mounting frame 12 and are arranged front and back relative to each other, the round bracket 33 is mounted on the inner bottom of the rear transverse plate 32, and the round bracket 33 is designed in a "7" shape structure, and the mounting rod 34 stands on the detection platform 11 and is located below the round bracket 33.

[0031] The first laser 35a and the second laser 35b are respectively mounted at the upper and lower ends of the round bracket 33, and the two are arranged diagonally opposite to each other. The first reflector 36a is mounted at the bottom of the rear end horizontal plate 32 and is located on the right side of the first laser 35a, the second reflector 36b is mounted at the bottom of the front end horizontal plate 31 and is located on the left side of the first laser 35a, and the third reflector is mounted at the upper end of the mounting rod 34 and is located below the second laser 35b.

[0032] The first camera 37a is installed at the bottom of the rear end horizontal plate 32 and is located on the left side of the first laser 35a. The first camera 37a is also arranged opposite to the first reflector 36a. The second camera 37b is installed at the bottom of the front end horizontal plate 31 and is located on the right side of the first laser 35a. The second camera 37b is also arranged opposite to the second reflector 36b.

[0033] When the carbon slide plate is inspected, the first laser 35a and the second laser 35b start working respectively. The laser emitted by the first laser 35a directly irradiates the upper surface of the carbon slide plate, while the laser emitted by the second laser 35b is refracted to the lower surface and the side of the carbon slide plate through the third reflector. The direct laser and the laser refracted by the reflector and changed in angle can surround the carbon slide plate in a circumferential direction, thereby realizing a comprehensive scan of the carbon slide plate without blind spots.

[0034] While the laser is scanning, the first camera 37a and the second camera 37b begin to capture images of the surface of the carbon slide. However, in the present invention, the camera lens does not directly focus on the surface of the carbon slide to capture images, but reflects the image of the upper surface of the carbon slide to the second camera 37b through the second reflector 36b; the images of the side and lower surfaces of the carbon slide are reflected to the first camera 37a through the third reflector and the first reflector 36a, so that the camera captures the upper surface, side surface and lower surface of the carbon slide. This image acquisition method can better set the camera angle, so that it can more comprehensively capture the overall image of the carbon slide.

[0035] The first mounting through hole 331 and the first angle adjustment through hole 332 are provided at both ends of the circular bracket 33. The first angle adjustment through hole 332 is designed in an arc shape and surrounds the periphery of the first mounting through hole 331. The first laser 35a and the second laser 35b are both screwed and fixed by the first mounting through hole 331 and the first angle adjustment through hole 332. The circular bracket 33 provided with the first angle adjustment through hole 332 can realize the angle adjustment of the first laser 35a and the second laser 35b by sliding adjustment between the fixing bolt and the through hole, so that the laser emitted by the laser can adapt to the scanning of carbon slide plates of different models and specifications.

[0036] The detection unit 30 further includes a plurality of first fixed connection structures 38 and a second fixed connection structure 39. The plurality of first fixed connection structures 38 are respectively mounted on the bottom of the front transverse plate 31 and the rear transverse plate 32 and the upper end of the mounting rod 34, and the first reflector 36a, the second reflector 36b and the third reflector are respectively mounted on the plurality of first fixed connection structures 38. The plurality of second fixed connection structures 39 are respectively mounted on the bottom of the front transverse plate 31 and the rear transverse plate 32, and the first camera 37a and the second camera 37b are respectively mounted on the plurality of second fixed connection structures 39.

[0037] The first fixed connection structure 38 includes a connection shaft 381 and a first connection piece 382 and a second connection piece 383 respectively arranged on both sides of the connection shaft 381. The first connection piece 382 and the second connection piece 383 are both designed in an "L" shape. One end of the first connection piece 382 is provided with a second mounting through hole 382a and a second angle adjustment through hole 382b, and the other end is provided with a third angle adjustment through hole 382c. One end of the second connection piece 383 is provided with a third mounting through hole 383a, and the other end is provided with a fourth mounting through hole 383b and a fourth angle adjustment through hole 383c. The first connection piece 382 and the second connection piece 383 are respectively fixed by screwing with the two ends of the connection shaft 381 through the third angle adjustment through hole 382c and the third mounting through hole 383a. The first fixed connection structure 38 with angle adjustment through holes can realize the angle adjustment of each reflector through the matching adjustment between the bolt structure and the through hole, and can further reflect lasers or surface images at different angles to adapt to the detection of carbon slide plates of different models and specifications.

[0038] The second fixed connection structure 39 includes a fixed shaft 391, a first rotating shaft 392 and a second rotating shaft 393. The fixed shaft 391 is fixedly mounted on the bottom of the front horizontal plate 31 or the rear horizontal plate 32. The first rotating shaft 392 is axially connected to the fixed shaft 391 and can be rotatable. The second rotating shaft 393 is axially connected to the first rotating shaft 392 and can be rotatable. The first camera 37a or the second camera 37b is fixedly mounted on the second rotating shaft 393. The second fixed connection structure 39 is designed with multiple rotatable joint structures, which can realize the angle adjustment of each camera lens through rotation adjustment, thereby realizing the acquisition of images at different angles to adapt to the detection of carbon slide plates of different models and specifications.

[0039] Specifically, in this embodiment, the wavelengths of the lasers emitted by the first laser 35a and the second laser 35b are different. Setting lasers of different wavelengths to scan different areas on the surface of the carbon slide enables the detection equipment to quickly match the collected image with the surface area of ​​the carbon slide, thereby improving the recognition and detection efficiency of the detection equipment. Lasers of different wavelengths can also avoid the problem of interference between light beams that affects the detection results. The work platform 10 also includes a number of universal wheels 13, and the plurality of universal wheels 13 are installed at the bottom of the detection platform 11. The work platform 10 provided with universal wheels 13 is more convenient for the mobile transportation of the detection equipment.

[0040] To sum up, the beneficial effects of the pantograph carbon skateboard detection device 100 of the utility model are: by designing multiple groups of lasers in conjunction with reflectors, the upper and lower surfaces and sides of the carbon skateboard can be scanned, and then multiple groups of cameras and multiple groups of reflectors are used to capture photos, so as to realize comprehensive information collection of the carbon skateboard surface without blind spots, not only the detection accuracy and detection efficiency are extremely high, but also the detection effect is very comprehensive and reliable; the adjustable design of the circular bracket 33 and the fixed connection structure enables the equipment to adjust the angles of the laser, reflector and camera, so as to adapt to the detection of carbon skateboards of different models; the motion platform 20 is designed with an XY dual-axis linear slide structure, which can drive the carbon skateboard to move forward, backward, left and right in the horizontal direction, so that the detection equipment can quickly and accurately collect the image of the entire carbon skateboard; the calibration plate 25 is designed to cooperate with the laser for calibration, which can greatly optimize the algorithm process expressed by the system; the utility model is highly practical and has a strong promotion significance.

[0041] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pantograph carbon slide plate detection device, characterized in that: It includes a working platform, a moving platform and a detection unit; the working platform includes a detection platform and a mounting frame standing on the detection platform, the moving platform is installed on the detection platform, and the detection unit is installed on the mounting frame and is located above the moving platform; the detection unit includes a front end horizontal plate, a rear end horizontal plate, a circular bracket, a mounting rod, a first laser, a second laser, a first reflector, a second reflector, a third reflector, a first camera and a second camera; the front end horizontal plate and the rear end horizontal plate are both installed on the upper end of the mounting frame and are arranged front and back relative to each other, the circular bracket is installed on the inner bottom of the rear end horizontal plate, and the circular bracket is designed in a "7" shape structure, the mounting rod stands on the detection platform and is located at the circular bracket. shaped bracket; the first laser and the second laser are respectively mounted at the upper and lower ends of the circular bracket, and the two are arranged diagonally opposite to each other; the first reflector is mounted at the bottom of the rear end horizontal plate and is located on the right side of the first laser, the second reflector is mounted at the bottom of the front end horizontal plate and is located on the left side of the first laser, and the third reflector is mounted at the upper end of the mounting rod and is located below the second laser; the first camera is mounted at the bottom of the rear end horizontal plate and is located on the left side of the first laser, and the first camera is also arranged opposite to the first reflector on the left and right, the second camera is mounted at the bottom of the front end horizontal plate and is located on the right side of the first laser, and the second camera is also arranged opposite to the second reflector on the left and right.

2. The pantograph carbon slide plate detection device according to claim 1, characterized in that: The first mounting through hole and the first angle adjustment through hole are provided at both ends of the circular bracket. The first angle adjustment through hole is arc-shaped and surrounds the outer periphery of the first mounting through hole. The first laser and the second laser are both screwed and fixed by the first mounting through hole and the first angle adjustment through hole.

3. The pantograph carbon slide plate detection device according to claim 1, characterized in that: The detection unit also includes a plurality of first fixed connection structures, which are respectively mounted on the bottom of the front end horizontal plate, the rear end horizontal plate and the upper end of the mounting rod, and the first reflector, the second reflector and the third reflector are respectively mounted on the plurality of first fixed connection structures.

4. The pantograph carbon slide plate detection device according to claim 3, characterized in that: The first fixed connection structure includes a connecting shaft and a first connecting plate and a second connecting plate respectively arranged on both sides of the connecting shaft. The first connecting plate and the second connecting plate are both designed in an "L" shape, and one end of the first connecting plate is provided with a second mounting through hole and a second angle adjustment through hole, and the other end is provided with a third angle adjustment through hole. One end of the second connecting plate is provided with a third mounting through hole, and the other end is provided with a fourth mounting through hole and a fourth angle adjustment through hole. The first connecting plate and the second connecting plate are respectively fixed to the two ends of the connecting shaft by means of screws through the third angle adjustment through hole and the third mounting through hole.

5. The pantograph carbon slide plate detection device according to claim 1, characterized in that: The detection unit also includes a second fixed connection structure, and a plurality of the second fixed connection structures are respectively installed at the bottom of the front end horizontal plate and the rear end horizontal plate, and the first camera and the second camera are respectively installed on the plurality of the second fixed connection structures.

6. The pantograph carbon slide plate detection device according to claim 5, characterized in that: The second fixed connection structure includes a fixed shaft, a first rotating shaft and a second rotating shaft. The fixed shaft is fixedly installed at the bottom of the front end horizontal plate or the rear end horizontal plate. The first rotating shaft is axially connected to the fixed shaft and can rotate movably. The second rotating shaft is axially connected to the first rotating shaft and can rotate movably. The first camera or the second camera is fixedly installed on the second rotating shaft.

7. The pantograph carbon slide plate detection device according to claim 1, characterized in that: The motion platform includes a module base plate, an X-axis linear slide, a Y-axis linear slide, a calibration plate seat and a calibration plate; The module base plate is fixedly mounted on the detection table, the X-axis linear slide is mounted on the module base plate and is located on the front side of the mounting frame, the Y-axis linear slide is snap-fitted and mounted on the X-axis linear slide and can slide left and right, the calibration plate seat is snap-fitted and mounted on the Y-axis linear slide and can slide back and forth, and the calibration plate is mounted on one side of the calibration plate seat.

8. The pantograph carbon slide plate detection device according to claim 7, characterized in that: The side section of the calibration plate is designed as a parallelogram. One end of the calibration plate is fixedly mounted on one side of the calibration plate seat, and the plate surface of the calibration plate is arranged to be inclined downward. The upper and lower surfaces of the calibration plate are also provided with a plurality of characteristic circles.

9. The pantograph carbon slide plate detection device according to claim 1, characterized in that: The wavelengths of the lasers emitted by the first laser and the second laser are different.

10. The pantograph carbon slide plate detection device according to claim 1, characterized in that: The working platform also includes a plurality of universal wheels, and the plurality of universal wheels are all installed at the bottom of the testing platform.

Images