Non-contact measuring device for wear degree of pantograph carbon contact strip

Abstract

The utility model discloses a non-contact measuring device for the wear degree of a pantograph carbon contact strip, which relates to the technical field of pantograph carbon contact strip detection and comprises a measuring unit and a fixing unit. A first motor output shaft is fixedly installed at one end of the first threaded rod, and a sliding rod is fixedly installed on the inner side of the support. Non-contact measurement is adopted, the surface of the carbon sliding plate cannot be scratched in the inspection process, the speed is higher than that of manual measurement, a polarized lens is installed at the laser receiving end of the laser triangular sensor, light can be filtered through the polarized lens, and therefore the accuracy of data is guaranteed; the shooting effect of the camera on a shadow area is improved through light supplementing of the lamp beads, and through interaction and complementation of laser scanning and camera shooting, detection of the abrasion degree of the carbon sliding plate is more comprehensive, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of pantograph carbon strip detection technology, and in particular to a non-contact measuring device for the wear degree of pantograph carbon strip. Background Technology

[0002] The carbon sliding plate of the pantograph is an important current-collecting component in the power supply system of electric locomotives. It is installed on top of the pantograph and is in direct contact with the overhead contact line. The carbon sliding plate draws current from the overhead contact line when stationary or sliding, supplying power to the locomotive.

[0003] Traditional carbon skateboard detection technology has the following core problems:

[0004] 1. Low efficiency and easy to damage the surface: It relies on manual visual inspection or contact measuring tools (such as micrometers), which has low inspection efficiency. Contact measurement may scratch the surface of carbon slide plate, affecting its performance and life.

[0005] 2. Insufficient accuracy and limited functionality:

[0006] Manual visual inspection cannot quantify the amount of wear, and a single sensor can only measure local thickness, making it difficult to comprehensively assess wear distribution or surface defects (such as cracks and ablation).

[0007] 3. Existing contactless solutions are either costly or have poor anti-interference capabilities:

[0008] High-precision 3D scanning equipment is expensive, and the carbon slide surface is prone to reflection due to its metallic composition, which causes the optical sensor to be affected by ambient light, resulting in poor data stability. Utility Model Content

[0009] This utility model discloses a non-contact measuring device for the wear degree of the carbon sliding plate of the pantograph, which aims to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A non-contact measuring device for the wear degree of a pantograph carbon sliding plate includes a measuring unit and a fixing unit:

[0012] The measuring unit includes a bracket, on which a first threaded rod is rotatably mounted. A first motor output shaft is fixedly mounted at one end of the first threaded rod. A slide rod is fixedly mounted on the inner side of the bracket. A support plate is fixedly mounted on the inner side of the bracket and below the slide rod. A threaded sleeve is threadedly mounted on the outer wall of the first threaded rod. A side plate is fixedly mounted on one side of the threaded sleeve. A microcontroller is fixedly mounted on the other side of the threaded sleeve away from the side plate. A laser triangulation sensor is rotatably mounted on one end of the side plate. A camera is fixedly mounted on one side of the laser triangulation sensor. An electric telescopic rod is hinged to one side of the camera. The other end of the electric telescopic rod is hinged to the side plate.

[0013] The fixing unit includes a placement platform, a clamping block is slidably installed on the top of the placement platform, the inner side of the clamping block holds the carbon slide plate body, a second motor is fixedly installed at the bottom of the placement platform, a second threaded rod is fixedly installed at the output end of the second motor, a connecting rod is threaded on the outer wall of the second threaded rod, and an mounting plate is rotatably installed at one end of the second threaded rod. The top of the mounting plate is fixedly installed with the placement platform.

[0014] In a preferred embodiment, a polarizing lens is fixedly mounted on the laser receiving end of the laser triangulation sensor, and an LED bead is fixedly mounted on the bottom of the camera.

[0015] In a preferred embodiment, the laser triangulation sensor is electrically mounted to the microcontroller input terminal, and the camera is electrically mounted to the microcontroller input terminal.

[0016] In a preferred embodiment, the placement platform has a placement slot inside, and a magnetic strip is fixedly installed at the top of the placement slot. The carbon slide body is magnetically attached to the top of the magnetic strip.

[0017] In a preferred embodiment, there are two second threaded rods, each with a positive and negative thread, and the two second threaded rods are fixedly mounted on the two output shafts of the second motor.

[0018] In a preferred embodiment, the connecting rod has a through groove inside, and a cylinder is fixedly installed at the bottom of the mounting plate. The cylinder is slidably installed with the connecting rod through the through groove.

[0019] As can be seen from the above, the non-contact measuring device for the wear degree of the pantograph carbon sliding plate provided by this utility model has the following technical effects.

[0020] Firstly, it adopts non-contact measurement, which will not scratch the surface of the carbon slide plate during the inspection process and is faster than manual measurement. A polarizing lens is installed at the laser receiver of the laser triangular sensor to filter the light and ensure the accuracy of the data. At the same time, LED beads are installed on the outer ring of the camera lens to improve the camera's shooting effect in shadow areas. Through the interaction of laser scanning and imaging, they complement each other and benefit each other, making the detection of wear on the carbon slide plate more comprehensive and applicable to a wider range.

[0021] Secondly, the laser triangulation sensor scans the carbon skateboard body, and the scanned data is transmitted to the microcontroller. The camera then captures images of the wear locations. During scanning, the first motor drives the first threaded rod to rotate, thereby moving the laser triangulation sensor and the camera to scan and capture the entire carbon skateboard body. Simultaneously, the rotation of the laser triangulation sensor can be adjusted by extending and retracting the electric telescopic rod, thus changing the laser incident angle. A larger angle, such as 60°-75°, can be selected for anti-reflective interference, while a smaller angle, such as 30°-45°, can be selected for high-resolution detection, thus adapting to the needs of different detection areas. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure proposed in this utility model;

[0023] Figure 2 The present utility model proposes Figure 1 Enlarged structural diagram at point A in the middle;

[0024] Figure 3 This is a top view of the structure proposed in this utility model;

[0025] Figure 4 This is an enlarged structural diagram of a portion of the cross-section proposed in this utility model;

[0026] Figure 5 This is a partial structural schematic diagram of the present invention.

[0027] In the attached diagram: 100, measuring unit; 200, fixing unit; 101, bracket; 102, first threaded rod; 103, first motor; 104, slide bar; 105, support plate; 106, laser triangulation sensor; 107, camera; 108, electric telescopic rod; 109, side plate; 110, threaded sleeve; 111, microcontroller; 201, placement platform; 202, clamping block; 203, carbon slide body; 204, second motor; 205, second threaded rod; 206, connecting rod; 207, mounting plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Reference Figures 1-5 A non-contact measuring device for the wear degree of a pantograph carbon sliding plate includes a measuring unit 100 and a fixing unit 200.

[0031] The measuring unit 100 includes a bracket 101. A first threaded rod 102 is rotatably mounted inside the bracket 101. The output shaft of a first motor 103 is fixedly mounted at one end of the first threaded rod 102, providing power for the rotation of the first threaded rod 102 via the first motor 103. A slide rod 104 is fixedly mounted inside the bracket 101 to limit the rotation of the threaded sleeve 110. A support plate 105 is fixedly mounted inside the bracket 101 and below the slide rod 104. The threaded sleeve 110 is threaded onto the outer wall of the first threaded rod 102, and the support plate 105 provides bottom support for the threaded sleeve 110. A side plate 109 is fixedly mounted on one side of the threaded sleeve 110, and a single piece is fixedly mounted on the other side of the threaded sleeve 110 away from the side plate 109. The machine 111 has a laser triangulation sensor 106 fixedly mounted and rotatably mounted on one end of the side plate 109. The rotation of the first threaded rod 102 drives the laser triangulation sensor 106 and the camera 107 to move, which facilitates the overall scanning of the carbon slide plate. The camera 107 is fixedly mounted on one side of the laser triangulation sensor 106. An electric telescopic rod 108 is hinged to one side of the camera 107. The other end of the electric telescopic rod 108 is hinged to the side plate 109. The angle of the laser triangulation sensor 106 is adjusted by the extension and retraction of the electric telescopic rod 108, thereby changing the incident angle of the laser. By adjusting the incident angle, it switches between anti-glare interference and high-resolution detection, thereby avoiding the problem of inaccurate laser measurement caused by light reflection to a certain extent.

[0032] The fixing unit 200 includes a placement platform 201. A clamping block 202 is slidably mounted on the top of the placement platform 201. The inner side of the clamping block 202 clamps the carbon slide plate body 203. A second motor 204 is fixedly mounted on the bottom of the placement platform 201. A second threaded rod 205 is fixedly mounted on the output end of the second motor 204. A connecting rod 206 is threaded onto the outer wall of the second threaded rod 205. A mounting plate 207 is rotatably mounted on one end of the second threaded rod 205. The top of the mounting plate 207 is fixedly mounted to the placement platform 201. By clamping the carbon slide plate body 203, the problem of inaccurate detection results caused by the shaking of the carbon slide plate body 203 during detection is avoided. The clamping blocks 202 on both sides approaching at the same time can also keep the carbon slide plate body 203 in a centered position, thereby better aligning with the bottom of the laser triangular sensor 106 and the camera 107.

[0033] In this embodiment, the laser triangulation sensor 106 scans the carbon skateboard body 203, and the scanned data is transmitted to the microcontroller 111. The camera 107 captures images of the wear location. During scanning, the first motor 103 drives the first threaded rod 102 to rotate, thereby moving the laser triangulation sensor 106 and the camera 107 to scan and capture the entire carbon skateboard body 203. Simultaneously, the electric telescopic rod 108 can be extended or retracted to adjust the rotation of the laser triangulation sensor 106, thereby changing the laser incident angle of the laser triangulation sensor 106. A larger angle, such as 60°-75°, can be selected for anti-reflective interference, while a smaller angle, such as 30°-45°, can be selected for high-resolution detection, thus adapting to the needs of different detection areas.

[0034] In a preferred embodiment, a polarizing lens is fixedly mounted on the laser receiving end of the laser triangulation sensor 106, and an LED bead is fixedly mounted on the bottom of the camera 107.

[0035] In this embodiment, the polarizing lens can reduce stray light entering the laser receiver of the laser triangulation sensor 106 to a certain extent, thereby making the measurement structure more accurate.

[0036] In a preferred embodiment, the laser triangulation sensor 106 is electrically mounted to the input terminal of the microcontroller 111, and the camera 107 is electrically mounted to the input terminal of the microcontroller 111.

[0037] In this embodiment, the microcontroller 111 processes and calculates the data and transmits it to the terminal display, which can display the basic outline of the carbon skateboard. At the same time, the camera 107 takes pictures, which can also show the damage to the damaged area. The calculated data can convert the wear degree of the worn area into data.

[0038] In a preferred embodiment, the placement platform 201 has a placement slot inside, and a magnetic strip is fixedly installed at the top of the placement slot of the placement platform 201. The carbon slide body 203 is magnetically installed on the top of the magnetic strip.

[0039] In this embodiment, the placement slot leaves space for bolts and other components at the bottom of the carbon slide body 203, making placement convenient and keeping the bottom of the carbon slide body 203 level with the ground.

[0040] In a preferred embodiment, there are two second threaded rods 205, each with a positive and negative thread, and the two second threaded rods 205 are fixedly mounted on the two output shafts of the second motor 204.

[0041] In this embodiment, the components connected to the two second threaded rods 205 are identical, and the two first threaded rods 102 are driven to move closer or further apart by the positive and negative threads.

[0042] In a preferred embodiment, a through groove is provided inside the connecting rod 206, and a cylinder is fixedly installed at the bottom of the mounting plate 207. The cylinder is slidably installed with the connecting rod 206 through the through groove.

[0043] In this embodiment, the rotation of the connecting rod 206 is restricted by a cylinder to prevent excessive friction between the connecting rod 206 and 205 from causing the second threaded rod 205 to directly drive the connecting rod 206 to rotate.

[0044] Working principle: When in use, first place the carbon slide body 203 on the placement platform 201, and then drive the two second threaded rods 205 to rotate through the second motor 204. The opposite threads installed on the two second threaded rods 205 will drive the clamping blocks 202 to move closer to each other until the carbon slide body 203 is clamped and fixed in position.

[0045] After the carbon skateboard body 203 is fixed in position, the laser triangulation sensor 106 is activated to scan the carbon skateboard body 203. The scan data is transmitted to the microcontroller 111, and the wear location is captured by the camera 107. During scanning, the first motor 103 drives the first threaded rod 102 to rotate, thereby moving the laser triangulation sensor 106 and the camera 107 to scan and capture the entire carbon skateboard body 203. At the same time, the rotation of the laser triangulation sensor 106 can be adjusted by extending and retracting the electric telescopic rod 108, thereby changing the laser incident angle of the laser triangulation sensor 106. A larger angle, such as 60°-75°, can be selected for anti-reflective interference, while a smaller angle, such as 30°-45°, can be selected for high-resolution detection, so as to adapt to the needs of different detection areas.

[0046] A polarizing lens is installed at the laser receiver of the laser triangulation sensor 106. The polarizing lens can filter the light to ensure the accuracy of the data. At the same time, LED beads are installed on the outer ring of the lens of the camera 107 to improve the shooting effect of the camera 107 in shadow areas by supplementing the light.

[0047] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A non-contact measuring device for the wear degree of a pantograph carbon strip, comprising a measuring unit (100) and a fixing unit (200), characterized in that: the measuring unit (100) comprises a bracket (101), a first threaded rod (102) is rotatably installed inside the bracket (101), a first motor (103) output shaft is fixedly installed at one end of the first threaded rod (102), a slide rod (104) is fixedly installed inside the bracket (101), a supporting plate (105) is fixedly installed inside the bracket (101) below the slide rod (104), a threaded sleeve (110) is threadedly installed on the outer wall of the first threaded rod (102), a side plate (109) is fixedly installed on one side of the threaded sleeve (110), a single-chip microcomputer (111) is fixedly installed on the other side of the threaded sleeve (110) away from the side plate (109), a laser triangulation sensor (106) is fixedly installed at one end of the side plate (109), a camera (107) is fixedly installed on one side of the laser triangulation sensor (106), and an electric telescopic rod (108) is hingedly connected to the side plate (109) at the other end of the electric telescopic rod (108). The fixing unit (200) comprises a placing table (201), a clamping block (202) is slidably installed on the top of the placing table (201), a carbon strip body (203) is clamped in the clamping block (202), a second motor (204) is fixedly installed on the bottom of the placing table (201), a second threaded rod (205) is fixedly installed on the output end of the second motor (204), a connecting rod (206) is threadedly installed on the outer wall of the second threaded rod (205), and an installation plate (207) is rotatably installed at one end of the second threaded rod (205).

2. A non-contact device for measuring the degree of wear of a pantograph carbon strip according to claim 1, characterized in that, A polarizing lens is fixedly installed on the laser receiving end of the laser triangulation sensor (106), and a lamp bead is fixedly installed on the bottom of the camera (107).

3. A non-contact wear measuring device for a pantograph carbon strip according to claim 1, characterized in that, The laser triangulation sensor (106) and the camera (107) are electrically connected to the input end of the single-chip microcomputer (111).

4. A non-contact wear measuring device for a pantograph carbon strip according to claim 1, characterized in that, A placing groove is formed in the placing table (201), a magnetic strip is fixedly installed on the top of the placing groove of the placing table (201), and the carbon strip body (203) is magnetically installed on the top of the magnetic strip.

5. A non-contact wear measuring device for a pantograph carbon strip according to claim 1, wherein The number of the second threaded rods (205) is two, and a right thread and a left thread are respectively formed in the two second threaded rods (205), and the two second threaded rods (205) are respectively fixedly installed on the two output shafts of the second motor (204).

6. A non-contact wear measuring device for a pantograph carbon strip according to claim 1, characterized in that, A through sliding groove is formed in the connecting rod (206), a cylinder is fixedly installed on the bottom of the installation plate (207), and the cylinder is slidably installed in the through sliding groove of the connecting rod (206).

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