A detection device

Abstract

The application discloses a detection device. Wherein, including: back reference plate and measurement plate; back reference plate includes first upper surface; first upper surface includes groove; measurement plate is set on first upper surface and is connected with back reference plate through limiting structure in groove; oblique strip hole penetrates measurement plate; the extension direction of oblique strip hole and first direction have a preset angle; the bottom surface of back reference plate is used to place carbon slide plate; the vertical distance between the first end of oblique strip hole and the edge of measurement plate is first preset distance, and the standard thickness of carbon slide plate is first preset distance; the vertical distance between the second end of oblique strip hole and the edge of measurement plate is second preset distance, and the minimum allowable thickness of carbon slide plate is second preset distance. The technical scheme of the application realizes the detection of the slope and thickness of the carbon slide plate, fundamentally provides technical support for scientifically prolonging the service life of the carbon slide plate, does not need any calculation, greatly reduces the dependence on personnel experience and skills, and reduces human error.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, and more particularly to a detection device. Background Technology

[0002] In the existing technology, the inspection of carbon sliding plates mostly uses electronic measuring instruments or single-function mechanical tools, such as laser scanners, electronic thickness gauges, calipers, angle gauges, etc. These devices are usually expensive, have high environmental requirements, and are not convenient for quick on-site use.

[0003] Furthermore, current grinding standards for carbon skateboards on most circuits primarily limit the height difference. However, actual research shows that the wear of carbon skateboards is not a simple linear process; its wear rate is significantly influenced by the morphology of the pits. The slope or radius of curvature of the pits is a more critical parameter than the height difference. Pits with excessive slopes experience stress concentration and abrasive retention effects that drastically accelerate wear, leading to a significant reduction in the lifespan of the carbon skateboard. Therefore, if only the height difference is controlled, many seemingly shallow pits become sources of accelerated wear due to their excessive slope, resulting in an increasingly rapid wear rate and a reduced lifespan for the carbon skateboard. Summary of the Invention

[0004] This invention provides a detection device to solve the problem that existing detection devices cannot detect slope parameters, thus making it impossible to measure wear rate.

[0005] A detection device according to the present invention includes: a rear reference plate and a measuring plate;

[0006] The rear reference plate includes a first upper surface; the first upper surface includes a groove; the measuring plate is disposed on the first upper surface and is slidably connected to the rear reference plate through a limiting structure in the groove;

[0007] The measuring plate includes a first region; the first region includes a diagonal hole that penetrates the measuring plate; the extending direction of the diagonal hole and the first direction have a preset angle; wherein, the first direction is the sliding direction of the measuring plate; wherein, the first region is the non-overlapping area of ​​the projection of the measuring plate onto the first plane and the projection of the rear reference plate onto the first plane; the first plane is the plane containing the first upper surface;

[0008] The bottom surface of the rear reference plate is used to place the carbon slide plate; along the second direction, the vertical distance between the first end of the oblique strip hole and the edge of the measuring plate is the first preset distance, which is the standard thickness of the carbon slide plate; the vertical distance between the second end of the oblique strip hole and the edge of the measuring plate is the second preset distance, which is the minimum allowable thickness of the carbon slide plate; wherein, the bottom surface is parallel to the first upper surface; the second direction is the thickness direction of the carbon slide plate; the edge of the measuring plate is the edge closer to the rear reference plate.

[0009] Optional, preset angle satisfy ;

[0010] Standard thickness of carbon skateboard satisfy Minimum allowable thickness of carbon fiber skateboard satisfy .

[0011] Optional, a cover plate may also be included;

[0012] The rear reference plate includes a second upper surface; the plane containing the second upper surface is parallel to the first plane and the perpendicular distance between them is greater than or equal to the thickness of the measuring plate;

[0013] The cover plate is fixedly mounted on the second upper surface.

[0014] Optionally, the cover plate includes a through groove; the through groove extends through the cover plate; the measuring plate includes a limiting hole;

[0015] The limiting structure includes a bolt; the head of the bolt is set in a groove, and the shank of the bolt achieves a sliding connection between the measuring plate and the rear reference plate through a series of limiting holes and through slots.

[0016] Optionally, the limiting structure may also include a nut;

[0017] The nut is fitted on the side of the rod away from the cover plate and is used to fasten the cover plate, measuring plate and rear reference plate.

[0018] Optionally, the measuring plate includes two limiting holes arranged along the first direction;

[0019] Along the first direction, the shortest distance between the limiting hole and the side of the measuring plate is the first distance, the shortest distance between the first end of the through groove and the side of the cover plate is the second distance, and the shortest distance between the second end of the through groove and the side of the cover plate is the third distance;

[0020] The difference between the first distance and the second distance is the preset maximum door opening value; the difference between the first distance and the third distance is the preset minimum door opening value.

[0021] Optionally, it also includes a first baffle and a second baffle; along the first direction, the bottom surface includes a first bottom end and a second bottom end;

[0022] The first baffle is fixedly installed at the first bottom end, and the second baffle is fixedly installed at the second bottom end;

[0023] The first and second baffles are used to limit the movement of the carbon sliding plate.

[0024] Optionally, along the first direction, the first baffle has a first thickness, and the second baffle has a second thickness;

[0025] The first thickness is the maximum allowable gap at the bottom of the door, and the second thickness is the minimum allowable gap at the bottom of the door.

[0026] Optionally, the measuring plate includes a first scale structure and a second scale structure;

[0027] The first scale structure is disposed on the surface of the measuring plate away from the first upper surface and on the edge away from the rear reference plate, and its scale values ​​are arranged along the first direction;

[0028] The second scale structure is located on the side of the measuring plate, and its scale values ​​are arranged along the thickness direction of the measuring plate.

[0029] Optionally, the groove has a T-shaped cross-section.

[0030] The technical solution of this invention, by setting a rear reference plate and a measuring plate, and setting oblique strip holes on the measuring plate, detects the slope and thickness of the carbon slide plate by measuring the distance between the first and second ends of the oblique strip holes and the edge of the measuring plate, as well as the slope of the oblique strip holes. In a purely mechanical, low-cost, and highly reliable manner, the key slope parameter is transformed into a measurable and executable indicator on site, fundamentally providing technical support for scientifically extending the life of carbon slide plates. The slope can be determined through simple mechanical operation without any calculation, greatly reducing the reliance on personnel experience and skills and reducing human error.

[0031] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a detection device at a first angle according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the second angle of a detection device provided according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of a measuring plate according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the third angle of a detection device according to an embodiment of the present invention;

[0037] Figure 5This is a schematic diagram illustrating the relationship between slope and radius of curvature according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the fourth angle of a detection device provided according to an embodiment of the present invention;

[0039] Figure 7 This is a structural schematic diagram of a detection device from the fifth angle according to an embodiment of the present invention. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] Figure 1 This is a schematic diagram of the structure of a detection device at a first angle according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the second angle of a detection device according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of a measuring plate according to an embodiment of the present invention. Figure 4 This is a structural schematic diagram of a detection device from a third angle according to an embodiment of the present invention. (Combined with...) Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the detection device includes:

[0043] Rear reference plate 1 and measuring plate 2;

[0044] The rear reference plate 1 includes a first upper surface; the first upper surface includes a groove 10; the measuring plate 2 is disposed on the first upper surface and is slidably connected to the rear reference plate 1 through the limiting structure 4 in the groove 10.

[0045] The measuring plate 2 includes a first region 201; the first region 201 includes a diagonal hole 20, which penetrates the measuring plate 2; the extension direction of the diagonal hole 20 and the first direction x have a preset angle θ; wherein, the first direction x is the sliding direction of the measuring plate 2; wherein, the first region 201 is the non-overlapping area of ​​the projection of the measuring plate 2 onto the first plane and the projection of the rear reference plate 1 onto the first plane; the first plane is the plane containing the first upper surface;

[0046] The bottom surface of the rear reference plate 1 is used to place the carbon slide plate 5; along the second direction y, the vertical distance between the first end of the oblique strip hole 20 and the edge of the measuring plate is the first preset distance H1, which is the standard thickness of the carbon slide plate 5; the vertical distance between the second end of the oblique strip hole 20 and the edge of the measuring plate is the second preset distance H2, which is the minimum allowable thickness of the carbon slide plate 5; wherein, the bottom surface is parallel to the first upper surface; the second direction y is the thickness direction of the carbon slide plate 5; the edge of the measuring plate is the edge closer to the rear reference plate 1.

[0047] The rear reference plate 1 serves as the base mounting platform and measurement reference for the entire testing device. The rear reference plate 1 includes a first upper surface with a groove 10 extending along a first direction x and penetrating both sides of the rear reference plate 1. A limiting structure 4 is disposed within the groove 10 and connects to the measuring plate 2, thereby enabling the measuring plate 2 to slide slidably with the rear reference plate 1 along the first direction x.

[0048] The measuring plate 2 is the core component for detecting the thickness and slope of the carbon slide plate 5. Taking the plane containing the first upper surface as the first plane, the first region 201 of the measuring plate 2 can be the non-overlapping area of ​​the projection of the measuring plate 2 onto the first plane and the projection of the rear reference plate 1 onto the first plane; the overlapping area can be designated as the second region 202. The first region 201 can be used for measuring the carbon slide plate 5. A diagonal hole 20 penetrating the measuring plate 2 is provided on the first region 201. The extension direction of the diagonal hole 20 has a preset angle θ with the first direction x, meaning the diagonal hole 20 has a certain slope.

[0049] When measuring the carbon slide plate 5, it can be placed on the bottom surface of the rear reference plate 1, with the plane of the carbon slide plate 5 parallel to the plane of the measuring plate 2. Along the thickness direction of the carbon slide plate 5, the vertical distance between the first end of the oblique groove 20 and the edge of the measuring plate is a first preset distance H1, and the vertical distance between the second end and the edge of the measuring plate is a second preset distance H2. The first preset distance H1 is set as the standard thickness of the carbon slide plate 5, which can be the thickness of the carbon slide plate 5 when it leaves the factory without wear. The second preset distance H2 is set as the minimum allowable thickness of the carbon slide plate 5, which can be the minimum thickness allowed for its use.

[0050] Specifically, during the measurement process, since the carbon slide plate 5 is set on the bottom surface of the rear reference plate 1 and the measuring plate 2 is set on the first upper surface, the edge of the measuring plate and the edge of the placed carbon slide plate 5 are on the same plane. When measuring the carbon slide plate 5 in the first area 201 of the measuring plate 2, the thickness of the carbon slide plate 5 can be determined by the distance from the first end and the second end of the inclined strip hole 20 to the edge of the measuring plate, which is between the first preset distance H1 and the second preset distance H2. At the same time, by moving the measuring plate 2, the thickness of the carbon slide plate 5 at different positions can be measured to see if it meets the requirements.

[0051] For example, Figure 2 The diagram shows a projection of the carbon slide plate 5 and the measuring plate 2 onto a first plane. As can be seen from the diagram, when the thickness of the carbon slide plate 5 is less than the second preset distance H2, the carbon slide plate 5 cannot be observed through the oblique hole 20, indicating that the thickness of the carbon slide plate 5 is less than the minimum allowable thickness, and it needs to be replaced immediately. When the entire carbon slide plate 5 can be observed through the oblique hole 20, it indicates that the thickness of the carbon slide plate 5 is between the standard thickness and the minimum allowable thickness, and the thickness of the carbon slide plate 5 meets the standard. Simultaneously, it can be determined whether there is carbon slide plate 5 material above the oblique hole 20. If so, it indicates that the slope of the carbon slide plate 5 exceeds the standard, and it needs to be polished. The thickness and slope of the entire area of ​​the carbon slide plate 5 are detected by sliding the measuring plate 2 along the first direction x.

[0052] In actual operation, the measuring plate 2 can be slid along the first direction x. When the lowest point of the pit of the carbon slide plate 5 coincides with the inclined strip hole 20, stop sliding. Check whether there is carbon slide plate 5 material above the inclined strip hole 20. If there is, it means that this place needs to be polished. Insert the tip of the marking pen into the inclined strip hole 20 and press it against the edge of the inclined strip hole 20. Move the pen tip along the edge of the inclined strip hole 20 and draw a guide line with a preset slope on the surface of the carbon slide plate 5. The maintenance personnel can polish according to this guide line to ensure that the slope after polishing is qualified.

[0053] It is understandable that the carbon contact plate 5 of the pantograph is subject to uneven wear due to the influence of the power grid layout during vehicle operation. Wear between the pantograph and the contact wire can be divided into two types: mechanical wear and electrical wear. Mechanical wear is caused by the friction of the carbon contact plate 5 drawing electricity from the contact wire. Inappropriate contact pressure and geometric parameters between the pantograph and the contact wire can lead to abnormal wear of the carbon contact plate 5. Electrical wear is caused by arcing, electro-corrosion, and uneven wear of the contact plate due to arcing or sparking resulting from poor pantograph-contact. Abnormal wear may cause pits to form on the carbon contact plate 5. When the contact wire passes through deep pits, problems such as increased mechanical friction, incomplete contact between the contact wire and the carbon contact plate 5, and lateral wear of the contact wire occur, affecting the sliding rate of the contact wire and accelerating the wear between the carbon contact plate 5 and the contact wire.

[0054] In the initial stage of abnormal wear forming pits, the pits are relatively shallow, with a depth of about 1-2 mm, which can be referred to as the shallow pit stage. The presence of pits leads to stress concentration, especially at the edges and bottom of the pits. When the pits are shallow, the stress concentration effect is dominant, and the stress concentration factor increases linearly with the ratio of depth to radius of curvature. At this time, the wear equation can be expressed as: .in, This refers to the wear volume; For contact surface pressure; The wear coefficient; Geometric sensitivity coefficient; The radius of curvature of the pit; This refers to the depth of the pit. Wear rate; Let be the wear time. The formula shows that during the shallow pitting stage, the wear rate of the carbon slide plate 5 increases with increasing pit depth and decreases with decreasing pit curvature radius.

[0055] During the medium-deep pitting stage, when the pit depth is between 2 mm and 0.3 times the overall thickness, abrasive grains will be retained in the pit, and the proportion of retained abrasive grain volume will increase significantly. At this time, the wear rate is dominated by three-body wear, and the wear equation can be expressed as: .in, It is the first proportionality constant; This is the second proportionality constant. According to the formula, at time , the wear rate of the carbon skateboard's 5-inch pit increases with the pit depth. The wear rate increases dramatically with the increase of the radius of curvature; similarly, the wear rate increases with the radius of curvature. The rate of wear decreases exponentially. To slow down the wear rate, the radius of curvature of the pits can be limited within a certain range.

[0056] Figure 5 This is a schematic diagram illustrating the relationship between slope and radius of curvature according to an embodiment of the present invention, such as... Figure 5As shown, assuming the arc of the wear pit is a circular arc, the depth of the pit at the location of the maximum slope is known. and slope Here, the slope represents the slope of the line connecting the measurement point and the origin. The radius of curvature of the indentation is calculated as follows: .in, The slope is denoted as .

[0057] According to the formula, at the depth of the pit When the slope remains constant, the radius of curvature of the pit changes with the slope. As the radius of curvature increases, the curvature decreases, so the restriction on the radius of curvature can be transformed into a restriction on the slope. Restricting the minimum radius of curvature is equivalent to restricting the maximum slope. Therefore, in this embodiment of the invention, inclined holes 20 are placed on the measuring plate 2. By setting the slope of the inclined holes to a certain slope, the radius of curvature can be detected, and then correlated with the wear rate. The carbon slide plate 5 with a high wear rate is then polished.

[0058] The technical solution of this invention, by setting a rear reference plate and a measuring plate, and setting oblique strip holes on the measuring plate, detects the slope and thickness of the carbon slide plate by measuring the distance between the first and second ends of the oblique strip holes and the edge of the measuring plate, as well as the slope of the oblique strip holes. In a purely mechanical, low-cost, and highly reliable manner, the key slope parameter is transformed into a measurable and executable indicator on site, fundamentally providing technical support for scientifically extending the life of carbon slide plates. The slope can be determined through simple mechanical operation without any calculation, greatly reducing the reliance on personnel experience and skills and reducing human error.

[0059] Optional, continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the preset included angle satisfy ;

[0060] Standard thickness of carbon skateboard 5 satisfy Minimum allowable thickness of carbon fiber skateboard 5 satisfy .

[0061] Among them, based on the research surface, the preset included angle When the angle is greater than 3.435° and the slope is greater than 0.06, the wear rate is high, therefore it is set... Therefore, when there is carbon slide plate 5 material above the inclined hole 20, it means that the slope at this position is greater than 0.06, and grinding is required to reduce the wear rate of carbon slide plate 5.

[0062] The standard thickness of the common carbon fiber skateboard 5 is 39mm, therefore the standard thickness of the carbon fiber skateboard 5 is set. satisfy The minimum allowable thickness for a typical carbon fiber skateboard (model 5) is 26mm, therefore, the minimum allowable thickness for a carbon fiber skateboard (model 5) is set. satisfy .

[0063] For example, during actual measurement, the carbon slide plate 5 is passed through the latch at the bottom of the rear reference plate 1, and pressed firmly against the aluminum support plate of the carbon slide plate 5 from below by hand. The middle measuring plate 2 is slid along, and the relative position of the diagonal hole 20 and the carbon slide plate 5 is observed. If the position of the carbon slide plate 5 is lower than the second end of the diagonal hole 20, it means that the thickness of the carbon slide plate 5 is less than 26mm and it needs to be replaced immediately. If all positions of the carbon slide plate 5 are above the area of ​​the diagonal hole 20, the remaining thickness of the carbon slide plate 5 meets the standard. When the lowest point of the indentation on the carbon slide plate 5 coincides with the diagonal hole 20, stop sliding; check whether there is carbon slide plate 5 material above the diagonal hole 20. If there is, it means that this area needs to be polished; insert the tip of the marking pen into the diagonal hole 20 and press it against the edge of the upper diagonal hole 20; move the pen tip along the edge of the diagonal hole 20 and draw a guide line with a slope of 0.06 on the surface of the carbon slide plate 5; the maintenance personnel can use this line to polish to ensure that the slope is qualified after polishing.

[0064] The technical solution of this invention integrates thickness and slope measurement functions by limiting standard thickness, minimum allowable thickness and preset included angle. It is convenient to operate, low in cost, and at the same time ensures control over wear rate.

[0065] Optional, continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it also includes cover plate 3;

[0066] The rear reference plate 1 includes a second upper surface; the plane containing the second upper surface is parallel to the first plane and the perpendicular distance between them is greater than or equal to the thickness of the measuring plate 2;

[0067] The cover plate 3 is fixedly installed on the second upper surface.

[0068] The cover plate 3 can be used to enclose the rear reference plate 1. The rear reference plate 1 includes a second upper surface, which is different from the first upper surface. The plane containing the second upper surface is parallel to the first plane and the vertical distance between them is greater than or equal to the thickness of the measuring plate 2. Therefore, when the cover plate 3 is placed on the second upper surface, it does not interfere with the sliding of the measuring plate 2 in the first direction x.

[0069] For example, if the plane containing the second upper surface is parallel to the first plane and the vertical distance between them is equal to the thickness of the measuring plate 2, then the cover plate 3 and the rear reference plate 1 together form a channel to guide the sliding of the measuring plate 2, and the measuring plate 2 can slide in the channel along the first direction x.

[0070] In some embodiments, the length of the cover plate 3 may be the same as the length of the rear reference plate 1, pressing the measuring plate 2 between the two, but allowing the intermediate plate to slide smoothly within the slide.

[0071] Optional, continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the cover plate 3 includes a through groove 30; the through groove 30 penetrates the cover plate 3; the measuring plate 2 includes a limiting hole 21;

[0072] The limiting structure 4 includes a bolt; the head of the bolt is set in the groove 10, and the shank of the bolt is connected to the measuring plate 2 and the rear reference plate 1 by means of the series limiting hole 21 and the through groove 30.

[0073] The through groove 30 penetrates the cover plate 3 and extends along the first direction x. The limiting hole 21 penetrates the measuring plate 2. The limiting structure 4 can be a bolt, with the bolt head locked in the groove 10. The bolt shank is connected to the limiting hole 21 to achieve a sliding connection between the measuring plate 2 and the rear reference plate 1. The bolt shank is also connected to the through groove 30 to connect the measuring plate 2, the cover plate 3, and the rear reference plate 1. By moving the bolt, the measuring plate 2 can slide along the first direction x in the through groove 30 and the groove 10.

[0074] In some embodiments, the cross-sectional shape of the groove 10 is T-shaped. The T-shaped structure helps to hold the head of the bolt in the groove 10 to limit the bolt and ensure the stability of the measuring plate 2 during the sliding process.

[0075] Optional, continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the limiting structure 4 also includes a nut;

[0076] The nut is fitted on the side of the rod away from the cover plate 3 to fasten the cover plate 3, the measuring plate 2 and the rear reference plate 1.

[0077] The limiting structure 4 also includes a nut, which can be used to set on the shank of the bolt.

[0078] Specifically, the nut is fitted onto the side of the rod away from the cover plate 3. The nut can be moved towards the cover plate 3 by rotating the thread. When the cover plate 3, the measuring plate 2, and the rear reference plate 1 are in close contact, the nut cannot move further, thus completing the fastening of the cover plate 3, the measuring plate 2, and the rear reference plate 1. After fastening, the measuring plate 2 cannot move along the first direction x. When it is necessary to move the measuring plate 2, the connection between the cover plate 3, the measuring plate 2, and the rear reference plate 1 can be loosened by rotating the nut, thereby allowing the measuring plate 2 to move along the first direction x.

[0079] For example, during the measurement process, first loosen the nut, hold the fixture with one hand, and push the bolt with the other hand to move the intermediate measuring plate 2 along the surface of the carbon slide plate 5. Observe the relative position of the inclined hole 20 and the carbon slide plate 5. It is found that all positions are above the area of ​​the inclined hole 20, and the thickness is qualified. During the slope measurement, loosen the nut and slide the measuring plate 2 along the first direction x. It is found that the lowest point of a pit coincides with the inclined hole 20. Upon inspection, it is found that there is carbon slide plate 5 material above the inclined hole 20, indicating that this area needs to be polished. Tighten the nut to lock the measuring plate 2, take out a marker pen, insert the pen tip into the through groove 30 of the front pressure plate, and press it against the edge of the inclined hole 20. Move the pen tip along the edge of the inclined hole 20 and draw a clear polishing guide line with a slope of 0.06 on the surface of the carbon slide plate 5. The maintenance personnel use an angle grinder to focus on polishing the side wall of the pit according to this line until the slope meets the standard, while taking care to preserve the carbon film at the bottom of the pit.

[0080] The technical solution of this invention achieves the sliding and locking functions of the measuring plate by setting a nut on the rod. Sliding: Loosen the nut and push the bolt by hand. Its head moves along the T-slot, causing the middle measuring plate to slide accordingly. Locking: Tighten the nut. The clamping force firmly locks the middle measuring plate in the current position, realizing the line drawing function.

[0081] Optional, Figure 6 This is a structural schematic diagram of a detection device from a fourth angle according to an embodiment of the present invention, combined with... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the measuring plate 2 includes two limiting holes 21 arranged along the first direction x;

[0082] Along the first direction x, the shortest distance between the limiting hole 21 and the side of the measuring plate is the first distance L1, the shortest distance between the first end of the through groove 30 and the side of the cover plate is the second distance L2, and the shortest distance between the second end of the through groove 30 and the side of the cover plate is the third distance L3.

[0083] The difference between the first distance L1 and the second distance L2 is the preset maximum door opening value; the difference between the first distance L1 and the third distance L3 is the preset minimum door opening value.

[0084] The limiting hole 21 includes two holes arranged along the first direction x on the measuring plate 2. The first distance L1 can be the shortest vertical distance from the limiting hole 21 along the first direction x to the side of the measuring plate, and the first distance L1 is the same for any two limiting holes 21.

[0085] The through groove 30 has a first end and a second end in the first direction x. Along the first direction x, the shortest distance between the first end and the side of the cover plate is the second distance L2, and the distance between the second end and the side of the cover plate is the third distance L3.

[0086] Specifically, the difference between the first distance L1 and the second distance L2 is set to a preset maximum door opening value, such that when the measuring plate 2 is slid to the first end of the through groove 30, the measuring plate 2 protrudes a certain length relative to the cover plate 3, and this length is the difference between the first distance L1 and the second distance L2. Setting the difference between the first distance L1 and the second distance L2 as the preset maximum door opening value can be used to detect the door opening, detecting whether the current door opening is less than the preset maximum door opening value. In some embodiments, the preset maximum door opening value can be set to 1410mm.

[0087] The difference between the first distance L1 and the third distance L3 is a preset minimum door opening value. This ensures that when the measuring plate 2 is slid to the second end of the through groove 30, the measuring plate 2 protrudes a certain length relative to the cover plate 3, which is the difference between the first distance L1 and the third distance L3. Setting the difference between the first distance L1 and the third distance L3 as the preset minimum door opening value can be used to detect the door opening, checking whether the current door opening is greater than the preset minimum door opening value. In some embodiments, the preset minimum door opening value can be set to 1400mm.

[0088] For example, when the measuring plate 2 is pulled to the first end of the through groove 30, the measuring plate 2 will protrude 1410mm relative to the rear reference plate 1. When the detection device is placed on the edge of the door leaf, if the protruding part of the measuring plate 2 cannot enter the door gap, the door opening meets the standard of less than 1410mm. When the measuring plate 2 is pulled to the second end of the through groove 30, the measuring plate 2 will protrude 1400mm relative to the rear reference plate 1. When the detection device is placed on the edge of the door leaf, if the protruding part of the measuring plate 2 can enter the door gap, the door opening meets the standard of greater than 1400mm, and the door opening is normal.

[0089] The technical solution of this invention sets different distances between the two ends of the through groove and the side of the cover plate, and sets the difference between the first distance and the second distance as the preset maximum opening value of the car door; the difference between the first distance and the third distance is the preset minimum opening value of the car door, thereby enabling the detection device to detect the opening of the car door.

[0090] Optional, Figure 7 This is a structural schematic diagram of a detection device from a fifth angle according to an embodiment of the present invention, combined with... Figure 7 As shown, it also includes a first baffle 11 and a second baffle 12; along the first direction x, the bottom surface includes a first bottom end and a second bottom end;

[0091] The first baffle 11 is fixedly disposed at the first bottom end, and the second baffle 12 is fixedly disposed at the second bottom end;

[0092] The first baffle 11 and the second baffle 12 are used to limit the carbon slide plate 5.

[0093] In the first direction x, the bottom surface includes a first bottom end and a second bottom end. A first baffle 11 is fixedly disposed at the first bottom end, and a second baffle 12 is fixedly disposed at the second bottom end. The carbon slide plate 5 is placed on the bottom surface between the first baffle 11 and the second baffle 12. By designing the dimensions of the first baffle 11 and the second baffle 12, the edge of the measuring plate and the edge of the carbon slide plate 5, which abuts against the bottom surface, the first baffle 11, and the second baffle 12, are on the same plane, thereby ensuring the accuracy of the measuring plate 2 in measuring the thickness and slope of the carbon slide plate 5.

[0094] Optional, continue to refer to Figure 7 As shown, along the first direction x, the first baffle 11 has a first thickness H3, and the second baffle 12 has a second thickness H4;

[0095] The first thickness H3 is the maximum allowable gap at the bottom of the door, and the second thickness H4 is the minimum allowable gap at the bottom of the door.

[0096] The first baffle 11, which is provided along the first direction x, has a first thickness H3, which is the maximum allowable gap at the bottom of the door and can be 9mm; the second baffle 12 has a second thickness H4, which is the minimum allowable gap at the bottom of the door and can be 7mm.

[0097] For example, during testing, the sliding function is not required. The operator can directly hold the testing device and try to insert one end of the second baffle 12 into the gap between the bottom of the car door and the platform floor. If it cannot be inserted, the gap is less than 7mm, which is unacceptable. The operator can try to insert one end of the first baffle 11. If it can be easily inserted, the gap is greater than 9mm, which is also unacceptable. If the operator tries to insert one end of the first baffle 11 into the gap at the bottom of the door and cannot, the gap at the bottom of the door is judged to be approximately 8mm, which meets the standard.

[0098] The technical solution of this invention is to set the first baffle 11 and the second baffle 12 to have different thicknesses, thereby enabling the door bottom gap to be measured by a detection device.

[0099] Optional, combined Figure 1 , Figure 3 and Figure 4 As shown, the measuring plate 2 includes a first scale structure 61 and a second scale structure 62;

[0100] The first scale structure 61 is disposed on the surface of the measuring plate 2 away from the first upper surface and on the edge away from the rear reference plate 1, and its scale values ​​are arranged along the first direction x.

[0101] The second scale structure 62 is disposed on the side of the measuring plate 2, and its scale values ​​are arranged along the thickness direction of the measuring plate 2.

[0102] The first scale structure 61 and the second scale structure 62 can be manufactured using laser engraving. The first scale structure 61 is disposed on the surface of the measuring plate 2 away from the first upper surface, away from the edge of the rear reference plate 1, to facilitate scale measurement, and the scale values ​​are arranged along the first direction x. The second scale structure 62 is disposed on the side of the measuring plate 2 and arranged along the thickness direction of the measuring plate 2.

[0103] For example, the measuring plate 2 is inserted directly between the two door panels or between the door and the frame, and the door gap value is read directly from the first scale structure 61. The scale shows a door gap value of 4.5mm, which is normal.

[0104] Place the bottom surface of the rear reference plate 1 of the testing device flat on the bogie reference plane, slide the measuring plate 2 until the zero point of its second scale structure 62 is aligned with the reference plane, and the height value of any measuring point can be read. For example, slide the measuring plate 2 to the measuring points near the four shock absorber mounting seats, read four height values ​​sequentially from the second scale structure 62, record and calculate the maximum difference to determine whether the vehicle body is level.

[0105] In some embodiments, the core of the detection device is a three-plate modular mechanical structure, with all components made of high-strength polycarbonate material, ensuring excellent strength, rigidity, and lightweight. The entire device requires no sensors, chips, or power supply, achieving all functions purely through the ingenious design of the mechanical structure, making it suitable for complex environments.

[0106] During the inspection of carbon skateboards, in the commonly used sliding area (center point ±320mm, this range is the normal wear area of ​​carbon skateboards and has a significant impact on the economic efficiency of carbon skateboard use), within a 50mm range, if the height difference is greater than 3mm (original standard 5mm, measured using a testing device), disassembly and grinding are performed; if the height difference is less than 3mm and the slope is greater than 0.06, the excess part is subjected to transition grinding to control the slope within the limit (without disassembly, using a testing device). During transition grinding, the excess part is ground off to reduce the wear rate. When disassembly and grinding are necessary due to chipping or other reasons, the sidewalls of the recess are ground to reduce the height of the sidewalls, thereby reducing the depth of the recess. A 100um margin is left at the bottom of the recess to retain the carbon film at the bottom of the recess, reducing the wear rate. Over-grinding at the transition between the sidewall and the surface can reduce stress concentration.

[0107] The technical solution of this invention solves the fatal flaw of existing carbon slide plate detection technology, which cannot conveniently and accurately measure and control the core parameter of pit slope. At the same time, it solves the problems of needing to carry multiple tools, cumbersome operation, and low efficiency in maintenance work. It realizes rapid measurement and interpretation of the remaining thickness of carbon slide plates; rapid on-site detection and judgment of the pit slope of carbon slide plates; marking guidance for carbon slide plate grinding operations; rapid comparison and detection of the maximum / minimum opening of passenger compartment doors; insertion detection of the bottom gap of passenger compartment doors; measurement of the compression gap of passenger compartment doors; and measurement of the height difference of the four corners of the bogie.

[0108] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A detection device, characterized in that, include: Rear reference plate and measuring plate; The rear reference plate includes a first upper surface; the first upper surface includes a groove; the measuring plate is disposed on the first upper surface and is slidably connected to the rear reference plate through a limiting structure in the groove. The measuring plate includes a first region; the first region includes a diagonal hole that penetrates the measuring plate; the extending direction of the diagonal hole and a first direction have a preset angle; wherein, the first direction is the sliding direction of the measuring plate; wherein, the first region is the non-overlapping region of the projection of the measuring plate onto a first plane and the projection of the rear reference plate onto the first plane; the first plane is the plane containing the first upper surface; The bottom surface of the rear reference plate is used to place the carbon slide plate; along the second direction, the vertical distance between the first end of the oblique hole and the edge of the measuring plate is a first preset distance, which is the standard thickness of the carbon slide plate; the vertical distance between the second end of the oblique hole and the edge of the measuring plate is a second preset distance, which is the minimum allowable thickness of the carbon slide plate; wherein, the bottom surface is parallel to the first upper surface; the second direction is the thickness direction of the carbon slide plate; the edge of the measuring plate is the edge closer to the rear reference plate; It also includes a cover plate; The rear reference plate includes a second upper surface; the plane containing the second upper surface is parallel to the first plane and the perpendicular distance between them is greater than or equal to the thickness of the measuring plate; The cover plate is fixedly disposed on the second upper surface; The cover plate includes a through groove; the through groove extends through the cover plate; the measuring plate includes a limiting hole; The limiting structure includes a bolt; the head of the bolt is disposed in the groove, and the shank of the bolt achieves a sliding connection between the measuring plate and the rear reference plate by connecting the limiting hole and the through groove in series. It also includes a first baffle and a second baffle; along the first direction, the bottom surface includes a first bottom end and a second bottom end; The first baffle is fixedly disposed at the first bottom end, and the second baffle is fixedly disposed at the second bottom end; The first baffle and the second baffle are used to limit the carbon slide plate.

2. The detection device according to claim 1, characterized in that, The preset included angle satisfy ; The standard thickness of the carbon skateboard satisfy The minimum allowable thickness of the carbon slide plate. satisfy .

3. The detection device according to claim 1, characterized in that, The limiting structure also includes a nut; The nut is fitted onto the side of the rod away from the cover plate and is used to fasten the cover plate, the measuring plate, and the rear reference plate.

4. The detection device according to claim 1, characterized in that, The measuring plate includes two limiting holes arranged along the first direction; Along the first direction, the shortest distance between the limiting hole and the side of the measuring plate is the first distance, the shortest distance between the first end of the through groove and the side of the cover plate is the second distance, and the shortest distance between the second end of the through groove and the side of the cover plate is the third distance; The difference between the first distance and the second distance is a preset maximum door opening value; the difference between the first distance and the third distance is a preset minimum door opening value.

5. The detection device according to claim 1, characterized in that, Along the first direction, the first baffle has a first thickness, and the second baffle has a second thickness; The first thickness is the maximum allowable gap at the bottom of the door, and the second thickness is the minimum allowable gap at the bottom of the door.

6. The detection device according to claim 1, characterized in that, The measuring plate includes a first scale structure and a second scale structure; The first scale structure is disposed on the surface of the measuring plate away from the first upper surface and on the edge away from the rear reference plate, and its scale values ​​are arranged along the first direction; The second scale structure is disposed on the side of the measuring plate, and its scale values ​​are arranged along the thickness direction of the measuring plate.

7. The detection device according to claim 1, characterized in that, The groove has a T-shaped cross-section.

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