Steel rail top surface multi-region corrugation measuring device and steel rail detection equipment

Abstract

The utility model provides a steel rail top surface multi-region corrugation measuring device and steel rail detection equipment, and belongs to the technical field of railway steel rail detection. In order to solve the problem of low detection reliability caused by single steel rail corrugation detection position, the utility model provides a steel rail top surface multi-region corrugation measurement device, which comprises a fixed bracket, the linear sliding table is arranged on the fixed support, a sliding block of the linear sliding table is connected with an extension arm, and the extension direction of the extension arm is the same as the sliding direction of the linear sliding table; the sliding block of the linear sliding table is further connected with an adjusting piece and a plurality of locking pieces. And the laser displacement sensor is arranged at the tail end of the extension arm, and the direction of a laser probe of the laser displacement sensor is perpendicular to the sliding direction of the linear sliding table so as to obtain steel rail corrugation data. The linear sliding table drives the laser displacement sensor to move in the width direction of the steel rail, so that multi-position detection is achieved, namely, multi-area corrugation data of the top face of the steel rail is obtained, and then the reliability of steel rail corrugation detection is improved.

Description

Technical Field

[0001] The present application relates to the technical field of railway rail detection, and in particular to a rail top surface multi-region corrugation measurement device and a rail detection device. Background Art

[0002] Rail corrugation refers to the periodic, wavy unevenness that occurs longitudinally on the rail's top surface. This refers to periodic, uneven plastic deformation and wear along the rail head and tread, creating a wave-like unevenness along the entire length of the rail. The troughs of this corrugated wear exhibit significant plastic deformation, causing the tread to widen or roll over, widening the wheel-rail contact zone.

[0003] Rail corrugation occurs at different locations on the rail due to factors such as poor wheel-rail contact, irregular track geometry, and curves of varying radii. For example: 1) On curved tracks, corrugation on the outer rail may be primarily caused by lateral forces, resulting in a longer and irregular corrugation pattern; whereas corrugation on the inner rail may be more affected by wheel slip and compression, resulting in a narrower corrugation pattern with greater depth variation. 2) Track geometry significantly influences the location of rail corrugation. For example, improper superelevation on curved tracks can cause variations in the wheel-rail contact point, making corrugation more likely to occur in specific locations. If superelevation is insufficient, the rail on the outer side of the curve will experience greater pressure, making corrugation more likely; while excessive superelevation may cause corrugation on the inner side of the curve. 3) Track geometric defects such as gauge variations and horizontal irregularities can also affect the location of corrugation. For example, in areas where the track gauge widens, the wheels may exert greater pressure on the rail side, leading to side corrugation. 4) Furthermore, when wheels roll on rails, the contact force between the wheel and rail will be distributed differently at different locations due to factors such as the vehicle's weight, speed, and acceleration. For example, on a straight track, the wheels primarily bear vertical pressure, but on a curved track, the wheels exert additional lateral force on the rails due to centrifugal force. This lateral force places greater pressure on the rail edges outside the curve, making corrugation more likely. This diversity makes it difficult to describe corrugation at different locations using a unified quantitative indicator.

[0004] Rail corrugation not only causes a sharp increase in wheel-rail forces, resulting in intense vibrations in rolling stock and track, and the development and progression of damage to track and rolling stock components, but also accelerates ballast pulverization, mud and slurry on the roadbed, loosening of track fasteners, breaking of threaded spikes and gauge rods, hanging sleepers, and damage to rubber pads, significantly increasing maintenance costs. It also causes noise pollution, impacting and causing discomfort to residents and passengers along the railway line. It also limits the ability to increase operating train speeds and poses a safety hazard.

[0005] Existing rail corrugation detection technologies are mainly divided into direct measurement and indirect measurement methods. 1) Direct measurement methods primarily use dedicated detection equipment to detect rail corrugation using the inertial reference method and chord measurement method. Representative methods include: electronic straightedges and dedicated corrugation measurement carts. 2) Indirect measurement methods primarily measure rail corrugation through technologies such as wheel-rail noise detection, wheel-rail force detection, and axlebox vibration acceleration detection. However, current detection methods can only measure rail corrugation at a single location and cannot capture rail corrugation at different locations, resulting in low detection reliability. Utility Model Content

[0006] The purpose of this application is to address the problem in the prior art of low detection reliability due to the single location of rail corrugation detection. Therefore, this application provides a multi-region rail top surface corrugation measurement device. This device uses a linear slide to drive a laser displacement sensor that can move along the rail width, thereby achieving multi-position detection, i.e., obtaining corrugation data from multiple regions of the rail top surface, thereby improving the reliability of rail corrugation detection.

[0007] The present application provides a rail top surface multi-area corrugation measurement device, comprising:

[0008] A fixed bracket, used to connect to the bottom surface of the equipment movable on the rail;

[0009] A linear slide is provided on the fixed bracket, and the slider of the linear slide is connected to an extension arm, and the extension direction of the extension arm is the same as the sliding direction of the linear slide; the slider of the linear slide is also connected to an adjustment member and a plurality of locking members, the adjustment member is arranged perpendicular to the sliding direction of the linear slide, and can drive the slider of the linear slide to slide, the adjustment member has a first length to extend out of the top surface of the device, and the plurality of locking members can fix the slider position of the linear slide; and,

[0010] A laser displacement sensor is provided at the end of the extension arm, and a laser probe of the laser displacement sensor is oriented perpendicular to the sliding direction of the linear slide to obtain rail corrugation data.

[0011] By adopting the above technical solution, the device is installed on the bottom surface of a device that can be moved on the rail through a fixed bracket, so that detection can be achieved while moving, which improves the detection efficiency and convenience; and the laser displacement sensor can be driven by a linear slide to move along the width direction of the rail, thereby realizing multi-position detection, that is, obtaining multi-area corrugation data on the top surface of the rail, thereby improving the reliability of rail corrugation detection; at the same time, the position of the laser displacement sensor can be adjusted by sliding the linear slide through the adjusting part, and the adjusting part can be extended from the top surface of the movable device, which improves the convenience of position adjustment and further improves the convenience of detection.

[0012] In some embodiments, the linear slide is an X-axis dovetail slide, and a rack is provided on the surface of the linear slide. The adjusting part includes a connecting rod and a gear sleeved on the connecting rod. The adjusting part is vertically inserted into the slider of the linear slide, and the gear of the adjusting part cooperates with the rack of the linear slide, so that the rotation of the adjusting part drives the slider of the linear slide to slide.

[0013] By adopting the above technical solution, the movement stability and positioning accuracy of the laser displacement sensor are improved by using an X-axis dovetail groove slide, thereby improving the detection reliability; and, by cooperating with the gear rack, the adjustment part rotates to drive the slider of the linear slide to slide, which has a simple structure and reliable movement, and further improves the positioning accuracy of the laser displacement sensor and improves the detection reliability.

[0014] In some embodiments, an adjustment pointer is provided at the top of the slider of the linear slide and close to the adjustment member. The indicating tip of the adjustment pointer is bent in a direction away from the adjustment member and is parallel to the top surface of the slider of the linear slide.

[0015] By adopting the above technical solution, the sliding is made visible by the adjustment pointer that slides synchronously with the slider, which makes it easier for the operator to determine the adjustment distance, thereby improving the detection reliability.

[0016] In some embodiments, the fixing bracket includes a back plate, a positioning plate disposed on the top of the back plate, and a mounting base disposed on the back of the back plate;

[0017] The linear slide is arranged on the front side of the back plate;

[0018] The extending direction of the positioning plate is parallel to the sliding direction of the linear slide, and the positioning plate is used to abut against the device;

[0019] The mounting base is used to be connected to the bottom surface of the device.

[0020] In some embodiments, the positioning plate has a first height so as to extend out of the top surface of the device, and an adjustment scale is provided on the top surface of the positioning plate, and the indicating tip of the adjustment pointer points to the adjustment scale.

[0021] In some embodiments, the plurality of locking members are provided with two, and one of the locking members is located on the side of the slider of the linear slide opposite to the adjusting member, and the other locking member is located on the side of the slider of the linear slide parallel to the adjusting member;

[0022] The locking member is threadedly connected to the slider of the linear slide, and the end surface thereof can abut against the surface of the linear slide.

[0023] By adopting the above technical solution, the locking reliability of the slider of the linear slide is improved through the locking members in two different directions, thereby improving the position stability of the laser displacement sensor and improving the detection reliability.

[0024] In some embodiments, a housing is provided at the end of the extension arm, and the laser displacement sensor is disposed in the housing.

[0025] In some embodiments, the stroke of the linear slide is not less than 57 mm.

[0026] The above technical solution can realize rail corrugation measurement in multiple areas of the rail top surface within the rail coordinate range of -25mm to +32mm using the laser displacement sensor, covering the locations where rail corrugation may occur due to factors such as poor wheel-rail contact, uneven track geometry, and curves of different radii, further improving detection reliability.

[0027] An embodiment of the present application also provides a rail detection device, including a detection chassis, a traveling mechanism and a meter wheel arranged at both ends of the detection chassis, the traveling mechanism and the meter wheel are used to travel on the rails, the bottom of the detection chassis is provided with any of the above-mentioned multi-area corrugation measuring devices on the top surface of the rail, and the top of the detection chassis is provided with a long strip adjustment hole parallel to the width direction of the rail, and the adjustment part of the multi-area corrugation measuring device on the top surface of the rail extends out of the adjustment hole.

[0028] By adopting the above technical solution, the multi-area corrugation measuring device on the top surface of the rail is moved longitudinally on the top surface of the rail through the traveling mechanism, and the traveling distance is obtained through the meter wheel, so that the rail position corresponding to the detection data can be obtained, which is convenient for subsequent maintenance; and the multi-area corrugation measuring device on the top surface of the rail is used to realize transverse multi-position detection, that is, to obtain the corrugation data of multiple areas on the top surface of the rail, thereby improving the reliability of rail corrugation detection.

[0029] In some embodiments, the detection box is used to be placed directly above the rails and has an inner side and an outer side, the inner side is located between the two rails, and the outer side is located on the outer side of the corresponding rails;

[0030] The laser displacement sensor of the multi-area corrugation measuring device on the top surface of the rail has a first detection position and a second detection position along the sliding direction of the linear slide, and an initial detection position located between the first detection position and the second detection position. The initial detection position is located on the center line of the detection chassis. The first detection position is close to the inner side of the detection chassis and is 32 mm away from the initial detection position. The second detection position is close to the outer side of the detection chassis and is 25 mm away from the initial detection position.

[0031] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the description in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the present application;

[0033] Figure 2 This is a side structural diagram of Example 1 of the present application;

[0034] Figure 3 This is a schematic diagram of the main structure of Example 2 of the present application;

[0035] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure of part A;

[0036] Figure 5 This is a schematic diagram of the partial structure of Example 2 of the present application from a top view angle.

[0037] Description of reference numerals:

[0038] 100. Rail top surface multi-area corrugation measuring device;

[0039] 10. Fixing bracket; 11. Back plate; 12. Positioning plate; 13. Mounting bracket;

[0040] 20. Linear slide; 21. Slide rail; 22. Slider; 23. Rack; 24. Adjustment member; 25. Locking member; 26. Extension arm; 27. Adjustment pointer; 28. Adjustment scale; 29. ​​Housing;

[0041] 30. Laser displacement sensor; 31. Laser probe;

[0042] 200. Detection chassis; 201. Adjustment hole; 210. Travel mechanism; 220. Taxi wheel. DETAILED DESCRIPTION

[0043] The following specific embodiments illustrate the implementation of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide an in-depth understanding of the present application, the following description will contain many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other unless there is a conflict.

[0044] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0045] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, "multiple" means two or more. Unless otherwise specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] Example 1:

[0047] See Figure 1-2 , Figure 1 Schematic diagram of the three-dimensional structure of the rail top surface multi-region corrugation measuring device 100; Figure 2 Schematic diagram of the side structure of the rail top surface multi-region corrugation measurement device 100.

[0048] The embodiment of the present application provides a multi-region corrugation measuring device 100 on the top surface of a rail, comprising a fixed bracket 10, on which a linear slide 20 is provided, and the linear slide 20 is connected to a laser displacement sensor 30. The laser displacement sensor 30 is driven by the linear slide 20 to move along the width direction of the rail, thereby realizing multi-position detection, that is, obtaining multi-region corrugation data on the top surface of the rail, thereby improving the reliability of rail corrugation detection. At the same time, the detection points can be flexibly adjusted according to actual needs, so that the device can adapt to rails of different types and specifications, as well as different measurement scenarios. Whether it is a straight track or a curved track, the detection points can be accurately arranged to ensure the comprehensiveness and accuracy of the detection results.

[0049] Specifically, the fixed bracket 10 is used to connect with the bottom surface of the equipment that can be moved on the rail, so that the device can detect while moving, thereby improving the detection efficiency and convenience.

[0050] The linear slide 20 includes a rail 21 and a slider 22. The rail 21 is fixed to the fixed bracket 10. The slider 22 is connected to an extension arm 26, which extends in the same direction as the linear slide 20. A laser displacement sensor 30 is mounted at the end of the extension arm 26. The laser probe 31 of the laser displacement sensor 30 is oriented perpendicular to the sliding direction of the linear slide 20 to obtain rail corrugation data.

[0051] The slider 22 of the linear slide 20 is further connected to an adjustment member 24. The adjustment member 24 is arranged perpendicular to the sliding direction of the linear slide 20 and can drive the slider 22 of the linear slide 20 to slide. The adjustment member 24 has a first length so as to extend above the top surface of the device, thereby facilitating manual adjustment by the operator, improving the convenience of position adjustment and further enhancing the convenience of testing.

[0052] The slider 22 of the linear slide 20 is also connected to multiple locking parts 25, which can fix the position of the slider 22 of the linear slide 20, that is, fix the position of the laser displacement sensor 30, to prevent the laser displacement sensor 30 from sliding and offsetting during the detection process, thereby improving the detection reliability.

[0053] In one embodiment, the linear slide 20 is an X-axis dovetail slide, which can improve the movement stability and positioning accuracy of the laser displacement sensor 30, thereby improving the detection reliability.

[0054] In one embodiment, a rack 23 is provided on the surface of the linear slide 20 (the specific tooth structure of the rack 23 is not shown in the figure. The gear rack matching is a conventional technology in this field. Those skilled in the art can select a specific tooth structure according to their needs), that is, a rack 23 is provided on the surface of the slide rail 21. The adjustment member 24 includes a connecting rod and a gear sleeved on the connecting rod. The adjustment member 24 is vertically inserted into the slider 22 of the linear slide 20, and the gear of the adjustment member 24 cooperates with the rack 23 of the linear slide 20, so that the adjustment member 24 rotates to drive the slider 22 of the linear slide 20 to slide. The structure is simple, the movement is reliable, and the positioning accuracy of the laser displacement sensor 30 is further improved, thereby improving the detection reliability.

[0055] In one embodiment, an adjustment pointer 27 is provided at the top of the slider 22 of the linear slide 20 and close to the adjustment member 24. The indicating tip of the adjustment pointer 27 is bent in the direction away from the adjustment member 24 and is parallel to the top surface of the slider 22 of the linear slide 20, so that the sliding is visible, which is convenient for the operator to determine the adjustment distance, thereby improving the detection reliability.

[0056] In one embodiment, the fixed bracket 10 includes a back plate 11, a positioning plate 12 disposed on the top of the back plate 11, and a mounting bracket 13 disposed on the back of the back plate 11. The linear slide 20 is disposed on the front of the back plate 11. The positioning plate 12 extends parallel to the sliding direction of the linear slide 20 and is configured to abut against the device. The mounting bracket 13 is configured to connect to the bottom surface of the device.

[0057] It should be noted that when the device is installed on the equipment, its installation position has certain requirements and needs to meet the detection needs. The positioning plate 12 can be abutted against the installation position on the equipment to improve the installation accuracy and thus improve the detection reliability.

[0058] In one embodiment, the positioning plate 12 has a first height to extend out of the top surface of the device, and an adjustment scale 28 is provided on the top surface of the positioning plate 12 , and the indicating tip of the adjustment pointer 27 points to the adjustment scale 28 .

[0059] In other alternative embodiments, the adjustment scale 28 may also be provided on the device on which the apparatus is installed.

[0060] In one embodiment, the locking member 25 is threadedly connected to the slider 22 of the linear slide 20 , and the end surface thereof can abut against the surface of the linear slide 20 , thereby locking the slider 22 at any sliding position.

[0061] There are two of the multiple locking members 25, and one locking member 25 is located on the side of the slider 22 of the linear slide 20 opposite to the adjusting member 24, and the other locking member 25 is located on the side of the slider 22 of the linear slide 20 parallel to the adjusting member 24. Through the two locking members 25 in different directions, the locking reliability of the slider 22 of the linear slide 20 is improved, thereby improving the position stability of the laser displacement sensor 30 and improving the detection reliability.

[0062] In one embodiment, a shell 29 is provided at the end of the extension arm 26, and the laser displacement sensor 30 is provided in the shell 29, thereby protecting the laser displacement sensor 30 and preventing damage and displacement of the laser displacement sensor 30 caused by bumps, thereby ensuring inspection reliability.

[0063] It should be noted that the rail coordinates (rail center) range of -25mm to +32mm is where corrugation usually occurs. This coordinate range may be closely related to track parameters such as gauge and superelevation. For example, when adjusting the gauge, it is necessary to ensure that the position of the rails within this coordinate range meets the design requirements to ensure the safe operation of the train. At the same time, this coordinate range may also be affected by factors such as the track curve radius and slope. On a curved track, due to the action of centrifugal force, the force conditions of the rails within this coordinate range will change, which may make defects such as corrugation more likely to occur.

[0064] Therefore, in one embodiment, the stroke of the linear slide 20 is not less than 57 mm, which can enable the laser displacement sensor 30 to measure rail corrugation in multiple areas of the rail top surface within the rail coordinate range of -25 mm to +32 mm, covering the locations where rail corrugation may occur due to factors such as poor wheel-rail contact, uneven track geometry, and curves of different radii, thereby further improving detection reliability.

[0065] Example 2:

[0066] See Figure 3-5 , Figure 3 This is a schematic diagram of the main structure of the rail detection equipment; Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure of part A; Figure 5 This is a schematic diagram of the partial structure of the rail detection equipment from a top-down perspective.

[0067] The embodiment of the present application further provides a rail detection device, including a detection chassis 200 , a traveling mechanism 210 and a meter wheel 220 arranged at both ends of the detection chassis 200 .

[0068] The traveling mechanism 210 and the meter wheel 220 are used for traveling on the rails, and the traveling distance can be obtained through the meter wheel 220 .

[0069] The bottom of the detection chassis 200 is provided with the multi-region corrugation measuring device 100 of Example 1, and the top of the detection chassis 200 is provided with a long strip adjustment hole 201 parallel to the width direction of the rail, and the adjustment part 24 of the multi-region corrugation measuring device 100 of the rail top surface extends out of the adjustment hole 201.

[0070] This method enables the rail top surface multi-region corrugation measuring device 100 to move longitudinally on the rail top surface through the traveling mechanism 210, and cooperates with the meter wheel 220 to obtain the rail position corresponding to the detection data, which is convenient for subsequent maintenance. At the same time, the rail top surface multi-region corrugation measuring device 100 can realize transverse multi-position detection, that is, obtain the rail top surface multi-region corrugation data, thereby improving the reliability of rail corrugation detection.

[0071] In one embodiment, the detection chassis 200 is used to be placed directly above the rails and has an inner side and an outer side, wherein the inner side is located between the two rails and the outer side is located outside the corresponding rails.

[0072] The laser displacement sensor 30 of the rail top surface multi-region corrugation measuring device 100 has a first detection position and a second detection position along the sliding direction of the linear slide 20 , and an initial detection position located between the first detection position and the second detection position.

[0073] The initial detection position a is located on the center line b of the detection chassis 200 .

[0074] The first detection position is close to the inner side of the detection box 200 and is 32 mm away from the initial detection position. The second detection position is close to the outer side of the detection box 200 and is 25 mm away from the initial detection position. This allows rail corrugation measurement in multiple areas of the rail top surface within the rail coordinate range of -25 mm to +32 mm, covering locations where rail corrugation may occur due to factors such as poor wheel-rail contact, uneven track geometry, and curves of different radii, further improving detection reliability.

[0075] In one embodiment, the multi-area corrugation measuring device 100 for the rail top surface has a positioning plate 12 and a mounting base 13. The positioning plate 12 extends into the adjustment hole 201 and abuts against its side wall, thereby facilitating the positioning of the mounting base 13 and the installation position of the detection chassis 200.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rail top surface multi-area corrugation measuring device, characterized in that: include: A fixed bracket, used to connect to the bottom surface of the equipment movable on the rail; A linear slide is provided on the fixed bracket, and the slider of the linear slide is connected to an extension arm, and the extension direction of the extension arm is the same as the sliding direction of the linear slide; the slider of the linear slide is also connected to an adjustment member and a plurality of locking members, the adjustment member is arranged perpendicular to the sliding direction of the linear slide, and can drive the slider of the linear slide to slide, the adjustment member has a first length to extend out of the top surface of the device, and the plurality of locking members can fix the slider position of the linear slide; and, A laser displacement sensor is provided at the end of the extension arm, and a laser probe of the laser displacement sensor is oriented perpendicular to the sliding direction of the linear slide to obtain rail corrugation data.

2. The rail top surface multi-area corrugation measuring device according to claim 1, characterized in that: The linear slide is an X-axis dovetail slide, and a rack is provided on the surface of the linear slide. The adjusting part includes a connecting rod and a gear sleeved on the connecting rod. The adjusting part is vertically inserted into the slider of the linear slide, and the gear of the adjusting part cooperates with the rack of the linear slide, so that the rotation of the adjusting part drives the slider of the linear slide to slide.

3. The rail top surface multi-area corrugation measuring device according to claim 1, characterized in that: An adjustment pointer is provided at the top of the slider of the linear slide and close to the adjustment member. The indicating tip of the adjustment pointer is bent in a direction away from the adjustment member and is parallel to the top surface of the slider of the linear slide.

4. The rail top surface multi-region corrugation measuring device according to claim 3, characterized in that: The fixing bracket includes a back plate, a positioning plate arranged on the top of the back plate, and a mounting base arranged on the back of the back plate; The linear slide is arranged on the front side of the back plate; The extending direction of the positioning plate is parallel to the sliding direction of the linear slide, and the positioning plate is used to abut against the device; The mounting base is used to be connected to the bottom surface of the device.

5. The rail top surface multi-region corrugation measuring device according to claim 4, characterized in that: The positioning plate has a first height so as to extend out of the top surface of the device, and an adjustment scale is provided on the top surface of the positioning plate, and the indicating tip of the adjustment pointer points to the adjustment scale.

6. The rail top surface multi-region corrugation measuring device according to claim 1, characterized in that: There are two of the plurality of locking members, one of which is located on the side of the slider of the linear slide opposite to the adjusting member, and the other of which is located on the side of the slider of the linear slide parallel to the adjusting member. The locking member is threadedly connected to the slider of the linear slide, and the end surface thereof can abut against the surface of the linear slide.

7. The rail top surface multi-region corrugation measuring device according to claim 1, characterized in that: A housing is provided at the end of the extension arm, and the laser displacement sensor is arranged in the housing.

8. The rail top surface multi-region corrugation measuring device according to claim 1, characterized in that: The stroke of the linear slide is not less than 57 mm.

9. A rail detection device, characterized in that: The invention comprises a detection chassis, a running mechanism and a meter wheel arranged at both ends of the detection chassis, wherein the running mechanism and the meter wheel are used for running on the rails, the bottom of the detection chassis is provided with a multi-region corrugation measuring device for the top surface of the rail as described in any one of claims 1 to 8, and the top of the detection chassis is provided with a long strip adjustment hole parallel to the width direction of the rail, and the adjustment part of the multi-region corrugation measuring device for the top surface of the rail extends out of the adjustment hole.

10. The rail detection device according to claim 9, characterized in that: The detection box is used to be placed directly above the rails and has an inner side and an outer side, wherein the inner side is located between the two rails and the outer side is located on the outer side of the corresponding rails; The laser displacement sensor of the multi-area corrugation measuring device on the top surface of the rail has a first detection position and a second detection position along the sliding direction of the linear slide, and an initial detection position located between the first detection position and the second detection position. The initial detection position is located on the center line of the detection chassis. The first detection position is close to the inner side of the detection chassis and is 32 mm away from the initial detection position. The second detection position is close to the outer side of the detection chassis and is 25 mm away from the initial detection position.

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