Rail head abrasion measuring device

Abstract

The utility model relates to a railhead abrasion measuring device. The railhead abrasion measuring device comprises a clamping mechanism which comprises a first clamping part, a second clamping part and a connecting part, the first clamping part and the second clamping part are arranged in a spaced mode in the first direction, the connecting part is connected between the first clamping part and the second clamping part, and the side, facing the second clamping part, of the first clamping part is provided with a first clamping face; the distance between the first clamping surface and the second clamping part is gradually increased in the direction away from the connecting part, so that the first clamping surface is a curved surface attached to the rail head lower jaw; the fixing mechanism is connected with the connecting part and located on the side, away from the first clamping part, of the second clamping part, and the fixing mechanism is provided with a fixing hole extending in the first direction; the measuring mechanism is arranged in the fixing hole in a penetrating mode, and the measuring mechanism is configured to move along the fixing hole. The rail head abrasion measuring device is stably clamped on the rail head of the steel rail through the clamping mechanism, and the abrasion of the rail head of the steel rail can be rapidly and accurately measured.

Description

Technical Field

[0001] This application relates to the field of track measurement technology, and in particular to a rail head wear measurement device. Background Technology

[0002] With the rapid development of the railway industry, the volume of heavy-haul railway freight has continued to increase, and the service life of rails has also increased, placing higher demands on rail performance. The rail head directly contacts the wheels, and on small-radius curves, the need for the rail to steer the wheels leads to accelerated wear on the rail head. According to relevant regulations, for lines with a permissible speed v ≤ 120 km / h, for 60 kg / m rails, vertical wear exceeding 9 mm on the main line is considered minor damage, and exceeding 11 mm is considered serious damage and requires removal from the line. For 75 kg / m rails, vertical wear exceeding 10 mm on the main line is considered minor damage, and exceeding 12 mm is considered serious damage and requires removal from the line. Therefore, to ensure safe train operation, accurate measurement of rail head wear is necessary.

[0003] In related technologies, common short rulers and vernier calipers are generally used to measure rail head wear. However, since the standard for judging wear damage is in millimeters, high-precision measurement is required. The lower jaw of the rail head has a certain curvature, which makes it difficult for ordinary short rulers and vernier calipers to accurately fit against the lower jaw of the rail head for accurate readings. This makes it difficult to accurately measure rail head wear and affects the accurate assessment of rail damage. Utility Model Content

[0004] Therefore, it is necessary to provide a rail head wear measuring device to address the problem that current measurement methods are insufficient for accurately measuring rail head wear.

[0005] A rail head wear measuring device, the rail head wear measuring device comprising:

[0006] A clamping mechanism includes a first clamping part, a second clamping part, and a connecting part. The first clamping part and the second clamping part are spaced apart along a first direction. The connecting part connects the first clamping part and the second clamping part. The first clamping part has a first clamping surface on the side facing the second clamping part. The distance between the first clamping surface and the second clamping part gradually increases in the direction away from the connecting part, so that the first clamping surface is a curved surface that fits against the lower jaw of the rail head.

[0007] A fixing mechanism is connected to the connecting part and is located on the side of the second clamping part away from the first clamping part. The fixing mechanism has a fixing hole extending along the first direction.

[0008] A measuring mechanism, which passes through the fixing hole and is configured to move along the fixing hole.

[0009] In one embodiment, the second clamping portion has a second clamping surface on the side facing the first clamping portion, and the size of the second clamping portion gradually decreases in the direction away from the connecting portion along the first direction, so that the second clamping surface is a curved surface that fits against the top of the rail head.

[0010] In one embodiment, the first clamping portion is sequentially connected to the connecting portion and the second clamping portion to form a clamping groove.

[0011] In one embodiment, the clamping mechanism further includes a fastening member, the second clamping portion having a fastening hole extending through it along the first direction, the fastening member passing through the fastening hole, and the fastening member being configured to move along the fastening hole and extend into the clamping groove.

[0012] In one embodiment, at least a portion of the fixing mechanism protrudes from the clamping mechanism in a second direction, and the fixing hole is disposed on the at least a portion of the fixing mechanism, wherein the second direction is perpendicular to the first direction.

[0013] In one embodiment, the fixing mechanism includes a first fixing part and a second fixing part. The first fixing part is connected to the connecting part and extends along the first direction. The second fixing part is connected to the first fixing part and extends along the second direction. The second fixing part is provided with the fixing hole.

[0014] In one embodiment, the measuring mechanism includes a first measuring component and a second measuring component. The first measuring component is connected to the fixing hole of the fixing mechanism via a first thread. The first measuring component has a measuring hole extending through it along the first direction. The second measuring component is connected to the measuring hole of the first measuring component via a second thread.

[0015] In one embodiment, the pitch of the second thread is smaller than the pitch of the first thread.

[0016] In one embodiment, the second measuring component has a contact head near the end of the clamping mechanism, and the center line of the contact head coincides with the center lines of the first measuring component and the second measuring component.

[0017] In one embodiment, the contact head has a hemispherical structure protruding toward the clamping mechanism.

[0018] The aforementioned rail head wear measuring device, during measurement, involves the first clamping part of the clamping mechanism fitting against the lower jaw of the rail head to be measured. This allows for precise reading of the rail head thickness, and by comparing it with the standard rail head thickness, the rail head wear value is calculated, and damage is assessed accordingly. Thus, the rail head wear measuring device is stably clamped onto the rail head by the clamping mechanism, and the measuring mechanism accurately measures the rail head thickness. This method enables rapid and accurate measurement of rail head wear, and is easy to carry, improving work efficiency and quality during on-site measurements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation structure of the rail head wear measuring device according to an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the overall structure of the rail head wear measuring device according to an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the structure of a rail head wear measuring device according to another embodiment of this application.

[0022] Figure 4 This is a partial cross-sectional view of the measuring mechanism according to an embodiment of this application.

[0023] Icon labels:

[0024] 10. Rail head wear measuring device; 20. Rail head;

[0025] 100. Clamping mechanism; 110. First clamping part; 111. First clamping surface; 120. Second clamping part; 121. Second clamping surface; 122. Fastening hole; 130. Connecting part; 140. Clamping groove; 150. Fastening component;

[0026] 200. Fixing mechanism; 210. First fixing part; 220. Second fixing part; 221. Fixing hole;

[0027] 300. Measuring mechanism; 310. First measuring component; 311. Measuring hole; 320. Second measuring component; 321. Contact head. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] See Figure 1 and Figure 2 As shown, a schematic diagram of the structure of the rail head wear measuring device 10 in one embodiment of this application is shown. The rail head wear measuring device 10 provided in one embodiment of this application includes a clamping mechanism 100, a fixing mechanism 200 and a measuring mechanism 300. It can accurately measure the wear of the rail head 20, and is easy to carry, which helps to improve work efficiency and ensure the safety of track operation.

[0035] The clamping mechanism 100 includes a first clamping part 110, a second clamping part 120, and a connecting part 130. The first clamping part 110 and the second clamping part 120 are spaced apart along a first direction, wherein the first direction refers to the vertical direction of the clamping mechanism 100 in the installed state, i.e. Figure 1 The height direction of the rail head 20mm. For example... Figure 1 and Figure 2 As shown, when the clamping mechanism 100 clamps onto the rail head 20, the first clamping portion 110 is located below the second clamping portion 120. A connecting portion 130 connects the first clamping portion 110 and the second clamping portion 120. The first clamping portion 110 has a first clamping surface 111 on the side facing the second clamping portion 120. The distance between the first clamping surface 111 and the second clamping portion 120 gradually increases in the direction away from the connecting portion 130, so that the first clamping surface 111 is a curved surface that fits against the lower jaw of the rail head 20, ensuring that the first clamping surface 111 of the first clamping portion 110 can closely fit the arc-shaped contour of the lower jaw of the rail head 20. It should be understood that the specific shape of the first clamping surface 111 of the first clamping portion 110 can be designed according to the actual application to adapt to rail heads 20 with different shapes.

[0036] The fixing mechanism 200 is connected to the connecting portion 130 of the clamping mechanism 100, and the fixing mechanism 200 is located on the side of the second clamping portion 120 opposite to the first clamping portion 110. In the installed state, the second clamping portion 120 is located above the first clamping portion 110, and the fixing mechanism 200 is located above the second clamping portion 120. The fixing mechanism 200 has a fixing hole 221 extending along a first direction, for example, the fixing hole 221 is a circular through hole, and the center line of the fixing hole 221 extends along the first direction for mounting the measuring mechanism 300.

[0037] A measuring mechanism 300 passes through a fixing hole 221 and is configured to move along the fixing hole 221. The measuring mechanism 300 may be configured as a generally cylindrical structure for mounting within the fixing hole 221 of the fixing mechanism 200. Exemplarily, the surface of the measuring mechanism 300 is provided with numerical graduations, and the reading positions of the measuring mechanism 300 are as follows: Figure 2 As shown at point a in the diagram. For ease of understanding, this embodiment provides the following test procedure: First, a new rail is used for measurement, and the initial reading of the measuring mechanism 300 is recorded to obtain the thickness of the unworn rail head 20. Then, the clamping mechanism 100 is clamped onto the rail head 20 to be measured. When the measuring mechanism 300 moves along the fixing hole 221 to the end contacting the wear surface of the rail head 20, the actual reading of the measuring mechanism 300 is recorded, and the difference between the actual reading and the initial reading is calculated to obtain the vertical wear value of the rail head 20.

[0038] Through the above structural design, during measurement, the first clamping part 110 of the clamping mechanism 100 is aligned with the lower jaw of the rail head 20 to be measured, allowing for accurate reading of the rail head 20 thickness. By comparing the thickness value with that of a standard rail head 20, the wear value of the rail head 20 is calculated, and damage is assessed accordingly. Thus, the rail head wear measuring device 10 of this embodiment is stably clamped onto the rail head 20 by the clamping mechanism 100, and the thickness of the rail head 20 is accurately measured by the measuring mechanism 300. This allows for rapid and accurate measurement of rail head 20 wear, and is also convenient to carry, improving work efficiency and quality during on-site measurements.

[0039] Further, see Figure 2 As shown, in some embodiments, the second clamping portion 120 has a second clamping surface 121 on the side facing the first clamping portion 110, which is the bottom surface of the second clamping portion 120. The size of the second clamping portion 120 gradually decreases in the direction away from the connecting portion 130 along the first direction, so that the second clamping surface 121 is a curved surface that fits against the top of the rail head 20. When the clamping mechanism 100 clamps on the rail head 20, the second clamping surface 121 forms a contour that matches the arc of the top of the rail head 20, that is, the second clamping surface 121 fits against the top of the rail head 20, while the first clamping surface 111 fits against the lower jaw of the rail head 20, forming a double curved surface positioning, which can ensure that the clamping mechanism 100 fits as closely as possible to the outer surface of the rail head 20, avoid the clamping mechanism 100 from tilting or shifting, and further improve the installation stability and measurement accuracy of the clamping mechanism 100.

[0040] Furthermore, the first clamping part 110 is sequentially connected to the connecting part 130 and the second clamping part 120 to form a clamping groove 140. The clamping groove 140 has a C-shaped structure to match the cross-sectional profile of the rail head 20, thereby guiding the clamping mechanism 100 to quickly position itself at the measurement position of the rail head 20. When the clamping mechanism 100 clamps onto the rail head 20, the rail head 20 is embedded in the clamping groove 140, so that the inner wall of the clamping groove 140 fits against the outer surface of the rail head 20, forming a wrapping fixation, improving clamping stability and preventing displacement during measurement.

[0041] See Figure 3 As shown, in some embodiments, the clamping mechanism 100 further includes a fastening member 150, which is used to further improve the clamping stability of the clamping mechanism 100. Specifically, the second clamping portion 120 is provided with a fastening hole 122 through it in a first direction, and the fastening member 150 passes through the fastening hole 122. The fastening member 150 is configured to move along the fastening hole 122 and extend into the clamping groove 140. For example, the fastening hole 122 can be a circular threaded hole with internal threads on its inner wall. Correspondingly, the fastening member 150 can be a bolt structure with external threads on its outer wall. The fastening member 150 is threadedly connected to the second clamping portion 120 through the fastening hole 122, and the fastening member 150 can pass through the fastening hole 122 and extend into the clamping groove 140. Therefore, for rail heads 20 with different wear levels or sizes, the clamping force of the clamping mechanism 100 on the rail head 20 can be adjusted by rotating the fastening component 150, ensuring that the clamping mechanism 100 maintains stable clamping during the measurement process. This is especially suitable for scenarios where severe wear causes changes in the size of the rail head 20, which helps to ensure the reliability of the measurement data.

[0042] Furthermore, in some embodiments, at least a portion of the structure of the fixing mechanism 200 protrudes from the clamping mechanism 100 in a second direction, and a fixing hole 221 is provided on at least a portion of the structure of the fixing mechanism 200, wherein the second direction is perpendicular to the first direction. In this embodiment, the second direction refers to the horizontal direction of the clamping mechanism 100 in the installed state, i.e. Figure 1 The rail head 20 is positioned along its length. When the measuring mechanism 300 is installed in the fixing hole 221 of the fixing mechanism 200, the measuring mechanism 300 and the clamping mechanism 100 are staggered along the length of the rail head 20, so that the clamping mechanism 100 can clamp the complete part (i.e., the unworn part) of the rail head 20, while the measuring mechanism 300 extends above the worn part of the rail head 20 to measure the thickness of the worn part. This facilitates fixing the clamping mechanism 100 and accurately measures the wear of the rail head 20.

[0043] Specifically, in some embodiments, the fixing mechanism 200 includes a first fixing part 210 and a second fixing part 220. The first fixing part 210 extends along a first direction, its bottom end is connected to the top end of the connecting part 130, and its top end is connected to the second fixing part 220. The second fixing part 220 extends along a second direction and has a fixing hole 221, which is spaced apart from the clamping mechanism 100 along the second direction. Therefore, when the measuring mechanism 300 is installed in the fixing hole 221, it can avoid interference with the clamping mechanism 100, while facilitating the clamping mechanism 100 to be clamped onto the rail head 20, thus improving the convenience of the measurement operation.

[0044] See Figure 2 and Figure 4 As shown, in some embodiments, the measuring mechanism 300 includes a first measuring component 310 and a second measuring component 320, with the first measuring component 310 sleeved outside the second measuring component 320. Specifically, the outer wall of the first measuring component 310 and the inner wall of the fixing hole 221 of the fixing mechanism 200 are provided with mutually engaging first threads, and the first measuring component 310 is connected to the fixing hole 221 of the fixing mechanism 200 through the first threads. The first measuring component 310 has a generally cylindrical structure and has a measuring hole 311 inside. The measuring hole 311 extends along a first direction and penetrates the entire first measuring component 310; for example, the measuring hole 311 can be a cylindrical through hole. The second measuring component 320 also has a cylindrical structure, and the outer wall of the second measuring component 320 and the inner wall of the measuring hole 311 of the first measuring component 310 are provided with mutually engaging second threads, and the second measuring component 320 is connected to the measuring hole 311 of the first measuring component 310 through the second threads.

[0045] The outer wall of the first measuring component 310 is provided with a coarse adjustment scale, for example, the range of the coarse adjustment scale is 1-10cm. The outer wall of the second measuring component 320 is provided with a fine adjustment scale, for example, the range of the fine adjustment scale is 1-100mm. Furthermore, the pitch of the second thread is smaller than the pitch of the first thread. Therefore, when the first measuring component 310 is rotated, the measuring mechanism 300 as a whole can be quickly and coarsely adjusted in the first direction, thereby obtaining an approximate thickness value based on the coarse adjustment scale on the first measuring component 310, which is suitable for scenarios requiring rapid measurement of rail head 20 wear and improves measurement efficiency. When the second measuring component 320 is rotated, the second measuring component 320 can be finely adjusted in the first direction, thereby obtaining an accurate thickness value based on the fine adjustment scale on the second measuring component 320, which is suitable for scenarios requiring precise measurement of rail head 20 wear and improves measurement accuracy.

[0046] Of course, it should be understood that the ranges of the coarse and fine numerical scales in the above embodiments are merely examples. In practical applications, the range of the numerical scale can be flexibly set according to the measurement accuracy requirements; for example, the accuracy of the fine numerical scale can be accurate to 0.01 mm.

[0047] Furthermore, in some embodiments, the second measuring component 320 has a contact head 321 at its end near the clamping mechanism 100, and the centerline of the contact head 321 coincides with the centerlines of the first measuring component 310 and the second measuring component 320. In some embodiments, the contact head 321 may have a hemispherical structure protruding towards the clamping mechanism 100. The hemispherical contact head 321 can adapt to the irregular shape of the wear surface of the rail head 20, ensuring that the lowest point of the contact head 321 along the centerline contacts the rail head 20, i.e., single-point perpendicular contact, thereby avoiding measurement deviations caused by the tilt of the contact surface and improving measurement reliability.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A rail head wear measuring device, characterized in that, The rail head wear measuring device includes: A clamping mechanism includes a first clamping part, a second clamping part, and a connecting part. The first clamping part and the second clamping part are spaced apart along a first direction. The connecting part connects the first clamping part and the second clamping part. The first clamping part has a first clamping surface on the side facing the second clamping part. The distance between the first clamping surface and the second clamping part gradually increases in the direction away from the connecting part, so that the first clamping surface is a curved surface that fits against the lower jaw of the rail head. A fixing mechanism is connected to the connecting part and is located on the side of the second clamping part away from the first clamping part. The fixing mechanism has a fixing hole extending along the first direction. A measuring mechanism, which passes through the fixing hole and is configured to move along the fixing hole.

2. The rail head wear measuring device according to claim 1, characterized in that, The second clamping part has a second clamping surface on the side facing the first clamping part. The size of the second clamping part gradually decreases in the direction away from the connecting part along the first direction, so that the second clamping surface is a curved surface that fits against the top of the rail head.

3. The rail head wear measuring device according to claim 1, characterized in that, The first clamping part is sequentially connected to the connecting part and the second clamping part to form a clamping groove.

4. The rail head wear measuring device according to claim 3, characterized in that, The clamping mechanism further includes a fastening component. The second clamping part has a fastening hole extending through it along the first direction. The fastening component passes through the fastening hole and is configured to move along the fastening hole and extend into the clamping groove.

5. The rail head wear measuring device according to claim 1, characterized in that, At least a portion of the fixing mechanism protrudes from the clamping mechanism in a second direction, and the fixing hole is disposed on the at least a portion of the fixing mechanism, wherein the second direction is perpendicular to the first direction.

6. The rail head wear measuring device according to claim 5, characterized in that, The fixing mechanism includes a first fixing part and a second fixing part. The first fixing part is connected to the connecting part and extends along the first direction. The second fixing part is connected to the first fixing part and extends along the second direction. The second fixing part is provided with the fixing hole.

7. The rail head wear measuring device according to any one of claims 1 to 6, characterized in that, The measuring mechanism includes a first measuring component and a second measuring component. The first measuring component is connected to the fixing hole of the fixing mechanism via a first thread. The first measuring component has a measuring hole extending through it along the first direction. The second measuring component is connected to the measuring hole of the first measuring component via a second thread.

8. The rail head wear measuring device according to claim 7, characterized in that, The pitch of the second thread is less than the pitch of the first thread.

9. The rail head wear measuring device according to claim 7, characterized in that, The second measuring component has a contact head at its end near the clamping mechanism, and the center line of the contact head coincides with the center lines of the first measuring component and the second measuring component.

10. The rail head wear measuring device according to claim 9, characterized in that, The contact head has a hemispherical structure that protrudes toward the clamping mechanism.

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