Special-shaped rail profiling heel dislocation modulus measuring device

Abstract

The invention discloses a device for measuring the dislocation modulus of a profiled heel end of a special-shaped rail. The device comprises a clamping head, two vernier fixing rulers and two sliding measuring rulers, wherein the clamping head is detachably clamped and fixed on a rail head of a steel rail; the two vernier fixing rulers extend vertically and are fixed on the clamping head; the two sliding measuring rulers are used for being arranged on the two sides of a rail top flash fixed to the top end of a steel rail head respectively. The two sliding measuring rulers are used for vertically sliding during measurement so that the bottom ends of the two sliding measuring rulers can abut against the two rail top interfaces of the junctions of the vertical edges on the two sides of the rail top flash and the rail head rail top surface of the steel rail respectively, and then the two vernier fixing rulers are read to be aligned and indicated on the two sliding measuring rulers respectively. And the vertical dislocation modulus of the interface of the two rail tops can be obtained. The device disclosed by the invention is simple in measurement process operation, time-saving and labor-saving, accurate in measurement data, low in use and maintenance cost, low in requirement on an operator and independent of automation and software analysis precision.

Description

Technical Field

[0001] The present invention relates to the technical field of turnouts, and in particular to a device for measuring the heel-end misalignment modulus of a special-shaped rail. Background Art

[0002] As a key component for guiding vehicle line change, the turnout point rail is generally manufactured with asymmetric cross-section rails. The heel end needs to be connected to the standard rail of the line through hot die forging (hereinafter referred to as special-shaped rail). At present, the more advanced hot die forging processes all use integral dies. In order to ensure that the rails can be smoothly put into and out of the die before and after hot die forging, the parting surface is basically set on the maximum projected cross-sectional area with the rail head, rail waist and rail bottom width as the center line. The integral die is divided into upper and lower dies with the parting surface as the boundary to perform hot die forging on the heel end of the special-shaped rail. Before starting forging, the upper and lower dies need to be installed in alignment with the cavity interface to ensure that the metal does not misalign or misaligns slightly during the forming and flowing process in the die cavity during the forging process, thereby reducing the misalignment of the heel end of the special-shaped rail after forging, reducing the quality risk of subsequent processing, and improving the quality pass rate.

[0003] Due to the different metal extension, the cross-section of the rear end of the special-shaped rail heel end after forging has obvious and large unevenness on the end face, which is not easy to compare and measure the rail head misalignment. At the same time, the machining allowance of the top surface of the rail head is small. In order to reduce the adverse effects of the horizontal left and right misalignment in the forging process of the special-shaped rail heel end on subsequent processing, in the existing conventional processing, the special-shaped rail heel end forged for the first time after the mold is installed needs to use a circular saw to cut a cross-section of the rail before and after the forming forging and measure and compare it with the standard rail cross-section template. If the misalignment is large (greater than 0.5mm), it is necessary to readjust the left and right positions of the upper and lower molds, and then cut and measure again to finally meet the misalignment technical requirements (no more than 0.3mm).

[0004] The traditional slicing detection method requires that the heel end of the special-shaped rail be forged and cooled to room temperature before being moved to a sawing machine for sawing and comparison measurement. This process takes about 4 hours, during which the forging process needs to be stopped and waited. It will not only significantly affect production efficiency, but also significantly increase mold adjustment costs, which is time-consuming and labor-intensive, and does not meet the company's development requirements of reducing costs and increasing efficiency.

[0005] At present, there are also patents introducing two tools, means and methods that can be used to detect the modulus mismatch of forgings, such as Patent 1 CN206919811U, a tool for detecting the modulus mismatch of connecting rod blank forging dies. The tool uses left and right measuring blocks with fixed and angle adjustment to detect the modulus mismatch of forging blanks. It has high detection efficiency and is easy to use, but it cannot be used to measure the die mismatch of the forging flash at the heel end of special-shaped rails.

[0006] For example, Patent 2 CN108050935A discloses a method for rapid online detection of modulus error of precision front axle forgings. This method uses an industrial camera to take all-round photos, and then through image and data splicing processing, converts the measured coordinates with the design coordinates to obtain the modulus error of the forging, thereby judging whether the forging quality is qualified. This method can realize rapid online detection, but has high usage and maintenance costs, high operating requirements, and is highly dependent on automation and software analysis accuracy. Summary of the Invention

[0007] The present invention provides a device for measuring the modulus of heel-end misalignment of special-shaped rails, so as to solve the technical problems of existing measuring devices and measuring methods, such as significantly affecting production efficiency, increasing mold adjustment costs, consuming time and labor, not meeting the development requirements of enterprises to reduce costs and increase efficiency, and having high use and maintenance costs, high operating requirements, and high dependence on automation and software analysis accuracy.

[0008] The technical solution adopted in the present invention is as follows:

[0009] A device for measuring the misalignment modulus of the heel and end of a special-shaped rail press, comprising: a clamping head for detachably clamping and fixing on a rail head, two vernier fixed rulers extending vertically and fixed on the clamping head, and two sliding measuring rulers arranged vertically and fixed on the clamping head in a manner that allows for vertical sliding adjustment; the two sliding measuring rulers are arranged in coordination with the two vernier fixed rulers, and the two sliding measuring rulers are used to be respectively arranged on both sides of a rail top burr fixed at the top end of the rail head; the two sliding measuring rulers are used to slide vertically during measurement so that their bottom ends respectively abut against two rail top interfaces where vertical edges on both sides of the rail top burr intersect with the top surface of the rail head, and the vertical misalignment modulus of the two rail top interfaces can be obtained by reading the readings on the two sliding measuring rulers indicated by the two vernier fixed rulers.

[0010] Furthermore, the clamping head is provided with two vertical guide grooves which are arranged at intervals in the horizontal direction and extend vertically through the clamping head, and the two sliding measuring rulers are respectively slidably installed in the two vertical guide grooves; the clamping head includes two groups of first locking parts, which are respectively connected to the clamping head, and the ends of the first locking parts are passed through the clamping head and extended into the corresponding vertical guide grooves to tighten the corresponding sliding measuring rulers, thereby fixing the sliding measuring rulers in the corresponding vertical guide grooves.

[0011] Furthermore, the clamping head on one side of each vertical guide groove is marked with scale lines extending vertically to form a vernier fixed scale; the bottom edge of each sliding measuring scale is inclined and cut to form an inclined surface intersecting with its outer edge away from the rail top burr, thereby forming a tip between the inclined surface and the inner side surface of the sliding measuring scale for abutting against the interface between the corresponding side rail top.

[0012] Furthermore, the chuck also includes a left chuck and a right chuck arranged opposite to each other, and the left chuck and the right chuck are used to be fixed on both sides of the rail head by relative suction and tightening by the two sides of the rail head; two vernier fixed scales are respectively provided on the left chuck and the right chuck, and two sliding measuring scales are also respectively provided on the left chuck and the right chuck.

[0013] Furthermore, both the left clamp and the right clamp include a support frame and a ferromagnet fixed on the inner side of the support frame; the support frame is used to be clamped onto the rail head from one side of the rail head after being opened; the ferromagnet is used to suck the rail head tightly to fix the support frame to the rail head.

[0014] Furthermore, the support frame includes a transverse plate arranged horizontally, a vertical plate connected to the transverse plate and arranged vertically, and a supporting plate hinged to the bottom end of the vertical plate through a rotating shaft; the supporting plate is used to rotate under the action of external force, thereby causing the support frame to open outward so as to be clamped onto the rail head from the outside of the rail head; the ferromagnetic body is fixed on the inner side surface of the supporting plate for tightening the lower jaw of the rail head on the lower side of the rail head, thereby fixing the support frame to the rail head.

[0015] Furthermore, the support frames of the left clamp and the right clamp are connected above the rail head through a first concave-convex matching structure to achieve the connection and positioning of the left clamp and the right clamp; the clamping head also includes a second locking piece arranged through the first concave-convex matching structure to lock and fix the two sets of support frames in a positioned connection through the second locking piece.

[0016] Furthermore, the left chuck and the right chuck also include a sliding seat slidably mounted on the transverse plate, and a third locking member for locking the sliding seat to the corresponding transverse plate; the sliding seat is provided with an upper limit slot vertically passing through it, and the transverse plate is provided with a lower guide slot vertically passing through it, the upper limit slot is vertically connected to the lower guide slot to form a vertical guide groove, and the vernier fixed ruler is arranged on the sliding seat.

[0017] Furthermore, the size of the upper limit slot matches the outer dimensions of the sliding measuring ruler; the front-to-back dimensions of the lower guide slot match the thickness of the sliding measuring ruler, and the left-right width of the lower guide slot is greater than the width of the sliding measuring ruler.

[0018] Furthermore, a second concave-convex matching structure is provided between the two sliding seats for positioning and connecting the two. The chuck also includes a fourth locking piece provided through the second concave-convex matching structure to lock and fix the two sets of sliding seats in a positioned connection through the fourth locking piece.

[0019] The present invention has the following beneficial effects:

[0020] When the misalignment modulus measuring device for the heel end of a profiled rail is used to measure the misalignment modulus, the clamping head is first clamped and fixed to the rail head to be measured, and then the two sliding measuring rulers are driven to slide down respectively so that the bottom ends thereof respectively abut against the two rail top interfaces, which are the two interfaces between the vertical edges on both sides of the rail top fin and the rail top surface of the rail head; since the two vernier fixed rulers are set to the same height on the clamping head, when there is misalignment modulus on both sides of the profiled heel end, that is, when there is a spatial height difference between the rail top interfaces on both sides of the rail top fin, as shown in the figure, the vertical heights of the two sliding measuring rulers are different, and at the same time, the scales of the sliding measuring rulers aligned with the "0" scale lines on the two vernier fixed rulers are different. By reading the difference between the two scales on the two sliding measuring rulers aligned with the two "0" scale lines, the misalignment modulus of the profiled heel end of the profiled rail can be easily, quickly and accurately obtained. Compared with traditional measurement methods, the device of the present invention has a simple measurement process, saves time and effort, and measures accurate data. Compared with traditional slice sample measurement methods, it can significantly improve measurement efficiency, has high accuracy, low use and maintenance costs, low operator requirements, and does not rely on automation and software analysis accuracy.

[0021] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 Schematic diagram of a device for measuring the heel-end misalignment modulus of a profiled rail and a rail head clamping test according to a preferred embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the main structure of the device for measuring the heel-end misalignment modulus of the medium-profile rail;

[0025] Figure 3 yes Figure 1 Schematic diagram of the left view structure;

[0026] Figure 4 Schematic diagram of fault modulus measurement.

[0027] Legend:

[0028] 11. Rail head; 111. Rail top surface; 112. Rail head jaw; 12. Rail top flash;

[0029] 2. Chuck; 201. Support frame; 2011. Horizontal plate; 2012. Vertical plate; 2013. Rotating shaft; 2014. Support plate; 202. Ferromagnetic body; 203. First concave-convex fitting structure; 204. Sliding seat; 205. Third locking member; 206. Second concave-convex fitting structure; 21. First locking member; 22. Left chuck; 23. Right chuck; 24. Second locking member; 25. Fourth locking member;

[0030] 3. Vernier fixed ruler;

[0031] 4. Slide the measuring ruler. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0033] Reference Figure 1 and Figure 3 A preferred embodiment of the present invention provides a device for measuring the heel-end misalignment modulus of a profiled rail, comprising: a clamping head 2 for detachably clamping and fixing to a rail head 11, two vertically extending fixed vernier rulers 3 fixed to the clamping head 2, and two vertically arranged sliding measuring rulers 4 fixed to the clamping head 2 in a manner adjustable to vertical sliding motion. The two sliding measuring rulers 4 are arranged in a one-to-one coordination with the two fixed vernier rulers 3, and the two sliding measuring rulers 4 are respectively arranged on both sides of a rail top burr 12 fixed to the top of the rail head 11. During measurement, the two sliding measuring rulers 4 are configured to slide vertically so that their bottom ends respectively contact two rail top interfaces where the vertical edges on both sides of the rail top burr 12 intersect with the rail top surface 111 of the rail head 11. The vertical misalignment modulus of the two rail top interfaces can be obtained by reading the readings on the two sliding measuring rulers 4 indicated by the alignment of the two fixed vernier rulers 3.

[0034] When the misalignment modulus measuring device for the heel end of a profiled rail of the present invention is used to measure the misalignment modulus, the clamping head 2 is first clamped and fixed to the rail head 11 to be measured, and then the two sliding measuring rulers 4 are driven to slide down respectively so that the bottom ends thereof respectively abut against two rail top interfaces, which are the two interfaces between the vertical edges on both sides of the rail top burr 12 and the rail top surface 111 of the rail head 11; since the two vernier fixed rulers 3 are set at the same height on the clamping head 2, when there is misalignment modulus on both sides of the profiled heel end, that is, when there is a spatial height difference between the rail top interfaces on both sides of the rail top burr 12, as shown in FIG. Figure 4As shown, the two sliding measuring scales 4 are at different vertical heights, and the scales of the sliding measuring scales 4 aligned with the "0" marks on the two vernier fixed scales 3 are different. By reading the difference between the two scale marks on the two sliding measuring scales 4 with the two "0" marks aligned, the misalignment modulus of the profiled rail's heel end can be easily, quickly, and accurately determined. Compared to traditional measurement methods, the device of the present invention offers a simple measurement process, saves time and effort, and provides accurate measurement data. Compared to traditional sliced ​​sample measurement methods, it significantly improves measurement efficiency, has high accuracy, low usage and maintenance costs, and requires less operator input, without relying on automation or software analysis accuracy.

[0035] Alternatively, as Figure 2 As shown, the chuck 2 is provided with two vertical guide grooves spaced laterally apart and extending vertically through the chuck 2. Two sliding measuring scales 4 are slidably mounted in the two vertical guide grooves. The chuck 2 includes two sets of first locking members 21. The two sets of first locking members 21 are respectively connected to the chuck 2. The ends of the first locking members 21 extend through the chuck 2 and extend into the corresponding vertical guide grooves to tighten the corresponding sliding measuring scales 4, thereby securing the sliding measuring scales 4 in the corresponding vertical guide grooves. In this optional embodiment, the first locking members 21 are locking screws that are threadedly connected to the chuck 2. The ends of the locking screws extend into the vertical guide grooves to tighten the sliding measuring scales 4 in the vertical guide grooves. After adjusting the bottom ends of the sliding measuring scales to abut the corresponding rail-top interface, the sliding measuring scales 4 are secured in the corresponding vertical guide grooves so that the "0" mark of the vernier fixed scale 3 is aligned with the scale on the sliding measuring scale 4, thereby improving the accuracy of the reading.

[0036] In this option, if Figure 2 As shown, the clamping head 2 on one side of each vertical guide groove is marked with scale lines extending vertically to form a fixed vernier scale 3. This operating method not only accurately fixes the fixed vernier scale 3, but also reduces the need for an external vernier scale, thereby simplifying the structure of the entire device and making operation simple and convenient. The bottom edge of each sliding measuring scale 4 is beveled and cut to form an inclined surface that intersects with its outer edge away from the rail top burr 12. This further forms a tip between the inclined surface and the inner side of the sliding measuring scale 4 for abutting the corresponding side rail top interface. The use of the tip to indicate the position of the rail top interface not only ensures precise abutment on the rail top interface, but also allows the naked eye to easily determine whether the abutment position is correct and whether the abutment is in place, thereby effectively improving the measurement accuracy of the misalignment modulus.

[0037] Alternatively, as Figure 1 and Figure 2As shown, the clamping head 2 also includes a left clamping head 22 and a right clamping head 23 arranged opposite each other. The left clamping head 22 and the right clamping head 23 are used to be fixed to the rail head 11 on both sides by suction. In this optional solution, since the left clamping head 22 and the right clamping head 23 are respectively connected to the rail head 11 by suction, it is not only convenient for the clamping head 2 to be quickly installed and removed, but also convenient for flexible selection of locations on the rail head 11 for clamping and fixing, thereby adapting to the installation requirements on rail heads 11 of different specifications. Two fixed vernier scales 3 are respectively provided on the left clamping head 22 and the right clamping head 23, and two sliding measuring scales 4 are also respectively provided on the left clamping head 22 and the right clamping head 23.

[0038] In this option, if Figure 2 As shown, both the left clamp 22 and the right clamp 23 include a support frame 201 and a ferromagnetic body 202 fixed to the inner side of the support frame 201. The support frame 201 is used to be clamped onto the rail head 11 from one side after being opened. The ferromagnetic body 202 is used to firmly attract the rail head 11, thereby fixing the support frame 201 to the rail head 11.

[0039] In a specific embodiment of this optional solution, the support frame 201 includes a transverse plate 2011 disposed horizontally, a vertical plate 2012 connected to the transverse plate 2011 and disposed vertically, and a support plate 2014 hinged to the bottom end of the vertical plate 2012 via a rotating shaft 2013. The support plate 2014 is configured to rotate in response to an external force, thereby causing the support frame 201 to open outward and engage the rail head 11 from the outside. A ferromagnetic member 202 is secured to the inner side of the support plate 2014 to securely engage the lower jaw 112 on the underside of the rail head 11, thereby securing the support frame 201 to the rail head 11. In a specific embodiment of this optional solution, the support frame 201 has a simple structural setting and can be easily assembled and fixed on the rail head 11 through the cooperation of the support plate 2014 and the ferromagnetic body 202. At the same time, through the suction effect of the ferromagnetic body 202 and the rail head 11, the position of the support frame 201 installed and fixed relative to the rail head 11 can be adjusted, thereby adapting to the installation requirements on rail heads 11 of different specifications.

[0040] Preferably, if Figure 2As shown, the support frames 201 of the left clamp 22 and the right clamp 23 are also connected above the rail head 11 through a first concave-convex matching structure 203 to achieve the connection and positioning of the left clamp 22 and the right clamp 23. The clamping head 2 also includes a second locking member 24 provided through the first concave-convex matching structure 203 to lock and fix the two groups of support frames 201 connected in a positioned manner through the second locking member 24. In this preferred embodiment, the relative positions of the support frames 201 on both sides can be adjusted through the first concave-convex matching structure 203 so that the two correspond accurately, so as to solve the problem that when there is a processing error on both sides of the rail head 11, the two groups of support frames 201 positioned on both sides of the rail head 11 are misaligned, thereby affecting the measurement accuracy; on the other hand, as Figure 2 As shown, the first concave-convex matching structure 203 has a long matching surface along the width direction of the rail head 11, thereby meeting the measurement of the heel-end misalignment modulus of various special-shaped rails of different specifications and widths; in addition, the second locking member 24 is a locking screw, which is threadedly connected to the concave portion of the end of the support frame 201 of the right clamp 23, and the end of the locking screw presses against the convex portion of the end of the support frame 201 of the left clamp 22 to lock and fix the first concave-convex matching structure 203, thereby fixing the two sets of support frames 201 after connection and positioning.

[0041] Alternatively, as Figure 2 As shown, the left and right clamping heads 22 and 23 further include a sliding seat 204 slidably mounted on a transverse plate 2011, and a third locking member 205 for locking the sliding seat 204 to the corresponding transverse plate 2011. The sliding seat 204 has an upper limit slot extending vertically therethrough, while the transverse plate 2011 has a lower guide slot extending vertically therethrough. The upper limit slot and the lower guide slot are vertically connected to form a vertical guide slot, and the vernier fixed scale 3 is disposed on the sliding seat 204. In this alternative embodiment, the provision of the sliding seat 204 allows the vertical guide slot to be formed in the upper limit slot and the lower guide slot, which are arranged sequentially and spaced apart from each other, thereby more accurately guiding and limiting the sliding movement of the sliding measuring scale 4, thereby improving measurement accuracy.

[0042] Preferably, if Figure 2 As shown, the dimensions of the upper limit slot match the outer dimensions of the sliding measuring ruler 4, providing precise positioning and guidance for the sliding of the sliding measuring ruler 4. The front-to-back dimensions of the lower guide slot match the thickness of the sliding measuring ruler 4, and the left-to-right width of the lower guide slot is greater than the width of the sliding measuring ruler 4. This allows the horizontal position of the sliding measuring ruler 4 to be adjusted within the lower guide slot by making the left-to-right width of the lower guide slot greater than the width of the sliding measuring ruler 4, when the width of the rail head 11 varies, resulting in different lateral engagement positions of the first concave-convex engagement structure 203 and, in turn, different lateral positions of the two lower guide slots. This allows the bottom tip of the vertically sliding sliding measuring ruler 4 to accurately abut the rail-top interface.

[0043] Preferably, if Figure 2 As shown, a second concave-convex fitting structure 206 is provided between the two sliding seats 204 for positioning and connecting the two. The chuck 2 also includes a fourth locking member 25 provided through the second concave-convex fitting structure 206, which is used to lock and fix the two sets of sliding seats 204 in a positioned and connected manner. In this preferred embodiment, the function and configuration of the second concave-convex fitting structure 206 are similar to those of the first concave-convex fitting structure 203, and are used to adjust the relative positions of the two sets of sliding seats 204 so that they accurately correspond to each other, thereby aligning the height positions of the two vernier fixed scales 3 to improve the measurement accuracy of the misalignment modulus. In addition, the fourth locking member 25 is a locking screw that is threadedly connected to the concave portion of the end of the sliding seat 204 of the right chuck 23, and the end of the locking screw abuts against the convex portion of the end of the sliding seat 204 of the left chuck 22 to lock and fix the second concave-convex fitting structure 206, thereby fixing the two sets of sliding seats 204 after being connected and positioned.

[0044] The specific measuring method of the measuring device of the present invention is as follows:

[0045] First, select the heel end of the special-shaped rail to be measured, and overlap and fix it on both sides of the rail head 11 through the two sets of support frames 201 of the left and right split combination. At the same time, the ferromagnetic body 202 is driven by the rotating shaft 2013 below to be adsorbed on the rail head lower jaw 112 at a suitable angle, and the adsorption angle of the ferromagnetic body 202 can be adjusted by the rotating shaft 2013. The ferromagnetic body 202 is embedded in the supporting plate 214. In this scheme, the rail head lower jaw 112 is used as the reference; then, according to the width of the rail head 11 and the position of the rail top flash 12, the second locking piece 24, the third locking piece 205 and the fourth locking piece 25 are loosened to ensure that the support frames 201 of the left and right split combination can cooperate smoothly. At the same time, the sliding seats 204 on both sides are moved to the two sides of the middle forged rail top flash 12 respectively. When the tip of the sliding measuring ruler 4 is above the rail top interface and the upper limit slots with scales on both sides (the vernier fixed ruler 3 shows the minimum accuracy) are opened, the second locking piece 24, the third locking piece 205 and the fourth locking piece 25 are opened. When the second locking piece 24, the third locking piece 205 and the fourth locking piece 25 correspond to each other, the left and right split combined support frames 201 and the horizontal sliding seat 204 can be firmly overlapped and fixed on the rail head 11; at this time, the first locking piece 21 is loosened, and the sliding measuring rulers 4 on the left and right sides are pressed down, so that the tips of the sliding measuring rulers 4 on the left and right sides contact the rail top interface and then the first locking piece 21 is tightened. In this process, the upper limit slot and the lower guide slot can ensure the smooth and accurate vertical descent of the sliding measuring ruler 4 during the descent process, thereby improving the detection accuracy. At this point, the measurement operation of the misalignment modulus of the heel end of the special-shaped rail is completed. Subsequently, the misalignment modulus size is judged according to the difference in measurement data of the corresponding scales of the sliding measuring rulers 4 on the left and right sides on the vernier fixed ruler 3, thereby realizing accurate and fast measurement of the misalignment modulus of the heel end of the special-shaped rail.

[0046] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A device for measuring the heel-end misalignment modulus of a special-shaped rail, characterized in that: include: A clamping head (2) for detachably clamping and fixing on a rail head (11), two vernier fixed rulers (3) extending vertically and fixed on the clamping head (2), and two sliding measuring rulers (4) arranged vertically and fixed on the clamping head (2) in a vertically adjustable manner; Two sliding measuring rulers (4) are arranged in coordination with two vernier fixed rulers (3), and the two sliding measuring rulers (4) are used to be arranged on both sides of a rail top burr (12) fixed at the top end of a rail head (11); Two sliding measuring rulers (4) are used to slide vertically during measurement so that their bottom ends respectively abut against two rail top interfaces where vertical edges on both sides of the rail top burr (12) intersect with the rail top surface (111) of the rail head (11), and then the vertical misalignment modulus of the two rail top interfaces can be obtained by reading the readings on the two sliding measuring rulers (4) respectively aligned with the indications of the two vernier fixed rulers (3).

2. The device for measuring the heel-end misalignment modulus of profiled rail according to claim 1, characterized in that: The chuck (2) is provided with two vertical guide grooves which are arranged at intervals in the horizontal direction and extend vertically through the chuck (2), and the two sliding measuring rulers (4) are respectively slidably mounted in the two vertical guide grooves; The chuck (2) comprises two groups of first locking members (21), which are respectively connected to the chuck (2), and the ends of the two groups of first locking members (21) are inserted into the corresponding vertical guide grooves after passing through the chuck (2) to tighten the corresponding sliding measuring ruler (4), thereby fixing the sliding measuring ruler (4) in the corresponding vertical guide groove.

3. The device for measuring the heel-end misalignment modulus of profiled rail according to claim 2, characterized in that: A clamping head (2) on one side of each vertical guide groove is marked with scale lines extending vertically to form a vernier fixed ruler (3); The bottom edge of each sliding measuring ruler (4) is inclinedly cut to form an inclined surface intersecting with the outer edge thereof away from the rail top burr (12), thereby forming a tip for abutting against the corresponding side rail top interface between the inclined surface and the inner side surface of the sliding measuring ruler (4).

4. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 2, characterized in that: The clamping head (2) further comprises a left clamping head (22) and a right clamping head (23) which are arranged opposite to each other, and the left clamping head (22) and the right clamping head (23) are used to be fixed to the two sides of the rail head (11) by being sucked and fixed on the two sides of the rail head (11); Two vernier fixed rulers (3) are respectively arranged on the left clamping head (22) and the right clamping head (23), and two sliding measuring rulers (4) are also respectively arranged on the left clamping head (22) and the right clamping head (23).

5. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 4, characterized in that: The left clamp (22) and the right clamp (23) both include a support frame (201) and a ferromagnetic body (202) fixed to the inner side of the support frame (201); The support frame (201) is used to be clamped onto the rail head (11) from one side of the rail head (11) after being opened; The ferromagnetic body (202) is used to tightly absorb the rail head (11) so that the support frame (201) and the rail head (11) are fixed.

6. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 5, characterized in that: The support frame (201) comprises a horizontal plate (2011) arranged horizontally, a vertical plate (2012) connected to the horizontal plate (2011) and arranged vertically, and a supporting plate (2014) hinged to the bottom end of the vertical plate (2012) via a rotating shaft (2013); The supporting plate (2014) is used to rotate under the action of an external force, thereby causing the support frame (201) to open outwards so as to be clamped onto the rail head (11) from the outside of the rail head (11); The ferromagnetic body (202) is fixed on the inner side surface of the supporting plate (2014) to be used for sucking the rail head lower jaw (112) on the lower side of the rail head (11), thereby fixing the support frame (201) on the rail head (11).

7. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 5, characterized in that: The support frames (201) of the left clamp (22) and the right clamp (23) are also connected above the rail head (11) via a first concave-convex matching structure (203) to achieve connection and positioning of the left clamp (22) and the right clamp (23); The chuck (2) further comprises a second locking member (24) provided through the first concave-convex matching structure (203), so as to lock and fix the two sets of support frames (201) connected in a positioned manner through the second locking member (24).

8. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 6, characterized in that: The left clamp (22) and the right clamp (23) further comprise a sliding seat (204) slidably mounted on the transverse plate (2011), and a third locking member (205) for locking the sliding seat (204) to the corresponding transverse plate (2011); The sliding seat (204) is provided with an upper limit slot vertically penetrating therethrough, and the transverse plate (2011) is provided with a lower guide slot vertically penetrating therethrough. The upper limit slot and the lower guide slot are vertically connected to form a vertical guide slot, and a vernier fixed ruler (3) is arranged on the sliding seat (204).

9. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 8, characterized in that: The size of the upper limit slot matches the outer dimensions of the sliding measuring ruler (4); The front-to-back dimensions of the lower guide slot match the thickness dimension of the sliding measuring ruler (4), and the left-to-right width of the lower guide slot is greater than the width of the sliding measuring ruler (4).

10. The device for measuring the heel-end misalignment modulus of a special-shaped rail according to claim 8, characterized in that: A second concave-convex matching structure (206) is also provided between the two sliding seats (204) for positioning and connecting the two. The chuck (2) further comprises a fourth locking member (25) provided through the second concave-convex matching structure (206), so as to lock and fix the two sets of sliding seats (204) that are connected in a positioned manner through the fourth locking member (25).

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