Method for measuring and grinding adjustment of bearing surface of sleeper

Abstract

The application discloses a sleeper bearing surface measurement and polishing adjustment method, which comprises the following steps: firstly, creating a work item and inputting basic parameters; then, connecting a sleeper bearing surface measuring instrument with a host computer, collecting actual three-dimensional shape data of the sleeper bearing surface by the sleeper bearing surface measuring instrument, and sending the data to the host computer; the host computer calculates sleeper bearing surface design three-dimensional shape data according to the input basic parameters; finally, the host computer carries out difference calculation on the actual three-dimensional shape data of the sleeper bearing surface and the sleeper bearing surface design three-dimensional shape data, and obtains polishing adjustment data of the sleeper bearing surface. The application can quickly measure the sleeper bearing surface, automatically generate a polishing adjustment scheme, and make the polished sleeper bearing surface meet the requirements of rail bottom slope setting.

Description

Technical Field

[0001] This invention relates to the field of railway sleeper bearing surface construction technology, specifically a method for measuring, grinding, and adjusting railway sleeper bearing surfaces. Background Technology

[0002] With the rapid development of urban rail transit, the density and operational intensity of subway lines are constantly increasing, and varying degrees of track slope exceeding limits have occurred. Therefore, it is necessary to conduct a comprehensive investigation of the specific conditions of the track slope along the entire line and carry out targeted special maintenance and rectification work.

[0003] Currently, there is a rail base slope measuring instrument on the market, which is used in the construction of new lines, completion acceptance, and routine line maintenance. However, this equipment has certain drawbacks in the special maintenance and renovation of rail base slope, specifically: (1) the existing rail base slope measuring instrument needs to be close to the rail base for measurement and cannot directly measure the working surface of the sleeper; (2) the current rail base slope measuring instrument has insufficient digitalization level, the measured rail base slope data is single, and it cannot automatically generate a rail base slope grinding and adjustment plan based on curve elements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for measuring and grinding the bearing surface of a railway sleeper, which can quickly measure the bearing surface of the sleeper and automatically generate a grinding and adjustment plan so that the bearing surface of the sleeper after grinding and adjustment meets the requirements of the rail bottom slope setting.

[0005] The technical solution of this invention is as follows: A method for measuring and grinding the bearing surface of a railway sleeper, specifically including the following steps: (1) Creation of work projects and entry of basic parameters: First, create a new work project on the host computer, and then enter the horizontal curve parameters and vertical curve parameters of the line under the newly created work project; (2) Connect the sleeper bearing surface measuring instrument to the host, use the sleeper bearing surface measuring instrument to collect the measured three-dimensional morphological data of the sleeper bearing surface and send it to the host; (3) The host calculates the three-dimensional shape data of the sleeper bearing surface design based on the input horizontal curve parameters and vertical curve parameters of the line; (4) The host machine calculates the difference between the measured three-dimensional shape data of the sleeper bearing surface and the designed three-dimensional shape data of the sleeper bearing surface to obtain the grinding and adjustment data of the sleeper bearing surface.

[0006] The parameters of the horizontal curves of the line include the starting mileage and ending mileage of the line, the names of all intersections in all horizontal curve segments, the mileage of the ZH point among the horizontal curve intersections, the mileage of the HY point among the horizontal curve intersections, the mileage of the YH point among the horizontal curve intersections, the mileage of the HZ point among the horizontal curve intersections, the left and right deviations of the line, and the design superelevation value. The parameters of the vertical curve of the line include the starting mileage and starting elevation of the line, the ending mileage and ending elevation of the vertical curve, the mileage of the slope change point, the elevation of the slope change point, and the radius of the vertical curve for all vertical curve segments.

[0007] Under the newly created work item, other parameters are also entered, including sleeper spacing, default range of rail base slope, and center distance of rail top. The sleeper spacing is used to quickly switch mileage when measuring the bearing surface of continuous sleepers, reducing the workload of inputting mileage values ​​each time. The default range of rail base slope is the range of rail base slope values ​​allowed after grinding and adjustment. After the actual three-dimensional shape data of the sleeper bearing surface is collected, the consistency of other parameters with the actual situation of the current measurement position is checked, and the default range of rail base slope and center distance of rail top are modified according to the actual situation of the current measurement position.

[0008] The sleeper bearing surface measuring instrument includes a worktable, four support legs, and a dual-axis tilt sensor. The four support legs are of equal length, and their top ends are fixedly connected to the four corners of the worktable. The dual-axis tilt sensor is mounted on the worktable and is connected to the main unit via Bluetooth. When collecting measured three-dimensional morphological data of the sleeper bearing surface, the bottom ends of the four support legs support the sleeper bearing surface, and the dual-axis tilt sensor collects the measured lateral tilt angle value of the sleeper bearing surface. and measured longitudinal tilt angle value The data is then transmitted to the host computer, which performs calibration on the measured values. The calibration formula is shown in equation (1) below: (1); In equation (1), , These are the corrected measured lateral tilt angle and the measured longitudinal tilt angle, respectively. This represents the zero-bit correction in the x-direction. Represents the zero-bit correction in the y-direction; This represents the temperature drift correction value set by the dual-axis tilt sensor.

[0009] Before acquiring measured three-dimensional morphological data of the sleeper bearing surface, the aforementioned sleeper bearing surface measuring instrument performs a zero-calibration operation. First, the sleeper bearing surface measuring instrument is placed on a horizontal surface to acquire three-dimensional morphological data. Then, the acquired three-dimensional morphological data is used for the first zero-position calibration. Next, the sleeper bearing surface measuring instrument is rotated 180° while the positions of the four support legs remain unchanged, and three-dimensional morphological data is acquired again for the second zero-position calibration. The zero-position correction value in the x-direction is obtained based on the difference between the first and second zero-position calibrations. Zero-position correction in the y-direction .

[0010] The host computer calculates the three-dimensional shape data of the sleeper bearing surface design based on the input horizontal curve parameters and vertical curve parameters of the track, specifically including the following steps: S31. Calculate the superelevation value at the current measurement position of the horizontal curve segment. See equation (2): (2); In equation (2), The superelevation value represents the current measurement location; Represents extremely high design value; The mileage value represents the current measurement location; This represents the mileage of point ZH among the intersections of horizontal curves; This represents the mileage of the HZ point at the intersection of the horizontal curves; To soften the length of the curve, It equals the distance between the intersection points HY and ZH of the horizontal curves; S32. Calculate the design lateral tilt angle value at the current measurement location. , see the following formula (3) for details: (3); In equation (3), The angle between the base of the high rail and the horizontal plane; The angle between the base of the lower rail and the horizontal plane represents the angle between the rail and the horizontal plane. ; The superelevation value represents the current measurement location; Represents the center distance of the rail top; The vertical angle representing the ultra-high value projection; S33. Calculate the starting mileage of the i-th vertical curve segment where the current measurement location is located. , see the following formula (4) for details: (4); In equation (4), This represents the elevation of the slope change point of the i-th vertical curve segment. This represents the elevation of the slope change point of the (i-1)th vertical curve segment. The elevation of the slope change point of the (i+1)th vertical curve segment; The mileage representing the change-of-slope point of the i-th vertical curve segment. This represents the mileage of the slope change point of the (i-1)th vertical curve segment. The mileage of the slope change point of the (i+1)th vertical curve segment; This represents the slope of the first section of the i-th vertical curve segment. This represents the slope of the latter part of the i-th vertical curve segment. This represents the slope difference between the front and rear slope segments of the i-th vertical curve segment; The vertical curve radius represents the i-th vertical curve segment; S34. Calculate the design longitudinal tilt angle value at the current measurement position. , see the following formula (5) for details: (5); In equation (5), The elevation of the point where the slope changes in the first vertical curve segment. Represents the starting elevation of the route. The mileage representing the change-of-slope point of the first vertical curve segment. Represents the starting mileage of the route; The elevation of the point where the slope changes in the preceding vertical curve segment. The elevation of the point where the slope changes in the subsequent vertical curve segment. The mileage representing the change-of-slope point of the preceding vertical curve segment. The mileage of the change-of-slope point for the next vertical curve segment; This represents the elevation of the endpoint of the route. The elevation of the point where the slope changes on the last vertical curve segment. Represents the final mileage of the route. The mileage representing the change-of-slope point of the last vertical curve segment; This represents the slope of the first section of the i-th vertical curve segment. The mileage value represents the current measurement location. The mileage representing the change-of-slope point of the i-th vertical curve segment. The vertical curve radius represents the i-th vertical curve segment.

[0011] The host computer calculates the difference between the measured three-dimensional morphological data of the sleeper bearing surface and the designed three-dimensional morphological data of the sleeper bearing surface to obtain the grinding and adjustment data of the sleeper bearing surface, as shown in the following formula (6): (6); In equation (6), This represents the lateral tilt angle value that needs to be adjusted and polished. This represents the longitudinal tilt angle value that needs to be polished and adjusted; and Grinding and adjustment data for the bearing surfaces of the sleepers; when and If all conditions are within the default range for the rail bottom slope, then and All values ​​are zero; no polishing or adjustment is required.

[0012] Advantages of this invention: (1) The present invention achieves the purpose of measuring the rail bottom slope by measuring the sleeper bearing surface of the concrete structure. The sleeper bearing surface measuring instrument can be directly placed on the sleeper bearing surface for measurement. During the measurement, since the length of the support leg of the sleeper bearing surface measuring instrument is greater than the rail height, the worktable of the sleeper bearing surface measuring instrument is located directly above the rail. Therefore, it is not necessary to remove the rail before measurement. The measurement is fast and the three-dimensional shape data of the sleeper bearing surface are accurate.

[0013] (2) The present invention can automatically calculate the design three-dimensional shape data of the sleeper bearing surface at different measurement positions according to the different alignment of the line, thereby automatically generating grinding and adjustment data of the sleeper bearing surface, thus providing data support for subsequent grinding of the sleeper bearing surface. There is no need for manual calculation and statistics of grinding data at each measurement position, which greatly reduces labor. Moreover, the calculation results are accurate. The calculation results of each measurement position are stored in the host, which is convenient to quickly retrieve and adjust during grinding construction. Attached Figure Description

[0014] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] See Figure 1 A method for measuring and grinding the bearing surface of a railway sleeper, specifically including the following steps: (1) Creation of work projects and entry of basic parameters: First, create a new work project on the host computer, and then enter the horizontal curve parameters, vertical curve parameters and other parameters under the newly created work project; S11. The parameters for the horizontal curve of the line include the following parameters: a. Starting point mileage of the route : 100.467; b. Mileage of the destination of the route : 1117.344; c. The names of the intersection points in the horizontal curve segment: for example, JD1; d. Mileage of point ZH (the point where the straight segment of the horizontal curve intersects the first transition curve): for example, 463.559; e. Mileage of point HY (the point where the first transition curve intersects the circular curve in the horizontal curve segment): for example, 538.715; f. Mileage of point YH in the intersection of horizontal curves (the point where the circular curve intersects the second transition curve in the horizontal curve segment): for example, 600.676; g. Mileage of the HZ point (the point where the second transition curve intersects the straight line segment in the horizontal curve segment) in the intersection of horizontal curves: for example, 675.832; h. Line deviation: Left deviation / Right deviation; i. Design with ultra-high value 40mm; The line includes multiple horizontal curve segments, and each horizontal curve segment includes the parameters of ci mentioned above; S12. The vertical curve parameters of the line include the following parameters: a. Starting point mileage of the route : 100.467; b. Mileage of the destination of the route : 1117.344; c. Elevation of the starting point of the route 20.26; d. Elevation of the end point of the route 18.56; e. Mileage of the slope change point on the vertical curve segment For example, 218.35; f. Elevation of the slope change point on the vertical curve segment For example, 23.35; g. The radius of the vertical curve segment For example, 5000; The line includes multiple vertical curve segments, each of which includes the parameters mentioned above (e.g.). S13. Other parameters include the following: a. Sleeper spacing: 600mm; b. Default range of rail bottom slope: 1 / 35~1 / 45; c. Rail top center distance: 1508mm; When measuring the bearing surface of continuous sleepers, the sleeper spacing allows for quick switching of mileage, reducing the workload of inputting mileage values ​​each time. The default range of the rail base slope is the allowable range after grinding and adjustment. After collecting the measured three-dimensional morphology data of the sleeper bearing surface, the consistency of other parameters with the actual situation at the current measurement location is checked, and the default range of the rail base slope and the center distance of the rail top are modified according to the actual situation at the current measurement location. (2) Connect the sleeper bearing surface measuring instrument to the host, use the sleeper bearing surface measuring instrument to collect the measured three-dimensional morphological data of the sleeper bearing surface and send it to the host; S21. The sleeper bearing surface measuring instrument includes a worktable, four legs and a dual-axis tilt sensor. The four legs are of the same length and the tops of the four legs are fixedly connected to the four corners of the worktable. The dual-axis tilt sensor is set on the worktable and is connected to the host via Bluetooth. S22. Before collecting the measured three-dimensional morphological data of the sleeper bearing surface, the sleeper bearing surface measuring instrument performs a zero-calibration operation. First, the sleeper bearing surface measuring instrument is placed on a horizontal surface to collect three-dimensional morphological data. Then, the collected three-dimensional morphological data is used for the first zero-point calibration. Next, the sleeper bearing surface measuring instrument is rotated 180° while the positions of the four outriggers remain unchanged. The three-dimensional morphological data is collected again, and a second zero-point calibration is performed. The zero-point correction value in the x-direction is obtained based on the difference between the first and second zero-point calibrations. Zero-position correction in the y-direction ; S23. When collecting measured three-dimensional morphological data of the sleeper bearing surface, the bottom ends of the four support legs are supported on the sleeper bearing surface, and the dual-axis tilt sensor collects the measured lateral tilt angle value of the sleeper bearing surface. (Inclination angle value along the vertical direction of the track, in "") and measured longitudinal inclination angle value (Inclination angle along the track direction, in "″) The sleeper bearing surface measuring instrument reads three values ​​continuously. The difference between the three values ​​is within ±9″. The average value of the three values ​​is then sent to the host. If the difference between the three values ​​exceeds ±9″, the measurement is repeated. S24. The host computer performs calibration of the measured values. The calibration formula is shown in the following formula (1): (1); In equation (1), , These are the corrected measured lateral tilt angle and the measured longitudinal tilt angle, respectively. This represents the zero-bit correction in the x-direction. Represents the zero-bit correction in the y-direction; This represents the temperature drift correction value set by the dual-axis tilt sensor; all the above parameters are in "″. (3) The host calculates the three-dimensional shape data of the sleeper bearing surface design based on the input horizontal curve parameters and vertical curve parameters of the line; S31. Calculate the superelevation value at the current measurement position of the horizontal curve segment. See equation (2): (2); In equation (2), Superelevation value representing the current measurement location, superelevation value of the straight line segment. The value is zero, and the circular curve segment represents the design superelevation value. ; The mileage value represents the current measurement location; This represents the mileage of point ZH among the intersections of horizontal curves; This represents the mileage of the HZ point at the intersection of the horizontal curves; To soften the length of the curve, It equals the distance between the intersection points HY and ZH of the horizontal curves; S32. Calculate the design lateral tilt angle value at the current measurement location. , see the following formula (3) for details: (3); In equation (3), The angle between the base of the high rail and the horizontal plane; The angle between the base of the lower rail and the horizontal plane represents the angle between the rail and the horizontal plane. ; The superelevation value represents the current measurement location; Represents the center distance of the rail tops. ; The vertical angle represents the super-high value projection; when the line deviates to the right, the left rail is the high rail and the right rail is the low rail; when the line deviates to the left, the left rail is the low rail and the right rail is the high rail. S33. Calculate the starting mileage of the i-th vertical curve segment where the current measurement location is located. , see the following formula (4) for details: (4); In equation (4), This represents the elevation of the slope change point of the i-th vertical curve segment. This represents the elevation of the slope change point of the (i-1)th vertical curve segment. The elevation of the slope change point of the (i+1)th vertical curve segment; The mileage representing the change-of-slope point of the i-th vertical curve segment. This represents the mileage of the slope change point of the (i-1)th vertical curve segment. The mileage of the slope change point of the (i+1)th vertical curve segment; This represents the slope of the first section of the i-th vertical curve segment. This represents the slope of the latter part of the i-th vertical curve segment. This represents the slope difference between the front and rear slope segments of the i-th vertical curve segment; The vertical curve radius represents the i-th vertical curve segment; S34. Calculate the design longitudinal tilt angle value at the current measurement position. , see the following formula (5) for details: (5); In equation (5), The elevation of the point where the slope changes in the first vertical curve segment. Represents the starting elevation of the route. The mileage representing the change-of-slope point of the first vertical curve segment. Represents the starting mileage of the route; The elevation of the point where the slope changes in the preceding vertical curve segment. The elevation of the point where the slope changes in the subsequent vertical curve segment. The mileage representing the change-of-slope point of the preceding vertical curve segment. The mileage of the change-of-slope point for the next vertical curve segment; This represents the elevation of the endpoint of the route. The elevation of the point where the slope changes on the last vertical curve segment. Represents the final mileage of the route. The mileage representing the change-of-slope point of the last vertical curve segment; This represents the slope of the first section of the i-th vertical curve segment. The mileage value represents the current measurement location. The mileage representing the change-of-slope point of the i-th vertical curve segment. The vertical curve radius represents the i-th vertical curve segment; (4) The host machine calculates the difference between the measured three-dimensional shape data of the sleeper bearing surface and the designed three-dimensional shape data of the sleeper bearing surface to obtain the grinding and adjustment data of the sleeper bearing surface, as shown in the following formula (6): (6); In equation (6), This represents the lateral tilt angle value that needs to be adjusted and polished. This represents the longitudinal tilt angle value that needs to be polished and adjusted; and Grinding and adjustment data for the bearing surfaces of the sleepers; when and If all of them conform to the default range of rail bottom slope (1 / 35~1 / 45), then and All values ​​are zero; no polishing or adjustment is required.

[0017] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for measuring and grinding the bearing surface of a railway sleeper, characterized in that: Specifically, it includes the following steps: (1) Creation of work projects and entry of basic parameters: First, create a new work project on the host computer, and then enter the horizontal curve parameters and vertical curve parameters of the line under the newly created work project; (2) Connect the sleeper bearing surface measuring instrument to the host, use the sleeper bearing surface measuring instrument to collect the measured three-dimensional morphological data of the sleeper bearing surface and send it to the host; (3) The host computer calculates the three-dimensional shape data of the sleeper bearing surface design based on the input horizontal curve parameters and vertical curve parameters of the track. The specific steps include: S31. Calculate the superelevation value at the current measurement position of the horizontal curve segment. See equation (2): （2）； In equation (2), The superelevation value represents the current measurement location; Represents extremely high design value; The mileage value represents the current measurement location; This represents the mileage of point ZH among the intersections of horizontal curves; This represents the mileage of the HZ point at the intersection of the horizontal curves; To soften the length of the curve, It equals the distance between the intersection points HY and ZH of the horizontal curves; S32. Calculate the design lateral tilt angle value at the current measurement location. , see the following formula (3) for details: （3）； In equation (3), The angle between the base of the high rail and the horizontal plane; The angle between the base of the lower rail and the horizontal plane represents the angle between the rail and the horizontal plane. ; The superelevation value represents the current measurement location; Represents the center distance of the rail top; The vertical angle representing the ultra-high value projection; S33. Calculate the starting mileage of the i-th vertical curve segment where the current measurement location is located. , see the following formula (4) for details: （4）； In equation (4), This represents the elevation of the slope change point of the i-th vertical curve segment. This represents the elevation of the slope change point of the (i-1)th vertical curve segment. The elevation of the slope change point of the (i+1)th vertical curve segment; The mileage representing the change-of-slope point of the i-th vertical curve segment. This represents the mileage of the slope change point of the (i-1)th vertical curve segment. The mileage of the slope change point of the (i+1)th vertical curve segment; This represents the slope of the first section of the i-th vertical curve segment. This represents the slope of the latter part of the i-th vertical curve segment. This represents the slope difference between the front and rear slope segments of the i-th vertical curve segment; The vertical curve radius represents the i-th vertical curve segment; S34. Calculate the design longitudinal tilt angle value at the current measurement position. , see the following formula (5) for details: (5); In equation (5), The elevation of the point where the slope changes in the first vertical curve segment. Represents the starting elevation of the route. The mileage representing the change-of-slope point of the first vertical curve segment. Represents the starting mileage of the route; The elevation of the point where the slope changes in the preceding vertical curve segment. The elevation of the point where the slope changes in the subsequent vertical curve segment. The mileage representing the change-of-slope point of the preceding vertical curve segment. The mileage of the change-of-slope point for the next vertical curve segment; This represents the elevation of the endpoint of the route. The elevation of the point where the slope changes on the last vertical curve segment. Represents the final mileage of the route. The mileage representing the change-of-slope point of the last vertical curve segment; This represents the slope of the first section of the i-th vertical curve segment. The mileage value represents the current measurement location. The mileage representing the change-of-slope point of the i-th vertical curve segment. The vertical curve radius represents the i-th vertical curve segment; (4) The host machine calculates the difference between the measured three-dimensional shape data of the sleeper bearing surface and the designed three-dimensional shape data of the sleeper bearing surface to obtain the grinding and adjustment data of the sleeper bearing surface.

2. The method for measuring and grinding the bearing surface of a railway sleeper according to claim 1, characterized in that: The parameters of the horizontal curves of the line include the starting mileage and ending mileage of the line, the names of all intersections in all horizontal curve segments, the mileage of the ZH point among the horizontal curve intersections, the mileage of the HY point among the horizontal curve intersections, the mileage of the YH point among the horizontal curve intersections, the mileage of the HZ point among the horizontal curve intersections, the left and right deviations of the line, and the design superelevation value. The parameters of the vertical curve of the line include the starting mileage and starting elevation of the line, the ending mileage and ending elevation of the vertical curve, the mileage of the slope change point, the elevation of the slope change point, and the radius of the vertical curve for all vertical curve segments.

3. The method for measuring and grinding the bearing surface of a railway sleeper according to claim 1, characterized in that: Under the newly created work item, other parameters are also entered, including sleeper spacing, default range of rail base slope, and center distance of rail top. The sleeper spacing is used to quickly switch mileage when measuring the bearing surface of continuous sleepers, reducing the workload of inputting mileage values ​​each time. The default range of rail base slope is the range of rail base slope values ​​allowed after grinding and adjustment. After the actual three-dimensional shape data of the sleeper bearing surface is collected, the consistency of other parameters with the actual situation of the current measurement position is checked, and the default range of rail base slope and center distance of rail top are modified according to the actual situation of the current measurement position.

4. The method for measuring and grinding the bearing surface of a railway sleeper according to claim 3, characterized in that: The sleeper bearing surface measuring instrument includes a worktable, four support legs, and a dual-axis tilt sensor. The four support legs are of equal length, and their top ends are fixedly connected to the four corners of the worktable. The dual-axis tilt sensor is mounted on the worktable and is connected to the main unit via Bluetooth. When collecting measured three-dimensional morphological data of the sleeper bearing surface, the bottom ends of the four support legs support the sleeper bearing surface, and the dual-axis tilt sensor collects the measured lateral tilt angle value of the sleeper bearing surface. and measured longitudinal tilt angle value The data is then transmitted to the host computer, which performs calibration on the measured values. The calibration formula is shown in equation (1) below: （1）； In equation (1), , These are the corrected measured lateral tilt angle and the measured longitudinal tilt angle, respectively. Represents the zero-bit correction in the x-direction. Represents the zero-bit correction in the y-direction; This represents the temperature drift correction value set by the dual-axis tilt sensor.

5. The method for measuring and grinding the bearing surface of a railway sleeper according to claim 4, characterized in that: Before acquiring measured three-dimensional morphological data of the sleeper bearing surface, the aforementioned sleeper bearing surface measuring instrument performs a zero-calibration operation. First, the sleeper bearing surface measuring instrument is placed on a horizontal surface to acquire three-dimensional morphological data. Then, the acquired three-dimensional morphological data is used for the first zero-position calibration. Next, the sleeper bearing surface measuring instrument is rotated 180° while the positions of the four support legs remain unchanged, and three-dimensional morphological data is acquired again for the second zero-position calibration. The zero-position correction value in the x-direction is obtained based on the difference between the first and second zero-position calibrations. Zero-bit correction in the y-direction .

6. The method for measuring and grinding the bearing surface of a railway sleeper according to claim 5, characterized in that: The host computer calculates the difference between the measured three-dimensional morphological data of the sleeper bearing surface and the designed three-dimensional morphological data of the sleeper bearing surface to obtain the grinding and adjustment data of the sleeper bearing surface, as shown in the following formula (6): （6）； In equation (6), This represents the lateral tilt angle value that needs to be adjusted and polished. This represents the longitudinal tilt angle value that needs to be polished and adjusted; and Grinding and adjustment data for the bearing surfaces of the sleepers; when and If all conditions are within the default range for the rail bottom slope, then and All values ​​are zero; no polishing or adjustment is required.

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