Verification and calibration rack for platform gauge measuring instrument and use method of verification and calibration rack

Abstract

The invention discloses a verification and calibration rack for a platform gauge measuring instrument. The verification and calibration rack comprises a reference seat, a gauge transverse size working face moving module and a gauge vertical size working face moving module, wherein the gauge transverse size working face moving module and the gauge vertical size working face moving module are arranged on one side of the reference seat. A fixed end simulation steel rail and a movable end simulation steel rail are arranged on the other side of the reference seat; a transverse lead screw is arranged on the limit transverse dimension working surface and can move transversely; the limit vertical size working surface moving module is provided with a longitudinal screw rod and a simulation limit adjusting block and can move longitudinally; the upper surface of the simulation limit adjusting block is a limit vertical dimension working surface, and the side surface is a limit transverse dimension working surface; the height of the movable end simulation steel rail is adjustable and the distance between the movable end simulation steel rail and the fixed end simulation steel rail is variable; and electronic rulers are arranged on the limit transverse size working surface moving module and the limit vertical size working surface moving module. The device can simulate the relationship between the platform and the rail, and calibrate and verify the platform limit measuring instrument, so that related instruments can accurately indicate, and the occurrence of measurement errors is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of railway equipment, and in particular relates to a verification and calibration bench for a platform clearance measuring instrument and a use method thereof. Background Art

[0002] my country is a railway power, and the total mileage of high-speed railways in the country ranks first in the world. The high-speed railway construction standards formulated by my country have become the guidance for the construction of the new generation of high-speed railways. Every link in railway construction must be accurate and there must be no deviation beyond the standard. In the construction of railway platforms, the following parameters are mainly considered. The first is to look at the vertical dimension of the limit, that is, the vertical distance from the point on the edge of the top surface of the platform to the track surface; the second is to look at the horizontal dimension of the limit, that is, the distance from the point on the side elevation of the platform to the median perpendicular of the track surface; the third is to look at the vertical dimension of the limit and the horizontal dimension of the limit when the rail is designed to be superelevated. The superelevation of the rail means that in order to facilitate the turning of the train, the guide rail on one side must be set at an angle. In this case, the vertical dimension of the limit and the horizontal dimension of the limit are detected; finally, the gauge of the rail must be measured.

[0003] The measurement of the above data requires the use of a platform limit measuring instrument. For example, the Chinese utility model with application number CN202122675575.1 and the name "A platform construction limit laser measuring instrument" is used to detect the above data. At present, the verification of the measurement accuracy of the digital platform limit measuring instrument mainly relies on the hanging measurement, folding platform limit ruler measurement, and comparison of the results of the digital platform limit measuring instrument conducted at the station site. However, there are certain subjective judgment errors in the hanging measurement and folding limit ruler measurement, resulting in relatively poor accuracy and stability of the measurement results. Therefore, the development of a high-precision calibration device that can be specifically used for digital platform limit measuring instruments has become a key issue that needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that there is no equipment in the prior art that can calibrate and verify the digital platform clearance measuring instrument, and to propose a platform clearance measuring instrument calibration stand and a method of using the same. The device of the present invention can simulate the distance and relationship between the platform and the rail, and through precise adjustment, the digital platform clearance measuring instrument is calibrated and verified with the adjusted data, so that the relevant instruments can accurately indicate, which is beneficial to railway construction and avoids errors during construction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A calibration bench for platform limit measuring instrument comprises a reference seat and a limit transverse dimension working surface moving module and a limit vertical dimension working surface moving module arranged on one side of the reference seat; a fixed end simulation rail and a movable end simulation rail are arranged on the other side of the reference seat; the limit transverse dimension working surface moving module comprises a transverse screw rod, a transverse hand wheel and a moving base; the transverse screw rod is arranged on the reference seat, and a screw rod nut assembly matching the transverse screw rod is arranged in the moving base; the transverse hand wheel is connected to the transverse screw rod; the limit vertical dimension working surface The movable module comprises a longitudinal screw and a longitudinal handwheel; the longitudinal screw is arranged on a movable base; a movable simulation limit adjustment block is matched on the screw; the upper surface of the simulation limit adjustment block is a limit vertical dimension working surface, and the side surface is a limit transverse dimension working surface; the fixed end simulation rail is fixed, and the movable end simulation rail is height-adjustable; the distance between the movable end simulation rail and the fixed end simulation rail is variable; the limit transverse dimension working surface movable module and the limit vertical dimension working surface movable module are both provided with a ruler and an electronic ruler.

[0007] The limit transverse dimension working surface moving module and the limit vertical dimension working surface moving module are respectively used to measure and verify the limit transverse dimension and the limit vertical dimension, and play the role of simulating the platform height; the fixed end simulated rail and the movable end simulated rail play the role of simulating rails, and can adjust the gauge and superelevation to simulate tracks in different conditions; after the transverse screw is rotated, the entire limit vertical dimension working surface moving module can be driven to move transversely, thereby driving the simulated limit adjustment block to move transversely; after the longitudinal screw is rotated, the simulated limit adjustment block can be driven to move longitudinally; the limit vertical dimension working surface is used to simulate the top of the platform; the limit transverse dimension working surface simulates the side of the platform; after the movable end simulated rail is adjusted in height, it forms a superelevation with the fixed end simulated rail; adjusting the distance between the movable end simulated rail and the fixed end simulated rail can simulate different gauges; the electronic ruler is used to detect the distance; the working principle of the electronic ruler can be inductive, and the device belongs to the prior art and will not be described here.

[0008] As a further technical improvement, the movable end simulated rail side is provided with a detachable gauge pad; the movable end simulated rail bottom is provided with a detachable superelevation pad; the gauge pad and superelevation pad both include at least two specifications and sizes. The gauge pad and superelevation pad are used to change the gauge and superelevation respectively.

[0009] As a further technical improvement, a mounting seat is provided on the fixed-end simulated rail.

[0010] As a further technical improvement, a level bubble device is provided on the reference seat.

[0011] As a further technical improvement, a level adjustment pad is provided at the bottom of the reference seat, and the level adjustment pad cooperates with a level bubble device to adjust the level.

[0012] As a further technical improvement, the bottom of the fixed end simulated rail and the movable end simulated rail are both provided with a connecting seat; the limited transverse dimension working surface moving module also includes a guide column; the guide column is parallel to the transverse screw rod. The connecting seat at the bottom of the fixed end simulated rail and the corresponding mounting seat are hinged with a pin, so that when the height of the movable end simulated rail is adjusted, the entire simulated rail assembly consisting of the fixed end simulated rail and the movable end simulated rail can rotate to simulate the state of the real rail.

[0013] Method of using the above-mentioned platform clearance measuring instrument verification and calibration bench:

[0014] Check the use environment: Place the device on a level surface, use the operating temperature between 10℃ and 30℃, and the humidity not more than 80%RH. Observe the levelness through the leveling bubble device and adjust the level through the leveling pads.

[0015] Calibration of limit vertical dimension measurement: no superelevation pad is placed at the bottom of the movable end simulated rail, so that the movable end simulated rail is aligned with the fixed end simulated rail, which is called 0 superelevation at this time; shake the longitudinal handwheel, and adjust the height of the simulated limit adjustment block through the longitudinal screw rod, so that the limit vertical dimension working surface is aligned with the upper surface of the fixed end simulated rail; reset the electronic ruler on the limit vertical dimension working surface moving module to zero; shake the longitudinal handwheel to adjust it to the vertical dimension position to be measured; measure the vertical dimension and record the measurement results of the electronic ruler; put the platform limit measuring instrument that needs to be calibrated on this device, and detect it according to the method of detecting the vertical height of the railway platform. If the detected height data is consistent with the electronic ruler data on the limit vertical dimension working surface moving module, it means that the platform limit measuring instrument is accurate. If not, adjust the platform limit measuring instrument to be consistent with the electronic ruler data on the limit vertical dimension working surface moving module;

[0016] Limit transverse dimension measurement and calibration: The transverse dimension working surface moving module is the electronic ruler zeroing to ensure the initial state; shake the transverse hand wheel, and adjust the horizontal position of the simulated limit adjustment block through the transverse screw rod, so that the limit transverse dimension working surface and the inner rail surface of the fixed end simulated rail with 0 superelevation are at the standard required position, and the electronic ruler is zeroed after reaching the standard position; according to the requirements, this position should be 1300mm from the limit transverse dimension working surface to the middle line of the fixed end simulated rail and the movable end simulated rail; according to the distance to be measured, use the formula "limit transverse dimension working surface to the center line of the two rails = electronic ruler display value + 1300" to adjust the limit transverse dimension working surface; after adjusting to the required measurement distance, measure and record the results; put it into the platform limit measuring instrument for calibration with this data;

[0017] Gauge measurement and calibration: Select the appropriate gauge block according to the gauge setting value to be measured; after installing the selected block, ensure that it is firmly and correctly positioned. After completing the installation of the block, perform the corresponding gauge measurement test; record the results of each test to ensure that the measurement is accurate; finally, calibrate the platform clearance measuring instrument with this clear gauge;

[0018] Superelevation measurement calibration: select the appropriate superelevation block according to the superelevation setting value to be measured; after installing the selected superelevation block, ensure that it is firm and correctly positioned; perform the corresponding superelevation measurement test; record the results of each test to ensure that the measurement is accurate; finally, calibrate the platform limit measuring instrument with this clear track gauge.

[0019] It is also necessary to test and calculate the vertical dimension reproduction value of the limit, the horizontal dimension reproduction value of the limit, and the superelevation reproduction value, and to test the simulated limit adjustment block.

[0020] The range of the recurrence value of the limit vertical dimension covers (150~1350)mm, including the upper and lower limits and at least 8 points of 300mm, 500mm, 700mm, 900mm, 1100mm and 1250mm. The actual value (U<0.25mm) shall be used. Figure 3 .

[0021] Detection method and operation steps:

[0022] ① Adjust the calibration bench to the working state where the super height is 0.

[0023] ② Place one end of the ruler on the fixed end to simulate the top surface of the rail, and the other end on the support device with adjustable height.

[0024] ③ Use a level to adjust the ruler to a horizontal state.

[0025] ④ Use a steel tape measure to measure the height H1 from the top surface of the flat ruler to the vertical dimension working surface of the simulated limit adjustment block.

[0026] ⑤ Use a vernier caliper to measure the height H between the two working surfaces of the ruler.

[0027] ⑥ Calculate the vertical dimension of the limit: The sum of H1, H and the vertical working dimensions of the corresponding simulated limit adjustment block is the measured value.

[0028] ⑦ According to this method, measure the upper limit, lower limit, and vertical dimensions of at least 8 points such as 300mm, 500mm, 700mm, 900mm, 1100mm, 1250mm, etc.

[0029] ⑧Record the results of each measuring point to ensure measurement accuracy.

[0030] The range of the reproducible value of the limit transverse dimension covers (1300~2000)mm, including the upper and lower limits and at least 5 points of 1750mm, and is used according to the actual value (U<0.30mm). Figure 4 .

[0031] Li=L+(L2+Lg-Lh) / 2

[0032] Where:

[0033] Li-----Reproduction of the horizontal dimension of the verification bench limit;

[0034] L---------The distance from the right edge of the simulated rail at the fixed end to the left side of the suspension wire;

[0035] L2-------1 470mm point gauge actual value;

[0036] Lg---------actual value of the fixed end gauge block. If only the gauge block is added at the movable end during use, the value is 0;

[0037] Lh--------actual value of the movable end gauge pad.

[0038] Measurement method and operation steps:

[0039] ① Adjust the calibration bench to the working state where the super height is 0.

[0040] ② Adjust the limit lateral dimension working surface moving module and fix the simulation limit adjustment block at a certain position.

[0041] ③ Use a hanging line to drop the plumb line vertically along the right working surface of the simulated limit adjustment block.

[0042] ④ Use a standard steel tape measure to measure the distance from the right edge of the fixed end simulated rail to the left side of the suspension wire.

[0043] ⑤ Based on the measurement results, calculate the limit lateral dimension according to formula (6.1).

[0044] ⑥ Measure according to this method and ensure that the reproducible value range covers 1300mm to 2000mm, including the upper limit, lower limit and at least 5 points of 1750mm.

[0045] Record the results of each measurement point to ensure measurement accuracy.

[0046] The lateral and vertical working dimensions of the simulated limit adjustment block shall be used according to the actual values ​​(U≤0.01mm).

[0047] Measuring method: The horizontal and vertical working dimensions of the simulated limit adjustment block are measured using a length measuring machine to give the actual values.

[0048] Solution: If the requirements are not met, reinstall and debug until they meet the requirements.

[0049] When measuring the super-high reappearance value, the dimensions should include 30mm, 60mm, and 90mm super-high reappearance points, and use the super-high actual value (U≤0.25mm); the parallelism of the upper and lower working surfaces of the height block should not exceed 0.02mm. Figure 5 .

[0050] Measurement method and operation steps:

[0051] ① Adjust the two simulated rails to a horizontal state.

[0052] ②Use a vernier caliper to measure the following two distances:

[0053] The distance (Lx) from the superelevation measuring edge of the special block gauge for the fixed-end simulated rail to the side working surface of the fixed-end simulated rail;

[0054] The distance from the outer edge of the active end simulated rail to the working surface of the active end simulated rail (Ly).

[0055] Calculate the distance Lc of the measurement point.

[0056] LC=L2+Lr-Ly

[0057] Where:

[0058] Lc------Distance between measuring points;

[0059] Lr-------The distance from the outer edge of the simulated rail at the active end to the working surface of the simulated rail at the active end;

[0060] Ly-------The distance from the superelevation measuring edge of the special block gauge for the fixed-end simulated rail to the working surface on the side of the fixed-end simulated rail.

[0061] ③ Place two special auxiliary platforms near the two simulated rails and secure them firmly.

[0062] ④ Use the combined level to level the two auxiliary platforms separately.

[0063] ⑤Place the special block gauge Ⅰ and special block gauge Ⅱ (|h1-h2|≤0.1mm) Figure 5 The diagram in the figure is securely clamped on the simulated rail.

[0064] ⑥ Use a gauge block and a micrometer to measure the distance from the highest point of the special block gauge to the top surface of the special auxiliary platform at the same end, and record the measured values ​​H11 and H21.

[0065] ⑦ Use the lifting mechanism to lift the simulated rail at the movable end and insert the super-high pad.

[0066] ⑧ Use the gauge block and micrometer again to measure the distance from the highest point of the special block gauge to the top surface of the special auxiliary platform at the same end, and obtain the measurement results H12 and H22.

[0067] ⑨Calculate the height difference Hs between the movable end and the fixed end of the measuring point.

[0068] ⑩ Based on the measurement results, calculate the ultra-high recurrence value of the point on the calibration bench.

[0069] Hs=H22-H21-H12+H11

[0070] Where:

[0071] Hs-------actual height difference between the two ends;

[0072] H22-----The distance from the highest point of the special block gauge on the simulated rail at the active end to the top surface of the special auxiliary platform at the same end when the superelevation is not zero;

[0073] H21-----The distance from the highest point of the special block gauge on the simulated rail at the movable end to the top surface of the special auxiliary platform at the same end when the superelevation is zero;

[0074] H12-----The distance from the highest point of the special block gauge on the simulated rail at the fixed end to the top surface of the special auxiliary platform at the same end when the superelevation is not zero;

[0075] H11-----The distance from the highest point of the special block gauge on the simulated rail at the fixed end to the top surface of the special auxiliary platform at the same end when the superelevation is zero.

[0076] Hx=1505×Hs / Lc

[0077] Where:

[0078] Hx----The highest reproducible value of the test bench at this calibration point.

[0079] Metrological performance requirements: The sizes should include 15mm, 25mm, 35mm, 45mm, and 60mm, and should be used according to the actual value of the track gauge (U<0.15mm); the parallelism of the two working surfaces of the gauge block should not be greater than 0.02mm.

[0080] Measurement method: Use a vernier caliper to measure the size of the gauge block. The difference between the distance between the two simulated rail side working surfaces and the corresponding gauge block size is the gauge reproduction value.

[0081] Parallelism is measured using a flat plate and a dial indicator.

[0082] Solution: If the requirements are not met, reinstall and debug until they meet the requirements.

[0083] When measuring the track gauge reproduction value, the dimensions should include 15mm, 25mm, 35mm, 45mm, and 60mm, and be used according to the actual value of the track gauge (U<0.15mm); the parallelism of the two working surfaces of the gauge block should not be greater than 0.02mm.

[0084] Measurement method: Use a vernier caliper to measure the size of the gauge block. The difference between the distance between the two simulated rail side working surfaces and the corresponding gauge block size is the gauge reproduction value.

[0085] Parallelism is measured using a flat plate and a dial indicator.

[0086] Solution: If the requirements are not met, reinstall and debug until they meet the requirements.

[0087] The track gauge between the fixed-end simulated rail and the movable-end simulated rail is 1470mm; when performing track gauge measurement and calibration, it is necessary to add 15mm track gauge blocks according to actual detection requirements, so that the track gauge becomes 1455mm; add 35mm track gauge blocks to make the track gauge become 1435mm; add 35mm and 10mm track gauge blocks to make the track gauge become 1425mm; add 35mm, 15mm and 10mm track gauge blocks to make the track gauge become 1410mm.

[0088] If superelevation blocks are not used during superelevation measurement calibration, the simulated rail at the movable end is aligned with the simulated rail at the fixed end, which is at position 0. When performing superelevation measurement calibration, it is necessary to increase and replace superelevation blocks of 30mm, 60mm, 100mm and their combination according to actual detection needs. If measuring superelevation values ​​of -30mm, -60mm, -90mm, and -100mm, adjust the platform limit measuring instrument to the opposite direction for testing.

[0089] The technical solution of the present invention has the following beneficial effects:

[0090] 1. The present invention can simulate the state between the platform and the rails through the mobile module for the horizontal dimension limit working surface, the mobile module for the vertical dimension limit working surface, the fixed end simulated rail and the movable end simulated rail, so that the platform limit measuring instrument to be adjusted can be calibrated, making the platform limit measuring instrument more accurate and avoiding deviations during railway platform construction.

[0091] 2. The present invention can simulate and adjust the distance and superelevation between rails through the fixed-end simulated rails and the movable-end simulated rails, and simulate the actual railway track conditions, so that the calibration stand is more in line with the actual conditions and can better calibrate and adjust the platform limit measuring instrument.

[0092] 3. The present invention reproduces various detection and adjustment data, thereby re-testing the accuracy of the verification and calibration bench, so that the accuracy of the device itself is guaranteed, thereby ensuring that when the platform limit measuring instrument is verified and calibrated using the device as a reference, the verification and calibration can be more accurate and without deviation.

[0093] 4. The present invention has a simple structure, is practical and convenient, and can well verify and calibrate the platform clearance measuring instrument, which is conducive to the smooth and high-standard construction of railways. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0095] Figure 2 It is a side view of the inventive device.

[0096] Figure 3 This is a schematic diagram of the limit vertical dimension reproduction test.

[0097] Figure 4 Schematic diagram of the reproduction of the limited lateral dimension.

[0098] Figure 5 This is a schematic diagram of the ultra-high recurrence value determination.

[0099] Figure markings: 1-reference seat, 2-moving module for limit transverse dimension working surface, 3-connecting seat, 4-moving module for limit vertical dimension working surface, 5-simulated limit adjustment block, 6-fixed end simulated rail, 7-movable end simulated rail, 8-mounting seat, 9-gauge pad, 10-superelevation pad, 11-guide column, 12-level bubble device, 13-level adjustment foot pad, 14-flat ruler, 15-image level, 16-adjustable height support device, 17-hanging line, 18-plumb line, 19-special block gauge I, 20-special block gauge II, 21-special auxiliary platform I, 22-special auxiliary platform II; 201-transverse screw rod, 202-transverse hand wheel, 203-movable base, 401-longitudinal screw rod, 402-longitudinal hand wheel, 501-limit vertical dimension working surface, 502-limit transverse dimension working surface. DETAILED DESCRIPTION

[0100] The present invention will be further described below in conjunction with the accompanying drawings.

[0101] Embodiment 1:

[0102] like Figures 1 to 4As shown, a calibration bench for platform limit measuring instrument comprises a reference seat 1 and a limit transverse dimension working surface moving module 2 and a limit vertical dimension working surface moving module 4 arranged on one side of the reference seat 1; a fixed end simulation rail 6 and a movable end simulation rail 7 are arranged on the other side of the reference seat 1; the limit transverse dimension working surface moving module 2 comprises a transverse screw rod 201, a transverse hand wheel 202 and a moving base 203; the transverse screw rod 201 is arranged on the reference seat 1, and a screw rod nut assembly matching the transverse screw rod 201 is arranged in the moving base 203; the transverse hand wheel 202 is connected to the transverse screw rod 201; the limit vertical dimension The working surface moving module 4 includes a longitudinal screw rod 401 and a longitudinal hand wheel 402; the longitudinal screw rod 401 is arranged on the moving base 203; a movable simulation limit adjustment block 5 is matched on the screw rod 401; the upper surface of the simulation limit adjustment block 5 is the limit vertical dimension working surface 501, and the side surface is the limit horizontal dimension working surface 502; the fixed end simulation rail 6 is fixed, and the movable end simulation rail 7 is height-adjustable; the distance between the movable end simulation rail 7 and the fixed end simulation rail 6 is variable; the limit horizontal dimension working surface moving module 2 and the limit vertical dimension working surface moving module 4 are both provided with rulers and electronic rulers.

[0103] The movable end simulated rail 7 has a detachable side with a gauge block 9; the movable end simulated rail 7 has a detachable bottom with an extra-high block 10; the gauge block 9 and the extra-high block 10 both include at least two specifications and sizes.

[0104] A mounting seat 8 is provided on the fixed end simulated rail 6 .

[0105] The reference base 1 is provided with a level bubble device 12 .

[0106] The method of use of the present invention is as follows:

[0107] Check the use environment: Place the device on a level surface. The operating temperature and humidity of the use environment should not exceed 80% RH. Observe the levelness through the leveling bubble device and adjust the levelness through the leveling foot pads.

[0108] Calibration of limit vertical dimension measurement: no superelevation pad is placed at the bottom of the movable end simulated rail, so that the movable end simulated rail is aligned with the fixed end simulated rail, which is called 0 superelevation at this time; shake the longitudinal handwheel, and adjust the height of the simulated limit adjustment block through the longitudinal screw rod, so that the limit vertical dimension working surface is aligned with the upper surface of the fixed end simulated rail; reset the electronic ruler on the limit vertical dimension working surface moving module to zero; shake the longitudinal handwheel to adjust it to the vertical dimension position to be measured; measure the vertical dimension and record the measurement results of the electronic ruler; put the platform limit measuring instrument that needs to be calibrated on this device, and detect it according to the method of detecting the vertical height of the railway platform. If the detected height data is consistent with the electronic ruler data on the limit vertical dimension working surface moving module, it means that the platform limit measuring instrument is accurate. If not, adjust the platform limit measuring instrument to be consistent with the electronic ruler data on the limit vertical dimension working surface moving module;

[0109] Limit transverse dimension measurement and calibration: The transverse dimension working surface moving module is the electronic ruler zeroing to ensure the initial state; shake the transverse hand wheel, and adjust the horizontal position of the simulated limit adjustment block through the transverse screw rod, so that the limit transverse dimension working surface and the inner rail surface of the fixed end simulated rail with 0 superelevation are at the standard required position, and the electronic ruler is zeroed after reaching the standard position; according to the requirements, this position should be 1300mm from the limit transverse dimension working surface to the middle line of the fixed end simulated rail and the movable end simulated rail; according to the distance to be measured, use the formula "limit transverse dimension working surface to the center line of the two rails = electronic ruler display value + 1300" to adjust the limit transverse dimension working surface; after adjusting to the required measurement distance, measure and record the results; put it into the platform limit measuring instrument for calibration with this data;

[0110] Gauge measurement and calibration: Select the appropriate gauge block according to the gauge setting value to be measured; after installing the selected block, ensure that it is firmly and correctly positioned. After completing the installation of the block, perform the corresponding gauge measurement test; record the results of each test to ensure that the measurement is accurate; finally, calibrate the platform clearance measuring instrument with this clear gauge;

[0111] Superelevation measurement calibration: select the appropriate superelevation block according to the superelevation setting value to be measured; after installing the selected superelevation block, ensure that it is firm and correctly positioned; perform the corresponding superelevation measurement test; record the results of each test to ensure that the measurement is accurate; finally, calibrate the platform limit measuring instrument with this clear track gauge.

[0112] It is also necessary to test and calculate the vertical dimension reproduction value of the limit, the horizontal dimension reproduction value of the limit, and the superelevation reproduction value, and to test the simulated limit adjustment block.

[0113] The track gauge between the fixed-end simulated rail and the movable-end simulated rail is 1470mm; when performing track gauge measurement and calibration, it is necessary to add 15mm track gauge blocks according to actual detection requirements, so that the track gauge becomes 1455mm; add 35mm track gauge blocks to make the track gauge become 1435mm; add 35mm and 10mm track gauge blocks to make the track gauge become 1425mm; add 35mm, 15mm and 10mm track gauge blocks to make the track gauge become 1410mm.

[0114] If superelevation blocks are not used during superelevation measurement calibration, the simulated rail at the movable end is aligned with the simulated rail at the fixed end, which is at position 0. When performing superelevation measurement calibration, it is necessary to increase and replace superelevation blocks of 30mm, 60mm, 100mm and their combination according to actual detection needs. If measuring superelevation values ​​of -30mm, -60mm, -90mm, and -100mm, adjust the platform limit measuring instrument to the opposite direction for testing.

[0115] Embodiment 2:

[0116] The difference between this embodiment and the first embodiment is that a level adjustment foot pad 13 is provided at the bottom of the reference base 1 .

[0117] The method of use of this embodiment is the same as that of the first embodiment.

[0118] Embodiment three:

[0119] The difference between this embodiment and the second embodiment is that: the bottom of the fixed end simulated rail 6 and the movable end simulated rail 7 are both provided with a connecting seat 3; the limited transverse dimension working surface moving module 2 also includes a guide column 11; the guide column 11 is parallel to the transverse screw rod 201.

[0120] The method of use of this embodiment is the same as that of the first embodiment.

[0121] Embodiment 4:

[0122] The difference between this embodiment and the third embodiment is that: the bottom of the reference seat 1 is provided with a level adjustment foot pad 13. The bottom of the fixed end simulation rail 6 and the movable end simulation rail 7 are both provided with a connecting seat 3; the limited horizontal dimension working surface moving module 2 also includes a guide column 11; the guide column 11 is parallel to the horizontal screw rod 201. The level is observed through the level bubble device 12, and the level is adjusted through the level adjustment foot pad 13.

[0123] The method of use of this embodiment is the same as that of the first embodiment.

[0124] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

[0125] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0126] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A platform clearance measuring instrument verification and calibration bench, characterized in that: It comprises a reference seat (1) and a limit transverse dimension working surface moving module (2) and a limit vertical dimension working surface moving module (4) arranged on one side of the reference seat (1); a fixed end simulation rail (6) and a movable end simulation rail (7) are arranged on the other side of the reference seat (1); The limited transverse dimension working surface moving module (2) comprises a transverse screw rod (201), a transverse hand wheel (202) and a moving base (203); the transverse screw rod (201) is arranged on the reference seat (1), and a screw rod nut assembly matching the transverse screw rod (201) is arranged in the moving base (203); the transverse hand wheel (202) is connected to the transverse screw rod (201); The limit vertical dimension working surface moving module (4) comprises a longitudinal screw rod (401) and a longitudinal hand wheel (402); the longitudinal screw rod (401) is arranged on a movable base (203); a movable simulated limit adjustment block (5) is matched and arranged on the screw rod (401); the upper surface of the simulated limit adjustment block (5) is the limit vertical dimension working surface (501), and the side surface is the limit transverse dimension working surface (502); The fixed end simulated steel rail (6) is fixed, and the movable end simulated steel rail (7) is height-adjustable; the distance between the movable end simulated steel rail (7) and the fixed end simulated steel rail (6) is variable; The movable module (2) for limiting the transverse dimension working surface and the movable module (4) for limiting the vertical dimension working surface are both provided with a ruler and an electronic ruler.

2. The platform clearance measuring instrument verification and calibration stand according to claim 1 is characterized in that: The movable end simulated rail (7) is provided with a detachable track gauge pad (9) on the side; the movable end simulated rail (7) is provided with a detachable superelevation pad (10) on the bottom; the track gauge pad (9) and the superelevation pad (10) both include at least two specifications and sizes.

3. The platform clearance measuring instrument verification and calibration stand according to claim 1 is characterized in that: A mounting seat (8) is provided on the fixed-end simulated steel rail (6).

4. The platform clearance measuring instrument verification and calibration stand according to claim 1 is characterized in that: The reference seat (1) is provided with a level bubble device (12).

5. The platform clearance measuring instrument verification and calibration stand according to claim 1, characterized in that: A level adjustment foot pad (13) is provided at the bottom of the reference seat (1).

6. The platform clearance measuring instrument verification and calibration stand according to claim 1, characterized in that: The fixed end simulated steel rail (6) and the movable end simulated steel rail (7) are both provided with a connecting seat (3) at the bottom; the limited transverse dimension working surface moving module (2) also includes a guide column (11); the guide column (11) is parallel to the transverse screw rod (201).

7. The method for using the platform clearance measuring instrument verification and calibration stand according to any one of claims 1 to 6, characterized in that: The following steps are involved: 1) Check the use environment: Place the device on a level surface, with the working temperature of the use environment being between 10°C and 30°C and the humidity being no greater than 80%RH. Observe the levelness through the leveling bubble device (12) and adjust the level through the leveling foot pad (13). 2) Limit vertical dimension measurement calibration: no superelevation pad (10) is placed at the bottom of the movable end simulated rail (7), so that the movable end simulated rail (7) is aligned with the fixed end simulated rail (6), which is called zero superelevation; the longitudinal hand wheel (402) is shaken, and the height of the simulated limit adjustment block (5) is adjusted through the longitudinal screw rod (401), so that the limit vertical dimension working surface (501) is aligned with the upper surface of the fixed end simulated rail (6); the electronic ruler on the limit vertical dimension working surface moving module (4) is reset to zero; the longitudinal hand wheel (402) is shaken, and the height of the simulated limit adjustment block (5) is adjusted through the longitudinal screw rod (401), so that the limit vertical dimension working surface (501) is aligned with the upper surface of the fixed end simulated rail (6) The hand wheel (402) is turned to adjust to the position of the vertical dimension to be measured; the vertical dimension is measured and the measurement result of the electronic ruler is recorded; the platform limit measuring instrument to be calibrated is placed on the device and tested according to the method of testing the vertical height of the railway platform. If the tested height data is consistent with the electronic ruler data on the limit vertical dimension working surface moving module (4), it means that the platform limit measuring instrument is calibrated. If not, the platform limit measuring instrument is adjusted to be consistent with the electronic ruler data on the limit vertical dimension working surface moving module (4); 3) Limit transverse dimension measurement calibration: the transverse dimension working surface moving module (2) is to reset the electronic ruler to zero to ensure the initial state; the transverse hand wheel (202) is shaken, and the horizontal position of the simulated limit adjustment block (5) is adjusted through the transverse screw rod (201) so that the limit transverse dimension working surface (502) and the inner rail surface of the fixed end simulated rail (6) with zero superelevation are at the position required by the standard. After reaching the standard position, the electronic ruler is reset to zero; according to the requirements, the position should be 1300mm from the limit transverse dimension working surface (502) to the middle line of the fixed end simulated rail (6) and the movable end simulated rail (7); according to the distance to be measured, the limit transverse dimension working surface is adjusted using the formula "the distance from the limit transverse dimension working surface (502) to the center line of the two rails = the electronic ruler display value + 1300"; after adjusting to the required distance, the measurement is carried out and the result is recorded; the platform limit measuring instrument is put into the platform limit measuring instrument for calibration with this data; 4) Track gauge measurement and calibration: according to the track gauge setting value to be measured, select the appropriate track gauge block (9); after installing the selected block, ensure that it is firmly and correctly positioned; after completing the installation of the block, perform the corresponding track gauge measurement test; record the results of each test to ensure that the measurement is accurate; finally, calibrate the platform clearance measuring instrument with this clear track gauge; 5) Superelevation measurement calibration: Select the appropriate superelevation pad (10) according to the superelevation setting value to be measured; after installing the selected superelevation pad (10), ensure that it is firm and correctly positioned; perform the corresponding superelevation measurement test; record the results of each test to ensure that the measurement is accurate; finally, calibrate the platform limit measuring instrument with this clear track gauge.

8. The method for using the platform clearance measuring instrument verification and calibration stand according to claim 7 is characterized in that: It is also necessary to test and calculate the vertical dimension reproduction value of the limit, the horizontal dimension reproduction value of the limit, and the superelevation reproduction value, and to test the simulated limit adjustment block.

9. The method for using the platform clearance measuring instrument verification and calibration stand according to claim 7, characterized in that: The track gauge between the fixed end simulated steel rail (6) and the movable end simulated steel rail (7) is 1470 mm; when performing track gauge measurement and calibration, according to actual detection requirements, 15 mm track gauge pads (9) are added respectively, so that the track gauge becomes 1455 mm; 35 mm track gauge pads (9) are added, so that the track gauge becomes 1435 mm; 35 mm and 10 mm track gauge pads (9) are added, so that the track gauge becomes 1425 mm; 35 mm, 15 mm and 10 mm track gauge pads (9) are added, so that the track gauge becomes 1410 mm.

10. The method for using the platform clearance measuring instrument verification and calibration stand according to claim 7, characterized in that: When the superelevation measurement calibration is performed without using the superelevation pad (10), the movable end simulated rail (7) is aligned with the fixed end simulated rail (6), which is at position 0; when performing superelevation measurement calibration, it is necessary to increase and replace superelevation pads (10) of 30 mm, 60 mm, 100 mm, and combinations thereof according to actual testing requirements; if measuring superelevation values ​​of -30 mm, -60 mm, -90 mm, and -100 mm, adjust the platform limit measuring instrument to the opposite direction for testing.

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