A calibration device for railway platform clearance measuring instrument

Abstract

The present invention provides a railway platform clearance measuring instrument calibration device, comprising a base, a rail simulation component is provided at the top of the base, a clearance simulation component is provided at one end of the base away from the rail simulation component, the rail simulation component comprises a preset panel, a fixed simulated rail is fixed at the top of the preset panel, a movable simulated rail is movably connected to one side of the top of the preset panel, the clearance simulation component comprises a workbench and a reference seat, a lateral limit adjustment block is movably connected to the top surface of the workbench, and a vertical limit adjustment block is movably connected to one side surface of the reference seat. The present invention can simulate the measurement environment of the vertical dimension reproduction value of the clearance measuring instrument, the measurement of the lateral dimension reproduction value of the clearance, and the measurement of the clearance adjustment block size, so as to facilitate the calibration personnel to calibrate a variety of clearance measuring instruments.

Description

Technical Field

[0001] The invention mainly relates to the technical field of clearance measuring instrument calibration, and in particular to a railway platform clearance measuring instrument calibration device. Background Art

[0002] Railway limits are used to ensure the safe operation of subways. The figures that limit the cross-sectional dimensions of vehicles, the installation dimensions of equipment along the line, and determine the effective clearance dimensions of building structures are called platform limits. Therefore, in order to ensure the safe operation of railways, it is often necessary to measure the platform limits using a limit measuring instrument.

[0003] According to the patent document with application number CN201810272289.0, a station platform limit measurement device and a measurement method are provided. The product includes a car body, a measuring mechanism and a control module. The car body includes a frame, a fixed wheel group adjusting wheel mechanism and a walking drive mechanism. The measuring mechanism includes a box body, a laser ranging sensor and a laser driving module. The control module includes a walking control module, a laser control module and a handheld control terminal; the measurement method includes: step one, the elongation of the adjusting wheel assembly; step two, the station platform limit measurement device walks; step three, the station platform limit measurement; step four, repeating steps two and three until the entire platform limit measurement is completed; step five, the contraction of the adjusting wheel assembly. The present invention has reasonable design, simple operation and good use effect. It automatically measures the station platform limit, realizes non-contact measurement, has high measurement efficiency, saves manpower and material resources, is small in size, low in cost, and has strong practicality.

[0004] However, although the existing clearance measuring devices have the advantages of small size and saving manpower and material resources, there is currently a lack of a method for calibrating the clearance lateral dimensions, clearance vertical dimensions, track gauge and superelevation measurements of the clearance measuring device, which affects the user's judgment on the accuracy of the data measured by the measuring device. Summary of the invention

[0005] The present invention mainly provides a railway platform clearance measuring instrument calibration device to solve the technical problems raised in the above background technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A railway platform clearance measuring instrument calibration device comprises a base, a rail simulation component is provided at the top of the base, a clearance simulation component is provided at one end of the base away from the rail simulation component, the rail simulation component comprises a preset panel, an angle adjustment mechanism for supporting the preset panel on the top of the base is provided at the bottom of the preset panel, a pad mechanism is provided at one end of the bottom of the preset panel away from the angle adjustment mechanism, a fixed simulation rail is fixed to the top of the preset panel, a movable simulation rail is movably connected to the side of the top of the preset panel away from the fixed simulation rail, the movable simulation rail slides or deflects on the top surface of the base under the drive of the adjustment mechanism to adjust the distance between the movable simulation rail and the fixed simulation rail, the clearance simulation component comprises a workbench fixed to the top of the base and a reference seat fixed to the top surface of the workbench, the top of the workbench The surface is movably connected with a lateral limit adjustment block, and one side surface of the reference seat is movably connected with a vertical limit adjustment block. Movable mechanisms are provided between the lateral limit adjustment block and the workbench, as well as between the vertical limit adjustment block and the reference seat, so as to move the lateral limit adjustment block horizontally at the top of the workbench and move the vertical limit adjustment block along the plumb plane of the reference seat. The limit simulation component includes a workbench fixed to the top of the base and a reference seat fixed to the top surface of the workbench. The top surface of the workbench is movably connected with a lateral limit adjustment block, and one side surface of the reference seat is movably connected with a vertical limit adjustment block. Movable mechanisms are provided between the lateral limit adjustment block and the workbench, as well as between the vertical limit adjustment block and the reference seat, so as to move the lateral limit adjustment block horizontally at the top of the workbench and move the vertical limit adjustment block along the plumb plane of the reference seat.

[0008] Furthermore, the top surface of the workbench and the side surface of the reference seat close to the vertical limit adjustment block are both provided with limit adjustment tracks for accommodating the movable mechanism.

[0009] Furthermore, each of the movable mechanisms includes a movable support plate, each of the movable support plate is slidably connected to the corresponding limit adjustment track, each of the movable support plate shells is connected to a first screw rod via a nut, each of the movable support plates is slidably connected to a movable block on the side away from the corresponding limit adjustment track, each of the movable block shells is connected to a second screw rod via a nut, and one end of the two movable blocks away from the corresponding movable support plate is respectively fixed to the lateral limit adjustment block and the vertical limit adjustment block shells.

[0010] Furthermore, each of the first screw rods passes through the corresponding boundary adjustment track and extends to the outside to be connected to the first rotating hand wheel.

[0011] Furthermore, a reducer is connected to the outer circumference of one end of each second screw rod, each reducer is fixed on the corresponding limit adjustment track housing, and a second rotating handwheel is connected to the outer circumference of each reducer output shaft.

[0012] Furthermore, the pad block mechanism includes a support platform, the support platform is fixed to the top surface of the base, and an ultra-high pad block is arranged between the support platform and the preset panel.

[0013] Furthermore, the angle adjustment mechanism includes two telescopic rods and a cylinder fixed between the base and the preset panel, and two ends of the cylinder are hinged to the preset panel and the base shell respectively.

[0014] Furthermore, the adjusting mechanism includes a pressure plate, a third screw is connected to the pressure plate shell through a nut, a motor is fixed to the top surface of the pressure plate, the motor output shaft is connected to a worm, both ends of the worm are connected to the top surface of the preset panel through a bearing seat, one side of the worm is meshed with a turbine, the top end of the turbine is rotatably connected to a sliding support block through a rotating shaft, and the sliding support block is fixed to the bottom end of the movable simulated rail.

[0015] Furthermore, when measuring the reproduced value of the limit lateral dimension, the top end of the fixed simulated rail is abutted against a straightedge, the top surface of the straightedge is abutted against a coincidence level, the bottom of the end of the straightedge away from the fixed simulated rail is abutted against a cylinder, and the bottom end of the cylinder is fixed to the top surface of the base.

[0016] Furthermore, when measuring the reappearance value of the limit vertical dimension, a suspension wire is fixed on one side of the vertical limit adjustment block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention can simulate the measurement environment of the vertical dimension reproduction value of the limit measuring instrument, the horizontal dimension reproduction value of the limit and the size of the limit adjustment block, so as to facilitate the calibration personnel to calibrate various limit measuring instruments and reduce errors.

[0019] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the activity mechanism of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the angle adjustment mechanism of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the cushion block mechanism of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the suspension wire of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the flat ruler of the present invention;

[0026] Figure 7 This is a display diagram of the movable simulation rail and the adjustment mechanism of the present invention;

[0027] In the figure: 1. base; 2. rail simulation component; 21. angle adjustment mechanism; 211. telescopic rod; 212. oil cylinder; 22. preset panel; 23. fixed simulated rail; 24. movable simulated rail; 25. adjustment mechanism; 251. sliding support block; 252. third screw rod; 253. motor; 254. worm; 255. turbine; 26. spacer mechanism; 261. support platform; 262. super-high spacer; 3. limit simulation component ; 31. Workbench; 311. Level ruler; 312. Level gauge; 313. Cylinder; 32. Movable mechanism; 321. Movable support plate; 322. First screw rod; 323. Movable block; 324. Second screw rod; 325. Speed ​​reducer; 326. Second rotating hand wheel; 327. First rotating hand wheel; 33. Boundary adjustment track; 34. Horizontal boundary adjustment block; 35. Reference seat; 36. Vertical boundary adjustment block; 361. Suspension wire. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] Please refer to the attached Figure 1-7 A railway platform clearance measuring instrument calibration device comprises a base 1, a rail simulation component 2 is arranged at the top of the base 1, a clearance simulation component 3 is arranged at one end of the base 1 away from the rail simulation component 2, the rail simulation component 2 comprises a preset panel 22, an angle adjustment mechanism 21 for supporting the preset panel 22 at the top of the base 1 is arranged at the bottom of the preset panel 22, a pad mechanism 26 is arranged at one end of the bottom of the preset panel 22 away from the angle adjustment mechanism 21, a fixed simulated rail 23 is fixed at the top of the preset panel 22, and the preset panel 22 is provided with a fixed simulated rail 23. A movable simulation rail 24 is movably connected to the side of the top of the panel 22 away from the fixed simulation rail 23, and an adjustment mechanism 25 is provided between the movable simulation rail 24 and the fixed simulation rail 23. The movable simulation rail 24 slides or deflects on the top surface of the base 1 under the drive of the adjustment mechanism 25. The limit simulation component 3 includes a workbench 31 fixed to the top of the base 1 and a reference seat 35 fixed to the top surface of the workbench 31. The top surface of the workbench 31 is movably connected to a lateral limit adjustment block 34. The reference seat 35 A vertical limit adjustment block 36 is movably connected to the surface of one side of the base 1, and a movable mechanism 32 is provided between the lateral limit adjustment block 34 and the workbench 31 and between the vertical limit adjustment block 36 and the reference seat 35, so as to horizontally move the lateral limit adjustment block 34 at the top of the workbench 31 and slide the vertical limit adjustment block 36 along the plumb plane of the reference seat 35 on the top surface of the base 1 driven by the adjustment mechanism 25 to adjust the distance between the movable simulation rail 24 and the fixed simulation rail 23. The limit simulation component 3 includes a movable mechanism 32 fixed to the base 1. The base 1 comprises a workbench 31 at the top end and a reference base 35 fixed to the top end surface of the workbench 31. The top end surface of the workbench 31 is movably connected with a lateral limit adjustment block 34. The side surface of the reference base 35 is movably connected with a vertical limit adjustment block 36. A movable mechanism 32 is provided between the lateral limit adjustment block 34 and the workbench 31 and between the vertical limit adjustment block 36 and the reference base 35 to move the lateral limit adjustment block 34 horizontally at the top end of the workbench 31 and to move the vertical limit adjustment block 36 along the plumb plane of the reference base 35.

[0032] Please refer again to the attached Figure 1 and 2The top surface of the workbench 31 and the side surface of the reference seat 35 close to the vertical limit adjustment block 36 are both provided with a limit adjustment track 33 for accommodating the movable mechanism 32, so that the workbench 31 and the reference seat 35 provide sufficient installation positions for accommodating the movable mechanism 32 through the limit adjustment track 33 thereon, and guide the movable support plate 321 in the movable mechanism 32 to move along a straight line, each of the movable mechanisms 32 includes a movable support plate 321, each of the movable support plates 321 is slidably connected to the corresponding limit adjustment track 33, each of the movable support plates 321 is connected to a first screw rod 322 on the shell through a nut, and each of the movable support plates 321 is away from the corresponding limit adjustment track One side of the limit adjustment track 33 is slidably connected with a movable block 323, and each of the movable blocks 323 shells is connected to a second screw rod 324 through a nut. The ends of the two movable blocks 323 away from the corresponding movable support plates 321 are respectively fixed to the shells of the lateral limit adjustment block 34 and the vertical limit adjustment block 36, so that when the first screw rod 322 rotates, since the first screw rod 322 is connected to the movable support plate 321 through the nut, the movable support plate 321 converts the rotational motion of the first screw rod 322 into its own linear motion through the nut. Similarly, the movable block 323 slidably connected to the top of the movable support plate 321 also translates through the second screw rod 324 passed through it.

[0033] Please refer again to the attached Figure 1 and 2 Each of the first screw rods 322 extends through the corresponding limit adjustment track 33 to the outside and is connected to the first rotating hand wheel 327, so that the user can manually rotate the second screw rod 324 through the first rotating hand wheel 327 on the second screw rod 324, and the outer circumference of one end of each of the second screw rods 324 is connected to a reducer 325, and each of the reducers 325 is fixed on the corresponding shell of the limit adjustment track 33, and the outer circumference of the output shaft of each reducer 325 is connected to a second rotating hand wheel 326, so that the second rotating hand wheel 326 can control the second screw rod 324 to rotate through the reducer 325. Since the input shaft and the output shaft of the reducer 325 are perpendicular to each other, the second rotating hand wheel 326 can be parallel to the first rotating hand wheel 327, which is convenient for the user to use.

[0034] Please refer again to the attached Figure 1 , 3and 4, the pad mechanism 26 includes a support platform 261, the support platform 261 is fixed to the top surface of the base 1, and an ultra-high pad 262 is provided between the support platform 261 and the preset panel 22, so that when the preset panel 22 is rotated driven by the angle adjustment mechanism 21, the preset panel 22 is separated from the ultra-high pad 262 between it and the support platform 261 fixed on the top of the base 1, and the user can replace the ultra-high pad 262.

[0035] Please refer again to the attached Figure 1 and 4 The angle adjustment mechanism 21 includes two telescopic rods 211 and a cylinder 212 fixed between the base 1 and the preset panel 22. The two ends of the cylinder 212 are respectively hinged to the preset panel 22 and the base 1 shell, so that one end of the piston rod of the cylinder 212 is used to extend and retract, so that the preset panel 22 rotates at the hinge point between it and the top of the telescopic rod 211, which is convenient for the user to take out the super-high pad 262 at the bottom end of the preset panel 22, and the telescopic rod 211 can be set as a cylinder, so as to facilitate the adjustment of the height of the preset panel 22.

[0036] Please refer again to the attached Figure 1 , 3 and 7, the adjusting mechanism 25 includes a pressure plate 256, a third screw 252 is connected to the housing of the pressure plate 256 through a screw nut, a motor 253 is fixed to the top surface of the pressure plate 256, the output shaft of the motor 253 is connected to a worm 254, both ends of the worm 254 are connected to the top surface of the preset panel 22 through a bearing seat, one side of the worm 254 is meshed with a turbine 255, the top of the turbine 255 is rotatably connected to a sliding support block 251 through a rotating shaft, and the sliding support block 251 is fixed to the bottom end of the active simulation rail 24, so that the active simulation The pressure plate 256 at the bottom end of the simulated rail 24 is able to convert the rotational motion of the third screw rod 252 into its own linear motion through the movement of the nut thereon on the rotating third screw rod 252. Since the movable simulated rail 24 is located at the top of the pressure plate 256, the distance between the movable simulated rail 24 and the fixed simulated rail 23 is adjusted. When the output shaft of the motor 253 drives the worm 254 connected thereto to rotate, the worm 254 is meshed with the turbine 255 at the bottom end of the sliding support block 251, thereby transmitting the torque to the turbine 255 at the bottom end of the sliding support block 251 and driving the sliding support block 251 to rotate.

[0037] Please refer again to the attached Figure 1 , 56. When measuring the reappearance value of the limit transverse dimension, the top of the fixed simulated rail 23 is abutted against a ruler 311, the top surface of the ruler 311 is abutted against a coincidence level 312, the bottom of the end of the ruler 311 away from the fixed simulated rail 23 is abutted against a cylinder 313, the bottom end of the cylinder 313 is fixed to the top surface of the base 1, so that the calibration device is in a working state of superelevation of 0 through the superelevation pad 262, and then one end of the ruler 311 is placed on the top surface of the fixed simulated rail 23, and the other end is placed on the cylinder 313. The ruler 311 is adjusted to a level with the help of the coincidence level 312, and then the height H1 between the top surface of the ruler 311 and the plumb plane of the reference seat 35 is measured with a standard steel tape measure, and the height H between the two working surfaces of the ruler 311 is measured with a vernier caliper. The sum of H1, H and the vertical working dimensions of the vertical limit adjustment block 36 or the transverse limit adjustment block 34 is the limit vertical dimension.

[0038] Please refer again to the attached Figure 1 and 5 When measuring the reappearance value of the limit vertical dimension, a hanging wire 361 is fixed on one side of the vertical limit adjustment block 36. First, the calibration device is placed in a working state with a superelevation of 0 through the superelevation pad 262. Then, any vertical limit adjustment block 36 is correctly placed on the vertical positioning surface of the reference seat 35 and is close to the plumb surface of the reference seat 35. The hanging wire 361 on the vertical limit adjustment block 36 is used to drop the plumb line along the working surface of the vertical limit adjustment block 36. Then, a standard steel tape measure is used to measure the distance from the right edge of the fixed simulated rail 23 to the left side of the hanging wire 361. The limit transverse dimension is calculated according to formula A.1.

[0039] Li=L+(L2+Lg-Lh) / 2 A.1

[0040] Where:

[0041] Li——Reproduction value of the transverse dimension of the limit of the special gauge, mm;

[0042] L —— the distance from the right edge of the simulated rail at the fixed end to the left side of the suspension wire, mm;

[0043] L2——actual value of track gauge at 1470 mm, mm;

[0044] Lh——actual value of the movable end gauge pad, mm.

[0045] 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, mm.

[0046] The specific operation mode of the present invention is as follows:

[0047] When the limit measuring instrument is calibrated, first, the movable simulated rail 24 uses the bottom pressure plate 256 thereof to move on the rotating third screw 252 through the nut, so as to convert the rotary motion of the third screw 252 into its own linear motion. Since the movable simulated rail 24 is located at the top of the pressure plate 256, the distance between the movable simulated rail 24 and the fixed simulated rail 23 is adjusted. When the output shaft of the motor 253 drives the worm 254 connected thereto to rotate, the worm 254 is meshed with the turbine 255 at the bottom end of the sliding support block 251, so as to transmit the torque to the turbine 255 at the bottom end of the sliding support block 251 and drive the sliding support block 251 to rotate, so as to adjust the deflection degree of the movable simulated rail 24.

[0048] When calibrating the measurement of the recurring value of the limit vertical dimension of the limit measuring instrument, the calibration device puts itself in a working state of superelevation of 0 through the superelevation pad 262, and then puts one end of the ruler 311 on the top surface of the fixed simulated rail 23, and the other end on the cylinder 313. The ruler 311 is adjusted to the level with the help of the coincident level 312, and then the height H1 between the top surface of the ruler 311 and the plumb plane of the reference seat 35 is measured with a standard steel tape measure, and the height H between the two working surfaces of the ruler 311 is measured with a vernier caliper. The sum of H1, H and the vertical working dimensions of the vertical limit adjustment block 36 or the lateral limit adjustment block 34 is the limit vertical dimension;

[0049] When calibrating the measurement of the recurring value of the limit transverse dimension of the limit measuring instrument, after the calibration device is placed in a working state with the superelevation of 0 by the superelevation pad 262, any vertical limit adjustment block 36 is correctly placed on the vertical positioning surface of the reference seat 35 and is close to the plumb surface of the reference seat 35. The hanging line 361 on the vertical limit adjustment block 36 is used to drop the plumb line along the working surface of the vertical limit adjustment block 36. Then, the distance from the right edge of the fixed simulated rail 23 to the left side of the hanging line 361 is measured with a standard steel tape measure. The limit transverse dimension is calculated according to formula A.1;

[0050] When calibrating the measurement of the size of the simulated limit adjustment block of the limit measuring instrument, first adjust the fixed simulated rail 23 and the movable simulated rail 24 to the level through the angle adjustment mechanism 21 in conjunction with the level, and then use a vernier caliper to measure the distance Ly from the superelevation measuring edge of the special block gauge of the fixed simulated rail 23 to the side working surface of the fixed simulated rail 23, and the distance Lr from the outer edge of the movable simulated rail 24 to the side working surface of the movable simulated rail 24, and use formula A.2 to calculate the distance Lc of the measuring point;

[0051] A.2

[0052] Where:

[0053] Lc——distance between measuring points, mm;

[0054] Ly——The distance from the superelevation measuring edge of the special block gauge for the fixed end simulated rail to the working surface of the fixed end simulated rail side, mm;

[0055] Lr is the distance from the outer edge of the simulated rail at the movable end to the working surface of the simulated rail at the movable end, mm;

[0056] Place two dedicated auxiliary platforms near the fixed simulated steel rail 23 and the movable simulated steel rail 24, respectively, and stabilize them, and use the combined image level 312 to level them respectively. ) mm is clamped on the fixed simulated rail 23 and the movable simulated rail 24, and the distance from the highest point of the special block gauge to the top surface of the special auxiliary platform at the same end is measured using a gauge block and a micrometer to obtain H 11 and H 21 ;

[0057] The movable simulated rail 24 is lifted by the angle adjustment mechanism 21, and the superelevation pad 262 is inserted. The distance from the highest point of the special block gauge to the top surface of the special auxiliary platform at the same end is measured again by the gauge block and the micrometer, and the measurement result H is obtained. 11 and H 21 , according to formula A.3, we can get the height difference Hs between the active end and the fixed end of the measuring point, so the superelevation recurrence value of the calibration platform at this point is calculated according to formula A.4;

[0058] A.3

[0059] Where:

[0060] Hs——actual height difference between the two ends, mm;

[0061] H22——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 not zero, mm;

[0062] 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, mm;

[0063] 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, mm;

[0064] 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, mm;

[0065] Replace the extra-high spacer and repeat the above process.

[0066] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A railway platform clearance measuring instrument calibration device, comprising a base (1), Features A rail simulation component (2) is provided at the top of the base (1), and a limit simulation component (3) is provided at one end of the base (1) away from the rail simulation component (2); The rail simulation component (2) comprises a preset panel (22); an angle adjustment mechanism (21) for supporting the preset panel (22) on the top of the base (1) is provided at the bottom of the preset panel (22); a cushion mechanism (26) is provided at one end of the bottom of the preset panel (22) away from the angle adjustment mechanism (21); a fixed simulated rail (23) is fixed to the top of the preset panel (22); a movable simulated rail (24) is movably connected to the side of the top of the preset panel (22) away from the fixed simulated rail (23); an adjustment mechanism (25) is provided between the movable simulated rail (24) and the fixed simulated rail (23); and the movable simulated rail (24) slides or deflects on the top surface of the base (1) under the drive of the adjustment mechanism (25); The limit simulation component (3) comprises a workbench (31) fixed to the top of the base (1) and a reference seat (35) fixed to the top surface of the workbench (31); the top surface of the workbench (31) is movably connected to a lateral limit adjustment block (34); a side surface of the reference seat (35) is movably connected to a vertical limit adjustment block (36); a movable mechanism (32) is provided between the lateral limit adjustment block (34) and the workbench (31) and between the vertical limit adjustment block (36) and the reference seat (35) to move the lateral limit adjustment block (34) horizontally at the top of the workbench (31) and to move the vertical limit adjustment block (36) along the plumb plane of the reference seat (35); The top surface of the workbench (31) and the side surface of the reference seat (35) close to the vertical limit adjustment block (36) are both provided with a limit adjustment track (33) for accommodating the movable mechanism (32); Each of the movable mechanisms (32) comprises a movable support plate (321), each of the movable support plates (321) is slidably connected to the corresponding limit adjustment track (33), a first screw rod (322) is connected to the shell of each of the movable support plates (321) via a nut, a movable block (323) is slidably connected to the side of each of the movable support plates (321) away from the corresponding limit adjustment track (33), a second screw rod (324) is connected to the shell of each of the movable blocks (323) via a nut, and ends of the two movable blocks (323) away from the corresponding movable support plates (321) are respectively fixed to the shells of the lateral limit adjustment block (34) and the vertical limit adjustment block (36); The adjusting mechanism (25) comprises a pressure plate (256), a third screw (252) is connected to the shell of the pressure plate (256) via a screw nut, a motor (253) is fixed to the top surface of the pressure plate (256), an output shaft of the motor (253) is connected to a worm (254), both ends of the worm (254) are connected to the top surface of the preset panel (22) via a bearing seat, one side of the worm (254) is meshingly connected to a turbine (255), the top end of the turbine (255) is rotatably connected to a sliding support block (251) via a rotating shaft, and the sliding support block (251) is fixed to the bottom end of the movable simulated rail (24); When measuring the reappearance value of the limit transverse dimension, the top end of the fixed simulated steel rail (23) is abutted against a level ruler (311), the top surface of the level ruler (311) is abutted against a coincidence level (312), the bottom of one end of the level ruler (311) away from the fixed simulated steel rail (23) is abutted against a cylinder (313), and the bottom end of the cylinder (313) is fixed to the top surface of the base (1).

2. A railway platform clearance measuring instrument calibration device according to claim 1, It is characterized in that Each of the first screw rods (322) passes through a corresponding limit adjustment track (33) and extends to the outside to be connected to a first rotating hand wheel (327).

3. A railway platform clearance measuring instrument calibration device according to claim 2, It is characterized in that The outer circumference of one end of each second screw rod (324) is connected to a reducer (325), each reducer (325) is fixed on a housing corresponding to the limit adjustment track (33), and the outer circumference of the output shaft of each reducer (325) is connected to a second rotating hand wheel (326).

4. A railway platform clearance measuring instrument calibration device according to claim 1, It is characterized in that The cushion block mechanism (26) comprises a support platform (261), the support platform (261) is fixed to the top surface of the base (1), and an ultra-high cushion block (262) is provided between the support platform (261) and the preset panel (22).

5. A railway platform clearance measuring instrument calibration device according to claim 1, It is characterized in that The angle adjustment mechanism (21) comprises two telescopic rods (211) fixed between the base (1) and the preset panel (22) and an oil cylinder (212), wherein two ends of the oil cylinder (212) are respectively hinged to the preset panel (22) and the base (1) shell.

6. A railway platform clearance measuring instrument calibration device according to claim 1, It is characterized in that When measuring the reappearance value of the limit vertical dimension, a suspension wire (361) is fixed to one side of the vertical limit adjustment block (36).

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