Comprehensive verification platform for calibrating multiple types of railway measuring instruments

Abstract

The utility model provides a comprehensive verification platform for calibrating various types of railway measuring instruments, which comprises a contact net measuring instrument rack, a rail detector verification platform, a platform limit measuring instrument rack and a plurality of strut side limit measuring racks, and the rail detector verification table, the platform limit measuring instrument rack and the plurality of strut side limit measuring racks are arranged on the same fixed base plane. According to the utility model, the tower-shaped simulation platform can be pushed backwards in a translation manner, so that the tower-shaped simulation platform leaves the middle position for blocking a measurement laser beam, a detected measurement instrument is prevented from being blocked and interfered, and when verification measurement of the platform limit measurement instrument is needed, the tower-shaped simulation platform is moved back to the middle position in a translation manner. Therefore, the effects that different railway track measuring instruments do not influence each other during verification and measurement on the comprehensive verification platform, and the comprehensive verification performance is improved are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instrument calibration, in particular to a comprehensive verification platform for calibrating multiple types of railway measuring instruments. Background Art

[0002] In the development of engineering technology in my country's railway industry, various railway-specific measuring instruments for testing railway tracks and track-related facilities have emerged in engineering construction and daily maintenance. Under the unified management of the national metrology department and the railway industry metrology department, various measuring instruments in the railway industry are managed by metrology, and a series of industry metrology standards and regulations have been issued to strictly trace the value of various general and special measuring instruments and inspect and approve them under the value transfer system.

[0003] Therefore, railway standard metrology institutes have been established in the railway industry systems of various places to manage, inspect and verify various railway measuring instruments in their jurisdictions. The utility model is based on the standards such as "TB3147-2020 Railway Track Inspection Instrument", "JJG (Railway) 210-2020 Contact Network Geometry Parameters Measuring Instrument Calibration Bench", "TB / T3227-2020 Contact Network Geometry Parameters Measuring Instrument", "JJF (CR) 042-2021 Platform Limit Measuring Instrument Calibration Specification", "JJG1091-2020 Track Inspection Instrument Calibration Bench Calibration Procedure", etc., and corresponding specifications have been issued for the calibration and calibration reference instruments used in the metrological calibration of various types of railway special measuring instruments; however, in the prior art, when calibrating railway track inspection instruments, in order to avoid mutual influence between measuring instruments during calibration measurement, calibration instruments are usually set up separately, or a few are combined, resulting in poor comprehensive calibration. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a comprehensive calibration platform that can perform metrological inspection on the functions of relevant railway measuring instruments respectively, reduce the cost of occupying site, increase calibration efficiency, and calibrate multiple categories of railway measuring instruments with high comprehensive calibration performance.

[0005] The utility model provides the following technical solutions: a comprehensive calibration platform for calibrating multiple types of railway measuring instruments, including a contact network measuring instrument stand, a track gauge calibration platform, a platform clearance measuring instrument stand, and a plurality of pillar side clearance measuring stands, wherein the track gauge calibration platform, the platform clearance measuring instrument stand, and a plurality of pillar side clearance measuring stands are arranged on the same fixed base surface, and the track gauge calibration platform, the platform clearance measuring instrument stand, and a plurality of pillar side clearance measuring stands are arranged in sequence from right to left on the same central axis, and the contact network measuring instrument stand is located directly above the track gauge calibration platform;

[0006] The platform limit measuring instrument stand comprises a base arranged on the fixed base surface, a tower-shaped simulation platform slidably connected to the base, and a plurality of detection blocks arranged in a stepped manner on the tower-shaped simulation platform.

[0007] Furthermore, the comprehensive verification platform also includes an operating steel platform, and the operating steel platform is used to install and debug the contact network measuring instrument stand.

[0008] Furthermore, a plurality of guide rails are provided on the base, and the base is slidably connected to the tower-shaped simulation platform via the plurality of guide rails.

[0009] Furthermore, the comprehensive verification platform also includes a plurality of fixing mechanisms arranged on the base for fixing the tower-shaped simulation platform.

[0010] Furthermore, two fixing mechanisms are arranged on the base.

[0011] Furthermore, the fixing mechanism includes a sliding sleeve fixedly connected to the base, a sliding rod slidably connected to the sliding sleeve, a spring connected between the sliding sleeve and the sliding rod, and a recessed hole opened on the tower-shaped simulation platform, and when the sliding rod is located in the recessed hole, the tower-shaped simulation platform is restricted from sliding.

[0012] Furthermore, a connecting block is connected between the slide bars of the two fixing mechanisms, and a handle is fixedly connected to the connecting block. Pulling the handle drives the slide bars of the two fixing mechanisms to move synchronously through the connecting block.

[0013] The beneficial effect of the utility model is that by sliding the tower-shaped simulation platform backward, the tower-shaped simulation platform slides on the base and drives the detection block to slide backward together. In this way, when it is necessary to use the pillar side limit measurement platform, the tower-shaped simulation platform can be pushed backward to make the tower-shaped simulation platform leave the middle position that blocks the measurement laser beam, so as to prevent the measured measuring instrument from being blocked and interfered. When it is necessary to perform calibration measurement of the platform limit measuring instrument, the tower-shaped simulation platform can be translated back to the middle position, thereby achieving the effect that different railway track measuring instruments will not affect each other when performing calibration measurement on the comprehensive calibration platform, thereby increasing the comprehensive calibration performance. In addition, by integrating multiple calibration instruments together, the functions of multiple railway measuring instruments can be measured and tested, which can reduce the cost of occupying the site and increase the calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2The utility model is a schematic diagram of the structure of the track inspection instrument calibration platform, the platform limit measuring instrument platform and the pillar side limit measuring platform.

[0016] Figure 3 It is a structural schematic diagram of the track inspection instrument calibration platform and the platform limit measuring instrument stand of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the detection state of the detected measuring instrument of the utility model.

[0018] Figure 5 It is a schematic structural diagram of the first-viewing angle of the calibration platform of the track inspection instrument of the utility model.

[0019] Figure 6 It is a schematic structural diagram of the second viewing angle of the calibration platform of the track inspection instrument of the utility model.

[0020] Figure 7 It is a structural schematic diagram of the adjustment state of the calibration platform of the track inspection instrument of the utility model.

[0021] Figure 8 It is a structural schematic diagram of the fixing mechanism of the utility model.

[0022] The marks in the attached drawings are: 1-contact network measuring instrument stand, 2-track inspection instrument calibration stand, 21-first rail, 22-second rail, 23-track gauge, 24-support foot, 25-handwheel, 26-superelevation block, 27-lifting mechanism, 3-working steel platform, 4-platform limit measuring instrument stand, 41-base, 42-guide rail, 43-tower-shaped simulation platform, 44-detection block, 45-limit vertical dimension, 46-limit lateral dimension, 47-fixing mechanism, 471-sleeve, 472-slide rod, 473-spring, 48-connecting block, 49-handle, 5-pillar side limit measuring stand, 6-roof, 7-ground, 8-detected measuring instrument, 9-measuring laser beam. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed to" 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 herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are 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.

[0026] A comprehensive verification platform for calibrating multiple types of railway measuring instruments, such as Figure 1 As shown, it includes a contact network measuring instrument stand 1, a track inspection instrument calibration platform 2, a platform clearance measuring instrument stand 4, and a plurality of pillar side clearance measuring stands 5, the track inspection instrument calibration platform 2, the platform clearance measuring instrument stand 4, and the plurality of pillar side clearance measuring stands 5 are arranged on the same fixed base surface, and the track inspection instrument calibration platform 2, the platform clearance measuring instrument stand 4, and the plurality of pillar side clearance measuring stands 5 are arranged in sequence from right to left on the same central axis, and the contact network measuring instrument stand 1 is located directly above the track inspection instrument calibration platform 2;

[0027] The platform limit measuring instrument stand 4 includes a base 41 arranged on the fixed base surface, a tower-shaped simulation platform 43 slidably connected to the base 41, and a plurality of detection blocks 44 arranged in a stepped manner on the tower-shaped simulation platform 43;

[0028] The base 41 is provided with a plurality of guide rails 42 , and the base 41 is slidably connected to the tower-shaped simulation platform 43 via the plurality of guide rails 42 .

[0029] It can be understood that the comprehensive verification platform of the utility model can be used as: railway track contact network geometric parameter measuring instrument, railway platform geometric parameter measuring instrument, subway track power supply contact rail geometric parameter measuring instrument, railway track inspection instrument and other railway special measuring instruments for metrological verification;

[0030] Among them, the track inspection instrument calibration platform 2, the platform clearance measuring instrument stand 4, and multiple pillar side clearance measuring stands 5 are arranged on the ground 7, and the overhead line measuring instrument stand 1 is arranged on the roof 6;

[0031] like Figure 5-Figure 7 As shown, the track inspection instrument calibration platform 2 is a special measuring instrument for track inspection instruments, which can simulate railway tracks. The specific description is as follows:

[0032] The track inspection instrument calibration platform 2 needs to be installed on a stable fixed base surface, such as the ground 7. It is a set of H-shaped steel structures, with a parallel first rail 21 and a second rail 22 on the left and right sides respectively. The top surfaces of the first rail 21 and the second rail 22 are in the same plane A. "Plane A needs to be adjusted to a horizontal state", which is the top surface of the track; there are three legs 24 under the first rail 21 and the second rail 22, two legs 24 under the left first rail 21, and another leg 24 in the middle under the right second rail 22. Adjusting the three legs 24 can adjust the top surface of the track to a horizontal state. The inner side surfaces B and C of the first rail 21 and the second rail 22 are parallel working surfaces, and the B and C surfaces are perpendicular to the A surface. The distance between the B and C surfaces is the track gauge 23.

[0033] The support leg 24 under the second rail 22 is provided with an electric lifting mechanism 27, which can lift the second rail 22. The superelevation block 26 is used to support the calibration table under the second rail 22, so that the rail top surface A can be tilted, so that the superelevation of the railway track can be simulated. Different superelevation blocks 26 correspond to different rail superelevation values.

[0034] The second rail 22 on the track gauge tester calibrating platform 2 can translate and slide relative to the first rail 21. It is a movable second rail 22. By turning the hand wheel 25, the simulated rail spacing of the track gauge tester calibrating platform 2 can be changed, and different track gauge 23 values ​​can be simulated. The national railway standard track gauge 23 is 1435mm. The "TB3147-2020 Railway Track Inspector" standard stipulates that the track gauge 23 range of the railway track inspector is 1410~1470mm, so the track gauge 23 of the track gauge tester calibrating platform 2 can be slightly larger than this range;

[0035] The track gauge calibration platform 2 simulates different track gauge 23 values ​​and superelevation values ​​as metrological calibration values, and can be used alone to perform metrological calibration on the railway track gauge, a commonly used railway-specific measuring tool.

[0036] Platform clearance measuring instrument stand 4, such as Figure 2-Figure 4 As shown, the specific description is as follows: Since the track inspection instrument calibration platform 2 is a platform structure supported by three fulcrums, the instrument to be inspected placed thereon needs to be placed at the central axis position, and the platform limit measuring instrument stand 4 is arranged along the central axis of the track inspection instrument calibration platform 2;

[0037] According to the requirements for calibration points in the railway platform clearance measuring instrument stand 4 standard, the platform clearance measuring instrument stand 4 simulates a plurality of railway platform eave standards at different heights and distances from the simulated track, i.e., the track gauge calibration platform 2, so as to calibrate the platform measuring instrument.

[0038] According to the provisions of the calibration specification of the platform clearance measuring instrument, it is necessary to set different detection points for the horizontal and vertical dimensions of the limits. Therefore, the platform clearance measuring instrument stand 4 is arranged with eight stepped detection blocks 44 as simulated platform eaves. Each detection block 44 is a steel cuboid, the top surface simulates the platform surface, and the side facing the calibration platform simulates the platform side. The vertical dimension 45 and the horizontal dimension 46 of the simulated platform are determined by actual measurement as the standard values ​​for the calibration of the platform measuring instrument.

[0039] Since the platform clearance measuring instrument stand 4 is higher than the pillar side clearance measuring stand 5, it will affect the use of the pillar side clearance stand by other instruments. The distance of the pillar side clearance measuring stand 5 is farther from the track inspection instrument calibration stand 2 than the platform clearance measuring instrument stand 4. When the measured measuring instrument 8 is placed on the track inspection instrument calibration stand 2 and uses the laser distance measurement function to measure the three pillar side clearance measuring stands 5, the measuring laser beam 9 will be blocked by the platform clearance measuring instrument stand 4 and cannot be measured. Therefore, by sliding the tower-shaped simulation platform 43 to the rear side, the tower-shaped simulation platform 43 is on the base 41. The upward sliding movement drives the detection block 44 to slide backward together, so that when the pillar side limit measurement platform 5 is needed, the tower-shaped simulation platform 43 can be pushed backward to make the tower-shaped simulation platform 43 leave the middle position that blocks the measurement laser beam 9, to prevent the measured measuring instrument from being blocked and interfered. When the platform limit measuring instrument calibration measurement is needed, the tower-shaped simulation platform 43 can be translated back to the middle position, thereby achieving the effect of different railway track measuring instruments not affecting each other during calibration measurement on the comprehensive calibration platform, thereby increasing the comprehensive calibration effect.

[0040] In summary, by using the translatable platform limit measuring instrument stand 4 on the comprehensive calibration platform, the influence of the track gauge calibration platform 2, the platform limit measuring instrument stand 4 and the pillar side limit measuring stand 5 on the same central axis on the calibration measurement of the contact network geometric parameter measuring instrument can be avoided.

[0041] The contact network measuring instrument stand 1 is specifically described as follows: the contact network measuring instrument stand 1 can simulate the contact line, the first rail 21 and the second rail 22 of the track inspection instrument calibration stand 2 simulate the rails, and the pillar side limit measurement stand 5 simulates the pillar. Through the combination of the above three, the contact network contact line height, contact line pull-out value, pillar side limit section, track gauge 23, superelevation and other geometric parameters can be simulated, and the calibration of the contact network geometric parameter measuring instrument can be realized.

[0042] The comprehensive verification platform also includes a working steel platform 3, and the working steel platform 3 is used for installing and debugging the contact network measuring instrument stand 1.

[0043] Among them, since the height of the contact network measuring instrument stand 1 is relatively high, 5 to 6 meters above the top surface of the track, it is very inconvenient to install and debug. By setting up the working steel platform 3, it is convenient for personnel to install and debug the contact network measuring instrument stand 1.

[0044] The comprehensive verification platform also includes a plurality of fixing mechanisms 47 disposed on the base 41 for fixing the tower-shaped simulation platform 43 .

[0045] It can be understood that when the platform limit measuring instrument needs to be calibrated and measured, the tower-shaped simulation platform 43 is translated back to the middle position. At this time, the operator can operate the fixing mechanism 47 to fix the tower-shaped simulation platform 43 to prevent the tower-shaped simulation platform 43 from moving when the platform limit measuring instrument is calibrated and measured, thereby affecting the measurement data.

[0046] Two fixing mechanisms 47 are arranged on the base 41 .

[0047] It can be understood that the two fixing mechanisms 47 are respectively located in front and behind the base 41. When the platform limit measuring instrument needs to be calibrated and measured, the front fixing mechanism 47 fixes the tower-shaped simulation platform 43. When the tower-shaped simulation platform 43 is moved to the rear side to avoid the tower-shaped simulation platform 43 affecting the calibration and measurement of the contact network geometry parameter measuring instrument, the rear fixing mechanism 47 fixes the tower-shaped simulation platform 43 to prevent the tower-shaped simulation platform 43 from moving to the front side, which would affect the measurement data during the calibration and measurement of the contact network geometry parameter measuring instrument.

[0048] The fixing mechanism 47 includes a sliding sleeve 471 fixedly connected to the base 41, a sliding rod 472 slidably connected to the sliding sleeve 471, a spring 473 connected between the sliding sleeve 471 and the sliding rod 472, and a concave hole opened on the tower-shaped simulation platform 43. When the sliding rod 472 is located in the concave hole, the tower-shaped simulation platform 43 is restricted from sliding.

[0049] It can be understood that when the operator needs to contact and fix the tower-shaped simulation platform 43, the operator can pull the sliding bar 472, the spring 473 is stretched, and the sliding bar 472 will move out of the recessed hole, thereby releasing the tower-shaped simulation platform 43. At this time, the operator can move the tower-shaped simulation platform 43 from the original position. After the tower-shaped simulation platform 43 moves from the original position, the operator releases the sliding bar 472. At this time, the spring 473 is reset and will drive the sliding bar 472 to reset. When the tower-shaped simulation platform 43 needs to be fixed, the operator first pulls the sliding bar 472, the spring 473 is stretched, and then the tower-shaped simulation platform 43 is moved to align the recessed hole on the tower-shaped simulation platform 43 with the sliding bar 472. Then the operator releases the sliding bar 472, and the spring 473 will drive the sliding bar 472 to move into the recessed hole of the tower-shaped simulation platform 43, thereby fixing the tower-shaped simulation platform 43.

[0050] A connecting block 48 is connected between the slide bars 472 of the two fixing mechanisms 47 , and a handle 49 is fixedly connected to the connecting block 48 . Pulling the handle 49 drives the slide bars 472 of the two fixing mechanisms 47 to move synchronously via the connecting block 48 .

[0051] It can be understood that the operator can pull the handle 49, and the handle 49 drives the connecting block 48 to drive the sliding rods 472 of the two fixing mechanisms 47 to move synchronously, thereby facilitating the release of the tower-shaped simulation platform 43, or fixing it after moving.

[0052] To summarize, by sliding the tower-shaped simulation platform 43 backward, the tower-shaped simulation platform 43 slides on the base 41 and drives the detection block 44 to slide backward together. In this way, when the pillar side limit measurement platform 5 is needed, the tower-shaped simulation platform 43 can be pushed backward to make the tower-shaped simulation platform 43 leave the middle position that blocks the measurement laser beam 9 to prevent the measured measuring instrument from being blocked and interfered. When the platform limit measuring instrument calibration measurement is required, the tower-shaped simulation platform 43 can be translated back to the middle position. This ensures that different railway track measuring instruments will not affect each other when performing calibration measurements on the comprehensive calibration platform, thereby increasing the comprehensive calibration effect. In addition, by integrating a variety of calibration instruments together, the functions of a variety of railway measuring instruments can be measured and tested, which can reduce the cost of occupying the site and increase the calibration efficiency.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A comprehensive calibration platform for calibrating multiple types of railway measuring instruments, characterized in that: It includes a catenary measuring instrument stand, a track gauge calibration platform, a platform clearance measuring instrument stand, and a plurality of pillar side clearance measuring stands, wherein the track gauge calibration platform, the platform clearance measuring instrument stand, and a plurality of pillar side clearance measuring stands are arranged on the same fixed base surface, and the track gauge calibration platform, the platform clearance measuring instrument stand, and a plurality of pillar side clearance measuring stands are arranged in sequence from right to left on the same central axis, and the catenary measuring instrument stand is located directly above the track gauge calibration platform; The platform limit measuring instrument stand comprises a base arranged on the fixed base surface, a tower-shaped simulation platform slidably connected to the base, and a plurality of detection blocks arranged in a stepped manner on the tower-shaped simulation platform.

2. The comprehensive verification platform according to claim 1, characterized in that: The comprehensive verification platform also includes an operating steel platform, which is used for installing and debugging the contact network measuring instrument stand.

3. The comprehensive verification platform according to claim 1, characterized in that: A plurality of guide rails are arranged on the base, and the base is slidably connected to the tower-shaped simulation platform via the plurality of guide rails.

4. The comprehensive verification platform according to claim 1, characterized in that: The comprehensive verification platform also includes a plurality of fixing mechanisms arranged on the base for fixing the tower-shaped simulation platform.

5. The comprehensive verification platform according to claim 4, characterized in that: Two fixing mechanisms are arranged on the base.

6. The comprehensive verification platform according to claim 5, characterized in that: The fixing mechanism includes a sliding sleeve fixedly connected to the base, a sliding rod slidably connected to the sliding sleeve, a spring connected between the sliding sleeve and the sliding rod, and a concave hole opened on the tower-shaped simulation platform. When the sliding rod is located in the concave hole, the tower-shaped simulation platform is restricted from sliding.

7. The comprehensive verification platform according to claim 6, characterized in that: A connecting block is connected between the slide bars of the two fixing mechanisms, and a handle is fixedly connected to the connecting block. Pulling the handle drives the slide bars of the two fixing mechanisms to move synchronously through the connecting block.

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