Steel rail straightness measuring instrument verification platform

Abstract

The utility model discloses a steel rail straightness measuring instrument verification platform which comprises a verification unit which comprises an adjustable horizontal base, a horizontal ruler is arranged on the adjustable horizontal base, a plurality of simulation blocks are arranged on the adjustable horizontal base, a simulation surface is arranged on each simulation block, the number of the simulation blocks is multiple, and the horizontal ruler is arranged on the adjustable horizontal base. Simulation surfaces on different simulation blocks are different; and the material pushing unit comprises supporting plates which are symmetrically arranged. According to the utility model, the plurality of simulation blocks are arranged, each simulation block is provided with one simulation surface, the simulation surfaces on different simulation blocks are different, and the simulation surfaces can simulate various unsmooth waveforms, such as sine waves, cosine waves and the like; and the wavelength and the amplitude can be adjusted as required, and the to-be-detected steel rail straightness measuring instrument is placed on the simulation surface for verification, so that comprehensive verification of the measuring instrument is realized, and the verification accuracy and reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway measuring equipment, in particular to a calibration platform for a rail straightness measuring instrument. Background Art

[0002] With the increase in speed of existing lines and the continuous opening of high-speed railways, the impact of uneven rail welds and periodic unevenness on the running smoothness and comfort of trains, especially EMUs, has become apparent, attracting the special attention of engineering and line maintenance personnel. The detection and research of rail unevenness has evolved from a single chordal amplitude measurement within a 1m range to the variation of the unevenness waveform. One-meter electronic straightedge technology and instruments no longer meet the requirements, and research on measuring instruments capable of continuous measurement of rail unevenness over a wider frequency (wavelength) is rapidly developing. However, there is a lack of specialized tools and equipment for testing and calibrating such equipment. There is also a lack of effective means to accurately and comprehensively verify the mathematical models for measuring rail unevenness with complex waveforms and a wide frequency (wavelength), and to calibrate and verify the measurement accuracy of unevenness of various wavelengths under various uneven conditions.

[0003] Chinese patent CN203298762U discloses a calibration platform for a rail straightness measuring instrument. The calibration platform comprises at least one profiling block having a profiling surface. The profiling block is fixedly mounted on a level, and the level is supported and fixed by at least two leveling supports. The advantages of this utility model are that the calibration platform meets the continuous, wide-frequency measurement requirements of the rail straightness measuring instrument and calibrates the rail straightness measuring instrument by comparing the waveform determination value of the profiling surface on the profiling block with the difference between the measured values ​​of the rail straightness measuring instrument. The upper surface of the rail profiling block is machined into a sine (cosine) wave. The wavelength and amplitude of the sine wave have a series of values ​​according to the test requirements and can be replaced as a whole to meet the test conditions of different conditions.

[0004] Existing calibration platforms typically only provide a fixed calibration surface and are unable to simulate rail surfaces with varying degrees of wear, thus limiting the comprehensiveness and accuracy of calibration. Furthermore, the calibration platform's operation is often complex and requires manual operation, which is not only time-consuming and labor-intensive, but also prone to human error. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the above-mentioned problems existing in the existing calibration platform of a rail straightness measuring instrument, the present utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a rail straightness measuring instrument calibration platform. This platform is suitable for resolving the problem that existing calibration platforms generally only provide a fixed calibration surface, which cannot simulate rail surfaces with different degrees of wear, thus limiting the comprehensiveness and accuracy of the calibration. Secondly, the calibration platform operation process is often complicated and requires manual operation, which is not only time-consuming and labor-intensive, but also prone to human error.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a rail straightness measuring instrument calibration platform, comprising:

[0009] A calibration unit comprising an adjustable horizontal base, a level being provided on the adjustable horizontal base, a simulation block being provided on the adjustable horizontal base, a simulation surface being provided on the simulation block, a plurality of simulation blocks being provided, and different simulation surfaces on different simulation blocks being different;

[0010] The pushing unit includes a symmetrically arranged support plate, a track is provided at the bottom of the support plate, the track is fixedly mounted on the adjustable horizontal base, the track and the support plate are slidably connected, a driving motor is provided on one side of the adjustable horizontal base, the output end of the driving motor is fixedly connected to a swing arm, a contact block is detachably connected to the swing arm, a sleeve is fixedly connected to the adjustable horizontal base, a push rod is slidably connected to the inside of the sleeve, the bottom end of the push rod is fixedly connected to a connecting rod, a first spring is provided inside the sleeve, one end of the first spring is fixedly connected to the push rod, and the pushing unit also includes a clamping assembly for clamping the measuring instrument to be tested.

[0011] As a preferred solution of the calibration platform of the rail straightness measuring instrument described in the utility model, one of the support plates is located on the moving path of the push rod, and the connecting rod is located on the moving path of the contact block.

[0012] As a preferred solution of the rail straightness measuring instrument calibration platform described in the utility model, a baffle is fixedly connected to the side of the track away from the sleeve, a second spring is provided between the support plate and the baffle, and the second spring is located inside the track.

[0013] As a preferred solution of the calibration platform of the rail straightness measuring instrument described in the utility model, the clamping assembly includes a fixed rod and a sliding sleeve, two fixed rods are provided, the sliding sleeve is slidably mounted on one end of the fixed rod, the other end of the fixed rod is fixedly connected to the support plate, one end of the support plate is sleeved with a connecting sleeve, an extrusion rod is rotatably connected between the connecting sleeve and the sliding sleeve, a third spring is sleeved on the support plate, and the third spring is located between the connecting sleeve and the fixed rod.

[0014] As a preferred solution of the calibration platform of the rail straightness measuring instrument described in the utility model, a synchronization rod is fixedly connected between the two support plates, and the two support plates are of the same size.

[0015] As a preferred solution of the calibration platform of the rail straightness measuring instrument described in the utility model, the swing arm is provided with a through slot, a fixing screw is provided through the through slot, and the fixing screw is threadedly connected to the contact block.

[0016] The beneficial effects of the utility model are as follows: a plurality of simulation blocks are provided, each of which has a simulation surface, and the simulation surfaces on different simulation blocks are different, and these simulation surfaces can simulate a variety of uneven waveforms, such as sine waves, cosine waves, etc., and the wavelength and amplitude can be adjusted as needed. The rail straightness measuring instrument to be tested is placed on the simulation surface and can be calibrated, thereby realizing comprehensive calibration of the measuring instrument, improving the accuracy and reliability of the calibration, simplifying the calibration process, realizing automatic clamping and pushing of the measuring instrument, and improving the calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of a calibration platform for a rail straightness measuring instrument proposed in the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a calibration unit of a calibration platform for a rail straightness measuring instrument proposed in the present invention;

[0020] Figure 3 This is a schematic structural diagram of a pusher unit of a rail straightness measuring instrument calibration platform proposed in the present invention;

[0021] Figure 4This is a schematic diagram of the structure of the clamping assembly of the calibration platform of a rail straightness measuring instrument proposed in the utility model;

[0022] Figure 5 The present invention provides a schematic diagram of the partial structure of a pusher unit of a calibration platform for a rail straightness measuring instrument.

[0023] Description of the drawings: 100, calibration unit; 101, adjustable horizontal base; 102, spirit level; 103, simulation block; 104, simulation surface; 200, pushing unit; 201, support plate; 202, track; 203, drive motor; 204, swing arm; 205, contact block; 206, sleeve; 207, push rod; 208, connecting rod; 209, first spring; 210, clamping assembly; 211, baffle; 212, second spring; 2101, fixing rod; 2102, sliding sleeve; 2103, connecting sleeve; 2104, extrusion rod; 2105, third spring; 213, synchronization rod; 214, through slot; 215, fixing screw. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0028] Example

[0029] Reference Figure 1 - Figure 5, which is an embodiment of the present utility model, provides a rail straightness measuring instrument calibration platform, including: a calibration unit 100 and a pushing unit 200.

[0030] The calibration unit 100 includes an adjustable horizontal base 101, a level 102 is provided on the adjustable horizontal base 101, a simulation block 103 is provided on the adjustable horizontal base 101, and a simulation surface 104 is provided on the simulation block 103. There are multiple simulation blocks 103, and the simulation surfaces 104 on different simulation blocks 103 are different;

[0031] The adjustable leveling base 101 and level 102 ensure the levelness of the entire calibration platform, further improving calibration accuracy. Multiple simulation blocks 103 are provided, each with a simulation surface 104, with different simulation surfaces 104 on different simulation blocks 103. These simulation surfaces 104 can simulate a variety of irregular waveforms, such as sine and cosine waves, with wavelengths and amplitudes adjustable as needed. Simply place the rail straightness measuring instrument on the simulation surface 104 to perform calibration.

[0032] The pushing unit 200 includes a symmetrically arranged support plate 201, and a track 202 is provided at the bottom of the support plate 201. The track 202 is fixedly mounted on the adjustable horizontal base 101, and the track 202 is slidably connected to the support plate 201. A driving motor 203 is provided on one side of the adjustable horizontal base 101, and the output end of the driving motor 203 is fixedly connected to a swing arm 204, and a contact block 205 is detachably connected to the swing arm 204. A sleeve 206 is fixedly connected to the adjustable horizontal base 101, and a push rod 207 is slidably connected to the inside of the sleeve 206. The bottom end of the push rod 207 is fixedly connected to a connecting rod 208, and a first spring 209 is provided inside the sleeve 206, and one end of the first spring 209 is fixedly connected to the push rod 207. The pushing unit 200 also includes a clamping assembly 210 for clamping the measuring instrument to be tested. A first spring 209 is provided inside the sleeve 206 for providing a reset force for the push rod 207 .

[0033] According to one embodiment of the present invention, the support plate 201 is located on the moving path of the push rod 207 , and the connecting rod 208 is located on the moving path of the contact block 205 .

[0034] According to one embodiment of the present invention, a baffle 211 is fixedly connected to a side of the track 202 away from the sleeve 206 , a second spring 212 is provided between the support plate 201 and the baffle 211 , and the second spring 212 is located inside the track 202 .

[0035] According to one embodiment of the present utility model, the clamping assembly 210 includes a fixed rod 2101 and a sliding sleeve 2102. The fixed rod 2101 is provided with two, and the sliding sleeve 2102 is slidably sleeved on one end of the fixed rod 2101. The other end of the fixed rod 2101 is fixedly connected to the support plate 201. One end of the support plate 201 is sleeved with a connecting sleeve 2103, and an extrusion rod 2104 is rotatably connected between the connecting sleeve 2103 and the sliding sleeve 2102. A third spring 2105 is sleeved on the support plate 201, and the third spring 2105 is located between the connecting sleeve 2103 and the fixed rod 2101. Since the support plate 201 is located in the moving path of the push rod 207, the push rod 207 will first contact the connecting sleeve 2103 on the support plate 201. Since the other side of the support plate 201 is restricted by the second spring 212, the third spring 2105 is squeezed and the squeezing rod 2104 is deflected, thereby pushing the sliding sleeve 2102 away from the support plate 201 until it contacts the flatness measuring instrument to be calibrated, so that the flatness measuring instrument to be calibrated is clamped between the two support plates 201.

[0036] According to one embodiment of the present invention, a synchronization rod 213 is fixedly connected between the two support plates 201 , and the two support plates 201 are of the same size.

[0037] According to one embodiment of the present invention, the swing arm 204 is provided with a through slot 214, and a fixing screw 215 is provided inside the through slot 214. The fixing screw 215 is threadedly connected to the contact block 205. By adjusting the position of the contact block 205, the length of the reciprocating path of the push rod can be adjusted.

[0038] During use, an adjustable leveling base 101 and a level 102 ensure the levelness of the entire calibration platform, further improving calibration accuracy. Multiple simulation blocks 103 are provided, each with a simulation surface 104, with different simulation surfaces 104 on different simulation blocks 103. These simulation surfaces 104 can simulate a variety of irregular waveforms, such as sine and cosine waves, with wavelengths and amplitudes adjustable as needed. Measurements on different simulation surfaces 104 are used as the final value. The rail straightness measuring instrument to be tested is placed on the simulation surface 104 to perform calibration.

[0039] After the calibration of one simulation surface 104 is completed, the driving motor 203 is started, the driving motor 203 drives the swing arm 204 to rotate, so that the contact block 205 is in contact with the connecting rod 208, and then the connecting rod 208 and the push rod 207 are driven to move horizontally, and since the support plate 201 is located on the moving path of the push rod 207, the push rod 207 will first contact the connecting sleeve 2103 on the support plate 201, and since the other side of the support plate 201 is limited by the second spring 212, the third spring 2105 is extruded and the extrusion rod 2104 is deflected, so as to push the sliding sleeve 2102 away from the support plate 201, until it is in contact with the flatness measuring instrument to be calibrated, so that the flatness measuring instrument to be calibrated is clamped between the two support plates 201, the push plate continues to displace and push the support plate 201 and the flatness measuring instrument to be calibrated to move to the next simulation surface 104, until the contact block 205 is separated from the connecting rod 208, the push rod 207 no longer exerts a pushing force on the support plate 201, under the restoring force of the third spring 2105, the sliding sleeve 2102 is reset and no longer clamps the flatness measuring instrument to be calibrated, under the restoring force of the second spring 212, the support plate 201 is reset, and the above steps are repeated, so as to realize the calibration of various waveforms and the comprehensive calibration of the measuring instrument, and the accuracy and reliability of the calibration are improved.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A rail straightness measuring instrument calibration platform, characterized in that: include: A calibration unit (100) comprises an adjustable horizontal base (101), a level ruler (102) being provided on the adjustable horizontal base (101), a simulation block (103) being provided on the adjustable horizontal base (101), a simulation surface (104) being provided on the simulation block (103), a plurality of the simulation blocks (103) being provided, and the simulation surfaces (104) on different simulation blocks (103) being different; The pusher unit (200) comprises a symmetrically arranged support plate (201), a track (202) is provided at the bottom of the support plate (201), the track (202) is fixedly mounted on the adjustable horizontal base (101), the track (202) and the support plate (201) are slidably connected, a driving motor (203) is provided on one side of the adjustable horizontal base (101), an output end of the driving motor (203) is fixedly connected to a swing arm (204), and a detachable connection is provided on the swing arm (204). A contact block (205) is connected, a sleeve (206) is fixedly connected to the adjustable horizontal base (101), a push rod (207) is slidably connected inside the sleeve (206), a connecting rod (208) is fixedly connected to the bottom end of the push rod (207), a first spring (209) is provided inside the sleeve (206), one end of the first spring (209) is fixedly connected to the push rod (207), and the pushing unit (200) further includes a clamping assembly (210) for clamping the measuring instrument to be tested.

2. The rail straightness measuring instrument calibration platform according to claim 1, characterized in that: One of the support plates (201) is located on the moving path of the push rod (207), and the connecting rod (208) is located on the moving path of the contact block (205).

3. The rail straightness measuring instrument calibration platform according to claim 2, characterized in that: A baffle (211) is fixedly connected to one side of the track (202) away from the sleeve (206), a second spring (212) is provided between the support plate (201) and the baffle (211), and the second spring (212) is located inside the track (202).

4. The rail straightness measuring instrument calibration platform according to claim 3, characterized in that: The clamping assembly (210) comprises a fixed rod (2101) and a sliding sleeve (2102), wherein two fixed rods (2101) are provided, wherein the sliding sleeve (2102) is slidingly sleeved on one end of the fixed rod (2101), and the other end of the fixed rod (2101) is fixedly connected to the support plate (201), wherein a connecting sleeve (2103) is sleeved on one end of the support plate (201), and an extrusion rod (2104) is rotatably connected between the connecting sleeve (2103) and the sliding sleeve (2102), and wherein a third spring (2105) is sleeved on the support plate (201), and the third spring (2105) is located between the connecting sleeve (2103) and the fixed rod (2101).

5. The rail straightness measuring instrument calibration platform according to claim 4, characterized in that: A synchronization rod (213) is fixedly connected between the two support plates (201), and the two support plates (201) are of the same size.

6. The rail straightness measuring instrument calibration platform according to claim 5, characterized in that: The swing arm (204) is provided with a through slot (214), the interior of the through slot (214) is provided with a fixing screw (215), and the fixing screw (215) is threadedly connected to the contact block (205).

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