Turnout switch rail heel end height difference measuring device

Abstract

The utility model discloses a turnout switch rail heel end height difference measuring device. The measuring surface of the first measuring head is used for being attached to the bottom surface of a raw material section rail; the measuring surface of the second measuring head is used for being attached to the side surface of a forming section rail; the connecting part is respectively connected with the first measuring head and the second measuring head; the measuring part is arranged at the lower end part of the second measuring head and is formed by extending along the direction parallel to the bottom surface of the forming section rail; the first measuring scale is attached to the measuring surface of the measuring part, the lower end face of the first measuring head is perpendicular to the measuring surface of the first measuring head, the measuring surface of the first measuring head is perpendicular to the measuring surface of the second measuring head, and the measuring surface of the second measuring head is parallel to the measuring surface of the measuring part. The height difference measuring device can effectively measure the rail bottom surface height difference of the turnout switch rail heel end rough finished product before the turnout switch rail heel end blank is processed into the finished product, and is simple in structure, low in cost, low in measuring environment requirement, low in maintenance requirement and suitable for wide popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of turnout point rail measuring devices, in particular to a turnout point rail heel-end height difference measuring device. Background Art

[0002] The turnout point rail is a key component in the switch. By turning the turnout point rail, the train can be guided to the main line or the side line. The turnout point rail can be divided into symmetrical section rails and asymmetrical section rails according to the cross-section of the rail. Among them, the asymmetrical section rail has a lower height, good stability, and no climbing planing at the bottom of the rail, and has relatively good strength. At the same time, elastic bending can be set at the heel end, so it is widely used in railway turnout points.

[0003] When connecting asymmetric rails with symmetrical rails, the connecting section is required to be processed into a symmetrical standard rail shape. Therefore, the hot die forging process is usually used to forge the heel of the asymmetric rail into a transition section of 150mm-200mm in length and a forming section of 450mm-1050mm in length. This results in a height difference between the bottom surface of the formed section of the heel of the pointed rail and the bottom surface of the original section, and the height difference of the bottom surface of the rail is different for different rail types. For example, in the 60AT1-60kg / m pointed rail heel, the height of the 60kg / m section of the formed section is 176mm, and the height of the 60AT1 section of the original section is 152mm, and the height difference of the rail bottom is 24mm. In addition, since the pointed rail heel end is usually machined from a hot forging blank, there is often a machining allowance on the bottom surface of the blank forming section of the pointed rail heel end. In order to facilitate the smooth demoulding of the rail heel end after die forging, the bottom surface of the blank forming section is designed with a draft angle. Therefore, the height difference of the bottom of the pointed rail heel end blank cannot be directly measured by existing conventional measuring tools. The height difference of the bottom surface of the finished pointed rail heel end can only be measured after the blank has gone through processes such as sawing, top adjustment, milling, and height difference adjustment. After measurement and inspection, it is determined whether the product height difference meets the design drawings and standard requirements based on different height difference data. If the height difference size exceeds the tolerance, it is adjusted again based on the excess data until it meets the product standard requirements. This process is cumbersome and complicated, which seriously affects the product production efficiency.

[0004] At present, high-end measuring equipment applying optical three-dimensional measurement technology can also be used to perform three-dimensional scanning and imaging on the blank, and the computer system calculates the height difference of the bottom surface of the blank rail according to the three-dimensional imaging model. However, this measuring equipment uses high-precision components, is expensive, and has high requirements for maintenance. Moreover, special design is required for measuring the height difference of the bottom surface of the blank at the heel end of the switch rail, which belongs to customized non-standard equipment, and the market price is at least about 2 million yuan per set. This measuring equipment has the advantages of high automation, time-saving and labor-saving, and high measurement accuracy. At the same time, it has high requirements for the quality of operators. After manually presetting the detection item points and detection positions, the collected three-dimensional data can be calculated and analyzed to obtain the required data. The blank at the heel end of the switch rail is generally placed upright. This measuring equipment needs to rotate the camera at multiple angles to scan and collect the three-dimensional data of the blank, which has high requirements for the placement space of the blank at the heel end of the switch rail. It is necessary to ensure the installation space of the camera and ensure that there are no other interfering objects within the scanning range. Otherwise, the system cannot intelligently identify foreign objects, resulting in incorrect data collection and requiring manual identification. Using three-dimensional scanning and imaging technology to scan and measure the blank has high requirements for the surface of the forging blank. The oxide scale and iron sheet attached to the surface of the hot die forging blank will directly affect the accuracy of the model after three-dimensional imaging, resulting in data distortion and large measurement errors. After the equipment scans, it cannot intelligently identify and screen the pits, deformations, etc. formed on the surface of the local blank, which is likely to cause the measurement dimension accuracy to be affected by the blank defects such as local surface pits and deformations on the acquisition reference surface, and requires manual review and verification or other measurement methods for calibration. Since the blank at the heel end of the switch rail belongs to the hot die forging blank, the blank is affected by aspects such as cooling temperature, placement form, metal flow, and die forging process, and the external dimensions of the blank fluctuate, which directly affects the popularization and use of three-dimensional scanning and imaging technology. Therefore, there are only a few application cases for the detection of external dimensions in the forging blank industry, and the application effects are not good. Utility Model Content

[0005] The utility model provides a device for measuring the height difference at the heel end of a turnout switch rail, so as to solve the technical problems that the height difference of the bottom surface of the rail at the heel end of the existing turnout switch rail cannot be effectively measured, or the measuring equipment is expensive, has high requirements for the measuring environment, and has high requirements for maintenance.

[0006] According to one aspect of the present utility model, there is provided a turnout switch rail heel end height difference measuring device, which includes a first measuring head with a measuring surface for fitting with the bottom surface of the raw material section rail, a second measuring head with a measuring surface for fitting with the side surface of the formed section rail, a connecting part respectively connected to the first measuring head and the second measuring head for making the lower end surfaces of the first measuring head and the second measuring head be in the same plane, a measuring part arranged on the lower end part of the second measuring head and extending along a direction parallel to the bottom surface of the formed section rail, a first measuring ruler for vertically abutting against the bottom surface of the formed section rail and fitting with the measuring surface of the measuring part, and a second measuring ruler for measuring the thickness of the formed section rail limb that fits with the second measuring head and is correspondingly arranged opposite to the side surface of the measuring part. The lower end surface of the first measuring head and the measuring surface of the first measuring head are arranged in parallel, the measuring surface of the first measuring head and the measuring surface of the second measuring head are arranged perpendicularly, and the measuring surface of the second measuring head and the measuring surface of the measuring part are arranged in parallel.

[0007] As a further improvement of the above technical solution:

[0008] Further, an installation groove one is recessed on the measuring end of the first measuring head, and a magnetic attracting part one is arranged in the installation groove one.

[0009] Further, there are a plurality of installation grooves one, and the plurality of installation grooves one are arranged at intervals on the measuring end of the first measuring head.

[0010] Further, an installation groove two is recessed on the measuring end of the second measuring head, and a magnetic attracting part two is arranged in the installation groove two.

[0011] Further, there are a plurality of installation grooves two, and the plurality of installation grooves two are arranged at intervals on the measuring end of the second measuring head.

[0012] Further, the connecting part is arranged obliquely so that the lower end surfaces of the first measuring head and the second measuring head are arranged in a staggered manner in the same plane.

[0013] Further, the volume of the first measuring head is larger than the volume of the second measuring head.

[0014] Further, the horizontal width of the measuring part is 20 mm.

[0015] Further, the first measuring head, the second measuring head, the connecting part and the measuring part are integrally formed into an integral structure.

[0016] Further, a lifting hole is opened on the connecting part.

[0017] The present utility model has the following beneficial effects:

[0018] The turnout switch rail heel end height difference measuring device of the present utility model is connected to a first measuring head and a second measuring head respectively through a connecting part, so that the lower end surfaces of the first measuring head and the second measuring head are in the same plane, ensuring the consistency of the reference in the direction of the rail bottom height difference, and arranging the lower end surface of the first measuring head and the measuring surface of the first measuring head in parallel, arranging the measuring surface of the first measuring head and the measuring surface of the second measuring head perpendicularly, and arranging the measuring surface of the second measuring head and the measuring surface of the measuring part in parallel. Before the turnout switch rail heel end blank is processed into a finished product, the measuring surface of the first measuring head is attached to the rail bottom surface of the raw material section to adjust the position in the direction of the rail bottom height difference through this measuring surface, and the measuring surface of the second measuring head is attached to the rail side surface of the formed section to adjust the position in the direction of the rail bottom width through this measuring surface. A measuring part is formed at the lower end of the second measuring head and extends in a direction parallel to the rail bottom surface of the formed section. The first measuring ruler is attached to the measuring surface of the measuring part and vertically abuts against the rail bottom surface of the formed section to measure the height difference H1 between the lower end surface of the second measuring head and the rail bottom surface of the formed section. Then, subtracting the height difference H1 from the height difference H2 between the lower end surface and the measuring surface of the first measuring head, the height difference H3 between the rail bottom surface of the formed section and the rail bottom surface of the raw material section on the turnout switch rail heel end blank is obtained. Measuring the formed rail limb thickness T1 of the formed section that is attached to the second measuring head and corresponds to the side surface of the measuring part with a second measuring ruler, and then subtracting the theoretical standard value T2 of the formed rail limb thickness of the turnout switch rail heel end finished product from the formed rail limb thickness T1, the machining allowance T3 of the rail bottom surface of the formed section on the turnout switch rail heel end blank is obtained. Subtracting T3 from the height difference H3, the actual height difference value between the rail bottom surface of the formed section and the rail bottom surface of the raw material section on the turnout switch rail heel end finished product is obtained, so that it can be confirmed whether the height difference value of the rail bottom surface of the finished product meets the requirements at the blank stage, improving the product processing efficiency. Compared with the prior art, the present solution can effectively measure the height difference of the rail bottom surface of the turnout switch rail heel end finished product before the turnout switch rail heel end blank is processed into a finished product. At the same time, it has a simple structure, low cost, low requirements for the measuring environment, low requirements for maintenance, strong practicability, and is suitable for wide promotion and application.

[0019] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 is a partial structural schematic diagram of the turnout switch rail heel end height difference measuring device of the preferred embodiment of the present utility model;

[0022] Figure 2It is a partial structural schematic diagram during the measurement of the switch tongue rail heel end height difference measuring device according to the preferred embodiment of the present utility model;

[0023] Figure 3 It is a partial structural schematic diagram during the measurement of the switch tongue rail heel end height difference measuring device according to the preferred embodiment of the present utility model;

[0024] Figure 4 It is a sectional schematic diagram of the switch tongue rail heel end height difference measuring device according to the preferred embodiment of the present utility model;

[0025] Figure 5 It is a sectional schematic diagram of the switch tongue rail heel end height difference measuring device according to the preferred embodiment of the present utility model;

[0026] Figure 6 It is a sectional schematic diagram of a partial structure of the switch tongue rail blank to be measured;

[0027] Figure 7 It is a partial structural schematic diagram during the measurement of the switch tongue rail heel end height difference measuring device according to the preferred embodiment of the present utility model;

[0028] Figure 8 It is a structural schematic diagram during the measurement of the second measuring ruler in the switch tongue rail heel end height difference measuring device according to the preferred embodiment of the present utility model.

[0029] Legend description:

[0030] 10. First measuring head; 11. First installation groove; 20. Second measuring head; 21. Second installation groove; 30. Connecting part; 31. Hoisting hole; 40. Measuring part; 50. First measuring ruler; 60. Second measuring ruler. Specific implementation manners

[0031] The following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings. However, the present utility model can be implemented in many different ways defined and covered by the following.

[0032] Such as Figures 1 - 8As shown in the figure, the measuring device for the height difference at the heel end of the switch tongue rail in this embodiment includes a first measuring head 10 whose measuring surface is used to fit against the bottom surface of the raw material rail section, a second measuring head 20 whose measuring surface is used to fit against the side surface of the formed rail section, a connecting part 30 that is respectively connected to the first measuring head 10 and the second measuring head 20 and is used to make the lower end surfaces of the first measuring head 10 and the second measuring head 20 be in the same plane, a measuring part 40 arranged on the lower end part of the second measuring head 20 and extending in a direction parallel to the bottom surface of the formed rail section, a first measuring ruler 50 whose measuring surface fits against the measuring part 40 and is used to vertically abut against the bottom surface of the formed rail section, and a second measuring ruler 60 used to measure the thickness of the formed rail limb that fits against the second measuring head 20 and is arranged corresponding to the side surface of the measuring part 40. The lower end surface of the first measuring head 10 and the measuring surface of the first measuring head 10 are arranged in parallel, the measuring surface of the first measuring head 10 and the measuring surface of the second measuring head 20 are arranged perpendicular to each other, and the measuring surface of the second measuring head 20 and the measuring surface of the measuring part 40 are arranged in parallel. It should be understood that the direction indication in this embodiment is based on Figure 1 and Figure 2 . Optionally, the first measuring ruler 50 is a straight ruler. Optionally, the second measuring ruler 60 is a vernier caliper. It should be understood that the specific structures of the straight ruler and the vernier caliper belong to the well-known technologies of those skilled in the art.

[0033] As Figures 1 - 6As shown, specifically, for the turnout switch rail heel end height difference measuring device of the present utility model, it is connected to the first measuring head 10 and the second measuring head 20 respectively through the connecting part 30, so that the lower end surfaces of the first measuring head 10 and the second measuring head 20 are in the same plane, to ensure the consistency of the reference in the direction of the rail bottom height difference, and the lower end surface of the first measuring head 10 and the measuring surface of the first measuring head 10 are arranged in parallel, the measuring surface of the first measuring head 10 and the measuring surface of the second measuring head 20 are arranged perpendicular to each other, and the measuring surface of the second measuring head 20 and the measuring surface of the measuring part 40 are arranged in parallel. Before the turnout switch rail heel end blank is processed into a finished product, the measuring surface of the first measuring head 10 is attached to the rail bottom surface of the raw material section, so as to adjust the position in the direction of the rail bottom height difference through this measuring surface, the measuring surface of the second measuring head 20 is attached to the rail side surface of the formed section, so as to adjust the position in the direction of the rail bottom width through this measuring surface, and a measuring part 40 extending along the direction parallel to the rail bottom surface of the formed section is formed at the lower end part of the second measuring head 20. The first measuring ruler 50 is attached to the measuring surface of the measuring part 40 and vertically abuts against the rail bottom surface of the formed section, so as to measure the height difference H1 between the lower end surface of the second measuring head 20 and the rail bottom surface of the formed section. Then, the height difference H2 between the lower end surface and the measuring surface of the first measuring head 10 is subtracted from the height difference H1, and the height difference H3 between the rail bottom surface of the formed section and the rail bottom surface of the raw material section on the turnout switch rail heel end blank can be obtained; the thickness T1 of the formed rail limb corresponding to the side surface of the measuring part 40 and attached to the second measuring head 20 is measured through the second measuring ruler 60, and then the thickness T1 of the formed rail limb is subtracted from the theoretical standard value T2 of the finished rail limb thickness of the turnout switch rail heel end, and the machining allowance T3 of the rail bottom surface of the formed section on the turnout switch rail heel end blank can be obtained. Then, the height difference H3 is subtracted from T3 to obtain the actual height difference value between the rail bottom surface of the formed section and the rail bottom surface of the raw material section on the turnout switch rail heel end finished product, so that it can be confirmed whether the height difference value of the rail bottom surface of the finished product meets the requirements at the blank stage, and the product processing efficiency is improved; compared with the prior art, the present solution can effectively measure the height difference of the rail bottom surface of the turnout switch rail heel end finished product before the turnout switch rail heel end blank is processed into a finished product. At the same time, the structure is simple, the cost is low, the requirements for the measuring environment are low, the requirements for maintenance are low, the practicability is strong, and it is suitable for wide promotion and application.

[0034] As Figure 1 shown, in this embodiment, an installation groove one 11 is recessed on the measuring end of the first measuring head 10, and a magnetic attracting part one (not shown in the figure) is arranged in the installation groove one 11. Specifically, the magnetic attracting part one is accommodated through the installation groove one 11, so as to be magnetically connected with the rail bottom surface of the raw material section through the magnetic attracting part one, and further make the measuring surface of the first measuring head 10 attached to the rail bottom surface of the raw material section, and it is convenient to check and adjust the measuring position of the first measuring head 10, reducing the measuring error. It should be understood that the depth of the installation groove one 11 is greater than the thickness of the magnetic attracting part one, so as to ensure that the magnetic attracting surface after the installation of the magnetic attracting part one does not exceed the measuring surface of the first measuring head 10. Optionally, the magnetic attracting part one is a magnet.

[0035] AsFigure 1 As shown, in this embodiment, there are multiple first mounting grooves 11, and the multiple first mounting grooves 11 are arranged at intervals on the measuring end of the first measuring head 10. Specifically, by installing multiple first magnetic attraction parts through the multiple first mounting grooves 11, the reliability of magnetic attraction connection is improved.

[0036] As Figure 1 shown, in this embodiment, a second mounting groove 21 is recessed on the measuring end of the second measuring head 20, and a second magnetic attraction part (not shown in the figure) is arranged in the second mounting groove 21. Specifically, the second magnetic attraction part is accommodated through the second mounting groove 21 to magnetically connect with the bottom surface of the raw material section rail through the second magnetic attraction part, so that the measuring surface of the second measuring head 20 is attached to the bottom surface of the raw material section rail, and it is convenient to check and adjust the measuring position of the second measuring head 20, reducing the measuring error. It should be understood that the depth of the second mounting groove 21 is greater than the thickness of the second magnetic attraction part to ensure that the magnetic attraction surface after the installation of the second magnetic attraction part does not exceed the measuring surface of the second measuring head 20. Optionally, the second magnetic attraction part is a magnet.

[0037] As Figure 1 shown, in this embodiment, there are multiple second mounting grooves 21, and the multiple second mounting grooves 21 are arranged at intervals on the measuring end of the second measuring head 20. Specifically, by installing multiple second magnetic attraction parts through the multiple second mounting grooves 21, the reliability of magnetic attraction connection is improved.

[0038] As Figure 1 and Figure 2 shown, in this embodiment, the connecting part 30 is inclinedly arranged so that the lower end surfaces of the first measuring head 10 and the second measuring head 20 are arranged in a staggered manner in the same plane. Specifically, through the inclinedly arranged connecting part 30, the lower end surfaces of the first measuring head 10 and the second measuring head 20 are arranged in a staggered manner in the same plane, so that the measuring surfaces of the first measuring head 10 and the second measuring head 20 are respectively in contact with the bottom surface of the raw material section rail and the side surface of the formed section rail arranged in a staggered manner, so as to be applicable to the measurement of different rail models and have strong versatility.

[0039] As Figure 1 and Figure 2As shown in the figure, in this embodiment, the volume of the first measuring head 10 is larger than that of the second measuring head 20. Specifically, the measuring surface of the first measuring head 10 contacts the bottom surface of the raw material section rail. It is necessary to ensure that the length and width of the first measuring head 10 are relatively large to ensure a large fitting area between the measuring surface of the first measuring head 10 and the bottom surface of the raw material section rail. And since the height difference needs to be measured, it is also necessary to ensure that the height of the first measuring head 10 is relatively large. Therefore, the volume of the first measuring head 10 needs to be relatively large. While the measuring surface of the second measuring head 20 contacts the side surface of the formed section rail. Therefore, ensuring the height and length of the second measuring head 20 can guarantee a sufficient measuring area, that is, the volume of the second measuring head 20 can be relatively small. In this embodiment, the first measuring head 10 and the second measuring head 20 are of different sizes. While ensuring the measurement accuracy, the weight of the device is reduced to facilitate on-site carrying and measurement.

[0040] As Figure 4 and Figure 2 shown in the figure, in this embodiment, the horizontal width of the measuring part 40 is 20 mm. It should be understood that the machining allowances at different positions in the width direction of the rail bottom of the same cross-section of the formed section vary due to the draft angle. Therefore, by ensuring that the horizontal width L of the measuring part 40 in this embodiment is 20 mm, it is convenient to perform data conversion according to the draft angle of the bottom surface of the formed section rail.

[0041] As Figures 1 - 3 shown in the figure, in this embodiment, the first measuring head 10, the second measuring head 20, the connecting part 30 and the measuring part 40 are integrally formed into an integral structure. Specifically, ensuring that the first measuring head 10, the second measuring head 20, the connecting part 30 and the measuring part 40 are integrally formed into an integral structure can ensure the accurate and reliable relative positions between the components, thereby improving the measurement accuracy and facilitating carrying and use.

[0042] As Figure 1 shown in the figure, in this embodiment, a lifting hole 31 is provided on the connecting part 30. Specifically, a lifting structure is connected through the lifting hole 31 to lift the first measuring head 10, the second measuring head 20, the connecting part 30 and the measuring part 40 of the integral structure when not in use to prevent omission and loss. Optionally, the lifting structure is a combination of a rope and a hook.

[0043] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A turnout switch rail heel end height difference measuring device, characterized in that, It includes a first measuring head (10) with a measuring surface for fitting against the bottom surface of the raw material section rail, a second measuring head (20) with a measuring surface for fitting against the side surface of the formed section rail, a connecting part (30) respectively connected to the first measuring head (10) and the second measuring head (20) for making the lower end surfaces of the first measuring head (10) and the second measuring head (20) be in the same plane, a measuring part (40) arranged on the lower end part of the second measuring head (20) and extending in a direction parallel to the bottom surface of the formed section rail, a first measuring ruler (50) whose measuring surface fits against the measuring part (40) and vertically abuts against the bottom surface of the formed section rail, and a second measuring ruler (60) for measuring the thickness of the limb of the formed section rail that fits against the second measuring head (20) and is arranged corresponding to the side surface of the measuring part (40). The lower end surface of the first measuring head (10) and the measuring surface of the first measuring head (10) are arranged in parallel, the measuring surface of the first measuring head (10) and the measuring surface of the second measuring head (20) are arranged perpendicular to each other, and the measuring surface of the second measuring head (20) and the measuring surface of the measuring part (40) are arranged in parallel.

2. The switch tongue heel height difference measuring device according to claim 1, characterized in that An installation groove one (11) is recessed on the measuring end of the first measuring head (10), and a magnetic attracting part one is arranged in the installation groove one (11).

3. The switch tongue heel height difference measuring device according to claim 2, characterized in that, There are multiple installation grooves one (11), and the multiple installation grooves one (11) are arranged at intervals on the measuring end of the first measuring head (10).

4. The switch tongue heel height difference measuring device according to claim 1, characterized in that An installation groove two (21) is recessed on the measuring end of the second measuring head (20), and a magnetic attracting part two is arranged in the installation groove two (21).

5. The switch tongue heel height difference measuring device according to claim 4, wherein There are multiple installation grooves two (21), and the multiple installation grooves two (21) are arranged at intervals on the measuring end of the second measuring head (20).

6. The switch tongue heel height difference measuring device according to any one of claims 1-5, characterized in that, The connecting part (30) is arranged obliquely so that the lower end surfaces of the first measuring head (10) and the second measuring head (20) are arranged in a staggered manner in the same plane.

7. The switch tongue heel height difference measuring device according to any one of claims 1-5, characterized in that The volume of the first measuring head (10) is larger than the volume of the second measuring head (20).

8. The switch tongue heel height difference measuring device according to any one of claims 1-5, characterized in that, The horizontal width of the measuring part (40) is 20 mm.

9. The switch tongue heel height difference measuring device according to any one of claims 1-5, characterized in that, The first measuring head (10), the second measuring head (20), the connecting part (30) and the measuring part (40) are integrally formed into an integral structure.

10. The switch tongue heel height difference measuring device according to claim 9, wherein A lifting hole (31) is opened on the connecting part (30).

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