A rail weld tip measuring device

Abstract

This utility model belongs to the field of railway engineering technology and discloses a rail welding tip measuring device, including a straight ruler and at least three dial indicators. Each end and the midpoint of the straight ruler is equipped with a dial indicator, and the measuring end of each dial indicator protrudes from the working side of the straight ruler at the same distance. By using this rail welding tip measuring device to measure the rail welding tips, the dial indicators can intuitively and accurately display the straightness deviation of each measuring point on the rail, thereby improving the speed and automation of rail welding tip measurement and shortening the measurement time. Simultaneously, it can reduce the interference of human operation on the measurement results, improve measurement accuracy, and ensure precise alignment of the rail within the error range of the two-dimensional coordinate system, thereby improving the quality of rail welding, reducing construction costs, and meeting the needs of railway construction and maintenance for high-quality rail welding.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering technology, and in particular to a measuring device for the welding tip of rails. Background Technology

[0002] In the rail welding process, rail alignment is one of the key steps to ensure welding quality. It requires measuring the horizontal and directional values ​​of the rails within a 1-meter range of the weld joint to ensure that the two rails are within the error range of a two-dimensional coordinate system. Currently, alignment is mainly achieved by measuring the values ​​at both ends and the middle position of a 1-meter straightedge.

[0003] In existing technologies, rail alignment measurement methods mainly include the 1m rail straightedge combined with discrete measuring tape method and the trapezoidal ruler method. The 1m straightedge combined with discrete measuring tape method has the following drawbacks: First, the thickness of the measuring tape is discrete, requiring multiple trials to obtain accurate data; second, the measurement process is cumbersome and complex, with repeated trials consuming significant manpower and time, making operation extremely inconvenient; third, the measured values ​​are not intuitive enough, making quick reading and analysis difficult; fourth, the measurement results are greatly affected by subjective factors such as human visual judgment, making it difficult to guarantee measurement accuracy.

[0004] Another method of measuring with a trapezoidal ruler also has obvious drawbacks: when the measured value is small, the measurement accuracy is poor, or even the measurement cannot be completed; during the measurement process, forcibly inserting the trapezoidal ruler can easily interfere with the measured value, leading to data deviation; and this method is also affected by subjective factors such as the force and angle of human operation, making it difficult to meet the requirements of high-precision measurement.

[0005] Therefore, there is an urgent need to develop a rail welding tip measuring device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a rail welding tip measuring device to improve the speed and automation of rail welding tip measurement, shorten the measurement time, reduce the interference of human operation on the measurement results, improve the measurement accuracy, and ensure that the rail is accurately aligned within the error range of the two-dimensional coordinate system, thereby improving the rail welding quality, reducing construction costs, and meeting the needs of railway construction and maintenance for high-quality rail welding.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A rail welding tip measuring device includes a straight ruler and at least three dial indicators, wherein each of the two ends and the midpoint of the straight ruler is provided with a dial indicator, and the measuring end of each dial indicator is protruding from the working side of the straight ruler and is at the same distance from the working side of the straight ruler.

[0009] In some alternative embodiments, the dial indicator located at the midpoint of the ruler is tunably connected to the ruler along the length of the ruler.

[0010] In some optional embodiments, the working side of the ruler has a length of 1000 mm, and the non-working side has a length greater than the working side.

[0011] In some alternative embodiments, the working sides of the straightedge are chamfered.

[0012] In some alternative embodiments, the chamfer is a rounded chamfer.

[0013] In some alternative embodiments, the working side of the straightedge is machined with a polished surface.

[0014] In some alternative embodiments, the non-working side of the ruler is provided with a handle.

[0015] In some optional embodiments, the dial indicator is a digital dial indicator with a range of 0 to 25 mm.

[0016] In some optional embodiments, the rail welding tip measuring device further includes a zeroing device with a flattened zeroing surface.

[0017] In some alternative embodiments, the rail welding tip measuring device further includes a storage box having storage slots adapted to the shape of a straightedge and at least three dial indicators, and the inner walls of the storage slots being covered with a buffer layer.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a rail welding tip measuring device, including a straight ruler and at least three dial indicators. Each end and midpoint of the straight ruler is equipped with a dial indicator, and the measuring end of each dial indicator protrudes from the working side of the straight ruler at the same distance. By using this rail welding tip measuring device to measure the rail welding tips, the dial indicators can intuitively and accurately display the straightness deviation of each measuring point on the rail, thereby improving the speed and automation of rail welding tip measurement and shortening the measurement time. Simultaneously, it can reduce the interference of human operation on the measurement results, improve measurement accuracy, and ensure precise alignment of the rail within the error range of the two-dimensional coordinate system, thereby improving the quality of rail welding, reducing construction costs, and meeting the needs of railway construction and maintenance for high-quality rail welding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the rail welding tip measuring device of this utility model;

[0021] Figure 2This is a schematic diagram of the rail top surface straightness measurement according to this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the rail top surface straightness measurement according to this utility model. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the flatness measurement of the convex working surface of the rail according to this utility model;

[0024] Figure 5 This is a top view of the zeroing device of this utility model.

[0025] In the picture:

[0026] 100. Steel rails;

[0027] 1. Straight ruler; 11. Working side; 12. Chamfer; 2. Dial indicator; 3. Zeroing device; 31. Zeroing surface; 4. Handle. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] like Figures 1-4 As shown, this embodiment provides a rail welding tip measuring device, including a straight ruler 1 and at least three dial indicators 2. Each end and the middle point of the straight ruler 1 are provided with a dial indicator 2. The measuring end of each dial indicator 2 protrudes from the working side 11 of the straight ruler 1 and is at the same distance from the working side 11 of the straight ruler 1.

[0033] For measuring the weld tips of rail 100, the straightness of the top and working surface of rail 100 needs to be measured separately. First, the working side 11 of the straightedge 1 is placed against the longitudinal centerline of the top surface of rail 100, and the midpoint of the working side 11 is aligned with the centerline of the weld. Second, as... Figure 2 As shown, place one side of the straightedge 1 against the rail 100, observe the reading of the dial indicator 2 on the other side, and adjust the position of the rail 100 until the reading reaches 0.1mm to 0.4mm; or, as shown... Figure 3 As shown, place the midpoint of the straightedge 1 against the rail 100 and observe the readings of the dial gauges 2 at both ends. Adjust the position of the rail 100 until both readings reach 0.05mm to 0.2mm. Depending on the operator's habits, they can freely choose to place one side of the straightedge 1 against the rail 100 or the midpoint of the straightedge 1 against the rail 100 for measurement. Next, place the working side 11 of the straightedge 1 against the longitudinal line 16mm from the top surface of the rail 100 on the working surface, aligning the midpoint of the working side 11 with the centerline of the weld. Then, as... Figure 4 As shown, when the working surface of the rail 100 is a convex working surface, place both ends of the straightedge 1 against the rail 100, observe the reading of the dial indicator 2 at the midpoint, and adjust the position of the rail 100 until the reading reaches -0.3mm to 0mm; when the working surface of the rail 100 is a concave working surface, place one side of the straightedge 1 against the rail 100, observe the reading of the dial indicator 2 on the other side, and adjust the position of the rail 100 until the reading reaches 0 to 0.3mm; or, place the midpoint of the straightedge 1 against the rail 100, observe the readings of the dial indicators 2 at both ends, and adjust the position of the rail 100 until both readings reach 0 to 0.15mm. Similarly, according to the operator's own operating habits, they can freely choose to place one side of the straightedge 1 against the rail 100 or place the midpoint of the straightedge 1 against the rail 100 for measurement; finally, repeat the above steps until the flatness of the top surface and the flatness of the working surface of the rail 100 meet the requirements.

[0034] By using the rail welding tip measuring device of this embodiment to measure the welding tips of rail 100, the dial indicator 2 can intuitively and accurately display the straightness deviation of each measuring point of rail 100, thereby improving the speed and automation of rail 100 welding tip measurement and shortening the measurement time; at the same time, it can reduce the interference of human operation on the measurement results, improve the measurement accuracy, and ensure that rail 100 is accurately aligned within the error range of the two-dimensional coordinate system, thereby improving the welding quality of rail 100, reducing construction costs, and meeting the needs of railway construction and maintenance for high-quality rail 100 welding.

[0035] In some alternative embodiments, a dial indicator 2 located at the midpoint of the straightedge 1 is tunably connected to the straightedge 1 along the length of the straightedge 1.

[0036] During pre-welding measurement, there is a gap in the weld seam of rail 100. The midpoint of straightedge 1 is directly opposite the gap in the weld seam of rail 100. The measuring end of dial indicator 2, located at the midpoint of straightedge 1, is in the gap and cannot be measured. By adjusting the position of dial indicator 2 along the length of straightedge 1, its measuring end is misaligned with the gap in the weld seam of rail 100, so that the measuring end contacts one side of rail 100, which can better reflect the straightness deviation of the measuring point.

[0037] In this embodiment, a slide rail extending along its length is provided at the midpoint of the straight ruler 1, and a slider that slides in cooperation with the slide rail is provided on the dial indicator 2 located at the midpoint of the rail 100.

[0038] In other alternative embodiments, at least two mounting positions are provided at the midpoint of the straightedge 1 along its length direction, and the dial indicator 2 located at the midpoint of the rail 100 can be engaged with any of the mounting positions to realize the position adjustment of the dial indicator 2 along the length direction of the straightedge 1, which is not limited here.

[0039] In some optional embodiments, the working side 11 of the straightedge 1 is 1000mm long, which can form measuring points at the midpoint of the weld of the rail 100 and 500mm on both sides, meeting the measurement requirements of the national railway industry standard.

[0040] Among them, the non-working side is opposite to the working side 11, and the length of the non-working side is greater than that of the working side 11. This allows for the installation of the dial indicator 2 without affecting the measurement effect of the working side 11 of the straightedge 1. This ensures that the two ends of the dial indicator 2 at both ends of the straightedge 1 are located 500mm on both sides of the midpoint of the straightedge 1, so that the 500mm on both sides of the midpoint of the weld of the rail 100 can become the measuring point.

[0041] like Figure 1As shown, in some optional embodiments, the working side 11 of the straightedge 1 is chamfered at both ends to avoid the rail 100 and prevent the two ends of the straightedge 1 from interfering with the part 500mm away from the midpoint of the weld of the rail 100, so as to ensure the accuracy of the measurement results.

[0042] In some alternative embodiments, chamfer 12 is a rounded chamfer, which makes the appearance of the straightedge 1 smooth, avoids safety hazards caused by corners, and can avoid damage to the rail 100.

[0043] In some optional embodiments, the working side 11 of the straightedge 1 is machined with a polished surface, which can reduce the surface roughness of the working side 11, so that the straightedge 1 fits more closely with the surface of the workpiece being measured, avoiding gaps or local high points caused by surface roughness, thereby ensuring the accuracy of the measurement reference.

[0044] In some alternative embodiments, the non-working side of the ruler 1 is provided with a handle 4 so that the operator can hold the handle 4 to make the ruler 1 fit against the rail 100, thereby improving the operating experience and convenience.

[0045] In some optional embodiments, the dial indicator 2 is a digital dial indicator with a range of 0-25mm, which is compatible with the order of magnitude of the straightness error of rail 100 and fits the rail 100 straightness detection scenario. The digital dial indicator can help workers to observe the straightness deviation of rail 100 more intuitively, accurately and quickly and adjust the position of rail 100, which is conducive to improving work efficiency.

[0046] like Figure 5 As shown, in some optional embodiments, the rail welding tip measuring device also includes a zeroing device 3. The zeroing surface 31 of the zeroing device 3 is planed flat. Before measurement, the working side 11 of the straightedge 1 is placed against the zeroing surface 31, and the dial of each dial indicator 2 is zeroed to ensure the accuracy and intuitiveness of the rail 100 straightness detection.

[0047] In some optional embodiments, the rail welding tip measuring device also includes a storage box with storage slots adapted to the shape of the straightedge 1 and at least three dial indicators 2, and the inner wall of the storage slots is covered with a buffer layer to protect the dial indicators 2 from collisions and ensure the measurement accuracy and reliability of the rail welding tip measuring device.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rail welding tip measuring device, characterized in that, It includes a straight ruler (1) and at least three dial indicators (2), wherein each of the two ends and the midpoint of the straight ruler (1) is provided with a dial indicator (2), and the measuring end of each dial indicator (2) is protruding from the working side (11) of the straight ruler (1) and is at the same distance from the working side (11) of the straight ruler (1).

2. The rail welding tip measuring device according to claim 1, characterized in that, The dial indicator (2), located at the midpoint of the straight ruler (1), is tunably connected to the straight ruler (1) along its length.

3. The rail welding tip measuring device according to claim 1, characterized in that, The working side (11) of the straightedge (1) has a length of 1000mm, and the non-working side has a length greater than that of the working side (11).

4. The rail welding tip measuring device according to claim 3, characterized in that, The working side (11) of the straight ruler (1) has chamfers (12) at both ends.

5. The rail welding tip measuring device according to claim 4, characterized in that, The chamfer (12) is a rounded chamfer.

6. The rail welding tip measuring device according to claim 1, characterized in that, The working side (11) of the straight ruler (1) is machined with a polished surface.

7. The rail welding tip measuring device according to claim 1, characterized in that, The non-working side of the straight ruler (1) is provided with a handle (4).

8. The rail welding tip measuring device according to claim 1, characterized in that, The dial indicator (2) is a digital dial indicator (2) with a range of 0-25 mm.

9. The rail welding tip measuring device according to claim 1, characterized in that, The rail welding tip measuring device also includes a zeroing device (3), and the zeroing surface (31) of the zeroing device (3) is planed flat.

10. The rail welding tip measuring device according to any one of claims 1 to 9, characterized in that, The rail welding tip measuring device also includes a storage box, which has storage slots that are adapted to the shape of a straight ruler (1) and at least three dial indicators (2), and the inner wall of the storage slots is covered with a buffer layer.

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