CN216717237U - Steel rail head contour checking template - Google Patents
Steel rail head contour checking template Download PDFInfo
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- CN216717237U CN216717237U CN202122918466.8U CN202122918466U CN216717237U CN 216717237 U CN216717237 U CN 216717237U CN 202122918466 U CN202122918466 U CN 202122918466U CN 216717237 U CN216717237 U CN 216717237U
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- curve
- steel rail
- sample plate
- rail head
- arcs
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Abstract
The utility model relates to a steel rail head contour inspection sample plate, which comprises a sample plate I and a sample plate II, wherein the lower edges of two sides of the sample plate I are in a symmetrical curve I shape, and a curve I is formed by sequentially connecting all arcs of a steel rail standard section tread; the lower edge of one side of the second sample plate is in a curve shape, the lower edge of the other side of the second sample plate is in a curve shape, the second curve is formed by connecting the central arcs of the treads of the standard steel rail sections, and the third curve is formed by connecting the arcs of the treads of the standard steel rail sections, which are close to the side faces of the railheads. The advantages are that: the utility model improves the speed and accuracy of the quality inspector for inspecting the rail head outline of the steel rail, improves the production efficiency and avoids objections caused by the rail head outline of the steel rail.
Description
Technical Field
The utility model belongs to the field of steel rail quality detection, and particularly relates to a steel rail head contour inspection sample plate.
Background
With the rapid development of the Chinese railway industry, the requirement of a user on the matching degree of the section specification and the standard section of the steel rail is higher and higher, wherein as a most main running surface, the rail head outline of the steel rail has no inspection sample plate in the Chinese railway industry standard TB/T2344, the qualification and the non-qualification of the rail head outline of the steel rail have no convenient measurement means, and the inspection speed and the inspection accuracy of a quality inspector are seriously influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the steel rail head contour inspection sample plate which can quickly and accurately judge whether the steel rail head contour meets the standard requirements of the China railway industry and improve the steel rail specification inspection speed and accuracy.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a steel rail head contour inspection sample plate comprises a sample plate I and a sample plate II, wherein the lower edges of two sides of the sample plate I are in a symmetrical curve I shape, and a curve I is formed by sequentially connecting all arcs of a steel rail standard section tread; the lower edge of one side of the second sample plate is in a curve shape, the lower edge of the other side of the second sample plate is in a curve shape, the second curve is formed by connecting the central arcs of the treads of the standard steel rail sections, and the third curve is formed by connecting the arcs of the treads of the standard steel rail sections, which are close to the side faces of the railheads.
The curve is formed by sequentially connecting four circular arcs of R200, R60, R16 and R8.
And the second curve is formed by sequentially connecting two sections of circular arcs R200 and R60.
And the curve III is formed by sequentially connecting two sections of circular arcs R16 and R8.
Compared with the prior art, the utility model has the beneficial effects that:
the use of the steel rail head contour inspection sample plate improves the inspection speed and accuracy of a quality inspector on the steel rail head contour, improves the production efficiency and avoids objections caused by the steel rail head contour.
Drawings
Fig. 1 is a schematic structural diagram of a first sample plate.
Fig. 2 is a schematic structural diagram of a second sample plate.
Fig. 3 is a first state diagram of the inspection of the rail head profile of the second template.
Fig. 4 is a second state diagram of the second template for inspecting the rail head profile.
Fig. 5 is a state diagram one of the first template for inspecting the rail head profile.
Fig. 6 is a state diagram one of the first template for inspecting the rail head profile.
In the figure: 1-template one 2-template two 3-curve one 4-curve two 5-curve three.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1-6, a steel rail head contour inspection template comprises a first template and a second template, wherein the first template is used for simultaneously inspecting the goodness of fit between four sections of circular arcs and a standard section, the first template can be of a T-shaped plate structure, the lower edges of two sides of the first template are symmetrically arranged in a first curve shape, the first curve is formed by sequentially connecting all circular arcs of a steel rail standard section tread, the steel rail standard refers to the national common people's republic of China railway industry standard TB/T2344.1-2020, and the first part of the steel rail comprises: 43kg m-75kg m, FIG. A.760N rail type size; the technical conditions of the railway industry standard TB/T2344 of the people's republic of China, 201243 kg/m-75 kg/m steel rail ordering. Taking the 60N steel rail as an example, the curve I is formed by sequentially connecting four circular arcs of R200, R60, R16 and R8; the whole sample plate II is of an L-shaped plate structure, the lower part of the sample plate II is a holding part, the lower edge of one side of the upper part is of a curve two shape, the lower edge of the other side of the sample plate II is of a curve three shape, and the curve II is formed by connecting central arcs of a tread of a standard section of a steel rail, taking a 60N steel rail as an example and sequentially connecting two arcs of R200 and R60; and the curve III is formed by connecting circular arcs of the standard section tread of the steel rail, which are close to the side surface of the rail head, and is formed by sequentially connecting two sections of circular arcs R16 and R8 by taking the 60N steel rail as an example. The template is used for checking the contour goodness fit of the rail head tread and the height difference between the upper tread and the lower tread in sections: and aligning the rail head with the second sample plate, and measuring gaps between the second sample plate and the rails R200 and R60 by using a feeler gauge, wherein the gap value represents the height difference.
Aiming at the requirements of 60N steel rail head users: the deviation between the circular arcs of the steel rail treads R200 and R60 and the standard section is less than or equal to 0.35mm (high-speed rail), and the deviation between the circular arcs of the steel rail treads R16 and R8 and the standard section is less than or equal to 0.55mm (high-speed rail). The clearance gauge is matched, the half rail head is inspected by the sample plate each time, the clearance between the steel rail and the sample plate is measured by the clearance gauge during inspection, and the deviation between the R200 and R60 circular arcs and the standard section is less than or equal to 0.35mm (high-speed rail); the deviation between the R16 and R8 circular arcs and the standard section is less than or equal to 0.55mm (high-speed rail). And the second sample plate needs to be measured in four times, the size of a contact gap between the sample plate and the steel rail is measured by using a feeler gauge, the deviation between the R200 and R60 arcs and the standard section is less than or equal to 0.35mm (high-speed rail), and the deviation between the R16 and R8 arcs and the standard section is less than or equal to 0.55mm (high-speed rail).
Claims (4)
1. A steel rail head contour inspection sample plate is characterized by comprising a sample plate I and a sample plate II, wherein the lower edges of two sides of the sample plate I are in a shape of a symmetrically arranged curve I, and the curve I is formed by sequentially connecting all arcs of a steel rail standard section tread; the lower edge of one side of the second sample plate is in a curve shape, the lower edge of the other side of the second sample plate is in a curve shape, the second curve is formed by connecting the central arcs of the treads of the standard steel rail sections, and the third curve is formed by connecting the arcs of the treads of the standard steel rail sections, which are close to the side faces of the railheads.
2. A rail head profile inspection template as claimed in claim 1, wherein the curved line is formed by connecting four circular arcs R200, R60, R16 and R8 in sequence.
3. A rail head profile inspection template as claimed in claim 1, wherein the second curve is formed by connecting two circular arcs R200 and R60 in sequence.
4. A rail head profile inspection template as claimed in claim 1, wherein said curve three is formed by connecting two circular arcs R16 and R8 in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122918466.8U CN216717237U (en) | 2021-11-25 | 2021-11-25 | Steel rail head contour checking template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122918466.8U CN216717237U (en) | 2021-11-25 | 2021-11-25 | Steel rail head contour checking template |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216717237U true CN216717237U (en) | 2022-06-10 |
Family
ID=81880652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122918466.8U Active CN216717237U (en) | 2021-11-25 | 2021-11-25 | Steel rail head contour checking template |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216717237U (en) |
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2021
- 2021-11-25 CN CN202122918466.8U patent/CN216717237U/en active Active
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