CN211370970U - Double-nut locking anti-drop connecting pair with spherical concave-convex surface - Google Patents
Double-nut locking anti-drop connecting pair with spherical concave-convex surface Download PDFInfo
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- CN211370970U CN211370970U CN201921615091.4U CN201921615091U CN211370970U CN 211370970 U CN211370970 U CN 211370970U CN 201921615091 U CN201921615091 U CN 201921615091U CN 211370970 U CN211370970 U CN 211370970U
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- spherical concave
- convex surface
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Abstract
The utility model belongs to the technical field of the fastener technique and specifically relates to a two nut locking anticreeps with spherical concavo-convex face are connected and are vice, including the bolt, first nut and second nut adopt threaded connection between first nut, second nut and the bolt, and the up end of first nut is equipped with establishes spherical concave surface structure, and the lower terminal surface of second nut is equipped with establishes spherical convex surface structure, and the up end of first nut closely laminates with the lower terminal surface of second nut, and spherical convex surface structure imbeds in the spherical concave surface structure. Compared with the prior art, the utility model, add spherical concave surface or spherical convex surface structure on the contact surface of two nuts, improved the locking ability of two nuts, practical anticreep function avoids two nut to connect vice emergence not hard up in the use, reduces because the not hard up metal contact net trouble that causes of fastener.
Description
Technical Field
The utility model belongs to the technical field of the fastener technique and specifically relates to a pair is connected to two nut locking anticreeps with spherical concave-convex surface.
Background
With the development of economy, the number of railway lines in China is increasing, and the safety of the railway lines including the continuous construction of rail transit in various cities becomes the central importance of railway operation. Among them, metal contact net is a very critical safety part. In a metal catenary failure, fastener loosening accounts for a significant proportion.
The connection types of metal contact nets are more, and double nuts are one of the metal contact nets. The anti-loosening reliability of the existing double-nut connection is insufficient, looseness is easy to generate, and the metal contact net can be possibly broken down.
Therefore, a double-nut locking anti-drop connecting pair with a spherical concave-convex surface is required to be designed, an anti-drop function can be provided, and looseness is avoided.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, providing a two nut locking anticreep with spherical concave-convex face and connecting vice, can provide the anticreep function, avoid taking place not hard up.
In order to achieve the purpose, the utility model relates to a pair is connected to two nut locking anticreeps with spherical concavo-convex face, including the bolt, first nut and second nut, its characterized in that: adopt threaded connection between first nut, second nut and the bolt, the up end of first nut is equipped with establishes spherical concave surface structure, and the lower terminal surface of second nut is equipped with establishes spherical convex surface structure, and the up end of first nut closely laminates with the lower terminal surface of second nut, and spherical convex surface structure imbeds in the spherical concave surface structure.
The second nut is a nut with an anti-tripping point.
The inner thread roots of the first nut and the second nut are provided with 30-degree inclined planes.
Compared with the prior art, the utility model, add spherical concave surface or spherical convex surface structure on the contact surface of two nuts, improved the locking ability of two nuts, practical anticreep function avoids two nut to connect vice emergence not hard up in the use, reduces because the not hard up metal contact net trouble that causes of fastener.
Drawings
Fig. 1 is a three-dimensional perspective view of the present invention.
Fig. 2 is a schematic view of the first nut of the present invention.
Fig. 3 is a schematic view of a second nut according to the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1, fig. 2 and fig. 3, the utility model relates to a two nut locking anticreeps with spherical concave and convex face are connected vice, including the bolt, first nut and second nut, adopt threaded connection between first nut 2, second nut 3 and the bolt 1, the up end of first nut 2 is equipped with establishes spherical concave surface structure 21, and the lower terminal surface of second nut 3 is equipped with establishes spherical convex surface structure 31, and the up end of first nut 2 closely laminates with the lower terminal surface of second nut 3, and spherical convex surface structure 31 imbeds in the spherical concave surface structure 21.
The utility model discloses in, first nut 2 mainly plays the effect that provides basic axial force, and all the other effects are the same with ordinary nut except that the spherical concave surface structure 21 of up end, and optional ordinary nut carries out the terminal surface and handles. The second nut 2 is provided with a pressure-release-preventing point, so that moment attenuation caused by material deformation is prevented after overload stress.
The utility model discloses when the installation, twist first nut 2 earlier on bolt 1, then twist second nut 3 again, the spherical concave surface structure 21 of 2 up end of first nut and the spherical convex surface structure 31 cooperation of terminal surface under the second nut 3 to provide the anticreep function.
The bottoms of the internal threads of the first nut 2 and the second nut 3 are provided with 30-degree inclined planes, and when the bolt 1 is screwed with the first nut 2 or the second nut 3, the tooth tip of the bolt tightly props against the 30-degree inclined planes, so that a larger locking force is generated, and the locking capacity of the connecting pair is further improved.
The utility model discloses add spherical concave surface or spherical convex surface structure on the contact surface of two nuts, improved two nuts' locking ability, practical anticreep function avoids two nut to connect vice emergence not hard up in the use, reduces because the not hard up metal contact net trouble that causes of fastener.
Claims (3)
1. The utility model provides a pair is connected to two nut locking anticreeps with spherical concave-convex face, includes the bolt, first nut and second nut, its characterized in that: adopt threaded connection between first nut (2), second nut (3) and bolt (1), the up end of first nut (2) is equipped with establishes spherical concave surface structure (21), and the lower terminal surface of second nut (3) is equipped with establishes spherical convex surface structure (31), and the up end of first nut (2) closely laminates with the lower terminal surface of second nut (3), and spherical convex surface structure (31) imbeds in spherical concave surface structure (21).
2. The double-nut locking anti-drop connecting pair with the spherical concave-convex surface as claimed in claim 1, is characterized in that: the second nut (3) is a nut with an anti-tripping point.
3. The double-nut locking anti-drop connecting pair with the spherical concave-convex surface as claimed in claim 1, is characterized in that: the thread bottoms of the internal threads of the first nut (2) and the second nut (3) are provided with 30-degree inclined planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921615091.4U CN211370970U (en) | 2019-09-25 | 2019-09-25 | Double-nut locking anti-drop connecting pair with spherical concave-convex surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921615091.4U CN211370970U (en) | 2019-09-25 | 2019-09-25 | Double-nut locking anti-drop connecting pair with spherical concave-convex surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211370970U true CN211370970U (en) | 2020-08-28 |
Family
ID=72152693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921615091.4U Active CN211370970U (en) | 2019-09-25 | 2019-09-25 | Double-nut locking anti-drop connecting pair with spherical concave-convex surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211370970U (en) |
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2019
- 2019-09-25 CN CN201921615091.4U patent/CN211370970U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |