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Bolt and self-locking nut assembly

A self-locking nut and bolt technology, used in nuts, bolts, threaded fasteners, etc., can solve problems such as short service life, difficult disassembly, and reduced connection strength, and achieve improved corrosion resistance, good corrosion resistance, and use. long life effect

Inactive Publication Date: 2020-09-29
河南航天精工制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the marine environment is relatively harsh, and most metal materials are difficult to withstand the erosion of seawater and the corrosion of the marine atmosphere. Many fasteners have been exposed to the marine environment for a long time, and the corrosion is serious, making it difficult to disassemble, the connection strength is reduced or even invalid, and the service life is short.

Method used

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  • Bolt and self-locking nut assembly
  • Bolt and self-locking nut assembly

Examples

Experimental program
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Effect test

specific Embodiment 1

[0023] The bolt and self-locking nut assembly of the present invention, such as Figure 1 to Figure 2 As shown, it includes a bolt 1 and a self-locking nut 3, the bolt 1 is provided with an external thread 2, and the self-locking nut is provided with an internal thread 5, so that the bolt 1 and the self-locking nut 3 can be screwed together. The opening of one end of the self-locking nut 3 along the axial direction is also provided with a closing structure 4. The closing structure 4 is a quadrilateral when viewed from the side, so that the bolt 1 and the self-locking nut 3 are screwed to a certain degree. Structure 4 The mutual extrusion and friction between the inner thread and the outer thread 2 of the bolt prevent the bolt 1 and the self-locking nut 3 from loosening, thereby achieving the self-locking effect. In other embodiments, the closing structure may be other structures, such as other non-circular structures such as an ellipse viewed from a side view.

[0024] In ord...

specific Embodiment 2

[0046] The difference from Example 1 is that the electroplated anti-corrosion layer is an electroplated zinc-nickel alloy layer, and the electroplated zinc-nickel alloy layer has better corrosion resistance, and is suitable for harsh industrial environments and severe marine environments.

specific Embodiment 3

[0048] The difference from Example 1 is that the lubricating layer includes a graphite layer and a cetyl alcohol layer, and the graphite layer also has a certain lubricating effect and has better chemical stability.

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Abstract

The invention relates to a bolt and self-locking nut assembly. The bolt and self-locking nut assembly comprises a bolt and a self-locking nut, wherein the surface of one of the bolt and the self-locking nut is coated with an anti-corrosion nanolayer, and the surface of the other is electroplated with an electroplating anti-corrosion layer, and a lubricating layer is arranged on the outer side of the electroplating anti-corrosion layer. The anti-corrosion nanolayer and the electroplating anti-corrosion layer can improve corrosion resistance of internal matrixes in the layers in the environment,and the lubricating layer outside the electroplating anti-corrosion layer can prevent the electroplating anti-corrosion layer in the lubricating layer from being damaged in a thread screwing processand stabilize mounting torque of the bolt and self-locking assembly; and according to the bolt and self-locking nut assembly, the self-locking nut and the bolt are reasonable in structure and have better corrosion resistance when matched for use in a using environment, and the service life is longer.

Description

technical field [0001] The invention relates to a bolt and self-locking nut assembly. Background technique [0002] With the development of marine resources and the development of marine industry, devices or equipment such as offshore platforms and ships are widely used. Fastener components such as bolts and self-locking nuts, as the most basic and common connection methods, are widely used in offshore platforms. It is used for mechanical connection with ships and other equipment. However, the marine environment is relatively harsh, and most metal materials are difficult to withstand the erosion of seawater and the corrosion of the marine atmosphere. Many fasteners have been exposed to the marine environment for a long time, and the corrosion is serious, making it difficult to disassemble, the connection strength is reduced or even invalid, and the service life is short. . Therefore, it is very necessary to provide a bolt and self-locking nut assembly with good corrosion r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B33/00F16N15/00
CPCF16B33/008F16N15/00
Inventor 虞玉华袁浩郭绕龙胡庆宽殷银银关悦娄起叶瑞
Owner 河南航天精工制造有限公司
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