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Sealing self-locking nut assembly and manufacturing method

A technology of self-locking nuts and production methods, which is applied in the direction of nuts, threaded fasteners, locking fasteners, etc., can solve the problems that cannot meet the needs of aircraft and submersibles, achieve good sealing, prevent loosening, and improve reliability Effect

Active Publication Date: 2014-10-29
GUIZHOU AEROSPACE PRECISION PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing common nuts cannot meet the above requirements of aircraft and submersibles

Method used

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  • Sealing self-locking nut assembly and manufacturing method
  • Sealing self-locking nut assembly and manufacturing method
  • Sealing self-locking nut assembly and manufacturing method

Examples

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Effect test

Embodiment

[0022] During specific implementation, the shape blank can be directly molded or forged by a bar with better plasticity, and then formed by mechanical finishing. Due to the use of advanced high-tech materials, the strength and plasticity of the material are excellent. After molding or forging, the crystal grains are not broken and are streamlined, that is, the grain streamlines are uniform, complete and highly oriented. The material is produced by molding or forging After cold work hardening, its tensile strength and fatigue strength are greatly enhanced, and shape memory alloys can also be used, molded at high temperatures and rapidly cooled to obtain blanks of any shape. In addition to the above-mentioned shape memory alloys, materials with strength greater than 1100MPa and excellent plasticity can also be used, such as high-strength forgings, high-temperature alloys, titanium alloys, high-strength steels, ultra-high-strength steels and some special steels. During specific...

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PUM

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Abstract

The invention discloses a sealing self-locking nut assembly and a manufacturing method. The sealing self-locking nut assembly comprises a sealing self-locking nut (1) and a sealing ring (2). The sealing self-locking nut (1) comprises a sealing sleeve (3), connecting flanges (4) are arranged at the bottom of the sealing sleeve (3), and a connecting hole (5) is formed in each connecting flange (4). Inner threads (6) are arranged in the sealing sleeve (3), a sealing groove is formed in the position of an opening of the sealing sleeve (3), and the sealing ring (2) is arranged in the sealing groove. By means of the sealing self-locking nut assembly, the weight of the nut can be reduced to be about 15% of original weight, and significant contributions are made to the loading capacity of an aircraft. The sealing self-locking nut assembly in the structure mode further has the good sealing performance and has the advantage of being resistant to the high pressure, the high temperature and corrosion. A preset tightening force moment value can be achieved by controlling the close-in amount of a close-in point, and the nut can be prevented from loosening under strong vibration. The work reliability of the aircraft and a submersible is improved. The sealing self-locking nut assembly and the manufacturing method are good in prospect and have the popularization value.

Description

technical field [0001] The invention relates to a sealed self-locking nut assembly and a manufacturing method, belonging to the technical field of fastening connection assemblies. Background technique [0002] In aircraft and submersibles, the number of fasteners of each type used can be as high as two to three million pieces, so strict control of the weight of fasteners in aircraft and submersibles is critical to the performance of aircraft and submersibles. Because fasteners in aircraft and submersibles often work in harsh environments with high pressure, high temperature, and strong vibration, they may also work in corrosive liquid or gas environments sometimes. Therefore, the requirements for nuts used in some special occasions in aircraft and submersibles are very high. The nut itself is required to be airtight, which can prevent harmful gases or fluids from corroding the thread pair; the nut is also required to have high reliability, not to loosen in strong vibration,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B37/14F16B39/28
Inventor 赵惠光先世兵曹丽芳
Owner GUIZHOU AEROSPACE PRECISION PRODS
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