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Screw sealing structure

A technology of sealing structure and lead screw, which is applied in the direction of engine sealing, engine components, belts/chains/gears, etc., and can solve the problems of not fully considering the special requirements of aerospace applications for sealing

Active Publication Date: 2017-11-24
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing lead screw manufacturers have considered dust-proof requirements in their designs, but have not fully considered the special requirements for sealing in aerospace applications

Method used

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  • Screw sealing structure
  • Screw sealing structure
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Experimental program
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Embodiment Construction

[0017] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0018] Such as Figures 1 to 3 As shown, the sealing structure of the lead screw according to the present invention includes a nut 1, a lead screw 2 cooperating with the nut 1 and a sealing assembly, the sealing assembly is arranged between the nut 1 and the lead screw 2; The first sealing ring 3 has an internal thread 10 , and the threads of the internal thread 10 are filled into the raceway 9 of the lead screw 2 , that is, the threads are inserted or embedded in the raceway 9 of the lead screw 2 . In the present invention, a sealing assembly is arranged between the nut and the lead screw, and the threads of the internal thread 10 of the first sealing ring 3 of the seal assembly are filled in the raceway 9 of the lead screw 2, so that the nut 1 and the lead screw 2 Reliable sealing between grease to prevent oxidation and moisture absorption, improve the ...

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PUM

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Abstract

The invention provides a sealing structure of a lead screw. The sealing structure comprises a nut, the lead screw and a sealing component, wherein the lead screw is matched with the nut; the sealing component is positioned between the nut and the lead screw and comprises a first seal ring which is fixedly arranged on the nut; the first seal ring is provided with internal threads; screw teeth of the internal threads are filled in a rollaway of the lead screw. According to the sealing structure of the lead screw, the sealing component is arranged between the nut and the lead screw, and the screw teeth of the internal threads of the first seal ring of the sealing component are filled in the rollaway of the lead screw, so that reliable sealing between the nut and the lead screw is realized, oxidation and moisture absorption of lubricating grease are prevented, and the storage life of the lubricating grease is prolonged.

Description

technical field [0001] The invention relates to the field of transmission mechanisms, in particular to a sealing structure of a lead screw. Background technique [0002] There are storage problems in electromechanical servo mechanisms used in the field of machinery industry, especially in the long-term storage of electromechanical servo mechanisms in aerospace strategic and tactical weapons after batch production. [0003] In the existing technology, during the storage process of grease, due to the moisture absorption and oxidation with the atmosphere, the lubricating performance will be reduced. The ordinary storage time is generally about 2 to 6 months. After production, we face the problem of long-term storage. Generally, the storage time is as long as 10 to 20 years, and the replacement of lubricating grease and other related product maintenance work cannot be performed during this period. That is, the storage time of lubricating grease is required to be as long as 10 to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/16
CPCF16H25/2418
Inventor 崔佩娟刘亭赵国平王水铭
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS