Self-lubricating self-sealing ball socket structure based on polytetrafluoroethylene material

Abstract

The invention provides a self-lubricating self-sealing ball socket structure based on a polytetrafluoroethylene material. The self-lubricating self-sealing ball socket structure comprises a female ball body, a male ball body, a polytetrafluoroethylene lining, a male ball body heat insulating layer, a jet pipe diffusion section, a throat lining, a polytetrafluoroethylene lining rear gap, a polytetrafluoroethylene lining front gap and a polytetrafluoroethylene lining limiting step. According to the self-lubricating self-sealing ball socket structure, the self-lubricating performance and the self-sealing performance of the polytetrafluoroethylene material are utilized; meanwhile, the polytetrafluoroethylene material serves as a structural material and combined with the structural characteristics of a swing jet pipe of a ball socket, and the polytetrafluoroethylene lining of a spherical structure is designed to be installed on the portion, on the female ball side, of the contact spherical portion between the female ball body and the male ball body of the swing jet pipe of the ball socket; the structure is simple, the weight is low, and installation and operation are convenient; and the omni-axial swing requirements of the swing jet pipe of the ball socket are met, the dynamic sealing performance and the self-lubricating performance of the polytetrafluoroethylene spherical surface are guaranteed, the effect that the small-toque requirement of the swing jet pipe of the ball socket is met is guaranteed, and the self-lubricating self-sealing ball socket structure has the characteristics of being simple, convenient to use, reliable in work, small in swing torque, high in temperature adaptability and the like.

Description

technical field [0001] The invention relates to the technical field of thrust vectoring of solid rocket motors, in particular to a ball-and-socket structure applied to a ball-and-socket swing nozzle of a solid rocket motor. Background technique [0002] Ball-and-socket swinging nozzle technology is a key device applied to the thrust vectoring technology of solid rocket motors. The swinging nozzle deflects the thrust direction of the engine by controlling the nozzle to swing around the center of the nozzle to meet the large space maneuvering process of the aircraft. Small solid rockets The ball-and-socket nozzle of rocket engine has been applied in the field of aerospace technology due to its advantages of flexible thrust control, good structural stability, good quality consistency, and consistent high and low temperature performance; Spherical structure cooperates to control the thrust direction of the nozzle by controlling the azimuth of the movable part; because the ball-a...

AI Technical Summary

Problems solved by technology

[0004] In addition, because the contact load of the movable ball and socket surface of the ball and socket nozzle is generally high, the sprayed lubricating material is easy to fall off under heavy load, resulting in a high friction coefficient; and the use of grease or oil lubrication in the process of product storage and use Easy to volatilize and age, the above two methods have restricted its scope of use

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