Sealing and fixing device for testing aerospace gyro motor in high-temperature and low-temperature environment

Abstract

The invention relates to a sealing and fixing device for testing an aerospace gyro motor in a high-temperature and low-temperature environment. The sealing and fixing device comprises an end cover, ashell, a base and a motor mounting bracket; the end cover is fixedly connected with the upper end of the shell through threads; high and low temperature resistant silica glass is mounted in an upper glass interlayer mounting concave table of the end cover and a lower glass interlayer mounting concave table of the shell; an upper sealing ring and a lower sealing ring are embedded in an upper annular groove of the end cover and a lower annular groove of the shell respectively, and the upper sealing ring and the lower sealing ring are distributed to be tightly attached to the upper end face and the lower end face of the high-temperature-resistant and low-temperature-resistant silica glass; the shell is arranged above the base, the flange end of the shell is fixedly connected with the base through screws, and the annular boss at the lower end of the shell is in insertion fit with the annular groove in the upper end of the base in a clearance fit mode. The motor mounting bracket is arrangedin the annular groove in the upper end of the base, and the motor mounting bracket and the base are fixed through screws and positioned through positioning pins. Under the temperature environment within the range of -10 DEG C to +80 DEG C, a stable working state can be provided for the motor.

Description

Technical field[0001]The invention belongs to the technical field of production and testing of inertial devices, relates to the testing technology of aerospace gyro motors, and specifically relates to a sealing fixing device for testing aerospace gyro motors in high and low temperature environments.Background technique[0002]With the rise of my country’s comprehensive national strength and the vigorous development of the aerospace industry, the demand for high-precision inertial attitude sensors is becoming more and more urgent. Future satellites and spacecrafts featuring high resolution require higher precision for earth observation. The accuracy requirements far exceed the current technical level of domestic aerospace gyroscopes. For example, the optical cabin satellite system is required to be in orbit for 10 years and will capture about 40% of the universe with an accuracy not lower than the Hubble telescope. In addition to the long-life and high-reliability requirements for the ...

AI Technical Summary

Problems solved by technology

Among them, during the high and low temperature test process after the final assembly of the motor, due to the influence of the ambient temperature and humidity, if the test device is not handled properly, the motor bearing parts will often be rusted, ranging from rework to scrapping, which brings extreme pressure to production. big trouble

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