A rotating device for axially floating and radially preloading and fixing a rotating body where an inertial element is located

Abstract

Provide a device for axially floating, radially pre-tightening and fixing the rotating body where the inertial element is located, which has a non-rotating body and a rotating body, the inertial element is installed in the rotating body, the lower end of the rotating body is supported on the non-rotating body through a lower bearing, and The lower bearing is fixed in the lower bearing seat, and the upper end of the rotating body is supported on the non-rotating body through the upper bearing, and the rotating body is floatingly connected in the upper bearing seat so that the rotating body and the non-rotating body can be displaced mutually when heated or cooled, expanding or contracting, At the same time, a compensating device for constraining the radial gap between the upper bearing and the rotating body is provided on the inner hole wall of the upper bearing seat. Adopting this technical scheme can accurately adjust the axial gap between the rotating body and the non-rotating body under the condition of great changes in the ambient temperature, and can also eliminate the radial gap between the rotating body and the bearing, the outer ring of the bearing and the non-rotating body. To the gap, the rotating body rotates smoothly in the non-rotating body, the expected error rotation modulation result is obtained, and the effective precision of the inertial element is improved.

Description

technical field [0001] The invention belongs to the technical field of inertial measurement, and in particular relates to a device for axially floating and radially pre-tightening and fixing a rotating body where an inertial element is located. Background technique [0002] In order to improve the effective precision of the inertial element, under normal circumstances, the error rotation modulation technology can be used to make the rotating body where the inertial element is located rotate at a uniform speed, and better results can be obtained. However, due to the difference in materials, tolerances and other factors between the rotating body and the non-rotating body, the gap between the rotating body and the non-rotating body will change differently as the temperature changes, which will greatly reduce the rotation of the rotating body. stability (when the gap is small, there is a possibility of jamming and stalling, when the gap is large, the rotating body will swing), r...

AI Technical Summary

Problems solved by technology

However, due to the difference in materials, tolerances and other factors between the rotating body and the non-rotating body, the gap between the rotating body and the non-rotating body will change differently as the temperature changes, which will greatly reduce the rotation of the rotating body. stability (when the gap is small, there is a possibility of jamming and stalling, when the gap is large, the rotating body will swing), reduce the effective accuracy of the inertial components, and cannot make the error rotation modulation technology play its due role, so there is Necessary to make improvements

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