Rotating device for fixing rotator where inertial element is located in axial floating manner and radial pre-tightening manner

Abstract

The invention provides a device for fixing a rotator where an inertial element is located in an axial floating manner and a radial pre-tightening manner. The device is provided with a non-rotating body and the rotator. The inertial element is mounted in the rotator. The lower end of the rotator is supported on the non-rotating body through a lower bearing, and the lower bearing is fixed in a lower bearing pedestal. The upper end of the rotator is supported on the non-rotating body through an upper bearing. The rotator is in floating connection in an upper bearing pedestal so that the rotator and the non-rotating body can generate mutual displacement when heated to expand or cooled to contract, and meanwhile a compensation device for restraining a radial clearance between the upper bearing and the rotator is arranged on the inner hole wall of the upper bearing pedestal. According to the technical scheme, under the condition that environment temperature changes are large, an axial clearance between the rotator and the non-rotating body can be accurately adjusted, meanwhile, radial clearances between the rotator and each bearing and between the outer ring of each bearing and the non-rotating body can be eliminated, so that the rotator smoothly rotates in the non-rotating body, an expected error rotation adjusting result is obtained, and the available accuracy 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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