Torsional pendulum type rotary inertia measuring device and method of air-floatation bearing support platform

Abstract

The invention discloses a torsional pendulum type rotary inertia measuring device of an air-floatation bearing support platform. The measuring device comprises a pedestal, a sleeve, a torsional pendulum assembly and a workbench; the torsional pendulum assembly comprises an air flotation bearing seat, an air flotation bearing, a torsion bar seat and a torsion bar, the air flotation bearing seat is connected to the top of the sleeve, a shaft sleeve of the air flotation bearing is connected with the air flotation bearing, the torsion bear seat is connected to the lower end of a main rotation shaft of the air flotation bearing,, and the upper end of the torsion bar is connected with the torsion bar seat; a torsion bar adapter is arranged on the pedestal, the middle position of the torsion bar adapter is provided with a square hole, and the lower end of the torsion bar is connected into the square hole in a clamped manner; and the workbench is connected to the upper end of the main rotation shaft of the air flotation bearing, the bottom of the workbench is provided with a pendulum pin, the top of the air flotation bearing seat is connected with a photoelectric tube seat, and a photoelectric tube is mounted on the photoelectric tube seat. The invention discloses a torsional pendulum type rotary inertia measuring method of the air-floatation bearing support platform. The device and method of the invention have the advantages of easy realization, low cost, high stability, measuring efficiency and precision and working reliability and low influence of air resistance.

Description

technical field [0001] The invention belongs to the technical field of measuring the moment of inertia of an object, and in particular relates to a measuring device and method for the moment of inertia of an air bearing supporting table-type torsion pendulum method. Background technique [0002] The moment of inertia is a fundamental physical quantity in mechanics, and its value depends on the shape of the object, the mass distribution and the position of the chosen axis of rotation. For a rigid body with simple geometric shape and uniform mass distribution, its moment of inertia relative to a certain rotation axis can be directly calculated by formula; but for an object with complex shape and uneven mass distribution, it can only be accurately measured through experiments. Moment of inertia. [0003] At present, the methods for measuring the moment of inertia of such objects mainly include single-line torsion pendulum method, three-line torsion pendulum method and desktop ...

AI Technical Summary

Problems solved by technology

However, in the prior art, there is also a lack of a table-top torsion method moment of inertia measuring device supported by an air bearing bearing with simple structure, reasonable design, convenient implementation, low cost, convenient operation, high work reliability, and strong practicability, and there is also a lack of corresponding High measurement efficiency and high precision measurement method of moment of inertia

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