Comprehensive test table for mass center and rotational inertia of large-tonnage product

Abstract

The invention provides a comprehensive test table for a mass center and a rotational inertia of a large-tonnage product. A lower table board is provided with an air flotation rotary system, a liftingsystem and an inclination auxiliary assembly. The air flotation rotary system and the lifting system are arranged on the front end and the rear end of the lower table board. The inclination auxiliaryassembly is arranged between the air flotation rotary system and the lifting system. The inclination auxiliary assembly can rotate forward in the direction towards the lifting system and rotate backward in the direction towards the air flotation rotary system. An upper table board is arranged above the lower table board. The air flotation rotary system includes an air flotation plate, a main shaft, a bipolar speed reduction device, a secondary planetary reduction gear and a servo motor I. The lower end of the main shaft is connected with the bipolar speed reduction device. The bipolar speed reduction device is connected with the secondary planetary reduction gear. The secondary planetary reduction gear is driven by the servo motor I. The lower end of the main shaft is provided with a rotary encoder. Therefore, the comprehensive test table with high bearing capacity, high precision and high stability is realized.

Description

technical field [0001] The invention belongs to the technical field of testing devices, and in particular relates to a comprehensive testing platform for testing the moment of inertia of the center of mass of various large satellites, spaceships, rocket engines, etc., and parts thereof. Background technique [0002] Quality characteristics are a series of mechanical characteristic parameters related to the mass of an object. Quality characteristics include mass, center of mass position, moment of inertia and product of inertia relative to a given coordinate system. These parameters are the basic inherent characteristic parameters that describe the mechanical properties of products. In the development of spacecraft, it is necessary to determine these parameters through experiments, and make necessary adjustments to these parameters according to the design requirements. [0003] The commonly used test method is that the product under test is installed on the turntable through...

AI Technical Summary

Problems solved by technology

[0004] There are many technical problems in the existing equipment for testing the moment of inertia of the center of mass. For example, some testing equipment cannot realize the test of large-tonnage products, and there are limitations; some testing equipment cannot realize fully automatic operation. For large-tonnage products such as airplanes and rocket engines, manual operation is very labor-intensive, which brings great inconvenience to the test; some test equipment is not designed properly, and the measurement accuracy is not high, etc. These technical problems are all Room for improvement

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