Magnetic suspension falling body cabin system and free falling body type absolute gravimeter

Abstract

The invention relates to a magnetic suspension falling body cabin system and a free falling body type absolute gravimeter of the falling body cabin system. The falling body cabin system comprises a vacuum chamber and a falling body cabin arranged in the vacuum chamber, wherein the falling body cabin comprises a top tray, a bottom tray, a guide rail, a support rail, a bracket system and a falling body mass block; the guide rail and the support rail are arranged between the top tray and the bottom tray; at least one end of the guide rail is provided with a driving electromagnetic valve, and the bottom of the falling body bay is provided with a sensor; a sliding sleeve is sheathed on the guide rail, the driving electromagnetic valve is arranged in the sliding sleeve, and the bracket system is installed on the guide rail in a sliding mode through the sliding sleeve; the bottom wall of the top tray is provided with a guide locating slot in the movement direction of the bracket system, and the upper part of the guide locating slot is provided with an electromagnetic collet; the falling body mass block is separably arranged on the bracket system; the top of the falling body mass block is provided with a guide bar which can extends into the guide locating slot; and the falling body mass block is provided with a corner cube. The magnetic force in the electrified electromagnetic valve is used as the driving force of the bracket system, and the magnitude of current is controlled to control the movement of the bracket system. Thus, the invention has the advantages of high precision and low failure rate.

Description

technical field [0001] The invention relates to a free-falling absolute gravimeter and its falling cabin system. Background technique [0002] The absolute gravimeter can obtain the absolute gravity value and its change of the observation point, and is widely used in geodesy, geophysics, geodynamics, seismology and other fields. According to the measurement data of the absolute gravimeter, the national gravity benchmark can be established, the relative gravimeter can be calibrated, the internal structure and motion information of the earth can be reversed, the crust and sea level changes can be monitored, and it is also used in military, aerospace, navigation, resource exploration and development projects The application field has a wide range of applications, so it is not only a basic scientific research instrument, but also an engineering application tool, and has always been valued by counterparts in various countries. At present, the internationally mature absolute grav...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a magnetic levitation fall cabin system, which solves the problems of large mechanical wear and high failure rate caused by the mechanical drive of the existing free-fall absolute gravimeter fall mass release and lifting system

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