High-precision zero-length spring temperature drift and long-term creep deformation detector

Abstract

The invention discloses a high-precision zero-length spring temperature drift and long-term creep deformation detector and relates to a performance detection technology of a geoscience apparatus core component. A structure of the detector is mainly characterized in that a zero setting mechanism is formed by a manual gear, a spiral drum and an elevating screw; the manual gear and the spiral drum form up and down connection and the elevating screw is arranged in the spiral drum; a top center hole of a spring shielding cylinder is provided with the spiral drum; in the spring shielding cylinder, from top to bottom, the elevating screw, an upper filament connection seat, an upper spring hang spring, a zero-length spring, a lower spring hang spring, a lower filament connection seat and a capacitance moving sheet are successively connected; in an up and down space of the capacitance moving sheet, first and second stator plate fixing columns are arranged on an inner wall of a support cylinder respectively, and upper and lower capacitance stator plates are connected to the first and second stator plate fixing columns respectively; an electronic system is connected to the capacitance moving sheet, the upper and lower capacitance stator plates and a constant temperature cylinder respectively. Measurement precision is high, a resolution ratio and a temperature are adjustable. The detector is suitable for zero-length spring temperature drift and long-term creep deformation detection.

Description

technical field [0001] The invention relates to performance detection technology of core components of geoscience instruments, in particular to a high-precision zero-length spring temperature drift and long-term creep detection instrument. Background technique [0002] In the field of geophysical exploration, gravity measurement is also an important method; gravity measurement data can also be used to study the earth's shape, internal structure, pole movement and the inhomogeneity of the earth's rotation speed; in addition, the precise calculation of satellite and missile orbits , also requires accurate data on the gravity field in the air. [0003] The zero-length spring is the core component of the high-precision relative gravimeter, and its performance directly affects the accuracy and performance of the relative gravimeter; the high-precision relative gravimeter is an important means to study solid tides and earthquake precursors. [0004] The zero-length spring technol...

AI Technical Summary

Problems solved by technology

However, due to the narrow application range of the zero-length spring, it is basically only used in some relative gravimeters and vibration isolation platforms, and has not been put into mass production at home and abroad.

Especially in China, only the Institute of Surveying and Geophysics of the Chinese Academy of Sciences, the Institute of Seismology of the China Earthquake Administration and other few research institutes have produced zero-length springs, and the zero-length springs produced are all used in relative gravimeters developed by themselves. sales, resulting in the lack of effective detection methods for the manufactured zero-length springs

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