High-precision double-wheel shaft double-vernier earth's axis precession demonstration and quantitative measurement experiment instrument

Abstract

The invention relates to a high-precision double-wheel shaft double-vernier earth's axis precession demonstration and quantitative measurement experiment instrument, which comprises a base, a motor, a cross beam, a rotating disk, a balance weight, wheel shafts, a cross beam support frame, a precession rotation head shaft, a right vernier scale vertical rod, a left vernier scale vertical rod, a main ruler and main ruler disc and a hollow support column. The motor is fixedly arranged at the right end of the cross beam; the rotating disk is fixedly arranged on a motor shaft; the balance weight is sleeved in a slide groove in the left end of the cross beam; outer edges of the two wheel shafts are clamped in a wheel shaft sleeve; the precession rotation head shaft is fixedly sleeved in inner edges of the two wheel shafts; the upper end of the precession rotation head shaft is fixedly provided with the cross beam support frame; the right vernier scale vertical rod and the left vernier scale vertical rod are connected at the right and left sides of the precession rotation head shaft respectively; the main ruler and the main ruler disc are sleeved in the middle portion of the hollow support column; the precession rotation head shaft is arranged at the upper end of the hollow support column; and a cross beam shaft of the cross beam is sleeved on a rotation shaft of the cross beam support frame. The beneficial effects of the experiment instrument are that the experiment instrument is reasonable in structure and good in experiment effect.

Description

technical field [0001] The patent of the present invention relates to an experimental instrument, in particular to an experimental instrument for demonstration and quantitative measurement of ground axis precession with high-precision double axles and double verniers. Background technique [0002] The patent No. ZL201220603296.2 is a utility model patent for "Ground axis precession principle demonstration and quantitative measurement experiment instrument". Spherical all-round movement realizes precession, but there is a problem of precession instability, and the precession effect is not good. The patent No. ZL201420053009.4 is a utility model patent for "wheel-shaft ground axis precession principle demonstration and quantitative measurement experiment instrument". There are two defects in the experiment of the instrument: first, due to the large mass of the upper end of the rotating shaft, when the precession instrument precesses to a certain position, it will stop precess...

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Problems solved by technology

[0002] The patent No. ZL201220603296.2 is a utility model patent for "Ground axis precession principle demonstration and quantitative measurement experiment instrument". Spherical all-round movement to achieve precession, there is a problem of precession instability, and the precession effect is not good

The patent No. ZL201420053009.4 is a utility model patent for "wheel-shaft ground axis precession principle demonstration and quantitative measurement experiment instrument". There are two defects in the experiment of the instrument: first, due to the large mass of the upper end of the rotating shaft, when the precession instrument precesses to a certain position, it will stop precessing suddenly, and the wheel shaft will often be stuck; second, due to the micro The ruler rod is fixed on the beam of the precession meter, and the beam is movable relative to the rotating shaft. In this way, when the motor starts to precess when the power is turned on or the power is turned off, the beam often shakes due to inertia, and the microscale fixed rod often appears larger. Swing, the relative position of the micro-ruler and the main ruler will change greatly, so that the measured beam precession angle will have a large error, and it is impossible to accurately demonstrate and quantitatively measure the exact angle of the beam (representing the earth's axis) precession

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