Anti-rotation adjusting device for centrifugal tests

Abstract

The invention relates to the technical field of mechanics environment tests, in particular to an anti-rotation adjusting device for centrifugal tests. The anti-rotation adjusting device comprises an adjusting draw bar, a first connecting piece and a second connecting piece. The first connecting piece, the second connecting piece and the adjusting draw bar are coaxially arranged, the first connecting piece is fixedly connected with a stretching end of the adjusting draw bar, and the second connecting piece is rotatably connected with a fixed end of the adjusting draw bar. The anti-rotation adjusting device has the advantages that the stretching end of the adjusting draw bar can rotate and move relative to fixe sections of the adjusting draw bar, and accordingly the integral length of the adjusting draw bar can be changed; the second connecting piece is rotatably connected with the fixed end of the adjusting draw bar in centrifugal test procedures, accordingly, the stretching end and the fixed end of the adjusting draw bar can be prevented from being loosened due to excessive relative rotation, the adjusting draw bar always keeps in pre-tightened states in the centrifugal test procedures, rotation of test chambers due to mass eccentricity in the centrifugal test procedures can be prevented, test pieces and the test chambers always assuredly keep at stable positions, and the integral centrifugal tests can be assuredly safely and reliably carried out.

Description

technical field [0001] The invention relates to the technical field of mechanical environment tests, in particular to an anti-rotation adjusting device for centrifugal tests. Background technique [0002] Centrifugal test technology is widely used in aerospace, geotechnical, pharmaceutical and other industries. like figure 1 In the centrifuge shown, the test chamber is connected to the boom through a circular pin shaft, and the test chamber is fixed in position through a pin shaft expansion sleeve. During the centrifugal test, if the center of mass of the test piece deviates from the center plane of the pin shaft, during the rotation process, the test piece will drive the test chamber to rotate due to eccentricity. When the rotation torque is greater than the bearing moment of the expansion sleeve, the expansion sleeve will be damaged and the test chamber will be turned over. As a result, the test piece is damaged, and even the test chamber or centrifuge is damaged. Cont...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem of the rotation of the test chamber caused by the center of mass of the test piece deviating from the center plane of the pin shaft in the existing centrifugal test and the resulting damage to the pin shaft and related structural parts

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