Self-balancing centrifugal vibration excitation device

Abstract

The invention discloses a self-balancing centrifugal vibration excitation device which comprises a vibration exciter I, a vibration exciter II and a self-balancing device. The vibration exciter I andthe vibration exciter II are arranged in parallel; the mounting directions of the vibration exciter I and the vibration exciter II are consistent; the vibration exciter I and the vibration exciter IIsynchronously and reversely move; the vibration exciter I acts on a test piece I through a transmission assembly I; the vibration exciter II acts on a test piece II through a transmission assembly II;and the self-balancing device is connected with the transmission assembly I and the transmission assembly II, transmits force equal in magnitude and opposite in direction under the action of centrifugal force, and is used for balancing the centrifugal force borne by the vibration exciter I and the vibration exciter II. According to the self-balancing centrifugal vibration excitation device, centrifugal force borne by the two vibration exciters is automatically balanced through the self-balancing device, so that the vibration exciters do not deviate from the working zero positions of the vibration exciters and can normally work all the time.

Description

technical field [0001] The invention belongs to the technical field of equipment mechanics environment test, and in particular relates to a self-balancing centrifugal vibration excitation device. Background technique [0002] Aircraft vibrates during flight and accelerates, decelerates, and turns. At this time, a vibration-acceleration compound environment is generated. For products on the aircraft, they are subjected to vibration-acceleration loads. This compound load has great impact on Therefore, it is necessary to carry out vibration-acceleration composite environmental tests to assess and verify the environmental adaptability of navigation instruments and other instruments. The relatively mature vibration-acceleration composite environmental test system is the vibration-centrifugal composite environmental test system, which uses a centrifuge to generate acceleration and a vibration table or exciter to generate broadband vibration. [0003] According to the survey, ther...

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Problems solved by technology

[0003] According to the survey, there are relatively few vibration-centrifugal composite environmental test systems at present. Only a few manufacturers in the world and in China can produce vibration-centrifugal composite test systems, but the centrifugal is generally a constant acceleration (the process of rising and falling is very slow, and the process of rising and falling is not fast. Included in the test assessment), cannot realize dynamic centrifugal simulation (simulate acceleration time history from 0)

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