Bran finisher double-turned mass dampers, combined vibration reduction and isolation device and implementation method

Abstract

The invention relates to bran finisher double-turned mass dampers, a combined vibration reduction and isolation device and an implementation method. The double-turned mass damper consist of double-cantilever beams and turned mass blocks at two ends of the double-cantilever beams; the combined vibration reduction and isolation device consists of a vibration isolation system and a tuned mass damper; the vibration isolation system consists of rubber vibration isolators, a vibration isolation steel plate and a steel spring vibration isolator; the rubber vibration isolators are installed on the upper surface of the vibration isolation steel plate; the steel spring vibration isolator is arranged on the upper bottom surface of the vibration isolation steel plate; the rubber vibration isolators are arranged at four corners of a bran finisher; and the double-turned mass dampers are arranged at two ends of the vibration isolation steel plate and are symmetrically arranged by a central line of the vibration isolation steel plate. According to the combined vibration reduction and isolation method, the upper and lower vibration isolation structures (the rubber vibration isolators and the spring vibration isolator) cooperate with the turned mass damper, so that additional mass of the vibration isolation structure is reduced, and a good vibration isolation effect can be achieved due to the small mass of the vibration isolation structure.

Description

technical field [0001] The invention relates to a double-tuned mass damper for a bran thresher, a composite vibration reduction and isolation device and a realization method, and belongs to the technical field of equipment vibration isolation. Background technique [0002] The bran beating machine is one of the important equipment for the industrial production of the flour mill. The material is thrown to the buffer plate and the elastic sieve under the impact of the high-speed rotating adjustable beating plate. Separation in the middle, the rotational speed of the plate-making rotor is 1000-1100r / min, and the corresponding actual operating frequency is generally between 16Hz-19Hz. However, the first-order vertical natural frequency of the floor of an industrial factory is generally between 15Hz and 20Hz, which happens to overlap with the operating frequency range of the bran beater, and coupling vibration is very likely to occur, causing high-frequency vibration of the floor...

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