Modular centrifugal pendulum-type dynamic vibration absorber experiment table

Abstract

The invention discloses a modular centrifugal pendulum-type dynamic vibration absorber experiment table, and the experiment table comprises an excitation source, a adapter module and at least one free combination module, which are connected in sequence. The excitation source comprises an excitation source base; a rotating seat which is movably arranged on the excitation source base in an angle-adjustable mode; and a motor which is fixedly arranged on the rotating seat through a motor support. The adapter module comprises an adapter seat; a bracket which is fixed on the adapter seat through a bolt; a sliding bearing which is fixed at the upper end of the bracket; and an adapter shaft which is in sliding fit with the sliding bearing, wherein one end of the adapter shaft is in driving connection with an output shaft of the motor through a cross shaft universal coupling. The free combination module comprises a combination base, two supports and a spring-quality system with the adjustable inherent frequency. The experiment table is simple in structure, small in occupied space, easy and convenient to disassemble and assemble, convenient to transform and maintain and beneficial to deep research on the working effect of a centrifugal pendulum-type dynamic vibration absorber and the like.

Description

technical field [0001] The invention relates to a modularized centrifugal pendulum type dynamic vibration absorber test bench, in particular to an experimental bench for studying the dynamic characteristics of the centrifugal pendulum type dynamic vibration absorber. Background technique [0002] As people pay attention to the ride comfort of automobiles, the NVH performance represented by noise, vibration and sound roughness has become one of the important indicators of automobile competitiveness. Due to the inherent defects in the working mode of the engine, the output of the crankshaft has obvious speed fluctuations. For the inline four-cylinder engine, the second-order excitation is the main excitation. This is detrimental to the service life, reliability, etc. of the drive train and engine front attachments. [0003] In general, the transmission of engine excitation to the driveline is reduced by torsional dampers in the driveline. However, due to the need for energy ...

AI Technical Summary

Problems solved by technology

However, due to the need for energy saving and emission reduction and the restrictions of laws and regulations, the engine is developing in the direction of miniaturization and supercharging, resulting in increased speed fluctuations

This makes the traditional torsional damper and the new dual-mass flywheel unable to effectively limit the speed fluctuation within a reasonable range

The centrifugal pendulum dynamic absorber, which was first applied in aviation, was introduced into the automobile drive train to reduce the torsional vibration of the drive train, but there is still a lack of research and verification of centrifugal pendulum dynamic absorber with simple structure, convenient and reliable operation. The influence of various parameters on its vibration damping effect

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