Vibration exciter esp. for compressor shakers - has idle running at constant speed still allowing reloading

摘要

The imbalanced mass used to produce the vibrations comprises one or more imbalanced bodies (15, 16). The weights of the bodies are measured and positioned on the axis of rotation according to wt. so that in at least one adjustable position the centrifugal force which results from the effective imbalanced mass formed from all the imbalanced bodies is equal or almost equal to nil. When the imbalanced bodies are in one position to cancel out the imbalanced forces the exciter no longer produces any vibrations and it rotates like a substantially balanced device so that under these conditions the exciter can run between compacting processes without impeding the supply of new material and the removal of the compacted slab.