Scraper blade tensioning device

Conveyors: power-driven – Conveyor having impinging fluid to feed – shift or discharge... – Having cleaning means

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B65G 4500

Patent

active

052014029

ABSTRACT:
A tensioning device for adjusting the contacting/cleaning force of a scraper blade on the surface of an endless conveyor belt is provided for use on a transverse, rotatable shaft supporting the scraper blades. The tensioning device of the present invention allows the support shaft to be rotated and locked in a position which is very close to its optimum cleaning position, thereby increasing the efficiency of the scraper assembly. The present tensioning device has a pair of collars, each with a sequence of axially-directed apertures which move into and out of registry with each other as the collars are rotated. The number of and minimum distance between apertures on the two collars is calculated to provide a minimum rotational adjustment distance which is less than the minimum distance between apertures on either collar.

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