Means for supporting idler rollers in conveyor systems

Details Means for supporting idler rollers in conveyor systems Means for supporting idler rollers in conveyor systems

B - Operations, Transporting

65

G

198/80

B65G 39/00 (2006.01) B65G 39/12 (2006.01) B65G 43/02 (2006.01)

Patent

CA 1175381

ABSTRACT "IMPROVED MEANS FOR SUPPORTING IDLER ROLLERS IN CONVEYOR SYSTEMS" Disclosed is a conveyor system including a plurality of idler rollers for supporting the return leg of an endless conveyor belt and extending across the full width thereof. Said rollers being carried for free rotation about axle shafts having end portions projecting outwardly of the rollers and located in support means within said frame. Each axle shaft support means being attached to the frame and including a bracket having formed therein a downwardly extending locating slot dimensioned to receive and retain the axle shaft. A reaction member extending outwardly of the frame provides a reaction surface parallel to the axle shaft for co-operation with a flat portion formed in the surface of a disc cam, eccentrically mounted on the end of the axle shaft, to resist rotation of the shaft when the shaft is engaged in the said slot. The flat portion forms a cord of the disc and is bisected by a line passing through the axis of rotation and the centre of the disc. Forced rotation of the cam by the shaft, for example through seizure of the roller bearing, causes the shaft to. move along said slot and to drop out of the open end thereof, whereby the idler roller moves out of contact with the conveyor belt and ceases to provide support therefor. - 1 -

396615

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