Bar screen drive system

B - Operations – Transporting – 03 – B

Patent

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Details

B03B 5/48 (2006.01) B07B 1/12 (2006.01) B07B 1/42 (2006.01) D21B 1/02 (2006.01) D21D 5/16 (2006.01)

Patent

CA 2225695

Two racks of parallel screening bars each have rigid rack frames which extend beneath the bars. Two crankshafts with offset cam surfaces are mounted to the machine frame, and the rack frames are mounted by bearings to the crankshaft cam surfaces. The rack frame bearings are closely spaced beneath the bars to balance the system, while the rack frames provide a stiff oscillatory platform for the bars, permitting narrow gauge bars and increased screening area. The rack frames also include counterweights to dynamically balance the system.

Deux séries de barreaux parallèles d'une grille, chacune possédant des cadres de grille rigides qui s'étendent sous les barreaux. Deux vilebrequins comportant des surfaces de came déportées sont installés sur le bâti de la machine, et les cadres des grilles sont montés au moyen de paliers sur les surfaces des cames du vilebrequin. Les paliers du cadre des grilles sont peu espacés sous les barreaux pour équilibrer le système, tandis que les cadres des grilles constituent une plate-forme oscillante rigide pour les barreaux, ce qui permet d'utiliser des barreaux étroits et d'augmenter la surface de vide. Les cadres des grilles comprennent également des contre-poids pour équilibrer le système sur le plan dynamique.

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