Radius conveyor with magnetic bearing
Abstract:
A radius conveyor comprising a sideflexing conveyor belt and a touchless magnetic bearing at the inside of a turn. The conveyor belt has electrically conductive elements in a side edge. An array of permanent magnets along the conveyor's side rail at the inside of the turn produces a permanent magnetic field. As the conveyor belt is driven through the turn, the permanent magnet field induces currents in the electrically conductive material. The currents produce reaction magnetic fields opposed to the permanent magnetic field that result in a radially outward force pushing the conveyor belt away from frictional contact with the side rail. Alternatively, permanent magnets in the side edge of the belt and electrically conductive elements in the conveyor's side rail likewise provide a magnetic bearing.
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