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Conveyor belt alignment and rip detection switch

01 October 2010

4B Braime Elevator Components has introduced the 4B Bulldog belt alignment and rip detection switch, an electro mechanical system that detects dangerous conveyor belt misalignment and belt tear damage. The switch will detect horizontal misalignment of belts when contact is made with the roller; the roller arm will be forced to pivot by the belt activating a switch at 15 degrees to trigger an alarm, and 30 degrees to trigger a shut down of the conveyor. The sensors are usually installed in pairs on opposite sides of the belt.

A flexible steel wire is set below the running conveyor belt, approximately 20-30mm attached by a rare earth magnet at each end. If the belt is ripped or damaged the wire is pulled away releasing the magnet connection which in turn will activate a switch.

The Bulldog’s robust design makes it suitable for use in heavy duty applications such as quarrying and mining. It is easy to install and doesn’t need calibrating. It is compatible with 4B’s CBS2 belt alignment monitor and the Watchdog Elite monitoring system, and has been approved for use in hazardous areas according to ATEX.

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