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High-Speed Roller Cradle for High-Volume Conveying

August 14, 2013
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The EVO high-speed impact cradle is designed to reduce roller and frame damage from heavy conveyor loading conditions in mining, coal handling, aggregates, and other applications involving dense materials and/or high volumes. The rugged roller cradle is engineered to withstand brutal operating conditions, reducing roller failures, and service requirements. The new cradle used Martin Engineering’s Trac-mount technology to slide in and out easily for maintenance. The modular components are light enough to be removed by hand, without using a crane or other equipment to handle them. The new cradle design only requires one person to change the rollers when the time comes. The biggest problem solved is the downtime.  In the past, when customers have needed to change rollers or frames, they had to shut down the conveyor for an extended amount of time. Old style frames can be difficult to remove, requiring that maintenance personnel pull the arms down, then jack up the assembly to pull it out. The load zone design uses an elastomer bar suspension system that absorbs and distributes the material load being transferred, greatly reducing the stress on the idlers’ rolling components and support structure. One patent-pending design innovation is the use of connecting brackets near the top of the idler frame to hold the three rollers together. These special brackets are designed to allow multiple modular cradles to be tied together, so that the idlers throughout the entire load zone work together as a system.
Martin Engineering Co., Neponset, IL 800-544-2947 www.martin-eng.com

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