Compact Equipment

NOV-DEC 2018

Compact Equipment is a magazine dedicated to equipment owners and operators of small, nimble, tool-carrying construction, landscape and ag equipment — such as skid steers, mini excavators, compact tractors, generators compressors and beyond.

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Page 18 of 51

S creener attachments for skid steers and other small carrier machines have seen an up- tick in popularity in recent years, due to their versatility and ability to increase onsite efficien- cy. In terms of their own versatility, these attachments are ideal for appli- cations such as composting, aerating, topsoil mixing, pipeline padding and more. In terms of versatility for the carrier machine, these attachments also increase fleet utilization because they quickly couple and uncouple for use onsite. Screening buckets for compact equipment run the gamut of vibrating-style, trommel-style, flip/ro- tating-style and screener crusher-style — the latter of which, as exemplified by the ALLU Transformer, can provide both screening and crushing/shred- ding functions for the operator. How It Works The screener crusher bucket can be designed specifically for use with mini excavators, small wheel loaders, back- hoes and skid steers. They comprise a bucket-style frame, with two spinning drums inside the frame at the base of the bucket. The drum design, with ap- propriate blade style and positioning, determines the material flow and the screening, crushing and shredding ac- tion. A two-way hydraulic system, con- nected to the carrier machine's own hydraulics, allows the drums to rotate in an upward direction (toward the back of the bucket) or in a downward direction. As the drums rotate upward (see Figure A), the shape of the upper frame enables material to begin cir- culating inside the bucket, allowing smaller material to escape between the blades and out the bottom of the bucket for efficient separation of dif- ferent fragment sizes. By reversing the drum rotation direction to a down- ward rotation (Figure B), the lower frame guides the material toward the gap between the lowest drum and the bottom of the bucket, creating a crushing effect. 19

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