Cranes & Lifting, Industry News, Technology

Autolevelling versus side slope deration

The issue of derating the cranes lift capacity when operating on uneven surfaces led DRA Group to develop the Autoleveller System for its high capacity Humma 55T pick and carry crane.

The issue of derating the cranes lift capacity when operating on uneven surfaces led DRA Group to develop the Autoleveller System for its high capacity Humma 55T pick and carry crane.

The patented Autolevelling technology has been developed by DRA and can be fitted to all models of Humma.

“The system ensures the chassis is kept horizontal when the crane is operating on uneven surfaces of up to 5°, without having to reduce the cranes SWL,” DRA Group Operations Director Peter Dalla Riva.

“Slope deration is not necessary, although all Humma models have a dynamic load chart fitted with slope deration.

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“I read with interest the recent CICA article discussing pick and carry slide slope derations. In my opinion, DRA’s Autolevelling system, which is built into our Humma 55T crane makes slope derate look like old technology.”

“When the Humma is set on Autolevelling, it automatically keeps the chassis level even when operating on slopes and on uneven surfaces. This removes the need for slope deration and the possibility of operator error. Autolevelling is managed by the machine operating system featured in Humma 55, and this is the reason it has been classed as the safest pick & carry crane available.” he said.

“DRA Group continues to invest in the very latest technology and Autolevelling along with the introduction of robotic crane manufacture, are innovations designed to see Humma remain ahead of the competition as we continue to develop the safest pick & carry crane available,” Dalla Riva said.

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