Liebherr and Designwerk have developed the first fully electric truckmixers with 10m~3 and 12m~3 drums - the ETM 1005 and ETM 1205 respectively - on a five-axle, 680hp Futuricum chassis for quiet, emission-free ready-mixed concrete transport and delivery. Thanks to their large accumulator capacities, charging of the batteries is normally only necessary overnight, whilst energy recovery during braking or downhill driving further increases the range of the trucks and reduces operating costs. The drum drive developed by Liebherr and ZF consists of an efficient, low-maintenance electric motor and mixer gearbox arrangement. For the first time, both the truck and the truckmixer body are powered jointly by the traction battery, eliminating the need for costly power electronics components. The new Liebherr Generation 05 electrified body is said to offer further advantages: the compact electric drive for the mixing drum is flanged directly to the drum and its high efficiency ensures that power consumption for relieving the traction battery of the Futuricum truck remains low. It also eliminates the need for any hydraulic equipment, with no hose connections, no pump and, therefore, no risk of leakage.
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