Eight tandem rollers with electric drive
An additional bauma innovation and world première are the eight electrified tandem rollers in the HD CompactLine series from HAMM, which is used across the world. The operation and the compaction parameters are identical to the corresponding diesel-driven machines. The completely battery-powered rollers can typically work for an entire typical work day with the Li-ion battery (capacity 23 kWh) without needing to be charged. The electrified models also include the world's first electric combination roller with oscillation. Thanks to the oscillation, it compacts particularly quietly with reduced vibration input into the environment and, thanks to the electric drive, is emission-free.
Tyre heating with diesel instead of gas
With innovative tyre heating for the pneumatic-tyre rollers, HAMM has further simplified the handling: In future, gas no longer has to be carried along as a second operating material. The new, easy-to-operate, diesel-driven power unit heats the tyres quickly and can therefore prevent the asphalt from adhering to the tyres. This means that high-quality compaction is possible, even in wind or cold weather. The burner is fed with diesel from the fuel tank. By supplying all functions via a single energy source, HAMM is simplifying the logistics and increasing the functional reliability.
New chip spreaders for the HX series
With the new line and disc spreaders for the rollers in the HX series, HAMM is offering practical solutions for spreading asphalt surface courses. The line spreaders create a uniform spreading pattern, whose spreading width is set precisely and maintained. The spreading quantity is regulated depending on the working speed and is itself constant when driving more quickly or when tilting. All spreaders can be conveniently installed and dismantled using a quick coupling. A bracket with three-point mounting bracket, a rear-view camera, a special lifting device and a lowering device round off the offering.
Smart Doc and Smart Compact: Digital assistants for earthworks and asphalt construction
Smart Doc shows in real-time how the compaction develops, and links the machine data to GNSS position data. The app uses this data to create compaction reports in PDF format and is therefore also suitable for self-monitoring. The Smart Compact compaction assistant is an absolute novelty and raises the quality of the compaction to a new level – on the one hand, by integrating local weather data into the evaluation. The second innovation: In addition to the physical properties of the asphalt, the system also evaluates its complex cooling behaviour. Using this, it continuously determines the optimal setting for each drum separately, i.e. whether compaction is carried out with vibration, with big or small amplitude, with oscillation or statically. The driver only enters which layer is to be compacted. Furthermore, the assistant can move the roller into ECO mode and therefore save fuel.