Capital Equipment News May 2019

asphalt constructors a premium solution for challenging tasks. The split oscillating drum was seen in the DV+ 90i VS-OS at bauma 2019. There were also models with a split oscillating drum available for all other rollers in the DV+ series. Wear-resistant and maintenance-free All Hamm oscillation drums – both non-split and the new split models – are said to be extremely wear-resistant, as Hamm now uses an especially highly wear-resistant fine grain steel with even greater material strength for the drum shell than before. Hamm is thus significantly extending the operating life of modern oscillation drums. In addition, all Hamm oscillation drums are now completely maintenance- free. This has been made possible by using an optimised drive concept and innovative toothed belts. It is no longer necessary to change the toothed belt after 2 000 operating hours. Drivers and the surrounding environment also benefit from this solution – the oscillation drums are now significantly quieter when in operation thanks to the new toothed belts. Furthermore, Hamm oscillation rollers no longer require oil changes –

something which is still required for other systems on the market. Hamm Compaction Meter VIO Hamm brings together a wide range of modules for compaction measurement and documentation under the term HCQ (Hamm Compaction Quality). Claimed to be a world first, the Hamm Compaction Meter VIO is now joining this offering. For the first time, it is now possible to measure compaction in oscillation mode. The system is already available for the H 7i VIO and H 13i VIO compactors. A two-axle accelerometer and new, improved software form the core of the system. It provides the HMV value in accordance with a patented process. This corresponds to the compaction achieved and is shown on the display on the operator’s platform. For the roller driver, the application is very simple, as operation requires no additional entries. If the HMV value is recorded in the HCQ Navigator, the actual compaction can also be determined by using a calibration. Hamm VIO compactors can now document their passes with reliable measurements in a traceable way for all continuous dynamic compaction control applications. b

Hamm’s Compaction Meter VIO monitors results during oscillation compacting.

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