HCQ GPS navigator: Easy documentation of compaction
"HCQ" stands for "HAMM Compaction Quality" and comprises a wide array of different measurement and documentation tools. The GPS navigator was used in the Tyrol. This system basically consists of three modules: A receiver picks up signals from multiple GPS satellites and a differential satellite and determines the exact position of the roller independently of fixed reference stations. The second module – the compaction measurement system – is also very important. Using an acceleration sensor on the drum, the actual compaction is measured and transmitted to a rugged panel PC installed in the roller. This computer represents the heart of the system. It links the compaction measurement results with the position data at the time of the measurement and saves all of the relevant information. A "compaction map" is then displayed on the panel PC in the driver's cab. This map presents the measurement results to the operator using different colored markings, so the degree of compaction and number of completed passes are clearly visible.
Evaluation of the GPS navigator: Simple, fast and clear
Each time compaction of a layer was completed, engineer Hauser would read out the data using a USB stick and save it. The results are in the form of clear, unambiguous measured values and the interpretation process does not require any conversion or external software. "The HCQ GPS navigator delivers clear, traceable data that we can immediately interpret along with our customer. This simplifies the documentation process considerably," said the construction supervisor in praise of the system. In addition, operation on the actual roller is just as simple and convenient as the evaluation process. Using a user-friendly touchscreen, the operator or construction supervisor can enter the basic data. All the rest of the process is then handled automatically with no further operating steps required.
Hammtronic ensures dependability even under extreme environmental conditions
The compactor used to build the dam was equipped with the Hammtronic engine and machine management system. This ensures efficient usage of all of the machine's capabilities while monitoring the engine and vehicle functions, and especially the advance drive, vibration, oscillation and engine speed. The electronic engine management system ensures adaptation of the vibration system and driving speed to the current usage conditions. Of course, this contributes to ensuring a long lifespan for the machine itself. At an altitude of 2900 m, another benefit of Hammtronic became clear: Due to the lower air pressure, many of the construction machines suffered during sustained operation and could not deliver the necessary performance. On the other hand, Hammtronic responded to the environmental factors and adjusted the machine parameters accordingly. This ensured trouble-free operation even under these unusual operating conditions. Construction supervisor Ing. Alexander Hauser confirmed this: "During the construction period, some of the machines kept us busy with engine failures. But the equipment from the Wirtgen Group ran continuously despite the high altitude."