HCQ-Navigator Premium from Hamm: one system for all compaction needs
Nowadays, compactors have to do far more than just compact. Ideally, they should detect when and where exactly how much compaction work is still needed. That is precisely what the "HCQ-Navigator Premium" from Hamm offers. The key is that this is the only system in the world that can be used in both earthworks and asphalt applications, and it is being presented for the first time in this form at the Intermat trade show. It is sturdy in design, and is full of intelligent solutions. The HCQ-Navigator can be integrated in any modern Hamm compactor, from the basic compactor to a tandem roller and even static rollers and can also be retrofitted in most existing machines from Hamm.
One for all
While satellite-supported systems for Continuous Compaction Control (CCC) have become almost standard in earthworks, GPS and/or GNSS solutions (GNSS: Global Navigation Satellite Systems) are only gradually becoming established in asphalt construction. The basic requirements are similar for both applications, but there are differences in the measurement variables and the machine types.
Thanks to the HCQ-Navigator Premium, Hamm is the only manufacturer in the world to present a modular system at Intermat that works in both earthwork and asphalt compactors. The advantage: the essential components (panel PC and DGPS receiver) can be exchanged at will between various machines and projects. This reduces the level of investment considerably and also permits the successive integration of the system into the machine fleet. However, any customer who exclusively has earthwork or asphalt applications in its portfolio can, of course, still use the separate solutions with the designations HCQ-Navigator Earthworks and HCQ-Navigator Asphalt.
One principle for all compactors
The HCQ-Navigator works by the same principle for every application: during compacting, the system records various material and machine data. At the same time, a DGPS receiver determines the position of the compactor. The HCQ-Navigator correlates the process and positional information and presents it graphically on a panel PC in the operator's cabin.
It is also possible to network several compactors via WLAN. In this case, the system determines the current status of the compaction of the entire compactor network in real time; for example, the number of passes of all the compactors or the asphalt temperature, and displays the results on all the PCs.
Electronic type plate
The basis for all applications is standardised system software which can be used both for earthworks and for asphalt compaction. This software detects automatically on which machine it is being used: it reads out the "electronic type plate", so to speak. As a result, the user can dispense with the arduous and error-prone input of machine parameters. In addition, the specific construction-site data can be prepared in advance for every project and then transferred to the panel PCs.
Compaction progress at a glance
During their work, the drivers can follow the compaction progress in the form of coloured maps on their panel PC. Additional information such as location maps or geo lines can be displayed as an aid to orientation. It is even possible to display two large graphics next to each other (e.g. compaction changes and temperature), as well as the display of specific details such as the number of passes, the frequency and the amplitude. Even so, the displays always remain clear and easily comprehensible. There are no confusing buttons or unclear taskbars in the interface.
Thanks to this presentation, the HCQ-Navigator Premium is an effective tool for:
- reliably complying with compaction specifications or recommendations
- avoiding excessive or insufficient levels of compaction
- complying with a temperature window during asphalt compaction
- working efficiently (avoidance of unnecessary passes)
- compacting in an extremely homogeneous and so high-quality manner
Hamm places a high priority on intuitive operation and the HCQ-Navigator, like other systems, fulfils this criterion: The system is easy to handle, and the users quickly understand how to achieve better compaction results with it.
A great additional benefit for the construction site management is the system's simple documentation: with the HCQ-Navigator, construction companies can monitor and document the progress and quality of their own work, because all the data can be saved conveniently and archived easily via a USB interface. With this system, it is even possible to fulfil the requirements of CCC in earthworks with regard to compaction or stabilisation in layers.
The modular concept enables step-by-step integration of the system into the machine fleet. Every new Hamm compactor with a cabin or ROPS roof can be pre-equipped for HCQ Premium. It is also possible to retrofit most existing machines with the sensors, the cabling and the connections for the components. The panel PC with touchscreen, the DGPS receiver or the RTK modem must be supplemented individually for the use of a tracking station.
The system processes DGPS signals of various qualities (e.g. for Europe: EGNOS, VBS, HP and RTK or for the USA: WAAS, XP/HP, VBS or RTK). In the currently highest available resolution when using an RTK modem with a tracking station, the position data are determined with an accuracy of 2.5 cm (1 inch). The "open interface" concept also allows the use of DGPS receivers or tracking stations made by other manufacturers.
Precise measurements, meaningful results
The HCQ-Navigator Premium measures different values, depending on the application: in the case of earthworks, the rigidity and the passes are particularly relevant. In asphalt construction, the temperature at the passes is measured. The result is a clear compaction map, which shows to the driver in real time which areas have already been compacted and how often. Other systems on the market work exclusively with the rigidity and do not take the static compaction into account. Hamm is the only manufacturer to incorporate all compactor types in the analysis, for example even static compactors such as the rubber wheeled roller GRW 280.
In determining the exact position of the application of force, the HCQ-Navigator again offers something more: the Hamm system measures and evaluates every roller drum and/or axle individually. This is the only way to accurately determine and describe the conditions with combination rollers when compacting with a large offset and crab steering.
The sturdy, powerful panel PC corresponds to military standards, works within a temperature range of -40 to +70°C and is water and vibration resistant thanks to a closed, complete metal housing (IP65). It is therefore also suitable for machines with an open operating platform. The extremely sturdy DGPS receiver that is used as standard is equally resistant to vibration. The device is attached to the roof using magnetic feet, making it easy and quick to install.
Hamm has created the HCQ-Navigator Premium as a "plug and play" solution. No configuration is necessary at the start of work thanks to the "electronic type plate", so the compaction work can start immediately. Even after a break or at the start of a new shift, the HCQ Premium provides a signal extremely quickly: after the machine is switched off, it retains the GPS signal for up to 16 hours. This eliminates waiting times when the system has to initialise again with the GNSS satellites.
Another extremely useful feature is the bridging of radio shadows: the system remains active even if the position signal from the satellites is briefly not available, such as when compacting under bridges. In such cases, the system uses its internal sensors and the software to bridge the radio shadow.