Vögele module gives paver dual powers
01 October 2008
Germany’s Vögele has launched a new spray-paving module that can be used to convert its Super 1800-2 conventional paver into a spray paver, through just a minor modification.
The Vögele SprayJet Module makes the paver more economical and productive, as it can be easily converted back into a conventional paver in a very short time, according to the manufacturer.
“The Super 1800-2 is powered by a Perkins engine type 1106D-E66TA with a rated output of 129.6 kW at 2,000 rpm. In addition to the standard design, the tracked Super 1800-2 is offered in different versions for special-purpose applications,” says a Vögele spokesman. “Among these is the new version with the module that turns it into cutting-edge spray paver, allowing bitumen emulsion to be sprayed and asphalt wearing course to be paved in a single pass almost simultaneously.”
He continues: “With the module, the paver becomes ideal for placing thin asphalt layers on tack coat or spray seal, hot on hot. And even for non-specialised road building applications, it offers an economical and clean alternative wherever pre-spraying and subsequent paving is required. And if there are no jobs requiring the use of the module, contractors can employ the Super 1800-2 for conventional paving, thus boosting the machine’s productivity.”
The components of the Vögele SprayJet Module include a large, heated emulsion tank holding a maximum of 2,000 litres and five spray bars positioned at the front, the sides and the rear of the paver. An electronic control system allows the spread rate to be precisely metered, so that no more emulsion is applied than is absolutely necessary, saving emulsion and reducing spray mist to a minimum, he says.
The ErgoPlus operating system in Vögele’s ‘dash-2’ generation of pavers, makes the module extremely easy to handle and understand, through self-explanatory symbols. “The operator only needs to select the desired rate of spread-spray pressure and the emulsion volume is adjusted automatically to the pave speed and pave width,” the spokesman explains.
Compressed air reservoirs with a total capacity of 60 litres are installed in the paver in order to supply the pneumatically-operated spray nozzles with compressed air. A pressure of 8 bar prevails in the system.
The five spray bars, with a total of 20 self-sealing spray nozzles, are so positioned that the emulsion film spread on the base cannot be damaged by the paver’s tracks.
“The special design of the nozzles and the constant spraying pressure of 3 bar allows for absolutely uniform spraying. This makes it possible to spray along road kerbs without getting emulsion on the kerb. What's more, the new procedure substantially reduces the formation of spray mist, as the spraying pressure is very low and the spray droplets are larger. The system thus offers a major advantage for the job-site team, as emulsion fumes are reduced to a minimum,” he says.
The Vögele SprayJet Module also breaks new ground on spread rates, the spokesman says. “While conventional systems are only able to spray at large rates, the SprayJet Module allows a rate of spread to be selected from 0.2 kg up to 1.5 kg per sq m, depending upon the kind of emulsion used, the emulsion viscosity and the temperature when applied. Pave speeds between 2 and 20 m per minute are possible.”
When used with Vögele’s AB 500-2 extending screed, paving widths up to 5 m are achieved.
The AB 500-2 is available in TV (tamper and vibrators) and TP1 (tamper and 1 pressure bar) versions for high compaction, and like all Vögele screeds, the AB 500-2 features electric heating, the spokesman adds.
