CEA has recently taken up a new device from Dynapac in the SD2500WS wheeled paver. There are many opportunities for its implementation within the roading industry, as Roads & Infrastructure Magazine learns.
Properly paving roads is vital for many different groups. This is where Dynapac CEA devices regularly step in with their high-quality machines. The newest of these machines is the Dynapac SD2500WS and V5100TVE wheeled pavers.
They have a standard operating weight of 18,500 kilograms and a hopper capacity of six cubic metres. The wheeled pavers are known for their reliability over many years of operation and have a significant range of applications. The SD2500WS and V5100TVE are ideal for paving urban roads, partly due to their flexibility across multiple industry sectors.
Dynapac CEA has worked tirelessly to respond to the needs of end users and the industry in general. As such, a wide range of optional equipment and attachments are available, further enhancing their versatility.
Power and performance
The Dynapac SD wheeled pavers range provides powerful engines with high-end features and the flexibility to adapt to different site conditions. They are known for their compact design and superior manoeuvrability, which helps with the advanced new drive concept and the power to lay a working width of up to nine metres.
Part of what makes the Dynapac SD wheeled paver range so unique is the improved traction. The exclusive AddTraxxion feature hydraulically optimises the traction of the front wheels while accounting for the load in the hopper. It combines seamlessly with the electronically controlled rear-wheel drive, providing optimum traction through precision and power.
“This innovative approach to traction provides an outstanding driving experience,” says Ralf Peter, Dynapac CEA National Technical Paving Specialist. “It all comes from a well-balanced undercarriage, wide tyres, and a pendulum front axle bogie. The Dynapac SD wheeled pavers also have a wide wheelbase, a low centre of gravity and a small turning circle.”
The new hydrostatic, wear-free brake system offers maximum deceleration for increased safety. The SD2500W is a four-wheel drive vehicle, and the WS version has a six-wheel drive.
The powerful drive gives end-users a high transport speed – from standstill to top speed in just a few seconds – making it easy to follow the traffic flow.
Dynapac wheeled machines are equipped with high-performance tyres specifically selected for paving applications. They have excellent ground contact and traction, providing cross-stability and power transmission.
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Hopping excellence
Dynapac has designed the hopper to transfer outstanding materials. It’s long at 1953 millimetres and has a very low dump height for fast and easy material transfer from lorries.
Separately controlled hopper wings with generous solid rubber flaps ensure quick and easy material handling. The chamfered hopper corners prevent cold material from being left in the hopper. The conveyor tunnel has been shaped for optimal flow and minimal segregation, with a reversible twin conveyor system offering smooth transfer.
The SD2500WS and V5100TVE offer a robust paddle sensor system for proportional control to ensure flawless material flow. This new optional hopper front flap reduces material spillage on the push rollers and the road. It also helps to empty the hopper completely and reduces the need for manual work.
“The Dynapac SD wheeled pavers offer a shock absorption system based on profile dampers,” says Peter.
The left and right augers are independently driven and provide continuously variable control, even in reverse mode. Dynapac’s robust auger system has improved torque to yield perfect paving at all working widths. The auger height can be adjusted independently while paving.
Operator visibility
The operator of a Dynapac has a clear view into the hopper, conveyor, and auger compartment. They also have direct eye contact with screed operators and truck drivers. The platform slides out up to 50 centimetres on both sides just by pressing a button on the dashboard.
“The cabin has been ergonomically designed to ensure that the operator can work comfortably and effectively throughout all the process stages,” says Peter. “The platform provides plenty of headroom and a flat floor with lots of storage space.”
The big storage boxes in the platform’s floor improve the view out of the back of the cabin. The roof provides two integrated working lights, one at the front and one at the rear.
With the improved dashboard console, repositioning the dashboard has become even more accessible. The Dynapac SD paver generation also offers a weather house with opening side and front windows for comfortable operation in all weather conditions.
An optional fume suction system is available to improve the working environment and keep the fume level around the operator stand low.
Dynapac TruckAssist system is designed to help trucks dock correctly and safely with the paver by simplifying communication between the paver and truck driver.
The system comprises two sturdy, dimmable LED bars strategically positioned on both hopper edges.
TruckAssist allows safe, efficient communication between the paver and truck drivers. It enables the paver driver to always control the truck docking process. This feature is handy at night and in low-noise areas, reducing the need to use the horn.
This system is beneficial where a lot of spot work is involved. That is because it is designed to reduce setting and transport times on the job site.
The paver driver now has the option to save the position of the auger and screed before moving from one section to the next.
One push of a button on the redesigned operator panel will lift the hydraulic front flap, auger, and screed, lock the screed for transport and reverse the conveyor slightly. Other features can be added on demand.
This article was originally published in the June edition of our magazine. To read the magazine, click here.
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