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Volvo Introduces Compaction Heavyweights

This heavyweight is looking to take on the biggest jobs.

Thu May 09, 2013 - National Edition
Construction Equipment Guide

When it comes to the biggest asphalt compacting jobs, Volvo Construction Equipment offers a range of high-performing heavy hitters — all of which are designed to handle a variety of applications and conditions and deliver a smooth, even mat in fewer passes.

Highly versatile and capable of tackling a variety of applications, Volvo heavyweight double-drum asphalt compactors, the DD110B, DD120B and DD140B, can manage the industry’s biggest tasks — from major highway work to airport runways.

High centrifugal force, powerful frequency and optimal drum weight combine to produce optimum energy output for excellent compaction and high machine productivity, according to the manufacturer.

The DD110B, DD120B and DD140B offer dual amplitude settings, allowing operators to quickly and easily adjust drum forces when material depth changes. For even greater versatility, eight amplitude settings are available, allowing operators to adjust amplitude as circumstances vary with a hand wheel conveniently located inside the end of each drum. The spring-loaded design allows for quick and precise adjustments that optimize drum performance, helping operators achieve maximum compaction results with fewer passes.

Maintaining proper impact spacing is simplified, as well. When operators select the appropriate amplitude setting, the machine automatically matches that setting with an ideal frequency, inducing higher forces at lower amplitudes, accelerating the compaction of thinner lifts and warm mixes without fracturing the aggregate in the mat.

Powerful Efficiency

These compactors are equipped with the Volvo D4 engine, which conforms to Tier IVi emissions standards, providing strong, fuel-efficient performance with power in reserve. Propulsion comes in the form of a closed loop hydrostatic parallel circuit to both drums, which are fitted with heavy-duty radial piston motors. Travel speeds go up to 7 mph (11.3 kmh), and vibration automatically engages or disengages when pre-set speed thresholds are reached. When an operator selects the automatic operational mode, eccentric rotation is matched to the direction of travel, helping eliminate the possibility operators will forget to adjust the setting. This not only requires less engine power, but results in reduced material distortion and improved mat smoothness.

The compactors feature two independent water systems, each with its own primary and back-up spray bar. The pressurized water system provides consistent water flow to the drum surfaces, eliminating asphalt build-up that would require time-consuming and costly rework. As the water flow is adjustable, water can be conserved, thereby reducing the time taken for water refills.

Safe and Comfortable for Increased Productivity

Operator safety and enhanced productivity were top priorities in each compactor design. The operator area provides an unobstructed, all-around view, reducing operator neck strain and improving safety for personnel on the ground. The vibration-isolated operator platform and ergonomic layout of controls contribute to a low-fatigue work environment. The operator sits in a ROPS/FOPS protected structure with a console that can be rotated 180 degrees, optimizing comfort and sight line visibility. A console-mounted impact spacing meter allows operators to adjust travel speeds to maintain proper asphalt smoothness.

Access for Maintenance and Service

Routine maintenance is simplified with a swing-up hood that allows for easy, ground-level access to the engine and hydraulic components. Lockable covers protect the operator console, while lockable engine hood, fuel cap, water fill cap and deck access doors help deter theft and vandalism.

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