Online Equipment Focus: Haul Trucks — Carrying a Heavy Load
Hydrema U.S., Inc. says the cab of its 922C articulated dump truck sits high on the body and has an inclined narrow hood, which provides the operator with all-around visibility. Additional features include broad mirrors for added visibility when in reverse, a climate-control system for operator comfort, and user-friendly steering and joystick controls. The truck has a 15.7-cubic-yard capacity and automatically changes pressure between cylinders while dumping on uneven ground to prevent tip over.
Suspension system offers auto-leveling, stability
Volvo Construction Equipment says its E-Series articulated hauler is the world’s first hauler to offer a suspension system with automatic leveling and stability control on all wheels, providing extraordinary off-road performance, empty or full, and allowing higher speeds for increased production. The series includes seven models ranging in capacity from the 26.5-ton A25E to the 43-ton A40E. All are equipped with Volvo Advanced Combustion Technology Tier III engines to offer high torque at low revolutions to maintain fuel efficiency and reduce noise levels, according to the company.
Low center of gravity
Doosan Moxy, a division of Doosan Infracore America, says it has implemented specific design changes to its next generation articulated dump trucks to meet the demands of today. Changes include a sloping rear frame to ensure low center of gravity, stability, and weight distribution to the front axle. According to the company, the truck’s permanent six-wheel drive provides equal power distribution, and the free-swinging rear tandem bogie and special articulation system offer excellent driving performance in difficult terrain. Models range from the 20-cubic-yard MT26 to the 38-cubic-yard MT51.
JCB offers three heavy-duty articulated dump trucks — the 714, 718, and 722. The company says they are highly maneuverable, capable of all-year-round operation, and come with the additional benefit of being able to work on ground conditions with poor load-supporting qualities. The company says the 722 (shown) features a patented front suspension system that is self-leveling and provides the operator with a smooth and comfortable ride with minimum vibration. A larger radiator has been added for warm climate operation. All models feature an electronic monitoring system, which constantly monitors the machine’s performance.
Philippi-Hagenbuch, Inc. says its patented rear-eject HiVol truck bodies for articulated off-highway haul trucks are specifically engineered for all operating conditions and the toughest applications. The automatic opening tailgate raises and lowers with ejector movement, and is operated by a single, three-stage hydraulic cylinder. A low center of gravity allows for stationary or on-the-go discharge of material. The company says its no-maintenance design increases productivity and limits downtime.