Blaw-Knox/Ingersoll Rand's MC-330 material transfer vehicle
The MC-330 material transfer vehicle from Blaw-Knox/Ingersoll-Rand, Mattoon, Ill., is designed to work in conjunction with a paving train to reduce material hauling cost and increase paver laydown production, according to the manufacturer. The self-propelled, wheel-mounted bulk material handling/delivery system, with a built-in storage capacity of 30 tons (27.2 Mg), works by receiving hot mix asphalt (HMA) from a haul unit and delivering it to a paver.
Standard end-dump haul units first deposit material into the conventional receiving hopper of the MC-330. The material is then transported, undisturbed, to the rear of the machine via a high capacity, live bottom, non-slip, belt conveyor to be discharged into the paver’s hopper. The belt is 60 inches (1.5 m) wide and travels along a 15-degree incline at an infinitely variable rate up to 61 feet (18.6 m) per minute. The main conveyor drive is an independent, variable speed hydrostatic drive that operates from an electrically controlled, variable displacement pump through dual orbital motors and planetary final reduction drives on the upper conveyor shaft. The drive is designed to power the live bottom conveyor either forward or rearward without belt slippage.
The discharge rate is infinitely variable up to a maximum of 32 tons (29 Mg) per minute, according to the manufacturer. Material discharge is direct from the rear, or, with the addition of the optional rear swing conveyor, at any point up to a 90-degree angle on either side of the unit. This allows for offset paving. Both the main and optional swing conveyors are equipped with a belt spray system, which works via a series of filtered spray nozzles, pump, electric switch control(s) and a 40-gallon (151.4-L) reservoir tank with a replaceable filter. The spray system sprays directly onto the belts to help prevent asphalt build-up. (end)