(2)扩大范围。冷天长距离运输时,将受低温影响而结块的沥青混合料卸入沥青混合料转动车,经其二次搅拌后,结块料被打碎,从而获得了集料及温度均匀一致的沥青混合料,保证了施工质量,在铺设城市道路时,SB2500C可以到指定的地点接收自卸车上的沥青混合料,而后再转送到沥青混合料摊铺机上,这样可降胝施工要求的大作业空间,类似的施工技术也可用在桥梁和立交桥的施工中。在有路障的路肩铺设施工中,自卸车在沥青混合料转动车侧前方成K形作业,沥青混合料转运车将沥青混合料通过K形作业形式输送到沥青混合料摊铺机上。
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)