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1945年以来,洛林铁矿的生产率不断提高(图1),矿石产量1961年和1962年达到6200万吨,现保持在5200万吨水平上。工人劳动生产率和总生产率均持续上升。掘作业。从1960年到现在,设备不断改进和更新,整个发展过程可分为五个时期: 1)采用耙矿平台(三滚筒卷扬机牵引耙斗,将矿石集运至运输机一链式提升机上)和ConwayP35型装载机,在1955年达到全盛。现在这些机械均已淘汰。 2)六十年代采用Joy18HR型装载机和电传动(后来是柴油机—电传动)梭式矿车。1965年达到全盛。 3)采用Joy18HR型装载机配重型自卸汽车
Since 1945, the productivity of the Lorin Iron Mine has been continuously rising (Figure 1). Ore production has reached 62 million tons in 1961 and 1962, now at 52 million tons. Labor productivity and total productivity of workers all continued to rise. Dig homework. From 1960 to the present, the equipment has been continuously improved and updated. The whole development process can be divided into five phases: 1) the use of a rake platform (three drum hoist drag harvester to collect ore to a conveyor chain hoist) and Conway P35 Loader, reached its heyday in 1955. Now these machines have been eliminated. 2) In the 1960s, Joy18HR type loader and electric drive (later diesel-electric drive) shuttle car were adopted. 1965 reached its heyday. 3) Joy18HR type loader with heavy-duty dump truck