建筑施工现场,混凝土工程的搅拌、浇捣、水平、垂直运输等工种,虽然实现了机械化或半机械化,但碎、卵石的上料仍使用着铁锹类的手工操作。尤其在大量混凝土工程的浇捣中,花费着大量的劳动力。针对这一问题,南京市建筑安装公司的工人同志遵照 At the construction site, concrete works such as mixing, pouring, horizontal and vertical transportation, and other types of work, although mechanized or semi-mechanized, but the feeding of broken and pebbles still use the manual operation of iron shovels. Especially in the pouring of large quantities of concrete works, a large amount of labor is spent. In response to this problem, the worker comrades of Nanjing Construction & Installation Co., Ltd.