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首钢炼钢厂的100/30吨桥吊是太原重型机器厂制造,跨度22米,主梁结构为箱形,四轨双小车式。主小车起重量100吨,副小车起重量30吨,大车运行机构为集中传动型式。该吊车于1964年投产,主要用于将铁水兑入混铁炉。由于仅此一台百吨吊车供三座30吨转炉炼钢用的铁水,连续生产,工作十分频繁,JC%值大于60%。在这种高温、多尘、繁重工作条件下,近几年吊车主梁陆续出现一些缺陷,并逐渐扩大,1982年11月经检测发现裂纹和变形十分严重,经加固强化处理,目前已正常安全运行。
The 100/30 ton bridge crane at Shougang Steel Plant is manufactured by Taiyuan Heavy Machinery Plant and has a span of 22 meters. The main girder structure is box-shaped and four-rail double-car type. The main car lifting capacity of 100 tons, vice car lifting capacity of 30 tons, trolley operating agencies for the centralized transmission type. The crane put into operation in 1964, mainly for the molten iron mixed with mixing furnace. As only one hundred tons of cranes for three 30-ton converter steelmaking hot metal, continuous production, work is very frequent, JC% value greater than 60%. In this high temperature, dusty, heavy working conditions, in recent years there have been some defects crane girders gradually and gradually expanded in November 1982 after testing found that cracks and deformation is very serious, the reinforcement and strengthening of the normal operation of the safe operation .