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我矿东山采场矿车修理组的同志们,在党支部的领导下,于1972年11月制造了一个“A”型起重架,专用于处理矿车掉道和更换轮对的修理工作,使用5年多效果良好,已在其他采场推广使用。我矿现在使用的2米~3固定式矿车,轨距600毫米,自重1.1吨,重车4.5吨左右。而一般单轨巷道宽仅2.2米,电机车直流架线高1.8～2米。考虑到在如此狭小的空间处理矿车掉道或更换轮对时的困难,A型起重架的结构有其特点:它的顶部结构虽与普通三角架相同,但三条承重腿井不是均衡布置的。两条腿的尺寸相同,呈A字形,另一条腿系伸
My comrades at the mine Dongshan stope mine repair group, under the leadership of the party branch, manufactured an “A” -type crane frame in November 1972 dedicated to the repair work of dropouts and replacement wheelsets , The use of more than 5 years of good results, has been used in other stopes. My mine is now used 2 ~ 3 fixed tub, track gauge 600 mm, weight 1.1 tons, 4.5 tons heavy truck. The general single-lane tunnel width of only 2.2 meters, 1.8 meters high locomotive DC overhead line. Considering the difficulty of handling the trolley or changing wheelsets in such a small space, the structure of the A-frame has its own characteristics: although the top structure of the A-frame is the same as that of a common tripod, the three legs are not balanced of. Two legs of the same size, was A-shaped, the other leg extension