我们华北冶金矿建第二井巷公司马万水工程队自1977年开始使用S8型梭车,至今已12个年头了。1988年,我队在酒钢镜铁山矿施工,轨距均为900mm。但原有梭车均为600mm轨距。受资金和时间限制,我队不得不自己动手将梭车加以改造。第一次改造,想得简单,只在原600mm轨距转向架的基础上,加长轴的尺寸,其它部分未作大的变动。结果,由于受力不合理,最大弯矩大幅度增大,以致屡屡断轴。第二次改造,则在加长轴的尺寸的同时,将轴承、板簧置于轮组外侧,用箱体式装配。这样,使最大弯矩比原设计还小(附图),而且也便于 We North China Metallurgical Mine Construction Second Lane Company Mavan Water Works team since 1977, the S8-type shuttle, has been 12 years. In 1988, our team built the Jingtishan Mine at Jiuquan Iron and Steel Co., Ltd. with a track gauge of 900mm. But the original shuttle are 600mm gauge. Limited by funding and time, our team had to rebuild the shuttle itself. The first transformation, think simple, only in the original 600mm gauge bogie on the basis of the length of the shaft size, the other part is not made major changes. As a result, due to unreasonable force, the maximum bending moment increased significantly, resulting in broken shaft. The second transformation, then lengthen the shaft size at the same time, the bearings, leaf springs placed on the outside of the wheel set, box-type assembly. In this way, the maximum bending moment than the original design is small (with photos), but also easy