武钢程潮铁矿井下采矿是用瑞典进口的T4G(即国产的 ZYQ—14型)装运机,由于井下作业条件差,加上铲斗摇臂联接部份密封不良,致使两臂3611轴承损坏严重,不到三个月就得更换,全矿30多台装运机,每年要消耗大量的轴承,由于轴承供应紧张,因此,常常影响生产。在杨久祥和姚希世等同志的积极努力下,72年用铸铜球面轴承代替3611轴承,效果 The underground mining of Chengchao Iron Mine in Wugang is T4G (that is, domestic ZYQ-14 type) imported from Sweden. Due to poor working conditions in the underground and poor sealing of the coupling part of the bucket rocker, the bearing of the two arms 3611 is damaged seriously, To be replaced in three months, the whole ore more than 30 units, each year to consume a large number of bearings, bearing tight supply, therefore, often affect the production. In Yang Juxiang and Yao Xishi and other comrades of the active efforts, 72 years with cast bronze spherical bearings instead of 3611 bearings, the effect