主要零部件及连接 螺栓和销轴连接 螺栓连接应采取防止松动措施；销轴连接必须采取防止脱落措施。 焊接连接 不应有漏焊、烧穿、气孔、夹渣、未焊透、严重咬边等缺陷。所有焊渣、焊瘤等应清除干净。 乘客可触及之处检查 不允许有外露的锐边、毛刺、尖角和危险凸刀出物。
The main components and connections Bolts and bolt connecting pin to prevent loosening of the measures to be taken; pin connection must be taken to prevent the shedding of measures. Welding connection should not be short of welding, pores, slag, lack of penetration, serious defects such as biting edge. All welding slag, welding and other tumors should be cleared away. The places Passengers can reach are not allowed to have exposed sharp edges, burrs, monoceras and dangerous material, convex knife.