链轮易松动不妨作改进农用三轮车变速箱与后桥之间一般采用链传动。链轮位于变速箱输出轴轴端，采用轴端单孔挡圈、弹簧垫圈和螺栓进行轴向固定。在使用中，机手会遇到螺栓松脱，链轮连同套筒滚子链、轴端单孔挡圈一起从变速箱输出轴掉下来的现象。我们知道，农用三轮车采... Loose sprocket may wish to improve the agricultural tricycle gearbox and the general use of chain drive between the rear axle. The sprocket is located on the shaft end of the gearbox output shaft, which is fixed axially by a single-end collar on the shaft end, a spring washer and a bolt. In use, the hand will encounter loose bolts, sprocket with the sleeve roller chain, the shaft end of the single-hole retaining ring together from the gearbox output shaft fell phenomenon. We know that agricultural tricycle mining ...