GB894-76中规定使用的轴用弹性挡圈，在工作条件恶劣的情况下很容易飞出或碎裂。我厂在为钢铁行业设计制造的链传动设备中，最初采用了GB894-76规定的挡圈26，由于链条负荷大，冲击猛烈，过高温区，因而挡因多次失效。为此我厂专门设计了一种轮用塑性档图（见图1）,应用效果颇 GB894-76 provisions of the use of the shaft retaining ring, poor working conditions in the case of very easy to fly out or fragmentation. I plant in the steel industry for the design and manufacture of chain drive equipment, the initial use of GB894-76 provisions of the ring 26, due to heavy chain load, the impact of violent, over-temperature zone, which block multiple failures. To this end I plant a specially designed round of plastic file map (see Figure 1), the application quite satisfactory results