汽缸和鞲鞴是蒸汽机车的重要部件,其汽密程度直接影响到机车的牵引力。本文主要讨论A型分解式汽缸胀圈的汽密机理,影响汽密的主要因素及所采取的技术措施。 A型汽缸胀圈的结构及静态受力情况如图1所示(力的分析,均未考虑重力)。汽缸胀圈弹簧的弹力F经胀圈内瓣传递给胀 Cylinders and 鞲 鞴 are important components of steam locomotives, the degree of steam density directly affects the locomotive traction. This paper mainly discusses the steam-tight mechanism of A-type exploded cylinder expansion ring, the main factors that affect the steam density and the technical measures taken. A-type cylinder expansion ring structure and static stress situation shown in Figure 1 (force analysis, did not consider the gravity). Cylinder expander spring stretch F inflation ring within the valve passed to the expansion