我国目前应用较为广泛的限制销轴轴向位置的结构有以下几种,如图1所示。这些结构都有各自的缺点:弹簧卡圈需要用专用工具拆装;开口销使用次数有限,常常是一次性的;卡板限位结构零件较多,装配时有方向限制而且拆装也很麻烦。我厂参考国外资料,采用了一种快速拆装限制插销,如图2所示。该插销结构简 China’s current application of a more extensive structure to limit the axial position of the pin shaft is as follows, as shown in Figure 1. These structures have their own disadvantages: the spring clip needs to be disassembled and assembled with special tools; the use of split pins is limited, often for a one-time use; there are many parts in the limit structure of the card, there is a direction limitation during assembly and the assembly and disassembly are also troublesome . Our factory refers to foreign materials and adopts a quick dismantling restricting plug, as shown in Figure 2. The bolt structure is simple