在设备维修工作中,经常遇到孔或轴弹性挡圈的拆卸与安装。一般情况下,只要有内、外卡簧钳就可以进行。但对大规格尺寸的孔用弹性挡圈,往往因现场无合适的卡簧钳而难于进行安装。如我厂200m~3大型发酵罐的NGW-L型行星齿轮减速机的行星齿轮孔用挡圈,其规格尺寸如图3所示。更换时我们采用如下方法,即:利用虎钳开口尺寸大、夹紧力大的特点,将挡圈放入虎钳口内,然后紧缩直至挡圈缺口两边的耳环靠紧。再用φ3.2mm的铁条在另外的虎钳上弯制一件如图4所示的“卡子”。图中l_p的长度尺寸,应比挡圈紧缩耳环靠紧后两个φ4mm孔的中心距略大0.5mm～ In equipment maintenance work, often encountered hole or shaft retaining ring disassembly and installation. Under normal circumstances, as long as there are internal and external Reed clamp can be carried out. However, for the large-size hole circlip, it is often difficult to install due to lack of suitable snap ring clamp on site. Such as our factory 200m ~ 3 large fermenter NGW-L planetary gear reducer planetary gear retaining ring, the size specifications shown in Figure 3. We use the following replacement method, namely: the use of vise opening size, clamping force characteristics, the ring into the vise mouth, and then tighten the ring until both sides of the ring gap close earrings. And then use the φ3.2mm iron in the other vise bending a piece shown in Figure 4 “clip.” Figure l_p length size should be tight than the ring tight earrings tight after the two φ4mm hole center distance slightly larger 0.5mm ~