我矿井下使用的反修100和YQ-100型潜孔凿岩机的电动机经常烧坏,主要是由于进水受潮所造成。我们在这两种凿岩机电动机上加设防水装置,经过一段时间试用,情况基本良好。其方法如下:1.在反修100型凿岩机电动机的前端盖和减速箱的结合部加一甩水圈和防水圈,并在原端盖加工一个淌水沟和出水孔(图1)。2.将YQ-100型凿岩机电动机外挡油盖 The motors of the anti-revision 100 and YQ-100 down-the-hole rock drills used under mine were often burnt out, mainly due to damp influent. We have set up water-proofing devices on both rock drill motors. After a period of trial, the situation is basically good. The method is as follows: 1. Add a threshing ring and a waterproof ring to the junction of the front end cover of the anti-repair type 100 rock drill motor and the reduction gear box, and process a trenching and water outlet on the original end cap (Figure 1). 2. The YQ-100 type rock drill motor oil cover