截割部是滚筒式采煤机的重要工作部件,由于井下工作条件的限制,截割传动部普遍存在着结构紧凑、内腔空间小、发热量大、冲击载荷大及油液易污染等特点。解决截割部齿轮及轴承的润滑和冷却问题尤为重要。1存在的问题目前采煤机的截割部以飞溅润滑为主,采用内外部水套冷却,该润滑冷却方式主要适用于中小功率采煤机在水平工作面工作。如图1所示,在水平或 Cutting section is an important working part of drum shearer. Due to the limitation of downhole working conditions, there are common features in cutting section, such as compact structure, small inner cavity, large calorific value, large impact load and easy oil contamination . To solve the cutting gear and bearing lubrication and cooling issues is particularly important. 1 existing problems Shearer’s cutting unit to splash lubrication, using internal and external water jacket cooling, the lubrication cooling method is mainly suitable for small and medium-sized power shearer work in the horizontal face. As shown in Figure 1, in horizontal or