我公司各矿使用的一种混凝土喷射机组，在应用中经常出现机组的上料搅拌机的上料螺旋转不动的现象，严重时出现上料搅拌机的电动机被烧坏。经查，发现是上料搅拌机后轮支承轴承中进入水泥砂浆后使rrrrrrrrn轴承被卡死引起上料螺旋转不动。为此，我们对上料搅拌机轴瑞rrrrrrrrn结构进行了改进。1后轴端原用结构存在的问题 I used a mine in the company of a concrete jet unit, the unit often appear in the application of the feeding screw on the feed mixer phenomenon, serious when the mixer motor was burned. After investigation, found to be feeding mixer rear wheel bearings into the cement mortar so that the bearing is stuck stuck on the screw does not move. For this reason, we have improved the structure of feeding mixer shaft Rui r r r r r r r r r n. 1 rear shaft structure of the original problems