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我矿及我矿附近某铁矿使用的φ1200×6600型单螺旋分级机,主轴承及轴头经常损坏,一般寿命在2—3个月左右,不仅不经济,更重要的是影响生产。为此,我们对该机型分析后,将该机型的主轴承部进行大胆改革。在某铁矿试验表明,改革基本成功,使用半年来,主轴承及轴头仍正常。该机型原来的主轴承部如图1所示。滑动轴承在制造安装时允许与轴有一定的初间隙以便形成润滑油膜。开车一段时间后,间隙变大,轴头在丝杆拉力作用下与主轴承不同心,两者中心线成一定角度,这样,轴头与主轴承间的均匀受力变为集中受力,受力端磨损严重,造成主轴承内进入沉砂,并且压力水失去应有的作用,致使主轴承及油封过早
I mine and I use a mine near mine φ1200 × 6600 single spiral classifier, the main bearings and shaft often damaged, the general life expectancy of about 2-3 months, not only uneconomical, more importantly, affect the production. To this end, we analyzed the model, the model of the main bearing department bold reform. In an iron ore test shows that the basic success of the reform, the use of six months, the main bearing and shaft head is still normal. The main bearing of the model shown in Figure 1. Sliding bearings allow a certain initial clearance to the shaft during manufacture and installation in order to form a lubricant film. Drive a period of time, the gap becomes larger, the shaft head in the screw tension and the main bearing is not the heart, the two center lines at an angle, so that uniform axial force between the head and the main bearing into force, by Severe wear on the end, resulting in the main bearing into the grit, and the pressure loss of water due to the role, resulting in premature bearing and oil seal