详解导致球磨机齿轮折断的原因

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       当球磨机配件齿轮出折断现象时，大多数认为螺栓松动，小齿轮轴与中间轴没有保证同精度造成的。但是除此之外，齿轮折断还存在其它其它原因，如下：

齿圈跳动引发折断

由于球磨机的大齿圈是用螺栓固定在简体上的，其端面跳动是靠分布在大齿圈圆周上的螺丝孔用顶丝调整。当大齿圈端面跳动量没达到要求，球磨机在长时间运转后，螺栓松动，齿圈变形，就容易造成齿圈振动。

机身振动导致

球磨机在运转时，出现频繁的振动，如果不及时处理，则坐导致延伸轴轴承座松动引起小齿轮振动，如果齿轮轴与延伸轴不对中，齿轮轴中心线与延伸轴倾斜偏差较大，引起正在运转齿轮发折断现象。

安装因素

球磨机小齿轮与大齿圈的啮合非常关键，合理的安装可以延长球磨机大小齿轮的使用寿命，但是当大小齿轮安装时，大齿圈已经随筒体固定，便需要我们调整小齿轮的位置，要求小齿轮与大齿圈轴向中心线平行，齿顶间隙与齿侧间隙合适，过小容易发生根切现象，过大齿轮易发生断齿现象。

未盘车或盘车时间不够

停机之前必须停止向磨机给矿，用水清空球磨机筒内的物料，不然粘稠的料浆干涸后会粘在球磨机简内，增加下次启动球磨机的负荷，即使这样，在下次启动球磨机之前仍然需先启动慢速驱动装置进行盘车，这样不仅会让球磨机主轴承与中空轴中间形成一层油膜，也使磨机内的钢球物料松散。这样在启动磨机时，可以大大减少启动负荷。如果球磨机在启动之前不进行盘车的话，球磨机一旦进行启动时会容易导致小齿轮断齿。

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