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手扶拖拉机耕作尾轮使用寿命低,一般只能工作300～500小时,主要是尾轮的密封性能差,影响了使用寿命。几年来,我们进行了多次改进,基本上解决了尾轮的密封问题。耕作尾轮原结构采用滑动轴套的办法(图1),其缺点是密封性差,仅有一道防泥水的油封,泥水易进入轮毂内;润滑性差,轴套与衬套管经常处于无润滑油的干摩擦状态。每一个耕作季节就得换几套零件。起初,我们将其轴承的结构改为用滚动轴承的结构,图2,,但防水性能和润滑性仍差,
Tailing tractors Tailing wheel life is low, generally only work 300 to 500 hours, mainly the sealing performance of the tail wheel is poor, affecting the service life. In recent years, we have made many improvements, basically solved the sealing problem of the tail wheel. The original structure of the tilling wheel used sliding sleeve approach (Figure 1), the disadvantage is poor sealing, only a seal of anti-muddy water, mud easily enter the hub; poor lubrication, bushings and bushings often without oil Dry friction state. You have to change several sets of parts every farming season. Initially, we will change the structure of its bearing with a roller bearing structure, but the waterproof performance and lubricity is still poor,