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目前在煤矿带式输送机托辊密封结构和密封型式主要有2种:①应用于冲压轴承座的端面带有环形密封槽的内外封圈具有组合密封形式的迷宫密封;②碗形密封结构,借助橡胶之类的弹性体,在受到装配力的施压的时候,经由碗形件磨损生成的弹性的变形力来实现密封活动。
密封组件都是由高分子材质制成,其性能优良,带来了一系列的性能优化:径向间隙变小和防尘防水性能增强了,进水性下降了83%,且密封的压装也是整体压装好在压入辊壳,这样使得密封组件的弹性恢复,打开了自然间隙,更有助于提高设计间隙的精度和防水性能
密封组件数量5件,迷宫密封系统采用高分子材料,设计为整体式结构,在托辊组装前,密封组件可在安装前先压合成一个整体密封组件,简化了压装程序,也便于托辊自动生产线中机械手抓取密封组件
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