国产辗轮式混砂机普遍存在辗轮轴承防尘盖防尘密封效果差的问题,造成轴承磨损、混砂机无法正常工作。为此,对我厂辗轮混砂机辗轮轴承防尘盖,进行了如图所示的改进。轴套与轴采用过渡配合装配,盖固定在盖座上,盖座与辗轮固定并随同辗轮转动。轴套与盖、盖座之间均留有0.5～1mm间隙,以便能保证辗轮正常转动。这种防尘盖 Domestic rolling wheel mixer generally exist dust roller dust cover dust seal effect of poor, resulting in bearing wear, sand mixer can not work properly. To this end, I plant roller wheel sand mill mixer dust cover, carried out as shown in the improvement. Sleeve and shaft with a transition fit assembly, the cover is fixed on the cover, the cover seat and the roller fixed and with the roller rotation. Sleeve and cover, cover seat are left between the 0.5 ~ 1mm gap, in order to ensure the normal rotation of the wheel. This dust cover