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根据目前露天矿胶带输送机金属管皮托辊存在的问题，采用脲醛树脂代替金属管制做托辊管皮及轴承座，从而保证其良好的使用性能，提高使用寿命。同时节约成本，提高经济效益。
According to the existing problems of the metal tube idler roller in the belt conveyor of opencast mine, the urethane tube instead of the metal tube is used to make the roller tube skin and the bearing seat so as to ensure its good performance and service life. At the same time cost savings and improve economic efficiency.