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随着我国建设事业的发展,胶带输送机的使用日益广泛。为了节约无缝钢管,提高托辊的耐磨性、耐腐蚀性以及减少机械加工量、减少维修工作量,近年来各胶带机专业生产厂及使用单位先后研究采用各种塑料、尼龙、夹布胶木等材料代替钢管和铸铁轴承座,并已取得一定的成绩。但是上述代用材料都属于绝缘体,托辊在运行过程中与胶带摩擦产生的静电不能通过托辊支架传到地下,托辊上的静电越积越多,电位越过越高,最后产生火花放电。这种情况在
With the development of China’s construction, the use of belt conveyor is increasingly widespread. In order to save seamless steel pipe, improve the wear resistance of the roller, corrosion resistance and reduce the amount of machining, reduce maintenance workload, in recent years, the tape professional production plant and the use of units have studied the use of various plastics, nylon, cloth Bakelite and other materials instead of steel pipe and cast iron bearing, and has achieved some success. However, the above substitute materials belong to the insulator. The static electricity generated by the friction between the roller and the adhesive tape can not be transmitted to the ground through the roller support. The static electricity on the roller increases, the more the electric potential increases and the spark discharge finally occurs. This situation is