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近来由冲压毛坯或轧制毛坯制成的焊接滑轮在起重机制造业越来越得到推广。由于焊接滑轮的结构,绳槽或者不进行机械加工,或者仅对安放钢绳处的焊缝加工成所需形状。如果绳槽不经机械加工,会出现相当大的侧向跳动。根据PTM(技术指导文件)24·090·64—81,其跳动不得超过滑轮直径的0.001倍。但是对于轮缘为热轧型材的一批被试验焊接滑轮,在滑轮槽底直径500mm时侧向跳动达3～5mm。具有这样跳动量的滑轮在工作时,钢绳同绳槽表面的相互作用类似于绳槽同垂直于滑
Recently, welded sheaves made of pressed or rolled blanks are increasingly being promoted in the crane manufacturing industry. Due to the construction of the welding sheave, the rope groove is either not machined or only the weld seam at which the rope is placed is machined to the desired shape. If the rope groove without machining, there will be considerable lateral runout. According to PTM (Technical Guidance Document) 24 · 090 · 64-81, the runout must not exceed 0.001 times the pulley diameter. But for the rim of the hot-rolled profile of a group of test welding pulley, pulley lateral diameter of 500mm when the lateral run-up of 3 ~ 5mm. With such a pulsating pulley in operation, the interaction of the rope with the rope groove surface is similar to that of the rope groove perpendicular to the slip