Rolling mill drive universal joint - with square cross section bush

摘要

Joint comprises a joint bush fitted on one shaft, into which projects a square cross-section spigot extension of the second shaft. The interior of the bush has a larger square cross-section than the spigot. On the latter are fitted rectangular frames, with two parallel interior edges of which slide along the spigot and two parallel exterior edges of which, offset at 90 degrees to the first set, slide on the bush. The width of the gap between the edges in contact neither with the bush nor the spigot, and either the spigot or bush determines the max. angular relative displacement of the two shafts. The joint is simple, robust, compact and is capable of transmitting considerable torque in rolling mill drives.