Bogie

In a bogie for supporting and guiding a heavy load movable on rails, such as a crane, which bogie includes a number of wheels cooperating in pairs and which are mounted in a wheel frame, and a load supporting foot, and at least one further frame including at least a main frame, for supporting the load in uniformly divided fashion on said wheel frames, the improvement comprising means for transmitting the load through the supporting foot to the main frame and from there to the wheel frames, said transmitting means including a pair of cylindric surfaces of different radius of curvature engaging in line contact, such that the first cylindric surface supports the second cylindric surface, one of said pair of cylindric surfaces being on said main frame, the other of said cylindric surfaces being on the adjacent one of a series of members in load transmitting engagement between said load and wheels, said series of members including said foot, main frame, and wheel frames.