In the article, the analysis of the working processes of the cargo carts showed that as a result of the operation of the cranes, due to a sharp change in the height of the cross-section of the beam in all directions, tensile furnaces appear. A constructive solution to this problem is proposed. The problem was solved by developing wheel blocks and installing them on the crane's metal structures. At the same time, the development of holes in the wheel blocks in different directions allows it to be placed in different versions in the metal structure of the crane.