Machines, mechanical apparatus, equipment and installations for the handling of piece goods, in particular containers, namely, loading and unloading cranes for use in ports and for the transshipment of individually packaged goods, bulk goods, containers and long goods; cranes, mobile cranes, mobile port cranes which can be moved on tires, namely, mobile port cranes on pontoons, gantry cranes, lattice boom cranes, cranes being suitable for the transshipment of goods in ports, railway cranes