Suspended bridge crane with main beam capable of translating

The utility model relates to the technical field of lifting devices, in particular to a suspension bridge crane with a translatory main beam, which comprises a suspension track beam, a cross beam, a main beam, a sliding device, a traveling device, a lifting trolley and a limiting and reinforcing device, the cross beam is perpendicular to the suspended track beams, the left end and the right end of the cross beam are arranged above the two suspended track beams in a sliding mode through the sliding devices respectively, and the sliding devices move along the suspended track beams in a reciprocating mode to drive the cross beam to move along the suspended track beams in a reciprocating mode; the main beam is connected to the cross beam through at least two walking devices and located below the suspension track beam. The at least two walking devices are arranged on the right side area of the main beam. The suspension track beam located on the right side is connected with the sliding device through the multiple l