Maintenance process for running track of trolley of electric single-beam bridge crane

The invention discloses a maintenance process for a trolley running track of an electric single-beam bridge crane, which comprises the following steps of: when the trolley running track is maintained, cutting a bent and deformed lower flange plate of the trolley running track to be maintained, and welding the lower flange plate and the lower flange plate; a new trolley running track is connected to the cutting face of the lower flange plate of the to-be-maintained trolley running track, maintenance work of the trolley running track is completed, the maintenance process does not need to be applied to steam hoisting equipment, and the problems that in a multi-layer plant of a chemical plant, many devices exist, and maintenance is complex can be solved. The problem that the maintenance cost is extremely high due to local bending deformation of the lower flange of the trolley running track of the electric single-beam crane in the prior art is solved, and meanwhile, a new trolley running track can be machined and