Dam crest bidirectional moving hydraulic traction trolley

The invention relates to a dam crest bidirectional moving hydraulic traction trolley which comprises a trolley plate, an electric winch is fixedly arranged on the trolley plate, a plurality of walking assemblies allowing the trolley plate to walk are arranged on the trolley plate, each walking assembly comprises a fixing support and a driving wheel, one end of each fixing support is fixedly connected with the trolley plate, and the other end of each fixing support is fixedly connected with the driving wheel. The driving wheels are rotationally connected with the fixing support, the driving wheels are located at the overhanging end of the fixing support, the driving wheels rotate relative to the fixing support, driving assemblies for the driving wheels to rotate are arranged on the sweeping board, and the number of the driving assemblies is the same as that of the walking assemblies. And an electric appliance control cabinet for opening or closing the electric winch is fixedly arranged on the sweeping board. T