Assembly auxiliary hydraulic clamping device

The utility model discloses an auxiliary hydraulic clamping device for assembly, and belongs to the technical field of auxiliary tools for assembly of vehicle body parts of rail transit vehicles. According to the utility model, the hydraulic mechanism is arranged and is used for providing assembly pressing force; the lower plywood is used for bearing the hydraulic mechanism, and the hydraulic mechanism can be separated from the lower plywood in a removable mode; the upper closing plate is arranged above the lower closing plate, the upper closing plate and the lower closing plate form a clamping area for tightly pressing parts, one side of the upper closing plate is fixedly connected with the lower closing plate so as to provide counter-acting force for the hydraulic mechanism to tightly press the parts, and the hydraulic mechanism can effectively ensure that the assembly surfaces are tightly attached without gaps when the parts are assembled, so that the assembly efficiency is improved, and the assembly quali