Modular multipurpose tractor

The utility model discloses a modularized multipurpose tractor which is composed of a main power module, a connecting frame module and a functional module. The main power module mainly comprises an engine assembly, a front axle assembly, a front hub assembly, a front tire assembly, a rotating platform assembly and a hinge mechanism assembly. The functional module mainly comprises a rear drive axle assembly, a rear hub assembly and a rear tire assembly; the rotating platform assembly can drive the seat assembly and the driving platform assembly to rotate front and back, and bidirectional driving is achieved. The rear end of the hinge mechanism assembly is connected with a connecting frame module, and the length of the connecting frame module is variable. The left end and the right end of the front axle assembly and the left end and the right end of the rear drive axle assembly are each provided with one or two tail end side reduction transmission case assemblies, and the overall terrain clearance of the tracto