Smooth-type chain-drive totally-enclosed tank cover device of automobile

The utility model discloses a smooth-type chain-drive totally-enclosed tank cover device of an automobile. The smooth-type chain-drive totally-enclosed tank cover device comprises at least six walking trolley assemblies, a chain, a tarpaulin soft top assembly, a tail sprocket assembly and a driving shaft assembly, the tail sprocket assembly is arranged at the tail part of a carriage; the driving shaft assembly is arranged at the front part of the carriage; the tail sprocket assembly is connected with the driving shaft assembly through the chain; the walking trolley assemblies are arranged on the chain; and the tarpaulin soft top assembly is arranged on the walking trolley assemblies. The smooth-type chain-drive totally-enclosed tank cover device of the automobile has the advantages of strong leakproofness, good anti-drip performance, corrosion resistance and simplicity in operation.