Shell locking device applied to spraying robot

The invention discloses a shell locking device applied to a spraying robot, and relates to a robot locking device. The shell locking device comprises a fixing hook, a base, a U-shaped connecting part,a hanging buckling part, a hanging rod, elastic connecting parts and a buckling part; the fixing hook is arranged on a cover body; the base is arrange on that shell, the two sides of the top of the base are separately vertically provided with first connecting blocks; and a first through hole is formed in the connecting block; two sides of the bottom of the base are separately vertically providedwith second connecting blocks, and a connecting rod is arranged between the tops of the second connecting blocks; the top of the U-shaped connecting part is provided with a first hinge rod, and the first hinge rod passes through the first through hole and a second through hole and is hinged with the first connecting block; the hanging buckling part comprises a second hinge rod which is arranged ina third through hole and e