Labor-saving manual turning structure

The utility model provides a labor-saving manual turning structure. The labor-saving manual turning structure comprises a turning crank, a sealing cover, a first-stage planetary gear set, a second-stage planetary gear set, an adapter disc and an adjustable base. According to the barring structure, kinetic energy is input into the barring structure body through the barring crank, and then the kinetic energy is output through the connecting disc. The turning structure body comprises two planetary gear sets, each planetary gear set is provided with four planet gears, and kinetic energy is output through a planet carrier. In the second-stage planetary gear set, a conical boss is arranged at the tail end of a planet carrier and can be matched with a center hole of a coiled shaft. The adapter plate can be connected with half couplings with various diameters; the utility model aims to provide a labor-saving turning structure which can be used for efficiently turning a shaft system in the assembly and detection of a