Well lid lifting device for pipeline maintenance

The utility model belongs to the technical field of pipeline maintenance, particularly relates to a well lid lifting device for pipeline maintenance, and aims to solve the problems of inconvenience in operation and poorer stability and protection performance when a municipal well lid is lifted, the following scheme is provided: the well lid lifting device comprises a cart, the cart further comprises a mounting cover, and the mounting cover is fixed with the top surface of the cart; the lifting sleeve is immersed into the water injection hole under the action of the lifting air cylinder, the four limiting rods are driven by the push-pull air cylinder to synchronously rotate in the rotating groove, the limiting rods are in an open state, the lifting plate is reversely driven by the lifting air cylinder at the moment, the lifting plate is driven by the four limiting rods, and the water injection hole is formed in the water injection hole under the action of the four limiting rods. The bottom of the well lid is s