Cable well lid lifting device

When the cable well lid lifting device works, firstly, an electromagnet is started to tightly attract a well lid, a base frame is moved to drive a supporting rod to move into a supporting groove of a supporting frame, a worker applies force to press downwards through a handle, and a lever structure with a roller as a fulcrum is formed; the control panel adjusts the position of the balance weight assembly on the base frame through the adjusting mechanism according to pressure information detected by the pressure detection device, that is, the balance weight assembly is driven to be close to the handle, a certain auxiliary lifting effect is achieved, manpower loss is reduced, and a worker can easily lift the well lid and push the well lid to the empty ground to be placed; when the well lid is placed, the control panel drives the counterweight assembly to be away from the handle and close to the roller according to pressure information detected by the pressure detection device, the situation that after complete