Anti-slippage well lid mechanism and use method

The invention discloses an anti-slippage well lid mechanism and a use method. The mechanism comprises a well opening base, a well lid and an anti-slippage assembly; the anti-slippage assembly comprises a supporting rod, restraining rods, through-connection connecting rods, a sliding sleeve, a restraining disc and a tool rod, the restraining rods are distributed on the sliding sleeve in a radiationmanner, the restraining rods and the supporting rod are connected through the through-connection connecting rods, the supporting rod and the tool rod are equal in rod diameter, the length of the restraining rods is larger than the radius of a well opening, the sliding sleeve and the restraining disc are in screwed connection, the sliding sleeve can move on the supporting rod and the tool rod, a pressing type limiting buckle is arranged on the supporting rod and used for limiting the sliding sleeve, and a restraining disc positioning groove hole is formed in the center of the well lid. The method comprises the steps t