Crane anchoring mechanism

The utility model relates to a crane anchoring mechanism which comprises a guide rail, a portal crane is arranged on the guide rail in a sliding mode, an anchoring seat is fixedly arranged on the guide rail, an anchoring column is connected to the anchoring seat in a threaded mode, hydraulic cylinders are fixedly arranged on the two sides of the portal crane, and oil blocking covers are fixedly arranged at the output ends of the hydraulic cylinders. Firstly, the anchoring column is connected to the anchoring base in a threaded mode, then the anchoring barrel filled with lubricating oil is fixed to the bottom of the oil blocking cover, then the hydraulic cylinder is started, the hydraulic cylinder drives the oil blocking cover to move downwards, the oil blocking cover drives the anchoring barrel to move downwards, and when the top end of the anchoring column enters the anchoring barrel and abuts against the piston, the compression spring is compressed, and the piston moves upwards; lubricating oil in the oil s