Hydraulic control swing arm type hoisting mechanism for derrick of petroleum drilling machine

The utility model relates to the technical field of petroleum equipment, in particular to a hydraulic control swing arm type hoisting mechanism for a petroleum drilling machine derrick. Comprising a suspension arm frame, a rotating seat, a rotating oil cylinder, a telescopic oil cylinder, a hoisting steel wire rope and a pulling puffer. The suspension arm frame is arranged on the rotating seat, the rotating oil cylinder and the telescopic oil cylinder are both double-acting oil cylinders, one end of the rotating oil cylinder is connected with the suspension arm frame, the other end of the rotating oil cylinder is connected with the derrick, and the suspension arm frame can horizontally rotate under the pushing or pulling action of the rotating oil cylinder. One end of the telescopic oil cylinder is connected with the extension arm, and the other end of the telescopic oil cylinder is connected with the main body frame. The extension length of the extension arm can be controlled through extension or retraction