Crane machinery arm

The utility model discloses a crane machinery arm connects the solid of revolution in base top rotation, cup joints the ring gear on the solid of revolution, sets up first motor on the base, connects the driving gear on the output shaft of first motor, and the driving gear meshes with the ring gear mutually, set up flexible arm on the upper portion of the solid of revolution, the one end and the solid of revolution rotation of flexible arm are connected, the other end sets up the runner, is equipped with first cylinder on the solid of revolution, and the first cylinder other end is connected with flexible arm, set up second motor, winding roller on the solid of revolution, the output shaft of second motor drive winding roller connects the stay cord in winding roller shangrao, and stay cord and runner guide mating set up the couple at the front end of stay cord. The utility model discloses area is little, and the handling is nimble, and flexibility and mobility are good, and its control is convenient simple, is favorable to implementing, promotes and uses.