Wellhead self-abdicating device of linear pumping unit

The utility model relates to an oil production device in oil fields, in particular to a wellhead self-abdicating device of linear pumping unit. The technical solution is that the wellhead self-abdicating device of linear pumping unit comprises a tower frame (2), a drive mechanism, a drum (5), a belt (6), a rope suspender (8), a drag rope (9), a fixed block and a connecting seat (12), wherein the drive mechanism is connected with the drum, and is arranged on the top portion of the tower frame, the wellhead belt is connected with the drag rope through the rope suspender, and the drag rope is connected with the connecting seat arranged on the tower frame after changing direction through the fixed block. The wellhead self-abdicating device of linear pumping unit has the advantages that the power of a device itself is utilized in the whole operation process, and the operation is conducted at the bottom, operators do not need to climb on the platform, thereby leading the operation to be safer and labor-saving, and special technical equipment is not needed, thereby reducing manufacture cost, and being convenient for popularization and application.