Three-degree-of-freedom fourteen-rod hydraulic excavator

The invention discloses a three-degree-of-freedom fourteen-rod hydraulic excavator. The excavator comprises a rack, a movable arm, a bucket rod, a bucket, a first rocker arm, a second rocker arm, a first rocker arm connecting rod, a second rocker arm connecting rod, a movable arm hydraulic cylinder, a bucket rod hydraulic cylinder and a bucket hydraulic cylinder; the movable arm is hinged to the rack, the first rocker arm, the second rocker arm and the bucket rod; the two ends of the first rocker arm connecting rod are hinged to the rack and the first rocker arm; the two ends of the second rocker arm connecting rod are hinged to the bucket rod and the second rocker arm; the two ends of the movable arm hydraulic cylinder are hinged to the rack and the first rocker arm; the two ends of the bucket rod hydraulic cylinder are hinged to a bucket rod hinge lug and the first rocker arm; and the two ends of the bucket hydraulic cylinder are hinged to the bucket and the second rocker arm. According to the excavator, th