Biaxial loading fatigue testing machine

The invention relates to a biaxial loading fatigue testing machine. The biaxial loading fatigue testing machine is characterized in that a machine base (1) is respectively fixedly connected to a variable frequency motor (2), a frequency converter (3) and a protective cover (4); a static moment torsion shaft (5) is connected to the machine base (1) through a lock nut (18); two ends of an angle adjusting connecting rod (17) are respectively connected to the static moment torsion shaft (5) and a connecting rod component (16); one end of the connecting rod component (16) is connected to the machine base (1) through a bolt; an interface of one end of a test part (8) is fixedly connected to the static moment torsion shaft (5), and an interface of the other end is fixedly connected to a dynamic moment torsion shaft (15); the dynamic moment torsion shaft (15) is connected to the machine base (1) through a ball bearing (7) and is limited and fixed through a dust-proof lock nut (6); and one endof a rocker (14) is conne