Fatigue strength testing device for rubber fender

The invention discloses a fatigue strength testing device for a rubber fender. The invention particularly relates to the technical field of rubber fender detection. The device comprises a detection bench, and a detection box is fixedly arranged at one end of the top of the detection table; a servo motor is fixedly arranged on one side of the detection box, a first rotating shaft is arranged on oneside of an inner cavity of the detection box in a penetrating mode, a second rotating shaft is movably arranged on the other side of the inner cavity of the detection box, one end of the first rotating shaft is fixedly connected with the end of an output shaft of the servo motor, and supporting rods are arranged in inner cavities of the first rotating shaft and the second rotating shaft in a matched mode. The device is provided with the detection box, the servo motor, the first rotating shaft, the second rotating shaft, the supporting rods, a first clamping plate, a second clamping plate, a first contact plate, a sec