Intelligent Rolling Contact Fatigue Testing System and Testing Method Therefor

An intelligent rolling contact fatigue testing system, wherein mainly comprising a main testing system (3), a loading system (4) and a subsidiary testing system (7);

• the main testing system (3) and the subsidiary testing system (7) are provided on a same experimental platform;
• the main testing system (3) mainly comprises a main testing system base (301), a main testing shaft driving servo motor (302), a main testing box (305), a main testing system moving slider (308), a main testing system moving rail (309) and a main testing box base (310);
• the main testing box (305) mainly comprises a main shaft A (3051), two sealing end caps, a box body and a sensor race A (30510);
• the main shaft A (3051) is provided in the box body by using a bearing;
• two ends of the box body are closed by sealing end covers with oil sealing;
• two ends of the main shaft A (3051) pass through the sealing end covers at two ends of the box body, and one end of the main shaft A (3051) connects the main testing shaft driving servo motor (302), and the other end of the main shaft A (3051) is provided with a roller test specimen (306);
• the sensor race A (30510) is provided on one of the sealing end covers;
• an acceleration sensor is provided on the sensor race A (30510);
• a bottom of the main testing box (305) is fixed on the main testing system base (301);
• the main testing system base (301) is provided on the main testing system moving rail (309) by using the main testing system moving slider (308);
• the main testing system moving rail (309) is fixed on the experimental platform;
• a direction of the main testing box (305) along the main testing system moving rail (309) to slide is perpendicular to an axial direction of the main shaft A (3051);
• the subsidiary testing system (7) comprises a subsidiary testing box (705), a subsidiary testing piece (706), a subsidiary testing box base (701) and an subsidiary testing shaft driving servo motor (702);
• the subsidiary testing box (705) mainly comprises a main shaft B (7051), two sealing end caps and a box body;
• the main shaft B (7051) is provided in the box body by using a bearing;
• two ends of the box body are closed by sealing end covers with oil sealing;
• two ends of the main shaft B (7051) pass through the sealing end, covers at two ends of the box body, and one end of the main shaft B (7051) connects the subsidiary testing shaft driving servo motor (702) and the other end of the main shaft B (7051) is provided with the subsidiary testing piece (706);
• the subsidiary testing box (705) is fixed on the experimental platform;
• a shape and size of the subsidiary testing piece (706) are the same as the roller test specimen (306);
• the loading system (4) mainly comprises a servo cylinder (402) driven by a driving motor (403);
• a mounting base (405) of the servo cylinder (402) is fixed on one side of the main testing system (3);
• a pressure sensor (401) is installed at a telescopic end of the servo cylinder (402);
• the pressure sensor (401) is in contact with the main testing box (305);
• when the servo cylinder (402) pushes the main testing box (305) to move along the main testing system moving rail (309), the pressure sensor (401) measures a load loaded on the main testing box (305);
• in the experiment, the loading system (4) pushes the main testing box (305) such that the subsidiary testing piece (706) contacts the roller test specimen (306).