Heating device for knuckle bearing testing machine

The utility model discloses a heating device for a joint bearing testing machine, the heating device for the joint bearing testing machine comprises a first sleeve, a second sleeve and a heating sheet, one end of the first sleeve is provided with a first positioning flange, the second sleeve is arranged outside the first sleeve, one end of the second sleeve abuts against the first positioning flange, and the other end of the second sleeve abuts against the heating sheet. At least one of the outer circumferential surface of the first sleeve and the inner circumferential surface of the second sleeve is provided with a heating groove, and the heating piece is arranged in the heating groove. The heating device for the joint bearing testing machine has the advantages of being capable of accurately applying temperature to a required position, reducing unnecessary heat loss, improving reliability of experimental data, being low in cost and the like. 本实用新型公开一种关节轴承试验机用加热装置，所述的关节轴承试验机用加热装置包括第一套筒、第二套筒和加热片，第一套筒的一端设有第一定位凸