Cylinder sleeve piston ring friction pair abrasion test machine

The invention relates to a cylinder sleeve piston ring friction pair abrasion test machine. The cylinder sleeve piston ring friction pair abrasion test machine comprises a fixed guide rail, a support, a screw supporting frame and a tensile force sensor, wherein a cylinder sleeve is arranged on the support, a piston ring and a screw are arranged in the cylinder sleeve, the right end of the screw penetrates through the screw supporting frame to be connected with a linear motor, the middle part of the screw is provided with an expansion slide block which is wedged with the piston ring and a positioning plate for fixing the piston ring, the screw at one side of the expansion slide block is sequentially provided with a positioning ring, a force sensor and a loading mechanism, the loading mechanism comprises an inner sleeve and a positioning sleeve fixed on the right end of the inner sleeve, the left end of the inner sleeve is provided with a stepper motor which is connected to the left end of the inner sleeve by virtue of an outer sleeve, a piezoelectric crystal plate, a pressure spring and a threaded pressure plate are arranged in the inner sleeve, and the pressure spring is fixedly connected with the threaded pressure plate; the stepper motor rotates to drive the spring pressure plate to extrude the spring, the expansion slide block is enabled to slide and extrude the piston ring, and the friction force between the cylinder sleeve and the piston ring is continuously changed due to the reciprocating motion of the liner motor, so that the variation situation of the explosion pressure suffered by the piston ring in the real work can be simulated.