Test sample loading device of PV friction testing machine

The utility model discloses a test sample loading device of a PV friction testing machine. The test sample loading device comprises a loading part and a test sample clamping module, wherein the loading part comprises a fixed device and a movable device; the fixed device is provided with a worktable; the movable device realizes up-down movement through an oil cylinder-piston mechanism arranged on the fixed device; a spoke type load sensor is arranged at the upper end of the movable device and a pull rod is arranged at the bottom of the spoke type load sensor; the test sample clamping module comprises a bearing test sample, and a bearing test sample seat, a shaft sleeve, a shaft test sample, a bearing seat and a gasket which correspond to the bearing test sample in specification; the bearing test sample is mounted in the bearing test sample seat and is further connected with an upper transverse beam by the pull rod and the spoke type load sensor; the loading part is used for applying an upwards-pulling testing