Plastic gear wear resistance detection device

The utility model discloses a plastic gear wear resistance detection device in the technical field of gear detection, which comprises an L-shaped block, a fixed block is fixedly arranged on the outer side of the L-shaped block, a rotating rod is rotatably arranged between the fixed block and the L-shaped block, a tested gear is sleeved on the outer side of the rotating rod, a resistance groove is arranged on the outer side of the fixed block, and a bevel gear I is rotatably arranged on the inner side of the resistance groove. Multiple sets of mounting grooves are formed in the inner side of the resistance groove in a penetrating mode, threaded rods are rotationally arranged on the inner sides of the multiple sets of mounting grooves, the portions, located on the inner side of the inner groove, of the outer sides of the threaded rods are fixedly sleeved with second bevel gears, the second bevel gears are engaged with the first bevel gears, arc-shaped blocks are fixedly arranged on the outer sides of the movabl