Detection tool for hub brake drum assembly

The utility model provides a detection tool for a hub brake drum assembly. The detection tool comprises a mounting rack, a positioning mandrel, an auxiliary support shaft and a detection assembly. Wherein a plurality of rollers which are arranged side by side are arranged on the mounting rack, so that the hubs can move on the rollers. A positioning hole is formed in the top of the positioning mandrel, and a first rotating piece is arranged on the periphery of the positioning mandrel, so that when the positioning mandrel moves upwards, the first rotating piece can abut against the interior of a center hole of the hub. The auxiliary supporting shaft is downwards arranged in the positioning hole in a penetrating mode, a second rotating piece is arranged on the peripheral side of the auxiliary supporting shaft, and the second rotating piece can abut against the inner wall of the center hole so that the hub can rotate relative to the positioning mandrel and the auxiliary supporting shaft. One end of the detection