Four-station swing bolster side frame magnetic particle flaw detector

The utility model relates to the field of swing bolster and side frame flaw detection, in particular to a four-station swing bolster and side frame magnetic particle flaw detector. Comprising a feeding rack, a buffering rack, a checking and discharging rack and a spraying and magnetizing rack, and a conveying motor drives a stick type conveying mechanism to drive a workpiece clamping trolley to move among the station racks; the two ends of the workpiece clamping trolley are each provided with a workpiece clamping device, and the workpiece clamping device located at one end of the workpiece clamping trolley is further provided with a rotary driving component. Workpiece clamping driving devices are fixed to the positions, corresponding to the workpiece clamping devices, of the feeding rack and the checking and discharging rack, and each workpiece clamping driving device comprises a driving motor, a driving belt wheel and a driving rotating plate. The improved swing bolster side frame magnetic particle flaw dete