Device for detecting grinding of bearing on railway wagon wheel pair

The utility model provides a device for detecting the grinding of a bearing on a railway wagon wheel pair, belonging to the technical field of the detection of the railway wagon. The device is structurally characterized in that an upper beam, a left stand column, a right stand column and a lower beam form into a sealed frame; a main hydraulic cylinder arranged on the upper beam is articulated with a movable beam, and the lower surface of the movable beam is connected with a bogie and a load bearing saddle of the railway wagon; the four corners of the lower beam are evenly provided with a plurality of driving wheels and a plurality of driven wheels which can support the wheel, each driving wheel is connected with a variable frequency motor, and each driven wheel is provided with a rotary encoder; a plurality of infrared ray temperature-detecting systems which can detect the temperature of the bearing on the wheel pair are arranged beside the driving wheels and the driven wheels; and a plurality of lifting devi