Device for measuring thickness of brake disc of rolling stock

The utility model belongs to the technical field of measuring devices, and provides a locomotive brake disc thickness measuring device, which comprises a fixed plate, a movable plate and a mounting plate, the fixed plate is connected with the movable plate through a handle and a connecting rod, one end of the handle is fixedly connected with the fixed plate, and the other end of the handle is fixedly connected with the mounting plate. The other end of the handle is in sliding connection with the connecting rod, the connecting rod is fixedly connected with the movable plate, the two clamping blocks are arranged on the fixed plate and the movable plate respectively, the mounting plate is connected with the fixed plate, a displacement sensor is mounted on the mounting plate, and the displacement sensor is connected with the movable plate. A tension spring is arranged between the displacement sensor and the moving plate, the moving plate is connected with a sliding block through a connecting plate, and the slidin