Fixing structure of automobile engine crankshaft

The utility model relates to the technical field of automobile part processing, in particular to a fixing structure of an automobile engine crankshaft, which is characterized in that the upper end of a bottom frame is provided with a chute, a moving component is slidably connected to the chute, the bottom frame is provided with a first threaded hole, the moving component is matched with the first threaded hole, one end of a fixing column is fixedly connected to the moving component, and the other end of the fixing column is matched with the chute. The other end of the fixing column is fixedly connected to the limiting sleeve, the supporting frame is fixedly connected to the bottom frame, and the bottom frame is connected with a fixing mechanism used for fixing the crankshaft. The rotating disc drives the second threaded rod to rotate, after the second threaded rod rotates, the moving plate moves downwards under limiting of the inserting plate, the moving plate drives the fixing frame to move, the crankshaft i