Lifting vertical rail pile

The utility model discloses a chucking vertical rail pile which comprises an outer upright post and an inner upright post, wherein a lining is fixedly installed at the inner part of the upper surface of the outer upright post, the inner upright post is matched in a sliding mode in the lining, and a positioning groove is arranged at the middle part in the lining; a cross through groove is arranged on the lining below the positioning groove; a cross clamping plate which can pass through the cross through groove is connected to the lower surface of the inner upright post. The utility model is provided with the inner upright post and the outer upright post; the inner upright post can be lifted up or fall down; when the rail pile is needed, the inner upright post can be lifted from the outer upright post and fixed well. The utility model has the advantages of easy operation and good using effect. Because the outer upright post is fixed under ground, the outer upright post is as firm as a conventional rail pile, and the outer upright post has reliable safety performance. When an emergency situation happens, etc., the rail pile needs to be removed, the inner upright post can fall down by rotating the inner upright post, thereby, the utility model has the advantages of simpleness and convenience. Because the outer upright post is buried under the ground, vehicles can pass through the utility model freely. The utility model has the advantages of simple structure, low cost, good using effect, strong adaptability and easy and safe operation.