Upright post platform for maintaining high-speed train line

The invention discloses an upright post platform for maintaining a high-speed train line. The upright post platform is characterized in that a main upright post is fixed to a locomotive; a main upright post first-grade cylinder is arranged on the main upright post; a main base is arranged at the top of the main upright post first-grade cylinder; a rotating arm seat sleeves the main base; a main platform is arranged on the rotating arm seat; a main upright post second-grade cylinder is arranged under the rotating arm seat; the main working platform is arranged on the rotating arm seat; a left rotating arm and a right rotating arm are separately hinged to the two sides of the rotating arm seat; a left upright post and a right upright post are vertically arranged at the top ends of the left rotating arm and the right rotating arm; a left upright post first-grade cylinder and a right upright post first-grade cylinder are arranged in the left upright post and the right upright post; a leftfirst-grade cylinder seat