Movable type top work platform for maintenance of motor train unit

The utility model relates to maintenance equipment for a motor train unit, in particular to a movable type top work platform for the maintenance of a motor train unit, wherein the maintenance work for the roof of the motor train unit is performed.A mobile guardrail and a mobile work vehicle are hung on three H-shaped steel rails on the roof of the motor train unit by a running dolly. The operation of the mobile guardrail and the mobile work vehicle is controlled by the control system of the movable type top work platform. The mobile work vehicle is equipped with a rotary safety barrier, an arm-post cantilever lifter and a work turnover panel. The mobile guardrail is equipped with a protective turnover panel and a rotary connecting device. When the mobile work vehicle stops working, the rotary safety barrier of the mobile work vehicle is placed to be transverse above the roof of the motor train unit. The rotary connecting device and the rotary safety barrier are locked in order to improve the stability thereof.