Train resistance increasing and decreasing device based on vortex generator

The invention provides a train resistance increasing and decreasing device based on a vortex generator. The device comprises an even number of vortex generators symmetrically arranged on two sides of a train and respectively arranged on a train head train and a train tail train. The vortex generator is arranged perpendicular to the train shell in the streamline area of the train, the vortex generator is provided with a sliding control mechanism, the vortex generator is arranged at the train shell in the streamline area of the train in a rising or contracting mode through the sliding control mechanism, and the vortex generator is provided with a rotating mechanism. The rotating mechanism is used for adjusting the angle between the vortex generator and the center line of the train. Tail train resistance control can be achieved from the angle of trailing vortex control by weakening or enhancing the trailing vortex strength, meanwhile, the vortex generator arranged on the head train can break train streamlines an