Train loading chute for bulk material bin and material loading method thereof

The invention discloses a train loading chute for a bulk material bin and a material loading method of the train loading chute. The train loading chute comprises a combined ingredient loading gate, a discharging chute body, a swing chute I and a swing telescopic chute II. The combined batching loading gate comprises a seat frame, a gate I and a gate II, a vertical discharging channel is formed in the center of the seat frame, the lower end of the discharging channel is fixedly connected with a discharging groove body, a discharging port of the discharging groove body is hinged to swing chutes, and the swing chutes comprise the swing chute I and the swing telescopic chute II. Continuous discharging can be ensured, and meanwhile discharging connection of continuous carriages is facilitated; the swing chute is free in stretching and retracting and convenient to control, the material fall is reduced, raised dust is reduced, meanwhile, the chute can be used for scraping and leveling materials in the carriage when