Multifunctional discharging hopper of concrete mixing station

A multifunctional discharging hopper of a concrete mixing station comprises a discharging hopper upper portion and a discharging bin, a plurality of spliced discharging hopper lower portions are arranged in the discharging bin from top to bottom, each spliced discharging hopper lower portion comprises four bent plate structures hinged to the inner surface of the side wall of the discharging bin, and the top ends of the bent plate structures are hinged to the side wall of the discharging bin. Each bent plate structure comprises an inverted trapezoidal plate located on the upper portion and a square plate integrally formed at the bottom end of the trapezoidal plate, the outer surfaces of the bent plate structures are connected with the side wall of the discharging bin through the electric control telescopic devices, and when the four electric control telescopic devices extend, the four bent plate structures are fitted together to form the lower portion of the spliced discharging hopper. The lower portions of th