Discharging device

The utility model provides a discharging device which is matched with a vertical cylinder used for bridge foundation construction and a beret piece and channel steel arranged at the top of the cylinder, and comprises a base, a hopper and a supporting assembly, the base is of a rectangular frame structure, the base is perpendicular to the beret piece and horizontally arranged on the beret piece, and the hopper is arranged on the base. The base and the channel steel are arranged in parallel and abut against each other front and back to form a channel. The base is located over the cylinder. The hopper is of a trapezoid structure defined by four separated side plates and is just arranged over the interval between the two beret pieces, the four side plates of the hopper are all rotationally connected with the base and are provided with connecting shafts, and the four separated side plates of the hopper can rotate to be in a horizontal state so as to fill the upper surface of the base; the supporting assembly contr