Granular product e.g. concrete aggregate, supplying device for concrete mixer in construction site, has pyramid portion whose edges are fixed to tip of pyramid portion toward lower opening of hopper

摘要

The device has a pyramid portion (2) arranged inside a granular product supplying hopper (1). Faces of the pyramid portion are recessed on a part of a surface of the pyramid portion. A tip (3) of the pyramid portion is arranged to pierce bottom of flexible pockets placed on an upper opening (12) of the hopper in an operating position. Edges (2-1) of the pyramid portion are fixed to the tip of the pyramid portion toward a lower opening (13) of the hopper.