Large combined type sand and gravel aggregate screening machine

The invention discloses a large combined type sand and gravel aggregate screening machine, and relates to the technical field of sand and gravel aggregate screening. The large combined type sand and gravel aggregate screening machine is mainly aimed at solving the problem that an existing circular vibrating screen is not conducive to increasing the yield. The large combined type sand and gravel aggregate screening machine comprises screen body supporting columns, wherein a plurality of lower screen bodies and a plurality of upper screen bodies are fixedly arranged on the screen body supportingcolumns; the lower screen bodies and the upper screen bodies are rectangular solid structures and are inclined to the left lower side; the upper screen bodies are located right above the lower screenbodies; the upper screen bodies and the lower screen bodies are identical in number and are in one-to-one correspondence; a feeding hole is formed in the right side of the top of each upper screen body; the bottom of each upp