Bulk aggregate crushing device

The utility model discloses a large aggregate crushing device, which belongs to the field of concrete production equipment, and comprises a main body, a transmission mechanism is arranged on the main body, a screening mechanism and a crushing mechanism are arranged in the main body, the screening mechanism comprises a fixed plate, one side of the fixed plate is fixedly connected with an air cylinder, and the other side of the fixed plate is fixedly connected with a motor. A telescopic rod is connected to an output shaft of the air cylinder, a push plate is fixedly connected to one end of the telescopic rod, a sliding plate is slidably connected to the telescopic rod, and a screening slope is arranged below the sliding plate. The device has the beneficial effects that the screening mechanism and the crushing mechanism are arranged, a gap between a sliding plate on the screening mechanism and a screening slope can be slidably adjusted in a discharging plate through the sliding plate, screening conditions are co