The bridge scraper reclaimer takes the materials accumulated by the stacker in the material yard, and removes the whole section from the middle of the material yard, and discharges them to the reclaiming belt conveyor to complete the second mixing of the materials. The process of reclaiming is the process of three sets of drive linkage of reclaimer walking, material rake and scraper. The working speed of the reclaimer adopts frequency conversion speed regulation, and the reclaiming amount is adjusted by walking speed regulation.