Crawler blast cleaning machine has the following advantages: The model uses the Swiss JF's high-speed projectile cantilever centrifugal blast wheel technology, can significantly improve the cleaning efficiency and the quality of a satisfactory clean-up, with long service life, simple structure, and low failure rate; Shot blasting device body and room layout have to undergo a computer simulation of three-dimensional dynamic projectile determined to throw a projectile stream of coverage area and accurate coverage of the workpiece surface