Lifting roller way with engine capable of being locked

The invention relates to a lifting roller way with an engine capable of being locked. The lifting roller way comprises a transportation roller way assembly, a roller way support with the adjustable height, a plurality of stand columns and a locking mechanism. The transportation roller way assembly comprises a roller way frame, a conveying roller way and a driving motor; the tops of the stand columns penetrate through the roller way frame and are arranged in the roller way frame; the roller way frame comprises a bottom plate base, a plurality of trapezoidal sliding blocks arranged on the bottomplate base in a sliding mode, pulleys arranged on the trapezoidal sliding blocks and an air cylinder driving the trapezoidal sliding blocks to slide; the pulleys are fixedly arranged on the roller way frame; the trapezoidal sliding blocks are fixedly connected to form a sliding block assembly through linkage rods; and the locking mechanism comprises a supporting column, a rotating shaft and a locking hook, wherein the ro