Novel anti-scouring mechanism

The novel anti-scouring mechanism comprises a drainage cover, a protective shell and propellers, the periphery of a pile foundation is sleeved with the protective shell, the drainage cover is of a hollow structure, the two ends of the drainage cover are open, the drainage cover is rotatably arranged on the protective shell in a sleeving mode, the number of the propellers is two, and the propellers are arranged in the protective shell. The two propellers are located in the drainage cover and correspond to the openings in the two ends of the drainage cover respectively. Local scouring around the pile foundation can be greatly reduced, horseshoe-shaped vortexes and wake vortexes are effectively reduced, and the purpose of reducing the local scouring strength is achieved. 本发明公开了一种新型防冲刷机构，包括引流罩、防护外壳、螺旋桨，所述防护外壳套装在桩基础的外周，所述引流罩为空心结构，且所述引流罩的两端为敞口，所述引流罩可转动地套装在所述防护外壳上，所述螺旋桨设置有两个，两个所述螺旋桨分别位于在所述引流罩内，两个所述螺旋桨分别与所述引流罩两端的敞口相对应。本发明可大幅度减小桩基础周围局部冲刷，有效减小马蹄形涡旋和尾迹涡流，达到减小局部冲刷强度目的。