額外的鋼絲繩纏繞 / Steel ropes twined between roof and motor frame
4根穩固用鋼絲繩 / 4 stabilization ropes
輪轂連葉片防墜鉤 / Anti-falling hooks to hub & blade
自鎖式輸出軸與輪轂連接的傳動軸套 /Shaft sleeve with self locking structure
不規則滑孔的葉片擺動限位設計 /Blade up & down swing limitation by slid locking hole

葉片遇撞擊時的彈性緩沖裝置 / Buffer attached on the hub relieving the impact to fan if be hit

榫卯式葉柄與輪轂鎖緊裝置  / Inserted, self-locking design of the connection location to fasten the hub & blade handle

更多請查看大王大風扇是一款防碰撞的工業大風扇！