本发明给出了一种堤防限高门架的锁止结构；包括锁盒、锁舌和锁杆，锁盒固定连接在堤防限高门架的横梁内，锁盒内设有供锁舌往复移动的移动滑道，锁舌与锁盒配合，堤防限高门架的立柱开有与锁舌配合的锁槽，远离立柱方向的锁舌端面开有锁止孔，锁止孔内壁设置有锁止销；锁盒底部开有供锁杆进入的锁孔，锁杆包括管体、软轴和锁头，锁头的外部轮廓与锁舌的锁止孔契合，锁头开有外壁开有牵引槽，锁头安装在管体始端部，锁头与软轴始端固定连接，软轴套装在管体内，管体中部设有折弯。堤防限高门架的锁止结构能够开启，使堤防限高门架横梁与立柱之间分离，允许大型抢险救灾车辆在堤顶道路通行，本堤防限高门架的锁止结构主要结构强度也都特别加强。

The invention provides a locking structure of an embankment height limiting portal frame. The locking structure comprises a lock box, a spring bolt and a lock rod, the lock box is fixedly connected inthe cross beam of the embankment height-limiting portal, a moving slideway allowing the spring bolt to reciprocate is arranged in the lock box, the spring bolt is matched with the lock box, a lock groove matched with the spring bolt is formed in the stand column of the embankment height-limiting portal, and a locking hole is formed in the end face of the spring bolt; a lock hole allowing the lockrod to enter is formed in the bottom of the lock box, the lock rod comprises a pipe body, a flexible shaft and a lock head, the outer contour of the lock head is matched with the locking hole of thespring bolt, a traction groove is formed in the outer wall of the lock head, the lock head is installed at the initial end of the pipe body and fixedly connected with the initial end of the flexible shaft, and the flexible shaft is sleeved with the pipe body. The locking structure of the embankment height limiting portal frame can be opened, so that the cross beam and the stand column of the embankment height limiting portal frame are separated, large emergency rescue and disaster relief vehicles are allowed to pass through an embankment top road, and the main structural strength of the locking structure of the embankment height limiting portal frame is also particularly enhanced.