Double-layer nested sealing vault pouring device

The utility model discloses a double-layer nested sealing vault pouring device which comprises a pouring pipeline arranged on a trolley formwork, and the pouring pipeline has a stroke which ascends and descends in the vertical direction on the trolley formwork. A pouring opening is formed in the side portion of the pouring pipeline, the pouring pipeline comprises an inner pipe and an outer pipe, the outer pipe is arranged on the inner pipe in a sleeving mode, and the outer pipe and the inner pipe have relative rotation strokes so that the pouring opening can be opened and closed. The device is applied to the technical field of tunnel construction, the double-layer nested design is adopted, the position of the pouring opening can be staggered through relative rotation of the inner pipe and the outer pipe, so that a closed state is formed, and the problem that slurry flows backwards when the pouring opening retracts after feeding pouring is completed can be effectively solved. 本实用新型公开了一种双层嵌套式密封拱顶浇筑装置，包括设在台车模板上的