Grouting hole cover, mounting structure and main body forming mold

The grouting hole cover comprises a cylindrical grouting hole cover body with a lower opening, special-shaped grooves are symmetrically formed in the two sides of the upper portion of the grouting hole cover body, special-shaped rods are elastically arranged in the special-shaped grooves, and the special-shaped rods are in sliding connection with the special-shaped grooves; the special-shaped groove comprises a first open groove, a second open groove and a transition groove communicated with the first open groove and the second open groove, the special-shaped rod is of a U-shaped rod structure, the upper end of the special-shaped rod extends out of the first open groove to be provided with a pressing plate, and the lower end of the special-shaped rod extends out of the second open groove to be provided with a clamping block. The grouting hole cover and the grouting hole are connected in an elastic buckle mode, the bounce-off structure is arranged, and compared with traditional threaded connection, the rapid m