Concrete wall presets entrance to a cave mould

The utility model discloses a concrete wall presets entrance to a cave mould, it comprises side board, corner fittings, end sideboard and transverse rib plate. The corner fittings comprises outer corner fittings, bolt, interior corner fittings, packing ring and nut, and two alternate welding at the interior angle department of outer corner fittings are 45 bolts of putting to one side, are equippedwith supporting round hole on the interior corner fittings. The side board be aequilate rectangular plate blocks with the end sideboard, and the length end of every plate falls 45 jiaos in the same direction as width direction, presets the semicircle orifice at the bevel edge according to outer corner fittings built -in bolt position, treats the side board and all is connected with the corner fittings carried forward four angles with holding the sideboard angle, connects three arrange in alternate's transverse rib plate between the sideboard of both sides at least. The entrance to a cave mould of above -mentioned str