Grouting device in building pile foundation construction

The utility model relates to a grouting device in building pile foundation construction. Comprising a bearing plate (1), a driving motor (5), a grouting pipe (10), a supporting plate (2), a reinforcing rod (3), a mounting frame (4), a connecting disc (6), a protruding rod (7) and a direction adjusting mechanism (8), the grouting pipe (10) is connected into the direction adjusting mechanism (8), the connecting disc (6) is controlled to drive the protruding rod (7) to rotate, and the protruding rod (7) is controlled to extrude a mounting rod (801) internally provided with a guide groove to drive the grouting pipe (10) to swing in a small-amplitude reciprocating mode. According to the grouting device for building pile foundation construction, in the process of conducting building pile foundation grouting through the grouting pipe, a driving motor can be started, a connecting disc is controlled to drive a protruding rod to rotate continuously, the protruding rod can extrude a mounting rod internally provided with