Building gap grouting device

The utility model discloses a building gap grouting device, and belongs to the technical field of grouting equipment. Comprising a grouting assembly used for conveying and guiding grout; the grouting assembly is connected to the grouting pump, and the grouting pump is used for feeding grout into the grouting assembly; a plurality of sliding assemblies are arranged on the grouting assembly, and the sliding assemblies are used for controlling the distance between the grouting assembly and the gap; a trigger assembly is arranged in the undulimeter filling assembly, and the trigger assembly is used for being in contact with the sliding assembly and triggering a signal; a plurality of lasers are arranged on the sliding assembly and used for moving and positioning the grouting assembly. Before the gap is grouted, the sliding assembly is in contact with the triggering assembly, so that a signal indicating that the grouting assembly is in contact with the gap is achieved, distance positioning is effectively carried o