Excavation positioning device for engineering construction

The excavation positioning device for engineering construction comprises a cabinet body and a material spraying pipe, a base is welded to the bottom end in the cabinet body, a motor is installed on the top of the base, a connecting shaft rod is rotatably installed on the motor, one end of the connecting shaft rod penetrates through the top of the cabinet body, and a material box is welded to the end, penetrating through the top of the cabinet body, of the connecting shaft rod. Supporting plates are symmetrically welded to the side face of the material box in a rectangular array mode, damping rotating shafts are installed on the opposite sides of the two supporting plates in an embedded mode correspondingly, connecting rods are rotatably installed on the opposite sides of the two damping rotating shafts, material spraying pipes are installed on the connecting rods, one ends of the material spraying pipes extend into the material box, and the other ends of the material spraying pipes extend into the material bo