The invention discloses a warning device for municipal
engineering construction, which comprises a base plate, supporting legs, rollers, an
inverted U-shaped plate, a motor, a first rotating shaft, an incomplete gear, a rectangular frame, a first rack, and a second gear. bar, gear, second rotating shaft, support plate, first connecting rod, third rotating shaft,
helical gear, semicircular
helical rack and warning sign, the present invention is provided with motor, incomplete gear, rectangular frame, The second rack, gear, first connecting rod and third rotating shaft drive the warning sign and warning light to swing left and right through the cooperation of the above components to enhance the warning effect. There are
helical gears and a new semicircular helical rack to drive the warning sign and warning The light rotates to further enhance the warning effect. It is equipped with a disc, a second connecting rod, a third connecting rod, a knocking ball and a generating piece. Both visual and auditory warnings are provided, and the warning methods are various and the warning effect is good.