The invention provides a constructional
engineering sound insulation device with multiple protection structures. The device comprises a
noise reduction
moving frame, universal
brake wheels, U-shaped push rods, a fixed support hole, an adjustable
noise reduction seat structure, an adsorbable
noise reduction cover structure, a protective dustproof
noise reduction box structure, a rotatable fixed warning seat structure, a protection block, a shielding cover, a fixed rod, a positioning nut, a locking nut, a suction fan, a connecting rod and a fixed nut, wherein the universal
brake wheels are connected to the four corners of the lower end of the
noise reduction moving frame through bolts respectively. According to the constructional
engineering sound insulation device, through arrangement of anoise reduction adsorption box, a second fixing
pipe, an adsorption cover, a corrugated hose, a connecting conveying
pipe, the
noise reduction moving frame and the suction fan, the
suction force generated when the suction fan works in the working process is favorable for sucking away air around equipment through cooperation of the noise reduction adsorption box, the second fixing
pipe, the adsorption cover, the corrugated hose and the connecting conveying pipe, noise is prevented from being spread through air to pollute the
working environment, and meanwhile the equipment can be cooled conveniently.