The invention relates to the technical field of municipal roads, and discloses a desilting device for water drainage of municipal roads. The desilting device comprises a vehicle body, wherein an operation box and a
carriage are fixedly connected at a box support position of the vehicle body in the sequence from left to right, a mechanical arm is arranged on the top of the operation box, a grab bucket is hoisted to the
tail end of the mechanical arm through a
pulley and a
wire rope, sliding chutes are formed in the front and rear side faces of the
carriage in a vertically symmetric manner, upper sliders and lower sliders are connected to the upper and lower sliding chutes in a sliding manner, clamping blocks are clamped to the upper sliders, water outlet grooves are formed in the clamping blocks, first
water diversion plates are fixedly connected to the bottoms of the clamping blocks, the first
water diversion plates sleeve second
water diversion plates, hinging blocks are fixedly connected to the bottoms of the second water diversion plates, and the hinging blocks are hinged to the lower sliders. With the desilting device for water drainage of municipal roads, the problems that after desilting of a desilting vehicle, the operation environment is dirty, disorderly and bad,
water resources are wasted during road washing, and road separating lines are blocked, are solved,
water resources are saved, the operation environment is clean, and the road separating lines are not blocked.