Automatic lifting mechanism for drainage well lid

The automatic lifting mechanism for the drainage well lid comprises a fixing frame, a first positioning groove is formed in the middle of the upper surface of the fixing frame, a well lid body is arranged above the fixing frame, the well lid body is composed of a top cover and a bottom cover, and the top cover and the bottom cover are fixedly connected through a plurality of reinforcing plates. According to the manhole cover, the manhole cover body can be quickly mounted and dismounted through the designed lifting assembly, so that the working efficiency when the manhole cover body is mounted or replaced is effectively improved, and when the drainage speed of the manhole cover body is insufficient, the manhole cover body can be quickly mounted and dismounted. The whole well lid body is in a state of being submerged by accumulated water, so that the water level detector between the top cover and the bottom cover is submerged, the water level detector sends a signal to control the lifting assembly to be automat