Elevating device for underwater concrete pouring

The utility model discloses an elevation device for underwater concrete pouring, which comprises a base, a winding wheel, a scale cable, a plumb bob, a gravity sensor, a transmission roller, a spring and a first limiting ring, the winding wheel and the gravity sensor are both horizontally arranged on the base, one end of the scale cable is connected with the winding wheel, the other end of the scale cable is connected with the plumb bob, and the transmission roller is arranged on the base. Scales are marked on the scale cable, the sizes of the scales are sequentially increased from the plumb bob end to the top, one end of the spring is connected with the gravity sensor, the other end of the spring is connected with the transmission roller, the transmission roller is arranged in the horizontal direction, the scale cable abuts against the upper surface of the transmission roller, and the first limiting ring is connected to one side of the base and located above the cast-in-place pile. The first limiting ring is