Clay scarifier for cofferdam downward release

Abstract

The invention discloses a clay scarifier for cofferdam downward release. The clay scarifier comprises a rod, an inserting part and a plurality of clay scarifying rods. The inserting part is arranged at one end of the rod. The other end of the rod is a pressure bearing end. The inserting part is vertically inserted into clay by applying pressure to the pressure bearing end. The multiple clay scarifying rods are distributed in the axial direction of the rod, are rotationally arranged at the end, close to the inserting part, of the rod, are inserted into the clay along with the inserting part, and scarify the clay. The clay scarifier has an inserted state and a pull-out state, when the clay scarifier is in the inserted state, the clay scarifying rods extends obliquely upwards, and an acute angle is formed between the clay scarifying rods and the rod; and when the clay scarifying rods are in the pull-out state, a right angle is formed between the clay scarifying rods and the rod. The clayis scarified in the pull-out process of the clay scarifying rods, the clay applies pressure to the acute angle space between the clay scarifying rods and the rod, thus the clay scarifying rods are unfolded, the right angle is formed between the clay scarifying rods and the rod, and thus a clay scarifying effect is achieved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a clay ripper used for lowering cofferdams. Background technique [0002] The cofferdam is used as the surrounding water structure of the cap platform in the water. It is installed in the later stage of the pile foundation construction, and the water is pumped after the bottom is sealed to provide a "dry environment" for the cap platform construction. The construction of long-span bridges between rivers and straits has become a part of bridge construction. a trend. [0003] In the construction process of lowering the cofferdam, the interior of the cofferdam needs to be preliminarily cleaned before the lowering of the cofferdam. The clay and silt inside the cofferdam will increase the floating weight of the cofferdam, which will bring great safety hazards to the lifting and lowering of the cofferdam. This clay must be removed before the cofferdam can be lowered. [0...

AI Technical Summary

Problems solved by technology

[0003] In the construction process of lowering the cofferdam, the interior of the cofferdam needs to be preliminarily cleaned before the lowering of the cofferdam. The clay and silt inside the cofferdam will increase the floating weight of the cofferdam, which will bring great safety hazards to the lifting and lowering of the cofferdam. This clay must be removed before the cofferdam can be lowered

[0004] The existing clay removal method directly uses the dredge pump to extract the clay in the cofferdam, but because the clay is too viscous and cohesive, it is difficult to wash away and absorb it with water, and it is difficult for the dredge pump to effectively absorb the clay in the cofferdam. Clay, leading to inefficiency of cofferdam lowering

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