Elbow mud sucking mechanism

Abstract

The invention relates to an elbow mud sucking mechanism. The elbow mud sucking mechanism comprises a mud sucking pipe and a balancing frame. The mud sucking pipe comprises a mud sucking straight pipeand a mud sucking bent pipe. The mud sucking bent pipe is in an s shape, one end of the mud sucking bent pipe communicates with the mud sucking straight pipe, and the other end of the mud sucking bentpipe is used for sucking mud. The balancing frame is arranged on the mud sucking pipe. The mud sucking pipe is divided into the mud sucking straight pipe and the mud sucking bent pipe which communicate with each other. Because the mud sucking bent pipe is in an s shape, one end of the mud sucking bent pipe can be extended below a foot blade obliquely, and thus mud below the foot blade is effectively pumped and sucked. In consequence, by means of the elbow mud sucking mechanism, the problems in relevant technology that a deep pit can only be sucked close to the foot blade or in the vicinity ofa partition wall, collapse of low-portion soil layer in the position of the foot blade or the partition wall is caused, efficiency is low, in addition, sand influx or sudden sinking of an open caisson is also easy to induce, and the safety risk is high can be solved. The mud sucking pipe has an s-shape mud sucking bent pipe so that the overall gravity center of the mud sucking pipe is arranged ina bias manner; thus the elbow mud sucking mechanism is provided with the balancing frame so that the gravity center of the mud sucking pipe is balanced; thus occurrence of the phenomena of mud sucking pipe rotating, reversing or inclining caused by bias arrangement of the gravity center when operation is conducted is prevented; and easy operation for operating staff is guaranteed.

Description

technical field [0001] The present application relates to the technical field of bridge construction equipment, in particular to an elbow mud suction mechanism. Background technique [0002] In the construction of the deep water caisson foundation of the bridge, the soil layer at the bottom of the caisson foundation needs to be sucked off before the caisson sinks, or in the construction of the steel cofferdam, the conventional double-wall steel cofferdam is placed in the overburden The sinking method is mostly chosen as dredging sinking, so the dredger is widely used in bridge construction. [0003] see figure 1 As shown, the currently used dredger adopts the suction straight pipe C to suck the mud, which can effectively suck the mud in the middle area of ​​the caisson or cofferdam. When suctioning mud at the wall, the straight suction pipe C cannot directly suck the soil below the edge foot A or the partition wall, but can only suck out a deep pit near the edge foot A or ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides an elbow mud suction mechanism to solve the problem that in the related art, only a deep pit can be sucked out near the blade foot or the partition wall, resulting in the collapse of the lower soil layer at the blade foot or the partition wall, which is not only inefficient, but also It is also easy to induce sand turning or sudden sinking of the caisson, which is a big safety risk

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