Suction dredge for underwater hard soil layer

Abstract

The invention relates to a suction dredge for an underwater hard soil layer, and relates to the field of bridge construction equipment. The suction dredger comprises a mud suction mechanism, a mud crushing mechanism and an anti-blocking assembly, wherein the mud suction mechanism comprises a pressurizing assembly and a mud suction pipe, the mud suction pipe penetrates through the pressurizing assembly, at least part of the two ends of the mud suction pipe extend out of the pressurizing assembly, a plurality of pressurizing holes inclining upwards in the direction from the outer wall to the inner wall are formed in the side wall of the pipe section of the mud suction pipe in the pressurizing assembly, and the pressurizing assembly is used for forming a low-pressure in the mud suction pipe through the pressurizing holes; the mud crushing mechanism comprises at least two mud crushing assemblies, the mud crushing assemblies are arranged at the bottom of the mud suction mechanism, and the mud crushing assemblies are used for crushing the underwater hard soil layer to assist the mud suction of the mud suction pipe; and the anti-blocking assembly is arranged at the bottom of the mud suction pipe, the anti-blocking assembly is used for preventing the mud suction pipe from being blocked in the mud suction process. According to the suction dredger for the underwater hard soil layer, theproblems that in the prior art, when the suction dredger works in the underwater hard soil layer, the suction dredger is poor in mud suction effect and prone to being blocked are solved.

Description

technical field [0001] The application relates to the field of bridge construction equipment, in particular to a dredger for underwater hard soil layers. Background technique [0002] Generally, in the construction of deep-water caisson foundations of bridges, the soil layer at the bottom of the caisson foundation needs to be sucked off before the caissons can be submerged. Or in the construction of steel cofferdams, conventional double-wall steel cofferdams The sinking mode of the weir in the overburden layer is usually selected as dredging sinking, so the dredging machine is widely used in bridge construction. [0003] In related technologies, air dredging facilities are widely used due to their advantages of simple construction process, low investment and low cost, and fast mud extraction speed. Its main principle is to use the large internal and external pressure difference to suck the sediment through the suction head. However, due to the small disturbance to the cove...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a dredger for underwater hard soil layer, so as to solve the problem of poor mud suction effect and easy blockage in the related art when the dredge machine works in underwater hard soil layer

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