Cutter head and cutter suction device that use three-dimensional guide surface to reduce cutting resistance

Abstract

Provided are a cutter head and a cutter suction device that use a three-dimensional guide surface to reduce cutting resistance. The cutter head includes a mounting structure, a plurality of cutter holders 32, a cutter beam 34, a plurality of cutter arms 33 and cutter teeth 35. The mounting structure, the plurality of cutter holders and the cutter beam 34 form a frame structure of the cutter head 3. The cutter teeth 35 are carried and fixed outside the cutter head 3, and the cutter arms 33 cause the installation direction of the cutter teeth 35 to point to the tangential direction of the cutterteeth 35 rotating around a cutter driving shaft 2. The three-dimensional guide cutter tooth surface is adopted for the cutter teeth 35, so as to reduce the cutting resistance of the cutter teeth of acutter suction dredger. Since the cutter teeth 35 are the three-dimensional guide cutter teeth, in the cutter excavation construction process, the cutting into a soil layer is a gradual cutting-in process; during the cutting-in continuous proceeding process, the soil layer slide towards one side of each tooth under the action of an extrusion force and is separated from the cutter teeth, so that the sliding distance of the cutter teeth is small, and the accumulation at the tooth root position is avoided.

Description

technical field [0001] The invention belongs to the technical field of dredging engineering and marine engineering construction. Background technique [0002] With the development of economy and social life, human beings have an increasing demand for the exploration and utilization of the ocean and marine resources. These demands have prompted the rapid development of dredging engineering and various fields of marine engineering. In dredging engineering, the construction mode of cutter suction dredging is One of the typical methods of seabed material construction, the typical equipment is a cutter suction dredger, which can be used for dredging operations of various soil types. When the cutter suction dredger excavates the soil layer to be cut, the cutter suction dredger The cutter teeth cut into the soil layer, forcing the soil layer to separate and loosen. The separated and loosened soil layer enters the suction port of the cutter head under the high-power delivery of the ...

AI Technical Summary

Problems solved by technology

During the cutting process, the cutting soil layer will cut in from the tip of the reamer tooth along the direction of relative cutting motion, and migrate along the front of the reamer tooth from the tip to the root of the tooth. During the excavation process of the reamer tooth, the soil layer and The friction distance between the teeth is too long, the friction force is large, and the power consumption is large

At the same time, when excavating clay, the clay in the accumulation part will become denser and stronger under the extrusion of the sliding soil, which will easily cause the blockage of the entire reamer head

Therefore, the existing dredging and dredging cutter suction device has high energy consumption and low operating efficiency

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