Powerful soil-breaking reamer for dredger

Abstract

The invention relates to a powerful ground-breaking reamer for a dredger. The powerful ground-breaking reamer comprises a sealing plate, cutter arms, a reamer hub, a cutter ring, cutter teeth and a tooth holder, and is characterized in that a vertical distance between a lower edge of the cutter ring and the upper edge of the reamer hub is 1051 mm; the linear shape of the cutter arms is tapered, and the taper of the cutter arms is 4:5; the lower ends of the cutter arms extend to the inner side of the cutter ring, and the lower ends of the cutter arms and the inner side of the cutter ring are welded together; the diameter of the cutter ring is 1,860 mm; a ring-protecting and wear-resisting plate is welded on the outer edge of the cutter ring; the inner side structure of the cutter ring is that the upper part is narrower than the lower part; the envelope surface of the outer contour of the tooth top of each cutter tooth is close to the taper; and the powerful ground-breaking reamer comprises seven cutter teeth. Under the conditions that the total torque is not changed and a front end structure of a cutter suction dredger bridge is not changed, the acting force of the cutter teeth to soil mass is improved by means of reduction of reamer height, reduction of cutter ring diameter and change of the linear shape of the cutter arms and the like, so that the ground-breaking capacity of the reamer is improved. The powerful ground-breaking reamer for the dredger has the advantages that the structure is simple, the implementation is convenient, the digging force is improved remarkably, the construction efficiency is high and the like.

Description

technical field [0001] The invention belongs to the technical field of dredging, in particular to a powerful soil-breaking reamer for a dredger. Background technique [0002] At present, in the dredging industry, the reamer is mainly used for the excavation of underwater soil, and the most common use is the closed reamer equipped with movable teeth. As the tonnage of ocean-going ships is getting larger and the draft is getting deeper and deeper, the depth of excavation required by dredgers is getting deeper and deeper, and the soil quality for excavation is getting harder and harder. However, most of the current cutter suction ships have insufficient reamer power, and the design of the reamer power cannot be blindly too large. When excavating soft soil, it will cause a waste of resource capacity, but this part of the cutter suction ship with insufficient reamer power is also Some hard soil adaptability is required. [0003] In engineering practice, in order to excavate som...

AI Technical Summary

Problems solved by technology

However, most of the current cutter suction ships have insufficient reamer power, and the design of the reamer power cannot be blindly too large. When excavating soft soil, it will cause a waste of resource capacity, but this part of the cutter suction ship with insufficient reamer power is also Requires certain hard soil adaptability

[0003] In engineering practice, in order to excavate some hard soil, these cutter suction boats with insufficient cutter power can only achieve the purpose of breaking the soil by adjusting the excavation process. Decrease the traverse speed and increase the speed of the reamer, so that the amount of excavation is significantly reduced, and the thickness of the slice is also significantly reduced. This can improve a certain excavation capacity, but it will cause severe fluctuations in the power of the reamer shaft, which is unintentionally increased. The dredging difficulty of the driver, also due to the large impact load, will have a bad impact on the equipment and reduce the service life of the equipment

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