Environmentally friendly dredging device with hobbing cutters

Abstract

The invention discloses an environmentally friendly dredging device with hobbing cutters, and belongs to the technical field of dredging engineering. The environmentally friendly dredging device withthe hobbing cutters comprises a movable cutter box, a hobbing cutter shaft system, a driving device, transmission gears, a sludge suction tube, a hinge pin and a hydraulic cylinder, wherein the movable cutter box is connected with the sludge suction tube through the hinge pin; two ends of the hydraulic cylinder are separately fixed on the movable cutter box and the sludge suction tube; the hobbingcutter shaft system comprises a plurality of rows of hobbing cutters which are arranged in the movable cutter box side by side and are successively in transmission connection through the transmissiongears; the driving device is connected with the hobbing cutter shaft system; and each row of hobbing cutters comprises a rotating shaft and cutter teeth which are spirally arranged on the rotating shaft. The tooth profile of the cutter teeth on an axial section is a straight line, the tooth profile of the cutter teeth on a normal section is an outwards projected curve, and the tooth profile of the cutter teeth on an end surface is an Archimedes spiral. Disturbance to water flow is quite small, and agitated sludge can be prevented from being diffused to the periphery; and meanwhile, the embedded depth is controlled through the cutter teeth, the thickness of a dredging layer is controlled, and bottom mud on the lower layer is protected against being damaged while a harmful sludge layer is cleared.

Description

technical field [0001] The invention relates to the technical field of dredging engineering, in particular to an environment-friendly dredging device with a hob for a self-propelled dredger used for river channel dredging. Background technique [0002] Urban rivers flow slowly and are in a relatively closed environment, and there are common problems such as silt clogging and serious pollution. Silt is the gathering place and storage warehouse of nutrients and pollutants in the river water body, and continuously releases nutrients and pollutants to the water body. The secondary pollution of the water body by the silt has become one of the main reasons for the eutrophication of the river and the outbreak of algae. With the continuous improvement of people's living standards, silt cleaning and ecological management of river courses are an important part of urban construction. [0003] When the traditional river channel dredging and dredging device works underwater, there are t...

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Problems solved by technology

[0003] When the traditional river channel dredging and dredging device works underwater, there are the following problems: (1) when the dredging operation is carried out, the disturbance to the water body will easily cause the re-diffusion of suspended matter on the surface of the silt, causing secondary pollution; (2) ) The thickness of the dredging mud layer is difficult to control, and it is easy to damage the bottom mud when removing the harmful mud layer on the surface

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