Novel net dredger for removing underwater net impurities

Abstract

The invention belongs to the technical field of underwater impurity treatment facilities, and in particular, relates to a novel net dredger for removing underwater net impurities. The novel net dredger comprises two regular triangular side frames (6) oppositely arranged; connecting rods (3) are erected and mounted among three sets of angles of the two side frames (6) to form a three-edge frame structure; multiple cross beams (4) are respectively erected and mounted among three sets of edges of the two side frames (6); multiple arched rake teeth (8) are fixedly mounted on the outer sides of all the cross beams (4) in the length direction; mandrels (5) are respectively arranged on the outer sides of the middle parts of the two side frames (6); and the two mandrels (5) share the center line. The novel net dredger further comprises left and right two pull rods (2); shaft sleeves are fixedly mounted at the inner ends of the pull rods (2), and lifting rings (1) are mounted at the outer ends; and respective shaft sleeves of the two pull rods (2) respectively sleeve the mandrels (5) on two sides. The net dredger is simple in structure, convenient for operation, not easy to block and high in single net dredging amount.

Description

Technical field [0001] The invention belongs to the technical field of underwater debris treatment facilities, and in particular relates to a novel rake used for removing underwater net-type debris. Background technique [0002] In recent years, with the continuous development of port construction, the number of newly built ports in coastal areas has gradually increased. With the successive implementation of infrastructure dredging projects, the production performance of the dredgers invested has increased day by day, and mainly hydraulic dredgers. At the same time, there are usually more breeding areas and operating fishing boats in the construction sea area, and the fishermen’s work area is not fixed, and there is greater arbitrariness. Some fishing nets have been lowered into the construction area. Due to the fishermen’s year-round work, they are in the construction area. A lot of debris such as discarded fishing nets remain on the surface. There are many types of discarded ...

AI Technical Summary

Problems solved by technology

[0004] The rake with the above-mentioned structure has the following defects: the overall straight grid structure is difficult to fully adapt to the uneven water bottom, and it is not only difficult to fully hook the net debris that has settled on the bottom of the water during the process of pulling and lateral translation. And it is easy to be embedded in the rocks and reef gaps at the bottom of the water to cause jamming; the amount of net debris that can be removed by a rake with this structure is limited at a time. Especially when the rake tine located below is hooked to a certain amount of net debris, it can no longer be used continuously, and can only be hoisted to the hull for cleaning, so the efficiency of the rake is low; the rake with this structure needs A set of hoisting ropes and a set of pulling ropes, that is, auxiliary devices on the hull are complex in structure and inconvenient to operate

Images