A dual selective device structure for Antarctic krill trawl
An Antarctic krill and device structure technology, applied in fishing nets, applications, fishing, etc., can solve the problems of difficult trawling operations and low integration of net gear, so as to reduce mammals and fish, promote natural harmony, and ensure safe The effect of sustainable development
Active Publication Date: 2022-03-04
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology
Due to the rigid structure of the device, the degree of fusion with the net gear is low, making it difficult to operate the trawling net, and it has been seldom used at present.
Method used
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Embodiment 1
[0037] Please refer to the attached Figure 1-Figure 6 , the present invention provides a dual selectivity device structure for Antarctic krill trawl, including Antarctic krill trawl, Antarctic krill trawl includes truss 1, upper edge class 2, lower edge class 3, side class 4, cover net 5, side wings Net 6 and body net 8, the body net comprises back net 9, side net 10 and belly net 11, is characterized in that, a net mouth position is provided between the back of the cover net and the first section front of the body net , the net port position is provided with a mammal release device 7, the mammal release device is a trapezoidal mesh, and the trapezoidal mesh is connected with the periphery of the net port position; the body net is provided with ten sections, and the ninth section of the body net adopts a conduit type Selection device structure 12, the ninth section front end of the body net is provided with a duct type induction mesh, and the front end length of the duct type...
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The invention relates to a double selective device structure of an Antarctic krill trawl net, which comprises an Antarctic krill trawl net. The Antarctic krill trawl net includes a cover net, a flank net and a body net. There is a mammal release device between the front parts, the mammal release device is a trapezoidal mesh, and the trapezoidal mesh is connected with the periphery of the mesh port; the body net has ten sections, and the ninth section of the body net adopts a catheter-type selection device structure , the front end of the ninth section of the body net is provided with a duct-type induction mesh, and the length of the front end of the duct-type selection device structure is consistent with the tension length of the net mesh at the front end of the ninth section of the body net; the rear side net of the duct-type induction mesh The clothing is cut upward on one side until the end of the duct-type induction mesh is connected to the back junction of the tenth section of the body net to form a closure; the middle part of the net of the duct-type induction mesh and the side part of the duct-type induction mesh The netting is sutured and fixed to form an oblique upward contraction catheter.
Description
technical field [0001] The invention relates to a selective device for trawl fishing gear in marine fishery, in particular to a selective device for trawl fishing gear for fishing Antarctic krill. Background technique [0002] The polar region is a strategic new frontier that integrates politics, economy, law and security with high international attention. The Antarctic continent is surrounded by vast oceans. The Antarctic Treaty and its environmental protection protocol freeze the territorial sovereignty claims and mineral mining activities of the seven countries. Only biological resources can be developed and utilized. Antarctic krill is one of the key species in the Antarctic marine ecosystem. It is rich in resources and distributed around the Antarctic. The resource reserve reaches 650-100 million tons. It is an important strategic resource that is currently concerned by countries all over the world. In order to promote the sustainable development of my country's Antarc...
Claims
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IPC IPC(8): A01K73/02A01K75/00
CPCA01K73/02A01K75/00
Inventor 黄洪亮刘健李灵智杨嘉樑
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI