CN202009635U

CN202009635U - Bigeye tuna longline fishing tackle

Info

Publication number: CN202009635U
Application number: CN2010206920688U
Authority: CN
Inventors: 李灵智; 王磊; 黄洪亮; 石建高
Original assignee: East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
Current assignee: East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2011-10-19
Anticipated expiration: 2020-12-27

Abstract

Provided is a bigeye tuna longline fishing tackle, comprising units which are composed of floating balls, floater ropes, trunk lines, branch lines and fishhooks. The bigeye tuna longline fishing tackle is characterized in that the floating balls are tied to upper edge sections of the floater ropes which are divided into the upper edge sections of 1m, upper sections of 2m, middle section of 30m, lower sections of 10m and lower edge sections of 2m; the upper edge sections are connected with the upper sections via automatic buckles; the upper, middle and lower sections are connected in a slipknot manner, the lower sections are connected with the lower edge sections via swivels; the lower ends of the lower edge sections are attached with lead shots; each unit has 16 branch lines; upper edge sections of the branch lines have a diameter of 6mm and a length of 1m; upper sections of the branch lines have a diameter of 2.5mm and a length of 25m; middle sections of the branch lines have a diameter of 2.3mm and a length of 20m; lead wrapping lines have a diameter of 3mm and a length of 2m; lower sections of the branch lines have a diameter of 1.3mm and a length of 10m; the upper edge sections of the branch lines are suspended on the trunk lines via automatic buckles; the upper edge sections and the upper sections of the branch lines are in slipknot connection; the middle sections of the branch lines and the lead wrapping lines are in slipknot connection; the upper and middle sections of the branch lines are connected via swivels; the lead wrapping lines and the lower sections of the branch lines are connected via swivels; and the lower section of the branch lines are connected with the fishhooks.

Description

A kind of big-eye tunas longline fishing fishing tackle

Technical field

The utility model relates to tuna longline operation fishing gear.

Background technology

Big-eye tunas longline fishing fishing tackle general structure is by the series connection of some repetitives, is continuous several nautical miles, and the fishing tackle between adjacent two ball floats is a unit, and every unit comprises the corkline at 1 main line and two ends, some branch lines and fishhook.The main line two ends are suspended from corkline, are catenary construction, and branch line is symmetrical distribution by buckling the connection main line automatically with main line.Tuna longline operation basic premise is overlapping on water layer distributes of fishhook and target fish, and fishhook arrives the degree of depth and the fishing tackle structure is closely bound up, in the actual production because the effect of various factors of influence, the degree of depth that fishhook arrives remains further to be studied, therefore the course that the longline fishing fishhook degree of depth is constantly explored is the improved track of tuna longline gear structure; The ability and being distributed in because tuna is swum at a high speed in addition than profundal zone, directly its migration rule of research, branch water distribution layer, stock assessment are the difficult points in the academia always, often by the catch per unit effort analysis, carry out mediate inference, fishing tackle is the important support of research conclusion reliability, therefore, a kind of fishing tackle of longline fishing efficiently of design is production and researcher's diligent pursuit.

The utility model content

The purpose of this utility model is a kind of longline fishing of big-eye tunas efficiently fishing tackle of design.

The technical solution of the utility model: the cellular construction that adopts ball float, corkline, main line, branch line and fishhook to form, main line is suspended from buckling automatically of corkline lower end, is the stretched wire wire, and branch line is symmetrical distribution with main line, it is characterized in that floating ball diameter is 36cm, lie in corkline upper limb rope; 45 meters of corkline length overalls, be divided into five sections combinations: the upper limb rope is grown 1 meter, upward 2 meters of segment lengths, 10 meters of middle segment length 30 meter, time segment lengths, lower edge rope are grown 2 meters, be three strands of multifilament ropes of Fypro of 6 millimeters of diameters, the upper limb rope is connected by buckling automatically with epimere, use slip-knot to connect between epimere, stage casing, the hypomere, hypomere connects lower edge rope, the attached lead button in lower edge rope lower end by change; Each unit adopts 16 branch lines to connect 16 pieces of fishhooks; 58 meters of branch line length overalls, 6 millimeters of branch line upper limb rope diameters, 1 meter of length, 2.5 millimeters of branch line epimere diameters, 25 meters of length, 2.3 millimeters of branch line stage casing diameters, 20 meters of length, 3 millimeters of lead-sheathing linear diameters, 2 meters of length, 1.3 millimeters of branch line hypomere diameters, 10 meters of length, branch line upper limb rope upper end is suspended from main line by buckling automatically; Branch line upper limb rope all is connected by slip-knot with the lead-sheathing line with branch line epimere, branch line stage casing, and the branch line epimere all is connected with change with the branch line hypomere with branch line stage casing, lead-sheathing line, and the branch line hypomere connects fishhook.

The utility model is by the improvement of combination main line, branch line, corkline and accessory, realizes that fishing tackle fishes for performance optimization, and production practices show: the utlity model has easy to operately, can obtain the advantage of higher catch per unit effort.

Description of drawings

Fig. 1 is the structural representation of big-eye tunas longline fishing.

Fig. 2 is the corkline structural representation.

Fig. 3 is the branch line structural representation.

Embodiment

The utility model general structure is made of several repetitive series connection, fishing tackle is formed a unit between adjacent two ball floats, and each unit comprises corkline (4 among Fig. 1), 16 branch lines (7 among Fig. 1) and 16 pieces of fishhooks (6 among Fig. 1) at 1 main line (3 among Fig. 1) and two ends thereof; The main line two ends are suspended from corkline, are the stretched wire wire, and 0.37 nautical mile of adjacent two ball float level interval can be electric buoy (1 among Fig. 1) on the main line; 16 branch lines connect main line by buckling (9 among Fig. 2) automatically, are symmetrical distribution with main line, and adjacent two branch lines are 51 meters of main line spacings; 45 meters of corkline length overalls, 58 meters of branch line length overalls, 867 meters of main line length overalls.Ball float (2 among Fig. 1, Fig. 2) diameter 36cm, material is a plastic cement, lie in corkline upper limb rope (8 among Fig. 2), corkline is divided into five sections: the upper limb rope is that 1 meter, epimere (10 among Fig. 2) are that 2 meters, stage casing (11 among Fig. 2) are that 30 meters and hypomere (12 among Fig. 2) are that 10 meters, lower edge rope (14 among Fig. 2) are 2 meters, be three strands of multifilament ropes of Fypro, use slip-knot to connect between epimere, stage casing, the hypomere, the upper limb rope is connected by buckling automatically with epimere; Automatically buckle to diameter is that 0.3 centimetre of stainless steel wire is made, long 15 centimetres, wide 3 centimetres; Hypomere connects the lower edge rope by stainless steel change (13 among Fig. 2, Fig. 3); Lead button (5 among Fig. 1, Fig. 2) is adhered in lower edge rope lower end, and lead button weighs 320 grams.Branch line is divided into five sections: branch line upper limb rope (15 among Fig. 3) be 1 meter, 2.5 millimeters of branch line epimere (16 among Fig. 3) diameters, long 25 meters, 2.3 millimeters of branch line stage casing (17 among Fig. 3) diameters, 20 meters of length, 3 millimeters of lead-sheathing line (18 among Fig. 3) diameters, 2 meters of length, 1.3 millimeters of branch line hypomere (19 among Fig. 3) diameters, long 10 meters, branch line upper, middle and lower section material is polyamide monofilament, and branch line upper limb rope is three strands of polyamide multifilament ropes, 6 millimeters of diameters, the upper end is suspended from main line by buckling automatically; Branch line upper limb rope all is connected by slip-knot with the lead-sheathing line with branch line epimere, branch line stage casing, and the branch line epimere all uses the stainless steel change to be connected with branch line stage casing, lead-sheathing line with the branch line hypomere, and lead-sheathing line exocuticle is a polyamide material, 1 millimeter of interior lead-sheathing filament diameter.The branch line hypomere hangs fishhook (6 among Fig. 1, Fig. 3), and fishhook is a stainless steel material, and hook is high 5.6 centimetres, and is wide 3 centimetres, and point is high 3.2 centimetres, 5 millimeters of the diameters of axle.

Claims

1. big-eye tunas longline fishing fishing tackle, the cellular construction that adopts ball float, corkline, main line, branch line and fishhook to form, main line is suspended from buckling automatically of corkline lower end, be the stretched wire wire, branch line is symmetrical distribution with main line, it is characterized in that floating ball diameter is 36cm, lies in corkline upper limb rope; 45 meters of corkline length overalls, be divided into five sections combinations: the upper limb rope is grown 1 meter, upward 2 meters of segment lengths, 10 meters of middle segment length 30 meter, time segment lengths, lower edge rope are grown 2 meters, be 6 millimeters of diameters, three strands of multifilament ropes of Fypro, the upper limb rope is connected by buckling automatically with epimere, use slip-knot to connect between epimere, stage casing, the hypomere, hypomere connects lower edge rope, the attached lead button in lower edge rope lower end by change; Each unit adopts 16 branch lines to connect 16 pieces of fishhooks; 58 meters of branch line length overalls, 6 millimeters of branch line upper limb rope diameters, 1 meter of length, 2.5 millimeters of branch line epimere diameters, 25 meters of length, 2.3 millimeters of branch line stage casing diameters, 20 meters of length, 3 millimeters of lead-sheathing linear diameters, 2 meters of length, 1.3 millimeters of branch line hypomere diameters, 10 meters of length, branch line upper limb rope upper end is suspended from main line by buckling automatically; Branch line upper limb rope all is connected by slip-knot with the lead-sheathing line with branch line epimere, branch line stage casing, and the branch line epimere all is connected with change with the branch line hypomere with branch line stage casing, lead-sheathing line, and the branch line hypomere connects fishhook.