CN104381230A

CN104381230A - Longline fishing hook

Info

Publication number: CN104381230A
Application number: CN201410667726.0A
Authority: CN
Inventors: 袁军亭; 马骏驰; 宋秋红; 李琪; 徐杰
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University; Shanghai Ocean University
Priority date: 2014-11-20
Filing date: 2014-11-20
Publication date: 2015-03-04

Abstract

The invention relates to a longline fishing hook and belongs to the field of a marine fishing gear. The longline fishing hook sequentially comprises a hook tip, a hook bent portion, a hook neck, a hook base and a hook ring, wherein the hook bent portion is in a shape similar to U, the tail portion of the hook bent portion is higher than the head portion of the hook bent portion, the hook tip is positioned on the head portion of the hook bent portion, the head portion of the hook tip is higher than the tail portion of the hook bent portion, the hook tip is in a triangular pyramid shape with a pyramid vertex vertically upward, the bottom surface of the hook tip is in a triangular shape and is horizontally connected with the head portion of the hook bent portion, the hook bent portion and the hook neck are both in a shape similar to a triangular pyramid, cross sections of the hook bent portion and the hook neck are similar to a triangle, three side surfaces of the hook bent portion are in an inwards concaved circular arc shape, the cross section, similar to a triangle, of the connection portion of the hook bent portion and the bottom surface of the hook tip is smaller than the triangular bottom surface of the hook tip, the hook neck, the hook base and the hook ring are sequentially connected to form an arc shape, and the hook ring is bent towards the top of the bent tip.

Description

A kind of longline fishing fishhook

Technical field

The present invention relates to a kind of fishhook, particularly a kind of longline fishing fishhook, be applicable to fishing and catch large-scale deep-sea fish.

Background technology

Longline fishing is topmost a kind of operating type in fishing tackle, and point cloth cover is the widest, quantity and output the highest.Its basic structure is the many equidistant branch lines of tying on a main line, and end has fishhook and bait, utilizes floating, sinker device, be laid in table, in and bottom, by buoy and float, main line is laid in table, middle level; Control the length of buoy line and the outfit of settling capacity, fishing tackle is settled down to required water layer, floats with stream during operation.Common picture tuna longline, eel longline fishing etc.

Deep-sea fish longline fishing is generally suspended in about 150 meters under water, tuna is caught in order to fish, cod, the large-scale ocean property important goods such as madai food fish, it has high nutritive value and is loved by the people, and is high-grade edible product, can bring higher economic well-being of workers and staff to fisherman, so the successful capture rate of abyssal fishes is all the problem that fisherman and relevant staff pay close attention to all the time.

Abyssal fishes generally all have phototactic biological property, so generally all can be equipped with corresponding light source (searchlight etc.) under fishing boat, but abyssal environment is more complicated, and time especially to night, the effect of the light that its light source sends is not very good.And limit due to the specification of fishhook, when occurring that when large-scale deep-sea fish is caught in fishing intensity is not enough, fishhook be out of shape situation about even losing efficacy, thus there is unhook, fish body escapes, and causes certain loss to longline fishing operation.

Summary of the invention

The object of the invention is to for the problems referred to above, provide a kind of longline fishing fishhook, simplify fishhook structure, processing is simpler, and have lighting function, penetration ability is strong.

The object of the present invention is achieved like this:

A kind of longline fishing fishhook, is comprised successively by fishhook head to afterbody that bill, hook are curved, the neck of hook, hook base and shackle, wherein:

Described hook is curved in class U-shaped, and the curved afterbody of hook is higher than its head;

Described bill is positioned at the curved head of hook, and the head of bill is higher than the curved afterbody of hook;

It is characterized in that:

Described bill is vertex of a cone Rhizoma Sparganii taper vertically upward, and the bottom surface of bill is triangular in shape, and the level head curved with hook is connected;

It is similar leg-of-mutton prism class shape that the curved and neck of hook of described hook is cross section, wherein the curved base triangle being less than bill with the class triangular cross section of connecting part, bill bottom surface of hook;

The described neck of hook, hook base are connected curved with shackle successively, and shackle is towards the top bending of bill.

Wherein, the surface of the described neck of hook is coated with the luminescent film of 3-4 layer.

Wherein, curved and three ribs that the are neck of hook of described hook are all diametrically the circular arc of 1mm-1.8mm.

Wherein, curved three limits being inscribed within the base triangle of bill with three fillets of the class triangular cross section of connecting part, bill bottom surface of described hook.

Wherein, the arch that diameter is 60mm-80mm is recessed in three sides that described hook is curved are equal.

Beneficial effect of the present invention is:

1) be principal phase ratio with the cross section of traditional longline fishing fishhook with circle, the longline fishing fishhook that patent of the present invention provides, it is similar leg-of-mutton shape that its neck of hook, hook are bent into cross section, utilize leg-of-mutton firm, firm, withstand voltage feature, compared to original circular cross-section, improve its non-deformability.

2) hook is curved has done rounding process with three ribs that the are neck of hook, facilitates pickup and the vanning of staff, avoids the easy landing phenomenon that circular cross-section produces.

3) arch of indent is made in three sides that hook is curved, when making fishhook thrust fish body generation contraction of muscle, the organ of fish body cannot be close to the curved surface of hook, there will not be the situation holding fishhook, thus blood can with fish body and hook curved between gap flow out, reduce the oxygen content of fish body, thus reduce its pulling force produced, compensate for the defect of fishhook because of own specifications restriction generation intensity deficiency.

4) according to abyssal fishes, there is phototactic biological property, 3-4 layer luminescent film is plated at neck of hook place, when night fishing boat hull bottom projector light expose on fishhook time, luminescent film absorbs luminous energy and starts to store light, simultaneously, cross section due to fishhook has been made nearly triangle and have passed through the surface treatment process such as polishing, the light source come irradiation has certain reflection action, the large light source of searchlight is polymerized to small light source, when searchlight leaves longline fishing, the luminescent film be plated on the neck of hook starts luminescence, the fishhook of whole longline fishing fishing gear forms most spot lights, can rise to the bait by the more effective attraction deep-sea shoal of fish.

5) Rhizoma Sparganii taper made by bill, its penetration ability is better than circular cone, can ensure that abyssal fishes sting to pierce through rapidly fish body maxilla when rising to the bait or gulped down and pierce through its internal organ in abdomen, the base area of bill is greater than the curved upper section of hook, form 6 irregular small bores between the two, when bill pierces through fish body maxilla, fish body along bill slip into hook curved time, due to the existence in these 6 cross sections, fish body will be locked in hook curved among be difficult to shake off, this section of difference in areas instead of the effect of hangnail, effectively prevent the unhook of fish, and eliminate the processing of hangnail, save processing cost, simplify fishhook structure.

Accompanying drawing explanation

Fig. 1 is the front view of fishhook of the present invention.

Fig. 2 is the left view of fishhook of the present invention.

Fig. 3 is the vertical view of bill in the present invention.

Fig. 4 be along A-A in Fig. 1 to upward view.

Fig. 5 be along B-B in Fig. 1 to sectional view.

Fig. 6 be along C-C in Fig. 1 to sectional view.

Embodiment

Below in conjunction with specific embodiments and the drawings, set forth the present invention further.

As depicted in figs. 1 and 2, a kind of longline fishing fishhook, is comprised successively by fishhook head to afterbody that bill 1, hook are curved 2, the neck of hook 3, hook base 4 and shackle 5.Wherein, hook curved 2 is in class U-shaped, and the afterbody of hook curved 2 is higher than its head.Bill 1 is positioned at the head of hook curved 2, and the head of bill 1 is higher than the afterbody of hook curved 2.

As shown in Figure 3, bill 1 is in vertex of a cone Rhizoma Sparganii taper vertically upward, and the bottom surface of bill is triangular in shape, and level is connected with the head of hook curved 2.

As shown in Figure 5 and Figure 6, it is similar leg-of-mutton prism class shape that hook curved 2 and the neck of hook 3 are cross section, and three ribs of hook curved 2 and the neck of hook 3 are all diametrically the circular arc of 1mm-1.8mm.Wherein hook curved 2 and the class triangular cross section of connecting part, bill 1 bottom surface are less than the base triangle of bill 1, and three sides of hook curved 2 all in be recessed into the arch that diameter is 60mm-80mm.

As shown in Figure 4, hook curved 2 and three fillets of the class triangular cross section of connecting part, bill 1 bottom surface are inscribed within three limits of the base triangle of bill 1.

Specifically add man-hour, it is leg-of-mutton triangular prism that cylindrical fishhook blank milling machine is processed into cross section, be principal phase ratio with the cross section of traditional longline fishing fishhook with circle, the fishhook of this cross section based on triangle has more stable, firmer and more withstand voltage feature, and non-deformability is significantly improved.

With milling machine, bill is processed into Rhizoma Sparganii taper subsequently, ensures the sharp of bill.The penetration ability of the bill of Rhizoma Sparganii taper is better than circular cone, can ensure that abyssal fishes sting to pierce through rapidly fish body maxilla when rising to the bait or swallowed in abdomen by fish body and pierce through its internal organ.

Again the every bar rib except bill part is ground to the circular arc of diameter at 1mm-1.8mm, is convenient to pickup and the vanning of staff, avoid the easy landing phenomenon that circular cross-section produces.And the concrete size of this circular arc is determined according to the size of triangular prism, too conference causes intensity not enough, too little, can lose result of use.Specifically, the curved diameter near bill part of hook reduces gradually, finally make curved three limits being inscribed within the base triangle of bill with three fillets of the triangular cross section of connecting part, bill bottom surface of hook, namely the base area of bill is greater than the curved upper section of hook, both define difference in areas by diameter, this section of difference in areas instead of the effect of hangnail, when bill pierces through fish body maxilla, fish body along bill slip into hook curved time, fish body will be locked in hook curved among be difficult to shake off, there is the effect preventing fish from breaking off relations, and eliminate the processing of hangnail, save processing cost, simplify fishhook structure.

Then, carry out grinding by grinding machine respectively to three sides that hook is curved, be the arch of 60mm-80mm by the diameter that indent is processed in curved for hook three sides, the diameter of this arch is directly proportional to the wire diameter of fishhook.The arcuate profiles of three indents, when making fishhook thrust fish body generation contraction of muscle, fish body cannot be close to the curved surface of hook, there will not be the situation holding fishhook, thus blood can with fish body and hook curved between gap flow out, reduce the oxygen content of fish body, thus reduce its pulling force produced, compensate for the defect of fishhook because of own specifications restriction generation intensity deficiency.

Have phototactic biological property to cater to abyssal fishes, the surface of the neck of hook 3 is also coated with the luminescent film of 3-4 layer.When night fishing boat hull bottom projector light expose on fishhook time, luminescent film absorbs luminous energy and starts to store light, simultaneously, cross section due to fishhook has been made nearly triangle and have passed through the surface treatment process such as polishing, the light source come irradiation has certain reflection action, the large light source of searchlight is polymerized to small light source, when searchlight leaves longline fishing, the luminescent film be plated on the neck of hook starts luminescence, the fishhook of whole longline fishing fishing gear forms most spot lights, can rise to the bait by the more effective attraction deep-sea shoal of fish.

Claims

1. a longline fishing fishhook, comprises bill (1), hook curved (2), the neck of hook (3), hook base (4) and shackle (5) successively by fishhook head to afterbody, wherein:

Described hook curved (2) is in class U-shaped, and the afterbody of hook curved (2) is higher than its head;

Described bill (1) is positioned at the head of hook curved (2), and the head of bill (1) is higher than the afterbody of hook curved (2);

It is characterized in that:

Described bill (1) is Rhizoma Sparganii taper vertically upward in the vertex of a cone, and the bottom surface of bill is triangular in shape, and the head of level curved with hook (2) is connected;

It is similar leg-of-mutton prism class shape that described hook curved (2) and the neck of hook (3) are cross section, and wherein hook curved (2) and the triangular cross section of bill (1) connecting part, bottom surface are less than the base triangle of bill (1);

The described neck of hook (3), hook base (4) are connected curved with shackle (5) successively, and shackle (5) is towards the top bending of bill (1).

2. a kind of longline fishing fishhook according to claim 1, is characterized in that, the surface of the described neck of hook (3) is coated with the luminescent film of 3-4 layer.

3. a kind of longline fishing fishhook according to claim 1, is characterized in that, three ribs of described hook curved (2) and the neck of hook (3) are all diametrically the circular arc of 1mm-1.8mm.

4. a kind of longline fishing fishhook according to claim 3, it is characterized in that, described hook curved (2) is inscribed within three limits of the base triangle of bill (1) with three fillets of the class triangular cross section of bill (1) connecting part, bottom surface.

5. a kind of longline fishing fishhook according to claim 3, is characterized in that, three sides of described hook curved (2) all in be recessed into the arch that diameter is 60mm-80mm.