CN202406845U

CN202406845U - Trap net

Info

Publication number: CN202406845U
Application number: CN2012200625358U
Authority: CN
Inventors: 边红德
Original assignee: YUANJIANG WELFARE FISHERY ARTICLES CO Ltd
Current assignee: YUANJIANG WELFARE FISHERY ARTICLES CO Ltd
Priority date: 2012-02-24
Filing date: 2012-02-24
Publication date: 2012-09-05
Anticipated expiration: 2022-02-24

Abstract

The utility model discloses a tap net with the advantages of high fish entering rate, low return rate and low damage and death rate of fish stock. The trap net comprises a fence net (1) for defining a fish gathering water area, wherein an inlet of the fence net (1) is provided with a spayed net (3), and a narrow opening end of the splayed net (3) is connected with the fence net (1). The trap net is characterized in that the fence net (1) comprises 2-5 pairs of purse nets (2) which divide the fish gathering water area into 2-5 gradual sections correspondingly, and each pair of purse nets (2) in each section of the fish gathering water area take the shape of opposite arcs. According to the utility model, due to the adoption of arc-shaped fence net (1), barriers and dead corners do not exist, fishes trapped in the net are not crowded in a friction manner, so that the fatigue degree of the fish stock is lightened and the fishes can swim to a deeper place, and in addition, a bottom net, a tongue net and whisker nets are adopted, the return swimming of the fish stock is prevented effectively.

Description

Throw the net

Technical field

The utility model relates to a kind of fishing gear, specifically a kind of throwing the net.

Background technology

At present, the method for " driving and blocking, thorn, open " is fished for all and is adopted to the big water surface such as freshwater lake, reservoir, and fish gathering, a fish generally use large-scale fixation to throw the net.Throw the net for fixation in the waters, utilize current to force to fish for object to get into one type of netting gear of net capsule.Throwing the net comprises Eight characters net, leader, plays fish box, the Eight characters net fly net of inlet, leader be shaped as prismatic, the angle of corner angle is 45 °.

There are many drawbacks in traditional large-scale throwing the net: it is slow that fish is advanced in (1).Can't swim over to the depths of throwing the net with current because the prismatic angle of having thrown the net, the fish of networkings are prone to be trapped in the corner angle of throwing the net, increase the degree of fatigue of the shoal of fish, thereby be difficult to enter the terminal fish box of throwing the net.(2) return trip rate height.The ratio of the fish that returns out reaches 30%～40% from net, and particularly to return trip faster for fish on bottom layer, in deep water lake, reservoir, fishes for, and the fish on bottom layer rate of fishing for has only 8%～10%, in shallow water, fishes for, and fish on bottom layer is fished for rate and also had only 50%, and fishing efficiency is poor.(3) dead and wounded rate is high.Many corner angle because large-scale fixation has been thrown the net; Cause the fish of networking to be trapped in easily wherein, the dead and wounded rate of colliding and causing the casualties, winter to fish for fish of struggling reaches 5%～8%; The dead and wounded rate of summer high temperature phase fishing is up to 10%～15%, and the casualties of fish directly influences economic benefit greatly.

Summary of the invention

The purpose of the utility model provide a kind of advance fish fast, return that the trip rate is low, dead and wounded few the throwing the net of the shoal of fish.

The utility model is to adopt following technical scheme to realize its goal of the invention; A kind of throwing the net, it comprises the fence net that surrounds the fish gathering waters, the porch of fence net is provided with Eight characters net; The narrow opening end of Eight characters net is connected with fence net; Described fence net comprises 2 pairs～5 pairs purse seines, is divided into gradual 2 sections～5 sections with the fish gathering waters is corresponding, and every pair of purse seine in every section fish gathering waters becomes in opposite directions circular-arc.

The radian of the described circular-arc purse seine of the utility model is 2 π/3～5 π/6.

The bottom of the said Eight characters net of the utility model, fence net is equipped with spacer screen.

Because adopt technique scheme, the utility model has been realized goal of the invention preferably, it adopts the fence net of arc; Do not exist and stop and the dead angle; The fish that the networks friction of can not crowding has alleviated the degree of fatigue of the shoal of fish, swims the depth place more easily; Adopt spacer screen, floppa, palpus net again, stoped the shoal of fish to return trip effectively.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the user mode figure of the utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Can know by Fig. 1; A kind of throwing the net, it comprises the fence net 1 that surrounds the fish gathering waters, the porch of fence net 1 is provided with Eight characters net 3; The narrow opening end of Eight characters net 3 is connected with fence net 1; Described fence net 1 comprises 2 pairs～5 pairs purse seines 2 (present embodiment is 3 pairs), is divided into gradual 2 sections～5 sections (present embodiment is 3 sections) with the fish gathering waters is corresponding, in opposite directions circular-arc of 2 one-tenth in every pair of purse seine in every section fish gathering waters.Present embodiment is entered the mouth to the length in three sections terminal fish gathering waters of fence net 1 by fence net 1 and is followed successively by 100 meters, 70 meters, 50 meters.

The radian of the described circular-arc purse seine 2 of the utility model is 2 π/3～5 π/6 (present embodiment is 2 π/3).

The bottom of the said Eight characters net of the utility model 3, fence net 1 is provided with spacer screen 7.

The utility model is in order to compile the shoal of fish; Described spacer screen 7 is provided with floppa 4 (the wide of present embodiment floppa 4 is 240 ㎝) between Eight characters net 3 and fish gathering waters, make spacer screen 7 be positioned at the fish gathering waters and be positioned at the distance of Eight characters net 3 apart from the water surface apart from the distance of the water surface less than spacer screen 7.

The utility model is escaped in order to prevent that the fish dive net from jumping, and can add cover net on the described fish gathering waters, and the head rope of cover net is fixed in the headline of fence net 1.

The utility model is in order to prevent the fish migration, between the described two neighboring sections fish gathering waters, fish gathering waters and fence net 1 terminal rise 6 detections of fish box respectively be provided with must net 5 (present embodiment by fence net 1 enter the mouth to terminal each of fence net 1 must net 5 wide 120 ㎝, 60 ㎝, 30 ㎝ of being followed successively by).

The shoal of fish with current from the wide opening of Eight characters net 3 swim into, advance in the fish gathering waters that fence net 1 surrounds by floppa 4 liftings at Eight characters net 3 narrow opening places guiding trip; Because 2 one-tenth in the purse seine of fence net 1 is circular-arc, avoid generation to stop and the dead angle that fish moves about along fence net 1 smoothly; The grazing of not struggling; Simultaneously spacer screen 7 is raised to shoal with the shoal of fish, makes the shoal of fish through must net 5 trips going into next section fish gathering waters, must net 5 prevents that the shoal of fish from returning to swim go back to the preceding paragraph fish gathering waters; Because it can be that the upper end of fence net 1 adds cover net above the fish gathering waters owing to crowded break the water with anoxic that the shoal of fish collects in the phytal zone, prevent that the fish dive net from jumping to escape; A fish box 6 of fence net 1 end is gone in last trip smoothly, just can concentrate and fish for.

Claims

1. throw the net for one kind; It comprises the fence net (1) that surrounds the fish gathering waters; The porch of fence net (1) is provided with Eight characters net (3), and the narrow opening end of Eight characters net (3) is connected with fence net (1), it is characterized in that described fence net (1) comprises 2 pairs～5 pairs purse seines (2); Be divided into gradual 2 sections～5 sections with the fish gathering waters is corresponding, every pair of purse seine (2) in every section fish gathering waters becomes in opposite directions circular-arc.

2. according to claim 1 throwing the net, the radian that it is characterized in that described circular-arc purse seine (2) are 2 π/3～5 π/6.

3. according to claim 1 and 2 throwing the net is characterized in that the bottom of said Eight characters net (3), fence net (1) is equipped with spacer screen (7).