阅读说明：本技术 一种大型养殖设施鱼类高效捕捞方法 (Efficient fishing method for fishes in large-scale culture facilities ) 是由 王磊 程家骅 郁岳峰 石建高 张禹 袁兴伟 于 2021-08-17 设计创作，主要内容包括：本发明提供一种大型养殖设施鱼类高效捕捞方法,包括以下步骤,步骤一,在围栏平台或者桁架网箱的左右两侧分别安装主起网机和副起网机,通过移动主、副起网机对网具进行收放、扩张、拖曳；步骤二,拖曳网具将鱼类导入网身进入囊网；步骤三,根据鱼体规格调整囊网的网目；步骤四,将囊网盖网快速开启或者闭合,步骤五,快速收获囊网中的捕捞鱼类；步骤六,收起网具。本发明通过人工放网,起网机辅助收网以实现拖曳,将鱼类导入囊网进行快速集鱼捕捞,还能实现不同网目规格囊网更换,以捕捞目标规格一定范围的鱼类,两套起网机都可以移动,可根据情况移动配合进行网具的收放、移动等操作,解除人力限制问题。(The invention provides a method for efficiently fishing fishes in a large-scale culture facility, which comprises the following steps that firstly, a main net hauler and an auxiliary net hauler are respectively arranged at the left side and the right side of a fence platform or a truss net cage, and net appliances are retracted, expanded and dragged by moving the main net hauler and the auxiliary net hauler; step two, dragging the net to guide the fishes into the net body to enter the sac net; step three, adjusting meshes of the sac net according to the specification of the fish body; step four, quickly opening or closing the sac net cover net, and step five, quickly harvesting the caught fishes in the sac net; and step six, retracting the net. According to the invention, the net is manually placed, the net hauler assists in collecting the net to realize dragging, fishes are guided into the bag net to quickly collect and catch the fishes, the bag nets with different mesh specifications can be replaced, so that fishes with a certain range of target specifications can be caught, the two sets of net haulers can move according to conditions, the operations of collecting, releasing, moving and the like of nets can be matched, and the problem of manpower limitation is solved.)

1. A method for efficiently fishing fishes in large-scale culture facilities, which is characterized by comprising the following steps,

firstly, respectively installing a main net hauler and an auxiliary net hauler on the left side and the right side of a fence platform or a truss net cage, and carrying out retraction, expansion and dragging on a net by moving the main net hauler and the auxiliary net hauler;

step two, dragging the net to guide the fishes into the net body to enter the sac net;

step three, adjusting meshes of the sac net according to the specification of the fish body;

step four, the bag net cover net is quickly opened or closed,

step five, rapidly harvesting the caught fishes in the sac net;

and step six, retracting the net.

2. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 1, wherein the efficient fishing method comprises the following steps: the main net hauler and the auxiliary net hauler are respectively connected with a wing net, the wing net is connected with the bag net through a net body, and a funnel net is further arranged in the net body.

3. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 2, wherein the efficient fishing method comprises the following steps: the wing net is a nylon warp knitted net coat, the diameter of a net wire of the wing net is 1.0mm, the side length of a mesh size square mesh of the wing net is 30mm, the edge of the upper portion of the wing net is an upper line, the upper line is a polyethylene three-strand rope with the diameter of 8mm, the upper line is provided with a floater, the upper line is connected with the floater to form a floating line, the floater is a foam floating ball with the diameter of 18 cm, the distance between the floaters is 1 meter and is fixedly connected to the upper line, the edge of the lower portion of the wing net is a lower line, the lower line is a nylon woven rope with the diameter of 6mm, the lower line is provided with an iron chain, the lower line is connected with the iron chain to form a bottom line, and the specification of the iron chain is 0.5-1 kg/m.

4. The efficient fishing method for large-scale aquaculture facility fishes according to claim 3, characterized in that: the wing nets are connected to two sides of the front opening of the net body, sleeve lines are arranged at two ends of each wing net, one ends of the sleeve steels are respectively connected with the upper lines and the lower lines, the other ends of the sleeve steels are connected with drag steels, and the drag steels are respectively fixed with the main net hauler and the auxiliary net hauler.

5. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 4, wherein the efficient fishing method comprises the following steps: the length of the single-side net is 50 meters, and the height of the single-side net is 15 meters.

6. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 2, wherein the efficient fishing method comprises the following steps: the lower part of the front opening of the net body is provided with a net opening bottom line, the net opening bottom line is formed by connecting a nylon braided rope with the diameter of 6mm with an iron chain, and the specification of the iron chain is 1.5-2.5 kg/m.

7. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 6, wherein the efficient fishing method comprises the following steps: the net body is a polyethylene net, the diameter of the net wire of the net body is 2.0mm, the mesh size of the net body is the same as that of the wing net, the circumference of the front opening of the net body is about 50m, and the net body is a fish guiding part in the middle of the wing net and the sac net.

8. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 2, wherein the efficient fishing method comprises the following steps: the netting specification of the funnel net is the same as the net body, the front opening of the funnel net coincides with the front opening of the net body, a steel rope at the inner edge of the funnel net is pulled on a lacing line of the net body through a funnel line to form a funnel opening, and the circumference of the funnel opening is 20 meters.

9. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 2, wherein the efficient fishing method comprises the following steps: the bag net is positioned at a fish collecting position at the rear part of the net body, the bag net consists of a floating frame, a cover net zipper, a cover net edge line, a bag net cover net, a bag net opening zipper, a bag net bottom net, a sinker line and a bag net side net, the bag net is connected with a net body rear opening zipper on a net cover opening at the rear part of the net body through the bag net opening zipper, the bag net cover net is positioned on a top net at the upper part of the bag net, the cover net zipper is arranged in the center of the bag net cover net, the cover net zipper is a high-strength plastic zipper, the cover net edge line is positioned at the peripheral edge of the bag net cover net, the floating frame is a square frame welded by HDPE pipes, the outer diameter of the HDPE pipe is 50mm, the size of the square frame is 2 meters long and 2 meters wide, the square frame is connected on the cover net edge line, the bag net bottom net is a net cloth positioned at the bottom of the bag net, and the sinker is formed by connecting the iron net edge lines and the four-net clothes of the bag net bottom net, the specification of the iron chain is 0.5-1kg/m, the sinker line is matched with the floating frame to open the sac net, the sac net side nets are net clothes on four side surfaces of the sac net, and the sac net side nets are polyethylene warp knitted nets.

10. The efficient fishing method for large-scale aquaculture facility fishes as claimed in claim 2, wherein the efficient fishing method comprises the following steps: the main net hauler comprises a mobile platform, rollers are installed below the mobile platform, a fuel oil engine for providing net hauler power and a winch traction rope or a rotating wheel of a netting are borne on the mobile platform, and the main net hauler and the auxiliary net hauler are consistent in structure.

Technical Field

The invention relates to the field of fish catching, in particular to a high-efficiency fish catching method for large-scale culture facilities.

Background

The fish catching of culture facilities such as deep water net cages and the like is simple and convenient, and due to the small culture space, personnel can stand on the net cage frame to gather fish by adopting a small enclosing and pulling net and then catch the fish by adopting fishing gear such as a small hand-dip net and the like. With the upsizing of the culture facilities, such as large-scale culture facilities like fence culture facilities, due to the wide water surface of the culture sea area and the complex conditions of water depth and topography, the cultured fishes are difficult to be caught by adopting a small purse net lifting and catching mode, while the large-scale fishing gear like purse nets, trawl nets and gill nets needs to be equipped with large ships and supporting equipment and is difficult to be used in the large culture facilities, and the fishes caught by the gill net fishing gear are easy to damage and die the fish bodies, so the fishing gear suitable for the large culture facilities and the use method thereof need to be designed to meet the lifting and catching requirements.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a method for efficiently fishing fishes in large-scale culture facilities, which aims to solve at least one technical problem.

The technical scheme of the invention is as follows: a method for efficiently fishing fishes in large-scale culture facilities, which is characterized by comprising the following steps,

firstly, respectively installing a main net hauler and an auxiliary net hauler on the left side and the right side of a fence platform or a truss net cage, and carrying out retraction, expansion and dragging on a net by moving the main net hauler and the auxiliary net hauler;

step two, dragging the net to guide the fishes into the net body to enter the sac net;

step three, adjusting meshes of the sac net according to the specification of the fish body;

step four, the bag net cover net is quickly opened or closed,

step five, rapidly harvesting the caught fishes in the sac net;

and step six, retracting the net.

According to the invention, the net is released manually, the net hauler assists in net retraction to realize operations such as towing, and the like, fishes are guided into the bag net to collect and catch fishes quickly and efficiently, the bag nets with different mesh specifications can be replaced, so that fishes with a certain range of target specifications can be caught, the two sets of net haulers can move, the net haulers can move and cooperate to perform operations such as retraction, movement and the like of nets according to conditions, and the problem of manpower limitation is solved.

Preferably, the main net hauler and the auxiliary net hauler are respectively connected with a wing net, the wing net is connected with the bag net through a net body, and a funnel net is further arranged in the net body.

The wing net is used for guiding the fishes into the net body to enter the sac net, and the funnel net can reduce the escape rate of the fishes after entering the net opening.

Preferably, the wing net is a nylon warp knitted net, the diameter of a net wire of the wing net is 1.0mm, the side length of a square mesh of the mesh size of the wing net is 30mm, the upper edge of the wing net is an upper line, the upper line is a polyethylene three-strand rope with the diameter of 8mm, the upper line is provided with a floater, the upper line is connected with the floater to form a floating line, the floater is a foam floating ball with the diameter of 18 cm, the floater is fixedly connected to the upper line at the interval of 1 m, the lower edge of the wing net is a lower line, the lower line is a nylon braided rope with the diameter of 6mm, the lower line is provided with an iron chain, the lower line is connected with the iron chain to form a bottom line, and the specification of the iron chain is 0.5-1 kg/m.

Preferably, the wing net is connected to two sides of the front opening of the net body, sleeve ropes are arranged at two ends of the wing net, one end of each sleeve steel is connected with the head rope and the foot rope respectively, the other end of each sleeve steel is connected with the dragging steel, and the dragging steel is fixed with the main net hauler and the auxiliary net hauler respectively.

The traction rope is tightened by adopting the main net hauler and the auxiliary net hauler to pull by hand, and the models of the main net hauler and the auxiliary net hauler are matched according to the size of the pulling force when the net is hauled.

More preferably, the length of the one-sided net is 50m, and the height of the one-sided net is 15 m. The height of the net is 1.5-2.0 times of the water depth, and the height of the wing net is 15 meters, so that the net is ensured to cover the longitudinal water surface under a certain stress condition, and the fish is prevented from escaping.

Preferably, the lower part of the front opening of the net body is provided with a net opening bottom line, the net opening bottom line is formed by connecting a nylon braided rope with the diameter of 6mm with an iron chain, and the specification of the iron chain is 1.5-2.5 kg/m.

Further preferably, the net body is a polyethylene net, the diameter of the net line of the net body is 2.0mm, the mesh size of the net body is the same as that of the wing net, the circumference of the front opening of the net body is about 50m, and the net body is a middle fish guiding part connecting the wing net and the sac net.

Preferably, the size of the net of the funnel net is the same as that of the net body, the front opening of the funnel net coincides with that of the net body, a steel rope at the inner edge of the funnel net is pulled on a lacing line of the net body through a lacing line of the funnel to form a funnel opening, and the circumference of the funnel opening is 20 m.

Preferably, the bag net is a fish gathering part positioned at the rear part of the net body, the bag net is composed of a floating frame, a cover net zipper, a cover net edge line, a bag net cover net, a bag net opening zipper, a bag net bottom net, a sinker net and a bag net side net, the bag net is connected with a net body rear opening zipper on a net cover opening at the rear part of the net body through the bag net opening zipper, the bag net cover net is positioned on a top net at the upper part of the bag net, the cover net zipper is arranged in the center of the bag net cover net, the cover net zipper is a high-strength plastic zipper, the cover net edge line is positioned at the peripheral edge of the bag net cover net, the floating frame is a square frame welded by HDPE pipes, the outer diameter of the HDPE pipes is 50mm, the size of the square frame is 2 meters long and 2 meters wide, the square frame is connected to the cover net edge line, the bag net bottom net is a net cloth positioned at the bottom of the bag net, and the sinker is formed by connecting the edge lines of the net clothes of the bag net bottom net and the iron chains, the specification of the iron chain is 0.5-1kg/m, the sinker line is matched with the floating frame to stretch the sac net, the sac net side nets are net clothes on four side surfaces of the sac net, the sac net side nets are polyethylene warp knitted nets, and meshes of the sac net side nets are selected according to requirements.

The sac net forms a self-supporting structure by utilizing the frame and the sinkers, so that the sac net is also of an expanded structure under the condition of no water flow, and the internal fish is prevented from being extruded to cause scratches; the cover net of the sac net is of a zipper type structure, can be opened or closed quickly, and is convenient for quickly harvesting internal fishes in water after being caught; the connection between the sac net and the net body is also connected and disassembled by utilizing a zipper structure, so that the sac net is convenient to replace; the mesh size of the bag net can be designed in various specifications according to the requirements of the specifications of the fished fish body, and the bag net can be quickly replaced by using the zipper type structure when needed.

Preferably, the bag net opening zipper, the net body rear opening zipper and the cover net zipper are respectively provided with zipper teeth, and the zipper teeth are of a latch structure of a high-strength plastic zipper.

Preferably, the main net hauler comprises a mobile platform, rollers are mounted below the mobile platform, a fuel oil engine for providing net hauler power and a rotating wheel for winching a rope or netting are loaded on the mobile platform, and the main net hauler and the auxiliary net hauler are consistent in structure.

Drawings

FIG. 1 is a schematic view of efficient fishing of farmed fish on a large fence platform.

Figure 2 is a schematic view of a fishing net.

Fig. 3 is a schematic view of the connection between the bag net and the net body.

Fig. 4 is a schematic view of a main net hauler.

In the figure: 1. the net cage comprises a main net lifting machine 2, a wing net 3, a floater 4, an upper line 5, a lower line 6, a net opening bottom line 7, a funnel opening 8, a bag net 9, a net body 10, a funnel net 11, a sleeve line 12, a warp line 13, an auxiliary net lifting machine 14, a fence platform 15, a floating frame 16, a cover net zipper 17, a funnel line 18, a cover net edge line 19, a bag net cover net 20, a bag net opening zipper 21, zipper teeth 22, a net body rear opening zipper 23, a bag net bottom net 24, a sinker line 25, a bag net side net 26, a rotating wheel 27, an oil burner 28, a roller 29 and a moving platform.

Detailed Description

The invention will be further described with reference to the accompanying drawings, in which the cultivation facilities are fences, and the water depth is 10 m.

Referring to fig. 1-4, the invention is composed of a main net puller 1, a wing net 2, a floater 3, an upper line 4, a lower line 5, a net opening bottom line 6, a funnel opening 7, a bag net 8, a net body 9, a funnel net 10, a sleeve line 11, a warp line 12, a secondary net puller 13, a fence platform 14, a floating frame 15, a cover net zipper 16, a funnel line 17, a cover net edge line 18, a bag net cover net 19, a bag net opening zipper 20, zipper teeth 21, a net body rear opening zipper 22, a bag net bottom net 23, a sinker line 24, a bag net side net 25, a rotating wheel 26, a fuel oil engine 27, a roller 28 and a moving platform 29.

The main net hauler 1, the auxiliary net hauler 12, the winch of the net such as the wing net 2 and the like are provided with power devices such as a fuel oil engine 27 and the like, and the baitai needs to be connected with the limitation of using a power supply.

The wing net 2 is a nylon warp-knitted net, the diameter of a net wire is 1.0mm, the side length of a square net mesh with the mesh size is 30mm, an upper net 4 is provided with a floater 3, a lower net 5 is provided with an iron chain, the length of the net is set according to the condition, the length of the wing net on the single side of the enclosure in the scheme is 50 meters, the height of the net is 1.5-2.0 times of the water depth, the height of the wing net in the design is 15 meters, the net is guaranteed to cover the longitudinal water surface under the certain stress condition, and fish escape is prevented. The wing net is connected with two sides of the front opening of the net body 9, and the other two ends are provided with sleeve lines 11.

The floater 3 and the head line 4 of the wing net 2 are connected with the floater to form a head line, so that the upper part of the netting is ensured to float on the water surface, the specification of the floating ball is a foam floating ball with the diameter of 18 cm, and the floating ball is connected and fixed on the head line 4 at the interval of 1 m.

The head line 4, the lacing line at the upper edge of the net of the wing net 2 and the polyethylene three-strand rope with the diameter of 8mm are used for enhancing the stress of the net and are connected with the floater 3 to form the floaterline.

The lower line 5, the lacing line at the lower edge of the netting of the wing net 2 and the nylon braided rope with the diameter of 6mm are connected with an iron chain to form the bottom line, the specification of the iron chain is weighted according to the requirement, and the specification of the iron chain is generally 0.5-1 kg/m.

The net opening foot line 6 and the lower foot line with an opening at the front part of the net body 9 are formed by connecting an iron chain by using a nylon braided rope with the diameter of 6mm, the specification of the iron chain is weighted according to the requirement, and the specification of the general iron chain is 1.5-2.5 kg/m.

The funnel mouth 7 and the inner opening of the funnel net 10, i.e. the opening formed by the steel ropes at the inner edge of the funnel net 10 being tied on the lacing line of the net body 9 through the funnel line 17, have a circumference of about 20 m.

The fish collecting part at the back part of the net body 9 of the sac net 8 consists of a floating frame 15, a cover net zipper 16, a cover net edge line 18, a sac net cover net 19, a sac net opening zipper 20, a sac net bottom net 23, a sinker line 24 and a sac net side net 25.

The net body 9 is made of polyethylene netting, the diameter of the net wire is 2.0mm, the mesh size is the same as that of the wing net 2, the circumference of the front opening is about 50m, the middle part of the front opening is a fish guiding part for connecting the wing net 2 and the sac net 8, and the funnel net 10 is designed in the front opening.

The funnel net 10 has the same netting specification as the net body 9, the front opening is superposed with the opening of the net body 9, and the perimeter of the inner funnel opening 7 is 20 meters.

The two ends of the sleeve line 11 and the wing net 2 are connected with the steel ropes of the net upper line 4 and the net lower line 5, and the other end is connected with the towline 12.

The trawl line 12 is used for drawing the steel rope of the wing net 2 and is connected to the sleeve line 11, the trawl line is drawn up by the aid of the main net puller 1 and the auxiliary net puller 13, and the type of the trawl line is matched with the type of the trawl line according to the size of the pulling force when the trawl is drawn up.

The auxiliary net hauler 13 is the same as the main net hauler 1 and assists in winding the net.

The enclosure platform 14 is a large-scale culture enclosure, the column piles are connected with the netting enclosure to enclose the sea area for fish culture, and a culture management platform is built on the upper portions of the column piles and is provided with culture supporting facilities of a crane. The area of the water body of the fence is usually more than 1 ten thousand square meters, the water depth generally exceeds 6 meters, and the fence described in this embodiment has a water depth of 10 meters.

The floating frame 15 is a square frame formed by welding HDPE pipes, the outer diameter of each pipe is 50mm, the size of the frame is 2 meters in length and 2 meters in width, and the frame is connected to the net covering edge line 18.

The cover net zipper 16 and the high-strength plastic zipper arranged in the middle of the capsule net cover net 19 are convenient for opening and closing the cover net and taking out internal fishes.

The funnel line 17 is a steel rope for pulling the funnel mouth 7 and is connected to the internal edge line of the funnel net 10 and the force line of the net body 9.

The net cover edge line 18 and the force line at the edge of the bag net cover net 19 are connected with the floating frame 15.

The bag net cover net 19 and the top net on the upper part of the bag net are provided with cover net zippers 16 which can be opened conveniently to take fish.

The bag net opening zipper 20 and the high-strength plastic zipper connect the bag net with the net opening at the rear part of the net body 9, so that the bag net 8 can be conveniently replaced.

Zipper teeth 21, a latch structure of a high-strength plastic zipper.

A zipper 22 at the back of the net body and a high-strength plastic zipper connected with the opening at the back of the net body 9.

A bag net bottom net 23 and a net at the bottom of the bag net 8.

The sinker line 24, the edge lines of the four sides of the net of the bag net bottom net 23 and the iron chain form the sinker line, the specification of the iron chain is generally 0.5-1kg/m, and the bag net 8 is opened by matching with the floating frame 15.

The side net 25 of the bag net and the net clothes on the four sides of the bag net 8 are polyethylene warp knitted nets, and meshes are selected according to requirements (made according to the relation between the body width and the body weight of different fish species).

The turning wheels 26, the net hauler winches the wheels of the rope or netting.

And the oil engine 27 is used for providing power for the net hauler.

The wheels 28, the wheels at the bottom of the net hauler, enable the net hauler to move.

The mobile station 29, the platform carrying the net hauler oil engine 27 and the wheel 26, is free to move over the railing platform 14 by means of the rollers 28.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.