CN110394294B

CN110394294B - Fishing goods dumping and sorting equipment for trawl or purse seiner and using method thereof

Info

Publication number: CN110394294B
Application number: CN201910594901.0A
Authority: CN
Inventors: 刘文质; 黄维杨; 黄守雄; 刘洁; 江金春
Original assignee: Fujian Taiyuan Shipping Co ltd
Current assignee: Fujian Taiyuan Shipping Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2022-04-05
Anticipated expiration: 2039-07-03
Also published as: CN110394294A

Abstract

The invention discloses equipment for dumping and sorting fishing goods of a trawl or purse seiner and a using method thereof, and the equipment comprises a supporting plate, a turnover plate and a supporting table, wherein two supporting slide bars are arranged on the upper side of the supporting plate, a weighing sensor is arranged on the supporting plate, fixing lugs are arranged on two sides of the supporting plate and two sides of the supporting slide bars, a material lifting motor is arranged at the upper ends of the fixing lugs on the supporting slide bars, a material pushing screw is arranged on the material lifting motor, an electric slide block is arranged at the upper end of the supporting slide bars, hanging rods are arranged on the electric slide block and the supporting slide bars, a baffle is arranged at the rear end of the supporting slide bars, and a limiting block is arranged between the supporting plate and the baffle. The invention has the beneficial effects that: rational in infrastructure, equipment adopts roll formula letter sorting mode, has improved work efficiency, and easy operation can automatic weighing, emptys and sorts, alleviates working strength, uses the layer board and rises the material motor and can empty fast, improves and emptys efficiency.

Description

Fishing goods dumping and sorting equipment for trawl or purse seiner and using method thereof

Technical Field

The invention relates to the field of fishing goods dumping and sorting, in particular to fishing goods dumping and sorting equipment for a trawl or purse seiner and a using method thereof.

Background

At present, most of fresh sea fishes in domestic markets are fished back by a fishing boat for offshore operation, the fishing goods need to be dumped and sorted after being fished, but the fishes are generally dumped into a large pond and sorted step by step.

Because offshore fishing boats in China are generally small in ship type and are generally trawl or purse nets, the space for sorting and dumping on the offshore small fishing boats is limited, so that dumping and sorting are needed on land, but manual dumping and sorting and time waste are used, and resource waste is caused.

Disclosure of Invention

The invention aims to solve the problems and provide fishing goods dumping and sorting equipment for a trawl or purse seiner, which improves the working efficiency of dumping and sorting the fishing goods.

The invention realizes the purpose through the following technical scheme:

a trawl or purse seiner fishing goods dumping and sorting device comprises a supporting plate, a turnover plate and a supporting table, wherein two supporting slide bars are arranged on the upper side of the supporting plate, a weighing sensor is arranged on the supporting plate, the model of the weighing sensor is LSZ-S61, fixing lugs are arranged on two sides of the supporting plate and two sides of each supporting slide bar, a lifting motor is arranged at the upper ends of the fixing lugs on the supporting slide bars, a material pushing screw is arranged on the lifting motor, an electric slider is arranged at the upper ends of the supporting slide bars, hanging rods are arranged on the electric slider and the supporting slide bars, a baffle is arranged at the rear end of each supporting slide bar, a limiting block is arranged between the supporting plate and the baffle, and a sliding chute is arranged between the limiting block and the baffle;

the rear end of the baffle is provided with the supporting plate, the upper end of the supporting plate is provided with the turnover plate, mounting frames are arranged on two sides of the turnover plate, a lifting motor is arranged on the mounting frames, the lower end of the lifting motor is provided with a lifting screw rod, the rear side of the turnover plate is provided with the supporting table, a turnover connecting plate is arranged between the turnover plate and the supporting table, the inner side of the supporting table is provided with a telescopic cylinder, one side of the supporting table is provided with a controller, the model of the controller is FX3G, and the lower end of the supporting table is provided with two supporting columns;

rails are mounted at the rear end of the supporting table, a first leakage roller is arranged between the two rails, a second leakage roller is arranged on the rear side of the first leakage roller, a third leakage roller is arranged on the rear side of the second leakage roller, the number of the first leakage roller, the number of the second leakage roller and the number of the third leakage roller are two, a chain box is arranged on one side of each rail, a motor is arranged on each chain box, a driving chain wheel is arranged in each chain box, six driven chain wheels are arranged at the rear end of each driving chain wheel, a chain is arranged between each driving chain wheel and each driven chain wheel, and collecting boxes are arranged on the lower sides of the first leakage roller, the second leakage roller and the third leakage roller;

the first roller, the second roller and the third roller are provided with leakage holes, the inner side of the third roller is provided with a central plate, and a connecting rod is arranged between the central plate and the third roller.

Preferably: the connecting rod weld in center plate with the third leaks the roller, the connecting rod material is 45 # steel, center plate key connection in driven sprocket.

So set up, the connecting rod plays the supporting role, has guaranteed joint strength through the welding.

Preferably: the leak hole integrated into one piece in first leak the roller, the second leaks the roller, the third leaks the roller, first leak the roller, the second leaks the roller, the third leaks on the roller leak the leak hole diameter grow gradually.

So set up, the small opening plays the filtering action, and integrated into one piece stability is good.

Preferably: the driven chain wheel is rotationally connected with the chain box, the driving chain wheel is connected with the motor in a key mode, and the driven chain wheel is connected with the chain.

So set up, passive sprocket, drive sprocket plays the transmission effect, rotates to connect the work and is smooth.

Preferably: the support table is welded on the fence and the support column, and the controller is connected to the support table through screws.

So set up, the brace table plays the supporting role, the rail plays and shelters from the effect, has guaranteed joint strength through the welding.

Preferably: the turnover connecting plate is rotatably connected with the supporting platform, and the telescopic cylinder is in pin connection with the supporting platform.

So set up, the upset connecting plate plays the connection effect, rotates to connect and has guaranteed job stabilization nature.

Preferably: the mounting bracket through the welding with the returning face plate is connected, elevator motor pass through bolted connection in the mounting bracket, the lifting screw pass through the coupling joint in elevator motor.

So set up, the installing frame plays the installation effect, has guaranteed joint strength through the welding.

Preferably: the lifting screw is connected with the fixing lug through threads, and the fixing lug is connected with the supporting slide rod and the supporting plate through welding.

So set up, the lifting screw plays the linkage effect, through threaded connection lift stability.

Preferably: the controller is connected with the lifting motor, the electric sliding block, the material lifting motor, the telescopic cylinder and the weighing sensor through leads.

So set up, the controller plays control and processing effect, has guaranteed information processing's ageing through the wire connection.

The invention also provides a use method of the trawl or purse seiner fish cargo dumping and sorting equipment, which is applied to the trawl or purse seiner fish cargo dumping and sorting equipment, and the specific use method is as follows:

a. when the fishing net needs to be dumped, four corners of the fishing net are respectively mounted on the four mounting rods, the controller controls the electric slide block to move, and the mounting rods on the electric slide block drive the fishing net to move backwards, so that the fishing net is propped open;

b. the lifting motor drives the lifting screw to rotate, the lifting screw is matched with the fixing lug, so that the supporting plate and the supporting slide rod are taken away from the water surface, and meanwhile, the weighing sensor starts weighing and feeds back the weight to the controller;

c. after the supporting slide bar and the supporting plate are lifted to the position of the mounting frame, the controller controls the telescopic cylinder, the telescopic cylinder supports the turnover plate, the turnover plate drives the supporting slide bar and the supporting plate to turn over, after the supporting slide bar is turned over to a proper angle, fish in the fishing net is poured out and slides down the supporting table, the lifting motor is controlled to start according to the situation that the fish is poured out, the lifting motor drives the fixing lugs, and the fixing lugs drive the supporting plate to ascend so as to completely pour the fishing net;

d. at the moment, the controller starts the motor to drive the driving chain wheel and the driven chain wheel, the driven chain wheel drives the central plate, and the central plate drives the first leaky roller, the second leaky roller and the third leaky roller to rotate;

e. because the sizes of the leaking holes in the first leaking roller, the second leaking roller and the third leaking roller are different, small fishes are filtered by the first leaking roller, fishes with larger body sizes are filtered by the second leaking roller, big fishes are filtered by the third leaking roller, and fishes fall into different collecting boxes from the cavities at the bottoms of the first leaking roller, the second leaking roller and the third leaking roller for classified collection.

Compared with the prior art, the invention has the following beneficial effects:

1. the structure is reasonable, and the device adopts a rolling type sorting mode, so that the working efficiency is improved;

2. the operation is simple, the weighing, dumping and sorting can be automatically carried out, and the working intensity is reduced;

3. use the layer board and rise the material motor and can empty fast, improve and empty efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a fishing dumping and sorting device for a trawl or seine boat according to the present invention;

FIG. 2 is a schematic structural view of a turnover plate of the fishing goods dumping and sorting equipment of the trawl or purse seiner of the invention;

FIG. 3 is a schematic structural view of a telescopic cylinder of the fishing goods dumping and sorting equipment of the trawl or purse seiner of the invention;

FIG. 4 is a schematic diagram of a structure of a supporting plate of the fishing goods dumping and sorting equipment of the trawl or purse seiner according to the invention;

FIG. 5 is a schematic structural view of a third roller of the fishing dumping and sorting equipment of the trawl or purse seiner according to the invention;

FIG. 6 is a schematic view of the internal structure of a chain case of the fishing dumping and sorting equipment for a trawl or seine fishing boat according to the present invention;

fig. 7 is a block diagram of a circuit structure flow of the fishing goods dumping and sorting equipment of the trawl or purse seiner.

The reference numerals are explained below:

1. a support plate; 2. supporting the sliding rod; 3. a support plate; 4. a turnover plate; 5. a mounting frame; 6. a lifting motor; 7. a support table; 8. a fence; 9. a chain case; 10. an electric motor; 11. a first leakage roller; 12. a second leakage roller; 13. a third leakage roller; 14. a collection box; 15. a hanging rod; 16. an electric slider; 17. a material lifting motor; 18. fixing the ear; 19. a lifting screw; 20. turning over the connecting plate; 21. a controller; 22. a support pillar; 23. a telescopic cylinder; 24. a baffle plate; 25. a chute; 26. a limiting block; 27. a drive sprocket; 28. a driven sprocket; 29. a chain; 30. a leak hole; 31. a connecting rod; 32. a center plate; 33. a weighing sensor; 34. a material pushing screw rod.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be further described with reference to the accompanying drawings in which:

examples

As shown in figures 1-7, a fishing goods dumping and sorting device for a trawl or purse seiner comprises a supporting plate 1, a supporting plate 3, a turning plate 4 and a supporting table 7, wherein two supporting slide bars 2 are arranged on the upper side of the supporting plate 1, the supporting plate 1 plays a role of bearing, the supporting slide bars 2 play a role of supporting, a weighing sensor 33 is arranged on the supporting plate 1, the weighing sensor 33 plays a role of weighing, fixing lugs 18 are arranged on two sides of the supporting plate 1 and two sides of the supporting slide bars 2, the fixing lugs 18 play a role of fixing, a lifting motor 17 is arranged at the upper ends of the fixing lugs 18 on the supporting slide bars 2, a material pushing screw 34 is arranged on the lifting motor 17, the material pushing screw 34 plays a role of linkage, an electric slider 16 is arranged at the upper ends of the supporting slide bars 2, hanging rods 15 are arranged on the electric slider 16 and the supporting slide bars 2, a baffle 24 is arranged at the rear end of the supporting slide bars 2, a limiting block 26 is arranged between the supporting plate 1 and the baffle 24, a sliding groove 25 is arranged between the limiting block 26 and the baffle 24;

the rear end of the baffle plate 24 is provided with a support plate 3, the upper end of the support plate 3 is provided with a turnover plate 4, the turnover plate 4 plays a role in connection, two sides of the turnover plate 4 are provided with mounting frames 5, the mounting frames 5 play a role in installation, a lifting motor 6 is arranged on the mounting frames 5, the lower end of the lifting motor 6 is provided with a lifting screw 19, the lifting screw 19 plays a role in linkage, the rear side of the turnover plate 4 is provided with a support table 7, the support table 7 plays a role in support, a turnover connecting plate 20 is arranged between the turnover plate 4 and the support table 7, the inner side of the support table 7 is provided with a telescopic cylinder 23, one side of the support table 7 is provided with a controller 21, and the lower end of the support table 7 is provided with two support columns 22;

the fence 8 is arranged at the rear end of the support table 7, a first leakage roller 11 is arranged between the two fences 8, a second leakage roller 12 is arranged on the rear side of the first leakage roller 11, a third leakage roller 13 is arranged on the rear side of the second leakage roller 12, two first leakage rollers 11, two second leakage rollers 12 and two third leakage rollers 13 are arranged, a chain box 9 is arranged on one side of the fence 8, a motor 10 is arranged on the chain box 9, a driving chain wheel 27 is arranged in the chain box 9, six driven chain wheels 28 are arranged at the rear end of the driving chain wheel 27, a chain 29 is arranged between the driving chain wheel 27 and the driven chain wheels 28, and collecting boxes 14 are arranged on the lower sides of the first leakage roller 11, the second leakage rollers 12 and the third leakage rollers 13;

the first leaking roller 11, the second leaking roller 12 and the third leaking roller 13 are all provided with leaking holes 30, the inner side of the third leaking roller 13 is provided with a central plate 32, and a connecting rod 31 is arranged between the central plate 32 and the third leaking roller 13.

The connecting rod 31 is welded on the central plate 32 and the third leaky roller 13, the connecting rod 31 is made of 45-grade steel, the central plate 32 is connected with the driven chain wheel 28 in a key mode, the connecting rod 31 plays a supporting role, and the connecting strength is guaranteed through welding; the leakage holes 30 are integrally formed in the first leakage roller 11, the second leakage roller 12 and the third leakage roller 13, the diameters of the leakage holes 30 in the first leakage roller 11, the second leakage roller 12 and the third leakage roller 13 are gradually increased, the leakage holes 30 play a role in filtering, and the integrally formed stability is good; the driven chain wheel 28 is rotationally connected with the chain box 9, the driving chain wheel 27 is connected with the motor 10 in a key mode, the driven chain wheel 28 is connected through a chain 29, the driven chain wheel 28 and the driving chain wheel 27 play a transmission role, and the rotational connection work is smooth; the support table 7 is welded on the fence 8 and the support column 22, the controller 21 is connected to the support table 7 through screws, the support table 7 plays a supporting role, the fence 8 plays a shielding role, and the connection strength is guaranteed through welding; the overturning connecting plate 20 is rotatably connected to the supporting platform 7, the telescopic cylinder 23 is in pin connection with the supporting platform 7, the overturning connecting plate 20 plays a connecting role, and the rotary connection ensures the working stability; the mounting frame 5 is connected with the turnover plate 4 through welding, the lifting motor 6 is connected to the mounting frame 5 through bolts, the lifting screw 19 is connected to the lifting motor 6 through a coupler, the mounting frame 5 plays a mounting role, and the connection strength is guaranteed through welding; the lifting screw rod 19 is connected to the fixing lug 18 through threads, the fixing lug 18 is connected with the support slide rod 2 and the supporting plate 1 through welding, and the lifting screw rod 19 plays a linkage role and is connected with lifting stability through threads; the controller 21 is connected with the lifting motor 6, the motor 10, the electric sliding block 16, the material lifting motor 17, the telescopic cylinder 23 and the weighing sensor 33 through leads, the controller 21 plays a role in control and processing, and the timeliness of information processing is guaranteed through lead connection.

a. when the fishing net needs to be dumped, four corners of the fishing net are respectively mounted on the four mounting rods 15, the controller 21 controls the electric slide block 16 to move, and the mounting rods 15 on the electric slide block 16 drive the fishing net to move backwards, so that the fishing net is propped open;

b. the lifting motor 6 drives the lifting screw rod 19 to rotate, the lifting screw rod 19 is matched with the fixing lug 18, so that the supporting plate 1 and the supporting slide rod 2 are taken away from the water surface, and meanwhile, the weighing sensor 33 starts weighing and feeds back the weight to the controller 21;

c. after the support slide bar 2 and the supporting plate 1 rise to the position of the mounting frame 5, the controller 21 controls the telescopic cylinder 23, the telescopic cylinder 23 supports the turnover plate 4, the turnover plate 4 drives the support slide bar 2 and the supporting plate 1 to turn over, after the support slide bar 2 turns over to a proper angle, fish in the fishing net is poured out and slides down along the supporting table 7, according to the situation that the fish is poured, the lifting motor 17 is controlled to start, the lifting motor 17 drives the fixing lug 18, the fixing lug 18 drives the supporting plate 1 to rise, and the fishing net can be poured completely;

d. at the moment, the controller 21 starts the motor 10 to drive the driving sprocket 27 and the driven sprocket 28, the driven sprocket 28 drives the central plate 32, and the central plate 32 drives the first leaking roller 11, the second leaking roller 12 and the third leaking roller 13 to rotate;

e. because the first hourglass roller 11, the second leaks the leak 30 holes on roller 12, the third leaks the roller 13 and differs in size, the little fish is leaked the roller 11 by first hourglass, and the slightly big fish of size is leaked the roller 12 by the second and is filtered, and big fish is leaked the roller 13 by the third and is filtered, and the fish drops into inside the collecting box 14 of difference, carries out the categorised collection from first hourglass roller 11, the second leaks the roller 12, the third leaks the cavity of roller 13 bottom.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a trawl or purse seiner fishing goods are emptyd and letter sorting equipment which characterized in that: comprises a supporting plate (1), a supporting plate (3), a turnover plate (4) and a supporting table (7), wherein two supporting slide rods (2) are arranged on the upper side of the supporting plate (1), a weighing sensor (33) is arranged on the supporting plate (1), fixing lugs (18) are arranged on the two sides of the supporting slide rods (2), a material lifting motor (17) is arranged at the upper ends of the fixing lugs (18) on the supporting slide rods (2), a material pushing screw (34) is arranged on the material lifting motor (17), the material lifting motor (17) drives the fixing lugs (18), the fixing lugs (18) drive the supporting plate (1) to ascend, a fishing net can be poured completely, an electric sliding block (16) is arranged at the upper end of the supporting slide rod (2), a hanging and carrying rod (15) is arranged on the electric sliding block (16) and on the supporting slide rod (2), a baffle (24) is arranged at the rear end of the support sliding rod (2), a limiting block (26) is arranged between the supporting plate (1) and the baffle (24), and a sliding groove (25) is arranged between the limiting block (26) and the baffle (24);

the rear end of the baffle (24) is provided with the supporting plate (3), the upper end of the supporting plate (3) is provided with the turnover plate (4), mounting frames (5) are arranged on two sides of the turnover plate (4), a lifting motor (6) is arranged on the mounting frames (5), a lifting screw (19) is arranged at the lower end of the lifting motor (6), the lifting motor (6) drives the lifting screw (19) to rotate, the lifting screw (19) is matched with the fixing lugs (18), so that the supporting plate (1) and the supporting slide rod (2) are taken away from the water, the rear side of the turnover plate (4) is provided with the supporting table (7), a turnover connecting plate (20) is arranged between the turnover plate (4) and the supporting table (7), a telescopic cylinder (23) is arranged on the inner side of the supporting table (7), and a controller (21) is arranged on one side of the supporting table (7), two support columns (22) are arranged at the lower end of the support table (7);

the fences (8) are arranged at the rear end of the supporting platform (7), a first leakage roller (11) is arranged between the two fences (8), a second leaking roller (12) is arranged at the rear side of the first leaking roller (11), a third leaking roller (13) is arranged at the rear side of the second leaking roller (12), the first leakage roller (11), the second leakage roller (12) and the third leakage roller (13) are respectively provided with two leakage rollers, a chain box (9) is arranged on one side of the fence (8), a motor (10) is arranged on the chain box (9), a driving chain wheel (27) is arranged in the chain box (9), six driven chain wheels (28) are arranged at the rear end of the driving chain wheel (27), a chain (29) is arranged between the driving chain wheel (27) and the driven chain wheel (28), collecting boxes (14) are arranged on the lower sides of the first leaking roller (11), the second leaking roller (12) and the third leaking roller (13);

the first roller (11), the second roller (12) and the third roller (13) are provided with leakage holes (30), the inner side of the third roller (13) is provided with a central plate (32), and a connecting rod (31) is arranged between the central plate (32) and the third roller (13).

2. The fishing dumping and sorting equipment for trawl or seine fishing boats of claim 1, wherein: the connecting rod (31) weld in well core plate (32) with third hourglass roller (13), connecting rod (31) material is 45 # steel, well core plate (32) key-type connect in driven sprocket (28).

3. The fishing dumping and sorting equipment for trawl or seine fishing boats according to claim 2, wherein: the leak hole (30) integrated into one piece in first hourglass roller (11), second leak roller (12), third leak roller (13), first leak roller (11), second leak roller (12), on third leak roller (13) leak hole (30) diameter grow gradually.

4. The fishing dumping and sorting equipment for trawl or seine fishing boats according to claim 3, wherein: the driven chain wheel (28) is rotationally connected with the chain box (9), the driving chain wheel (27) is connected with the motor (10) in a key mode, and the driven chain wheel (28) is connected through the chain (29).

5. The fishing dumping and sorting equipment for trawl or seine fishing boats according to claim 4, wherein: the support table (7) is welded to the fence (8) and the support column (22), and the controller (21) is connected to the support table (7) through screws.

6. The fishing dumping and sorting equipment for trawl or seine fishing boats according to claim 5, wherein: the overturning connecting plate (20) is rotatably connected to the supporting platform (7), and the telescopic cylinder (23) is in pin connection with the supporting platform (7).

7. The fishing dumping and sorting equipment for trawl or seine fishing boats of claim 6, wherein: mounting bracket (5) through the welding with returning face plate (4) are connected, elevator motor (6) through bolted connection in mounting bracket (5), lifting screw (19) through the coupling joint in elevator motor (6).

8. The fishing dumping and sorting equipment for trawl or seine fishing boats of claim 7, wherein: the lifting screw (19) is connected with the fixing lug (18) through threads, and the fixing lug (18) is connected with the supporting slide rod (2) and the supporting plate (1) through welding.

9. The apparatus for dumping and sorting the fishing goods of trawl or seine fishing boat according to claim 8, wherein: the controller (21) is connected with the lifting motor (6), the motor (10), the electric slider (16), the material lifting motor (17), the telescopic cylinder (23) and the weighing sensor (33) through leads.

10. The method of using the apparatus for dumping and sorting the fishing goods of trawl or seine fishing boat according to claim 9, wherein: the method comprises the following steps:

a. when the fishing net needs to be dumped, four corners of the fishing net are respectively mounted on the four mounting rods (15), the controller (21) controls the electric slide block (16) to move, and the mounting rods (15) on the electric slide block (16) drive the fishing net to move backwards, so that the fishing net is propped open;

b. the lifting motor (6) drives the lifting screw rod (19) to rotate, the lifting screw rod (19) is matched with the fixing lug (18), so that the supporting plate (1) and the supporting slide rod (2) are taken away from the water surface, meanwhile, the weighing sensor (33) starts weighing, and the weight is fed back to the controller (21);

c. after the supporting slide bar (2) and the supporting plate (1) rise to the position of the mounting frame (5), the controller (21) controls the telescopic cylinder (23), the telescopic cylinder (23) supports the turnover plate (4), the turnover plate (4) drives the supporting slide bar (2) and the supporting plate (1) to turn over, after the supporting slide bar (2) turns over to a proper angle, fish in the fishing net is poured out and slides down along the supporting table (7), the lifting motor (17) is controlled to be started according to the situation that the fish is poured out, the lifting motor (17) drives the fixing lugs (18), the fixing lugs (18) drive the supporting plate (1) to rise, and the fishing net can be poured out completely;

d. at the moment, the controller (21) starts the motor (10) to drive the driving chain wheel (27) and the driven chain wheel (28), the driven chain wheel (28) drives the central plate (32), and the central plate (32) drives the first leaking roller (11), the second leaking roller (12) and the third leaking roller (13) to rotate;

e. because the leakage holes (30) on the first leakage roller (11), the second leakage roller (12) and the third leakage roller (13) are different in size, small fishes are filtered by the first leakage roller (11), fishes with larger sizes are filtered by the second leakage roller (12), big fishes are filtered by the third leakage roller (13), and the fishes fall into different collecting boxes (14) from the cavities at the bottoms of the first leakage roller (11), the second leakage roller (12) and the third leakage roller (13) for classified collection.