CN112005972A - Tortoise removing trawl net structure with camera device - Google Patents
Tortoise removing trawl net structure with camera device Download PDFInfo
- Publication number
- CN112005972A CN112005972A CN202010832571.7A CN202010832571A CN112005972A CN 112005972 A CN112005972 A CN 112005972A CN 202010832571 A CN202010832571 A CN 202010832571A CN 112005972 A CN112005972 A CN 112005972A
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- net
- turtle
- net bag
- camera device
- trawl
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- 241000270708 Testudinidae Species 0.000 title description 16
- 241000270666 Testudines Species 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 28
- 230000009194 climbing Effects 0.000 claims description 16
- 241000270617 Cheloniidae Species 0.000 claims description 9
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 210000003194 forelimb Anatomy 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 241001233242 Lontra Species 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 210000001364 upper extremity Anatomy 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 240000007643 Phytolacca americana Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
The invention discloses a turtle removal trawl structure with a camera device, and aims to provide a turtle removal trawl structure which can enable turtles captured by a trawl to escape under the condition that normal fishing of the trawl is not influenced so as to protect the turtles. The turtle escape system comprises a net body, a net bag, a turtle escape device and a camera device, wherein the camera device is arranged at a connecting part between the net bag and the net body, and the camera device shoots in the direction of the turtle escape device; the turtle escaping device comprises a separation grid plate fixed in a net bag and a poking-type escaping structure arranged on the net bag, wherein the separation grid plate separates an inner cavity of the net bag into a net bag front cavity and a net bag rear cavity, and the poking-type escaping structure comprises an escaping opening arranged on the side wall of the net bag, a supporting frame arranged in the escaping opening, a guide rod fixed on the supporting frame, a limiting block arranged in the middle of the guide rod and two sliding net plates sliding along the guide rod.
Description
Technical Field
The invention relates to a trawl, in particular to a turtle removal trawl structure with a camera device.
Background
At present, all turtles are determined as endangered species by the international alliance for natural and natural resource conservation and the international trade convention for endangered animal and plant species, and the international trade is strictly forbidden and protected. China also classified the sea turtles as national protection animals in the last 70 th century. At present, the main 5 factors threatening the survival of the turtles are fishery side-harvest, direct predation, coastal beach development, environmental pollution and diseases, and global warming, wherein the trawl fishing is caught together with the turtles, which are the organisms of lung respiration, and when the turtles are caught in the trawl, they are finally drowned because they cannot return to the sea surface for respiration.
Disclosure of Invention
The invention aims to provide a turtle removal trawl structure with a camera device, which can enable turtles captured by a trawl to escape without influencing the normal fishing of the trawl.
The technical scheme of the invention is as follows:
a trawl structure with a camera device for removing sea turtles comprises a net body, a net bag, a sea turtle escaping device and a camera device, wherein the camera device is arranged at the connecting part between the net bag and the net body, and the camera device shoots in the direction of the sea turtle escaping device; the turtle escaping device comprises a separation grid plate fixed in the net bag and a poking-type escaping structure arranged on the net bag, the separation grid plate separates the inner cavity of the net bag into a net bag front cavity and a net bag rear cavity, the poking-type escape structure is positioned in the net bag front cavity, and the poking-open type escaping structure is close to the separation grid plate, the poking-open type escaping structure comprises an escaping opening arranged on the side wall of the net bag, a supporting frame arranged in the escaping opening, a guide rod fixed on the supporting frame, a limiting block arranged in the middle of the guide rod and two sliding net plates sliding along the guide rod, the two sliding net plates are positioned at two opposite sides of the limiting block, the sliding net plate is connected with the supporting frame through an elastic piece, the elastic piece is used for providing elastic force, so that the sliding screen plates slide along the guide rod and are abutted against the limiting block, and after the two sliding screen plates are abutted against the limiting block, the two sliding screen plates cover the escape opening.
In the trawl fishing process, fish can enter the rear cavity of the net sac through the separation grid plate, and the turtles are blocked by the separation grid plate after entering the trawl; the turtles blocked by the separation grid plates are positioned in the front cavities of the net sacs close to the separation grid plates. The poking-open type escape structure utilizes the characteristic that forelimbs can be continuously stirred outwards in the climbing process of the chelonian, and the poking-open type escape structure is arranged in the front cavity of the net bag close to the separation grid plate, so that the chelonian blocked by the separation grid plate can hook the sliding net plate by utilizing the claws of the forelimbs to poke the sliding net plate when the chelonian is close to the poking-open type escape structure in the escape process of the chelonian, and the chelonian can escape through the escape opening; after the turtle passes through the poking-type escape structure, the sliding net plate resets under the action of the elastic piece to seal and cover the escape opening; therefore, the aim of enabling the turtles captured by the trawl to escape under the condition of not influencing the normal fishing of the trawl is fulfilled, and the turtles are protected.
On the other hand, can also shoot towards the sea turtle escape device direction through camera device, acquire the process that the sea turtle escaped from to improve the formula of dialling open and escape the structure in the later stage.
Preferably, the upper part of the separation grid plate is inclined towards the rear cavity of the mesh bag, and the escape opening is positioned at the upper part of the side wall of the mesh bag. So, can lead to the tortoise through separating the grid plate, make the tortoise that is blocked by the separation grid plate, move about to escape the mouth department along separating the grid plate backward direction slant, be favorable to the tortoise to escape through the structure of fleing from the formula.
Preferably, the inclination angle of the partition grids is 30 to 60 degrees.
Preferably, the support frame is further provided with an outer climbing net plate, and the outer climbing net plate is located on the outer side of the net bag. So, after the forelimb of the tortoise passed the escape opening, the in-process of stirring at the forelimb just catches on outer climbing otter board easily to through outer climbing otter board as the support that the forelimb of tortoise took place the strength, make the climbing that the tortoise can be smooth pull out formula escape structure, be favorable to the tortoise to flee from.
Preferably, the sliding net plate is provided with sliding sleeves which correspond to the guide rods one to one, and the sliding sleeves are sleeved on the corresponding guide rods and can slide along the guide rods.
Preferably, the elastic member is a rubber band or a string spring.
Preferably, the number of the guide rods is two, the two guide rods are parallel, one guide rod is close to one side of the supporting frame, and the other guide rod is close to the other opposite side of the supporting frame.
Preferably, the support frame is fixed on the side wall of the net bag through a connecting rope.
Preferably, the camera device comprises a plurality of underwater cameras.
The invention has the beneficial effects that: can enable the turtles captured by the trawl to escape without influencing the normal fishing of the trawl, so as to protect the turtles.
Drawings
Fig. 1 is a partial structure diagram of a turtle removal trawl structure with a camera device according to the present invention.
Fig. 2 is a partial structural view in the direction a of fig. 1.
Fig. 3 is a partial structural view in the direction B in fig. 2.
In the figure:
a net body 1;
a net sac 2, a net sac front cavity 2.1 and a net sac rear cavity 2.2;
an image pickup device 3;
a partition grid plate 4;
the pull-open type escape structure comprises a pull-open type escape structure 5, an escape opening 5.1, a support frame 5.2, a guide rod 5.3, a sliding screen plate 5.4, an elastic piece 5.5, a sliding sleeve 5.6, a limiting block 5.7 and an outer climbing screen plate 5.8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1, a turtle removal trawl structure with a camera device comprises a net body 1, a net bag 2, a turtle escape device and a camera device 3. The camera 3 is fixed at the connecting part between the net sac and the net body, and the camera shoots towards the direction of the turtle escaping device. In this embodiment, the image pickup apparatus is an underwater image pickup apparatus with a battery and a memory card.
As shown in fig. 1 and 2, the turtle escape device includes a separation grid plate 4 fixed in the net bag and a poking-type escape structure 5 disposed on the net bag. The inner cavity of the net bag is divided into a net bag front cavity 2.1 and a net bag rear cavity 2.2 by the separation grid plate. The poking-open type escape structure is positioned in the front cavity of the net bag and is close to the separation grid plate.
The poking-type escape structure 5 comprises an escape opening 5.1 arranged on the side wall of the mesh bag, a support frame 5.2 arranged in the escape opening, a guide rod 5.3 fixed on the support frame, a limiting block 5.7 arranged in the middle of the guide rod and two sliding mesh plates 5.4 sliding along the guide rod. In this embodiment, the support frame is fixed on the lateral wall of the net bag through the connecting rope. The two sliding net plates are positioned at two opposite sides of the limiting block. The sliding net plate is connected with the supporting frame through an elastic piece 5.5, one end of the elastic piece is connected with the corresponding sliding net plate, and the other end of the elastic piece is connected with the supporting frame. In this embodiment, the elastic member is a rubber band or a pull-cord spring. The elastic piece is used for providing elastic force so that the sliding screen plate slides along the guide rod and abuts against the limiting block. After the two sliding screen plates abut against the limiting block, the two sliding screen plates seal and cover the escape opening.
In the trawl fishing process, fish can enter the rear cavity of the net sac through the separation grid plate, and the turtles are blocked by the separation grid plate after entering the trawl; the turtles blocked by the separation grid plates are positioned in the front cavities of the net sacs close to the separation grid plates.
The poking-open type escape structure of the embodiment utilizes the characteristic that forelimbs can be continuously stirred outwards in the climbing process of the chelonian, and the poking-open type escape structure is arranged in the front cavity of the net bag close to the separation grid plate, so that the chelonian blocked by the separation grid plate can hook the sliding net plate by utilizing the claws of the forelimbs to poke the sliding net plate to enable the chelonian to escape through the escape opening in the escape process of the chelonian; after the turtle passes through the poking-type escape structure, the sliding net plate resets under the action of the elastic piece to seal and cover the escape opening; therefore, the aim of enabling the turtles captured by the trawl to escape under the condition of not influencing the normal fishing of the trawl is fulfilled, and the turtles are protected.
On the other hand, can also shoot towards the sea turtle escape device direction through camera device, acquire the process that the sea turtle escaped from to improve the formula of dialling open and escape the structure in the later stage.
Further, as shown in fig. 1, the upper part of the partition grid plate 4 is inclined towards the rear cavity of the mesh bag, and the escape opening is positioned at the upper part of the side wall of the mesh bag. So, can lead to the tortoise through separating the grid plate, make the tortoise that is blocked by the separation grid plate, move about to escape the mouth department along separating the grid plate backward direction slant, be favorable to the tortoise to escape through the structure of fleing from the formula.
The inclination angle of the partition grids is 30-60 degrees, and in the embodiment, the inclination angle of the partition grids is 40 degrees.
Further, as shown in fig. 3, an outer climbing net plate 5.8 is further arranged on the supporting frame, and the outer climbing net plate is located on the outer side of the net bag. So, after the forelimb of the tortoise passed the escape opening, the in-process of stirring at the forelimb just catches on outer climbing otter board easily to through outer climbing otter board as the support that the forelimb of tortoise took place the strength, make the climbing that the tortoise can be smooth pull out formula escape structure, be favorable to the tortoise to flee from. In this embodiment, the opposite sides of the supporting frame are provided with an outer climbing net plate.
Further, as shown in fig. 2 and 3, sliding sleeves 5.6 corresponding to the guide rods one to one are arranged on the sliding net plate, and the sliding sleeves are sleeved on the corresponding guide rods and can slide along the guide rods, so that the sliding net plate can slide along the guide rods.
The two guide rods are parallel, one guide rod is close to one side of the supporting frame, and the other guide rod is close to the other opposite side of the supporting frame.
Furthermore, the camera device comprises a plurality of underwater cameras. In this embodiment, the underwater camera is an underwater camera with a battery and a memory card.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. A trawl structure with a camera device for turtle removal comprises a net body and a net bag, and is characterized by also comprising a turtle escape device and a camera device,
the camera device is arranged at the connecting part between the net bag and the net body, and shoots towards the direction of the sea turtle escaping device;
the turtle escaping device comprises a separation grid plate fixed in the net bag and a poking-type escaping structure arranged on the net bag, the separation grid plate separates the inner cavity of the net bag into a net bag front cavity and a net bag rear cavity, the poking-type escape structure is positioned in the net bag front cavity, and the poking-open type escaping structure is close to the separation grid plate, the poking-open type escaping structure comprises an escaping opening arranged on the side wall of the net bag, a supporting frame arranged in the escaping opening, a guide rod fixed on the supporting frame, a limiting block arranged in the middle of the guide rod and two sliding net plates sliding along the guide rod, the two sliding net plates are positioned at two opposite sides of the limiting block, the sliding net plate is connected with the supporting frame through an elastic piece, the elastic piece is used for providing elastic force, so that the sliding screen plates slide along the guide rod and are abutted against the limiting block, and after the two sliding screen plates are abutted against the limiting block, the two sliding screen plates cover the escape opening.
2. The turtle removal trawl structure with a camera device according to claim 1, wherein the upper portion of the separation grid plate is inclined toward the rear cavity of the sac, and the escape opening is located at the upper portion of the side wall of the sac.
3. The turtle removal trawl structure with camera device according to claim 1, wherein the inclination angle of said separation grid is 30-60 degrees.
4. The turtle removal trawl structure with the camera device according to claim 1, 2 or 3, wherein the supporting frame is further provided with an outer climbing net plate, and the outer climbing net plate is located outside the net bag.
5. The turtle removal trawl structure with a camera device according to claim 1, 2 or 3, wherein the sliding net plate is provided with sliding sleeves corresponding to the guide rods one by one, and the sliding sleeves are sleeved on the corresponding guide rods and can slide along the guide rods.
6. The turtle removal trawl structure with camera according to claim 1, 2 or 3, wherein said elastic member is a rubber band or a string spring.
7. The turtle removal trawl structure with the camera device according to claim 1, 2 or 3, wherein the number of the guide rods is two, the two guide rods are parallel, one guide rod is close to one side of the supporting frame, and the other guide rod is close to the other opposite side of the supporting frame.
8. The turtle removal trawl structure with a camera device according to claim 1, 2 or 3, wherein the supporting frame is fixed on the side wall of the net bag through a connecting rope.
9. The turtle removal trawl structure with a camera according to claim 1, 2 or 3, wherein the camera comprises a plurality of underwater cameras.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832571.7A CN112005972B (en) | 2020-08-18 | 2020-08-18 | Tortoise removing trawl net structure with camera device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832571.7A CN112005972B (en) | 2020-08-18 | 2020-08-18 | Tortoise removing trawl net structure with camera device |
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| Publication Number | Publication Date |
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| CN112005972A true CN112005972A (en) | 2020-12-01 |
| CN112005972B CN112005972B (en) | 2022-03-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113180016A (en) * | 2021-05-24 | 2021-07-30 | 浙江海洋大学 | Trawl fishing device and using method thereof |
| CN113180018A (en) * | 2021-05-24 | 2021-07-30 | 浙江海洋大学 | Auxiliary catching device for trawl and using method thereof |
| CN113261542A (en) * | 2021-05-17 | 2021-08-17 | 浙江省海洋水产研究所 | Self-adjusting marine animal selective fishing device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113261542A (en) * | 2021-05-17 | 2021-08-17 | 浙江省海洋水产研究所 | Self-adjusting marine animal selective fishing device |
| CN113261542B (en) * | 2021-05-17 | 2022-06-24 | 浙江省海洋水产研究所 | Self-adjusting marine animal selective fishing device |
| CN113180016A (en) * | 2021-05-24 | 2021-07-30 | 浙江海洋大学 | Trawl fishing device and using method thereof |
| CN113180018A (en) * | 2021-05-24 | 2021-07-30 | 浙江海洋大学 | Auxiliary catching device for trawl and using method thereof |
| CN113180016B (en) * | 2021-05-24 | 2022-06-28 | 浙江海洋大学 | Trawl fishing device and using method thereof |
| CN113180018B (en) * | 2021-05-24 | 2022-07-08 | 浙江海洋大学 | Auxiliary catching device for trawl and using method thereof |
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| CN112005972B (en) | 2022-03-29 |
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