CN110839600B - Trawl board with controllable net shape and using method - Google Patents
Trawl board with controllable net shape and using method Download PDFInfo
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- CN110839600B CN110839600B CN201911241914.6A CN201911241914A CN110839600B CN 110839600 B CN110839600 B CN 110839600B CN 201911241914 A CN201911241914 A CN 201911241914A CN 110839600 B CN110839600 B CN 110839600B
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- 230000009471 action Effects 0.000 claims description 19
- 239000010720 hydraulic oil Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 30
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- 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
- A01K73/04—Devices for spreading or positioning, e.g. control thereof
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Abstract
The invention provides a trawl door with a controllable net shape and a using method thereof, belonging to the technical field of trawl equipment. The screen comprises a first screen plate, a first driving mechanism, a second screen plate, a second driving mechanism and a rotating mechanism, wherein a first through hole is formed in the first screen plate, a plurality of first rotating shafts are rotatably arranged in the first through hole, a first rotating blade plate is fixedly arranged on the right side of the first rotating shaft, the first driving mechanism can drive the first rotating shafts in the first through hole to simultaneously and unidirectionally rotate, the second screen plate is hinged to the lower side edge of the first screen plate through first hinge shafts, a second through hole is formed in the second screen plate, a plurality of second rotating shafts are rotatably arranged in the second through hole, a second rotating blade plate is fixedly arranged on the right side of the second rotating shaft, the second driving mechanism can drive the second rotating shafts in the second through hole to simultaneously and unidirectionally rotate, and the rotating mechanism can adjust the angle between the first screen plate and the second screen plate. The invention can quickly adjust the net shape and the operation depth of the fishing net and improve the fishing efficiency.
Description
Technical Field
The invention belongs to the technical field of trawl equipment, and relates to a trawl door with controllable net shape and a using method thereof.
Background
Trawl fishing is a fishing operation mode which uses a fishing boat to drag a bag-shaped net to force a fishing object to enter the net, can actively and flexibly drag and catch fish schools, is mainly used in oceans and inland waters, and mainly comprises bottom layer and near-bottom layer fishes, shrimps and mollusks, such as cod, menhaden, hairtail, globefish, large yellow croaker, small yellow croaker, cuttlefish, flounder, shrimps, crabs in oceans, and naked carp in Qinghai lake, coilia ectenes, silverfish, white shrimps and the like.
Trawl fishing is one of the most important modern fishing modes, the opening size of a trawl needs to be adjusted in the trawl fishing process, the conventional method is to enable a trawl net plate to generate upwelling and turbulent flow according to the principle of wings so as to expand a net mouth, the adjustment efficiency of the net plate is not high, the opening size of the net mouth is not easy to control, in addition, the operation depth of the conventional net plate is relatively fixed, the real-time adjustment cannot be realized, and the fishing efficiency is relatively low.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a trawl door with a controllable net shape and a using method thereof, and can quickly adjust the net shape and the operation depth of a fishing net and improve the fishing efficiency.
The purpose of the invention can be realized by the following technical scheme:
a trawl door with a controllable net shape comprises a first door, wherein the first door is rectangular, a first through hole is formed in the first door, a plurality of first rotating shafts are rotatably arranged in the first through hole, the axes of the first rotating shafts are vertical to the upper side edge of the first door, and first rotating blade plates are fixedly arranged on the right sides of the first rotating shafts;
the first driving mechanism is arranged in the first screen plate and can drive a plurality of first rotating shafts in the first through holes to rotate simultaneously and in the same direction;
the second screen plate is rectangular and is hinged to the lower side edge of the first screen plate through a first hinge shaft, a second through hole is formed in the second screen plate, a plurality of second rotating shafts are rotatably arranged in the second through hole, the axes of the plurality of second rotating shafts are perpendicular to the first hinge shaft, and second rotating vane plates are fixedly arranged on the right sides of the plurality of second rotating shafts;
the second driving mechanism is arranged in the second screen plate and can drive a plurality of second rotating shafts in the second through holes to simultaneously and simultaneously rotate in the same direction;
the rotating mechanism is arranged between the first screen plate and the second screen plate and can adjust the angle between the first screen plate and the second screen plate.
In the trawl door with controllable net shape, the first door is provided with a first cavity, the first driving mechanism comprises:
the two first through holes are respectively formed in the left side and the right side of the first screen plate and communicated with the first cavity, first slide rods are arranged in the two first through holes in a sliding mode, one end of each first slide rod extends into the first cavity, a first connecting plate is fixedly arranged at the end part of each first slide rod, the other end of each first slide rod extends out of the first screen plate, and a first sealing plate is fixedly arranged at the end part of each first slide rod;
the first gear racks are horizontally arranged in the first cavities, the length directions of the first gear racks are parallel to the axial direction of the first hinge shafts, two ends of each first gear rack correspond to the two first connecting plates one by one, one ends of the first gear racks are fixedly connected with the corresponding first connecting plates, the upper ends of the first rotating shafts extend into the first cavities, first gears are fixedly arranged at the end parts of the first rotating shafts, and the first gears are meshed and connected with the first gear racks;
the first driving unit is arranged in a first cavity, and the first cavity can drive the first rack to move left and right.
In the trawl door of the controllable net shape described above, the first driving unit includes:
the first installation cavity is arranged in the first screen plate;
the first driving shaft is vertically and rotatably arranged in the first cavity, a second gear is fixedly arranged on the first driving shaft, and the second gear is meshed with the first rack;
the first motor is fixedly arranged in the first mounting cavity, the lower end of the first driving shaft extends into the first mounting cavity, and the end part of the first driving shaft is in transmission connection with an output shaft of the first motor.
In the trawl door with controllable net shape, the second door is provided with a second cavity, the second driving mechanism comprises:
the two second through holes are respectively formed in the left side and the right side of the second screen plate and communicated with the second cavity, second slide rods are arranged in the two second through holes in a sliding mode, one end of each second slide rod extends into the second cavity, a second connecting plate is fixedly arranged at the end part of each second slide rod, the other end of each second slide rod extends out of the second screen plate, and a second sealing plate is fixedly arranged at the end part of each second slide rod;
the second rack is horizontally arranged in the second cavity, the length direction of the second rack is parallel to the axial direction of the first hinge shaft, two ends of the second rack correspond to the two second connecting plates one by one, one end of the second rack is fixedly connected with the corresponding second connecting plates, the upper ends of the second rotating shafts extend into the second cavity, the end parts of the second rotating shafts are fixedly provided with third gears, and the third gears are meshed and connected with the second racks;
and the second driving unit is arranged in a second cavity, and the second cavity can drive the second rack to move left and right.
In the trawl door of the controllable net shape described above, the second driving unit includes:
the second mounting cavity is arranged in the second screen plate;
the second driving shaft is vertically and rotatably arranged in the second cavity, a fourth gear is fixedly arranged on the second driving shaft, and the fourth gear is meshed with the second rack;
the second motor is fixedly arranged in the second mounting cavity, the lower end of the second driving shaft extends into the second mounting cavity, and the end part of the second driving shaft is in transmission connection with an output shaft of the second motor.
In the trawl door of the controllable net shape described above, the rotating mechanism includes:
one end of the first annular plate is hinged to the left side edge of the first screen plate through a second hinge shaft, one end of the second annular plate is hinged to the left side edge of the second screen plate through a third hinge shaft, and the other end of the first annular plate is hinged to the other end of the second annular plate through a fourth hinge shaft;
the hydraulic oil cylinder is an electro-hydraulic type hydraulic oil cylinder, a piston cylinder of the hydraulic oil cylinder is hinged to the end portion of the first hinge shaft through a fixing plate, and a piston rod of the hydraulic oil cylinder is hinged to the fourth hinge shaft.
In the trawl door with the controllable net shape, two first limiting rods are vertically arranged on the lower side wall of the first through hole, the two first limiting rods are respectively positioned on the front side and the rear side of one first rotating shaft, when the first rotating blade rotates anticlockwise around the first rotating shaft, at least one position is arranged, the first rotating blade is in contact with the first limiting rod positioned on the rear side of the first rotating shaft, and when the first rotating blade rotates clockwise around the first rotating shaft, at least one position is arranged, the first rotating blade is in contact with the first limiting rod positioned on the front side of the first rotating shaft.
In the trawl door with the controllable net shape, two second limiting rods are vertically arranged on the lower side wall of the second through hole, the two second limiting rods are respectively positioned on the front side and the rear side of one of the second rotating shafts, when the second rotating blade plate rotates anticlockwise around the second rotating shaft, at least one position is arranged, the second rotating blade plate is in contact with the second limiting rod positioned on the rear side of the second rotating shaft, when the second rotating blade plate rotates clockwise around the second rotating shaft, at least one position is arranged, and the second rotating blade plate is in contact with the second limiting rod positioned on the front side of the second rotating shaft.
A method for using a trawl door with controllable net shape comprises the following steps:
1) one side of each trawl door is connected with a fishing boat through a steel cable, and the other side of each trawl door is connected with two sides of a fishing net port through the steel cable;
2) when the net mouth needs to be contracted, the first motor and the second motor on the two trawl doors are started simultaneously, so that the first rotating vane plate and the second rotating vane plate on the trawl door on the port side rotate anticlockwise, the first rotating vane plate and the second rotating vane plate on the trawl door on the starboard side rotate clockwise, the first rotating vane plate and the second rotating vane plate on the two trawl doors open towards the outer side of the fishing net, the two trawl doors approach each other under the action of water flow, and the net mouth of the fishing net is contracted through the steel cable;
3) when the net mouth needs to be expanded, the first motor and the second motor on the two trawl doors are started simultaneously, so that the first rotating vane plate and the second rotating vane plate on the trawl door on the port side rotate clockwise, the first rotating vane plate and the second rotating vane plate on the trawl door on the starboard side rotate anticlockwise, the first rotating vane plate and the second rotating vane plate on the two trawl doors open towards the inner side of the fishing net, the two trawl doors are far away from each other under the action of water flow, and the net mouth of the fishing net is expanded through the steel cable;
4) when the net mouth needs to move to the port, the first motor and the second motor on the two trawl doors are started simultaneously, so that the first rotating vane plate and the second rotating vane plate on the trawl door on the port rotate clockwise, the first rotating vane plate and the second rotating vane plate on the trawl door on the starboard rotate clockwise, the first rotating vane plate and the second rotating vane plate on the two trawl doors open towards the starboard simultaneously, the two trawl doors move to the left under the action of water flow, and the net mouth of the fishing net is pulled to move to the port through the steel cable;
5) when the net mouth needs to move to the starboard, the first motor and the second motor on the two trawl doors are started simultaneously, so that the first rotating vane plate and the second rotating vane plate on the trawl door on the port side rotate anticlockwise, the first rotating vane plate and the second rotating vane plate on the trawl door on the starboard side rotate anticlockwise, the first rotating vane plate and the second rotating vane plate on the two trawl doors open towards the port side simultaneously, the two trawl doors move rightwards under the action of water flow, and the net mouth of the fishing net is pulled by the steel cable to move to the starboard side;
6) when the net mouth needs to move downwards, the hydraulic oil cylinders on the two trawl net plates are started simultaneously to shorten the net mouth, the two first net plates rotate towards the inner side of the fishing net, the first motors on the two trawl net plates are started simultaneously, the first rotating vane on the trawl net plate on the port side rotates anticlockwise, the first rotating vane on the trawl net plate on the starboard side rotates clockwise, the two trawl net plates are driven to move downwards under the action of water flow, and the net mouth of the fishing net is pulled to move downwards through the steel cable;
7) when the net gape needs rebound, start the hydraulic cylinder on two trawl doors simultaneously and make it shorten, make two second otter boards rotate to the inboard of fishing net, start the second motor on two trawl doors simultaneously, make the second that is located on the trawl door of port rotate the leaf board anticlockwise, make the second that is located on the trawl door of starboard rotate the leaf board clockwise, under the effect of rivers, drive two trawl doors rebound, the net gape rebound through cable wire pulling fishing net.
Compared with the prior art, the invention has the following advantages:
1. the first rotating vane plate is parallel to the first screen plate, the second rotating vane plate is parallel to the second screen plate, when the first rotating vane plate needs to be rotated, the first driving mechanism is started to drive the first rotating shafts in the first through holes to rotate, so that the first rotating vane plate rotates along with the first rotating vane plate, when the second rotating vane plate needs to be rotated, the second driving mechanism is started to drive the second rotating shafts in the second through holes to rotate, so that the second rotating vane plate rotates along with the second rotating vane plate, the acting force of water flow on the trawl screen plates is changed through the rotating directions of the first rotating vane plate and the second rotating vane plate, so that the two trawl screen plates are close to or far away from each other, the opening size of a fishing net is changed, and the adjusting efficiency is high; in addition, the angle between the first screen plate and the second screen plate can be adjusted through the rotating mechanism, when the first screen plate of the two trawl screen plates approaches to the inner side of the fishing net, the two trawl screen plates move downwards to reduce the operation depth, and when the second screen plate of the two trawl screen plates approaches to the inner side of the fishing net, the two trawl screen plates move upwards to raise the operation depth and improve the fishing efficiency;
2. when the first rotating blade plate needs to rotate towards the left side of the first screen plate, the first motor is started to drive the first driving shaft and the second gear to rotate anticlockwise and drive the first rack to move leftwards, so that the first gears rotate anticlockwise and drive the first rotating shaft and the first rotating blade to rotate anticlockwise to the left side of the first screen plate; in addition, the first rack drives the two first sliding rods to slide left and right along the two first through holes, so that the moving stability of the first rack is improved;
3. when the second rotating blade plate needs to rotate towards the left side of the second screen plate, the second motor is started to drive the second driving shaft and the fourth gear to rotate anticlockwise and drive the second rack to move leftwards, so that the plurality of third gears rotate anticlockwise and drive the second rotating shaft and the second rotating blade plate to rotate anticlockwise to the left side of the second screen plate; in addition, the second rack drives the two second sliding rods to slide left and right along the two second through holes, so that the moving stability of the second rack is improved;
4. the first net plate and the second net plate are in the same vertical plane in an initial state, when the angle between the first net plate and the second net plate needs to be adjusted, the hydraulic oil cylinder is started to extend, the first net plate and the second net plate rotate around the first hinged shaft in opposite directions, the second net plate of the two trawl net plates is in a vertical state by adjusting the length of the steel cable, the two first net plates turn to the inner side of the fishing net, the first rotating vane plate rotates reversely, the two trawl net plates move downwards under the action of water flow, the operation depth of the fishing net is reduced, the first net plates of the two trawl net plates are in a vertical state by adjusting the length of the steel cable, the two second net plates turn to the inner side of the fishing net, the second rotating vane plate rotates reversely, the two trawl net plates move upwards under the action of the water flow, the operation depth of the fishing net is increased, the operation is simple, and the response speed is.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;
FIG. 5 is an enlarged view of a portion of FIG. 1 at D;
FIG. 6 is an enlarged view of a portion of FIG. 1 at E;
FIG. 7 is a schematic structural diagram of a first net plate and a second net plate when a hydraulic oil cylinder is stretched;
FIG. 8 is a schematic view of the structure of a trawl door retracting a net mouth;
FIG. 9 is a schematic view of the structure of a trawl door expanding the mouth of a fishing net;
FIG. 10 is a schematic view of the trawl door moving the net port;
FIG. 11 is a schematic view showing a structure in which a trawl door moves a fishing net to a starboard.
In the figure, 1, a first net plate; 11. a first through hole; 12. a first rotating shaft; 121. a first vane plate; 122. a first gear; 123. a first limit rod; 13. a first cavity; 131. a first perforation; 14. a first rack; 141. a first connecting plate; 142. a first slide bar; 143. a first seal plate; 15. a first mounting cavity; 151. a first motor; 152. a first drive shaft; 153. a second gear; 154. a first controller; 16. a first lifting lug; 2. a second screen plate; 21. a second through hole; 22. a second rotating shaft; 221. a second rotating vane plate; 222. a third gear; 223. a second limiting rod; 23. a second cavity; 231. a second perforation; 24. a second rack; 241. a second connecting plate; 242. a second slide bar; 243. a second seal plate; 25. a second mounting cavity; 251. a second motor; 252. a second drive shaft; 253. a fourth gear; 254. a second controller; 26. a second lifting lug; 3. a first hinge shaft; 4. a first annular plate; 41. a second hinge shaft; 5. a second annular plate; 51. a third hinge shaft; 6. a fourth hinge shaft; 7. a hydraulic cylinder; 71. a fixing plate; 8. a fishing net; 9. a fishing boat.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 11, a trawl door with controllable net shape, a first door 1, a first driving mechanism, a second door 2, a second driving mechanism and a rotating mechanism.
The first driving mechanism is arranged in the first screen plate 1, and the first driving mechanism can drive the first rotating shafts 12 in the first through holes 11 to rotate simultaneously and in the same direction.
The second driving mechanism is arranged in the second screen plate 2, and the second driving mechanism can drive the plurality of second rotating shafts 22 in the second through holes 21 to rotate simultaneously and in the same direction.
The rotating mechanism is arranged between the first screen plate 1 and the second screen plate 2, and the rotating mechanism can adjust the angle between the first screen plate 1 and the second screen plate 2.
The right sides of the two trawl net plates are connected with a fishing boat 9 through a steel cable, the left sides of the two trawl net plates are connected with the two sides of a net mouth of a fishing net 8 through the steel cable, the two trawl net plates are arranged in bilateral symmetry, in an initial state, a first rotating vane plate 121 is parallel to a first net plate 1, a second rotating vane plate 221 is parallel to a second net plate 2, when the first rotating vane plate 121 needs to be rotated, a first driving mechanism is started to drive a plurality of first rotating shafts 12 in a first through hole 11 to rotate, so that the first rotating vane plate 121 rotates along with the first rotating vane plate, when the second rotating vane plate 221 needs to be rotated, a second driving mechanism is started to drive a plurality of second rotating shafts 22 in a second through hole 21 to rotate, so that the second rotating vane plate 221 rotates along with the first rotating vane plate 121 and the second rotating vane plate 221, the acting force of water flow on the trawl net plates is changed through the rotating directions of the first rotating vane plate 121 and the second rotating vane plate, the adjusting efficiency is high; in addition, can adjust the angle between first otter board 1 and the second otter board 2 through slewing mechanism, when the first otter board 1 of two trawl otter boards was close to 8 inboards of fishing net, make two trawl otter boards remove downwards, reduce the operation degree of depth, when the second otter board 2 of two trawl otter boards was close to 8 inboards of fishing net, made two trawl otter boards rebound, raised the operation degree of depth, improved fishing efficiency.
Specifically, a first cavity 13 is arranged in the first net plate 1, the first cavity 13 is rectangular, and the first driving mechanism includes two first through holes 131, a first rack 14, and a first driving unit.
Two first perforation 131 sets up respectively in the left and right sides of first otter board 1, two first perforation 131 all is linked together with first cavity 13, two all slide in the first perforation 131 and be provided with first slide bar 142, first slide bar 142's one end is stretched into in first cavity 13 and the tip has set firmly first connecting plate 141, and the other end extends to outside the first otter board 1 and the tip has set firmly first shrouding 143, the size of first shrouding 143 is greater than the size of first slide bar 142 cross section.
The first driving unit is arranged in the first cavity 13, and the first cavity 13 can drive the first rack 14 to move left and right.
When the first rotating blade 121 needs to rotate to the left side of the first screen plate 1, the first driving unit is started to drive the first rack 14 to move leftward, so that the plurality of first gears 122 rotate counterclockwise, the first rotating shaft 12 and the first rotating blade 121 are driven to rotate counterclockwise to the left side of the first screen plate 1, and similarly, when the first rotating blade 121 needs to rotate to the right side of the first screen plate 1, the first driving unit is started to drive the first rack 14 to move rightward, so that the plurality of first gears 122 rotate clockwise, and the first rotating shaft 12 and the first rotating blade 121 are driven to rotate clockwise to the right side of the first screen plate 1; in addition, the first rack 14 drives the two first sliding bars 142 to slide left and right along the two first through holes 131, so as to improve the moving stability of the first rack 14.
Specifically, the first driving unit includes a first mounting chamber 15, a first driving shaft 152, and a first motor 151.
The first mounting cavity 15 is arranged in the first screen plate 1, and the first mounting cavity 15 is located between the first cavity 13 and the first through hole 11.
The first driving shaft 152 is vertically and rotatably disposed in the first cavity 13, a second gear 153 is fixedly disposed on the first driving shaft 152, and the second gear 153 is engaged with the first rack 14.
The first motor 151 is fixedly arranged in the first mounting cavity 15, the lower end of the first driving shaft 152 extends into the first mounting cavity 15, and the end part of the first driving shaft is fixedly connected with the output shaft of the first motor 151.
The first motor 151 is started to drive the first driving shaft 152 and the second gear 153 to rotate anticlockwise to drive the first rack 14 to move leftwards, the first gear 122 and the first rotating shaft 12 are driven to rotate anticlockwise, the first rotating vane plate 121 is made to rotate to the left side of the first net plate 1, the first motor 151 is started to drive the first driving shaft 152 and the second gear 153 to rotate clockwise, the first rack 14 is driven to move rightwards, the first gear 122 and the first rotating shaft 12 are driven to rotate clockwise, the first rotating vane plate 121 is made to rotate to the right side of the first net plate 1, and the rotating direction of the first rotating vane plate 121 is adjusted by controlling the rotating direction of the first motor 151.
Specifically, a second cavity 23 is formed in the second net plate 2, the second cavity 23 is rectangular, and the second driving mechanism includes two second through holes 231, a second rack 24, and a second driving unit.
Two the second perforation 231 sets up respectively in the left and right sides of second otter board 2, two the second perforation 231 all is linked together with second cavity 23, two all slide in the second perforation 231 and be provided with second slide bar 242, the one end of second slide bar 242 stretches into in the second cavity 23 and the tip has set firmly second connecting plate 241, and the other end extends to second otter board 2 outside and the tip has set firmly second shrouding 243, the size of second shrouding 243 is greater than the size of second slide bar 242 cross-section.
The second rack 24 is horizontally arranged in the second cavity 23, the length direction of the second rack 24 is parallel to the axial direction of the first hinge shaft 3, two ends of the second rack 24 correspond to the two second connecting plates 241 one by one, one end of the second rack 24 is fixedly connected with the corresponding second connecting plate 241, the upper ends of the second rotating shafts 22 extend into the second cavity 23, the end parts of the second rotating shafts are fixedly provided with third gears 222, and the third gears 222 are meshed with the second rack 24.
The second driving unit is arranged in the second cavity 23, and the second cavity 23 can drive the second rack 24 to move left and right.
When the second rotating blade plate 221 needs to rotate to the left side of the second screen plate 2, the second driving unit is started to drive the second rack 24 to move leftward, so that the plurality of third gears 222 rotate counterclockwise, and the second rotating shaft 22 and the second rotating blade plate 221 rotate counterclockwise to the left side of the second screen plate 2, similarly, when the second rotating blade plate 221 needs to rotate to the right side of the second screen plate 2, the second driving unit is started to drive the second rack 24 to move rightward, so that the plurality of third gears 222 rotate clockwise, and the second rotating shaft 22 and the second rotating blade plate 221 are driven to rotate clockwise to the right side of the second screen plate 2; in addition, the second rack 24 drives the two second sliding bars 242 to slide left and right along the two second through holes 231, so as to improve the moving stability of the second rack 24
Specifically, the second driving unit includes a second mounting chamber 25, a second driving shaft 252, and a second motor 251.
The second installation cavity 25 is arranged in the second net plate 2, and the second installation cavity 25 is located between the second cavity 23 and the second through hole 21.
The second driving shaft 252 is vertically and rotatably disposed in the second cavity 23, a fourth gear 253 is fixedly disposed on the second driving shaft 252, and the fourth gear 253 is in meshed connection with the second rack 24.
The second motor 251 is fixedly arranged in the second mounting cavity 25, and the lower end of the second driving shaft 252 extends into the second mounting cavity 25 and the end part is fixedly connected with the output shaft of the second motor 251.
The second motor 251 is started to drive the second driving shaft 252 and the fourth gear 253 to rotate anticlockwise to drive the second rack 24 to move leftward to drive the third gear 222 and the second rotating shaft 22 to rotate anticlockwise to enable the second rotating vane plate 221 to rotate to the left side of the second screen plate 2, the second motor 251 is started to drive the second driving shaft 252 and the fourth gear 253 to rotate clockwise to drive the second rack 24 to move rightward to drive the third gear 222 and the second rotating shaft 22 to rotate clockwise to enable the second rotating vane plate 221 to rotate to the right side of the second screen plate 2, and the rotating direction of the second rotating vane plate 221 is adjusted by controlling the rotating direction of the second motor 251.
Specifically, the rotating mechanism includes a first annular plate 4, a second annular plate 5, and a hydraulic cylinder 7.
First annular slab 4 and second annular slab 5 all are the semicircle ring-type, the one end of first annular slab 4 passes through second articulated shaft 41 and articulates the left side limit at first otter board 1, the one end of second annular slab 5 passes through third articulated shaft 51 and articulates the left side limit at second otter board 2, the other end of first annular slab 4 and the other end of second annular slab 5 pass through fourth articulated shaft 6 and articulate together.
The hydraulic oil cylinder 7 is an electro-hydraulic oil cylinder, a piston cylinder of the hydraulic oil cylinder 7 is hinged to the end portion of the first hinge shaft 3 through a fixing plate 71, and a piston rod of the hydraulic oil cylinder 7 is hinged to the fourth hinge shaft 6.
In an initial state, the first net plate 1 and the second net plate 2 are in the same vertical plane, when the angle between the first net plate 1 and the second net plate 2 needs to be adjusted, the hydraulic oil cylinder 7 is started to extend, the first net plate 1 and the second net plate 2 rotate oppositely around the first articulated shaft 3, the second net plate 2 of the two trawl net plates is in a vertical state by adjusting the length of the steel cable, the two first net plates 1 are turned to the inner side of the fishing net 8, the first vane plate 121 rotates reversely, the two trawl net plates move downwards under the action of water flow, the operation depth of the fishing net 8 is reduced, the first net plates 1 of the two trawl net plates are in a vertical state by adjusting the length of the steel cable, the two second net plates 2 are turned to the inner side of the fishing net 8, the second vane plate 221 rotates reversely, the two trawl net plates move upwards under the action of water flow, the operation depth of the fishing net 8 is lifted, the operation is simple, the response speed is high.
Specifically, two first limiting rods 123 are vertically arranged on the lower side wall of the first through hole 11, the two first limiting rods 123 are respectively located on the front side and the rear side of one of the first rotating shafts 12, when the first rotating blade 121 rotates counterclockwise around the first rotating shaft 12, there is at least one position, the first rotating blade 121 contacts with the first limiting rod 123 located on the rear side of the first rotating shaft 12, and when the first rotating blade 121 rotates clockwise around the first rotating shaft 12, there is at least one position, the first rotating blade 121 contacts with the first limiting rod 123 located on the front side of the first rotating shaft 12.
Preferably, two first pressure sensors are arranged on the first limiting rod 123, a first controller 154 is arranged in the first mounting cavity 15, and the two first pressure sensors are electrically connected with the first motor 151 through the first controller 154.
The two first limiting rods 123 can limit the rotation angle of the first rotating vane 121, when the first rotating vane 121 rotates clockwise to contact the first limiting rod 123 located on the front side of the first rotating shaft 12, the first pressure sensor on the first limiting rod 123 sends a signal to the first controller 154, the first controller 154 turns off the first motor 151, when the first rotating vane 121 rotates counterclockwise to contact the first limiting rod 123 located on the rear side of the first rotating shaft 12, the first pressure sensor on the first limiting rod 123 sends a signal to the first controller 154, the first controller 154 turns off the first motor 151, and the first rotating vane 121 is prevented from colliding with the side wall of the first through hole 11 when rotating, so that the first motor 151 is damaged.
Specifically, the lower sidewall of the second through hole 21 is vertically provided with two second limiting rods 223, the two second limiting rods 223 are respectively located at the front side and the rear side of one of the second rotating shafts 22, when the second rotating vane plate 221 rotates counterclockwise around the second rotating shaft 22, there is at least one position, the second rotating vane plate 221 contacts with the second limiting rod 223 located at the rear side of the second rotating shaft 22, when the second rotating vane plate 221 rotates clockwise around the second rotating shaft 22, there is at least one position, and the second rotating vane plate 221 contacts with the second limiting rod 223 located at the front side of the second rotating shaft 22.
Preferably, two second pressure sensors are arranged on the two second limiting rods 223, a second controller 254 is arranged in the second mounting cavity 25, and the two second pressure sensors are electrically connected with the second motor 251 through the second controller 254.
The two second limiting rods 223 can limit the rotation angle of the second rotating vane plate 221, when the second rotating vane plate 221 rotates clockwise to contact the second limiting rod 223 located on the front side of the second rotating shaft 22, the second pressure sensor on the second limiting rod 223 sends a signal to the second controller 254, the second controller 254 turns off the second motor 251, when the second rotating vane plate 221 rotates counterclockwise to contact the second limiting rod 223 located on the rear side of the second rotating shaft 22, the second pressure sensor on the second limiting rod sends a signal to the second controller 254, the second controller 254 turns off the second motor 251, and the second rotating vane plate 221 is prevented from colliding with the side wall of the second through hole 21 when rotating, so that the second motor 251 is damaged.
A method for using a trawl door with controllable net shape comprises the following steps:
1) one side of each trawl door is connected with a fishing boat 9 through a steel cable, and the other side of each trawl door is connected with two sides of a net opening of a fishing net 8 through the steel cable, and in an initial state, a first door 1 and a second door 2 of the two trawl doors are positioned in the same vertical plane;
2) when the net mouth needs to be contracted, the first motor 151 and the second motor 251 on the two trawl doors are started simultaneously, so that the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl door on the port side rotate anticlockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl door on the starboard side rotate clockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the two trawl doors open towards the outer side of the fishing net 8, the two trawl doors approach to each other under the action of water flow, and the net mouth of the fishing net 8 is contracted through the steel cable;
3) when the net mouth needs to be expanded, the first motor 151 and the second motor 251 on the two trawl doors are started simultaneously, so that the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl door on the port side rotate clockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl door on the starboard side rotate anticlockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the two trawl doors open towards the inner side of the fishing net 8, the two trawl doors are far away from each other under the action of water flow, and the net mouth of the fishing net 8 is expanded through the steel cable;
4) when the net mouth of the fishing net 8 needs to move to the port, the first motor 151 and the second motor 251 on the two trawl doors are started simultaneously, so that the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl doors on the port rotate clockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl doors on the starboard rotate clockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the two trawl doors open towards the starboard simultaneously, the two trawl doors move leftwards under the action of water flow, and the net mouth of the fishing net 8 is pulled by the steel cable to move to the port;
5) when the net mouth of the fishing net 8 needs to move to the starboard, the first motor 151 and the second motor 251 on the two trawl doors are started simultaneously, so that the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl doors on the port side rotate anticlockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the trawl doors on the starboard side rotate anticlockwise, the first rotating vane plate 121 and the second rotating vane plate 221 on the two trawl doors open towards the port side at the same time, under the action of water flow, the two trawl doors move rightwards, and the net mouth of the fishing net 8 is pulled by the steel cable to move to the starboard side;
6) when the net mouth needs to move downwards, the hydraulic oil cylinders 7 on the two trawl doors are started simultaneously to shorten the net mouth, the two first doors 1 are enabled to rotate towards the inner side of the fishing net 8, the first motors 151 on the two trawl doors are started simultaneously, the first rotating vane 121 on the trawl door on the port side is enabled to rotate anticlockwise, the first rotating vane 121 on the trawl door on the starboard side is enabled to rotate clockwise, the two trawl doors are driven to move downwards under the action of water flow, and the net mouth of the fishing net 8 is pulled to move downwards through the steel cable;
7) when the net gape needs the rebound, start hydraulic cylinder 7 on two trawl doors simultaneously and make it shorten, make two second otter boards 2 rotate to the inboard of fishing net 8, start the second motor 251 on two trawl doors simultaneously, make the second that is located on the trawl door of port turn vane 221 anticlockwise rotation, make the second that is located on the trawl door of starboard turn vane 221 clockwise rotation, under the effect of rivers, drive two trawl doors rebound, the net gape rebound through cable wire pulling fishing net 8.
When the first vane wheel 121 and the second vane wheel 221 on the two trawl doors rotate towards the inner side of the fishing net 8, the two trawl doors move towards the inner side of the fishing net 8, the net mouth is contracted, so that fishes in the fishing net 8 are prevented from escaping, when the first vane wheel 121 and the second vane wheel 221 on the two trawl doors rotate towards the outer side of the fishing net 8, the two trawl doors move towards the outer side of the fishing net 8, the net mouth is expanded, so that more fishes can enter the fishing net 8, when the fishing boat 9 moves towards the left, the first vane wheel 121 and the second vane wheel 221 on the two trawl doors are controlled to simultaneously turn towards the starboard, so that the two trawl doors move towards the starboard, the net mouth of the fishing net 8 moves towards the left side along with the fishing boat 9, when the fishing boat 9 moves towards the right, the first vane wheel 121 and the second vane wheel 221 on the two trawl doors are controlled to simultaneously turn towards the port, so that the two trawl doors move towards the starboard, the net 8 moves towards the right of the fishing boat 9, the flexibility of the fishing net 8 is improved; in addition, when making the first otter board 1 of two trawl otter boards turn to fishing net 8 inboardly, reverse rotation first otter board 121 on the first otter board 1 simultaneously, under the effect of rivers, two trawl otter boards remove downwards, drive the fish of fishing net 8 net gape catching the bottom downwards, when making the second otter board 2 of two trawl otter boards turn to fishing net 8 inboardly, reverse rotation second on the second otter board 2 simultaneously changes the bladed plate 221, under the effect of rivers, two trawl otter boards remove upwards, drive the fish of fishing net 8 net gape upwards catching the upper strata, improve the efficiency that fishing net 8 was caught.
In the description of this patent, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the patent and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the patent.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (1)
1. A use method of a trawl door with a controllable net shape is characterized by comprising the following steps:
1) one side of each trawl net plate is connected with a fishing boat (9) through a steel cable, and the other side of each trawl net plate is connected with two sides of a net opening of a fishing net (8) through the steel cable, and in an initial state, a first net plate (1) and a second net plate (2) of the two trawl net plates are positioned in the same vertical plane;
2) when the net mouth needs to be contracted, a first motor (151) and a second motor (251) on the two trawl doors are started simultaneously, so that a first rotating vane plate (121) and a second rotating vane plate (221) on the trawl door on the port side rotate anticlockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the trawl door on the starboard side rotate clockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the two trawl doors open towards the outer side of the fishing net (8), the two trawl doors are close to each other under the action of water flow, and the net mouth of the fishing net (8) is contracted through a steel cable;
3) when the net mouth needs to be expanded, a first motor (151) and a second motor (251) on the two trawl doors are started simultaneously, so that a first rotating vane plate (121) and a second rotating vane plate (221) on the trawl door on the port side rotate clockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the trawl door on the starboard side rotate anticlockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the two trawl doors open towards the inner side of the fishing net (8), under the action of water flow, the two trawl doors are far away from each other, and the net mouth of the fishing net (8) is expanded through a steel cable;
4) when the net mouth needs to move to the port, a first motor (151) and a second motor (251) on the two trawl doors are started simultaneously, so that a first rotating vane plate (121) and a second rotating vane plate (221) on the trawl doors on the port rotate clockwise, a first rotating vane plate (121) and a second rotating vane plate (221) on the trawl doors on the starboard rotate clockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the two trawl doors open towards the starboard simultaneously, the two trawl doors move leftwards under the action of water flow, and the net mouth of a fishing net (8) is pulled to move to the port through a steel cable;
5) when the net mouth needs to move to the starboard, a first motor (151) and a second motor (251) on the two trawl doors are started simultaneously, a first rotating vane plate (121) and a second rotating vane plate (221) on the trawl doors on the port side rotate anticlockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the trawl doors on the starboard side rotate anticlockwise, the first rotating vane plate (121) and the second rotating vane plate (221) on the two trawl doors open towards the starboard side simultaneously, the two trawl doors move rightwards under the action of water flow, and the net mouth of the fishing net (8) is pulled to move to the starboard side through a steel cable;
6) when the net mouth needs to move downwards, the hydraulic oil cylinders (7) on the two trawl net plates are started simultaneously to shorten the net mouth, the two first net plates (1) rotate towards the inner side of the fishing net (8), the first motors (151) on the two trawl net plates are started simultaneously, the first rotating vane plate (121) on the trawl net plate on the port side rotates anticlockwise, the first rotating vane plate (121) on the trawl net plate on the starboard side rotates clockwise, the two trawl net plates are driven to move downwards under the action of water flow, and the net mouth of the fishing net (8) is pulled to move downwards through the steel cable;
7) when the net gape needs the rebound, start hydraulic cylinder (7) on two trawl doors simultaneously and make it shorten, make two second otter boards (2) rotate to the inboard of fishing net (8), start second motor (251) on two trawl doors simultaneously, make second commentaries on classics bladed vane (221) anticlockwise rotation on the trawl door that is located the port, make second commentaries on classics bladed vane (221) clockwise rotation on the trawl door that is located the starboard, under the effect of rivers, drive two trawl doors rebound, the net gape rebound through cable wire pulling fishing net (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911241914.6A CN110839600B (en) | 2019-12-06 | 2019-12-06 | Trawl board with controllable net shape and using method |
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| CN201911241914.6A CN110839600B (en) | 2019-12-06 | 2019-12-06 | Trawl board with controllable net shape and using method |
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| CN110839600A CN110839600A (en) | 2020-02-28 |
| CN110839600B true CN110839600B (en) | 2021-07-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111436404B (en) * | 2020-04-15 | 2022-03-18 | 浙江海洋大学 | Double-cambered surface trawl net plate |
| CN112205363A (en) * | 2020-09-16 | 2021-01-12 | 中国水产科学研究院东海水产研究所 | Active adjustment type trawl door and adjusting method thereof |
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| CN206251766U (en) * | 2016-11-23 | 2017-06-16 | 中国水产科学研究院东海水产研究所 | A kind of rectangular curved netting plate |
| CN108289438A (en) * | 2015-11-18 | 2018-07-17 | Mld私人有限责任公司 | Trawlnet door with adjusting apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU1768097C (en) * | 1990-07-09 | 1992-10-15 | Научно-Производственное Объединение "Севрыбпоиск" | Otter |
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| SU743657A1 (en) * | 1978-01-16 | 1980-06-30 | Специальное Экспериментально- Конструкторское Бюро Промышленного Рыболовства | Apparatus for horizontal opening of trawl mouth |
| CN103813710A (en) * | 2011-07-22 | 2014-05-21 | 阿特利·马尔·约瑟法特森 | A trawl door or paravane with remote control adjustment |
| CN202842219U (en) * | 2012-08-13 | 2013-04-03 | 辽宁省海洋水产科学研究院 | Disaster jellyfish mincing device |
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| CN110839600A (en) | 2020-02-28 |
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