CN212488068U - Fast-descending vertical trawl used for biological resource investigation of Antarctic sea area - Google Patents
Fast-descending vertical trawl used for biological resource investigation of Antarctic sea area Download PDFInfo
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- CN212488068U CN212488068U CN202021735398.0U CN202021735398U CN212488068U CN 212488068 U CN212488068 U CN 212488068U CN 202021735398 U CN202021735398 U CN 202021735398U CN 212488068 U CN212488068 U CN 212488068U
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- bracing piece
- trawl
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- foot line
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Abstract
The utility model relates to a perpendicular trawl of fast fall formula that antarctic sea area biological resources investigation used, including receiving and releasing the foot line, the net gape foot line, the bracing piece, the center support, the netting, connecting platform and collecting vessel, the lower extreme that receives and releases the foot line is connected with the center support, the center support is radially to be equipped with a plurality of bracing pieces along circumference, the medial extremity and the center support rotatable coupling of bracing piece, the bottom and the center support of bracing piece form the spacing support of horizontal direction when the bracing piece rotates the level downwards, the net gape foot line adopts the elasticity foot line and is connected with the bracing piece outside end of circumference, the upper end and the net gape foot line of netting are connected, the lower extreme is connected with connecting platform and is the infundibulate when the netting expandes, be connected through quick detachable construction between the upper end. The utility model discloses can realize drawing in of perpendicular trawl and store, transport and put in, be favorable to improving the falling speed that the trawl was put in the water, effectively avoid the emergence of the condition of toppling, make things convenient for the sample.
Description
Technical Field
The utility model belongs to the technical field of marine organism is adopted and is caught sample netting gear, especially relate to a fast descending formula perpendicular trawl that south Pole sea area biological resources investigation used.
Background
The marine plankton comprises zooplankton and phytoplankton, the research of the plankton is an important way for researching subjects such as marine biological resources, marine environment, fishery ecology and fish biology, the sampling depth of the plankton is from dozens of meters to hundreds of meters according to the sea area conditions, particularly, in the investigation of biological resources such as euphausia superba and the like in the Antarctic sea area, the biological sampling depth can reach more than 200 meters, and the sampling site usually needs dozens or even hundreds of sites, so the workload is huge.
The current common plankton sampling technology is to use a funnel-shaped vertical trawl net, place the vertical trawl net to a certain depth by using a wire rope winch, and then pull up the trawl net for sampling. The diameter of the net opening of the vertical trawl is about 1m generally, and the shape is fixed by connecting a steel pipe circle with the net opening. Under this kind of structure, if the net gape size is too big then should not carry, increases the operation degree of difficulty simultaneously, and the net gape size is restricted also influences biological collection efficiency. The net mouth is generally parallel to the water surface when the vertical trawl is transferred, the vertical trawl can slightly incline under the action of water flow, the descending resistance is large, and the descending speed is influenced, so that the sampling time is prolonged, and the workload is increased. In addition, the lower part of the net port supported by the steel pipe ring is connected with the collecting container, so that when the storm is large or the flow velocity is large, the situation that the collecting container at the bottom is turned up to enter the net port can occur, and the sampling work cannot be completed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a fast fall formula perpendicular trawl that antarctic sea area biological resources investigation was used is provided, can realize drawing in storage, transportation and input of perpendicular trawl, is favorable to improving the falling speed that the trawl was put in the water, effectively avoids the emergence of the condition of toppling, makes things convenient for the sample.
The technical proposal adopted by the utility model for solving the technical problems is to provide a fast-descending vertical trawl for the investigation of the biological resources in the Antarctic sea area, which comprises a folding and unfolding line, a net mouth edge line, a support bar, a central support, a netting, a connecting platform and a collecting bucket, the lower end of the take-up and pay-off line is connected with a central support, the central support is radially provided with a plurality of support rods along the circumferential direction, the inner side end of the supporting rod is rotatably connected with the central support, the bottom of the supporting rod and the central support form a horizontal limiting support when the supporting rod rotates downwards to a horizontal position, the net mouth border line adopts the elasticity rule and is connected with the bracing piece outside end of circumference, the upper end and the net mouth border line of netting are connected, the lower extreme is connected with connecting platform and the netting is the infundibulate when expanding, be connected through quick detachable construction between the upper end of collecting vessel and the connecting platform.
When the vertical trawl is in a suspension state or in a descending state in seawater and the supporting rod rotates upwards until the net opening is folded, the net opening is kept folded by the pretightening force of the net opening edge line; when the vertical trawl is in an upward lifting state in seawater, the support rod is rotated downwards to a horizontal position under the action of water resistance, so that a net opening is unfolded.
The utility model discloses a bracing piece support, including the center support, be radially formed a plurality of bracing piece draw-in grooves along circumference on the center support, the both sides of bracing piece draw-in groove are equipped with parallel draw-in groove board respectively, vertical rotation spacing groove has been seted up to the bottom of bracing piece draw-in groove, the outside of vertical rotation spacing groove is equipped with the level and supports spacing boss, the medial extremity of bracing piece insert in the bracing piece draw-in groove and with the rotatable coupling of draw-in groove board of both sides, the bracing piece supports through the spacing boss of level support when rotating down to the level and forms spacing, upwards rotates when extreme position and carries on spacingly through the spacing end in the vertical.
A safety rope is connected between the central support and the collecting barrel, and the safety rope is detachably connected with the collecting barrel.
The central position of the central support penetrates through the central support and is sleeved with a connecting piece, the upper end of the connecting piece is provided with an upper connecting ring, the lower end of the connecting piece is provided with a lower connecting ring, the lower end of the retractable rope is connected with the upper connecting ring, and the upper end of the safety rope is connected with the lower connecting ring.
The connecting platform is circumferentially provided with a bottom line connecting hole, the bottom end of the netting is connected with the bottom line, and the bottom line is connected with the connecting platform through the bottom line connecting hole.
The connecting platform comprises a connecting ring, the connecting ring is provided with a plurality of rotary clamping grooves along the circumferential direction, the top of the collecting barrel is provided with a supporting clamping beam corresponding to the rotary clamping grooves, and the supporting clamping beam is inserted into the rotary clamping grooves to realize installation connection and disassembly through relative rotation between the connecting platform and the collecting barrel.
The collecting barrel includes top circle, outer support, foundation ring, support card roof beam, support floorbar and gauze, be connected through the outer support along circumference between top circle and the foundation ring, the top circle is inside to be supported the reinforcement through supporting the card roof beam, the foundation ring is inside to be supported the reinforcement through supporting the floorbar, the gauze is installed and is uncovered in the top on outer support and the support floorbar.
The utility model provides a technical scheme that its technical problem adopted provides the application method of the perpendicular trawl of formula that declines of foretell south Pole sea area biological resources investigation use, including following step:
(1) the vertical trawl is suspended on a hoisting winch and is in a furled state;
(2) the hoisting winch is utilized to continuously release the retractable rope, so that the vertical trawl net is settled after entering water, and the support rod is kept in a furled state under the action of upward water resistance in the settling process;
(3) after the throwing depth of the vertical trawl reaches the experimental requirement, operating a hoisting winch to lift the vertical trawl upwards, enabling a support rod to rotate downwards to enable a trawl opening to reach an unfolded state under the action of downward water resistance on the vertical trawl in the lifting process, and collecting the vertical trawl to an investigation ship;
(4) and (4) quickly unloading the collecting barrel from the connecting platform, and collecting plankton samples collected in the collecting barrel.
And (3) connecting a counterweight on the connecting platform as required in the step (2), wherein the position of the counterweight is lower than the height of the collecting barrel, and the trawl opening cannot be pulled away under a natural suspension state.
Advantageous effects
First, the utility model discloses a perpendicular trawl can fold and draw in, has made things convenient for storage, the transportation of trawl.
Second, the utility model discloses a perpendicular trawl can keep the draw in state at the decline in-process, conveniently puts in the operation, promotes the in-process and utilizes the water resistance to realize that the trawl net mouth expandes automatically, and is easy and simple to handle. The utility model discloses can improve the falling speed that the water was put into to the trawl to improve biological sampling's efficiency, this perpendicular trawl that also is favorable to jumbo size net gape develops the realization of investigation experiment in deep sea area. In addition, the trawl net can be kept in a furled state, the overturning condition can be effectively avoided, the condition that the bottom collecting container is turned over to enter a net port due to the fact that wind waves are large or the flow velocity is large is prevented, and smooth completion of sampling work is guaranteed.
Third, the utility model discloses well collecting vessel designs for the structure that can install fast and dismantle, can lift the collecting vessel off rapidly when gathering biological sample, reaches the purpose that in time send kind, is favorable to improving the accuracy of investigation result.
Drawings
Fig. 1 is a schematic structural view of the present invention in the unfolded state.
Fig. 2 is a schematic structural view of the fully folded state of the present invention.
Fig. 3 is a schematic structural view of the expanded state of the net mouth supporting rod.
Fig. 4 is a schematic structural view of the net mouth supporting rod in a furled state.
Fig. 5 is a schematic view of a connection structure of the support rod and the center support.
Fig. 6 is a schematic structural diagram of the bottom of the trawl connected with the collecting barrel through the connecting platform.
Fig. 7 is a schematic diagram of a preassembly structure between the connecting platform and the collecting barrel.
Fig. 8 is a schematic structural view of the collecting barrel.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
The fast-descending vertical trawl used for the biological resource investigation of the Antarctic sea area as shown in the figure 1 and the figure 2 comprises a receiving and releasing line 1, a net opening frontier 3, a support rod 4, a central support 5, a netting 6, a connecting platform 24 and a collecting barrel 9.
The retractable steel line 1 is a retractable steel rope of the vertical trawl and made of a steel wire rope, and the lower end of the retractable steel line 1 is connected with the central support 5. The central support 5 is a stainless steel welding part, a through hole is formed in the center of the central support 5, a stainless steel connecting piece penetrates through the central through hole on the central support 5, as shown in fig. 3, an upper connecting ring 2 is arranged at the upper end of the connecting piece, a lower connecting ring 10 is arranged at the lower end of the connecting piece, and the lower end of the take-up and pay-off line 1 is connected with the upper connecting ring 2.
As shown in fig. 1 and 3, six support rods 4 are radially arranged on the central support 5 along the circumferential direction, each support rod 4 is an aluminum alloy rod with the length of about 700mm, the width of 20mm and the thickness of 8mm, holes are formed in two ends of each support rod, the holes in the outer ends of the support rods are outer holes 11 and the hole diameters of 8mm, and the holes in the inner ends of the support rods are inner holes 15 and the hole diameters of 11 mm. The inner end of the support rod 4 is rotatably connected with the central support 5. As shown in fig. 4 and 5, six support rod clamping grooves 12 are radially formed on the central support 5 along the circumferential direction, parallel clamping groove plates 14 are respectively arranged on two sides of each support rod clamping groove 12 at an interval of 10mm, and symmetrical clamping groove openings 19 are formed in the clamping groove plates 14 on the two sides. The inner side end of the support rod 4 is inserted into the support rod clamping groove 12 and is rotatably connected with the clamping groove plates 14 on the two sides through a bolt 13, and the bolt 13 penetrates through the support rod inner side hole 15 and the clamping groove opening 19 on the clamping groove plates 14 on the two sides and is limited by screwing a nut.
The bottom that corresponds bracing piece draw-in groove 12 on the central brace 5 has seted up vertical rotation spacing groove 16, and the inner of vertical rotation spacing groove 16 is the circular arc structure, and the outer end is wedge-shaped spacing end 17, and the outside of vertical rotation spacing groove 16 is equipped with the spacing boss 18 of horizontal support. When the support rod 4 rotates downwards to the horizontal position, the bottom of the support rod 4 can be supported by the horizontal support limiting boss 18 to form the limitation in the horizontal direction, and the support strength of the support rod 4 is improved. When the bracing piece 4 upwards rotates to extreme position, spacing end 17 through the vertical spacing groove 16 outside of rotating carries on spacingly to the inner bottom angle 20 of bracing piece 4, prevents that bracing piece 4 from upwards excessively rotating, and spacing end 17's wedge right-angle side is 85 with the contained angle that the center supported 5, can not reach the vertical position after making the bracing piece 4 fold up, is in slightly outer open state, in time opens after receiving the rivers impulsive force when being convenient for upwards promote the trawl. The outer bottom angle 21 of the support rod 4 is set to be a chamfer structure, which is beneficial to improving the smoothness of the rotation of the support rod 4.
The outer side end of the supporting rod 4 is connected with the net opening edge line 3 into a ring through a supporting rod outer hole 11, and the net opening edge line 3 is used for supporting the shape of the net opening. The upper end of the netting 6 is connected with the net opening edge line 3, the lower end is connected with the connecting platform 24, and the netting 6 is funnel-shaped when unfolded. The netting 6 is a nylon gauze with mesh of 1mm and is used for capturing marine organisms. The net opening edge line 3 is an elastic line, the elasticity of the net opening edge line 3 needs to meet the following condition, and when the vertical trawl is in a suspension state or in a descending state in seawater and the supporting rod 4 rotates upwards until the net opening is folded, the pretightening force of the net opening edge line 3 enables the net opening to be kept folded; when the vertical trawl is in an upward lifting state in seawater, the pretightening force of the net mouth edge line 3 can be overcome under the action of water resistance, so that the supporting rod 4 rotates downwards to a horizontal position to enable the net mouth to be unfolded.
As shown in fig. 6, the connecting platform 24 is circumferentially provided with a foot line connecting hole 28 with a diameter of 5mm, the bottom end of the netting 6 is connected with the foot line, and the foot line is connected with the connecting platform 24 through the foot line connecting hole 28. As shown in fig. 8, the collecting barrel 9 comprises a top ring 29, an outer support 25, a bottom ring 27, a support clamp beam 23, a support bottom beam 32 and a gauze 26, and the main structure of the collecting barrel 9 is made of stainless steel material. The top ring 29 and the bottom ring 27 are connected by the outer supports 25 which are evenly distributed at intervals along the circumferential direction. The top ring 29 is internally supported and reinforced by the three supporting clamping beams 23, the three supporting clamping beams 23 are uniformly distributed along the circumferential direction of the top ring 29 at intervals, and the supporting clamping beams 23 are 6mm in width and 5mm in thickness. The inside of the foundation ring 27 is supported and reinforced by three supporting bottom beams 32, and the three supporting bottom beams 32 are uniformly distributed at intervals along the circumferential direction of the foundation ring 27. The gauze 26 is a nylon gauze with a mesh of 1mm, is arranged on the outer support 25 and the support bottom beam 32, and the top of the gauze 26 is open and is used for collecting plankton captured in the netting 6.
The upper end of the collecting barrel 9 is connected with the connecting platform 24 through a quick detachable structure. As shown in fig. 7, the connection platform 24 includes a connection ring 22, three rotation locking slots 30 are uniformly arranged on the connection ring 22 at intervals along the circumferential direction, the rotation locking slots 30 are similar to an inverted "concave" structure, three support locking beams 23 on the top of the collection barrel 9 are inserted into the rotation locking slots 30, and rapid installation connection and disassembly are realized through relative rotation between the connection platform 24 and the collection barrel 9. The central point that supports card roof beam 23 puts and is fixed with stainless steel's collecting vessel go-between 22, is connected with safety rope 7 between center support 5 and the collecting vessel 9, and safety rope 7 upper end is connected with go-between 10 down, and the lower extreme passes through spring hook 8 to be connected with collecting vessel go-between 22, the high-speed joint and the dismantlement of being convenient for. Through the safety rope 7, the collecting barrel 9 can be effectively prevented from being lost after being separated.
When the rapid-descending vertical trawl used for investigating the biological resources in the Antarctic sea area is used:
(1) firstly, the vertical trawl net is suspended on the hoisting winch, and the vertical trawl net is in a furled state
(2) The hoisting winch is utilized to continuously release the retractable rope 1, so that the vertical trawl net is settled after entering water, and the support rod 4 is kept in a furled state under the action of water resistance in an upward direction in the settling process. If the weight of the bottom is insufficient or the flow rate is too large, the trawl transversely drifts, the counterweight can be connected on the connecting platform 24 according to the situation, the position of the counterweight cannot be higher than the collecting bucket 9, and the trawl opening cannot be pulled open under the natural suspension state.
(3) After the vertical trawl throwing depth reaches the experimental requirement, the hoisting winch is operated to upwards hoist the vertical trawl, the vertical trawl in the hoisting process is subjected to the action of the downward water resistance to enable the support rod 4 to downwards rotate so that the trawl opening reaches the unfolding state, and the vertical trawl is collected to the survey ship.
(4) The vertical trawl is received on the deck and is connected to the hoisting winch, the collecting barrel 9 can be pushed upwards slightly and rotates anticlockwise, the supporting clamping beam 23 can be separated from the rotating clamping groove 30, then the spring hook 8 at the lower part of the safety rope 7 at the upper part of the collecting barrel 9 is opened from the collecting barrel connecting ring 22 and taken down, and samples in the collecting barrel 9 are collected. According to the requirement, the other collecting barrel 9 can be replaced in time for continuous sampling, or the sampling work can be continued after the next investigation station is reached.
The utility model discloses a perpendicular trawl can keep the state of drawing in at the decline in-process, promotes the automatic expansion that the in-process utilized water resistance to realize the trawl net mouth, and is easy and simple to handle, is favorable to improving the falling speed that the trawl put in the water. It should be noted that, in the practical application process, the vertical trawl may be difficult to keep the complete furled state all the time due to the action of the forced water flow in the descending process, but is in the dynamic change process of furling and unfolding close to the furled state, i.e. the relative furled state, and the relative furled state can also achieve the purpose of improving the descending speed of the vertical trawl, and should be considered as belonging to the furled state and protected by the present invention.
Claims (8)
1. The utility model provides a perpendicular trawl of fast descending formula that south Pole sea area biological resources investigated and used, is including receiving and releasing class (1), net gape outline (3), bracing piece (4), central support (5), netting (6), connection platform (24) and collecting vessel (9), its characterized in that: receive and release the lower extreme and the center support (5) of class (1) and be connected, the center support (5) are radially along circumference and are equipped with a plurality of bracing pieces (4), the medial extremity and the center support (5) rotatable coupling of bracing piece (4), the bottom and the center support (5) of bracing piece (4) form the limit support of horizontal direction when bracing piece (4) rotate down the level position, net gape foot (3) adopt the flexible foot line and be connected with bracing piece (4) outside end of circumference, the upper end and the net gape foot line (3) of netting (6) are connected, the lower extreme is connected with connection platform (24) and netting (6) are the infundibulate when launching, be connected through quick detachable construction between the upper end of collecting vessel (9) and connection platform (24).
2. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 1, characterized in that: when the vertical trawl is in a suspension state or in a descending state in seawater and the supporting rod (4) rotates upwards until the net opening is folded, the net opening is kept folded by the pretightening force of the net opening bole (3); when the vertical trawl is in an upward lifting state in seawater, the support rod (4) is rotated downwards to a horizontal position under the action of water resistance, so that a net opening is unfolded.
3. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 1, characterized in that: the utility model discloses a support structure, including central support (5), be along circumference on the central support (5) and radially form a plurality of bracing piece draw-in grooves (12), the both sides of bracing piece draw-in groove (12) are equipped with parallel draw-in groove board (14) respectively, vertical rotation spacing groove (16) have been seted up to the bottom of bracing piece draw-in groove (12), the outside of vertical rotation spacing groove (16) is equipped with horizontal support spacing boss (18), the medial extremity of bracing piece (4) insert in bracing piece draw-in groove (12) and with the rotatable coupling of draw-in groove board (14) of both sides, bracing piece (4) support spacing boss (18) through horizontal support when rotating to the horizontal position down and form spacing, upwards rotate spacing through spacing end (17) in the vertical rotation spacing groove (16) outside when extreme position and carry on spacin.
4. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 1, characterized in that: a safety rope (7) is connected between the central support (5) and the collecting barrel (9), and the safety rope (7) is detachably connected with the collecting barrel (9).
5. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 4, wherein: the central position of the central support (5) penetrates through the central support (5) and is sleeved with a connecting piece, the upper end of the connecting piece is provided with an upper connecting ring (2), the lower end of the connecting piece is provided with a lower connecting ring (10), the lower end of the retractable rope (1) is connected with the upper connecting ring (2), and the upper end of the safety rope (7) is connected with the lower connecting ring (10).
6. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 1, characterized in that: the connecting platform (24) is circumferentially provided with a foot line connecting hole (28), the bottom end of the netting (6) is connected with the foot line, and the foot line is connected with the connecting platform (24) through the foot line connecting hole (28).
7. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 1, characterized in that: the connecting platform (24) comprises a connecting ring (22), the connecting ring (22) is provided with a plurality of rotary clamping grooves (30) along the circumferential direction, the top of the collecting barrel (9) is provided with supporting clamping beams (23) corresponding to the rotary clamping grooves (30), and the supporting clamping beams (23) are inserted into the rotary clamping grooves (30) to achieve installation connection and disassembly through relative rotation between the connecting platform (24) and the collecting barrel (9).
8. The fast-descending vertical trawl used for biological resource survey in Antarctic ocean according to claim 1, characterized in that: the collecting bucket (9) include top circle (29), outer support (25), foundation ring (27), support card roof beam (23), support floorbar (32) and gauze (26), be connected through outer support (25) along circumference between top circle (29) and foundation ring (27), top circle (29) inside supports the reinforcement through supporting card roof beam (23), foundation ring (27) inside supports the reinforcement through supporting floorbar (32), gauze (26) are installed and are uncovered on outer support (25) and support floorbar (32) and the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021735398.0U CN212488068U (en) | 2020-08-19 | 2020-08-19 | Fast-descending vertical trawl used for biological resource investigation of Antarctic sea area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021735398.0U CN212488068U (en) | 2020-08-19 | 2020-08-19 | Fast-descending vertical trawl used for biological resource investigation of Antarctic sea area |
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| Publication Number | Publication Date |
|---|---|
| CN212488068U true CN212488068U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021735398.0U Withdrawn - After Issue CN212488068U (en) | 2020-08-19 | 2020-08-19 | Fast-descending vertical trawl used for biological resource investigation of Antarctic sea area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111903627A (en) * | 2020-08-19 | 2020-11-10 | 中国水产科学研究院东海水产研究所 | Rapid-descending vertical trawl used for biological resource survey in Antarctic sea area and use method |
-
2020
- 2020-08-19 CN CN202021735398.0U patent/CN212488068U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111903627A (en) * | 2020-08-19 | 2020-11-10 | 中国水产科学研究院东海水产研究所 | Rapid-descending vertical trawl used for biological resource survey in Antarctic sea area and use method |
| CN111903627B (en) * | 2020-08-19 | 2023-10-20 | 中国水产科学研究院东海水产研究所 | Quick-descending vertical trawl for investigation of biological resources in Antarctic sea area and use method |
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