CN112314492B - Automatic folding netting system and operation method - Google Patents
Automatic folding netting system and operation method Download PDFInfo
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- CN112314492B CN112314492B CN202011212467.4A CN202011212467A CN112314492B CN 112314492 B CN112314492 B CN 112314492B CN 202011212467 A CN202011212467 A CN 202011212467A CN 112314492 B CN112314492 B CN 112314492B
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- netting
- guide rail
- top pulley
- pulley
- small
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
An automatically foldable netting system and an operation method thereof belong to the technical field of cage culture. The automatic folding netting system is relatively simple in structure and high in efficiency, and can achieve simultaneous netting disassembly and assembly. A plurality of top pulley device and a plurality of miniature pulley difference slidable mounting are on rail means, rail means installs on box with a net floating frame, every top pulley device all passes through the polyethylene rope with the miniature pulley that corresponds of bottom and is connected, two nettings are used for wearing to two polyethylene ropes of stranded polymer, two equal slidable mounting of autonomic thrust unit are on rail means, two autonomic thrust unit promote the top pulley device and remove, two small-size hoist engine symmetries are installed on box with a net floating frame, two small-size hoist engines are used for two nettings of lift. The invention utilizes the netting folding system to disassemble the netting, can reduce the burden brought by underwater cleaning of the netting to a certain extent, and simultaneously saves more manpower when the netting is replaced.
Description
Technical Field
The invention belongs to the technical field of cage culture, and particularly relates to an automatically foldable netting system and an operation method.
Background
In recent years, in order to change the current situation that ecological environment is continuously deteriorated due to too intensive coastal shallow sea and gulf cultivation, the deep sea cage culture industry is vigorously developed. Compared with the traditional culture net cage, the deep sea net cage structurally adopts new materials such as HDPE, light high-strength aluminum alloy, special stainless steel and the like, adopts various corrosion-resistant and ageing-resistant technologies, and greatly improves the overall structural strength of the net cage.
With the popularization of new materials and new technology application, related technical means are updated and iterated to some extent, the level of mechanization is continuously improved, manpower and material resources are greatly saved, the requirements on technical diversity related to marine aquaculture net cages are gradually increased, and meanwhile, the requirements on the level of mechanization of net cage and netting replacement and installation means are also higher and higher. The traditional method for replacing netting by manpower has limited mechanization level, if the gravity full-floating net cage with the circumference of 50m needs 6 persons to operate, only 3 nets can be replaced one day, and time and labor are wasted. The invention improves the traditional net cage and netting replacement method in a complicated and time-consuming manner, and improves the net replacement efficiency.
Disclosure of Invention
Aiming at the problem of detaching and replacing the netting of the traditional gravity type full-floating net cage, the invention provides the automatic folding netting system which has relatively simple structure and higher efficiency and can realize simultaneous detachment and installation of the netting.
The technical scheme adopted by the invention is as follows: an automatically foldable netting system comprises a rail device, a net cage floating frame, two independent pushing devices, two netting pieces, two small winches, a plurality of top pulley devices, a plurality of micro pulleys and a plurality of strands of high polymer polyethylene ropes; a plurality of top pulley gear and a plurality of miniature pulley difference slidable mounting are on rail means, rail means installs on box with a net floating frame, every top pulley gear all passes through the polyethylene rope with the miniature pulley that corresponds of bottom and is connected, stranded polymer polyethylene rope is used for wearing two nettings even, two autonomic thrust unit equal slidable mounting are on rail means, and two autonomic thrust unit promote the top pulley gear and remove, two small-size hoist engine symmetries are installed on box with a net floating frame, and two small-size hoist engines are used for two nettings of lift.
An operation method of a netting system capable of automatically folding,
s1, preparing two pieces of netting to be replaced, and hoisting the netting to an underwater preset position by using two small winches respectively;
s2, a diver manually opens a bottom guide rail seal under water, sequentially installs a plurality of micro pulleys to the bottom guide rail, and closes the bottom guide rail seal to prevent the micro pulleys from derailing;
s3, after the replacement and the netting to be replaced are threaded through the multi-strand high-molecular polyethylene ropes, respectively connecting one end, located on the water surface, of the multi-strand high-molecular polyethylene ropes to a top pulley device, then unlocking the top pulley device in a locked state, and starting an autonomous pushing device;
s4, pressing a start-stop button or an optional sensor to stop when the two autonomous pushing devices respectively move for a half cycle to the obstacle small-sized winch, and taking down the multi-strand high-polymer polyethylene rope connected with the replaced netting in a penetrating manner from the top pulley device to be hung on the small-sized winch;
and S5, opening a guide rail seal of the bottom guide rail on the underframe, sliding the micro pulley away from the guide rail, installing the guide rail seal, starting the small winch to lift the netting off the water surface, and simultaneously completing the installation and the disassembly of the netting.
The invention has the beneficial effects that:
when the invention is in operation, the top pulley moves on the track on the floating frame, the pulling force is transmitted to the micro pulley of the bottom frame through the multi-strand high polymer polyethylene rope, the netting is driven to move, the folding and stretching effects of the netting are achieved, the structure is relatively simple, and the efficiency is higher. The net can be disassembled by utilizing the net folding system, so that the burden caused by underwater cleaning of the net can be reduced to a certain extent, and the labor is saved when the net is replaced.
Drawings
FIG. 1 is a schematic view of the overall construction of the present invention in operation;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the bottom rail and bottom micro-pulley and bottom rail seal of FIG. 1;
FIG. 4 is a schematic view of the connection of the bottom rail to the micro-pulley of FIG. 1;
FIG. 5 is a schematic view of the top rail and pulley arrangement of FIG. 1;
FIG. 6 is a schematic view of the one-piece connector of FIG. 1;
FIG. 7 is a schematic view of the semicircular clip used to secure the rail of FIG. 1 (the present component is referenced in the patent application CN201920757598.7 for semicircular clip);
wherein: 1. a net cage floating frame; 2. a small-sized winch; 3. a top pulley arrangement; 4. a top pulley track; 5. a safety rope; 6. an autonomous propulsion device; 7. a high molecular polyethylene rope; 8. netting; 9. a bottom rail; 10. a micro pulley; 11. sealing the guide rail; 12. an integral connector; 13. a chassis.
Detailed Description
As shown in fig. 1 to 4, an automatically foldable netting system includes a rail device, a net cage floating frame 1, a net cage chassis 13, two autonomous pushing devices 6, two netting 8, two small winches 2, a plurality of top pulley devices 3, a plurality of micro pulleys 10, a bottom guide rail 9 and a multi-strand high polymer polyethylene rope 7; the plurality of top pulley devices 3 and the plurality of micro pulleys 10 are respectively slidably mounted on the rail device, the track device is arranged on the floating frame 1 of the net cage, each top pulley device 3 is connected with a corresponding micro pulley 10 at the bottom through a high molecular polyethylene rope 7, the two self-propelled pushing devices 6 push the top pulley device 3 to move from one end of the small-sized winch 2 and transmit the pulling force to the micro pulley 10 at the bottom through the high molecular polyethylene rope 7, thereby folding the netting 8, the multi-strand high polymer polyethylene ropes 7 are respectively used for wearing two netting 8, the two autonomous pushing devices 6 are both arranged on the track device in a sliding way, the two autonomous pushing devices 6 push the top pulley device 3 to move, the two small-sized windlasses 2 are symmetrically arranged on the net cage floating frame 1, and the two small-sized windlasses 2 are used for lifting two netting pieces 8.
The two pieces of netting 8 are netting which are respectively arranged at two sides of the net cage floating frame 1, and the side edges of the netting 8 are respectively tied on a vertical rod frame which is positioned below the small-sized winch 2;
the track device comprises a top pulley track 4 and a bottom guide rail 9, wherein the top pulley track 4 is lapped on a cantilever structure of a plurality of integrated connecting pieces 12, and the top pulley track and the cantilever structure can be mechanically connected through a semicircular buckle and can also be fixedly connected through other feasible modes; the bottom guide rail 9 is installed on the underframe 13 of the net cage floating frame 1 and is mechanically connected with the bottom guide rail through a semicircular buckle, and the bottom guide rail 9 is formed by detachably connecting two semicircular guide rails through a guide rail seal 11. Two ends of the two semicircular guide rails are respectively provided with a bottom guide rail seal 11. The guide rail seal 11 is composed of a connecting plate and a bolt.
As shown in fig. 7, the semicircular buckle is a prior art and can adopt the semicircular buckle patent with application number CN 201920757598.7;
two holes arranged at the bottom of the integrated connecting piece 12 are respectively penetrated by the inner floating pipe and the outer floating pipe of the net cage floating frame 1, and a top cantilever part of the integrated connecting piece 12 is used for arranging the top pulley track 4.
The micro pulleys 10 are distributed on the bottom guide rail 9 in the number of one micro pulley per meter on average, and the plurality of micro pulleys 10 simultaneously play a role in fixing the net and keeping the shape of the net 8 in the bottom guide rail 9.
Each micro pulley 10 is correspondingly connected with a macromolecular polyethylene rope 7, and the other ends of the macromolecular polyethylene ropes 7 are connected in series by a safety rope 5.
As shown in fig. 4, a cavity for placing a micro pulley 10 is arranged in the bottom guide rail 9, the micro pulley 10 is composed of a roller shaft and a roller rotatably mounted on the roller shaft, the lower end of the high molecular polyethylene rope 7 is wound on the roller shaft, and a first annular through hole for allowing the high molecular polyethylene rope 7 to penetrate through the bottom guide rail 9 is formed in the upper surface of the bottom guide rail 9.
As shown in fig. 5, top pulley track 4 is annular U groove structure, every top pulley track 4 all adopts four-wheel vehicle body structure to place a plurality of top pulley device 3 in top pulley track 4's notch, can be through round pin axle with top pulley device 3 locking on top pulley track 4, polymer polyethylene rope 7 upper end and four-wheel vehicle body structure's connected to the frame, the annular through-hole dual-purpose has been seted up to top pulley track 4 bottom and has been used for wearing out polymer polyethylene rope 7.
The netting 8 can be made of polyethylene, polypropylene or polyvinyl chloride by sewing with folded yarn. Two small-sized windlasses 2 are symmetrically arranged on a net cage floating frame 1 of the netting folding system and used for lifting a folded netting 8. The top of integral type connecting piece 12 sets up top pulley gear 3, and 3 afterbody in top pulley gear set sets up autonomic thrust unit 6, and top pulley gear 3 moves at top pulley track 4 on the cantilever end of integral type connecting piece 12, and top pulley gear 3 can be followed the handrail and be circular motion. The top pulley device 3 is connected with the micro pulley 10 of the net cage chassis 13 up and down through a high polymer polyethylene rope 7, the movement of the top pulley device 3 can drive the micro pulley 10 to move, and the micro pulley 10 takes the chassis 13 as a track. Netting 8 wears the knot through polymer polyethylene rope 7, and the motion of top pulley gear 3 drives netting 8 and the miniature pulley 10 of bottom and is circular motion, reaches netting 8's automatic folding effect to small-size hoist engine 2 is the motion terminal point, finally utilizes small-size hoist engine 2 to take out the surface of water with 8 lifts of netting after folding.
Two netting 8 of waiting to change of automatic folding netting system can arrange under water in advance to the folding gesture is binded on the vertical pole under small-size hoist engine 2, and one side is connected through polymer polyethylene rope 7 with the netting 8 that extends, or arranges netting 8 under water again when changing, introduces here according to the latter mode, dismantles the concrete implementation mode of netting 8 and installation, introduces as follows: the method comprises the following steps:
s1, preparing two pieces of netting 8 to be replaced, and respectively hoisting the netting to an underwater preset position by using two small winches 2;
s2, a diver manually opens a bottom guide rail seal 11 under water, sequentially installs a plurality of micro pulleys 10 to a bottom guide rail 9, and closes the bottom guide rail seal 11 to prevent the micro pulleys 10 from derailing;
s3, after the netting 8 to be replaced and replaced is threaded through the multi-strand high-molecular polyethylene ropes 7, connecting one ends, located on the water surface, of the multi-strand high-molecular polyethylene ropes 7 to the top pulley device 3 respectively, then unlocking the top pulley device 3 in the locked state, and starting the autonomous pushing device 6;
s4, when the two autonomous pushing devices 6 respectively move for a half cycle to the obstacle small-sized winch 2, pressing a start-stop button or an optional sensor to stop induction, and taking down the multi-strand high-molecular polyethylene rope 7 connected with the replaced netting 8 in a penetrating manner from the top pulley device 3 to be hung on the small-sized winch 2;
s5, opening a guide rail seal 11 of a bottom guide rail 9 on the bottom frame 13, sliding the micro pulley 10 away from the guide rail, installing the guide rail seal 11, starting the small-sized winch 2 to lift the netting 8 away from the water surface, and simultaneously completing the installation and the disassembly of the netting 8.
When the autonomous pushing device 6 pushes the top pulley device 3 to move to the body of the small-sized winch 2, the autonomous pushing device 6 can be braked by a manual control switch, and the start and stop of the autonomous pushing device can be controlled by an optional sensor.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An automatically foldable netting system comprises a rail device, a net cage floating frame (1), two independent pushing devices (6), two netting pieces (8), two small winches (2), a plurality of top pulley devices (3), a plurality of micro pulleys (10) and a plurality of high polymer polyethylene ropes (7); the method is characterized in that: a plurality of top pulley gear (3) and a plurality of miniature pulley (10) slidable mounting respectively are on rail set, rail set installs on box with a net floating frame (1), every top pulley gear (3) all are connected through macromolecular polyethylene rope (7) with the miniature pulley (10) that correspond of bottom, stranded macromolecular polyethylene rope (7) are used for wearing two etting (8) of even, two autonomic thrust unit (6) equal slidable mounting are on rail set, and two autonomic thrust unit (6) promote top pulley gear (3) and remove, two small-size hoist engine (2) symmetry are installed on box with a net floating frame (1), and two small-size hoist engine (2) are used for two etting (8) of going up and down.
2. An automatically collapsible netting system according to claim 1, characterized in that: the track device comprises a top pulley track (4) and a bottom guide rail (9), wherein the top pulley track (4) is lapped on a cantilever structure of a plurality of integrated connecting pieces (12), the bottom guide rail (9) is installed on a bottom frame (13) of the net cage floating frame (1), the bottom guide rail (9) is composed of two semicircular guide rails, and a circular guide rail is formed by detachably connecting guide rails through guide rail seals (11).
3. An automatically collapsible netting system according to claim 2, characterized in that: two holes formed in the bottom of each integrated connecting piece (12) are respectively penetrated by an inner floating pipe and an outer floating pipe of the net cage floating frame (1), and a top cantilever part of each integrated connecting piece (12) is used for arranging a top pulley track (4).
4. An automatically collapsible netting system according to claim 2, characterized in that: the micro pulleys (10) are arranged in the bottom guide rail (9) and play a role in fixing the netting and keeping the shape of the netting (8).
5. An automatically collapsible netting system according to claim 4, characterized in that: the utility model discloses a take-up device, including bottom guide rail (9), be equipped with the cavity that is used for placing miniature pulley (10) in bottom guide rail (9), miniature pulley (10) are installed at the epaxial gyro wheel of gyro wheel by the gyro wheel axle with rotating and are constituteed, the winding of polymer polyethylene rope (7) lower extreme is on the gyro wheel axle, and bottom guide rail (9) upper surface is seted up and is made polymer polyethylene rope (7) wear out the annular through-hole one of bottom guide rail (9).
6. An automatically collapsible netting system according to claim 2, characterized in that: top pulley track (4) are annular U groove structure, every top pulley track (4) all adopt four-wheel vehicle body structure to place a plurality of top pulley device (3) in the notch of top pulley track (4), can be through round pin axle with top pulley device (3) locking on top pulley track (4), polymer polyethylene rope (7) upper end and four-wheel vehicle body structure's connected to frame, annular through-hole two has been seted up to top pulley track (4) bottom and has been used for wearing out polymer polyethylene rope (7).
7. An operation method using the automatically foldable netting system of any one of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, preparing two pieces of netting (8) to be replaced, and respectively hoisting the netting to an underwater preset position by using two small winches (2);
s2, a diver manually opens a bottom guide rail seal (11) underwater, sequentially installs a plurality of micro pulleys (10) to a bottom guide rail (9), and closes the bottom guide rail seal (11) to prevent the micro pulleys (10) from derailing;
s3, after the replacement and the netting (8) to be replaced are connected with the top pulley device (3) in a penetrating mode through the multi-strand high polymer polyethylene ropes (7), respectively connecting one ends, located on the water surface, of the multi-strand high polymer polyethylene ropes (7) to the top pulley device (3), then unlocking the top pulley device (3) in the locked state, and starting the autonomous pushing device (6);
s4, when the two independent pushing devices (6) respectively move for a half cycle to the obstacle small-sized winch (2), pressing a start-stop button or selectively installing an inductor to stop the operation in an induction manner, and taking down the multi-strand high-molecular polyethylene rope (7) connected with the replaced netting (8) in a penetrating manner from the top pulley device (3) and hanging the rope on the small-sized winch (2);
s5, opening a guide rail seal (11) of a bottom guide rail (9) on the bottom frame (13), sliding the micro pulley (10) away from the guide rail, installing the guide rail seal (11), starting the small winch (2) to lift the netting (8) away from the water surface, and simultaneously completing the installation and the disassembly of the netting (8).
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CN202011212467.4A CN112314492B (en) | 2020-11-03 | 2020-11-03 | Automatic folding netting system and operation method |
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CN202011212467.4A CN112314492B (en) | 2020-11-03 | 2020-11-03 | Automatic folding netting system and operation method |
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CN112314492B true CN112314492B (en) | 2021-05-04 |
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CN115119795B (en) * | 2022-07-27 | 2023-06-27 | 广东广深农业科技发展有限公司 | Crayfish culture system and culture method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001065925A1 (en) * | 2000-03-08 | 2001-09-13 | Refa As | Device for raising and lowering of net pen |
EP2151163A1 (en) * | 2008-08-05 | 2010-02-10 | Island Marine Systems Limited | Track, tractor system and safety device |
CN101878742A (en) * | 2010-06-30 | 2010-11-10 | 中国水产科学研究院渔业机械仪器研究所 | Automatic lifting device of cage netting |
CN104798703A (en) * | 2015-04-07 | 2015-07-29 | 江苏科技大学 | Equipment and method for cleaning current-resistance submerged cage netting |
CN105848476A (en) * | 2013-12-23 | 2016-08-10 | 海洋养殖公司 | A semisubmersible, cylindrical net cage, closable bulkheads for a net cage and a bottom for the net cage that can be elevated |
CN206776487U (en) * | 2017-05-24 | 2017-12-22 | 中国海洋大学 | Portable cage netting hauling device |
-
2020
- 2020-11-03 CN CN202011212467.4A patent/CN112314492B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001065925A1 (en) * | 2000-03-08 | 2001-09-13 | Refa As | Device for raising and lowering of net pen |
EP2151163A1 (en) * | 2008-08-05 | 2010-02-10 | Island Marine Systems Limited | Track, tractor system and safety device |
CN101878742A (en) * | 2010-06-30 | 2010-11-10 | 中国水产科学研究院渔业机械仪器研究所 | Automatic lifting device of cage netting |
CN105848476A (en) * | 2013-12-23 | 2016-08-10 | 海洋养殖公司 | A semisubmersible, cylindrical net cage, closable bulkheads for a net cage and a bottom for the net cage that can be elevated |
CN104798703A (en) * | 2015-04-07 | 2015-07-29 | 江苏科技大学 | Equipment and method for cleaning current-resistance submerged cage netting |
CN206776487U (en) * | 2017-05-24 | 2017-12-22 | 中国海洋大学 | Portable cage netting hauling device |
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