A base plate tensioned cage and its fishing method

Abstract

A base-plate tensioned cage and its fishing method. The cage includes a mooring system and a net bag system. The net bag system is arranged in the middle of the mooring system and is connected and positioned by cables. The mooring system includes a buoy mooring frame and a suction anchor mooring frame. The suction anchor mooring frame is connected to the buoy mooring frame by a mooring anchor chain to form an integrated structure. Buoys are installed at the edges of the buoy mooring frame, and suction anchors are correspondingly installed at the edges of the suction anchor mooring frame. A column is provided in the middle of the buoy. The bottom of the column is connected to the suction anchor by a mooring anchor chain. The buoy can slide up and down along the column and is positioned by a fixed bolt. The cage structure connects the mutually independent mooring system and net bag system by cables. Buoys are provided on the upper part of the mooring system to provide buoyancy, and suction anchors are provided on the lower part of the mooring system to form overall positioning. The net bag system is arranged at the center of the mooring system. The overall structure is stable, the anti-wave and anti-wind ability is stronger, and the split design makes it more convenient to replace the netting.

Description

Technical Field

[0001] The present invention relates to a base plate tensioned cage and a fishing method thereof. Background Art

[0002] With the decline of traditional marine fishery resources and the aging of traditional fishing grounds, cage aquaculture has increasingly become the development focus of coastal countries around the world. Deep-sea cage aquaculture is of great significance for expanding aquaculture areas, reducing environmental pressure, and protecting and regulating the structure of marine aquaculture varieties. Even under very harsh sea conditions, it can keep the cage structure system and the fish cultured therein safe and sound. Most of the existing deep-sea cages are of an integral structure, including a frame system, a netting, a buoy mechanism, and an anchoring mechanism. Due to the large volume of the cage, it is basically a fixed structure, and operations such as fishing or replacing the netting need to be carried out deep underwater, greatly increasing the maintenance cost. Summary of the Invention

[0003] In view of the deficiencies in the above problems, the present invention provides a base plate tensioned cage.

[0004] To achieve the above object, the present invention provides a base plate tensioned cage, including a mooring system and a net bag system. The net bag system is arranged in the middle of the mooring system and is connected and positioned by cables. The mooring system includes a buoy mooring frame and a suction anchor mooring frame. The suction anchor mooring frame is arranged below the buoy mooring frame. The suction anchor mooring frame is connected to the buoy mooring frame through a mooring anchor chain to form an integral structure. Buoys are installed at the edges of the buoy mooring frame, and suction anchors corresponding to the buoys are installed at the edges of the suction anchor mooring frame.

[0005] A column is provided in the middle of the buoy. A buoy ballast tank is provided at the lower part of the buoy. The column passes through the buoy and is connected to the suction anchor at the bottom through the mooring anchor chain. The buoy can slide up and down along the column and is positioned by a fixed pin.

[0006] As a further improvement of the present invention, the suction anchor mooring frame is formed by enclosing four side beams to form a square structure. Diagonal braces are provided between adjacent side beams. The suction anchor is installed at the connection of the side beams. The structure of the buoy mooring frame is the same as that of the suction anchor mooring frame.

[0007] As a further improvement of the present invention, the net bag system includes a suspension buoyancy frame floating on the sea surface, a planar frame provided below the suspension buoyancy frame, and a vertical gravity frame provided below the planar frame. The suspension buoyancy frame, the planar frame, and the vertical gravity frame form an integral structure through a netting. The netting includes a neck net provided between the suspension buoyancy frame and the planar frame, a belly net provided between the planar frame and the vertical gravity frame, and a bottom net provided on the vertical gravity frame. A counterweight block is provided below the vertical gravity frame, and the counterweight block is connected to the vertical gravity frame through a counterweight rope. The overall top view of the net bag system is octagonal in shape.

[0008] As a further improvement of the present invention, the cable includes an upper cable and a lower cable. The two ends of the upper cable are respectively connected to the buoy mooring frame and the planar frame, and the two ends of the lower cable are respectively connected to the suction anchor mooring frame and the vertical gravity frame.

[0009] As a further improvement of the present invention, the upper part of the column extends out of the sea surface and is equipped with a width indicating lamp.

[0010] As a further improvement of the present invention, the lower part of the suction anchor extends into the seabed.

[0011] The present invention also provides a fishing method for a base plate tensioned cage, including the following steps:

[0012] First, disconnect the lower cable between the suction anchor mooring frame and the vertical gravity frame, remove the fixed pin at the connection between the buoy and the column, and the buoy moves up along the column. The buoy mooring frame integrally connected to the buoy drives the entire net bag system to float until the planar frame in the net bag system floats to the water surface.

[0013] Second, remove the entire neck net together with the suspension buoyancy frame, connect the lower end of the rope to the center position of the bottom net on the vertical gravity frame, and connect the upper end of the rope to the crane. While the crane hoists the center of the bottom net, check the fish density on the water surface and use a fish suction pump for fishing to avoid oxygen deficiency caused by excessive fish density until the vertical gravity frame rises and floats to the water surface and is level with the planar frame, and at the same time, the fishing is completed.

[0014] As a further improvement of the present invention, in step two, after the fishing is completed, then disconnect the upper cable between the buoy mooring frame and the planar frame, tie the planar frame and the vertical gravity frame together and hoist them onto the ship as a whole to replace the netting.

[0015] The beneficial effects of the present invention are:

[0016] 1. The cage structure connects the mutually independent mooring system and the net bag system through cables. Buoys are provided on the buoy mooring frame at the upper part of the mooring system to provide buoyancy. After a suction anchor is set on the suction anchor mooring frame at the lower part of the mooring system, a stable base plate is formed. The net bag system is arranged at the center of the mooring system. Together with the counterweight structure at the lower part of the net bag system, the whole cage forms a dual positioning, with a stable structure and stronger resistance to wind and waves.

[0017] 2. The buoys and columns on the buoy mooring frame are designed as liftable structures. The buoys slide up and down along the columns and are positioned by fixed pins. The buoy mooring frame is connected to the plane frame at the upper part of the net bag system through the upper cable, and the suction anchor mooring frame is connected to the vertical pulling gravity frame at the lower part of the net bag system through the lower cable. After the lower cable is untied, the buoy mooring frame can drive the whole net bag system to float upward, which is convenient for fishing.

[0018] 3. The split design of the net bag system and the mooring system makes it more convenient to replace the netting in the net bag system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of a base plate tensioned cage of the present invention;

[0020] Figure 2 is the top view of a base plate tensioned cage of the present invention;

[0021] Figure 3 is the bottom view of a base plate tensioned cage of the present invention;

[0022] Figure 4 is the front view of the mooring system 1;

[0023] Figure 5 is the structural schematic diagram of the suction anchor mooring frame 17;

[0024] Figure 6 is the front view of the net bag system 2;

[0025] Figure 7 is the top view of the net bag system 2.

[0026] In the figures: 1. Mooring system; 11. Width indicating lamp; 12. Column; 13. Buoy mooring frame; 14. Buoy; 15. Buoy ballast tank; 16. Mooring anchor chain; 17. Suction anchor mooring frame; 171. Side beam; 172. Angular diagonal brace beam; 18. Suction anchor; 19. Fixed pin; 2. Net bag system; 21. Suspended buoyancy frame; 22. Plane frame; 23. Netting; 231. Neck net; 232. Belly net; 233. Bottom net; 24. Vertical pulling gravity frame; 25. Counterweight rope; 26. Counterweight block; 3. Upper cable; 4. Lower cable. DETAILED DESCRIPTION OF THE INVENTION

[0027] As Figure 1 shown, a kind of base plate tensioned cage of the present invention includes a mooring system 1 and a net bag system 2. The net bag system 2 is arranged in the middle of the mooring system 1 and is connected and positioned through cables. The mooring system 1 includes a buoy mooring frame 13 and a suction anchor mooring frame 17. The suction anchor mooring frame 17 is arranged below the buoy mooring frame 13. The suction anchor mooring frame 17 is connected to the buoy mooring frame 13 through a mooring anchor chain 16 to form an integral structure. Buoys 14 are installed at the edges of the buoy mooring frame 13, and suction anchors 18 are installed at the edges of the suction anchor mooring frame 17 corresponding to the buoys 14 (see Figure 4 ). The lower part of the suction anchor 18 extends into the seabed. The suction anchor mooring frame 17 is formed by enclosing four side beams 171 to form a square structure. Angle diagonal braces 172 are arranged between adjacent side beams 171. The suction anchor 18 is installed at the connection of the side beams 171 (see Figure 5 ). The structure of the buoy mooring frame 13 is the same as that of the suction anchor mooring frame 17;

[0028] A column 12 is arranged in the middle of the buoy 14, and a buoy ballast tank 15 is arranged below the buoy 14. The bottom of the column 12 passes through the buoy 14 and is connected to the suction anchor 18 through a mooring anchor chain 16. The buoy 14 can slide up and down along the column 12 and is positioned by a fixed pin 19. The upper part of the column 12 extends out of the sea surface and a width indicating lamp 11 is installed;

[0029] The net bag system 2 includes a suspension buoyancy frame 21 floating on the sea surface, a plane frame 22 arranged below the suspension buoyancy frame 21, and a vertical tension gravity frame 24 arranged below the plane frame 22. The suspension buoyancy frame 21, the plane frame 22, and the vertical tension gravity frame 24 form an integral structure through a netting 23. The netting 23 includes a neck net 231 arranged between the suspension buoyancy frame 21 and the plane frame 22, a belly net 232 arranged between the plane frame 22 and the vertical tension gravity frame 24, and a bottom net 233 arranged on the vertical tension gravity frame 24. A counterweight 26 is arranged below the vertical tension gravity frame 24. The counterweight 26 is connected to the vertical tension gravity frame 24 through a counterweight rope 25. The overall top view of the net bag system 2 is octagonal (see Figure 6 , Figure 7 ). The cables include an upper cable 3 and a lower cable 4. Both ends of the upper cable 3 are respectively connected to the buoy mooring frame 13 and the plane frame 22. Both ends of the lower cable 4 are respectively connected to the suction anchor mooring frame 17 and the vertical tension gravity frame 24 (see Figure 2 , Figure 3 ).

[0030] This cage structure connects the mutually independent mooring system and the net bag system through cables. Buoys are provided on the buoy mooring frame at the upper part of the mooring system to provide buoyancy. After a suction anchor is set on the suction anchor mooring frame at the lower part of the mooring system, a stable base plate is formed. The net bag system is arranged at the center of the mooring system. Together with the weight structure at the lower part of the net bag system, the whole cage forms a dual positioning, with a stable structure and stronger resistance to wind and waves. The buoys and columns on the buoy mooring frame are designed as a lifting structure. The buoys slide up and down along the columns and are positioned by fixed pins. The buoy mooring frame is connected to the plane frame at the upper part of the net bag system through the upper cable, and the suction anchor mooring frame is connected to the vertical pulling gravity frame at the lower part of the net bag system through the lower cable. After the lower cable is untied, the buoy mooring frame can drive the whole net bag system to float upward, facilitating fishing. The split design of the net bag system and the mooring system makes it more convenient to replace the netting in the net bag system.

[0031] When in specific use, for the convenience of understanding the present invention, it is described in combination with the accompanying drawings;

[0032] The cage structure is divided into a mooring system and a net bag system. The mooring system surrounds the whole net bag system and forms an overall positioning. Buoys are provided on the buoy mooring frame at the upper part of the mooring system to provide buoyancy, and the buoyancy of the buoys can be adjusted through the buoy ballast tank. A suction anchor is provided on the suction anchor mooring frame at the lower part of the mooring system to provide a downward traction force. The suction anchor and the buoy jointly maintain the overall stability of the mooring system, and the lower part of the suction anchor extends into the seabed for fixation. The net bag system is arranged at the center of the mooring system. The suspension buoyancy frame at the top of the net bag system has a large buoyancy. The plane frame at the upper part of the net bag system is connected to the buoy mooring frame through the upper cable, and the vertical pulling gravity frame at the lower part of the net bag system is connected to the suction anchor mooring frame through the lower cable. A counterweight block is also provided at the bottom of the net bag system. Under the combined action of the suspension buoyancy frame, the plane frame, the vertical bottom gravity plate and the counterweight block, the netting is fully unfolded. Compared with the integral structure of the traditional cage, in this design, the mooring system and the net bag system are separated to form the combination of two positioning systems, with better overall stability and novel structure.

[0033] When fishing, the lower cable between the vertical pulling gravity frame and the suction anchor mooring frame can be untied, the buoyancy of the buoy is adjusted, and the buoy mooring frame drives the whole net bag system to float upward. The buoy slides upward along the column and is positioned by using a fixed pin. After the net bag system floats upward, fishing operations can be carried out.

[0034] The fishing method of a base plate tensioned cage according to the present invention includes the following steps:

[0035] First, release the lower cable 4 between the suction anchor mooring frame 17 and the vertical pull gravity frame 24, remove the fixed pin 19 at the connection between the buoy 14 and the column 12, and let the buoy 14 move upward along the column 12. The buoy mooring frame 13 integrally connected to the buoy 14 drives the net bag system 2 to float upward as a whole until the flat frame 22 in the net bag system 2 floats to the water surface.

[0036] Second, remove the neck net 231 and the hanging buoyancy frame 21 as a whole. Connect the lower end of the rope to the center position of the bottom net 233 on the vertical pull gravity frame 24, and connect the upper end of the rope to the crane. While the crane is lifting the center of the bottom net 233, check the fish density on the water surface and use the fish suction pump for fishing to avoid oxygen deficiency caused by excessive fish density until the vertical pull gravity frame 24 rises and floats to the water surface and is level with the flat frame 22, and at the same time the fishing is completed.

[0037] In step two, after the fishing is completed, then release the upper cable 3 between the buoy mooring frame 13 and the flat frame 22, tie the flat frame 22 and the vertical pull gravity frame 24 together and lift them onto the ship as a whole to replace the netting.

[0038] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fishing method for a base-tensioned cage, characterized in that, The following steps are included in sequence: The base plate tensioned net cage comprises a mooring system (1) and a net bag system (2), wherein the net bag system (2) is arranged in the middle of the mooring system (1) and is connected and positioned by cables, and the mooring system (1) comprises a buoy mooring frame (13) and a suction anchor mooring frame (17), wherein the suction anchor mooring frame (17) is arranged below the buoy mooring frame (13), and the suction anchor mooring frame (17) is connected to the buoy mooring frame (13) by a mooring anchor chain (16) to form an integrated structure, a buoy (14) is installed at the edge of the buoy mooring frame (13), and a suction anchor (18) corresponding to the buoy (14) is installed at the edge of the suction anchor mooring frame (17); A column (12) is provided in the middle of the buoy (14), and a buoy ballast tank (15) is provided at the bottom of the buoy (14). After the column (12) passes through the buoy (14), the bottom is connected to the suction anchor (18) through the mooring anchor chain (16). The buoy (14) can slide up and down along the column (12) and be positioned by a fixing pin (19). The net bag system (2) comprises a suspended buoyancy frame (21) floating on the sea surface, a plane frame (22) arranged below the suspended buoyancy frame (21), and a vertical gravity frame (24) arranged below the plane frame (22). The suspended buoyancy frame (21), the plane frame (22), and the vertical gravity frame (24) form an integral structure through a net (23). The net (23) comprises a net arranged on the A neck net (231) between the suspended buoyancy frame (21) and the plane frame (22), a belly net (232) provided between the plane frame (22) and the vertical gravity frame (24), and a bottom net (233) provided on the vertical gravity frame (24); a counterweight block (26) is provided below the vertical gravity frame (24); the counterweight block (26) is connected to the vertical gravity frame (24) via a counterweight rope (25); the net bag system (2) is in an octagonal shape when viewed from above; the cable comprises an upper cable (3) and a lower cable (4); the two ends of the upper cable (3) are respectively connected to the buoy mooring frame (13) and the plane frame (22); the two ends of the lower cable (4) are respectively connected to the suction anchor mooring frame (17) and the vertical gravity frame (24); Step 1: Release the lower cable (4) between the suction anchor mooring frame (17) and the vertical gravity frame (24), remove the fixing pin (19) at the connection between the buoy (14) and the column (12), move the buoy (14) upward along the column (12), and the buoy mooring frame (13) integrally connected to the buoy (14) drives the net bag system (2) to float upward as a whole until the plane frame (22) in the net bag system (2) floats to the water surface; Step 2: Remove the neck net (231) together with the suspended buoyancy frame (21) as a whole. Connect the lower end of the rope to the center position of the bottom net (233) on the vertically pulled gravity frame (24), and connect the upper end of the rope to the crane. While the crane is pulling the center of the bottom net (233), check the density of the fish in the water surface and use the fish suction pump for fishing to avoid oxygen deficiency caused by excessive fish density until the vertically pulled gravity frame (24) rises to the water surface and is level with the plane frame (22), and at the same time, the fishing is completed; In the above Step 2, after the fishing is completed, then release the upper cable (3) between the buoy mooring frame (13) and the plane frame (22), tie the plane frame (22) and the vertically pulled gravity frame (24) together and then lift them onto the ship as a whole to replace the netting.

2. The fishing method of a base plate tensioned cage according to claim 1, characterized in that: The suction anchor mooring frame (17) is formed by enclosing four side beams (171) to form a square structure. Angle diagonal braces (172) are provided between adjacent side beams (171). The suction anchor (18) is installed at the connection of the side beams (171). The structure of the buoy mooring frame (13) is the same as that of the suction anchor mooring frame (17).

3. The fishing method of a base plate tensioned cage according to claim 1, characterized in that: The upper part of the upright column (12) extends out of the sea surface and is equipped with a width indicating lamp (11).

4. The fishing method of a base plate tensioned cage according to claim 1, characterized in that: The lower part of the suction anchor (18) extends into the seabed.

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