Adjustable water depth net cage realizes time-sharing fish harvesting semi-submersible culture work ship

Abstract

The application discloses a semi-submersible breeding work ship with adjustable water depth net cages and realizing time-sharing fish collection, and relates to the field of breeding ships. The semi-submersible breeding work ship comprises a mounting frame fixedly mounted on a ship body, breeding net cages slidably arranged in layers in the mounting frame, wherein the single-layer breeding net cages are provided with separate pull ropes, the top of the mounting frame is further provided with a connecting roller for replacing and fixing the pull ropes to wind the pull ropes, a driving rope is wound around the connecting roller, the driving rope is connected to a pulley assembly, and the top of the mounting frame is further provided with a driving device for driving the pulley assembly to pull the driving rope. The breeding net cages are arranged in layers, the breeding net cages can be lifted and fished layer by layer according to needs, and the mutual friction between high clusters of fish is avoided during traditional fishing of the breeding net cages, so that the body damage is avoided.

Description

Technical Field

[0001] This invention relates to a semi-submersible aquaculture vessel with adjustable water depth net cages for timed fish harvesting, specifically relating to the field of aquaculture vessels. Background Technology

[0002] Currently, marine aquaculture is mainly large-scale, cubic-body farming, often employing a "nearshore hatching and seedling cultivation - deep-sea acclimatization - seawater cultivation" model. The net cages used for aquaculture still utilize an integral structure, with floating aquaculture vessels and net cages rising and falling as a whole. Due to the depth of the net cages, when the farmed fish mature and need to be harvested, the entire vessel must be floated to lower the water depth of the net cages and allow the fish to gather before harvesting. This results in hundreds of tons of fish being harvested from a single net cage simultaneously. When the nets are hauled in slowly, the high-density friction between the fish causes damage, leading to poor quality and reduced profitability. Furthermore, existing semi-submersible deep-sea aquaculture vessels use integral net cages, making it impossible to grade or layer them for different fish species. Summary of the Invention

[0003] To address the problems existing in the background technology, this invention proposes a semi-submersible aquaculture vessel with adjustable water depth net cages for timed fish harvesting. The aquaculture cages are arranged in layers, and the net cages can be lifted and harvested layer by layer as needed, avoiding the friction and limb injuries caused by the highly concentrated fish groups during the harvesting of traditional aquaculture cages.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a semi-submersible aquaculture vessel with adjustable water depth net cages for timed fish harvesting, comprising an installation frame fixedly mounted on the hull, wherein aquaculture net cages are slidably installed in layers within the installation frame, each layer of the aquaculture net cage is provided with a separate pull rope, and the top of the installation frame is also provided with a connecting roller for replacing and fixing the pull ropes for winding and retrieving the lines, the connecting rollers being wound with a drive rope, the drive rope being connected to a pulley assembly, and the top of the installation frame is also provided with a drive device for driving the pulley assembly to pull the drive rope; furthermore, the aquaculture net cages installed within the installation frame include a lower net, a middle net, and an upper net, each of the lower, middle, and upper nets being provided with a limit ring, the limit ring being sleeved on a vertically arranged guide rod of the installation frame, allowing the aquaculture net cages to slide up and down; the lower, middle, and upper nets are respectively provided with a first pull rope, a second pull rope, and a third pull rope for connecting the connecting rollers, and the ends of each pull rope are provided with The system includes hooks that are fixed to the connecting rollers, allowing the connecting rollers to rotate and coil around the pull ropes, thus lifting the aquaculture cage. Further, two of each of the first, second, and third pull ropes are provided, diagonally positioned on the lower, middle, and upper layers of the netting, respectively. The connecting rollers are positioned diagonally opposite the pull ropes on the mounting frame. The pulley assembly includes a connecting block mounted above the mounting frame via a crossbeam. A fixed pulley corresponding to the pull rope is fixedly connected to the connecting block. A suspension frame is positioned above the fixed pulley, with diagonally opposite suspension frames connected by a ring-shaped component. A movable pulley and a roller are mounted on the suspension frame. The pulley assembly also includes a drive rope, one end of which is fixed to the fixed pulley bracket of the connecting block, and the other end sequentially passes over the roller, fixed pulley, and movable pulley, and is fixedly connected to the connecting roller, driving the connecting roller to rotate. Further, the connecting block also has an auxiliary pulley for the drive wheel to pass over. Finally, the driving device is a gantry crane or a winch.

[0005] The beneficial effects of this invention are as follows: By stratifying the aquaculture cages, this invention allows for the lifting of individual cages at different times according to the fish's growth stage during harvesting. This achieves single-cage lifting and harvesting, avoiding the friction between highly concentrated fish groups caused by traditional integrated cage harvesting. Furthermore, fish can be raised in different layers of cages based on their growth rate; faster-growing fish can be raised in upper cages, facilitating individual cage lifting and harvesting or lifting multiple cages together for harvesting. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of a semi-submersible aquaculture vessel that enables timed fish harvesting using an adjustable-depth net cage.

[0007] Figure 2A front view of a semi-submersible aquaculture vessel that allows for timed fish harvesting using adjustable-depth net cages.

[0008] Figure 3 for Figure 2 A magnified view of a portion of position A in the middle.

[0009] Figure 4 This is a side view of a semi-submersible aquaculture vessel that uses adjustable-depth net cages to harvest fish at different times.

[0010] Figure 5 A perspective view of the pulley assembly of a semi-submersible aquaculture vessel that enables timed fish harvesting using an adjustable-depth net cage.

[0011] Figure 6 A three-dimensional diagram of the aquaculture cages of a semi-submersible aquaculture vessel that enables timed fish harvesting using adjustable-depth net cages.

[0012] Figure 7 A schematic diagram of the connecting rollers of a semi-submersible aquaculture vessel that enables timed fish harvesting using an adjustable-depth net cage.

[0013] In the attached drawings, the labels represent: 100, hull; 1, mounting frame; 101, lower mesh; 1011, bottom frame; 1012, first tension rope; 102, middle mesh; 1021, middle frame; 1022, second tension rope; 103, upper mesh; 1031, top frame; 1032, third tension rope; 106, guide rod; 105, limiting ring; 107, conical part; 2. Gantry crane; 201, guide rail; 3, pulley assembly; 301, crossbeam; 302, connecting block; 303, auxiliary pulley; 304, fixed pulley; 305, roller; 306, movable pulley; 307, large ring; 308, small ring; 309, drive rope; 4, connecting roller; 401, first roller; 402, second roller; 4021, hanging nail; 5, suspension frame; 6, hook. Detailed Implementation

[0014] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0015] See Figures 1 to 7 This is a semi-submersible aquaculture vessel that allows for timed fish harvesting using adjustable-depth net cages, such as... Figure 1 The front end of the hull 100 shown is a triangular structure for drainage and flow guidance during forward movement. The rear end of the hull 100 is U-shaped to prevent water splashes from hitting the aquaculture net cages during forward movement, thus extending the lifespan of the net cages.

[0016] like Figures 1 to 4The semi-submersible aquaculture vessel shown also includes a mounting frame 1 fixedly installed on the hull 100. The mounting frame 1 has aquaculture net cages installed in layers that can slide. Specifically, the aquaculture net cages include a lower net 101, a middle net 102, and an upper net 103, which are respectively fastened by a bottom frame 1011, a middle frame 1021, and a top frame 1031. The lower net 101 has a downwardly extending conical part 107, which is used to expand the aquaculture space of the lower net 101. At the same time, it can also make the net cage better adapt to the complex topography and water flow environment of the deep seabed and reduce the sinking resistance of the net cage. The lower net 101, the middle net 102, and the upper net 103 are all equipped with limit rings 105. The limit rings 105 are sleeved on the vertically set guide rods 106 of the mounting frame 1, so that the aquaculture net cages can slide up and down along the guide rods 106 (that is, the lower net 101, the middle net 102, and the upper net 103 can slide up and down along the guide rods 106 individually).

[0017] like Figure 6 The single-layer aquaculture cage shown is equipped with a separate pull rope. The top of the mounting frame 1 is also equipped with a connecting roller 4 for replacing and fixing the pull rope during winding and reeling. The connecting roller 4 consists of a coaxial first roller 401 and a second roller 402. The first roller 401 of the connecting roller 4 has a drive rope 309 wound around it. The drive rope 309 is connected to the pulley assembly 3. The top of the mounting frame 1 is also equipped with a drive device for driving the pulley assembly 3 to pull the drive rope 309. The drive device is configured as a gantry crane 2 or a winch. In use, the hook of the gantry crane 2 hooks onto the pulley assembly 3, driving the pulley rope 309 to move. Figure 7 The drive rope 309 shown drives the connecting roller 4 to rotate, thereby driving the traction rope to lift the aquaculture net cage.

[0018] like Figure 6 The lower mesh 101, middle mesh 102 and upper mesh 103 in the mounting frame 1 shown are respectively provided with pull ropes for connecting the connecting roller 4, namely the first pull rope 1012, the second pull rope 1022 and the third pull rope 1032, and the ends of the pull ropes are all provided with hooks.

[0019] like Figure 7The hook shown is fixed to the second roller 402 of the connecting roller 4 by the pin 4021. The second roller 402 rotates coaxially with the first roller 401, causing the connecting roller 4 to rotate. The second roller 402 can coil around the pull rope to lift the aquaculture cage. When it is necessary to lift each cage individually, simply replace the first pull rope 1012, the second pull rope 1022, and the third pull rope 1032 in sequence to hook the connecting roller 4, driving the gantry crane 2 to lift the aquaculture cages one by one. According to the growth status of the farmed fish, the single-layer cage can be lifted at different times, thereby achieving single-cage lifting and harvesting. This avoids the friction between individuals in the highly dense fish schools caused by the traditional integrated harvesting of aquaculture cages, which leads to limb injuries and improves the quality of the harvested fish.

[0020] like Figure 6 and Figure 7 As shown, when multiple aquaculture cages need to be lifted, the first traction rope 1012 is simply attached to the connecting roller 4. The connecting roller 4 rotates, causing the first traction rope 1012 to move upwards. This upward movement first causes the bottom frame 1011 to move upwards, which in turn causes the lower net 101 to move upwards. Simultaneously, the lower net 101 wrinkles and contracts. When the bottom frame 1011 contacts the middle frame 1021, the bottom frame 1011 causes the middle frame 1021 to move upwards, further causing the middle frame 1021 to move upwards. The middle net 102 also wrinkles and contracts. Finally, the upper middle frame 1021, driven by the lower middle frame 1021, also moves upwards, further causing the upper net 103 to contract. This further restricts the volume of the space enclosed by the middle net 102, the lower net 101, the upper net 103, and the bottom net, thus reducing the area for aquaculture and facilitating harvesting.

[0021] like Figure 1 , 6 Two of each of the following three tension ropes are provided: the first tension rope 1012, the second tension rope 1022, and the third tension rope 1032. They are diagonally positioned on the lower layer net 101, the middle layer net 102, and the upper layer net 103, respectively. Connecting rollers are positioned diagonally opposite the tension ropes on the mounting frame 1, corresponding to the diagonally positioned first tension rope 1012, second tension rope 1022, and third tension rope 1032, facilitating the fixing of the tension ropes.

[0022] like Figure 5The pulley assembly 3 shown includes a connecting block 302 mounted above the mounting frame 1 through a cross beam 301. A fixed pulley 304 corresponding to the pulling rope is fixedly connected to the connecting block 302. A suspension bracket 5 is provided above the fixed pulley 304. The suspension bracket 5 and the fixed pulley 304 are also arranged diagonally opposite to the connecting roller 4 and the pulling rope. The suspension brackets 5 at the diagonals are connected by a ring-shaped component. The ring-shaped component is a small ring 308 and a large ring 307. The hook of the suspension bracket 5 at the top is the small ring 308. The two small rings 308 are connected by a large collar. During use, only need to hang the hook of the gantry crane 2 on the large ring 307 to drive the entire suspension bracket 5 to move upward, thereby driving the entire pulley assembly 3 to move and driving the driving rope 309 to move.

[0023] As Figure 5 As shown, a movable pulley 306 and a roller 305 are provided on the suspension bracket 5. The pulley assembly 3 further includes a driving rope 309. One end of the driving rope 309 is fixed on the bracket of the fixed pulley 304 of the connecting block 302, and the other end sequentially bypasses the roller 305, the fixed pulley 304, and the movable pulley 306 and is fixedly connected to the connecting roller 4 to drive the connecting roller to rotate. With this structural arrangement, the principle of the reverse movable pulley 306 being laborious but saving distance is utilized, so that the height of the gantry crane 2 can be reduced to half of the height of the net cage. The fixed pulley 304 remains stationary, and the movable pulley 306 moves upward to drive the pulling rope to wind up. The pulley assembly 3 serves as an intermediate transmission component. The gantry crane 2 achieves the lifting movement of the aquaculture net cage with a longer suspension stroke through the pulley assembly 3 with a shorter suspension stroke.

[0024] As Figure 5 As shown, an auxiliary pulley 303 for allowing the driving wheel to bypass is further provided on the connecting block 302 to enable the driving rope 309 to run more smoothly.

[0025] In some embodiments, the pulley assembly 3 can be changed to a winch. Winches are respectively installed near the corner positions on the inner side of the rectangular structure of the "day" - shaped structure on the mounting frame 1. A driving rope 309 is installed on the winch. The driving rope 309 is connected to the connecting rollers 4 at the four corners. The winches are arranged on the diagonal sides, and the total number of winches is four. The winches on the same side are two winding rollers driven by a single two - shaft reduction motor to wind synchronously, thereby reducing the number of winch motors and improving the synchronization. Thus, the net cage lifting work can be achieved by using the winches.

[0026] In some preferred embodiments, two sets of pulley assemblies 3 are modified to four sets of pulley assemblies 3, and collars are added to connect the top hooks of the four sets of pulley mechanisms, thereby achieving the net cage lifting work and improving the stability of the net cage lifting.

[0027] Refer to Figure 1 、 2The number of the aquaculture cages is two, and the lifting of the two cages does not interfere with each other. Moreover, a guide rail 201 is provided on the installation frame 1 with a "day" - shaped structure. The gantry crane 2 moves back and forth between the two aquaculture cages through the guide rail 201 to hook its hook on the large ring 307 for lifting.

[0028] In some preferred embodiments, the device can be extended to have only the upper layer net 103 and the lower layer net 101, and the installation frame 1 can be composed of multiple "day" - shaped structures spliced together, not limited to only one "day" - shaped structure. The number of cages can also be extended to multiple accordingly.

[0029] When the aquaculture cage with this structure is in the fish - farming state, the guide rod 106 and the limit ring 105 can limit the position of the cage to prevent the cage from fluctuating. The device also has limit ropes (not shown in the figure) at each corner of the installation frame 1. The side walls of each layer of aquaculture cages are tied to the installation frame 1 through the limit ropes to prevent the upper and lower fluctuations and mutual entanglement between each layer of cages. When the cage is in the fish - harvesting state, when the bottom frame 1011 rises, the limit ropes will be untied in sequence to prevent the limit ropes from getting stuck on the installation frame 1 and hindering the folding of the cage.

[0030] Finally, it should be noted that the above - mentioned preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above - mentioned preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A semi-submersible farming vessel for adjustable depth net pens to achieve time-sharing fish harvesting, characterized in that: The application discloses a semi-submersible culture work ship, which comprises a mounting frame (1) fixedly arranged on a ship body (100), culture net cages slidably arranged in the mounting frame (1), and a single pulling rope arranged on the culture net cages. The culture net cages arranged in the mounting frame (1) comprise a lower net (101), a middle net (102) and an upper net (103), the lower net (101), the middle net (102) and the upper net (103) are all provided with a limiting ring (105), the limiting ring (105) is sleeved on a vertically arranged guide rod (106) of the mounting frame (1), so that the culture net cages can slide up and down, the lower net (101), the middle net (102) and the upper net (103) are respectively provided with a first pulling rope (1012), a second pulling rope (1022) and a third pulling rope (1032) for connecting the connecting roller (4), the end of the pulling rope is provided with a hook, the hook is fixed on a hook nail (4021) of the connecting roller (4), so that the connecting roller (4) can rotate to wind the pulling rope and lift the culture net cages, the first pulling rope (1012), the second pulling rope (1022) and the third pulling rope (1032) are arranged in two pairs and arranged at opposite angles of the lower net (101), the middle net (102) and the upper net (103), and the connecting roller is arranged at opposite angles of the mounting frame (1). The pulley assembly (3) comprises a connecting block (302) arranged above the mounting frame (1) through a cross beam (301), the connecting block (302) is fixedly connected with a fixed pulley (304) corresponding to the pulling rope, a suspension frame (5) is arranged above the fixed pulley (304), the opposite suspension frames (5) are connected through a ring-shaped part, the suspension frame (5) is provided with a movable pulley (306) and a roller (305), the pulley assembly (3) further comprises a driving rope (309), one end of the driving rope (309) is fixed on a support of the fixed pulley (304) of the connecting block (302), the other end of the driving rope (309) is sequentially wound around the roller (305), the fixed pulley (304) and the movable pulley (306) and fixedly connected to the connecting roller (4), so as to drive the connecting roller (4) to rotate.

2. Semi-submersible farming vessel according to claim 1, characterized in that: The connecting block (302) is further provided with an auxiliary pulley (303) for winding the driving wheel.

3. A semi-submersible farming vessel according to any one of claims 1 or 2, characterized in that: The driving device is a gantry crane (2) or a winch.

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