A device for collecting eggs from needleless cuttlefish (Sepia spp.)

Abstract

This invention discloses a device for collecting eggs attached to the needleless squid (Sepia spp.), aiming to effectively solve the problem of squid eggs attached to the egg-laying ropes being detached and lost during the retrieval of the egg-laying ropes when the device is being retrieved, without affecting the egg-laying of the needleless squid on the egg-laying ropes. It includes: a base with a vertical guide rod on it, and a limiting block at the upper end of the vertical guide rod; a collection frame located above the base, including a top plate and a base frame, the base frame being able to slide up and down along the vertical guide rod, the limiting block being located above the base frame, and several attachment ropes between the top plate and the base frame; and several baffles sequentially distributed around the base frame, the baffles being hinged to the edges of the base frame, and the lower edges of the baffles having extension rods extending downwards to the bottom of the base frame, with rollers at the lower ends of the extension rods.

Description

Technical Field

[0001] This invention relates to the field of research technology of Cuttlefish mansoni, specifically to a device for collecting attached eggs of Cuttlefish mansoni. Background Technology

[0002] The spawning habitat of the Japanese squid is very narrow, and it has high requirements for its substrate. In natural marine areas, the main substrates for spawning of the Japanese squid are corals, large seaweeds, and artificial waste. However, with the destruction of the marine environment, the resources of spawning substrates, mainly corals, in natural marine areas have been severely damaged, and the area of ​​traditional spawning grounds has decreased sharply. Therefore, the introduction of artificial spawning substrates has been widely used as a supplementary means in the process of resource enhancement of the Japanese squid.

[0003] Currently, artificially placed spawning sites for squid typically employ a combination of attachment frames and spawning ropes. To investigate the actual spawning behavior of *Sepia mansoni* on these artificially placed spawning sites, spawning sites are artificially placed within a designated sea area for a specific time period. After the set time, the spawning sites are retrieved to observe and study the actual spawning behavior of *Sepia mansoni* on these artificially placed spawning sites.

[0004] Because squid prefer to lay their eggs on attachments close to the seabed (usually on egg-laying ropes within 60 centimeters of the seabed), bottom-dwelling squid egg-laying attachments are generally used. Therefore, when retrieving squid egg-laying attachments, it is necessary to lift the attachments with ropes. During this process, the squid eggs attached to the egg-laying ropes will be impacted by the seawater, causing the squid eggs to fall off and be lost, thus affecting the accuracy of research on the actual situation of squid laying eggs on artificially created egg-laying attachments. Summary of the Invention

[0005] The purpose of this invention is to provide a *Sepia spp.* egg collection device that effectively solves the problem that the squid eggs attached to the egg collection rope are affected by seawater impact during the retrieval of the egg collection device without affecting the egg-laying of *Sepia spp.* on the egg collection device.

[0006] The technical solution of this invention is:

[0007] A device for collecting eggs attached to the needleless cuttlefish (Sepia spp.) includes:

[0008] A base with a vertical guide rod on it, and a limiting block at the upper end of the vertical guide rod;

[0009] The collection frame located above the base includes a top plate and a bottom frame. The bottom frame can slide up and down along the vertical guide rod. The limiting block is located above the bottom frame. Several attachment ropes are provided between the top plate and the bottom frame.

[0010] Several baffles are arranged sequentially around the base frame. The baffles are hinged to the edge of the base frame. The lower edge of the baffle is provided with an extension rod that extends downward to the bottom of the base frame. The lower end of the extension rod is provided with a roller.

[0011] When the base frame moves upward and abuts against the limit block, the baffle rotates upward and abuts against the edge of the top plate under the action of buoyancy or elastic element.

[0012] When the base frame is supported on the pedestal, the rollers abut against the pedestal, and the baffle rotates downwards and separates from the top plate. The specific use of one type of *Sepia mansoni* egg collection device according to this scheme is as follows.

[0013] A device for collecting eggs from the needleless squid (Sepia spp.) is lowered to the seabed via a rope connected to a top plate. Supported by a base, the rope is then released, its upper end floating on the surface for easy retrieval. Once the base is on the seabed and the rope is released, the collection frame descends under its own weight until the base supports it. During this process, rollers press against the base, driving the baffles to rotate downwards. When the base supports the base, the rollers press against it, and the baffles rotate downwards and separate from the top plate. At this point, the baffles are open, providing sufficient space between them and between them and the top plate for the needleless squid to enter the collection frame and lay their eggs on the egg-attaching rope.

[0014] When retrieving the spawn collection device for the Japanese squid, the device is lifted upwards using ropes. First, the ropes lift the collection frame along the vertical guide rod until the base rests against the limiting block. As the base moves upwards and rests against the limiting block, the baffles rotate upwards under the action of buoyancy or elastic elements and press against the edge of the top plate. This baffles then cover the space between the top plate and the base, protecting the spawning rope and the squid eggs on it within the space enclosed by the top plate, base, and baffles. Next, the ropes lift the collection frame and base together until the entire spawn collection device is lifted. This effectively prevents seawater from impacting the squid eggs during retrieval, thus avoiding the problem of squid eggs falling off and being lost. Therefore, this solution provides a method for collecting eggs from the needleless squid of Manchuria. This method effectively solves the problem that the squid eggs attached to the egg collection rope are affected by seawater impact during the retrieval of the egg collection device, without affecting the egg-laying of the needleless squid on the egg collection device.

[0015] Preferably, the top plate has a downward-extending annular lower plate along its edge, and the top plate also has an outward-extending annular side plate along its edge. When the base moves upward and abuts against the limiting block, the baffle rotates upward under the action of the elastic element, causing its upper edge to abut against the annular lower plate, with the upper edge of the baffle located below the annular side plate. Thus, during the retrieval of the *Sepia speciosa* egg collection device, the annular side plate can prevent water flow from impacting the upper edge of the baffle, avoiding the rope lifting the collection frame and base upwards together, causing water flow to impact the upper edge of the baffle and causing it to rotate downwards and open, resulting in seawater impacting the squid eggs.

[0016] Preferably, the lower end of the extension rod is inclined toward the center of the base frame.

[0017] Preferably, the upper surface of the base is provided with several receiving grooves, each corresponding to a roller, with the roller located within its corresponding groove. When the base frame is supported on the base, the roller rests against the bottom surface of the receiving groove and is completely contained within its corresponding groove. In this way, after the base is supported on the seabed and the rope is released, the base frame can be smoothly supported on the base without being obstructed by the rollers, thus ensuring that the collection frame is stably supported on the base.

[0018] Preferably, a support boss is provided in the middle of the upper surface of the base, and the height of the support boss is greater than the outer diameter of the roller. When the base frame is supported on the base, the base frame is supported on the upper surface of the support boss, and the roller is located between the base frame and the upper surface of the base. In this way, after the base is supported on the seabed and the rope is released, the base frame can be smoothly supported on the support boss of the base, avoiding obstruction by the roller, thereby ensuring that the collection frame is stably supported on the base.

[0019] Preferably, the baffle includes an upper baffle and a lower baffle. When the baffle rests against the edge of the top plate, the upper baffle is perpendicular to the top plate, and the lower baffle is inclined, with its lower edge tilting towards the center of the base frame. Thus, when the base frame is supported on the base, the rollers rest against the base, and the baffles rotate downwards and separate from the top plate. This allows the gaps between the baffles and between the baffles and the top plate to be further increased when the baffles are in the open state, facilitating the entry of the needleless squid into the collection frame to lay its eggs on the egg-laying rope.

[0020] Preferably, the base frame is provided with a vertical guide hole, through which the vertical guide rod passes.

[0021] Preferably, the collection frame also includes uprights connecting the top plate and the base. In this way, the uprights can support the base and the top plate, creating sufficient space between the top plate and the base for the squid to enter and lay eggs.

[0022] Ideally, the buoyancy of the baffle should be greater than its weight.

[0023] Preferably, a rope is also included, with one end of the rope connected to the top plate and the other end of the rope connected to a buoyancy component.

[0024] The beneficial effect of this invention is that it can effectively solve the problem that the squid eggs attached to the egg collection rope will be impacted by seawater and lose their way when the egg collection device is retrieved, without affecting the squid's egg-laying on the egg collection device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a needleless squid egg collection device of the present invention, with the base supported on the seabed and the frame supported on the base.

[0026] Figure 2 This is a schematic diagram of the structure of a needleless squid egg collection device of the present invention, which is supported on the seabed and is being recovered.

[0027] In the picture:

[0028] Base 1, vertical guide rod 1.1, limiting block 1.2, receiving groove 1.3;

[0029] Collection frame 2, base frame 2.1, top plate 2.2, upright 2.3, annular lower plate 2.4, annular side plate 2.5;

[0030] Baffle 3, upper baffle 3.1, lower baffle 3.2;

[0031] Attached rope 4;

[0032] Rope 5;

[0033] 6 buoyancy components;

[0034] Extension rod 7;

[0035] 8 rollers;

[0036] 9. Undersea Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0038] Specific Implementation Example 1, such as Figure 1 , Figure 2 As shown, a device for collecting eggs attached to the needleless squid of Manscherlae includes a base 1, a collection frame 2, a rope 5, and several baffles 3.

[0039] The base 1 is provided with vertical guide rods 1.1. The upper end of the vertical guide rods 1.1 is provided with a limiting block 1.2. There are 2-4 vertical guide rods 1.1.

[0040] The collection frame 2 is located above the base 1. The collection frame 2 includes a top plate 2.2, a base frame 2.1, and a vertical pole 2.3 connecting the top plate 2.2 and the base frame 2.1. Several attachment ropes 4 are provided between the top plate 2.2 and the base frame 2.1. The base frame 2.1 can slide up and down along the vertical guide rod 1.1, thereby allowing the collection frame 2 as a whole to slide up and down along the vertical guide rod 1.1. A limiting block 1.2 is located above the base frame 2.1. Specifically, the base frame 2.1 has a vertical guide hole through which the vertical guide rod 1.1 passes. The limiting block 1.2 is located above the vertical guide hole.

[0041] One end of rope 5 is connected to the top plate 2.2, and the other end of rope 5 is connected to the buoyancy component 6. The buoyancy component 6 is a buoy, a float, or a floating frame.

[0042] Each baffle 3 is sequentially distributed around the base frame 2.1 along its edge. The baffle 3 is hinged to the edge of the base frame 2.1; in this embodiment, the bottom of the baffle 3 is hinged to the edge of the base frame 2.1. An extension rod 7 extends downwards from the lower edge of the baffle 3 to below the base frame 2.1. A roller 8 is located at the lower end of the extension rod 7. The roller 8 is located between the base frame 2.1 and the base 1.

[0043] like Figure 2 As shown, when the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of buoyancy or elasticity and abuts against the edge of the top plate 2.2. Specifically,

[0044] In one embodiment, the buoyancy of the baffle 3 is greater than its gravity. For example, the baffle 3 is a hollow baffle 3, whose buoyancy is greater than its gravity; or the upper part of the baffle 3 is provided with a float so that the buoyancy of the baffle 3 is greater than its gravity. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of buoyancy and abuts against the edge of the top plate 2.2.

[0045] In another embodiment, an elastic element, such as a torsion spring, tension spring, or elastic rubber band, is provided between the baffle 3 and the base frame 2.1. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of the elastic element and abuts against the edge of the top plate 2.2.

[0046] like Figure 1 As shown, when the base frame 2.1 is supported on the base 1, the roller 8 abuts against the base 1, and the baffle 3 rotates downward and separates from the top plate 2.2. Specifically, when the collection frame 2 slides up and down along the vertical guide rod 1.1 under its own weight and the base frame 2.1 is supported on the base 1, the roller 8 abuts against the base 1, and the baffle 3 rotates downward and opens, separating from the top plate 2.2.

[0047] The specific use of the needleless cuttlefish egg collection device in this embodiment is as follows.

[0048] A needleless squid egg collection device is lowered to the seabed 9 via a rope 5 connected to a top plate 2.2. Supported by a base 1, the device is then released, with the upper end of the rope 5 floating on the surface via a buoyancy component 6 for easy retrieval. Figure 1 As shown, when the base 1 is supported on the seabed 9 and the operator releases the rope 5, the collection frame 2 will descend under its own weight until the base frame 2.1 is supported on the base 1. During this process, the roller 8 abuts against the base 1 and drives the baffle 3 to rotate downwards and open. When the base frame 2.1 is supported on the base 1, the roller 8 abuts against the base 1, the baffle 3 rotates downwards and separates from the top plate 2.2. At this time, each baffle 3 is in the open state, and there is a sufficiently large space between each baffle 3 and between the baffle 3 and the top plate 2.2, allowing the needleless squid to enter the collection frame 2 and lay eggs on the attachment rope 4, attaching the squid eggs to the attachment rope 4 (without affecting the needleless squid laying eggs on the egg collection device).

[0049] When recovering the egg collection device for the needleless squid, such as Figure 2 As shown, the device for collecting eggs from the needleless squid is lifted upwards using rope 5. In this process, rope 5 first lifts the collection frame 2 upward along the vertical guide rod 1.1 until the base frame 2.1 abuts against the limiting block 1.2. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffles 3 rotate upward under the action of buoyancy or elasticity and abut against the edge of the top plate 2.2. Thus, the baffles 3 block the space between the top plate 2.2 and the base frame 2.1, protecting the attachment rope 4 and the squid eggs on the attachment rope 4 within the space enclosed by the top plate 2.2, the base frame 2.1, and the baffles 3. Next, rope 5 lifts the collection frame 2 and the base 1 together until the squid egg collection device is completely lifted. In this way, during the retrieval of the squid egg collection device, the space enclosed by the top plate 2.2, the base frame 2.1, and the baffles 3 can effectively prevent seawater from impacting the squid eggs, thus effectively preventing the squid eggs from falling off and being lost due to seawater impacting the squid eggs. Therefore, this solution provides a method for collecting eggs from the needleless squid of Manchuria. This method effectively solves the problem that the squid eggs attached to the attachment rope 4 are subject to seawater impact during the retrieval of the attachment rope 4, causing the squid eggs on the attachment rope 4 to fall off and be lost, without affecting the spawning of the needleless squid on the attachment rope 4.

[0050] Specific embodiment two, such as Figure 1 , Figure 2 As shown, a device for collecting eggs attached to the needleless squid of Manscherlae includes a base 1, a collection frame 2, a rope 5, and several baffles 3.

[0051] The base 1 is provided with vertical guide rods 1.1. The upper end of the vertical guide rods 1.1 is provided with a limiting block 1.2. There are 2-4 vertical guide rods 1.1.

[0052] The collection frame 2 is located above the base 1. The collection frame 2 includes a top plate 2.2, a base frame 2.1, and a vertical pole 2.3 connecting the top plate 2.2 and the base frame 2.1. Several attachment ropes 4 are provided between the top plate 2.2 and the base frame 2.1. The base frame 2.1 can slide up and down along the vertical guide rod 1.1, thereby allowing the collection frame 2 as a whole to slide up and down along the vertical guide rod 1.1. A limiting block 1.2 is located above the base frame 2.1. Specifically, the base frame 2.1 has a vertical guide hole through which the vertical guide rod 1.1 passes. The limiting block 1.2 is located above the vertical guide hole.

[0053] In one embodiment of this invention, the attachment frame consists of a top plate 2.2, a base frame 2.1, and a vertical pole 2.3 connecting the top plate 2.2 and the base frame 2.1. There is one vertical pole 2.3, located at the center of the top plate 2.2 and the base frame 2.1. This allows the vertical pole 2.3 to support the base 1 and the top plate 2.2, creating sufficient space between the top plate 2.2 and the base frame 2.1 for the squid to enter and lay eggs. Furthermore, it provides more space for arranging the attachment ropes 4, facilitating the placement of more attachment ropes 4.

[0054] In another embodiment of this invention, the attachment frame consists of a top plate 2.2, a base frame 2.1, and uprights 2.3 connecting the top plate 2.2 and the base frame 2.1. There are multiple uprights 2.3, and each upright 2.3 is distributed around the top plate 2.2 and the base frame 2.1.

[0055] One end of rope 5 is connected to the top plate 2.2, and the other end of rope 5 is connected to the buoyancy component 6. The buoyancy component 6 is a buoy, a float, or a floating frame.

[0056] Each baffle 3 is sequentially distributed around the base frame 2.1 along its edge. The baffle 3 is hinged to the edge of the base frame 2.1; in this embodiment, the bottom of the baffle 3 is hinged to the edge of the base frame 2.1. An extension rod 7 extending downwards from the lower edge of the baffle 3 to the bottom of the base frame 2.1 is provided. In this embodiment, the lower end of the extension rod 7 is inclined towards the center of the base frame 2.1. A roller 8 is provided at the lower end of the extension rod 7. The roller 8 is located between the base frame 2.1 and the base 1.

[0057] In this embodiment, the base frame 2.1 is a square, circular, regular polygonal, or other irregular shape. The top plate 2.2 is a square, circular, regular polygonal, or other irregular shape. The shape of the top plate 2.2 matches that of the base frame 2.1. For example, if the base frame 2.1 is square, then the top plate 2.2 is square; if the base frame 2.1 is circular, then the top plate 2.2 is circular.

[0058] In one example, the base frame 2.1 is a square structure, and the corresponding top plate 2.2 is also a square structure. There are four baffles 3, with one baffle 3 corresponding to each side of the base frame 2.1, and the bottom of the baffle 3 is hinged to the side of the base frame 2.1.

[0059] like Figure 2 As shown, when the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of buoyancy or elasticity and abuts against the edge of the top plate 2.2. Specifically,

[0060] In one embodiment, the buoyancy of the baffle 3 is greater than its gravity. For example, the baffle 3 is a hollow baffle 3, whose buoyancy is greater than its gravity; or the upper part of the baffle 3 is provided with a float so that the buoyancy of the baffle 3 is greater than its gravity. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of buoyancy and abuts against the edge of the top plate 2.2.

[0061] In another embodiment, an elastic element, such as a torsion spring, tension spring, or elastic rubber band, is provided between the baffle 3 and the base frame 2.1. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of the elastic element and abuts against the edge of the top plate 2.2.

[0062] like Figure 1 As shown, when the base frame 2.1 is supported on the base 1, the roller 8 abuts against the base 1, and the baffle 3 rotates downward and separates from the top plate 2.2. Specifically, when the collection frame 2 slides up and down along the vertical guide rod 1.1 under its own weight and the base frame 2.1 is supported on the base 1, the roller 8 abuts against the base 1, and the baffle 3 rotates downward and opens, separating from the top plate 2.2.

[0063] The specific use of the needleless cuttlefish egg collection device in this embodiment is as follows.

[0064] A needleless squid egg collection device is lowered to the seabed 9 via a rope 5 connected to a top plate 2.2. Supported by a base 1, the device is then released, with the upper end of the rope 5 floating on the surface via a buoyancy component 6 for easy retrieval. Figure 1As shown, when the base 1 is supported on the seabed 9 and the operator releases the rope 5, the collection frame 2 will descend under its own weight until the base frame 2.1 is supported on the base 1. During this process, the roller 8 abuts against the base 1 and drives the baffle 3 to rotate downwards and open. When the base frame 2.1 is supported on the base 1, the roller 8 abuts against the base 1, the baffle 3 rotates downwards and separates from the top plate 2.2. At this time, each baffle 3 is in the open state, and there is a sufficiently large space between each baffle 3 and between the baffle 3 and the top plate 2.2, allowing the needleless squid to enter the collection frame 2 and lay eggs on the attachment rope 4, attaching the squid eggs to the attachment rope 4 (without affecting the needleless squid laying eggs on the egg collection device).

[0065] When recovering the egg collection device for the needleless squid, such as Figure 2 As shown, the device for collecting eggs from the needleless squid is lifted upwards using rope 5. In this process, rope 5 first lifts the collection frame 2 upward along the vertical guide rod 1.1 until the base frame 2.1 abuts against the limiting block 1.2. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffles 3 rotate upward under the action of buoyancy or elasticity and abut against the edge of the top plate 2.2. Thus, the baffles 3 block the space between the top plate 2.2 and the base frame 2.1, protecting the attachment rope 4 and the squid eggs on the attachment rope 4 within the space enclosed by the top plate 2.2, the base frame 2.1, and the baffles 3. Next, rope 5 lifts the collection frame 2 and the base 1 together until the squid egg collection device is completely lifted. In this way, during the retrieval of the squid egg collection device, the space enclosed by the top plate 2.2, the base frame 2.1, and the baffles 3 can effectively prevent seawater from impacting the squid eggs, thus effectively preventing the squid eggs from falling off and being lost due to seawater impacting the squid eggs. Therefore, this solution provides a method for collecting eggs from the needleless squid of Manchuria. This method effectively solves the problem that the squid eggs attached to the attachment rope 4 are subject to seawater impact during the retrieval of the attachment rope 4, causing the squid eggs on the attachment rope 4 to fall off and be lost, without affecting the spawning of the needleless squid on the attachment rope 4.

[0066] Furthermore, attachment rope 4 is made of nylon. Using nylon rope as attachment rope 4 can increase the number of eggs laid by squid on attachment rope 4. Of course, it should be noted that attachment rope 42 can also be made of other types of rope.

[0067] Furthermore, such as Figure 1 , Figure 2As shown, the top plate 2.2 has a downwardly extending annular lower plate 2.4 around its edge. In this embodiment, the annular lower plate 2.4 is perpendicular to the top plate 2.2. The top plate 2.2 also has an outwardly extending annular side plate 2.5 around its edge. When the base frame 2.1 moves upward and abuts against the limiting block 1.2, the baffle 3 rotates upward under the action of the elastic element, and the upper edge of the baffle 3 abuts against the annular lower plate 2.4, with the upper edge of the baffle 3 located below the annular side plate 2.5. Thus, during the retrieval of the squid egg collection device, the annular side plate 2.5 can block the water flow from impacting the upper edge of the baffle 3, preventing the rope 5 from lifting the collection frame 2 and the base 1 together, causing the water flow to impact the upper edge of the baffle 3, causing the baffle 3 to rotate downward and open, resulting in seawater impacting the squid eggs.

[0068] Furthermore, the baffle 3 is composed of a single flat plate, multiple flat plates, or an arc-shaped plate. Specifically,

[0069] In one implementation, such as Figure 1 , Figure 2 As shown, the baffle 3 includes an upper baffle 3.1 and a lower baffle 3.2. Both the upper baffle 3.1 and the lower baffle 3.2 are flat plates, and the upper baffle 3.1 and the lower baffle 3.2 are integrated, with an included angle of 120-150 degrees between them. When the baffle 3 rests against the edge of the top plate 2.2, the upper baffle 3.1 is perpendicular to the top plate 2.2, the lower baffle 3.2 is inclined, and its lower edge is inclined towards the center of the base frame 2.1. Thus, when the base frame 2.1 is supported on the base 1, the roller 8 rests against the base 1, and the baffle 3 rotates downward and separates from the top plate 2.2. This allows the gap space between the baffles 3 and between the baffle 3 and the top plate 2.2 to be further increased when each baffle 3 is in the open state, which is beneficial for the needleless squid to enter the collection frame 2 and lay eggs on the attachment rope 4.

[0070] In another embodiment, the baffle 3 is composed of a flat plate (not shown in the figure). This facilitates the actual fabrication of the baffle 3.

[0071] In this specific embodiment, the remaining structure is the same as in specific embodiment one or specific embodiment two, except that...

[0072] In one embodiment of this example, such as Figure 1 , Figure 2As shown, the upper surface of the base 1 is provided with several receiving grooves 1.3, each corresponding to a roller 8. The roller 8 can roll on the bottom surface of the receiving groove 1.3. The roller 8 is located within the corresponding receiving groove 1.3. When the base frame 2.1 is supported on the base 1, the roller 8 abuts against the bottom surface of the receiving groove 1.3, and the roller 8 is completely contained within the corresponding receiving groove 1.3. Thus, after the base 1 is supported on the seabed 9 and the rope 5 is released, the collection frame 2 will descend under its own weight until the base frame 2.1 is supported on the base 1. During this process, the roller 8 abuts against the bottom surface of the receiving groove 1.3 and rolls along the bottom surface of the receiving groove 1.3, so that the drive baffle 3 can be smoothly rotated downwards and opened, while the base frame 2.1 can be smoothly supported on the upper surface of the base 1, avoiding obstruction by the roller 8, thereby ensuring that the collection frame 2 is stably supported on the base 1.

[0073] In another embodiment of this invention, a support boss (not shown in the figure) is provided in the middle of the upper surface of the base 1, and the upper surface of the support boss is flat. The height of the support boss is greater than the outer diameter of the roller 8. When the base frame 2.1 is supported on the base 1, the base frame 2.1 is supported on the upper surface of the support boss, and the roller 8 is located between the base frame 2.1 and the upper surface of the base 1. Thus, after the base 1 is supported on the seabed 9 and the rope 5 is released, the collection frame 2 will descend under its own weight until the base frame 2.1 is supported on the support boss of the base 1. During this process, the roller 8 abuts against the upper surface of the base 1 and rolls along the upper surface of the base 1, so that the drive baffle 3 can be smoothly rotated downward and opened, and the base frame 2.1 can be smoothly supported on the support boss, avoiding obstruction by the roller 8, thereby ensuring that the collection frame 2 is stably supported on the base 1.

[0074] In the third embodiment of this example, the upper surface of the base 1 is flat. The base frame 2.1 is provided with several receiving openings (not shown in the figure), and the rollers 8 and extension rods 7 can be accommodated within these openings. When the base frame 2.1 is supported on the base 1, the rollers 8 abut against the upper surface of the base 1, and the rollers 8 and extension rods 7 are accommodated within the receiving openings of the base frame 2.1. Thus, after the base 1 is supported on the seabed 9 and the rope 5 is released, the collection frame 2 will descend under its own weight until the base frame 2.1 is supported on the upper surface of the base 1. During this process, the rollers 8 abut against the upper surface of the base 1 and roll along the upper surface of the base 1, allowing the drive baffle 3 to rotate downwards smoothly and open smoothly. Simultaneously, the base frame 2.1 can be smoothly supported on the support protrusion, avoiding obstruction by the rollers 8, thereby ensuring that the collection frame 2 is stably supported on the base 1.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A device for collecting eggs attached to the needleless cuttlefish (Sepia mansoni), characterized in that, include: A base with a vertical guide rod on it, and a limiting block at the upper end of the vertical guide rod; The collection frame located above the base includes a top plate and a bottom frame. The bottom frame can slide up and down along the vertical guide rod. The limiting block is located above the bottom frame. Several attachment ropes are provided between the top plate and the bottom frame. Several baffles are arranged around the base frame. The buoyancy of the baffles is greater than the gravity. The baffles are hinged to the edge of the base frame. The lower edge of the baffles is provided with an extension rod that extends downward to the bottom of the base frame. The lower end of the extension rod is provided with a roller. The upper surface of the base is provided with several receiving grooves. The receiving grooves correspond one-to-one with the rollers, and the rollers are located in the corresponding receiving grooves. When the base frame moves upward and abuts against the limit block, the baffle rotates upward and abuts against the edge of the top plate under the action of the baffle buoyancy or elastic element. When the base frame is supported on the base, the rollers abut against the bottom surface of the receiving groove, and the rollers are completely contained in the corresponding receiving groove. The baffle rotates downward and separates from the top plate.

2. The device for collecting eggs of the needleless cuttlefish according to claim 1, characterized in that, The top plate has a downward-extending annular lower plate at its edge, and the top plate also has an outward-extending annular side plate at its edge. When the base frame moves upward and abuts against the limiting block, the baffle rotates upward under the action of the elastic element and the upper edge of the baffle abuts against the annular lower plate, and the upper edge of the baffle is located below the annular side plate.

3. The device for collecting eggs of the needleless cuttlefish according to claim 1, characterized in that, The lower end of the extension rod is inclined toward the center of the base frame.

4. A device for collecting eggs from the needleless cuttlefish (Sepia mansoni) according to claim 1, 2, or 3, characterized in that, The upper surface of the base is provided with a support boss in the middle, and the height of the support boss is greater than the outer diameter of the roller.

5. The device for collecting eggs of the needleless cuttlefish according to claim 4, characterized in that, When the base frame is supported on the base, the base frame is supported on the upper surface of the support boss, and the rollers are located between the upper surfaces of the base frame and the base.

6. A device for collecting eggs from the needleless cuttlefish (Sepia mansoni) according to claim 1, 2, or 3, characterized in that, The baffle includes an upper baffle and a lower baffle. When the baffle abuts against the edge of the top plate, the upper baffle is perpendicular to the top plate, the lower baffle is inclined, and the lower edge of the lower baffle is inclined towards the center of the base frame.

7. A device for collecting eggs from the needleless cuttlefish (Sepia mansoni) according to claim 1, 2, or 3, characterized in that, The base frame is provided with a vertical guide hole, through which the vertical guide rod passes.

8. A device for collecting eggs from the needleless cuttlefish (Sepia mansoni) according to claim 1, 2, or 3, characterized in that, The data collection frame also includes uprights connecting the top plate and the base frame.

9. A device for collecting eggs from the needleless cuttlefish (Sepia mansoni) according to claim 1, 2, or 3, characterized in that, It also includes a rope, one end of which is connected to the top plate, and the other end of which is connected to a buoyancy component.

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