Fish egg and fry collecting device

Abstract

The utility model discloses a fish egg and fry collecting device which comprises a net cage installed on one side of the front end of a ship body and an adjusting mechanism used for adjusting the spatial position of the net cage relative to the water surface. A fish blocking door net is arranged at the front end of the net cage and comprises fixed rods fixedly connected with vertical sliding grooves in the two sides of the front end of the net cage, movable rods moving up and down along the vertical sliding grooves and net cloth connected between the movable rods and the fixed rods. And the lifting mechanism is used for controlling the movable rod to ascend and descend. The adjusting mechanism comprises two vertical rods connected with the left side and the right side of the front end of the net cage, a transverse rod connected with the top ends of the two vertical rods and perpendicular to the vertical rods, and a T-shaped rotating shaft connected with the transverse rod in a sliding mode. A vertical rod of the T-shaped rotating shaft is sleeved at the upper end of the base, and the lower end of the base is fixed on a ship body. The fish fry collecting device is simple in overall structure, reasonable in structure, convenient to operate and capable of improving the working efficiency of fish fry collecting and further improving the survival rate of fish fries in the collecting process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fishery equipment, especially to a fish egg and fry collecting device. BACKGROUND

[0002] There are many fish species producing sticky and adhesive eggs in rivers, and the fertilized eggs need to adhere to substrates such as stones, silt, waterweeds or mussels to complete the embryonic development process. The operation of large reservoirs for water storage and regulation changes the river habitat, causing the disappearance of the spawning environment required for the reproduction of many sticky and adhesive fish species. For example, the fish eggs of sticky and adhesive fish species that spawn on the waterweed substrate in the shallow water area along the coast die due to exposure to air and drying out as a result of the decrease in water level for flood control and regulation. These fish species have lost their natural conditions for reproduction, and the number and species of fish have decreased dramatically.

[0003] In view of this, relevant personnel have developed artificial fish nests, including floating frame type artificial fish nests and three-dimensional artificial fish nests, which are applied to various water bodies to promote the natural reproduction of fish species producing sticky and adhesive eggs and alleviate the adverse effects of the continuous decrease in water level of reservoirs on the hatching of sticky and adhesive fish eggs during the fish breeding season. This is of great significance for protecting fish resources producing sticky and adhesive eggs, maintaining local fishery resources, and protecting the biodiversity of the river basin.

[0004] When the fish spawning season arrives, artificial fish nests are placed at appropriate locations in rivers or reservoir areas, and the fertilized eggs of adult fish will adhere to the artificial fish nests, and after hatching, fry is formed. During collection, the hatched fry is usually transported to a fry collecting pool net cage using the siphon principle, or the hatched fry is caught near the artificial fish nest using a small net, and then placed in a fry collecting pool net cage to complete the collection of eggs and fry from artificial fish nests.

[0005] Using the siphon principle or artificial net fishing, the fry is easy to escape or die, resulting in low efficiency of fry collection. UTILITY MODEL CONTENTS

[0006] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a fish egg and fry collecting device which is simple in overall structure, reasonable in structure, easy to operate, can improve the work efficiency of fry collection, and further improve the survival rate of fry during the collection process.

[0007] To achieve the above-mentioned purpose, the utility model provides a fish egg and fry collecting device, which comprises a net cage installed on one side of the front end of a ship body, and an adjusting mechanism for adjusting the spatial position of the net cage relative to the water surface. The front end of the net cage is provided with a fish blocking door net, which comprises a fixed rod fixedly connected with vertical sliding grooves on both sides of the front end of the net cage, a movable rod moving up and down along the vertical sliding grooves, and a mesh cloth connected between the movable rod and the fixed rod. The utility model also comprises a lifting mechanism for controlling the lifting and lowering of the movable rod.

[0008] Preferably, the adjusting mechanism comprises two vertical rods connected to the left and right sides of the front end of the net cage, a horizontal rod connected to the top ends of the two vertical rods and arranged perpendicularly to the vertical rods, and a T-shaped rotating shaft slidingly connected to the horizontal rod; the vertical rod of the T-shaped rotating shaft is sleeved on the upper end of the base, and the lower end of the base is fixed on the hull.

[0009] Further, the lifting mechanism comprises a pull rope connected to the two ends of the movable rod and a pulley connected to the pull rope; the pulley is installed on the front end of the horizontal rod and located at the middle position between the two vertical rods; the front end of the horizontal rod is further provided with a wire inlet hole through which the pull rope passes, and the end of the pull rope reaches the end of the horizontal rod through the wire inlet hole and the inner cavity of the horizontal rod.

[0010] Preferably, the vertical sliding groove is arranged at the lower end of the two vertical rods, and the two ends of the movable rod are connected to the two ends of the pull rope, respectively.

[0011] Further, the horizontal rod of the T-shaped rotating shaft has a tubular cavity structure through which the horizontal rod passes.

[0012] Further, the horizontal rod and the vertical rod of the T-shaped rotating shaft are rotatably connected through a rotating shaft; the horizontal rod is provided with through holes arranged at intervals along the length direction of the horizontal rod, and the rotating shaft passes through the through holes on the vertical rod, the horizontal rod and the horizontal rod to connect the horizontal rod and the T-shaped rotating shaft.

[0013] Preferably, the rear end, the left and right ends and the bottom end of the net cage are enclosed by a water-permeable net.

[0014] Further, the bottom end of the net cage is uniformly distributed with counterweights, and the top end of the net cage is provided with net frames on three sides, and the upper edges of the net frames are uniformly distributed with floats.

[0015] Compared with the prior art, the fish egg and fry collecting device has the following advantages:

[0016] 1. The adjusting mechanism composed of the vertical rod, the horizontal rod, the T-shaped rotating shaft and the base is used to adjust the spatial position of the net cage, so that the artificial fish tank is completely sleeved in the net cage, fish fry escape is avoided, the operation of fish fry collecting work is convenient, and the work efficiency is improved.

[0017] 2. The lifting mechanism composed of the pull rope and the pulley is used to open and close the front end of the net cage in cooperation with the vertical rod and the horizontal rod of the adjusting mechanism, so that the artificial fish nest enters and exits the net cage conveniently, the possibility of fish fry escape is further avoided, and the survival rate in the process of fish fry collecting is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0019] Fig. 1 It is a structural schematic view of the fish egg and fry collecting device of the present application.

[0020] Fig. 2 It is a side view of the fish egg and fry collecting device of the present application.

[0021] In the figure: 1-net cage; 1.1-buoy; 1.2-weight block; 1.3-net frame; 2-vertical rod; 2.1-vertical sliding groove; 2.2-wire outlet hole; 3-cross rod; 3.1-wire inlet hole; 4-pulling rope; 5-T-shaped rotating shaft; 6-base; 7-pulley; 8-fish blocking door net; 8.1-movable rod; 8.2-fixed rod. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0023] The following will be described in detail Figs. 1-2 The fish egg and fry collecting device of the present application will be described in detail.

[0024] The fish egg and fry collecting device of the present application comprises a net cage 1 installed at one side of the front end of a ship body, and an adjusting mechanism for adjusting the spatial position of the net cage 1 relative to the water surface. The adjusting mechanism comprises two vertical rods 2 connected with the left and right sides of the front end of the net cage 1, a cross rod 3 connected with the top ends of the two vertical rods 2 and arranged perpendicularly to the vertical rods 2, and a T-shaped rotating shaft 5 slidingly connected with the cross rod 3. The vertical rod of the T-shaped rotating shaft 5 is sleeved on the upper end of a base 6, and the lower end of the T-shaped rotating shaft 5 is matched with the upper end of the base 6, so that the T-shaped rotating shaft 5 can rotate 360 degrees on the base 6. The lower end of the base 6 is fixed on the ship body.

[0025] The rear end, the left and right ends and the bottom end of the net cage 1 are enclosed by the water-permeable net, the porosity of the water-permeable net is customized according to the size of the fry, and the bottom end of the net cage 1 is evenly distributed with the counterweight 1.2, so that the net cage 1 can sink underwater.

[0026] In the utility model, the horizontal rod of T-shaped rotating shaft 5 has tubular cavity structure for the horizontal rod 3 to pass through. The horizontal rod and the vertical rod of T-shaped rotating shaft 5 are rotatably connected through the rotating shaft. The horizontal rod 3 is provided with through holes arranged at intervals along the length direction, and the rotating shaft passes through the through holes on the vertical rod, the horizontal rod and the horizontal rod 3 to connect the horizontal rod 3 with T-shaped rotating shaft 5. The tubular cavity structure on the upper end of T-shaped rotating shaft 5 can move up and down relative to the vertical rod of T-shaped rotating shaft 5, and the horizontal rod 3 can move up and down.

[0027] The vertical rod 2, the horizontal rod 3, the T-shaped rotating shaft 5 and the base 6 in the utility model are preferably light metal materials.

[0028] The upper end of the net cage 1 is open, the front end of the net cage 1 is connected with the lower end of the vertical rod 2 on both sides, the two vertical rods 2 are parallel to each other and perpendicular to the water surface, and the upper end of the vertical rod 2 is higher than the upper end plane of the net cage 1. The embodiment of the utility model is preferably 50-80cm higher than the upper end plane of the net cage 1. The top ends of the two vertical rods 2 are vertically connected with the front end of the horizontal rod 3.

[0029] When collecting fish eggs and fry, the ship drives against the current, the driving speed is adjusted, the net cage 1 is sunk into the water in front of the artificial fish nest near the water surface, the front end of the horizontal rod 3 is connected with the vertical rod 2, the end of the horizontal rod 3 passes through the tubular cavity on the upper end of the T-shaped rotating shaft 5, the whole egg and fry collecting device is moved to the artificial fish nest direction driven by the ship power, the T-shaped rotating shaft 5 can rotate 360 degrees on the base 6, in order to make the net cage 1 fit into the artificial fish nest, the T-shaped rotating shaft 5 can be rotated 360 degrees to adjust the angle, the end of the horizontal rod 3 passes through the tubular cavity structure on the upper end of the T-shaped rotating shaft 5, through the cooperation of the rotating shaft and the different through holes on the horizontal rod 3, the distance between the ship and the net cage 1 can be adjusted horizontally, the tubular cavity structure can move up and down, and the water depth of the net cage 1 can be adjusted. The angle of the net cage 1 in the water can be adjusted appropriately during driving, so that the artificial fish tank is completely fitted into the net cage 1, the fry will escape from the artificial fish nest into the net cage 1 after being disturbed by external factors, the net cage 1 will slowly exit the artificial fish tank along the water flow after the ship stops driving, the tubular cavity structure on the upper end of the T-shaped rotating shaft 5 can move up and down, the horizontal rod 3 can be lifted, the front side of the net cage 1 is lifted, and the fry is prevented from escaping, the fry in the net cage 1 is transferred to the temporary breeding equipment by using small nets, and the fry collecting work is completed.

[0030] Based on the above embodiment, the front end of the net cage 1 is provided with a fish blocking door net 8, the fish blocking door net 8 comprises a fixed rod 8.2 fixedly connected with the vertical sliding groove 2.1 on both sides of the front end of the net cage 1, a movable rod 8.1 moving up and down along the vertical sliding groove 2.1, and a mesh cloth connected between the movable rod 8.1 and the fixed rod 8.2. The two ends of the movable rod 8.1 and the fixed rod 8.2 are respectively clamped into the vertical sliding groove 2.1, the two ends of the fixed rod 8.2 are fixed with the vertical sliding groove 2.1, and the two ends of the movable rod 8.1 can slide up and down in the vertical sliding groove 2.1. The height of the vertical sliding groove 2.1 is consistent with the height of the net cage 1.

[0031] The fish egg and fry collecting device further comprises a lifting mechanism for controlling the lifting and falling of the movable rod 8.1. Specifically, the lifting mechanism comprises a pull rope 4 connected with the two ends of the movable rod 8.1 and a pulley 7 connected with the pull rope 4. The pulley 7 is installed at the front end of the cross rod 3 and located at the middle position between the two vertical rods 2. The front end of the cross rod 3 is also provided with a wire inlet hole 3.1 for the pull rope 4 to pass through, and the end of the pull rope 4 reaches the end of the cross rod 3 through the inner cavity of the cross rod 3 via the wire inlet hole 3.1. The vertical sliding groove 2.1 is arranged at the position close to the lower end of the two vertical rods 2, and the positions close to the upper end of the two vertical rods 2 are respectively provided with wire outlet holes 2.2. The leading end of the pull rope 4 is branched into two parts and connected with the two ends of the movable rod 8.1 via the wire outlet holes 2.2. The pull rope 4 is led out of the wire outlet holes 2.2 and connected with the pulley 7 located at the front end of the cross rod 3, and the end of the pull rope 4 reaches the end of the cross rod 3 through the inner cavity of the cross rod 3 via the wire inlet hole 3.1 located at the front end of the cross rod 3.

[0032] Specifically, the whole egg and fry collecting device is driven by the ship power to move towards the artificial fish nest, the T-shaped rotating shaft 5 can rotate 360 degrees on the base 6, and the angle of the net cage 1 in the water can be appropriately adjusted during the driving process, so that the artificial fish tank is completely fitted into the net cage 1, the fry will escape from the artificial fish nest into the net cage 1 after being disturbed by external factors, the net cage 1 will slowly exit the artificial fish tank along the water flow after the ship stops advancing, and immediately pull the pull rope 4 at the end of the cross rod 3 to drive the pull rope 4 through the pulley 7 located at the front end of the cross rod 3, so that the movable rod 8.1 in the vertical sliding groove 2.1 moves upward until the fish blocking door net 8 is completely lifted to further avoid the possibility of fry escaping. Small nets are used to transfer the fry in the net cage 1 to the temporary breeding equipment, and the fry collecting work is completed.

[0033] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can understand the transformation or replacement within the technical range disclosed by the utility model, which should be covered in the inclusive scope of the utility model.

Claims

1. A fish egg and fry collection device, characterized in that: Includes a net cage (1) installed on one side of the front of the hull and an adjustment mechanism for adjusting the spatial position of the net cage (1) relative to the water surface; The front end of the net cage (1) is provided with a fish barrier net (8), which includes a fixed rod (8.2) fixedly connected to the vertical sliding grooves (2.1) on both sides of the front end of the net cage (1), a movable rod (8.1) that moves up and down along the vertical sliding grooves (2.1), and a net cloth connected between the movable rod (8.1) and the fixed rod (8.2); It also includes a lifting mechanism for controlling the raising and lowering of the movable lever (8.1).

2. The fish egg and fry collection device according to claim 1, characterized in that, The adjustment mechanism includes two uprights (2) connected to the left and right sides of the front end of the cage (1), a horizontal bar (3) connected to the top of the two uprights (2) and perpendicular to the uprights (2), and a T-shaped rotating shaft (5) slidably connected to the horizontal bar (3). The vertical rod of the T-shaped pivot (5) is fitted onto the upper end of the base (6), and the lower end of the base (6) is fixed to the hull.

3. The fish egg and fry collection device according to claim 2, characterized in that, The lifting mechanism includes a pull rope (4) connected to both ends of the movable rod (8.1) and a pulley (7) connected to the pull rope (4); the pulley (7) is installed at the front end of the crossbar (3) and located in the middle between the two uprights (2); The front end of the crossbar (3) is also provided with an inlet hole (3.1) for the pull rope (4) to pass through. The end of the pull rope (4) passes through the inlet hole (3.1) and through the inner cavity of the crossbar (3) to reach the end of the crossbar (3).

4. The fish egg and fry collection device according to claim 3, characterized in that, The vertical slide (2.1) is set near the lower end of the two uprights (2), and the two uprights (2) are respectively provided with cable outlet holes (2.2) near the upper end. The first end of the pull rope (4) is branched into two parts and passes through the cable outlet holes (2.2) to connect with the two ends of the movable rod (8.1).

5. The fish egg and fry collection device according to claim 2, characterized in that, The horizontal bar of the T-shaped pivot (5) has a tubular cavity structure through which the crossbar (3) passes.

6. The fish egg and fry collection device according to claim 5, characterized in that, The horizontal and vertical rods of the T-shaped rotating shaft (5) are rotatably connected by the rotating shaft; the horizontal rod (3) is provided with through holes spaced apart along its length direction, and the rotating shaft passes through the through holes on the vertical rod, horizontal rod and horizontal rod (3) to connect the horizontal rod (3) to the T-shaped rotating shaft (5).

7. The fish egg and fry collection device according to claim 1, characterized in that, The rear, left, right and bottom ends of the cage (1) are enclosed by permeable netting.

8. The fish egg and fry collection device according to claim 1, characterized in that, The bottom of the cage (1) is evenly distributed with counterweights (1.2) on all four sides; the top three sides of the cage (1) are fitted with a net frame (1.3), and the upper edge of the net frame (1.3) is evenly distributed with floats (1.1).

Images