Fish collecting cage and fish resource investigation equipment

Abstract

The utility model discloses a fish collection cage and fish resource survey equipment, the fish collection cage includes the fish collection cage body, the fish collection cage body is provided with a fish collection mouth and a fish outlet, the fish outlet is provided with a fish outlet opening and closing mechanism, the top of the fish collection cage body is provided with an opening for a camera to extend into the inner cavity of the fish collection cage body. The fish resource investigation equipment comprises a camera used for photographing fish resources in the fish collecting cage, a lifting device used for lifting the fish collecting cage and the fish collecting cage, the lifting device and the camera are installed on the support, and the fish collecting cage is connected with the lifting device. According to the utility model, aquatic ecology investigation work of a target water area can be efficiently collected in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of fish resource investigation, and in particular relates to a fish collecting cage and fish resource investigation equipment. Background Art

[0002] Fish resource survey is the core of aquatic ecological survey. Usually, fish resource survey mainly adopts manual field survey method, which is to manually set fishing nets or place ground cages and other facilities to catch the fish on the shore, and then manually count the types and quantities of fish resources. The manual field survey method is costly, inefficient, time-consuming and labor-intensive, and the fishing net has poor capture effect, making it difficult to achieve fully automatic fishing, counting and releasing processes.

[0003] Although, some automatic fish resource survey equipment has appeared now, see patent application number 202210892830.4, its automatic sinking and floating mechanism adopts a vertical drive push rod, and through the telescopic action of the vertical drive push rod, the fishing main box is driven to move up and down. When the flow rate of the water area exceeds a certain value, the flowing water will push the fishing main box, making the service life of the vertical drive push rod shorter. And because the vertical drive push rod is fixedly installed at the other end of the horizontal fixed rod, once the vertical drive push rod is fixedly installed, the horizontal position of the fishing main box cannot be adjusted.

[0004] And the camera is fixedly installed on the horizontal fixed rod, and the solution of photographing the fish in the main fishing box is adopted outside the main fishing box, and the photographing effect may be poor. Utility Model Content

[0005] The utility model aims to overcome at least one defect in the prior art and provides a fish collecting cage and fish resource survey equipment.

[0006] The technical solution of the utility model is implemented as follows: the utility model discloses a fish collecting cage, including a fish collecting cage body, the fish collecting cage body is provided with a fish collecting port and a fish outlet, the fish outlet is equipped with a fish outlet opening and closing mechanism, and the top of the fish collecting cage body is provided with an opening for allowing a camera to extend into the inner cavity of the fish collecting cage body.

[0007] Furthermore, the top and side walls of the fish collecting cage body are provided with a plurality of fish collecting openings.

[0008] Furthermore, the fish collecting mouth of the fish collecting cage body is provided with a conical cylinder, the diameter of which gradually decreases from the outside to the inside, the large diameter end of the conical cylinder is connected to the outer wall of the fish collecting cage body, and the small diameter end of the conical cylinder extends inwardly to the inner cavity of the fish collecting cage body.

[0009] Furthermore, a plurality of mesh holes are provided on the side wall of the conical cylinder.

[0010] The utility model discloses a fish resource survey device, comprising a camera for taking photos of fish resources inside a fish collecting cage, a lifting device for lifting the fish collecting cage, and the fish collecting cage as described above, wherein the lifting device and the camera are mounted on a bracket, the fish collecting cage is connected to the lifting device, and a fish attracting lamp is arranged in the inner cavity of the fish collecting cage.

[0011] Furthermore, the camera is suspended on the bracket through a fixing member, and when the fish collecting cage is lifted to a set position, the camera extends from the opening into the inner cavity of the fish collecting cage.

[0012] Furthermore, the lifting device comprises an electric hoist, the fish collecting cage is connected to the electric hoist via a steel wire rope, and the electric hoist is mounted on a bracket.

[0013] Furthermore, the lifting device also includes at least one group of movable pulleys for cooperating with the wire rope of the lifting device and fixed pulleys corresponding to each group of movable pulleys. Each group of movable pulleys includes at least one movable pulley. The movable pulley is rotatably mounted on the top of the fish collecting cage. The wire rope of the electric hoist passes through the corresponding upper end of the fixed pulley and the lower end of the movable pulley in sequence and is connected to the mounting frame or bracket. The fixed pulley is mounted on the mounting frame or bracket, and the mounting frame is mounted on the bracket.

[0014] Furthermore, the mounting frame is fixedly mounted on a translation device for driving the fish collecting cage to move horizontally along the cantilever, and the translation device is slidably mounted on the cantilever of the bracket.

[0015] Furthermore, the fish resource survey equipment of the utility model also includes an electric control box, and the lifting device, the fish outlet opening and closing mechanism, the camera, and the fish attracting light are electrically connected to the electric control box respectively.

[0016] Furthermore, a bird-repelling device is provided on the cantilever of the bracket.

[0017] The utility model has at least the following beneficial effects: the top of the fish collecting cage of the utility model is provided with an opening for allowing a camera to extend into the inner cavity of the fish collecting cage. The camera is suspended on a bracket through a fixing member, and when the fish collecting cage is lifted to a set position, the camera extends from the opening into the inner cavity of the fish collecting cage to take pictures of the fish resources inside the fish collecting cage. The above scheme of the utility model is adopted, and the shooting effect is better.

[0018] The top of the fish collecting cage is equipped with at least one group of movable pulleys for cooperating with the wire rope of the lifting device, each group of movable pulleys includes at least two movable pulleys, and the fish collecting cage that can be raised and lowered also includes a fixed pulley corresponding to each group of movable pulleys. The lifting device of the utility model includes an electric hoist, and the wire rope of the electric hoist passes through the corresponding upper end of the fixed pulley and the lower end of the movable pulley in sequence and is connected to the mounting frame, and the fixed pulley is installed on the mounting frame. The utility model adopts the above scheme to lift the fish collecting cage, which can ensure the smooth lifting and lowering of the survey equipment, avoid shaking or tilting during the lifting process, and has a long service life.

[0019] The mounting frame of the utility model is fixedly mounted on the translation device, and the translation device is slidably mounted on the cantilever of the bracket, so that the fish collecting cage can accurately reach the predetermined position and maintain stability during the lifting process.

[0020] The utility model releases fish in time through the fish outlet opening and closing mechanism, i.e., the releasing mechanism, thereby reducing the impact of survey activities on the fish ecology, ensuring that the fish can still survive after data collection, and helping to maintain ecological balance.

[0021] The design of the fish collecting cage of the utility model can reduce the damage to the fishes during the collection process, and ensure that the fishes remain in a healthy state during the collection process.

[0022] The fish attracting lamp of the utility model can effectively attract fish by emitting specific light, thereby improving the efficiency of collecting fish in the fish collecting cage.

[0023] This device uses three-color fish attracting lights to attract target fish into the fish cage. After the fish are attracted, the fish cage is automatically lifted to the set position. Then, through the high-precision intelligent video recognition system, the aquatic ecological survey of the target waters is collected in real time and efficiently. This utility model can automatically sink and float to catch fish at a fixed time, and with the help of the camera and the background fish intelligent recognition platform, it can realize the process of fully automatic fishing, counting and releasing, which is more efficient and intelligent than the traditional manual on-site fishing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of a liftable fish attracting device from one perspective provided by an embodiment of the utility model;

[0026] Figure 2A schematic structural diagram of a liftable fish attracting device from another perspective provided in one embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the structure of a fish collecting cage provided by an embodiment of the utility model;

[0028] Figure 4 A partial schematic diagram of a fish collecting cage provided in another embodiment of the utility model;

[0029] Figure 5 A schematic diagram of the structure of a fishnet provided by an embodiment of the utility model;

[0030] Figure 6 A schematic diagram of the installation of a fish attracting light provided by an embodiment of the utility model;

[0031] Figure 7 A bottom schematic diagram of a fish collecting cage provided in one embodiment of the utility model.

[0032] In the accompanying drawings, 1 is a column, 2 is a cantilever, 3 is an electric hoist, 4 is a mounting frame, 5 is a fixed pulley, 6 is a movable pulley, 7 is a fish collecting cage, 71 is a fish net, 72 is an opening, 73 is a hinge, 74 is a locking device, 75 is a fish attracting light mounting frame, 8 is a fish attracting light, 9 is a camera, 10 is a bird repellent device, 11 is an electric control box, and 12 is a translation device. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more.

[0036] Embodiment 1

[0037] See also Figures 1 to 7 The embodiment of the utility model discloses a fish collecting cage 7, including a fish collecting cage 7 body, the fish collecting cage 7 body is provided with a fish collecting port and a fish outlet, the fish outlet is equipped with a fish outlet opening and closing mechanism, and the top of the fish collecting cage 7 body is provided with an opening 72 for allowing a camera 9 to extend into the inner cavity of the fish collecting cage 7 body.

[0038] Of course, the opening 72 may also be a fish collecting opening, and the camera 9 may also enter the inner cavity of the fish collecting cage 7 through the fish collecting opening.

[0039] In some embodiments, the fish collecting port is conical. The diameter of the fish collecting port gradually decreases from the outside to the inside. Of course, the fish collecting port is not limited to conical, and any existing fish collecting port can also be used.

[0040] In some embodiments, the fish collecting opening of the fish collecting cage 7 body is provided with a fish net 71, the large diameter end of the fish net 71 is connected to the outer wall of the fish collecting cage 7 body, and the small diameter end of the fish net 71 extends inwardly to the inner cavity of the fish collecting cage 7 body. The fish collecting cage 7 is provided with an installation hole (such as a round hole) for installing the fish net 71.

[0041] In some embodiments, the fish net 71 is a conical cylinder, the diameter of which gradually decreases from the outside to the inside. The large diameter end of the conical cylinder is connected to the outer wall of the fish collecting cage 7, and the small diameter end of the conical cylinder extends inwardly to the inner cavity of the fish collecting cage 7.

[0042] The number and positions of the fish collecting openings of the fish collecting cage 7 body of the utility model are set according to needs.

[0043] Furthermore, the cage body of the fish collecting cage 7 is composed of side panels, a top panel and a bottom panel, the top panel and the bottom panel are regular hexagons, there are six side panels, the upper ends of the six side panels are respectively connected to the six sides of the top panel, and the lower ends of the six side panels are respectively connected to the six sides of the bottom panel.

[0044] Furthermore, mesh holes are provided on the side plates, top plate and / or bottom plate of the body of the fish collecting cage 7 .

[0045] Furthermore, the top and side walls of the fish collecting cage 7 body are provided with a plurality of fish collecting openings.

[0046] Further, the fish outlet is located at the bottom of the body of the fish collecting cage 7, and the fish outlet opening and closing mechanism includes a bottom plate for sealing the fish outlet, one side of the bottom plate (which may be the entire bottom plate of the fish collecting cage 7 or a part of the bottom plate of the fish collecting cage 7) is hinged to the body of the fish collecting cage 7 and can rotate around the hinge point, and a locking device 74 for locking the bottom plate and the body of the fish collecting cage 7 is provided between the other side of the bottom plate and the body of the fish collecting cage 7. The locking device 74 may be, but is not limited to, an electrically controlled lock, such as a remote control lock.

[0047] Furthermore, a driving device for driving the bottom plate to rotate around a hinge point is provided between the bottom plate and the body of the fish collecting cage 7. The driving device is selected according to needs.

[0048] Of course, the fish outlet opening and closing mechanism of the present invention is not limited to the above-mentioned embodiment. The fish outlet opening and closing mechanism of the present invention can also adopt various existing fish outlet opening and closing mechanisms.

[0049] Embodiment 2

[0050] See also Figures 1 to 7 The embodiment of the utility model also discloses a fish resource survey device, including a camera 9 for taking pictures of fish resources inside the fish collecting cage 7 and a lifting device for lifting the fish collecting cage 7, and the fish collecting cage 7 as described in the first embodiment, wherein the lifting device and the camera 9 are installed on a bracket, and the fish collecting cage 7 is connected to the lifting device.

[0051] Furthermore, a fish attracting light 8 is provided in the inner cavity of the fish collecting cage 7 .

[0052] A fish attracting light mounting frame 75 is fixed to the lower end of the top plate of the fish collecting cage 7 , and the fish attracting light 8 is fixedly mounted on the fish attracting light mounting frame 75 .

[0053] Furthermore, the fish attracting light 8 is a three-color fish attracting light 8 .

[0054] Furthermore, the camera 9 is suspended on the bracket through a fixing member, and when the fish collecting cage 7 is lifted to a set position, the camera 9 extends from the opening 72 into the inner cavity of the fish collecting cage 7 .

[0055] Of course, the present invention can also lift the camera 9 without lifting the fish collecting cage 7, so that the camera 9 extends from the opening 72 into the inner cavity of the fish collecting cage 7. Alternatively, the present invention lifts the fish collecting cage 7 and lifts the camera 9, so that the camera 9 extends from the opening 72 into the inner cavity of the fish collecting cage 7.

[0056] Furthermore, the fish collecting cage 7 is made of stainless steel. The fixing member may be, but is not limited to, a steel wire rope.

[0057] Furthermore, the shape and position of the opening 72 are set as required.

[0058] Furthermore, the lifting device includes an electric hoist 3, the fish collecting cage 7 is connected to the electric hoist 3 through a steel wire rope, and the electric hoist 3 is installed on a bracket.

[0059] Furthermore, the lifting device also includes at least one group of movable pulleys 6 for cooperating with the wire rope of the lifting device and fixed pulleys 5 corresponding to each group of movable pulleys 6. Each group of movable pulleys 6 includes at least one movable pulley 6. The movable pulley 6 is rotatably mounted on the top of the fish collecting cage 7. The wire rope of the electric hoist 3 passes through the corresponding upper end of the fixed pulley 5 and the lower end of the movable pulley 6 in sequence and is connected to the mounting frame 4 or the bracket (such as a lifting ring provided on the mounting frame 4 or the bracket). The fixed pulley 5 is rotatably mounted on the mounting frame 4 or the bracket, and the mounting frame 4 is mounted on the bracket.

[0060] One end of the steel wire rope of the electric hoist 3 is wound on the drum, and the other end of the steel wire rope of the electric hoist 3 passes through the corresponding upper end of the fixed pulley 5 and the lower end of the movable pulley 6 in sequence and is connected to the mounting frame 4.

[0061] Furthermore, two groups of movable pulleys 6 are installed on the top of the fish collecting cage 7, each group of movable pulleys 6 includes two movable pulleys 6, and the four movable pulleys 6 are distributed in a rectangular shape. The electric hoist 3 of the lifting device includes two drums, wherein the first steel wire rope of the first drum passes through the upper end of the corresponding first fixed pulley 5 and the lower ends of the two first movable pulleys 6 in sequence and then is connected to the mounting frame 4, and the second steel wire rope of the second drum passes through the upper end of the corresponding second fixed pulley 5 and the lower ends of the two second movable pulleys 6 in sequence and then is connected to the mounting frame 4.

[0062] Furthermore, a mounting seat for mounting the movable pulley 6 is provided on the top of the fish collecting cage 7 .

[0063] Furthermore, the mounting frame 4 is fixedly mounted on a translation device 12 for driving the fish collecting cage 7 to move horizontally along the cantilever 2, and the translation device 12 is slidably mounted on the cantilever 2 of the bracket.

[0064] Furthermore, the translation device 12 adopts a trolley, and the trolley is suspended on the guide rail of the cantilever 2.

[0065] Furthermore, the support comprises a column 1 and a cantilever 2 fixed on the column 1. The column 1 can also be configured as a rotatable column 1.

[0066] Furthermore, the column 1 and the cantilever 2 are cross-arranged and welded, a cable is connected between the column 1 and the cantilever 2, and a connector for connecting with the cable is provided on the column 1 and the cantilever 2. Of course, the column 1 and the cantilever 2 may also be connected by reinforcing ribs without a cable.

[0067] Furthermore, the fish resource survey equipment of the present invention also includes an electric control box 11, and the lifting device, the fish outlet opening and closing mechanism, the camera 9, and the fish attracting light 8 are electrically connected to the electric control box 11 respectively.

[0068] Furthermore, the electric control box 11 is provided with a PLC and several contactors. The output end of the PLC is connected to one end of the contactor coil, and the other end of the contactor coil is connected to the power supply, and the power on or off of the contactor coil is controlled by the PLC. The contact of the contactor is connected in series between the motor and the power supply.

[0069] Specifically, the electric control box 11 is provided with a lifting control contactor, a travel control contactor and the like.

[0070] Furthermore, the input end of the PLC is connected to the hook lifting travel switch and the travel control travel switch.

[0071] Furthermore, the input terminal of the PLC may also be connected to a control button.

[0072] When the electric control box 11 receives an operation instruction from the staff, the electric control box 11 will control the operation of the electric hoist 3 and other components according to the operation instruction to realize the lifting function of the investigation equipment.

[0073] Furthermore, a bird-repelling device 10 is provided on the cantilever 2 of the support.

[0074] Embodiment 3

[0075] The present invention provides a fish resource survey system, including a flow meter for detecting the flow velocity of water in a water area and the fish resource survey device as described in the first embodiment, wherein the flow meter is electrically connected to an electric control box 11. The electric control box 11 is arranged on a bracket.

[0076] Furthermore, the fish resource survey system of the present invention also includes a wind speed sensor for detecting wind speed, and the wind speed sensor is electrically connected to the electric control box 11 .

[0077] When the water flow velocity in the water area exceeds the first set threshold, the fish collecting cage 7 is lifted by the lifting device. When the wind speed exceeds the second set threshold, the fish collecting cage 7 is placed in the water area. When the water flow velocity in the water area exceeds the first set threshold and the wind speed exceeds the second set threshold, the fish collecting cage 7 is horizontally moved to a place close to the column 1 by the translation device 12, so as to avoid the fish collecting cage 7 being damaged due to excessive water flow velocity or excessive wind speed.

[0078] Furthermore, the fish resource survey system of the present invention also includes a control host, and the electric control box 11 is communicatively connected with the control host.

[0079] The workflow of aquatic resource survey of the utility model: the fish resource survey is installed in the water area with relatively rich aquatic resources. When working, the water flow velocity in the water area is detected in advance by the flow meter. The next step of work can be carried out when it does not exceed the set flow velocity (limit 2.0m / s). The fish collecting cage 7 is lowered to the target water area, and the fish attracting light 8 is turned on to attract the fish to the vicinity of the fish collecting cage 7, and enter the inside of the fish collecting cage 7 through the conical fish collecting mouth. The conical fish collecting mouth plays the role of preventing escape. After the set time is reached, the lifting device is automatically turned on to lift the fish collecting cage 7 to the set position. The camera 9 is extended into the inside of the fish collecting cage 7. The camera 9 is turned on to take pictures of the fish resources inside the fish collecting cage 7. The pictures are transmitted to the background by the remote data transmission module for intelligent fish identification, and then the data processing and analysis platform performs data processing and analysis to form a survey report. The platform automatically issues a release signal remotely, controls the opening of the fish outlet below the fish collecting cage 7, releases the fish, and automatically closes the fish outlet after a certain time delay. The fish collecting cage 7 enters the working position again to carry out the next workflow. When the current meter detects that the water velocity in the water area exceeds the set velocity (limit 2.0m / s), the risk avoidance program is automatically started, and the lifting device is started to lift the fish collecting cage 7 to a safe height.

[0080] When the electric hoist 3 receives the instruction from the electric control box 11, the electric hoist 3 starts to work, and the motor of the electric hoist 3 drives the lifting rope to move up and down, thereby driving the fish collecting cage 7 to move up and down. When the motor of the electric hoist 3 drives the wire rope to move up and down, the guide rail provides the correct route for the rope to ensure stability during the lifting process. When the fish collecting box descends to the target water area every day, the flow rate of the water flow in the water area is first detected by the current meter. If it does not exceed the set flow rate, the fish collecting cage 7 can be placed in the predetermined water area. After taking pictures of the collected results in the fish collecting cage 7, the fish collecting cage 7 descends. When it is at a certain distance from the water surface, the release mechanism is then started to automatically release the fish in the fish collecting cage 7 back to the water area. When the fish collecting cage 7 and the fish attracting lamp 8 are working, the wire rope is used to fix and support the fish collecting cage 7 and the fish attracting lamp 8 to maintain the stability of the fish collecting cage 7 and the fish attracting lamp 8. When the fish collecting cage 7 descends to the target water area, the fish attracting lamp 8 can be turned on to attract the fish to the vicinity of the fish collecting cage 7. When the fish collecting cage 7 is lifted to the set position, the camera 9 takes pictures of the fish resources collected inside the fish collecting cage 7, and transmits the pictures to the background through the remote data transmission module for intelligent fish identification, and then the background software performs data processing and analysis.

[0081] The bird-repelling device 10 may be a wind-powered bird-repelling device 10 . When wind blows toward the wind-powered bird-repelling device 10 , the blades will start to rotate, and the reflectors on the blades will reflect sunlight to achieve the effect of repelling birds.

[0082] The lifting device of the utility model adopts the electric hoist 3 to ensure the smooth lifting of the survey equipment, avoid shaking or tilting during the lifting process, and has a long service life.

[0083] The cantilever 2 of the utility model is fixed on the column 1. When the survey device is in operation, the supporting effect of the fixed column 1 makes the entire survey device more stable during lifting and operation, reduces the possibility of shaking and tilting, and ensures that the survey device will not collapse or move due to external forces during operation.

[0084] The design of the fish collecting cage 7 of the utility model can reduce the damage to the fishes during the collection process, and ensure that the fishes remain in a healthy state during the collection process.

[0085] The electric control box 11 of the utility model can realize the control of the entire lifting device, thereby improving the operating efficiency.

[0086] The utility model releases fish in time through the fish outlet opening and closing mechanism, i.e., the releasing mechanism, thereby reducing the impact of survey activities on the fish ecology, ensuring that the fish can still survive after data collection, and helping to maintain ecological balance.

[0087] The fish attracting lamp 8 of the utility model can effectively attract fish by emitting specific light, thereby improving the efficiency of collecting fish in the fish collecting cage 7.

[0088] The device uses a three-color fish attracting light 8 to attract the target fish into the fish collecting cage 7. After the fish are collected, the fish collecting cage 7 is automatically lifted to the set position, and then the aquatic ecological survey of the target water area is collected in real time and efficiently through the high-precision intelligent video recognition system. The utility model can automatically sink and float to catch fish at a fixed time, and with the help of the camera 9 and the background fish intelligent recognition platform, it can realize the process of fully automatic fishing, counting and releasing, which is more efficient and intelligent than the traditional manual on-site fishing operation.

[0089] The utility model is provided with a bird-repelling device 10 to reduce the contact between birds and the survey equipment, effectively prevent birds from staying or nesting in the survey equipment, and reduce the risks caused by bird activities.

[0090] The fish resource survey system is also equipped with a flow meter. When the water flow rate exceeds the set threshold, the fish resource survey equipment controls the lifting device to quickly lift the fish collecting cage 7 and other electronic equipment to a high place to prevent the fish resource survey equipment from being destroyed by excessive water flow rate.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fish collecting cage, comprising a fish collecting cage body, wherein the fish collecting cage body is provided with a fish collecting port and a fish outlet, wherein the fish outlet is provided with a fish outlet opening and closing mechanism, wherein: The top of the fish collecting cage body is provided with an opening for allowing the camera to extend into the inner cavity of the fish collecting cage body.

2. The fish collecting cage according to claim 1, characterized in that: The top and side walls of the fish collecting cage body are both provided with a plurality of fish collecting openings.

3. The fish collecting cage according to claim 1 or 2, characterized in that: The fish collecting mouth of the fish collecting cage body is provided with a conical cylinder, the diameter of which gradually decreases from the outside to the inside, the large diameter end of the conical cylinder is connected to the outer wall of the fish collecting cage body, and the small diameter end of the conical cylinder extends inwardly to the inner cavity of the fish collecting cage body.

4. The fish collecting cage according to claim 3, characterized in that: A plurality of mesh holes are arranged on the side wall of the conical cylinder.

5. A fish resource survey device, characterized in that: The invention comprises a camera for photographing fish resources inside a fish collecting cage and a lifting device for lifting the fish collecting cage, and the fish collecting cage as claimed in any one of claims 1 to 4, wherein the lifting device and the camera are mounted on a bracket, the fish collecting cage is connected to the lifting device, and a fish attracting light is arranged in the inner cavity of the fish collecting cage.

6. The fish resource survey device according to claim 5, characterized in that: The camera is suspended on the bracket through a fixing piece. When the fish collecting cage is lifted to a set position, the camera extends from the opening into the inner cavity of the fish collecting cage.

7. The fish resource survey device according to claim 5 or 6, characterized in that: The lifting device comprises an electric hoist, the fish collecting cage is connected to the electric hoist through a steel wire rope, and the electric hoist is installed on a bracket.

8. The fish resource survey device according to claim 7, characterized in that: The lifting device also includes at least one group of movable pulleys for cooperating with the wire rope of the lifting device and fixed pulleys corresponding to each group of movable pulleys. Each group of movable pulleys includes at least one movable pulley. The movable pulley is rotatably mounted on the top of the fish collecting cage. The wire rope of the electric hoist passes through the corresponding upper end of the fixed pulley and the lower end of the movable pulley in sequence and is connected to the mounting frame or bracket. The fixed pulley is mounted on the mounting frame or bracket, and the mounting frame is mounted on the bracket.

9. The fish resource survey device according to claim 8, characterized in that: The mounting frame is fixedly mounted on a translation device used for driving the fish collecting cage to move horizontally along the cantilever, and the translation device is slidably mounted on the cantilever of the bracket.

10. The fish resource survey device according to claim 5, characterized in that: It also includes an electric control box, and the lifting device, the fish outlet opening and closing mechanism, the camera, and the fish attracting light are electrically connected to the electric control box respectively.

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