Modular fish lifting device and control method thereof

Abstract

This invention discloses a modular fish-lifting device and its control method, including a fish-collecting channel mechanism, a track, a fish-driving mechanism, and a fish-driving fence assembly. One end of the track extends out of the fish-collecting channel mechanism and is connected to an end mounting rod. The other end of the fish-collecting channel mechanism is provided with a lifting bracket. Below the lifting bracket is a liftable fish-collecting hopper, and below the fish-collecting channel mechanism, corresponding to the fish-collecting hopper, is a recessed space. A synchronous movement control mechanism is also provided between the lifting bracket, the vertical assembly, the horizontal assembly, and the end mounting rod. This fish-lifting device, through its modular structure, facilitates overall installation and disassembly, and can be quickly expanded and assembled according to actual conditions. Each mechanism can not only be independently assembled and disassembled, but also work together after assembly. One device can simultaneously complete the operations of driving, collecting, and lifting fish.

Description

Technical Field

[0001] This invention relates to the field of fish passage facilities in water conservancy projects, specifically to a modular fish lifting device and its control method. Background Technology

[0002] Currently, fish passage facilities in water conservancy projects mainly include fish lifts, fish channels, fish locks, and fish collection and transport vessels. Different fish passage facilities have their own characteristics. Among them, the advantages of fish lifts are that they are less sensitive to changes in upstream water levels, and fish consume less energy when passing through the dam. They are suitable for bottom-dwelling fish to pass through the dam and can realize continuous passage of fish through the dam, so they are also widely used.

[0003] However, the current fish lifts also have some obvious drawbacks. The existing fish lift systems basically require the installation of the fish lift system equipment on the foundation of the civil engineering concrete frame, which requires a large investment and involves coordination of civil engineering and equipment professional design and construction. There is a lot of communication in the early design and a lot of cross construction in the later stage. At the same time, the existing fish lift systems are not easy to disassemble. Once built, they are permanent building equipment, which is difficult to disassemble, transport and reuse. Even if they can be disassembled, it is very difficult.

[0004] Furthermore, the current fish lift system has a complex structure. The fish-driving grate requires a series of actions, including lifting the grabbing beam and inserting and removing pins. These actions require the assistance of electrical and hydraulic systems for control. If any part of the system malfunctions, the fish lift will not operate normally. Moreover, the control of the current fish lift is also complex. The movement control of the fish lift and the lifting control of the fish collection bucket both require separate operation, which is cumbersome. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a modular fish-lifting device and control method.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A modular fish-lifting device includes a fish-collecting channel mechanism with a track on it. A movable fish-driving mechanism is mounted on the track. The fish-driving mechanism includes a horizontal component that reciprocates along the fish-collecting direction. A vertical component is located on one side of the horizontal component, and a liftable fish-driving grid component is mounted on the vertical component. One end of the track extends out of the fish-collecting channel mechanism and is connected to an end mounting rod. The other end of the fish-collecting channel mechanism has a lifting bracket. A liftable fish-collecting hopper is located below the lifting bracket, and a recessed space is provided below the fish-collecting channel mechanism corresponding to the fish-collecting hopper. A synchronous movement control mechanism is also provided between the lifting bracket, the vertical component, the horizontal component, and the end mounting rod.

[0008] This modular fish-lifting device uses a modular structure to set up the fish-collecting channel mechanism, the fish-driving mechanism, and the fish-collecting bucket, which facilitates the overall installation and disassembly. It can be quickly expanded and built according to the actual situation. Each mechanism can not only be assembled and disassembled independently, but also work together after being built. One set of devices can simultaneously complete the operations of driving, collecting, and lifting fish, which is beneficial for fish to cross the dam.

[0009] The fish-collecting channel mechanism is the main area for driving fish. The track above it facilitates the movement of the fish-driving mechanism. Through the cooperation of the horizontal and vertical components, the fish-driving mechanism allows the height of the fish-driving grid component to decrease as it moves towards the fish-collecting bucket, thereby driving fish into the fish-collecting channel. When the fish-driving mechanism moves towards the front end (opening direction) of the fish-collecting channel mechanism, the fish-driving grid component will rise to open the channel, allowing fish to enter.

[0010] The sinking space is provided below the fish collection channel mechanism, which ensures that the fish collection bucket does not exceed the bottom of the fish collection channel mechanism when it descends to the lowest position, reducing obstacles and facilitating fish to swim to the top of the fish collection bucket. This ensures that the fish in the fish collection channel can be gathered in the fish collection bucket area under the guidance of the fish-driving fence. During the upward movement of the fish collection bucket, the fish above it can be concentrated and transported upward.

[0011] Furthermore, the fish collection channel mechanism is a box structure, which includes an open upper surface and an open side wall. A debris barrier is provided on the side wall opposite to the open side wall. The open side wall and the debris barrier are located at opposite ends in the length direction. The bottom of the box structure near the debris barrier is provided with a sunken space. The open upper surface is also provided with the track.

[0012] The main body of the box structure is connected by multiple detachable joints for easy assembly; the debris barrier is installed at the rear end of the fish collection channel mechanism to intercept river impurities and prevent debris from interfering with the activity of fish in the fish collection channel.

[0013] Furthermore, the box structure is equipped with several adjustable support feet at its bottom, and the portion of the track extending out of the box structure is also provided with diagonal supports. The bottom and the two side walls in the width direction of the box structure are mesh structures. The adjustable support feet facilitate leveling of the module in uneven water conditions. The extended front end of the track allows the fish-driving grate assembly to be moved to the very front of the box structure, ensuring that all fish in the fish-collecting channel are driven away by the fish-driving grate assembly and do not escape from the front end of the fish-collecting channel.

[0014] Furthermore, the horizontal component includes a movable plate, with multiple traveling pulleys below the movable plate and the traveling pulleys being mounted on the track; the vertical component is connected and installed on the side of the movable plate near the lifting bracket, and a first pulley group is provided on the upper part of the movable plate at a position away from the vertical component.

[0015] Furthermore, the vertical component includes a lifting frame, within which a liftable lifting connecting plate is provided, and the fish-driving fence component is provided on the lifting connecting plate; a second pulley group is provided above the lifting frame, and an auxiliary bracket is also provided on the side of the lifting frame facing away from the horizontal component, with a third pulley group provided on the auxiliary bracket.

[0016] Furthermore, the fish-driving grate assembly includes a back plate connected to the vertical assembly, and the back plate is provided with a fish-driving grate body, the height of which is not less than half the height of the fish-collecting channel mechanism.

[0017] Furthermore, the lifting support includes several support rods mounted on the fish collection channel mechanism. A support platform is mounted on each support rod, and a fish-driving grate moving winch and a fish-collecting bucket lifting winch are mounted on the support platform. The fish-collecting bucket lifting winch is connected to and drives the fish-collecting bucket, and the fish-driving grate moving winch is connected to and synchronously drives the horizontal assembly and the vertical assembly. An upper crossbar is also provided between a pair of support rods, and a pair of guide pulleys are mounted on the upper crossbar. A lower crossbar is provided between another pair of support rods, and a spring-loaded push rod is mounted on the lower crossbar.

[0018] Furthermore, the synchronous movement control mechanism includes a fish-driving fence moving winch mounted on the lifting bracket and a pair of guide pulley groups, a first pulley group on the horizontal assembly and a second and third pulley group on the vertical assembly, and a reversing pulley group mounted on the end mounting rod. The traction wire rope on the fish-driving fence moving winch passes through one of the guide pulley groups, then sequentially winds around the third pulley group, the lifting connecting plate on the vertical assembly, the second pulley group, and the first pulley group, before being redirected by the reversing pulley group and winding around another guide pulley group, returning to the fish-driving fence moving winch. The central axes of the first pulley group, the second pulley group, the third pulley group, and the guide pulley group are all arranged parallel to each other and perpendicular to the central axis of the reversing pulley group.

[0019] Furthermore, the fish collecting bucket has multiple water-filtering grids installed inside its side walls. A fish inlet is located near the bottom of one long side wall of the fish collecting bucket, and an openable self-closing gate is installed inside the fish inlet. The bottom of the fish collecting bucket has a sloping structure inclined towards the fish inlet. An arc-shaped guide plate is installed on the long side wall where the self-closing gate is located. Multiple lifting lugs are also provided at the top of the fish collecting bucket. The sloping bottom structure of the fish collecting bucket ensures that the fish inlet is the lowest point of the bucket. The self-closing gate is normally closed; under normal conditions, the gate is closed, and the fish collecting bucket collects the fish-water mixture. A mesh water-filtering grid is installed in the center of three hollowed-out areas on the outer perimeter of the fish collecting bucket to ensure that water is filtered out from the fish-water mixture during lifting, reducing the total weight of the mixture in the bucket.

[0020] A control method for a modular fish-lifting device includes the following steps:

[0021] Set the lifting and lowering height parameters of the fish collecting bucket in the PLC control unit;

[0022] The PLC control unit acquires the lifting height information of the fish collection bucket lifting winch, as well as the movement information of the fish driving fence assembly;

[0023] When the fish-driving grid moving winch is running, the fish-driving grid assembly moves towards the fish collection bucket while descending to drive the fish. When the fish-driving grid assembly touches the upper limit switch, the fish-driving grid moving winch temporarily stops, and the fish collection bucket lifting winch is triggered to run, lifting the fish collection bucket. When the fish collection bucket is lifted to the position, the fish release port in the fish collection bucket is mechanically triggered to open the self-closing gate, and the fish-water mixture flows through the fish trough to the temporary holding equipment for sorting.

[0024] After the fish-water mixture has flowed out, the fish collecting bucket moves back to its original position, and the fish driving grid moving winch runs again to return the fish driving grid assembly to its original position, completing a fish driving and collecting process.

[0025] Compared with the prior art, the beneficial effects of the present invention are: 1. The modular fish lifting device uses a modular structure to set up the fish collection channel mechanism, the fish driving mechanism, and the fish collection bucket, which facilitates the overall installation and disassembly. It can be quickly expanded and built according to the actual situation. Each mechanism can not only be assembled and disassembled independently, but also work together after being built. One set of devices can simultaneously complete the operations of driving, collecting, and lifting fish; 2. The fish driving mechanism, through the cooperation of the horizontal and vertical components, allows the height of the fish driving grid component to decrease as it moves towards the fish collection bucket, thereby achieving the purpose of driving fish in the fish collection channel; 3. Through a centralized control system and synchronization... 4. A sliding control mechanism can synchronously control and retract the fish-driving mechanism; 5. A sinking space is provided below the fish-collecting channel mechanism, ensuring that the fish-collecting bucket does not exceed the bottom of the fish-collecting channel mechanism when it descends to its lowest position, reducing obstacles and ensuring that the fish in the fish-collecting channel can be gathered into the fish-collecting bucket area under the driving force of the fish-driving gate; 6. The PLC control unit can be operated and display relevant information through a touch screen, receive the action signals of each limit switch, and issue corresponding running instructions to control the fish-driving mechanism and the fish-collecting bucket; 7. The coordinated arrangement of the spring push rod and the arc-shaped guide plate ensures that during the rising process of the fish-collecting bucket, the spring push rod pushes open the self-closing gate of the fish opening along the arc-shaped guide plate to automatically release the fish. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a modular fish-lifting device according to the present invention;

[0027] Figure 2 This is a perspective structural diagram of a modular fish-lifting device according to the present invention;

[0028] Figure 3 This is a schematic diagram of the support leg of a modular fish-lifting device according to the present invention;

[0029] Figure 4 This is a schematic diagram of the fish-driving component of a modular fish-lifting device according to the present invention;

[0030] Figure 5 This is a schematic diagram of the fish collection bucket of a modular fish lifting device according to the present invention;

[0031] Figure 6 This is a schematic diagram of the lifting bracket of a modular fish lifting device according to the present invention;

[0032] Figure 7 This is a three-dimensional structural diagram of a modular fish-lifting device according to the present invention. Figure 1 ;

[0033] Figure 8 This is a three-dimensional structural diagram of a modular fish-lifting device according to the present invention. Figure 2 ;

[0034] Figure 9 This is an overall control flowchart of a modular fish-lifting device according to the present invention;

[0035] Figure 10 This is a flowchart of a modular fish-lifting device control method according to the present invention;

[0036] In the diagram: 1. Fish collection channel mechanism; 101. Open sidewall; 102. Pollution barrier; 2. Support leg; 201. Support leg adjusting cylinder; 202. Support leg telescopic rod; 203. Pad; 204. Fixing pin; 205. Adjusting hole; 3. Track; 4. End mounting rod; 5. Reversing pulley block; 6. Moving plate; 7. Traveling pulley; 8. First pulley block; 9. Lifting frame; 10. Lifting connecting plate; 11. Fish-driving fence assembly; 1101. Back plate; 1102. Fish-driving fence body; 12. Second pulley block; 13. Auxiliary support; 14. Third pulley block; 15. Traction wire rope; 1501. 1502. Upward traction wire rope; 16. Fish collection bucket; 1601. Filter screen; 1602. Fish release inlet; 1603. Self-closing gate; 1604. Sloping structure; 1605. Arc-shaped guide plate; 1606. Lifting lug; 17. Lifting bracket; 1701. Support rod; 1702. Support platform; 1703. Upper crossbar; 1704. Lower crossbar; 18. Fish collection bucket lifting winch; 19. Fish drive screen moving winch; 20. Guide pulley block; 21. Spring push rod; 22. Downward limit switch; 23. Upward limit switch; 24. Upward limit switch; 25. Fish guide trough. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] like Figures 1 to 8As shown, a modular fish-lifting device includes a fish-collecting channel mechanism 1, a track 3 on the fish-collecting channel mechanism 1, and a movable fish-driving mechanism on the track 3. The fish-driving mechanism includes a horizontal component that reciprocates along the fish-collecting direction, a vertical component on one side of the horizontal component, and a liftable fish-driving grid component 11 on the vertical component. One end of the track 3 extends out of the fish-collecting channel mechanism 1 and is connected to an end mounting rod 4. The other end of the fish-collecting channel mechanism 1 is provided with a lifting bracket 17. Below the lifting bracket 17 is a liftable fish-collecting bucket 16. A sinking space is provided below the fish-collecting channel mechanism 1 corresponding to the fish-collecting bucket 16. A synchronous movement control mechanism is also provided between the lifting bracket 17, the vertical component, the horizontal component, and the end mounting rod 4.

[0040] This modular fish lifting device uses a modular structure to set up the fish collection channel mechanism 1, the fish driving mechanism, and the fish collection bucket 16, which facilitates the overall installation and disassembly. It can be quickly expanded and built according to the actual situation. Each mechanism can not only be assembled and disassembled independently, but also work together after being built. One set of devices can simultaneously complete the operations of driving, collecting, and lifting fish.

[0041] The fish-collecting channel mechanism 1 is the main area for driving fish. The track 3 above it facilitates the movement of the fish-driving mechanism. Through the cooperation of the horizontal and vertical components, the fish-driving mechanism allows the height of the fish-driving fence assembly 11 to decrease as it moves towards the fish-collecting bucket 16, thereby driving fish into the fish-collecting channel. When the fish-driving mechanism moves towards the front end (opening direction) of the fish-collecting channel mechanism, the fish-driving fence assembly will rise to open the channel and allow fish to enter.

[0042] The lifting bracket 17 serves two purposes: firstly, it forms a frame platform above the fish collection channel mechanism 1 to accommodate a winch for driving the fish collection bucket 16, and also creates a space above it to hold the fish collection bucket. When the fish collection bucket 16 rises to its highest point, fish can be released. Secondly, the lifting bracket 17 can be equipped with a synchronous movement control mechanism to synchronously raise and lower the fish-driving mechanism.

[0043] The sinking space is provided below the fish collection channel mechanism 1, which allows the fish collection bucket 16 to be lower than the bottom of the fish collection channel mechanism 1 when it descends to the lowest position, reducing obstacles and facilitating fish to swim to the top of the fish collection bucket. This ensures that the fish in the fish collection channel can be gathered in the fish collection bucket area under the drive of the fish-driving fence. During the upward movement of the fish collection bucket, the fish above it can be concentrated and transported upward.

[0044] This modular fish-lifting device also includes a centralized control cabinet, which can be installed in a control room above the water surface. The centralized control cabinet is equipped with a PLC control unit, which can be operated and display relevant information through a touch screen, receive action signals from each limit switch, and issue corresponding operating instructions to control the fish-driving mechanism and the fish-collecting bucket.

[0045] Furthermore, the fish collection channel mechanism 1 is a box structure, which includes an open upper surface and an open side wall 101. A debris barrier 102 is provided on the side wall opposite to the open side wall 101. The open side wall 101 and the debris barrier 102 are respectively located at both ends in the length direction. The bottom of the box structure near the debris barrier is provided with the sunken space, and the open upper surface is also provided with the track 3.

[0046] The open-type box structure has an open upper section with walking tracks installed on both sides to facilitate the movement of the fish-driving grate assembly. The main body of the box structure is connected by multiple detachable joints for easy assembly. The debris barrier 102 is installed at the rear end of the fish collection channel mechanism to intercept river impurities and prevent debris from interfering with the fish activity in the fish collection channel.

[0047] Furthermore, the box structure is provided with several adjustable support feet 2 below, and the part of the track 3 extending out of the box structure is also provided with diagonal support between it and the box structure. The bottom and the two side walls in the width direction of the box structure are mesh structures.

[0048] The adjustable support feet allow for easy leveling of the module in uneven water conditions; combined with Figure 3 As shown, the upper part of the support leg 2 is welded to the bottom of the fish collection channel mechanism and is a support leg adjustment cylinder 201, which is in the form of a fixed pin with an opening. The lower part is a support leg telescopic rod 202 with sequentially arranged adjustment holes 205. The bottom of the support leg telescopic rod 202 is a pad 203. The length of the support leg 2 can be adjusted by passing the fixed pin 204 through the corresponding adjustment hole 205, which facilitates the fixing of the modular fish lifter in the water and the leveling of its horizontal position.

[0049] The front end of the track 3 is extended and extends out of the box structure, which allows the fish-driving fence assembly 11 to move to the front end of the box structure, ensuring that all fish in the fish collection channel can be driven away by the fish-driving fence assembly 11 and will not escape from the front end of the fish collection channel.

[0050] An upward limit switch 23 is arranged on both the left and right sides near the lifting area of ​​the fish collection hopper 16 on the track 3. When the fish-driving mechanism moves upward toward the fish collection hopper and reaches the position of the upward limit switch 23, the fish-driving mechanism collides with the limit switch, and the upward limit switch 23 sends a signal that the fish-driving mechanism has reached its upward position. Upward refers to moving toward the fish collection hopper, and downward refers to moving toward the front opening of the fish collection channel mechanism.

[0051] A downward limit switch 22 is installed on the end rod 4 at the front end of the extended structure of the track 3. When the fish-driving mechanism moves downward toward the front end of the fish-collecting channel and reaches the position of the downward limit switch 22, the front end of the fish-driving mechanism collides with the downward limit switch 22, and the limit switch sends a signal that the fish-driving mechanism has reached its downward position.

[0052] The upward and downward limit switches arranged on the fish collection channel mechanism 1 are easy to install and connect. They can be connected via quick connectors. When the fish collection channel mechanism is expanded, the limit signal transmission function can be easily realized.

[0053] Furthermore, the horizontal component includes a movable plate 6, with a plurality of traveling pulleys 7 below the movable plate 6, the traveling pulleys 7 being mounted on the track 3; the vertical component is connected and installed on the side of the movable plate 6 near the lifting bracket 17, and a first pulley group 8 is provided on the upper part of the movable plate 6 at a position away from the vertical component.

[0054] The mobile flat plate 6 can move along the track 3 through the walking pulley 7, thereby driving the vertical component, namely the fish-driving fence component 11, to move together; the first pulley group 8 provided on the mobile flat plate 6 can be connected to the traction steel wire rope.

[0055] Furthermore, the vertical component includes a lifting frame 9 connected to one side of the mobile flat plate 6. The lifting frame 9 has a liftable lifting connecting plate 10 inside, and the fish-driving fence component 11 is provided on the lifting connecting plate 10. A second pulley group 12 is provided above the lifting frame 9, and upper limit switches 24 are provided on both sides above. An auxiliary bracket 13 is also provided on the side of the lifting frame 9 facing away from the horizontal component, and a third pulley group 14 is provided on the auxiliary bracket 13.

[0056] The lifting connecting plate 10 can move up and down within the lifting frame 9. The traction steel wire rope 15 is connected to the connecting fastening point on the lifting connecting plate 10 through the second pulley group 12 at the top of the lifting frame. The lifting connecting plate 10 is connected to the fish-driving fence assembly 11. The lifting connecting plate 10 has a hollow structure, and the inner side of the lifting frame 9 is provided with a sliding groove. Both sides of the lifting connecting plate 10 are installed in the sliding groove.

[0057] Both the first pulley block 8 and the third pulley block 14 can guide the traction wire rope. Under the traction of the traction wire rope, the moving plate can move horizontally back and forth, and the lifting connecting plate can move up and down.

[0058] Furthermore, the fish-driving fence assembly 11 includes a back plate 1101 connected to the lifting connecting plate 10 of the vertical assembly. The back plate 1101 is provided with a fish-driving fence body 1102, and the height of the fish-driving fence body 1102 is not less than half the height of the fish-collecting channel mechanism 1.

[0059] Furthermore, the lifting bracket 17 includes several support rods 1701 mounted on the fish collection channel mechanism 1. A support platform 1702 is provided on the support rods 1701. A fish-driving grid moving winch 19 and a fish-collecting bucket lifting winch 18 are provided on the support platform 1702. The fish-collecting bucket lifting winch 18 is connected to and drives the fish-collecting bucket 16. The fish-driving grid moving winch 19 is connected to and synchronously drives the horizontal component and the vertical component. An upper crossbar 1703 is also provided between the pair of support rods 1701 at the front. A pair of guide pulley groups 20 are provided on the upper crossbar 1703. A lower crossbar 1704 is provided between the pair of support rods 1701 at the rear. A spring push rod 21 is provided on the lower crossbar 1704.

[0060] Furthermore, the fish collecting hopper 16 has multiple water filter grids 1601 inside its side wall, a fish release port 1602 is provided near the bottom of one long side wall of the fish collecting hopper 16, an openable self-closing gate 1603 is provided inside the fish release port 1602, a ramp structure 1604 inclined towards the fish release port is provided at the bottom of the fish collecting hopper 16, an arc-shaped guide plate 1605 is provided on the long side wall where the self-closing gate 1603 is located, and multiple lifting lugs 1606 are also provided above the fish collecting hopper 16.

[0061] The lifting lug 1606 can be connected to the wire rope of the hoisting winch 18 for fixing the fish collecting bucket, and the bucket is hoisted using the wire rope. The bottom structure of the fish collecting bucket 16 is sloping, ensuring that the fish outlet 1602 is the lowest point of the bucket. The self-closing gate 1603 is normally closed; under normal conditions, the gate is closed, and the fish collecting bucket 16 collects the fish-water mixture. A mesh filter grid 1601 is installed in the center of three sides of the fish collecting bucket 16 to ensure that water is filtered out from the fish-water mixture during the hoisting process, reducing the total weight of the mixture in the bucket.

[0062] The arc-shaped guide plate 1605 on the upper edge of the fish collecting bucket 16 is designed to cooperate with the spring push rod 21 to ensure that during the rising process of the fish collecting bucket, the spring push rod 21 pushes the self-closing gate 1603 that opens the fish mouth along the arc-shaped guide plate 1605.

[0063] The fish collection bucket lifting winch 18 is also equipped with a load sensor, which can detect the total weight of the fish collection bucket 16 in real time, ensuring the safety of the fish collection bucket 16 during the lifting process. Simultaneously, the fish collection bucket lifting winch 18 is equipped with a corresponding electric brake mechanism, ensuring that the electric brake is only released when the winch is energized and rotating; under other circumstances, the electric brake is not allowed to be released, guaranteeing the safety of the fish collection bucket. A rotary encoder is installed coaxially on the fish collection bucket lifting winch 18. During the lifting of the fish collection bucket 16, the rotation of the coaxial rotary encoder measures the lifting and lowering height of the fish collection bucket.

[0064] The two drum mechanisms of the fish-driving fence mobile winch 19 are respectively connected to the upward traction steel wire rope 1501 and the downward traction steel wire rope 1502. The upward and downward traction steel wire ropes are wound in opposite directions. The two drum mechanisms rotate coaxially through a winch motor. That is, when the upward traction steel wire rope 1501 is wound and pulled up by the corresponding winch drum, the coaxial winch drum connected to the downward traction steel wire rope 1502 is unwinding the rope in the opposite direction. When the fish-driving fence mobile winch 19 is rotating forward, the upward winch drum pulls up the rope, the fish-driving fence assembly 11 moves upward, and the downward winch drum unwinds the rope; when the downward winch drum is rotating in reverse, the downward winch drum pulls up the rope, the fish-driving fence assembly 11 moves downward, and the upward winch drum unwinds the rope. This achieves synchronous winding and unwinding of the traction steel wire rope 15 during the entire movement of the fish-driving mechanism.

[0065] Furthermore, the synchronous movement control mechanism includes a fish-driving fence moving winch 19 and a pair of guide pulley groups 20 mounted on the lifting bracket 17, a first pulley group 8 on the horizontal assembly, a second pulley group 12 and a third pulley group 14 on the vertical assembly, and a reversing pulley group 5 mounted on the end mounting rod 4. The traction wire rope 15 on the fish-driving fence moving winch 19 passes through one of the guide pulley groups 20, then sequentially winds around the third pulley group 14, the lifting connecting plate 10 on the vertical assembly, the second pulley group 12 and the first pulley group 8, and then, after being reversing via the reversing pulley group 5, winds around another guide pulley group 20 and returns to the fish-driving fence moving winch 19. The central axes of the first pulley group 8, the second pulley group 12, the third pulley group 14 and the guide pulley group 20 are all arranged parallel to each other and perpendicular to the central axis of the reversing pulley group 5.

[0066] A pair of guide pulley blocks 20 are respectively set to the upper and lower drums on the fish-driving gate moving winch 19. Through the connection of the traction steel wire rope 15 and the first pulley block 8, the second pulley block 12, the third pulley block 14, the guide pulley block 20 and the reversing pulley block 5, a purely mechanical pulley traction structure pulled by steel wire rope can be formed above the fish collection channel mechanism 1. This structure is not only simple and easy to install, but also enables the synchronous movement of the fish-driving gate assembly and the lifting of the fish-driving gate assembly.

[0067] The reversing pulley block 5 is oriented differently from the other pulley blocks, allowing the traction wire rope 15 to change direction at the front end and then loop back, making the entire wire rope pulley block a single system controlled by the fish-driving fence moving winch. These pulley blocks can be rationally arranged using front-to-back positions, high-to-low positions, and adjacent staggered positions to form a cyclical traction system.

[0068] Furthermore, in combination Figure 9 and Figure 10 As shown, a control method for a modular fish-lifting device includes the following steps:

[0069] Set the lifting and lowering height parameters of the fish collecting bucket 16 in the PLC control unit;

[0070] The PLC control unit acquires the lifting height information of the fish collecting bucket lifting winch 18, as well as the movement information of the fish driving fence assembly 11;

[0071] When the fish-driving hoist mobile winch 19 is running, the fish-driving hoist assembly 11 moves towards the fish-collecting hopper 16 while descending to drive the fish. When the fish-driving hoist assembly 11 touches the upper limit switch 23, the fish-driving hoist mobile winch 19 temporarily stops, and the fish-collecting hopper lifting winch 18 is triggered to run, lifting the fish-collecting hopper 16. When the fish-collecting hopper 16 is lifted into place, the fish release port in the fish-collecting hopper 16 is mechanically triggered to open the self-closing gate 1603, and the fish-water mixture flows through the fish-sliding trough 25 to the temporary holding equipment for sorting.

[0072] After the fish-water mixture has finished flowing, the fish collecting bucket 16 moves back to its original position, and the fish driving fence moving winch 19 runs again to make the fish driving fence assembly 11 also return to its original position, completing a fish driving and collecting process.

[0073] Specifically, the centralized control cabinet simultaneously controls the fish-driving grate moving winch 19 and the fish-collecting bucket lifting winch 18. Its human-machine interface operation screen uses a large touch screen for display and operation. The touch screen and the PLC control unit are connected by a communication cable and can communicate using RS485 or RS232 communication.

[0074] The PLC control unit, as the core unit of the centralized control cabinet, is responsible for the data acquisition and processing of the entire fish lift system, as well as the function of issuing control commands.

[0075] Depend on Figure 9 As can be seen, the PLC control unit in the centralized control cabinet of the fish lifter system of the present invention can receive in real time fault signals from the motors of the moving winch of the fish-driving grid and the lifting winch of the fish collection bucket, and simultaneously detect the load detection signal of the lifting winch of the fish collection bucket from the load sensor. When a winch fault signal is issued, the fish lifter system stops working and issues an alarm, which is reflected through the human-machine interface and alarm indicator. When the system detects that the load sensor signal of the fish collection bucket exceeds the set value, the human-machine interface and alarm indicator will also provide corresponding prompts, and the system will stop working simultaneously. The alarm indicator can also issue an audible and visual alarm simultaneously.

[0076] Under the control of the centralized control cabinet, the fish-driving fence moving winch and the fish-collecting bucket lifting winch are controlled to perform forward and reverse rotation, realizing the upward and downward operation of the fish-driving fence assembly and the lifting and lowering operation of the fish-collecting bucket.

[0077] When the fish-driving fence assembly is moving downwards, upon encountering the downward limit switch, the limit switch sends a signal to the PLC control unit. Upon receiving this signal, the PLC control unit stops the moving winch. If the system is set to continue fish-driving operations, the moving winch reverses, and the fish-driving fence assembly moves upwards. Conversely, when the fish-driving fence assembly is moving upwards, upon encountering the upward limit switch, the limit switch sends a signal to the PLC control unit. Upon receiving this signal, the moving winch stops.

[0078] After the fish-driving fence assembly stops at its upward position, the fish-collecting bucket lifting winch can only perform lifting operations according to the system control. The fish-collecting bucket lifting winch detects the lifting and lowering height of the fish-collecting bucket through the encoder in the winch motor. By setting the position parameters of the highest and lowest lifting points, the fish-collecting bucket lifting winch stops when the fish-collecting bucket is lifted to the highest point and stops when the fish-collecting bucket is lowered to the lowest point.

[0079] The modular fish lifter's fish-driving grate mobile winch and fish-collecting bucket lifting winch are both concentrated on the equipment platform and controlled in the same centralized control cabinet. The centralized control cabinet can be operated from the shore, making it convenient for observation and operation.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular fish-lifting device, characterized in that, The system includes a fish-collecting channel mechanism with a track on which a movable fish-driving mechanism is mounted. The fish-driving mechanism includes a horizontal component that reciprocates along the fish-collecting direction, a vertical component on one side of the horizontal component, and a liftable fish-driving grid component on the vertical component. One end of the track extends out of the fish-collecting channel mechanism and is connected to an end mounting rod. The other end of the fish-collecting channel mechanism has a lifting bracket, and a liftable fish-collecting hopper is located below the lifting bracket. A recessed space is provided below the fish-collecting channel mechanism corresponding to the fish-collecting hopper. A synchronous movement control mechanism is also provided between the lifting bracket, the vertical component, the horizontal component, and the end mounting rod. The lifting support includes several support rods mounted on the fish collection channel mechanism. A support platform is mounted on each support rod. A fish-driving grate moving winch and a fish-collecting bucket lifting winch are mounted on the support platform. The fish-collecting bucket lifting winch is connected to and drives the fish-collecting bucket. The fish-driving grate moving winch is connected to and synchronously drives the horizontal assembly and the vertical assembly. An upper crossbar is also provided between a pair of support rods, and a pair of guide pulleys are provided on the upper crossbar. A lower crossbar is provided between another pair of support rods, and a spring-loaded push rod is provided on the lower crossbar. The fish collecting channel mechanism is also provided with several adjustable support feet below; the side wall of the fish collecting hopper is provided with multiple water filter grids, and a fish release port is provided near the bottom of one long side wall of the fish collecting hopper. The fish release port is provided with an openable self-closing gate. The bottom of the fish collecting hopper is provided with a ramp structure that slopes towards the fish release port. The fish collecting hopper is provided with an arc-shaped guide plate on the long side wall where the self-closing gate is located. The self-closing gate is normally closed. During the upward movement of the fish collecting hopper, the spring push rod pushes open the self-closing gate of the fish release port along the arc-shaped guide plate.

2. The modular fish-lifting device according to claim 1, characterized in that, The fish collection channel mechanism is a box structure, which includes an open upper surface and an open side wall. A debris barrier is provided on the side wall opposite to the open side wall. The open side wall and the debris barrier are located at opposite ends in the length direction. The bottom of the box structure near the debris barrier is provided with a sunken space. The open upper surface is also provided with a track.

3. The modular fish-lifting device according to claim 2, characterized in that, The box structure is provided with several adjustable support feet at the bottom, and the part of the track that extends out of the box structure is also provided with diagonal support between it and the box structure. The bottom and the two side walls in the width direction of the box structure are mesh structures.

4. The modular fish-lifting device according to claim 1, characterized in that, The horizontal component includes a movable plate with multiple traveling pulleys below it, which are mounted on the track. The vertical component is connected and installed on the side of the movable plate near the lifting bracket, and a first pulley group is provided on the upper part of the movable plate away from the vertical component.

5. The modular fish-lifting device according to claim 1, characterized in that, The vertical component includes a lifting frame, within which a liftable lifting connecting plate is provided, and the fish-driving fence component is provided on the lifting connecting plate; a second pulley group is provided above the lifting frame, and an auxiliary bracket is also provided on the side of the lifting frame facing away from the horizontal component, with a third pulley group provided on the auxiliary bracket.

6. The modular fish-lifting device according to claim 1, characterized in that, The fish-driving fence assembly includes a back plate connected to the vertical assembly, and the back plate is provided with a fish-driving fence body. The height of the fish-driving fence body is not less than half the height of the fish-collecting channel mechanism.

7. The modular fish-lifting device according to claim 1, characterized in that, The synchronous movement control mechanism includes a fish-driving fence moving winch mounted on the lifting bracket and a pair of guide pulley groups, a first pulley group on the horizontal assembly and a second and third pulley group on the vertical assembly, and a reversing pulley group mounted on the end mounting rod. The traction wire rope on the fish-driving fence moving winch passes through one of the guide pulley groups, then sequentially winds around the third pulley group, the lifting connecting plate on the vertical assembly, the second pulley group, and the first pulley group, before being redirected by the reversing pulley group and winding around another guide pulley group, returning to the fish-driving fence moving winch. The central axes of the first pulley group, the second pulley group, the third pulley group, and the guide pulley group are all arranged parallel to each other and perpendicular to the central axis of the reversing pulley group.

8. The modular fish-lifting device according to claim 1, characterized in that, The fish collecting container is also equipped with several hanging lugs on top.

9. A control method for a modular fish-lifting device according to any one of claims 1 to 8, characterized in that, Includes the following steps: Set the lifting and lowering height parameters of the fish collecting bucket in the PLC control unit; The PLC control unit acquires the lifting height information of the fish collection bucket lifting winch, as well as the movement information of the fish driving fence assembly; When the fish-driving grid moving winch is running, the fish-driving grid assembly moves towards the fish collection bucket while descending to drive the fish. When the fish-driving grid assembly touches the upper limit switch, the fish-driving grid moving winch temporarily stops, and the fish collection bucket lifting winch is triggered to run, lifting the fish collection bucket. When the fish collection bucket is lifted to the position, the fish release port in the fish collection bucket is mechanically triggered to open the self-closing gate, and the fish-water mixture flows through the fish trough to the temporary holding equipment for sorting. After the fish-water mixture has flowed out, the fish collecting bucket moves back to its original position, and the fish driving grid moving winch runs again to return the fish driving grid assembly to its original position, completing a fish driving and collecting process.

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