Fish migration dam-passing auxiliary system

Abstract

The invention relates to the field of fish ecology, in particular to a fish migration dam-passing auxiliary system which comprises a driving wheel and an annular cable, the two ends of the interior of the annular cable are sleeved with the driving wheel and a driven wheel respectively, a suspension box is fixedly arranged on the cable and comprises a fixing plate and a box body, the top end of the fixing plate is connected with a rope clip through a suspension rod, and the rope clip is fixedly connected with the cable. The lower portion of the fixing plate is connected with a box through a lifting assembly, the box is of a hollow structure with the bottom open, a communicated sliding groove is formed in one inner wall of the box and the bottom box wall, a supporting plate is slidably installed in the sliding groove, the two sides of one end of the supporting plate are connected with the two ends of a chain respectively, and the chain is driven by a chain wheel and a chain wheel motor. The chain drags the supporting plate to move to the opening in the bottom of the box body from the inner wall of the box body through the sliding groove to achieve blocking. Trapped fish schools migrated to the dam are transferred to a target water area through the box body, the fish school migration success rate is increased, and the number and variety diversity of the fish schools are maintained; oxygen is automatically supplied into the running box body, so that the survival rate of fish schools is ensured.

Description

Technical Field

[0001] The invention relates to fish protection in water conservancy projects, and in particular to a fish migration over-dam auxiliary system, belonging to the field of water conservancy projects. Background Art

[0002] In fish ecology, migration is a crucial part of the fish life cycle, involving multiple ecological behaviors such as reproduction, foraging, and avoiding cold. However, with the continuous expansion of human activities, especially the construction of water conservancy projects such as dams, the path of fish migration has been blocked, posing a great challenge to the survival and reproduction of fish.

[0003] Fish often encounter obstacles such as dams during their migration. Existing dam facilities cannot fully guarantee the safety and efficient passage of fish, resulting in a decrease in fish populations and destruction of their habitats.

[0004] Chinese patent document CN115821868B discloses a fish-assisted migration device. The invention discloses a fish-assisted migration device, which belongs to the field of fish ecological technology, and includes a migration device inlet unit, a flexible pipe and a migration device outlet unit connected in sequence. The invention can achieve the dam swimming of fish by negative pressure attraction through the mutual cooperation of a negative pressure generating device, a one-way fish mouth, a flexible pipe and other devices. This attraction method is less harmful to fish, more conducive to the survival of individual fish during migration, and has a beneficial effect on the natural ecology in the river. Under certain circumstances, it can promote local environmental protection construction; the invention has seasonal working characteristics. In the non-migratory season or when the dam is discharging flood, the device can be evacuated from the dam to other locations, and redeployed at the dam in the migratory season or other situations where the device needs to work, and has strong mobility; at the same time, the invention can be inspected and maintained in a non-dam environment, and the maintenance difficulty is small.

[0005] In the prior art, fish migrate through fish ladders, and humans have no intervention measures for trapped fish that migrate over dams, which reduces the success rate of fish migration and reduces the number and diversity of fish populations. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a fish migration over the dam auxiliary system, which moves the trapped fish migrating over the dam to the target waters through a box, thereby increasing the success rate of fish migration and maintaining the number and diversity of fish species; and automatically supplies oxygen to the inside of the operating box to ensure the survival rate of the fish. In order to achieve the above purpose, the present invention adopts the following technical solutions: A fish migration over a dam auxiliary system comprises a driving wheel connected to a power device, and a circular cable installed above the fishway, wherein the driving wheel and the driven wheel are respectively sleeved at the two ends of the circular cable, and a suspension box is fixed on the cable, wherein the suspension box comprises a fixed plate and a box body, the top of the fixed plate is connected to a cable gripper through a suspension rod, the cable gripper is fixedly connected to the cable, and the bottom of the fixed plate is connected to the box body through a lifting assembly, and the box body is a hollow structure with an opening at the bottom, and a connecting slide groove is provided at an inner wall of the box body and a bottom box wall, and a support plate is slidably installed in the slide groove, and the two sides of one end of the support plate are respectively connected to the two ends of the chain, and the chain is driven by a sprocket and a sprocket motor, and the chain pulls the support plate from the inner wall of the box body through the slide groove to the bottom opening of the box body for sealing.

[0007] As a preferred technical solution of the present invention, the lifting assembly includes two sets of lifting motors symmetrically arranged at the diagonals of the fixed plate, and the lifting motors are equipped with threaded rods, which are connected to the box wall of the box body by screwing; the other two sets of diagonals of the fixed plate are slidably connected to the box wall of the box body by sliding rods.

[0008] As a preferred technical solution of the present invention, the slide groove includes a first slide groove, a second slide groove, a third slide groove and a fourth slide groove. The first slide groove and the second slide groove are located on both sides of an inner wall of the box body and are symmetrically arranged. The slide groove includes two vertically opened notches, and the two notches are connected to each other; the third slide groove and the fourth slide groove are located on both sides of the bottom of the box body and are symmetrically arranged. The slide groove includes two vertically opened notches, and the two notches are connected to each other; the first slide groove is connected to the third slide groove through an arc groove, and the second slide groove is connected to the fourth slide groove through an arc groove.

[0009] As a preferred technical solution of the present invention, the pallet includes a first pallet, a second pallet and a third pallet which are installed in sequence, both ends of the pallets are installed in slide grooves on both sides of the box body through rollers, the sides of the pallets close to the inner wall of the box body are connected to each other through ring ropes, and adjacent pallets are detachably connected through tenons and dovetail grooves; a guide rod is fixed on the roller on the upper end of the first pallet, and the guide rod is hinged to one end of the oblique rod toward the side inside the box body, and the other end of the oblique rod is hinged to the guide block, the guide block is hinged to the roller at the bottom end of the third pallet, and the guide block is slidably installed in the third slide groove.

[0010] As a preferred technical solution of the present invention, the sprocket includes a power sprocket, a first steering sprocket and a second steering sprocket, and the sprocket motor is installed with a power sprocket; a second steering sprocket is arranged at an end of the third slide groove away from the first slide groove, a chain is fixed on the guide block, and the free end of the chain extends vertically to the top of the box body after changing direction through the second steering sprocket; the chain is connected to the power sprocket and then changes direction through the first steering sprocket on the top of the box body, and the chain after changing direction is fixedly connected to the guide rod.

[0011] As a preferred technical solution of the present invention, a cylinder is fixedly arranged on one side of the cable gripper, a piston is installed in the cylinder, a one-way valve is arranged on the piston, and the bottom of the cylinder is connected to the inside of the box through an air pipe; a support block is fixedly arranged on the other side of the cable gripper, a strut is arranged on the support block along the direction of the cable, a rotating shaft is installed on one end of the strut extending outward, a rotating wheel is fixedly installed on one end of the rotating shaft close to the cylinder, the rotating wheel is located above the cable, an eccentric rod is fixedly arranged on one side of the rotating wheel close to the cylinder, a connecting rod is rotatably connected on the eccentric rod, and the other end of the connecting rod is hinged to the piston; an end of the rotating shaft away from the cylinder extends to the adjacent cable and a driving wheel is fixedly arranged on the end.

[0012] As a preferred technical solution of the present invention, a through groove is opened in the support block along the direction of the cable, the support rod is installed in the through groove and can slide up and down, and a spring is installed at the bottom of the through groove; 4 limit rods are installed on the support block, and the limit rods are located on both sides of the support rod; a movable groove is opened vertically in the direction away from the cylinder barrel in the through groove, and a pressure plate is provided in the movable groove, the pressure plate is fixedly connected to the support rod, a traction wire is fixedly connected to the pressure plate, and the traction wire is connected to the trigger assembly after passing through multiple changing wheels.

[0013] As a preferred technical solution of the present invention, the trigger assembly includes a lever fixed on the threaded rod, a sliding plate slidably arranged on the side wall of the fixed plate, and the sliding plate is arranged adjacent to the lever; an L-shaped hook is fixed on one end of the sliding plate adjacent to the lever, the L-shaped hook is connected to the lever assembly, the end of the sliding plate away from the lever is fixedly connected to the traction wire, and the end of the sliding plate away from the lever is installed on the side wall of the fixed plate through a second tension spring; the lever assembly includes a web rod rotatably arranged on the side wall of the fixed plate, the web rod is arranged along the direction of the sliding plate, the pivot of the web rod is located at the end away from the L-shaped hook, and the side of the web rod away from the lever is connected to the fixed plate through a first tension spring; the end of the web rod adjacent to the L-shaped hook extends to both sides to form a wing rod, one end of the wing rod is connected to the L-shaped hook by a slidable pulling method, and the other end of the wing rod extends toward the direction of the lever, and the extended wing rod is moved by the rotating lever.

[0014] As a preferred technical solution of the present invention, T-slots are provided on the first boss and the second boss at the bottom of the box body. The T-slots are wide inside and narrow at the opening. A first sealing strip is installed in the T-slot of the boss. The first sealing strip is two double T-structures vertically connected to each other. One T-structure of the first sealing strip is installed in the T-slot of the boss, and the other T-structure of the first sealing strip seals and fills the gap between the boss and the support plate; a tenon is provided at one end of the support plate, a T-slot is provided at the end of the second support plate away from the tenon, and a T-slot is provided at the end of the third support plate away from the box body, and a second sealing strip is installed in the T-slot of the support plate; the second sealing strip is two double T-structures vertically connected to each other, one T-structure of the second sealing strip is installed in the T-slot of the support plate, and the other T-structure of the second sealing strip seals and fills the gap between two adjacent support plates, and a groove 604 matching the tenon is provided on the second sealing strip, and the tenon is inserted into the groove of the adjacent second sealing strip.

[0015] As a preferred technical solution of the present invention, the first sealing strip and the second sealing strip are both made of EPDM.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges a rotating annular cable on the fishway across the dam, and a hollow box with a bottom opening is suspended below the cable. When the migrating fish in the fishway encounter difficulties and cannot smoothly pass through the fishway, the driving wheel is started, and the hanging box is driven by the cable to move to the top of the target position of the fishway; the box is then lowered into the fishway through the lifting assembly, so that the trapped fish enter the hollow area of ​​the box from the bottom opening of the box, and then the sprocket motor is started, and the chain is driven by the power sprocket to pull the supporting plate from the side wall of the box through the slide groove to the bottom of the box, and the supporting plate running to the bottom blocks the opening of the box, and then the lifting assembly is started to lift the box, and finally the trapped fish are transported to the target waters through the cable, so as to assist the fish to migrate across the dam; in the process of the box carrying the fish running to the target waters through the cable, the driving wheel and the cable are rotated by friction, and then the piston is driven to reciprocate in the cylinder to compress the air and then transport it to the box carrying the fish, so as to supply oxygen to the fish.

[0017] The present invention uses a box on a cable to transfer fish that are in trouble in the fishway to the target waters, thereby increasing the success rate of fish migration, maintaining the number and species diversity of fish populations, promoting the sustainable development of fishery resources, and reducing the impact of human activities on the ecological environment. It restores the ecological balance of rivers, lakes and other waters, promotes the reproduction of aquatic plants and the balance of the food chain, and reduces the impact of human activities on the ecological environment; In the process of a box carrying fishes being moved to a target water area via a cable, the present invention rotates by friction between a driving wheel and a cable, and then drives a piston to reciprocate in a cylinder to compress air and then deliver it to the box carrying the fishes, thereby supplying oxygen to the fishes, improving water quality conditions, reducing the accumulation of harmful substances, reducing the stress response of fishes caused during transportation, improving their adaptability and survival ability, and ensuring the survival rate of the fishes.

[0018] 2. The present invention arranges a lifting assembly on the fixed plate to lift the box body. When the box body falls into the water, the fish enter the hollow area of ​​the box body, and then the chain motor is started to drive the chain. The chain pulls the support plate in the slide groove of the side wall of the box body to run to the bottom of the box body to seal the opening of the box body; double T-shaped elastic sealing strips are arranged between adjacent support plates and between adjacent surfaces of the support plate and the box body, one T-shaped structure of the double T-shaped sealing strip is installed in the T-shaped groove of the support plate to fix the sealing strip, and the other T-shaped structure of the double T-shaped sealing strip seals and fills the gap between two adjacent support plates; double T-shaped sealing strips are arranged between adjacent support plates, and grooves are opened on the double T-shaped grooves, and the tenons on adjacent support plates are inserted into the grooves of the sealing strips, so as to further seal the gaps between adjacent support plates, slow down the loss of water in the box body, and prolong the residence time of the fish in the box body; the T-shaped sealing strip adopts elastic material to fill the adjacent gaps, is easy to install, and has a large gap adjustment range.

[0019] 3. The present invention utilizes the relative movement speed between two adjacent cables during the operation of the cables, and installs a driving wheel and a rotating wheel on the adjacent cables, and the driving wheel and the rotating wheel are fixedly installed at both ends of the rotating shaft; the driving wheel abuts against the adjacent cables to generate rotation, and the driving wheel drives the rotating wheel to rotate, and the rotating wheel drives the piston to reciprocate in the cylinder barrel through the connecting rod; a one-way valve is arranged on the piston, and an air pipe is arranged at the bottom of the cylinder barrel, and the piston reciprocates in the cylinder barrel, and the compressed air is transported to the box body through the air pipe, so as to supply oxygen to the fish school inside the box body, thereby ensuring the vitality of the fish school, improving water quality conditions, reducing the accumulation of harmful substances, reducing the stress response caused to the fish during transportation, improving their adaptability and survival ability, and ensuring the survival rate of the fish school.

[0020] 4. When the lifting motor is started, the present invention uses the lever that rotates with the threaded rod to trigger the displacement of the slide plate, thereby driving the movement of the traction wire, causing the pressure plate and the support rod to move downward together, and finally driving the driving wheel to abut against the moving cable, causing the driving wheel to rotate, driving the connecting rod and the piston connected to the rotating wheel to compress the cylinder barrel, and conveying air into the box body; when the present invention starts the transfer of the fish school, the cylinder barrel is automatically triggered to compress the air and supply oxygen to the inside of the box body, without the need to set up an additional power source, without the need for operation, and automatically triggered, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a three-dimensional schematic diagram of the overall installation structure of the present invention; Figure 2 A three-dimensional diagram of the suspension box and cable installation structure of the present invention Figure 1 ; Figure 3 It is a partial cross-sectional view of an inner wall and a bottom of a box body and a distribution diagram of a chain sprocket of the present invention; Figure 4 The appended Figure 3 A partial cross-sectional view of the installation structure of the guide block "A" in the third slide groove; Figure 5 It is an installation position diagram of the support plate of the present invention when it is located in the inner wall slide groove of the box body and a distribution diagram of the chain sprocket; Figure 6 A three-dimensional diagram of the suspension box and cable installation structure of the present invention Figure 2 ; Figure 7 It is a three-dimensional schematic diagram of the installation structure of the driving wheel, the rotating wheel and the cable of the present invention; Figure 8 It is a three-dimensional schematic diagram of the installation structure of the runner and the cylinder barrel of the present invention; Fig. 9 It is a partial cross-sectional view of the installation structure of the support rod, the through slot and the limit rod of the present invention; Fig.10 It is a cross-sectional view of the installation structure of the support plate and the sealing strip of the present invention; In the figure: fishway 100; driving wheel 110; driven wheel 120; target water area 130; cable 140; monitor 150; suspension box 200; box body 210; first boss 211; second boss 212; suspension rod 220; fixing plate 230; lifting motor 231; threaded rod 232; sliding rod 233; lever 234; wing rod 235; rope gripper 240; through slot 241; sprocket motor 300; power sprocket 310; first steering sprocket 320; second steering sprocket 330; chain 340; rotating wheel 400; eccentric rod 401; connecting rod 402; rotating shaft 403; driving wheel 404; cylinder barrel 410; air pipe 412; support rod 420; The pressure plate 421; the spring 430; the inclined groove 440; the spring 441; the limiting rod 442; the slide plate 500; the inner groove 501; the limiting plate 502; the first tension spring 511; the belly rod 510; the second tension spring 520; the traction wire 530; the direction-changing wheel 531; the first support plate 600; the second support plate 601; the third support plate 602; the tenon 603; the groove 604; the first sealing strip 605; the second sealing strip 606; the first slide groove 610; the second slide groove 611; the third slide groove 612; the fourth slide groove 613; the inclined rod 620; the guide rod 621; the first displacement slot block 622; the second displacement slot block 623; the ring rope 624; the roller 625; the guide block 626. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] like Figure 1-Figure 10As shown, a fish migration over a dam auxiliary system includes a driving wheel 110 connected to a power device, and a circular cable 140 installed above the fishway 100. The driving wheel 110 and the driven wheel 120 are respectively sleeved at both ends of the circular cable 140. A suspension box 200 is fixed on the cable 140. The suspension box 200 includes a fixing plate 230 and a box body 210. The top of the fixing plate 230 is connected to a cable gripper 240 through a suspension rod 220. The cable gripper 240 is fixedly connected to the cable 140, the bottom of the fixed plate 230 is connected to the box body 210 through a lifting assembly, and the box body 210 is a hollow structure with an opening at the bottom. A connecting slide groove is provided at an inner wall of the box body 210 and the bottom box wall. A pallet is slidably installed in the slide groove, and both sides of one end of the pallet are respectively connected to the two ends of the chain 340. The chain 340 is driven by a sprocket and a sprocket motor 300. The chain 340 pulls the pallet from the inner wall of the box body 210 through the slide groove to the bottom opening of the box body 210 to achieve blocking.

[0025] Among them, fishway 100, also known as dam fishway or fish ladder, is a structure that provides a route for migratory fish to cross artificial barriers (such as dams, weirs) or natural barriers. The main value of this structure is to reduce the barrier effect of dams on migratory species, allowing fish to migrate smoothly for reproduction or feeding, thereby protecting fishery resources and promoting the sustainable development of fishery production. A fishway is an artificially constructed water trough set up next to a dam to provide a passage for fish to cross obstacles. By simulating the natural river environment, the fishway helps fish overcome the water flow difference and achieve migration across the dam, while reducing the negative impact on the physiological functions of fish.

[0026] Figure 1 In the figure, a power device (not shown) connected to the driving wheel 110 includes a motor and a gear set to drive the driving wheel 110 to rotate. The above devices can be purchased commercially and are all prior art, so they will not be described in detail. The power device drives the driving wheel 110, and the annular cable 140 rotates around the driving wheel 110 and the driven wheel 120. The cable 140 is fixed with a monitor 150 and a suspension box 200 that rotates with the cable 140. The monitor 150 provides timely feedback for abnormal conditions during operation.

[0027] The cable grip 240 is used to support and fix the box 210. The main claw on the cable grip 240 is fixed on the suspension rod 220 of the box 210. The main claw is the main part of the cable grip that directly contacts the cable and is responsible for providing basic clamping force. The cable grip 240 is a common component in the operation of cable cars and cable structures and belongs to the prior art.

[0028] In the present invention, when the migrating fish in the fishway 100 encounter difficulties and cannot pass through the fishway smoothly, the driving wheel 110 is activated, and the suspension box 200 is driven to run to the target of the fishway through the cable 140; the box 210 is then vertically lowered into the fishway through the lifting assembly, so that the trapped fish enter the hollow area of ​​the box from the bottom opening of the box 210, and then the sprocket motor 300 is started, and the chain 340 is driven by the power sprocket 310 to pull the tray from the side wall of the box through the slide to the bottom of the box, and the tray blocks the opening of the box 210, and then the lifting assembly is started to lift the box 210, and finally the trapped fish are transported to the target water area 130 through the cable 140, so as to assist the fish to migrate across the dam.

[0029] Furthermore, the lifting assembly includes two sets of lifting motors 231 symmetrically arranged at the diagonals of the fixed plate 230, and the lifting motors 231 are equipped with threaded rods 232, which are connected to the box wall of the box body 210 by screwing; the other two sets of diagonals of the fixed plate 230 are slidably connected to the box wall of the box body 210 through sliding rods 233.

[0030] Figure 2 and Figure 3 As shown in the figure, when the two sets of lifting motors 231 at the diagonal positions of the fixing plate 230 are started, the threaded rods 232 at the output ends are screwed and rotated in the wall of the box body 210, thereby realizing the lifting function of the box body 210, so that the box body 210 is lowered into the water where the fish are trapped, or lifted up from the water.

[0031] In addition, the slide bar 233 at the diagonal position stabilizes the structure; the slide bar can also be set as a lifting motor and threaded rod assembly to enhance the lifting force.

[0032] A boss (not shown in the figure) is arranged at the bottom of the threaded rod 232 adjacent to the fixed plate 230, and a sleeve (not shown in the figure) is arranged on the outer periphery of the boss. The top end of the sleeve is fixedly connected to the bottom of the fixed plate 230, and a bottom support is arranged at the bottom of the sleeve to lift the boss. The boss of the threaded rod 232 rotates on the bottom support of the sleeve, and the sleeve lifts the threaded rod 232 to prevent the lifting motor 231 from being subjected to excessive axial force.

[0033] Furthermore, the slide groove includes a first slide groove 610, a second slide groove 611, a third slide groove 612 and a fourth slide groove 613. The first slide groove 610 and the second slide groove 611 are located on both sides of an inner wall of the box body 210 and are symmetrically arranged. The first slide groove 610 and the second slide groove 611 respectively include two vertically opened notches, and the two notches are connected to each other; the third slide groove 612 and the fourth slide groove 613 are located on both sides of the bottom of the box body 210 and are symmetrically arranged. The third slide groove 612 and the fourth slide groove 613 respectively include two vertically opened notches, and the two notches are connected to each other; the first slide groove 610 is connected to the third slide groove 612 through an arc groove, and the second slide groove 611 and the fourth slide groove 613 are connected through an arc groove.

[0034] Figure 3 As shown in the figure, the right side is a cross-sectional structure diagram of the inner wall and the bottom of the box body 210, and the right side is a distribution structure diagram of the chain and sprocket on the adjacent inner wall, wherein the first slide groove 610 is connected with the third slide groove 612 through an arc groove, and the second slide groove 611 is connected with the fourth slide groove 613 through an arc groove, and both sides of the interior of the box body 210 are connected, which is beneficial for the pallet installed in the inner wall slide groove to slide to the bottom of the box body 210 through the connected slide groove, completing the blocking of the opening of the box body 210, so that the box body forms a complete built-in space, which is beneficial for loading fish.

[0035] Furthermore, the support plate includes a first support plate 600, a second support plate 601 and a third support plate 602 which are installed in sequence, and both ends of the support plates are installed in the slide grooves on both sides of the box body 210 through rollers 625. The side of the support plates close to the inner wall of the box body is connected to each other through a ring rope 624, and adjacent support plates are detachably connected through a tenon 603 and a falcon groove; a guide rod 621 is fixed on the roller 625 at the upper end of the first support plate 600, and the guide rod 621 is hinged to one end of the inclined rod 620 toward the side inside the box body, and the other end of the inclined rod 620 is hinged to a guide block 626, and the guide block 626 is hinged to the roller 625 at the bottom end of the third support plate 602, and the guide block 626 is slidably installed in the third slide groove 612.

[0036] Figure 5 As shown in the figure, it is a matching structure diagram of the support plate close to the inner wall of the box body, and a structure diagram of the chain sprocket position; under normal conditions, the support plate is installed in the slide groove of the inner wall of the box body 210 through the roller 625, and the adjacent support plates are connected to each other through the ring rope 624. There is a certain distance between the support plates. When the support plate slides to the arc groove section, sufficient space is guaranteed to pass without interference; the roller 625 is rotatably installed at both ends of the support plate, and the roller 625 extends into the notch of the slide groove at both ends. The end of the roller 625 is thickened, and the thickened end is vertically installed in the other notch of the slide groove. The thickened end serves as a further limit for sliding to ensure the accurate sliding position.

[0037] Figure 4, which is a cross-sectional view of the installation structure of the guide block 626 in the third slide groove 612 , and the guide block 626 is pulled by the chain 340 and only slides horizontally in the third slide groove 612 .

[0038] A guide rod 621 is fixedly arranged on the thickened end of the roller 625 at the top of the first support plate 600. The guide rod 621 only slides up and down in the first slide groove 610, plays a pulling role on the support plate during the upward movement, and plays a pushing role on the support plate during the downward movement; The guide rod 621 is connected to one end of the inclined rod 620 in a hinged manner; the roller 625 at the bottom of the third support plate 602 is connected to the guide block 626 in a hinged manner, and the guide block 626 is slidably installed in the third slide groove 612, and the other end of the inclined rod 620 is hinged to the guide block 626; when the support plate slides in the slide groove to the bottom opening of the box body, the bottom of the inclined rod 620 moves horizontally along the third slide groove 612 to pull the support plate, and the top of the inclined rod 620 moves downward along the first slide groove 610, so that the guide rod 621 squeezes the first support plate 600 into the third slide groove 612, completing the blocking of the bottom opening of the box body 210.

[0039] It should be noted that a first displacement slot block 622 is installed between the diagonal rod 620 and the top roller 625, and a second displacement slot block 623 is installed between the guide block 626 and the bottom roller 625. When the first displacement slot block 622 and the second displacement slot block 623 are connected to the hinge, they provide sliding space to supplement the distance of the pallet during the change of direction.

[0040] Furthermore, the sprocket includes a power sprocket 310, a first steering sprocket 320 and a second steering sprocket 330, and the sprocket motor 300 is installed with the power sprocket 310; the second steering sprocket 330 is set at the end of the third slide groove 612 away from the first slide groove 610, and the chain 340 is fixed on the guide block 626, and the free end of the chain 340 passes through the second steering sprocket 330 and then extends vertically to the top of the box body 210; the chain 340 is connected to the power sprocket 310 and then passes through the first steering sprocket 320 on the top of the box body and changes direction. The chain 340 after changing direction is fixedly connected to the guide rod 621.

[0041] Figure 2 , Figure 3 and Figure 5 As shown in , the sprocket motor 300 is a forward and reverse low-speed motor. By starting the sprocket motor 300 to drive the chain 340 to rotate, the traction support plate slides in the slideway to generate displacement. A limiter is set on the inner wall of the box body 210 to control the timely stop of the sprocket motor 300 to ensure the safety of the equipment.

[0042] The sprocket motor 300 and the limiter are both commercially available and are prior art, so they will not be described in detail here.

[0043] Furthermore, a cylinder barrel 410 is fixedly provided on one side of the cable gripper 240, a piston is installed in the cylinder barrel 410, a one-way valve is provided on the piston, and the bottom of the cylinder barrel 410 is connected to the inside of the box body 210 through an air pipe 412; a support block is fixedly provided on the other side of the cable gripper 240, a support rod 420 is provided on the support block along the direction of the cable 140, a rotating shaft 403 is installed on one end of the support rod 420 extending outward, a rotating wheel 400 is fixedly installed on one end of the rotating shaft 403 close to the cylinder barrel 410, the rotating wheel 400 is located above the cable 140, an eccentric rod 401 is fixedly provided on one side of the rotating wheel 400 close to the cylinder barrel 410, a connecting rod 402 is rotatably connected to the eccentric rod 401, and the other end of the connecting rod 402 is hinged to the piston; the rotating shaft 403 extends from one end of the cylinder barrel 410 to the adjacent cable 140 and a driving wheel 404 is fixedly provided on the end.

[0044] Figure 7 and Figure 8 As shown in , during the movement of the cables, there is a relative movement speed between two adjacent cables 140, and a driving wheel 404 and a rotating wheel 400 are installed on the adjacent cables 140, and the driving wheel 404 and the rotating wheel 400 are fixedly installed at both ends of the rotating shaft 403; The driving wheel 404 abuts against the adjacent cable 160 to rotate, and the driving wheel 404 drives the rotating wheel 400 to rotate, and the rotating wheel 400 drives the piston to reciprocate in the cylinder 410 through the connecting rod 402; a one-way valve is set on the piston, and the one-way valve only allows gas to enter the cylinder 410 from the outside. The bottom of the cylinder 410 is provided with an air pipe 412, and the piston reciprocates in the cylinder 410, and the compressed air is transported to the box 210 through the air pipe 412, and oxygen is supplied to the fish school inside the box 210 to ensure the vitality of the fish school. It should be noted that a vent is set on the top of the box 210 to facilitate air circulation.

[0045] Furthermore, a through slot 241 is provided in the support block along the direction of the cable 140, the support rod 420 is installed in the through slot 241 and can slide up and down, and a spring 430 is installed at the bottom of the through slot 241; four limit rods 442 are installed on the support block, and the limit rods 442 are located on both sides of the support rod 420; a movable slot is vertically provided in the through slot 241 away from the direction of the cylinder barrel 410, and a pressure plate 421 is provided in the movable slot, the pressure plate 421 is fixedly connected to the support rod 420, and a traction wire 530 is fixedly connected to the pressure plate 421, and the traction wire 530 is connected to the trigger assembly after passing through a plurality of changing wheels 531.

[0046] Figure 8 and Fig. 9As shown in the figure, the support rod 420 is installed in the through groove 241 and can slide up and down. A spring 430 is installed at the bottom of the through groove 241. When there is no need to supply oxygen to the inside of the box 210, the support rod 420 is located at the upper part, and the rotating shaft 403 and the driving wheel 404 connected to the support rod 420 are located at the upper part, and the driving wheel 404 is not in contact with the cable 140; when it is necessary to supply oxygen to the inside of the box 210, the traction wire 530 is driven downward by the trigger assembly, and the pressure plate 421 and the support rod 420 are driven downward together. When the support rod 420 moves downward, the limiting rods 442 located on both sides of the through slot 241 rebound to the top of the support rod 420 under the action of the return spring 441 in the inclined slot 440, so that the support rod 420 is stably located at the bottom of the through slot 241; The rotating shaft 403 connected to the support rod 420 and the driving wheel 404 are displaced downward together, and the driving wheel 404 contacts the cable 140. When the cable 140 moves, the two adjacent cables 140 moving relative to each other contact and cause the driving wheel 404 to rotate.

[0047] It should be noted that the downward force generated by the trigger assembly on the traction wire 530 is greater than the rebound force of the spring 430; a matching plane is set at the contact point between the limit rod 442 and the top of the support rod 420 to ensure that the limit rod 442 will not retreat into the inclined groove 440 when subjected to an upward force, which is beneficial to the stability of the limit.

[0048] Furthermore, the trigger assembly includes a lever 234 fixed on the threaded rod 232, a slide plate 500 is slidably arranged on the side wall of the fixed plate 230, and the slide plate 500 is arranged adjacent to the lever 234; an L-shaped hook is fixed at one end of the slide plate 500 adjacent to the lever 234, and the L-shaped hook is connected to the lever assembly, and the end of the slide plate 500 away from the lever 234 is fixedly connected to the traction wire 530, and the end of the slide plate 500 away from the lever 234 is installed on the side wall of the fixed plate 230 through a second tension spring 520; the lever assembly includes a rotatable arrangement on the fixed plate 23 0, the web bar 510 is arranged along the direction of the slide plate 500, the pivot of the web bar 510 is located at the end away from the L-shaped hook head, and the side of the web bar 510 away from the lever 234 is connected to the fixed plate 230 through the first tension spring 511; the end of the web bar 510 adjacent to the L-shaped hook head extends to both sides to form a wing bar 235, one end of the wing bar 235 is connected to the L-shaped hook head by a slidable pulling manner, and the other end of the wing bar 235 extends toward the lever 234, and the extended wing bar 235 is moved by the rotating lever 234.

[0049] Figure 6 As shown in FIG. 2 , a limiting plate 502 is fixedly arranged on one side of the fixed plate 230 , an inner groove 501 is provided on the slide plate 500 , the inner groove 501 is slidably sleeved on the limiting plate 502 , and the limiting plate 502 extends outward to form a protrusion to prevent the slide plate 500 from falling off; A lever 234 is fixedly arranged on the threaded rod 232 adjacent to the slide plate 500. When the threaded rod 232 rotates, the lever 234 rotates along with the threaded rod 232. The end of the slide plate 500 away from the lever 234 is fixedly connected to the traction wire 530, and the other end of the traction wire 530 is fixedly connected to the pressing plate 421. The end of the slide plate 500 away from the lever 234 is mounted on the side wall of the fixed plate 230 through the second tension spring 520. An L-shaped hook is fixed to one end of the skateboard 500 adjacent to the lever 234, and the L-shaped hook is connected to one end of the wing rod 235 by a slidable pulling manner. A rotating pivot is set on the belly rod 510 vertically connected to the wing rod 235, and the side of the belly rod 510 away from the lever 234 is connected to the fixed plate 230 through a first tension spring 511. The end of the wing rod 235 away from the L-shaped hook extends toward the lever 234, and the extended wing rod 235 is moved by the rotating lever 234.

[0050] When the lever 234 moves the wing lever 235 ( Figure 6 As shown in the figure, the lever 234 rotates counterclockwise), the wing rod 235 rotates downward to disengage the wing rod 235 from the L-shaped hook. At this time, the slide plate 500 moves in the direction away from the wing rod 235 under the tension of the second tension spring 520, and the wing rod 235 moves in the direction away from the lever 234 under the action of the first tension spring and no longer contacts the lever 234. During the movement of the slide plate 500, the traction wire 530 is driven to move, and the traction wire 530 pulls the pressure plate 421 and the support rod 420 to move downward together, so that the support rod 420 is locked by the limit rod 442 to form a stable state.

[0051] It should be noted that the tension of the second tension spring 520 is greater than the elastic force of the spring 430 .

[0052] Furthermore, a T-shaped groove is provided on the first convex shoulder 211 and the second convex shoulder 212 at the bottom of the box body 210. The T-shaped groove is wide inside and narrow at the opening. A first sealing strip 605 is installed in the T-shaped groove of the convex shoulder. The first sealing strip 605 is two double T-shaped structures connected perpendicularly to each other. One T-shaped structure of the first sealing strip 605 is installed in the T-shaped groove of the first convex shoulder 211 and the second convex shoulder 212. The other T-shaped structure of the first sealing strip 605 is sealed to connect the convex shoulder and the support plate. One end of the first support plate 601 and the second support plate 602 are provided with a tenon 603. The second support plate 603 is provided with a tenon 603. 01 is provided with a T-slot at the end away from the tenon 603, and a T-slot is provided at the end of the third support plate 602 away from the box body 210, and the second sealing strip 606 is installed in the T-slots of the first support plate 600 and the second support plate 601; the second sealing strip 606 is two double T-shaped structures vertically connected to each other, one T-shaped structure of the second sealing strip 606 is installed in the T-slot of the support plate, and the other T-shaped structure of the second sealing strip 606 seals and fills the gap between two adjacent support plates; the second sealing strip 606 is provided with a groove 604 adapted to the tenon 603, and the tenon 603 is inserted into the groove 604 of the adjacent second sealing strip 606 to seal the structure; wherein, the elasticity of the first sealing strip 605 and the second sealing strip 606 is used to fill and adjust the gap, slow down the loss of water inside the box body 210, and extend the residence time of the fish inside the box body 210.

[0053] Fig.10 As shown in the figure, it is a sealing structure diagram when the first boss 211, the first support plate 600, the second support plate 601, the third support plate 602 and the second boss 212 are at the bottom opening of the box body 210. One side of the sealing strip is installed in the corresponding T-slot, the opening is narrow and the interior is blocked. This T-slot not only seals the sealing strip, but also has a fixing function to prevent it from falling off.

[0054] The first sealing strip 605 may also be provided at other joints between the bottom of the box body 210 and the support plate to enhance the sealing performance, slow down the loss of water inside the box body 210 , and extend the residence time of the fish inside the box body 210 .

[0055] Furthermore, the first sealing strip 605 and the second sealing strip 606 are both made of EPDM.

[0056] It should be noted that EPDM, also known as EPDM rubber, has good corrosion resistance and elasticity. During use, its elasticity is utilized to squeeze the raised part into the T-slot to play a role of fixing and sealing, thereby filling the adjacent gaps, facilitating installation and having a large adjustment range.

[0057] First, when it is found that the migrating fish in the fishway 100 are in trouble, the driving wheel 110 is started to drive the suspension box 200 to move above the target position of the fishway through the cable 140; then the lifting motor 231 is started to drive the threaded rod 232 to rotate in the threaded hole of the box wall, so that the box 210 is lowered into the fishway, so that the trapped fish enter the hollow area of ​​the box from the bottom opening of the box 210; Second, the sprocket motor 300 is started to drive the power sprocket 310 to drive the chain 340, and the traction plate is moved from the side wall of the box body to the bottom of the box body 210 through the slide slot, and the opening of the box body 210 is blocked by the plate, and then the lifting assembly is started to lift the box body 210, and finally the trapped fish school is transported to the target water area 130 through the cable 140, so as to assist the fish to migrate across the dam; Third, when the lifting motor 231 drives the threaded rod 232 to rotate, the lever 234 fixed on the threaded rod 232 rotates, and the lever 234 drives the wing rod 235 to rotate, and the wing rod 235 rotates downward to separate the wing rod 235 from the L-shaped hook. At this time, the slide plate 500 moves away from the wing rod 235 under the tension of the second tension spring 520, and the wing rod 235 moves away from the lever 234 under the action of the first tension spring, and the wing rod 235 is no longer in contact with the lever 234; the slide plate 500 drives the traction wire 530 to move during the movement, and the traction wire 530 pulls the pressure plate 421 and the support rod 420 to move downward together; Fourth, when the support rod 420 moves downward, the limit rods 442 located on both sides of the through slot 241 rebound to the top of the support rod 420 under the action of the return spring 441 in the inclined slot 440, so that the support rod 420 is stably located at the bottom of the through slot 241; the rotating shaft 403 and the driving wheel 404 connected to the support rod 420 move downward together, and the driving wheel 404 abuts against the cable 140. When the cable 140 moves, the two adjacent cables 140 that move relative to each other touch each other to cause the driving wheel 404 to rotate; Fifth, the rotating driving wheel 404 drives the rotating wheel 400 to rotate, and the rotating wheel 400 drives the piston to reciprocate in the cylinder 410 through the connecting rod 402. An air pipe 412 is provided at the bottom of the cylinder 410, and the air compressed by the reciprocating motion is transported to the box 210 through the air pipe 412 to supply oxygen to the fish inside the box 210 to ensure the survival of the fish.

[0058] The present invention illustrates the technical concept of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A fish migration over a dam auxiliary system, comprising a driving wheel (110) connected to a power device, and a circular cable (140) installed above a fishway (100), wherein the driving wheel (110) and the driven wheel (120) are respectively sleeved at both ends of the circular cable (140), and a suspension box (200) is fixed on the cable (140), characterized in that: The suspension box (200) comprises a fixed plate (230) and a box body (210); the top of the fixed plate (230) is connected to a cable gripper (240) via a suspension rod (220); the cable gripper (240) is fixedly connected to a cable (140); the bottom of the fixed plate (230) is connected to the box body (210) via a lifting assembly; the box body (210) is a hollow structure with an opening at the bottom; a sliding groove communicating with an inner wall of the box body (210) and a bottom box wall are provided; a support plate is slidably mounted in the sliding groove; two sides of one end of the support plate are respectively connected to two ends of a chain (340); the chain (340) is driven by a sprocket and a sprocket motor (300); the chain (340) pulls the support plate from the inner wall of the box body (210) through the sliding groove to the bottom opening of the box body (210) to achieve blocking.

2. The fish migration dam auxiliary system according to claim 1 is characterized in that: The lifting assembly comprises two groups of lifting motors (231) symmetrically arranged at diagonal positions of a fixed plate (230); threaded rods (232) are mounted on the lifting motors (231); the threaded rods (232) are connected to the box wall of the box body (210) by screw connection; and the other two groups of diagonal positions of the fixed plate (230) are slidably connected to the box wall of the box body (210) by means of sliding rods (233).

3. The fish migration over-dam auxiliary system according to claim 2 is characterized in that: The slide groove comprises a first slide groove (610), a second slide groove (611), a third slide groove (612) and a fourth slide groove (613); the first slide groove (610) and the second slide groove (611) are located on both sides of an inner wall of the box body (210) and are symmetrically arranged; the slide grooves (610, 611) comprise two vertically opened notches, and the two notches are connected to each other; the third slide groove (612) and the fourth slide groove (613) are located on both sides of the bottom of the box body (210) and are symmetrically arranged; the slide grooves (612, 613) comprise two vertically opened notches, and the two notches are connected to each other; the first slide groove (610) is connected to the third slide groove (612) through an arc groove, and the second slide groove (611) and the fourth slide groove (613) are connected through an arc groove.

4. The fish migration over-dam auxiliary system according to claim 3 is characterized in that: The support plate comprises a first support plate (600), a second support plate (601) and a third support plate (602) which are installed in sequence. Both ends of the support plates (600, 601 and 602) are installed in slide grooves on both sides of the box body (210) through rollers (625). The sides of the support plates (600, 601 and 602) close to the inner wall of the box body are connected to each other through a ring rope (624). Adjacent support plates are detachably connected through a tenon (603) and a dovetail groove. A guide rod (621) is fixed on the roller (625) at the upper end of the first support plate (600). The guide rod (621) is hinged to one end of an inclined rod (620) facing the side inside the box body. The other end of the inclined rod (620) is hinged to a guide block (626). The guide block (626) is hinged to the roller (625) at the bottom end of the third support plate (602). The guide block (626) is slidably installed in the third slide groove (612).

5. The fish migration over-dam auxiliary system according to claim 4 is characterized in that: The sprocket comprises a power sprocket (310), a first steering sprocket (320) and a second steering sprocket (330); the sprocket motor (300) is installed with the power sprocket (310); the second steering sprocket (330) is arranged at one end of the third slide groove (612) away from the first slide groove (610); a chain (340) is fixed on the guide block (626); the free end of the chain (340) is changed in direction by the second steering sprocket (330) and then vertically extends to the top of the box body (210); the chain (340) is connected to the power sprocket (310) and then changed in direction by the first steering sprocket (320) at the top of the box body; the chain (340) after changing in direction is fixedly connected to the guide rod (621).

6. The fish migration over-dam auxiliary system according to claim 5, characterized in that: A cylinder barrel (410) is fixedly provided on one side of the cable gripper (240), a piston is installed in the cylinder barrel (410), a one-way valve is provided on the piston, and the bottom of the cylinder barrel (410) is connected to the inside of the box body (210) through an air pipe (412); a support block is fixedly provided on the other side of the cable gripper (240), a support rod (420) is provided on the support block along the direction of the cable (140), a rotating shaft (403) is installed on one end of the support rod (420) extending outward, and the rotating shaft (403) is close to the cylinder barrel (410). A rotating wheel (400) is fixedly mounted on one end of the cylinder barrel (410), the rotating wheel (400) is located above the cable (140), an eccentric rod (401) is fixedly mounted on one side of the rotating wheel (400) close to the cylinder barrel (410), the eccentric rod (401) is rotatably connected to a connecting rod (402), and the other end of the connecting rod (402) is hingedly connected to a piston; an end of the rotating shaft (403) away from the cylinder barrel (410) extends to an adjacent cable (140), and a driving wheel (404) is fixedly mounted on the end thereof.

7. The fish migration over-dam auxiliary system according to claim 6 is characterized in that: A through slot (241) is provided in the support block along the direction of the cable (140), the support rod (420) is installed in the through slot (241) and can slide up and down, and a spring (430) is installed at the bottom of the through slot (241); four limit rods (442) are installed on the support block, and the limit rods (442) are located on both sides of the support rod (420); a movable slot is vertically provided in the through slot (241) in a direction away from the cylinder barrel (410), and a pressure plate (421) is provided in the movable slot, the pressure plate (421) is fixedly connected to the support rod (420), and a traction wire (530) is fixedly connected to the pressure plate (421), and the traction wire (530) is connected to the trigger assembly after passing through a plurality of direction-changing wheels (531).

8. The fish migration over-dam auxiliary system according to claim 7, characterized in that: The trigger assembly comprises a lever (234) fixed on the threaded rod (232); a slide plate (500) is slidably arranged on the side wall of the fixed plate (230); the slide plate (500) is arranged adjacent to the lever (234); an L-shaped hook is fixedly arranged at one end of the slide plate (500) adjacent to the lever (234); the L-shaped hook is connected to the lever assembly; the end of the slide plate (500) away from the lever (234) is fixedly connected to the traction wire (530); and the end of the slide plate (500) away from the lever (234) is mounted on the side wall of the fixed plate (230) via a second tension spring (520); the lever assembly comprises a spring rotatably arranged on the fixed plate (23 0) a web bar (510) on a side wall, the web bar (510) being arranged along the direction of the slide plate (500), the pivot of the web bar (510) being located at an end away from the L-shaped hook head, and the side of the web bar (510) away from the lever (234) being connected to the fixed plate (230) via a first tension spring (511); the end of the web bar (510) adjacent to the L-shaped hook head extending to both sides to form a wing bar (235), one end of the wing bar (235) being connected to the L-shaped hook head via a slidable pulling manner, and the other end of the wing bar (235) extending in the direction of the lever (234), and the extended wing bar (235) being moved by the rotating lever (234).

9. The fish migration over-dam auxiliary system according to claim 4, characterized in that: The bottom of the box body (210) has a first boss (211) and a second boss (212). The bosses (211, 212) are both provided with T-shaped grooves. The T-shaped grooves are wide inside and narrow at the opening. A first sealing strip (605) is installed in the T-shaped grooves of the bosses (211, 212). The first sealing strip (605) is two double T-shaped structures vertically connected to each other. One T-shaped structure of the first sealing strip (605) is installed in the T-shaped grooves of the bosses (211, 212). The other T-shaped structure of the first sealing strip (605) seals and fills the gap between the bosses (211, 212) and the support plates (600, 602). One end of the support plates (600, 601) is provided with a tenon (603). The second support plates (60 1) A T-shaped groove is provided at the end away from the tenon (603), and a T-shaped groove is provided at the end of the third support plate (602) away from the box body (210), and a second sealing strip (606) is installed in the T-shaped groove of the support plates (601, 602); the second sealing strip (606) is two double T-shaped structures vertically connected to each other, one T-shaped structure of the second sealing strip (606) is installed in the T-shaped groove of the support plates (601, 602), and the other T-shaped structure of the second sealing strip (606) seals and fills the gap between two adjacent support plates, and the second sealing strip (606) is provided with a groove 604 matched with the tenon (603), and the tenon (603) is inserted into the groove (604) of the adjacent second sealing strip (606).

10. The fish migration over-dam auxiliary system according to claim 9, characterized in that: The first sealing strip (605) and the second sealing strip (606) are both made of EPDM.

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