A multi-stage wave energy combined power generation device

Abstract

A kind of multi-stage wave energy combined power generation device belongs to wave energy engine technical field, to solve the problem of low wave energy capture conversion efficiency under weak wave, energy utilization is insufficient;Energy conversion is unstable when strong wave, prone to cause key components overload damage, the invention includes fixed base, one end of the fixed base is fixedly connected with fixed frame, the bottom of the fixed frame is rotatably connected with second connecting rod, the inside of the second connecting rod is fixedly connected with counterweight air adjusting assembly, the other end of the second connecting rod is movably connected with self-adapting amplitude adjusting assembly, the other end of the self-adapting amplitude adjusting assembly is rotatably connected with first connecting rod.The present application is optimized by setting self-adapting amplitude adjusting assembly and counterweight air adjusting assembly, improves weak wave energy capture efficiency, when wave is larger, then reduce transmission stroke, stabilize hydraulic piston rod output, reduce connecting rod, transmission mechanism and generator overload and impact damage, realize wave energy power generation device to the efficient, stable conversion of wave energy.

Description

Technical Field

[0001] This invention relates to the field of wave energy engine technology, specifically to a multi-stage wave energy combined power generation device. Background Technology

[0002] Wave energy generation devices are equipment that convert ocean wave energy into electrical energy, and are mainly used in the development of renewable energy on the coast or at sea.

[0003] The core principle is that the buoy is driven to rise and fall by wave motion, which allows the buoy to absorb wave energy and drive the connecting rod connected to the buoy to flip. The flipping connecting rod converts the wave energy absorbed by the buoy into mechanical energy. Then, the flipping connecting rod drives the hydraulic rod to contract, converting mechanical energy into hydraulic energy. The hydraulic energy is then transported to the hydraulic motor through the transport conduit, converting hydraulic energy into rotational mechanical energy. At this time, the rotational mechanical energy drives the generator to generate electricity.

[0004] In actual operation, current multi-stage wave energy combined power generation devices cannot efficiently capture and convert weak wave energy due to the small amplitude of wave fluctuations, making it difficult to maximize wave energy utilization. When encountering larger waves, the wave energy fluctuates violently, and the device lacks effective adaptive adjustment capabilities, making it unable to stably capture wave energy and ensure continuous and stable energy conversion. This can easily cause overload and impact damage to key components such as connecting rods, transmission mechanisms, and generators, thereby significantly shortening the service life of the equipment.

[0005] To address the above issues, a multi-stage wave energy combined power generation device is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-stage wave energy combined power generation device. By using this device, the problems of low wave energy capture and conversion efficiency and insufficient energy utilization in the above-mentioned multi-stage wave energy combined power generation devices under weak wave conditions, and unstable energy conversion due to lack of adaptive adjustment under strong wave conditions, which easily causes overload damage to key components and shortens the service life of the equipment, are solved.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage wave energy combined power generation device, comprising a base, a fixed frame fixedly connected to one end of the fixed base, a second connecting rod rotatably connected to the bottom of the fixed frame, a counterweight gas regulating component fixedly connected inside the second connecting rod, an adaptive amplitude regulating component movably connected to the end of the second connecting rod away from the fixed frame, a first connecting rod rotatably connected to the end of the adaptive amplitude regulating component away from the second connecting rod, the adaptive amplitude regulating component being fixedly connected to the fixed frame, a float rotatably connected to the end of the first connecting rod, a wave sensor fixedly connected to the top of the float, and the second connecting rod being rotatably connected to the end of the first connecting rod. A hydraulic piston rod is rotatably connected to the top of the two connecting rods. The end of the hydraulic piston rod away from the second connecting rod is rotatably connected to the fixed frame. A transport conduit is fixedly connected to the end of the hydraulic piston rod away from the second connecting rod. The other end of the hydraulic piston rod is rotatably connected to the top of the fixed frame. An accumulator is fixedly connected to the end of the transport conduit away from the hydraulic piston rod. A hydraulic motor is fixedly connected to the output end of the accumulator. A generator is fixedly connected to the output end of the hydraulic motor. An energy storage box is electrically connected to the output end of the generator. The accumulator, hydraulic motor, generator, and energy storage box are all fixedly mounted on the surface of the fixed base.

[0008] Furthermore, the adaptive amplitude adjustment component includes telescopic rods that are slidably connected to the ends of the first link and the second link, respectively. Each end of the telescopic rod is fixedly connected to a fixed seat, and one end of each fixed seat is rotatably connected to a segmented rack.

[0009] Furthermore, the adaptive amplitude adjustment component also includes a fixed plate rotatably connected to the end of the first connecting rod, and a connecting rod adjustment cavity is fixedly connected to the other end of the fixed plate. Corrugated sealing membranes are movably connected to both ends of the connecting rod adjustment cavity, and the corrugated sealing membranes are tightly fitted to the surfaces of the first connecting rod and the second connecting rod.

[0010] Furthermore, one end of each segmented rack is meshed with a gear, and both gears are rotatably connected to the inner wall of the connecting rod adjusting cavity. The toothed portions of the two segmented racks are opposite, and one end of one gear is fixedly connected to a first conical wheel, while the other end of the gear is rotatably connected to the inner wall of the connecting rod adjusting cavity.

[0011] Furthermore, the surface of the first conical wheel is engaged with a chain belt, and the chain belt is also engaged with a second conical wheel. The second conical wheel is fixedly installed at the end of another gear, and the second conical wheel is arranged in the opposite direction to the first conical wheel at both ends of the inner wall of the connecting rod adjusting cavity.

[0012] Furthermore, a threaded sleeve is rotatably connected to the end of the second conical wheel, and a bracket is slidably connected to one end of the threaded sleeve. The bracket is fixedly connected to the connecting rod adjustment cavity, and a threaded rod is threadedly connected to the inside of the threaded sleeve.

[0013] Furthermore, a drive motor is fixedly connected to the inner wall of the connecting rod adjustment cavity, and a threaded rod is fixedly connected to the output end of the drive motor.

[0014] Furthermore, the counterweight air regulating assembly includes a guide rail fixedly connected inside the second connecting rod, a lead screw rotatably connected inside the guide rail, and a slider slidably connected inside the guide rail, with the lead screw threaded onto the slider.

[0015] Furthermore, a counterweight is fixedly connected to the top of the slider, and a cylinder is fixedly connected inside the second connecting rod, with the output end of the cylinder connected to one end of the counterweight.

[0016] Furthermore, a micro motor is fixedly connected to one end of the lead screw, the micro motor is fixedly installed inside the second connecting rod, an armored air duct is fixedly connected to one end of the cylinder, an air bag is fixedly connected to the bottom of the float, and the end of the air bag is fixedly connected to the other end of the armored air duct.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, by setting an adaptive amplitude adjustment component, can adjust the swing amplitude and transmission ratio of the first and second connecting rods in real time according to the wave size. When the wave is small, the lifting amplitude of the connecting rod is increased to improve the efficiency of capturing weak wave energy; when the wave is large, the transmission stroke is reduced to stabilize the output of the hydraulic piston rod, effectively reducing overload and impact damage to the connecting rod, transmission mechanism and generator, extending the service life of the equipment, and achieving efficient and stable conversion of wave energy.

[0018] By setting the counterweight air regulating component and the adaptive amplitude regulating component to work together, the second linkage lever arm and the buoyancy of the float can be dynamically adjusted. When the waves are small, the volume of the float airbag is increased and the position of the counterweight is optimized to improve the float's response to weak waves. When the waves are large, the airbag inflation volume is reduced and the float's draft is changed to reduce the impact of large waves, further ensuring the continuous and stable energy conversion and significantly improving the device's adaptability and wave energy utilization rate in complex sea conditions. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of the multi-stage wave energy combined power generation device of the present invention; Figure 2 This is a second-view three-dimensional structural diagram of the multi-stage wave energy combined power generation device of the present invention; Figure 3This is a three-dimensional structural diagram of the second link and the adaptive amplitude modulation component of the present invention. Figure 4 This is a three-dimensional structural diagram of the buoy and airbag combination of the present invention; Figure 5 This is a three-dimensional structural diagram of the connecting rod adjusting cavity and the corrugated sealing membrane of the present invention; Figure 6 This is a three-dimensional structural diagram of the adaptive amplitude modulation component of the present invention; Figure 7 This is a three-dimensional structural diagram of the second conical wheel and the threaded sleeve of the present invention; Figure 8 This is a three-dimensional structural diagram of the armored air duct and airbag of the present invention. Figure 9 This is a three-dimensional structural diagram of the second connecting rod and guide rail of the present invention; Figure 10 This is a three-dimensional structural diagram of the counterweight air regulating component of the present invention.

[0020] In the diagram: 1. Fixed base; 2. Fixed frame; 3. Second connecting rod; 4. First connecting rod; 5. Float; 6. Adaptive amplitude adjustment component; 61. Telescopic rod; 62. Fixed seat; 63. Segmented rack; 64. Gear; 65. First conical wheel; 66. Chain belt; 67. Second conical wheel; 68. Threaded sleeve; 69. Threaded rod; 610. Drive motor; 611. Connecting rod adjustment chamber; 612. Corrugated sealing membrane; 613. Fixed plate; 614. Bracket; 7. Counterweight air adjustment component; 71. Guide rail; 72. Lead screw; 73. Slider; 74. Counterweight block; 75. Cylinder; 76. Micro motor; 77. Armored air duct; 78. Airbag; 8. Hydraulic piston rod; 9. Transport duct; 10. Accumulator; 11. Hydraulic motor; 12. Generator; 13. Energy storage tank; 14. Wave sensor. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only 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.

[0022] like Figures 1-3As shown, the following preferred technical solution is provided: A multi-stage wave energy combined power generation device includes a fixed base 1, which is fixedly installed on the coast. A fixed frame 2 is fixedly connected to one end of the fixed base 1. The fixed frame 2 provides stable support for the main body of the device. A second connecting rod 3 is rotatably connected to the bottom of the fixed frame 2. A counterweight air regulating component 7 is fixedly connected inside the second connecting rod 3. The counterweight air regulating component 7 is used to adjust the lever arm of the second connecting rod 3. An adaptive amplitude regulating component 6 is movably connected to the end of the second connecting rod 3 away from the fixed frame 2. The adaptive amplitude regulating component 6 is located away from the second connecting rod. One end of the second link 3 is rotatably connected to the first link 4. The adaptive amplitude adjustment component 6 is used to adjust the flip angle between the second link 3 and the first link 4. The adaptive amplitude adjustment component 6 is fixedly connected to the fixed frame 2. The fixed frame 2 is fixedly connected to the support rod at one end of the adaptive amplitude adjustment component 6. The end of the first link 4 is rotatably connected to the float 5. Waves impact the float 5, and the float 5 drives the first link 4 to flip. The top of the float 5 is fixedly connected to the wave sensor 14. The wave sensor 14 on the top of the float 5 converts the displacement into an electrical signal to measure the wave height based on the lifting height of the float 5. The second link... A hydraulic piston rod 8 is rotatably connected to the top of the buoy 5. The end of the hydraulic piston rod 8 away from the second link 3 is rotatably connected to the fixed frame 2. Waves impact the float 5, causing the float 5 to move up and down along the first link 4. At this time, the first link 4 drives the adaptive amplitude modulation component 6 to work with the second link 3 to transfer energy to the hydraulic piston rod 8. A transport conduit 9 is fixedly connected to the end of the hydraulic piston rod 8 away from the second link 3. The transport conduit 9 transports the compressed hydraulic fluid from the hydraulic piston rod 8. An energy storage device is fixedly connected to the end of the transport conduit 9 away from the hydraulic piston rod 8. The accumulator 10 is used to store and release hydraulic fluid. The output end of the accumulator 10 is fixedly connected to a hydraulic motor 11. The hydraulic motor 11 receives the released energy from the accumulator 10 and starts to rotate. The output end of the hydraulic motor 11 is fixedly connected to a generator 12, which in turn rotates the generator 12 to generate electricity. The output end of the generator 12 is electrically connected to a storage box 13, which is used to collect the electricity generated by the generator 12. The accumulator 10, the hydraulic motor 11, the generator 12, and the storage box 13 are all fixedly mounted on the surface of the fixed base 1.

[0023] During operation, the adaptive amplitude modulation component 6 can work in conjunction with the counterweight air regulating component 7 to optimize the response of the float 5. When the float 5 moves, the adaptive amplitude modulation component 6 adjusts the undulation height between the first link 4 and the second link 3. When the waves are small, the rotation angle of the first link 4 is transmitted to the adaptive amplitude modulation component 6. Through the amplification effect of the transmission ratio of the adaptive amplitude modulation component 6, the lifting degree of the second link 3 is increased, thereby achieving the capture of weak wave energy, increasing the amount of wave energy conversion, and reducing wave energy loss. The adaptive amplitude modulation component 6 can adjust the transmission ratio between the second link 3 and the first link 4. When facing smaller waves, the rotation angle of the first link 4 is small. However, through the adjustment of the adaptive amplitude modulation component 6, the rotation angle of the second link 3 can be amplified, driving the hydraulic piston rod 8 to compress and discharge normally. At the same time, when the waves are extreme, the rotation angle of the first link 4 is larger. The wave sensor 14 simultaneously detects the undulation height of the float 5, and then the transmission ratio is adjusted through the adaptive amplitude modulation component 6 to reduce the rotation angle of the second link 3, stabilize the energy transmission of the second link 3 to the hydraulic piston rod 8, realize normal wave energy power generation, avoid damage to the equipment under extreme conditions, and ensure stable energy collection.

[0024] The counterweight air regulating component 7 is located inside the second link 3 and at the bottom of the float 5. By adjusting the lever arm distance of the second link 3, the stability of the second link 3 is enhanced. At the same time, the counterweight air regulating component 7 directly adjusts the contact area between the float 5 and the waves. When the waves are small, the water contact area of ​​the float 5 is increased to capture small wave energy. When the waves are large, the water contact area at the bottom of the float 5 is reduced to reduce the degree to which the device is affected by large waves.

[0025] like Figure 5 and Figure 6 As shown, the adaptive amplitude adjustment component 6 includes telescopic rods 61 that are slidably connected to the ends of the first link 4 and the second link 3, respectively. Each telescopic rod 61 is fixedly connected to a fixed seat 62 at its end. Each fixed seat 62 is rotatably connected to a segmented rack 63 at one end. When the float 5 floats up and down due to the influence of waves, the first link 4, which is rotatably connected to the top of the float 5, begins to swing up and down. As the first link 4 moves up and down with the float 5, the telescopic rod 61 at the end of the first link 4 drives the segmented rack 63 to move up and down through the fixed seat 62.

[0026] like Figure 4 and Figure 5As shown, the adaptive amplitude adjustment component 6 also includes a fixed plate 613 rotatably connected to the end of the first link 4. The other end of the fixed plate 613 is fixedly connected to a link adjustment cavity 611. Corrugated sealing membranes 612 are movably connected to both ends of the link adjustment cavity 611. The corrugated sealing membrane 612 has elastic deformation properties and is coated with an anti-corrosion coating to ensure its service life in high-salt and high-corrosion environments such as seawater. The corrugated sealing membrane 612 is tightly attached to the surfaces of the first link 4 and the second link 3. At this time, the segmented rack 63 moves in the link adjustment cavity 611. As the telescopic rod 61 moves the segmented rack 63 through the fixed seat 62, the corrugated sealing membrane 612 on the surfaces of the first link 4 and the second link 3 moves synchronously with the up-and-down swing of the first link 4 and the second link 3, keeping the link adjustment cavity 611 in a sealed state at all times.

[0027] like Figure 6 and Figure 7 As shown, one end of each segmented rack 63 is meshed with a gear 64. Both gears 64 are rotatably connected to the inner wall of the connecting rod adjustment cavity 611. The toothed parts of the two segmented racks 63 are opposite. One end of one gear 64 is fixedly connected to a first conical wheel 65, and the other end of the gear 64 is rotatably connected to the inner wall of the connecting rod adjustment cavity 611. When the first connecting rod 4 floats upward, the segmented rack 63 at one end of the first connecting rod 4 begins to move downward. At the same time, the gear 64 meshed with the end of the segmented rack 63 begins to rotate counterclockwise on the inner wall of the connecting rod adjustment cavity 611. As the gear 64 rotates counterclockwise, the first conical wheel 65 fixedly connected to the other end of the gear 64 begins to rotate in the same direction. When the undulation height of the float 5 continues to increase, the segmented rack 63 begins to move downward continuously. Then, the toothless part of the segmented rack 63 begins to contact the gear 64, and then the gear 64 loses power and stops rotating.

[0028] like Figure 7 As shown, a chain belt 66 is meshed with the surface of the first conical wheel 65, and a second conical wheel 67 is meshed with the chain belt 66. The second conical wheel 67 is fixedly installed at the end of another gear 64. The second conical wheel 67 and the first conical wheel 65 are arranged in opposite directions at both ends of the inner wall of the connecting rod adjusting cavity 611. At this time, the rotation of the first conical wheel 65 causes the chain belt 66 meshed with the surface of the first conical wheel 65 to start rotating. As the chain belt 66 rotates, the second conical wheel 67, which is installed on the inner wall of the connecting rod adjusting cavity 611 and is arranged in the same direction as the first conical wheel 65, rotates synchronously. That is, when the second conical wheel 67 rotates, it can synchronously drive the other gear 64 to rotate, thereby driving the second connecting rod 3 to rotate.

[0029] Specifically, when the waves are small, the second conical wheel 67 drives the chain belt 66 to rotate from its smaller diameter end. At this time, the first conical wheel 65 drives the chain belt 66 to rotate from its larger diameter part. When the larger diameter part of the first conical wheel 65 drives the chain belt 66 to rotate, since the connection point on the second conical wheel 67 is the smaller diameter part, the gear 64 at the end of the second conical wheel 67 rotates more times. Therefore, the segmented rack 63, which meshes with the gear 64 at the end of the second conical wheel 67, moves upward a greater distance, thereby making the rotation angle of the second connecting rod 3 greater than the rotation angle of the first connecting rod 4.

[0030] like Figure 7 As shown, a threaded sleeve 68 is rotatably connected to the end of the second conical wheel 67, and a bracket 614 is slidably connected to one end of the threaded sleeve 68. The bracket 614 is fixedly connected to the connecting rod adjusting cavity 611, and a threaded rod 69 is threadedly connected inside the threaded sleeve 68.

[0031] like Figure 7 As shown, a drive motor 610 is fixedly connected to the inner wall of the connecting rod adjustment cavity 611, and a threaded rod 69 is fixedly connected to the output end of the drive motor 610. Because the threaded sleeve 68 can only move axially and not rotate radially under the limiting action of the bracket 614, under extreme wave conditions, the drive motor 610 in the connecting rod adjustment cavity 611 can adjust the rotation of the threaded rod 69 at any time, thereby driving the threaded sleeve 68 to move on the bracket 614. The movement of the threaded sleeve 68 synchronously adjusts the movement of the second conical wheel 67. The second conical wheel 67 is pushed laterally. As the second conical wheel 67 moves laterally, the chain 66 moves towards the end of the second conical wheel 67 with a larger diameter. As the diameter of the chain 66 meshing connection on the second conical wheel 67 increases, the diameter of the chain 66 meshing connection on the corresponding first conical wheel 65 decreases. At this time, as the float 5 rises and falls, the first conical wheel 65 rotates more times, while the corresponding second conical wheel 67 rotates less times. Therefore, the lifting height of the second connecting rod 3 is more stable, thus making the operation more precise.

[0032] like Figure 8 and Figure 9 As shown, the counterweight air regulating component 7 includes a guide rail 71 fixedly connected inside the second link 3. A lead screw 72 is rotatably connected inside the guide rail 71, and a slider 73 is slidably connected inside the guide rail 71. The lead screw 72 is threaded onto the slider 73. When the adaptive amplitude regulating component 6 starts to run, the counterweight air regulating component 7 begins to work in coordination with the adaptive amplitude regulating component 6 to optimize the response of the float 5. When the lead screw 72 rotates, the slider 73 installed inside the guide rail 71 begins to move inside the guide rail 71.

[0033] like Figure 9As shown, a counterweight 74 is fixedly connected to the top of the slider 73, and a cylinder 75 is also fixedly connected inside the second connecting rod 3. The output end of the cylinder 75 is connected to one end of the counterweight 74. As the slider 73 moves, the counterweight 74 fixedly connected to the top of the slider 73 begins to move synchronously with the direction of movement of the slider 73. As the counterweight 74 moves, the cylinder 75 connected to the end of the counterweight 74 begins to operate.

[0034] Specifically, when the waves are large, the slider 73 carries the counterweight 74 away from the cylinder 75. At this time, the lever arm of the second link 3 changes, the counterweight 74 gets closer to the float 5, and the pressure on the float 5 increases. Then the draft of the float 5 increases. When the waves are small, the counterweight 74 is closer to the cylinder 75. Then the lever arm changes, the pressure on the float 5 decreases, and the draft decreases.

[0035] like Figures 8-10 As shown, a micro motor 76 is fixedly connected to one end of the lead screw 72. The micro motor 76 is fixedly installed inside the second connecting rod 3. An armored air duct 77 is fixedly connected to one end of the cylinder 75. An air bladder 78 is fixedly connected to the bottom of the float 5. The end of the air bladder 78 is fixedly connected to the other end of the armored air duct 77. The micro motor 76 drives the lead screw 72 to rotate. As the lead screw 72 rotates, the slider 73 threaded on the surface of the lead screw 72 drives the counterweight 74 to move. When the counterweight 74 is close to the cylinder 75, the cylinder 75 activates through the end fixedly connected... The armored air duct 77 inflates the airbag 78 fixedly connected to the bottom of the float 5. The airbag 78 enlarges, increasing the contact area with the waves. At this time, the buoyancy increases to cope with smaller waves. When the waves are extreme, the wave sensor 14 detects that the wave height exceeds the safety value. The micro motor 76 drives the lead screw 72 to rotate, which moves the counterweight 74 on the top of the slider 73 away from the cylinder 75, thereby reducing the gas in the airbag 78, increasing the draft of the float 5, mitigating the impact of the waves, and working with the adaptive amplitude modulation component 6 to ensure continuous and stable energy conversion.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] 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 multi-stage wave energy combined power generation device, comprising a fixed base (1), characterized in that: One end of the fixed base (1) is fixedly connected to a fixed frame (2). The bottom of the fixed frame (2) is rotatably connected to a second connecting rod (3). The inside of the second connecting rod (3) is fixedly connected to a counterweight air regulating component (7). The end of the second connecting rod (3) away from the fixed frame (2) is movably connected to an adaptive amplitude regulating component (6). The end of the adaptive amplitude regulating component (6) away from the second connecting rod (3) is rotatably connected to a first connecting rod (4). The adaptive amplitude regulating component (6) is fixedly connected to the fixed frame (2). The end of the first connecting rod (4) is rotatably connected to a float (5). The top of the float (5) is fixedly connected to a wave sensor (14). The top of the second connecting rod (3) is rotatably connected to a hydraulic piston rod (8). The hydraulic piston rod (8) is rotatably connected to a wave sensor (14). One end of the second connecting rod (3) is rotatably connected to the fixed frame (2). The end of the hydraulic piston rod (8) away from the second connecting rod (3) is fixedly connected to the transport conduit (9). The other end of the hydraulic piston rod (8) is rotatably connected to the top of the fixed frame (2). The end of the transport conduit (9) away from the hydraulic piston rod (8) is fixedly connected to the accumulator (10). The output end of the accumulator (10) is fixedly connected to the hydraulic motor (11). The output end of the hydraulic motor (11) is fixedly connected to the generator (12). The output end of the generator (12) is electrically connected to the energy storage box (13). The accumulator (10), hydraulic motor (11), generator (12) and energy storage box (13) are all fixedly mounted on the surface of the fixed base (1).

2. The multi-stage wave energy combined power generation device according to claim 1, characterized in that: The adaptive amplitude adjustment component (6) includes telescopic rods (61) that are slidably connected to the ends of the first link (4) and the second link (3), respectively. Each telescopic rod (61) is fixedly connected to a fixed seat (62) at its end, and a segmented toothed rack (63) is rotatably connected to one end of each fixed seat (62).

3. A multi-stage wave energy combined power generation device according to claim 2, characterized in that: The adaptive amplitude adjustment component (6) further includes a fixing plate (613) rotatably connected to the end of the first connecting rod (4). The other end of the fixing plate (613) is fixedly connected to a connecting rod adjustment cavity (611). Both ends of the connecting rod adjustment cavity (611) are movably connected to a corrugated sealing membrane (612). The corrugated sealing membrane (612) is tightly attached to the surfaces of the first connecting rod (4) and the second connecting rod (3).

4. A multi-stage wave energy combined power generation device according to claim 3, characterized in that: Each segmented rack (63) has a gear (64) meshing at one end. Both gears (64) are rotatably connected to the inner wall of the connecting rod adjusting cavity (611). The toothed parts of the two segmented racks (63) are opposite. One end of one gear (64) is fixedly connected to a first conical wheel (65), and the other end of the gear (64) is rotatably connected to the inner wall of the connecting rod adjusting cavity (611).

5. A multi-stage wave energy combined power generation device according to claim 4, characterized in that: The first conical wheel (65) is meshed with a chain belt (66), and the chain belt (66) is also meshed with a second conical wheel (67). The second conical wheel (67) is fixedly installed at the end of another gear (64). The second conical wheel (67) is arranged in the opposite direction to the first conical wheel (65) at both ends of the inner wall of the connecting rod adjusting cavity (611).

6. A multi-stage wave energy combined power generation device according to claim 5, characterized in that: The end of the second conical wheel (67) is rotatably connected to a threaded sleeve (68), and one end of the threaded sleeve (68) is slidably connected to a bracket (614). The bracket (614) is fixedly connected to the connecting rod adjusting cavity (611), and the threaded sleeve (68) is threadedly connected to a threaded rod (69).

7. A multi-stage wave energy combined power generation device according to claim 6, characterized in that: A drive motor (610) is fixedly connected to the inner wall of the connecting rod adjustment cavity (611), and a threaded rod (69) is fixedly connected to the output end of the drive motor (610).

8. A multi-stage wave energy combined power generation device according to claim 1, characterized in that: The counterweight air regulating assembly (7) includes a guide rail (71) fixedly connected inside the second connecting rod (3), a lead screw (72) rotatably connected inside the guide rail (71), and a slider (73) slidably connected inside the guide rail (71). The lead screw (72) is threaded onto the slider (73).

9. A multi-stage wave energy combined power generation device according to claim 8, characterized in that: A counterweight (74) is fixedly connected to the top of the slider (73), and a cylinder (75) is also fixedly connected inside the second connecting rod (3). The output end of the cylinder (75) is connected to one end of the counterweight (74).

10. A multi-stage wave energy combined power generation device according to claim 9, characterized in that: One end of the lead screw (72) is fixedly connected to a micro motor (76), the micro motor (76) is fixedly installed inside the second connecting rod (3), one end of the cylinder (75) is fixedly connected to an armored air duct (77), the bottom of the float (5) is fixedly connected to an airbag (78), and the end of the airbag (78) is fixedly connected to the other end of the armored air duct (77).

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