A self-sustaining wave energy generation device with swaying attitude

Abstract

This invention discloses a heave-attitude self-sustaining wave energy generation device, relating to the field of marine energy utilization technology. The heave-attitude self-sustaining wave energy generation device includes a base platform; an energy harvesting mechanism for capturing wave energy; and an energy conversion mechanism for converting the acquired wave energy into electrical energy. The energy harvesting mechanism includes a heave arm and a float. The heave arm is a vertically arranged parallelogram linkage mechanism, with one side being a vertically fixed side and the other a vertically movable side. The vertically fixed side is fixed to the base platform, and the vertically movable side can move vertically up and down parallel to the vertically fixed side. In this invention, the design of the heave arm utilizes the parallelogram principle, enabling the float capturing wave energy to have a good motion attitude in the vertical direction, ensuring that the float remains vertical during heave motion, thereby greatly improving the float's motion response and energy capture efficiency.

Description

Technical Field

[0001] This invention relates to the field of marine energy utilization technology, specifically to a helical self-sustaining wave energy generation device. Background Technology

[0002] Rapid economic and social development has led to a surge in energy demand. Traditional energy sources and their impact on the global environment have prompted people to seek greener alternative energy sources to promote energy transition. Wave energy is an abundant and usable energy source in the ocean, with the advantages of high energy density and low environmental impact, and has been widely used for power conversion.

[0003] The main utilization of wave energy resources is for wave power generation. Wave power generation devices can be installed on different offshore platforms. The electricity generated by wave power generation can meet the self-sufficiency of offshore platforms. Furthermore, the wave dissipation function of wave energy utilization devices can improve the stability of the platform by adjusting the parameters of the wave energy utilization devices according to actual working conditions.

[0004] Currently, there are many types of wave energy generation devices. Based on the energy extraction principle, existing wave energy utilization devices can be divided into oscillating water column type, wave-crossing type, and oscillating floating body type, etc. Among them, the oscillating floating body type wave energy device is the first choice for marine applications. It utilizes the energy in the floating or completely submerged oscillating body and has higher conversion efficiency.

[0005] Regarding the oscillating floating wave energy device, the inventor believes that the following technical problems still exist: In the existing oscillating floating wave energy device, the floating body is mainly connected to the power generation device through a single-link helical arm. The single-link helical arm is easily affected by waves, has poor stability under complex sea conditions, and is prone to pitching and rolling movements.

[0006] A single-link sway arm rotates in a circular motion around a point on a platform, generating electricity by rotating at a large angle in the vertical direction. Under complex sea conditions, if the single-link sway arm tilts to the left or right during vertical rotation, it will affect the size of its rotation angle, thereby affecting the wave energy conversion efficiency and the connection stability of the equipment.

[0007] Therefore, how to solve the above problems is a technical problem that urgently needs to be solved by those skilled in the art.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0009] To address the aforementioned technical problems, this invention provides a helical attitude self-sustaining wave energy generation device to solve the problems mentioned in the background art.

[0010] This invention provides the following technical solutions:

[0011] A self-sustaining wave energy generation device with a helical attitude includes:

[0012] Basic platform;

[0013] Energy harvesting mechanisms for capturing wave energy; and,

[0014] An energy conversion mechanism that converts the acquired wave energy into electrical energy; among which,

[0015] The energy harvesting mechanism includes a helical arm and a float;

[0016] The swing arm is a vertically arranged parallelogram linkage mechanism, with one side being a vertically fixed side and the other side being a vertically movable side; the vertically fixed side is fixed to the base platform, and the vertically movable side can move vertically up and down parallel to the vertically fixed side;

[0017] The float is fixed at the bottom of the vertically movable side.

[0018] Preferably, the base platform is a jacket platform, which includes four columns, a support truss that is cross-connected to adjacent columns, and a platform fixed to the top of the four columns.

[0019] Preferably, the swing arm includes a pivot seat, a pivot, an upper connecting rod assembly, a lower connecting rod assembly, a vertical movable rod, and a straight rod;

[0020] The rotating shaft seat is fixed on the platform;

[0021] The rotating shaft is rotatably connected to the rotating shaft seat;

[0022] The straight rod is horizontally fixed to the guide frame platform and located below the rotating shaft;

[0023] The upper link assembly includes upper link I and upper link II; the front ends of the two upper links are respectively fixed on the rotating shaft, and the tail ends of the two upper links are inclined towards each other.

[0024] The lower link assembly includes lower link I and lower link II; the front ends of the two lower links are respectively hinged to a straight rod; the tail ends of the two lower links are inclined towards each other.

[0025] The vertical movable rod is set vertically, with its upper end hinged to the tail ends of the upper connecting rod I and the upper connecting rod II, and its lower end hinged to the tail ends of the lower connecting rod I and the lower connecting rod II.

[0026] The float is fixed to the bottom end of the vertical movable rod;

[0027] In this mechanism, the rotating shaft and the straight rod form the vertical fixed side of the parallelogram linkage, while the vertical movable rod is the vertical movable side of the parallelogram linkage.

[0028] Preferably, the spatial relationships of the various structures in the parallelogram linkage mechanism satisfy:

[0029] The plane formed by the upper connecting rod I, the upper connecting rod II, and the rotating shaft is parallel to the plane formed by the lower connecting rod I, the lower connecting rod II, and the straight rod.

[0030] The connection points of the upper connecting rod I and the upper connecting rod II on the rotating shaft and the connection points of the lower connecting rod I and the lower connecting rod II on the straight rod are in the same vertical plane;

[0031] The hinge points of the vertical movable rod with upper connecting rod I and upper connecting rod II, and the hinge points of the vertical movable rod with lower connecting rod I and lower connecting rod II, are in the same vertical plane.

[0032] Preferably, the energy conversion mechanism includes a large gear, a small gear, a cam, a piston cylinder, pipelines, an accumulator, a valve group, a hydraulic motor, and a generator; wherein,

[0033] The large gear is fixed at the center of the rotating shaft;

[0034] The small gear meshes with the large gear for transmission.

[0035] The cam is fixed coaxially with the pinion;

[0036] The plunger cylinder is located above the cam, and its plunger rod is low-lying on the cam;

[0037] The accumulator, valve group, hydraulic motor and generator are all mounted on the platform and connected in sequence through pipelines;

[0038] The accumulator is connected to the inner cavity of the plunger cylinder via a pipeline.

[0039] Preferably, two symmetrically arranged bases are fixed on the platform near the large gear, and gear shafts are connected to the two bases. The small gear and cam are fixed to the gear shafts at intervals.

[0040] Preferably, the platform is provided with a trapezoidal frame spanning two bases, and the plunger cylinder is vertically fixed on the trapezoidal frame.

[0041] Preferably, the piston rod of the piston cylinder is provided with a roller at its bottom, and the roller is in contact with the cam.

[0042] Preferably, the float is a conical float.

[0043] The self-sustaining wave energy generation device with helical attitude provided in this embodiment of the invention has the following beneficial effects:

[0044] 1. The design of the heave arm utilizes the parallelogram principle, which enables the float to capture wave energy to have a good motion posture in the vertical direction, so that the float always maintains a vertical direction during heave motion, thereby greatly improving the motion response and energy capture efficiency of the float.

[0045] 2. In the parallelogram linkage mechanism of the helical arm, both the upper and lower linkage assemblies adopt a double-link design. The two double links form a triangular stable structure in two horizontal planes, which greatly improves the structural stability of the helical arm and gives it strong shear and torsional stability. At the same time, it can also reduce the length of the helical arm, increase the rotation angle during the energy capture process, and increase the motion response of the float.

[0046] 3. The heave arm is welded and fixed to the floating body, eliminating the influence of waves on the pitching and rolling of the floating body. This ensures that the floating body will not sway or rock even if it leaves the sea surface, greatly reducing the damage of waves to the wave energy power generation device. It can also effectively reduce the horizontal load of wave energy on the jacket platform.

[0047] 4. By adopting a star gear speed-increasing structure, the power input from the energy harvesting mechanism is converted into a low-torque, high-speed force, achieving a speed-increasing effect. Based on the star gear speed-increasing structure, the speed-increasing effect is amplified, which greatly improves the power generation, stability, and continuity of power generation.

[0048] 5. Through the ingenious design of alternating cams and piston-type hydraulic cylinders, the reversing function is achieved, allowing the piston cylinder to move in one direction during its stroke. In addition, compared with traditional piston-type hydraulic cylinders, the stroke of the piston rod can be greatly shortened.

[0049] 6. The use of energy storage and conversion via accumulators greatly improves the utilization efficiency of wave energy and the stability of power generation. Furthermore, the wave energy conversion device adopts a hydraulic energy storage system with a plunger cylinder, which can reduce the damage to the device system caused by instantaneous high-intensity wave energy. The hydraulic energy storage system based on accumulators can effectively develop and utilize instantaneous high-intensity or long-term low-intensity wave energy, and its main performance parameters can be optimized according to the wave energy characteristics of the construction site.

[0050] 7. All structural components in the energy capture and conversion mechanisms are located above the sea surface, which is beneficial for the installation, dismantling, long-term operation and maintenance of the wave energy power generation system. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the structure of the present invention from one angle;

[0052] Figure 2 This is a schematic diagram of the structure from angle two of the present invention;

[0053] Figure 3 This is a schematic diagram of a portion of the structure at angle one in this invention;

[0054] Figure 4 This is a structural schematic diagram of part of the structure from angle two in this invention;

[0055] Figure 5 For the present invention Figure 1 A magnified view of part A in the image;

[0056] Figure 6 For the present invention Figure 3 A magnified view of part B in the image;

[0057] Figure 7 For the present invention Figure 4 A magnified view of part C. Detailed Implementation

[0058] 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.

[0059] Example 1, see Figures 1-2 ;

[0060] To address the problems mentioned in the background section, this invention provides a helical attitude self-sustaining wave energy generation device to solve the aforementioned technical problems. The technical solution is as follows:

[0061] A self-sustaining wave energy generation device with a helical attitude includes:

[0062] Basic platform;

[0063] Wave energy capture mechanism 200; and,

[0064] An energy conversion mechanism 300 that converts the acquired wave energy into electrical energy; wherein,

[0065] The energy capture mechanism 200 includes a helical arm and a float 210;

[0066] The swing arm is a vertically arranged parallelogram linkage mechanism, with one side being a vertically fixed side and the other side being a vertically movable side; the vertically fixed side is fixed to the base platform, and the vertically movable side can move vertically up and down parallel to the vertically fixed side;

[0067] The float 210 is fixed at the bottom of the vertically movable side.

[0068] In this embodiment, the design of the swing arm utilizes the parallelogram principle, and its design concept is as follows:

[0069] 1. A parallelogram is a quadrilateral structure with a pair of parallel and equal sides;

[0070] 2. Design one side as vertically fixed, and design all connection points on the parallelogram as freely movable. Then the other side parallel to the vertically fixed side is the vertically movable side. No matter how the vertically movable side moves up or down, its direction of movement will always be parallel to the vertically fixed side, that is, it will always remain vertical.

[0071] 3. This heaving arm design allows the wave-capturing float to have a good motion posture in the vertical direction. The float always maintains a vertical orientation during heaving motion and will not tilt, thereby greatly improving the motion response and energy capture efficiency of the float.

[0072] In this embodiment, the float 210 is a conical float; the conical float has greater energy gain than other shapes such as cylinders, and among conical floats, its motion response and energy gain are the greatest in heave mode.

[0073] Example 2, see Figures 1-2 ;

[0074] In this embodiment, the basic platform is a jacket platform, which includes four columns 100, a support truss 120 that is cross-connected to adjacent columns 100, and a platform 110 fixed to the top of the four columns 100.

[0075] It should be noted that the specifications and dimensions of each structure on the jacket platform can be optimized according to the actual sea conditions; the dimensions of the top platform 110 should be designed to maximize the use of space, and the dimensions of the supporting truss 120 can be optimized based on actual stress calculations.

[0076] In this embodiment, the bottom of the column 100 in the jacket platform can be designed as a telescopic steel pipe pile, which can realize the free lifting and lowering of the platform height, providing favorable conditions for the modular installation, disassembly and maintenance of the wave energy power generation device; the structural design of the telescopic steel pipe pile can be selected as a conventional telescopic steel pipe pile.

[0077] Example 3, see Figure 1 , Figure 2 and Figure 5 ;

[0078] The swing arm includes a pivot seat 290, a pivot 280, an upper connecting rod assembly, a lower connecting rod assembly, a vertical movable rod 250, and a straight rod 240;

[0079] The rotating shaft seat 290 is fixed to the platform 110 by bolts or directly welded.

[0080] The rotating shaft 280 is rotatably connected to the rotating shaft seat 290;

[0081] The straight rod 240 is horizontally welded to the support truss 120 of the jacket platform, and the fixed position of the straight rod 240 is located below the rotating shaft 280;

[0082] The upper connecting rod assembly includes upper connecting rod I 260 and upper connecting rod II 270; the front ends of the two upper connecting rods are respectively welded and fixed to the rotating shaft 280, and the tail ends of the two upper connecting rods are inclined towards each other; upper connecting rod I 260, upper connecting rod II 270 and rotating shaft 280 can rotate synchronously;

[0083] The lower link assembly includes lower link I 220 and lower link II 230; the front ends of the two lower links are respectively hinged to the straight rod 240; the tail ends of the two lower links are inclined towards each other.

[0084] The vertical movable rod 250 is vertically arranged, and its upper end is hinged to the tail ends of the upper connecting rod I 260 and the upper connecting rod II 270 by a pin, and its lower end is hinged to the tail ends of the lower connecting rod I 220 and the lower connecting rod II 230 by a pin.

[0085] The float 210 is welded to the bottom end of the vertical movable rod 250. The float 210 is directly welded to the bottom end of the vertical movable rod 250. Under complex and changeable sea conditions, it can maintain the vertical oscillation motion in sync with the vertical movable rod 250 without producing tilting motions such as pitching, rolling or bowing.

[0086] The rotating shaft 280 and the straight rod 240 form the vertical fixed side of the parallelogram linkage mechanism, and the vertical movable rod 250 is the vertical movable side of the parallelogram linkage mechanism.

[0087] It should be noted that, based on the structural characteristics of a parallelogram, the length of the vertical movable rod 250 is strictly equal to the length of the left vertical plane formed by the four connection points of the upper and lower connecting rod assemblies.

[0088] In this embodiment, in the parallelogram linkage mechanism of the helical arm, both the upper and lower linkage assemblies adopt a double-link design, forming a triangular stable structure in two horizontal planes, which greatly improves the structural stability of the helical arm and gives it strong shear and torsional stability. At the same time, it can also reduce the length of the helical arm, increase the rotation angle during the energy capture process, and increase the motion response of the float.

[0089] In this embodiment, the spatial relationships of the various structures in the parallelogram linkage mechanism satisfy the following:

[0090] The plane formed by the upper connecting rod I 260, the upper connecting rod II 270 and the rotating shaft 280 is parallel to the plane formed by the lower connecting rod I 220, the lower connecting rod II 230 and the straight rod 240.

[0091] The connection points of the upper connecting rod I 260 and the upper connecting rod II 270 on the rotating shaft 280 and the connection points of the lower connecting rod I 220 and the lower connecting rod II 230 on the straight rod 240 are in the same vertical plane;

[0092] The hinge points of the vertical movable rod 250 with the upper connecting rod I 260 and the upper connecting rod II 270, and the hinge points of the vertical movable rod 250 with the lower connecting rod I 220 and the lower connecting rod II 230 are in the same vertical plane.

[0093] It should be noted that the spatial relationship of each structure in the parallelogram linkage mechanism can only be such that the pivot seat 290, pivot 280, upper linkage assembly, lower linkage assembly, vertical movable rod 250 and straight rod 240 form a strict parallelogram in the spatial plane if the above three conditions are met simultaneously.

[0094] Only in this way can the heave attitude self-sustaining wave energy harvesting device play its role, so that the float 210 can heave attitude self-sustaining under the action of waves and maintain its vertical attitude during operation, so as to achieve the expected effect.

[0095] Example 4, see Figures 1-7 ;

[0096] In this embodiment, the energy conversion mechanism 300 includes a large gear 340, a small gear 350, a cam 370, a piston cylinder 360, a pipeline 380, an accumulator 390, a valve group 331, a hydraulic motor 330, and a generator 320; wherein,

[0097] The large gear 340 is fixed at the center of the rotating shaft 280;

[0098] The small gear 350 meshes with the large gear 340 for transmission.

[0099] The cam 370 and the pinion 350 are coaxially fixed; the cam 370 and the pinion 350 can rotate synchronously.

[0100] The plunger cylinder 360 is located above the cam 370, and its plunger rod is connected to the cam 370. When the cam 370 rotates, it can push the plunger rod connected to its cam surface to move in one direction during the stroke, thereby driving the hydraulic oil to do work.

[0101] The accumulator 390, valve group 331, hydraulic motor 330 and generator 320 are all mounted on the platform 110 and connected in sequence through pipeline 380; the accumulator 390 can store energy, and when the energy reaches a certain amount, it is transmitted to the hydraulic motor 330 through the valve group 331.

[0102] The accumulator 390 is connected to the inner cavity of the plunger cylinder 360 via a pipeline 380.

[0103] In this embodiment, the pinion 350 and the gear 340 form a planetary gear speed-increasing structure. The pinion 350 and the gear 340 can rotate synchronously at a certain angle. Due to the multiple relationship between the rotation radii of the pinion and the gear, the rotational speed of the pinion 350 can be significantly increased.

[0104] In this embodiment, the ingenious design of the cam 370 and the piston cylinder 360 being in low contact can achieve the function of speed increase and reversal, so that the piston cylinder can move in one direction during the stroke. Compared with the traditional piston hydraulic cylinder, it can also greatly shorten the stroke of the piston rod.

[0105] In this embodiment, two symmetrically arranged bases 371 are fixed on the platform 110 near the large gear 340. Gear shafts are connected to the two bases 371, and the small gear 350 and cam 370 are fixed on the gear shafts at intervals.

[0106] In this embodiment, the platform 110 is provided with a trapezoidal frame 361 spanning two bases 371, and the plunger cylinder 360 is vertically fixed on the trapezoidal frame 361; the trapezoidal frame 361 is a supporting and fixing structure for the plunger cylinder 360.

[0107] In this embodiment, the piston rod of the piston cylinder 360 is provided with a roller 362 at the bottom, and the roller 362 is in contact with the cam 370. By providing the roller 362 at the bottom of the piston rod, the sliding friction is replaced by rolling friction during the low-contact movement of the piston rod and the cam 370, thereby reducing friction consumption and improving wave energy utilization.

[0108] In this embodiment, two cams 370 are provided, and the two cams 370 are symmetrically arranged on both sides of the pinion 350; correspondingly, two plunger cylinders 360 are also provided.

[0109] The plunger structure adopts a double-stroke working method with two plunger cylinders. The plunger rods of the two plunger cylinders are distributed in symmetrical positions on different cam mechanisms. In one motion cycle, the swing arm applies a force to each plunger cylinder for half a cycle. When one plunger cylinder finishes outputting oil in the first half cycle, the swing arm changes direction and continues to move, entering the second half cycle. The other plunger cylinder continues to output oil from the previous plunger cylinder, so that the oil can be output continuously without interruption.

[0110] In this embodiment, the energy conversion mechanism operates as follows:

[0111] 1. In the planetary speed-increasing gear structure, the large gear 340 is fixed on the rotating shaft 280 and can rotate synchronously with the rotation of the rotating shaft 280 by a certain angle; the small gear 350 in the planetary speed-increasing gear structure meshes with the large gear 340 and can rotate synchronously with the rotation of the large gear 340 by a certain angle.

[0112] 2. The pinion 350 and the cam 370 are coaxially fixed, and the cam 370 and the pinion 350 can rotate synchronously;

[0113] 3. The cam 370 is in low contact with the piston rod of the piston cylinder 360. When the cam 370 rotates, it can push the piston rod that is in low contact with its cam surface to make unidirectional motion in the stroke, thereby inputting the high-speed torque converted by the small gear 350 and the large gear 340 in the planetary speed-increasing gear structure to the piston cylinder 360.

[0114] 4. The plunger cylinder 360 moves in one direction during its stroke, thereby driving the hydraulic oil to do work. The work is transmitted to the accumulator 390 through the pipeline 380 to store the energy. When the energy reaches a certain amount, it is transmitted to the hydraulic motor 330 through the valve group 331. The hydraulic motor 330 drives the generator 320 to generate electricity.

[0115] The working principle and process of the heave attitude self-sustaining wave energy generation device provided in this embodiment of the invention are as follows: The conical float captures wave energy by the up-and-down vibration of the energy capture mechanism, converts it into rectangular energy with high torque and low speed of rotation of the large gear, and then converts it into high speed and low torque energy through the small gear of the planetary gear speed-increasing system. Then, it is transferred to the plunger cylinder through the alternating cam mechanism. After that, the energy is stored as pressure energy by the energy accumulator. Finally, the hydraulic energy is converted into mechanical energy by the hydraulic motor and supplied to the generator to be converted into electrical energy.

[0116] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0117] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0118] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solutions and concepts of this invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A helical self-sustaining wave energy generation device, characterized in that, include: Basic platform; Energy harvesting mechanisms for capturing wave energy; as well as, An energy conversion mechanism that converts the acquired wave energy into electrical energy; among which, The energy harvesting mechanism includes a helical arm and a float; The swing arm is a vertically arranged parallelogram linkage mechanism, with one side being a vertically fixed side and the other side being a vertically movable side; the vertically fixed side is fixed to the base platform, and the vertically movable side can move vertically up and down parallel to the vertically fixed side; The float is fixed to the bottom end of the vertically movable side; The basic platform is a jacket platform, which includes four columns, a support truss that is cross-connected to adjacent columns, and a platform fixed to the top of the four columns. The energy conversion mechanism includes a large gear, a small gear, a cam, a piston cylinder, pipelines, an accumulator, a valve group, a hydraulic motor, and a generator; wherein, The large gear is fixed at the center of the rotating shaft; The small gear meshes with the large gear for transmission. The cam is fixed coaxially with the pinion; The plunger cylinder is located above the cam, and its plunger rod is low-lying on the cam; Two cams are provided, symmetrically positioned on both sides of the pinion; correspondingly, two plunger cylinders are also provided. The accumulator, valve group, hydraulic motor and generator are all mounted on the platform and connected in sequence through pipelines; The accumulator is connected to the inner cavity of the plunger cylinder via a pipeline; The plunger structure adopts a double-stroke working method with two plunger cylinders. The plunger rods of the two plunger cylinders are distributed in symmetrical positions on different cam mechanisms. In one motion cycle, the swing arm applies a force to each plunger cylinder for half a cycle. When one plunger cylinder finishes outputting oil in the first half cycle, the swing arm changes direction and continues to move, entering the second half cycle. The other plunger cylinder continues to output oil from the previous plunger cylinder, so that the oil can be output continuously without interruption.

2. The heave-attitude self-sustaining wave energy generation device according to claim 1, characterized in that, The swing arm includes a pivot seat, a pivot, an upper connecting rod assembly, a lower connecting rod assembly, a vertical movable rod, and a straight rod; The rotating shaft seat is fixed on the platform; The rotating shaft is rotatably connected to the rotating shaft seat; The straight rod is horizontally fixed to the guide frame platform and located below the rotating shaft; The upper link assembly includes upper link I and upper link II; the front ends of the two upper links are respectively fixed on the rotating shaft, and the tail ends of the two upper links are inclined towards each other. The lower link assembly includes lower link I and lower link II; the front ends of the two lower links are respectively hinged to a straight rod; the tail ends of the two lower links are inclined towards each other. The vertical movable rod is set vertically, with its upper end hinged to the tail ends of the upper connecting rod I and the upper connecting rod II, and its lower end hinged to the tail ends of the lower connecting rod I and the lower connecting rod II. The float is fixed to the bottom end of the vertical movable rod; In this mechanism, the rotating shaft and the straight rod form the vertical fixed side of the parallelogram linkage, while the vertical movable rod is the vertical movable side of the parallelogram linkage.

3. The heave-attitude self-sustaining wave energy generation device according to claim 2, characterized in that, The spatial relationships of the components in the parallelogram linkage mechanism satisfy the following: The plane formed by the upper connecting rod I, the upper connecting rod II, and the rotating shaft is parallel to the plane formed by the lower connecting rod I, the lower connecting rod II, and the straight rod. The connection points of the upper connecting rod I and the upper connecting rod II on the rotating shaft and the connection points of the lower connecting rod I and the lower connecting rod II on the straight rod are in the same vertical plane; The hinge points of the vertical movable rod with upper connecting rod I and upper connecting rod II, and the hinge points of the vertical movable rod with lower connecting rod I and lower connecting rod II, are in the same vertical plane.

4. The heave-attitude self-sustaining wave energy generation device according to claim 1, characterized in that, Two symmetrically arranged bases are fixed on the platform near the large gear, and gear shafts are connected to the two bases. The small gear and cam are fixed to the gear shafts at intervals.

5. The heave-attitude self-sustaining wave energy generation device according to claim 1, characterized in that, The platform is provided with a trapezoidal frame spanning two bases, and the plunger cylinder is vertically fixed on the trapezoidal frame.

6. The heave-attitude self-sustaining wave energy generation device according to claim 1, characterized in that, The piston rod of the piston cylinder is equipped with a roller at its bottom, and the roller is in contact with the cam.

7. The heave-attitude self-sustaining wave energy generation device according to claim 1, characterized in that, The float is a conical float.

Images