Dual-mode wave energy harvesting and power generation device based on horizontal pendulum and movable slider

Abstract

This invention discloses a wave energy power generation technology, particularly a dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider. The device includes a housing, inside which a base and a top seat are installed. A fixed frame is installed under the base, and a bevel gear rectifier and a rotary generator are installed within the fixed frame. The top of the bevel gear rectifier is mounted in a bearing at the center of the base. A rectangular frame is installed between the base and the top seat, and a guide rod is installed within the rectangular frame. Limit springs are fitted at both ends of the guide rod. A permanent magnet linear generator stator and a translational slider containing a permanent magnet linear generator mover are mounted on the guide rod. Spring-fixed connecting rods are provided at both ends of the rectangular frame. Each end of the spring-fixed connecting rod is hinged to one end of a linear spring, and the other end of the linear spring is hinged to one end of a spring-oscillating connecting rod. The other end of the spring-oscillating connecting rod is hinged to the side of the translational slider. This invention has high reliability, simple structure, high cost-effectiveness, and is easy to put into production.

Description

Technical Field

[0001] This invention relates to a wave energy power generation technology, and more particularly to a dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider. Background Technology

[0002] Against the backdrop of increasingly scarce traditional fossil fuels and escalating environmental pressures, the development of clean and renewable energy has become a global consensus. Ocean wave energy has attracted significant attention due to its wide distribution, abundant reserves, high energy flux density, and great development potential. Pendulum wave energy generation devices, as a common technology, directly drive a generator through the oscillation of a pendulum under the influence of waves, offering advantages such as relatively simple structure and strong adaptability. However, traditional single-pendulum wave energy devices still face several technical challenges in practical applications.

[0003] Traditional horizontal parametric pendulum devices have the following shortcomings: ① They have a narrow energy acquisition spectrum and are less adaptable to changing sea conditions; ② Due to the dead zone effect, they are prone to getting stuck in the dead zone on the pendulum plane, which greatly reduces the amplitude of the parametric pendulum movement, resulting in reduced power generation efficiency and power generation stoppage; ③ The fixed parameters of the built-in device (especially the pendulum arm length) are difficult to adapt to complex sea conditions. Active control technology can improve this, but it will increase the complexity of the control device.

[0004] Chinese patent application CN119508119A discloses a wave energy generation device based on bistable random resonance, comprising: a cylindrical linear generator, a frame, and a bistable motion mechanism. This device can be directly installed on various suitable marine vessels. When the marine vessel sways under the action of waves, the cylindrical linear generator converts mechanical energy into electrical energy, which, through the bistable motion mechanism, induces the mover to perform bistable motion, thereby improving the device's capture bandwidth and efficiency for random wave frequencies. However, this device lacks adaptability to wave direction. The internal linear generator module is fixedly installed, meaning it can only generate electricity efficiently when the angle between the wave direction and the linear generator is very small. When the angle between the wave direction and the linear generator is large, it cannot drive the mover of the linear generator.

[0005] Chinese patent application CN121162443A discloses a marine carrier-driven wave energy generation device, comprising: a cylindrical linear generator, a linear motion slide, a bistable motion unit, and a steering adjustment unit. The cylindrical linear generator is placed on the linear motion slide, and the entire motor can slide. The upper slide rail is fixedly connected to the upper support frame in the bistable motion unit on both sides, and the lower slide rail is connected to the bistable motion frame in the bistable motion unit. The bistable motion unit is placed on the steering adjustment unit to form the overall structure of the power generation device. To adapt to different wave directions, this device adopts an active control strategy, adjusting the angle between the linear power generation system and the wave direction through a motor-driven gear structure. The gear structure increases the complexity of the system.

[0006] Chinese patent application CN118622568A discloses a mechanically rectified, actively stiffened, follower wave energy conversion device, including a mounting plate, an active stiffness-changing mechanism, a linear oscillation mechanism, a mechanical rectification mechanism, and a power generation module. The active stiffness-changing mechanism is driven by the linear oscillation mechanism, which is driven by the mechanical rectification mechanism, which is driven by the power generation module. The active stiffness-changing mechanism includes a spring with a helical sleeve for compressing the effective length nested on the spring. The spring stores energy and provides restoring force during oscillation. The mechanical rectification mechanism includes a one-way bearing and a planetary gear system, which can convert reciprocating oscillation into unidirectional continuous motion. This device lacks adaptability to wave direction; the overall power generation module can only generate electricity efficiently when the angle between the wave direction and the direction of motion of the linear generator is small. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider. While inheriting the advantage of low cost of mechanical power generation devices, it integrates all mechanical devices into the enclosed floating shell to ensure its reliability. It has a simple structure, high cost-effectiveness, is easy to put into production, and has great economic benefits.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider includes a housing. Inside the housing, a horizontally arranged base and a top seat are fixedly mounted in parallel. A fixed frame is installed under the base, and a bevel gear rectifier and a rotary generator are installed inside the fixed frame. The top of the bevel gear rectifier is mounted in a bearing at the center of the base via a rotating shaft. A rectangular frame is movably installed in the space between the base and the top seat. A guide rod is installed along the central length of the rectangular frame. Limit springs are fitted on both ends near the guide rod. A stator of a permanent magnet linear generator and a translational slider containing a permanent magnet linear generator mover are fitted on the guide rod and can slide parallel to the stator. Spring fixing rods are symmetrically arranged at both ends of the rectangular frame and are perpendicular to the plane of the rectangular frame. The two ends of the spring fixing rods are respectively hinged to one end of a linear spring, and the other end of the linear spring is hinged to one end of a spring swinging rod. The other end of the spring swinging rod is hinged to the side of the translational slider.

[0009] The shell is a sealed float, and its shape consists of an upper cylindrical body and a lower hemispherical shell.

[0010] Both the base and the top have hollowed-out sections, and a bearing is installed at the center of each section.

[0011] The rectangular frame is rectangular in shape, with a hollow main shaft extending outward from the center of the two long sides. The hollow main shaft is installed in the central bearing of the base and the top seat, allowing the rectangular frame to rotate.

[0012] The guide rod is fixedly installed at both ends in the middle of the two short sides of the rectangular frame, so that the guide rod is located at the center of the inside of the rectangular frame.

[0013] The translational slider has a circular hollow inside for mounting a permanent magnet linear generator rotor. The permanent magnet linear generator is connected to an external energy storage device via wires passing through the casing.

[0014] The spring swing linkage has two parts, which are respectively hinged to the opposite two sides of the translational slider.

[0015] One end of the limiting spring is fixed to the short side of the rectangular frame, and the other end is equipped with a buffer ring.

[0016] The spring fixing rod consists of two parallel rods, which are on the same plane as the guide rod. Each rod is symmetrically arranged along the short side of the rectangular frame, that is, it extends symmetrically to both sides perpendicularly along the outer side of the short side of the rectangular frame.

[0017] There are four linear springs in total. The outer end of each spring swing link is hinged to one end of two linear springs, and the other end of each of the two linear springs is hinged to the inner end of the corresponding spring fixing link.

[0018] The bevel gear rectifier consists of three bevel gears and two pairs of ratchet pawls. The upper bevel gear is coaxially fixed to the bevel gear drive linkage, which is fixed in a bearing at the center of the base. The vertical bevel gear is mounted inside the vertical side of the fixed frame via a bearing, and the lower bevel gear is mounted inside the bottom of the fixed frame via a bearing. The upper bevel gear and the vertical bevel gear, as well as the lower bevel gear and the vertical bevel gear, mesh and drive each other. Both the upper and lower bevel gears have ratchet pawls installed inside. The upper and lower ends of the ratchet drive shaft are mounted at the axis of the upper and lower bevel gears via bearings. The direction of rotation of the ratchet drive shaft is determined only by the ratchet pawls of the upper and lower bevel gears. The ratchet drive shaft has two ratchets rotating in the same direction, which engage with the ratchet pawls inside the upper and lower bevel gears. A rotary generator is mounted on the lower side of the fixed frame, and the rotating shaft of the rotary generator is fixedly connected to the ratchet drive shaft.

[0019] The built-in device is mounted inside the housing via a rotatable rectangular frame. In a stationary state, the translational slider, constrained by linear springs on both sides, is at two equilibrium points off the axis of rotation. Simultaneously, when the translational slider is at the axis of rotation, it is at an unstable equilibrium point. These two stable equilibrium points and one unstable equilibrium point constitute a bistable system with translational degrees of freedom. When the translational slider slides on the guide rod, it exhibits a bistable mechanism. When the translational slider is not at the center of rotation, it behaves like a horizontal pendulum. The mass of the pendulum is constrained by the springs and can move. As the speed changes, it is affected by centrifugal force, and the pendulum length can be adaptively adjusted.

[0020] The rectification principle of this invention is as follows: The upper bevel gear is fixedly connected to a rotatable rectangular frame. Driven by a horizontal pendulum composed of a translational slider, the rotatable frame rotates, causing the upper bevel gear to rotate. When the upper bevel gear rotates clockwise, the pawl inside the upper bevel gear drives the ratchet drive shaft to rotate clockwise. At this time, the lower bevel gear, driven by the vertical bevel gear, rotates counterclockwise. The pawl and ratchet of the lower bevel gear rotate in opposite directions and have no mutual influence. When the upper bevel gear rotates counterclockwise, the pawl and ratchet inside the upper bevel gear rotate in opposite directions and have no mutual influence. Meanwhile, the lower bevel gear rotates clockwise, which in turn drives the ratchet to rotate clockwise through the pawl of the lower bevel gear, thus achieving unidirectional rectification under different directions of the horizontal pendulum.

[0021] The beneficial effects of this invention are: The power generation device disclosed in this invention adopts a dual-mode energy harvesting method consisting of a horizontal pendulum and a horizontal slider. While inheriting the low cost advantage of mechanical power generation devices, it integrates all mechanical devices into the enclosed floating shell to ensure its reliability. It has a simple structure, high cost-effectiveness, is easy to put into production, and has great economic benefits.

[0022] This invention employs two pairs of linear springs with identical properties, and connects the linear springs and the translational slider through a spring swing linkage. This gives the translational slider a bistable property on the guide rod. At the same time, the entire linear motion module is arranged on a rotatable frame, and the translational slider is constrained by the linear springs to a position off the axis of rotation of the rotatable frame, making it a horizontal pendulum and giving it the properties of a horizontal pendulum. This design allows the translational slider to simultaneously possess the properties of a horizontal pendulum and linear motion, achieving dual-mode energy harvesting.

[0023] The device of the present invention uses a movable slider and is constrained by a linear spring and a limiting spring. In rotation mode, the distance from the center of mass of the translational slider to the axis of rotation of the rotatable frame can be automatically adjusted by centrifugal force and gravity. During rotation, it can achieve a smaller path to cross the dead zone, so that the horizontal pendulum can enter pure rotational motion under less wave excitation, thereby increasing the overall stability of the float and the power generation efficiency.

[0024] During operation, the device of the present invention can achieve hybrid dual-mode energy harvesting that combines rotation and translation, providing conditions for adapting to different sea conditions and effectively broadening the energy harvesting spectrum.

[0025] During linear single-mode motion, the device of the present invention is affected by the dead zone effect of the horizontal pendulum, and the horizontal pendulum no longer rotates significantly. It can always adjust the direction of linear motion to the direction of incoming waves, thus realizing automatic adaptation to multi-directional incoming waves in horizontal linear motion. Attached Figure Description

[0026] Figure 1 This is an overall diagram of the device; Figure 2 This is a diagram of the built-in device; Figure 3 This is a schematic diagram of the rectangular frame and its interior. Figure 4 This is a schematic diagram of the device's transmission. Figure 5 This is a diagram of the rectifier system; Figure 6 This is a schematic diagram of a ratchet drive without the lower bevel gear and the vertical bevel gear; Figure 7 This is a schematic diagram of a ratchet drive; Figure 8 This is a diagram of a pure rotation process (incoming wave direction is horizontal); Figure 9 This is a diagram of the critical state process (horizontal direction of incoming wave); Figure 10 This is a schematic diagram of the motion path in each state (the direction of incoming wave is horizontal); Among them, 101. Housing, 102. Top seat, 103. Base, 104. Fixed frame; 201. Rotatable rectangular frame, 202. Guide rod, 203. Stator, 204. Mover, 205. Translational slider, 206. Spring fixed link, 207. Spring swing link, 208. Linear spring, 209. Limiting spring, 301. Upper bevel gear, 302. Lower bevel gear, 303. Vertical bevel gear, 304. Pawl, 305. Ratchet, 306. Ratchet drive rod, 307. Rotary generator, 308. Bevel gear drive link. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0029] like Figures 1-10 As shown, a dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider includes a sealed housing 101. A top seat 102 and a base 103 are horizontally fixedly mounted parallel to each other on the cylindrical portion of the housing 101. Between the base 103 and the top seat 102, a rotatable rectangular frame 201 has two hollow main shafts vertically arranged and mounted on the base 103 and the top seat 102 via bearings. A guide rod 202 is horizontally fixedly installed inside the rotatable rectangular frame 201. A limit spring 209 is installed at the connection between the guide rod 202 and the rotatable rectangular frame 201. On the outside of the connection and fixing point of rod 202, a spring fixing link 206 perpendicular to guide rod 202 is horizontally installed. Linear springs 208 are hinged to both sides of the spring fixing link 206. There is a translational slider 205 on the guide rod 202. The translational slider 205 and the guide rod 202 are connected by a linear motor system consisting of a stator 203 and a mover 204 of a permanent magnet linear generator. The left and right sides of the translational slider 205 in the direction of movement are hinged to one end of the spring swing link 207. The other end of the spring swing link 207 is hinged to the linear springs 208 on the same side.

[0030] A fixed frame 104 is installed under the base 103. A rectifier system consisting of an upper bevel gear 301, a lower bevel gear 302, a vertical bevel gear 303, a pawl 304, a ratchet 305, and a ratchet drive rod 306, and a rotary generator 307 are installed within the fixed frame 104. The rectifier system, consisting of the upper bevel gear 301, lower bevel gear 302, vertical bevel gear 303, pawl 304, ratchet 305, and ratchet drive rod 306, has the upper bevel gear 301 coaxially fixed to a bevel gear drive link 308. The bevel gear drive link 308 is fixed inside a hollow main shaft at the bottom of the rotatable frame for transmission. The vertical bevel gear 303 is mounted on the vertical side of the fixed frame 104 via bearings, and the lower bevel gear 302 is mounted on the fixed frame 104 via bearings. On the bottom inner side of 4, the upper bevel gear 301 and the vertical bevel gear 303, and the lower bevel gear 302 and the vertical bevel gear 303 mesh with each other for transmission. The upper bevel gear 301 and the lower bevel gear 302 have ratchet pawls installed inside. A ratchet drive shaft is mounted on the axis of the upper bevel gear 301 and the lower bevel gear 302 via bearings. The direction of rotation of the ratchet drive shaft is determined only by the ratchet pawls of the upper and lower bevel gears. The ratchet drive shaft has two ratches rotating in the same direction, which engage with the ratchet pawls inside the upper and lower bevel gears. A rotary generator 307 is mounted on the lower side of the fixed frame 104, and the rotating shaft of the rotary generator is fixedly connected to the ratchet drive shaft.

[0031] The fully sealed shell 101 is composed of a cylindrical shell and a hemispherical shell, and is fixed to the sea surface by a mooring system; The base 103 and the top seat 102 have hollowed-out interiors and a bearing is installed in the center. The rotatable rectangular frame 201 is a rectangular symmetrical frame with a long horizontal part and a short vertical part. A hollow main shaft extends outward from the middle of the two horizontal parts and is mounted on the central bearing of the base 103 and the top seat 102. The guide rod 202 inside the rotatable rectangular frame 201 is in the same plane as the central axis of the horizontal part of the rotatable rectangular frame 201 and is fixedly installed on the vertical parts on both sides of the rotatable rectangular frame.

[0032] The stator 203 and the mover 204 of the permanent magnet linear generator are mounted on the guide rod 202 and the mover is mounted inside the translational slider 205. A limiting spring 209 passes through a guide rod 202 and is fixed to the vertical portion of a rotatable rectangular frame 201. The spring-fixing link 206 is installed on the vertical parts on both sides of the rotatable rectangular frame 201 and is on the same horizontal plane as the guide rod 202 inside the rotatable rectangular frame 201. One end of the linear spring 208 is hinged to the inward side of each end of the spring-fixing link 206.

[0033] The translational slider 205 has a circular hollow interior for mounting the mover 204 of the permanent magnet linear generator. Its movement direction is horizontal on both sides and it is hinged to the spring swing link 207. The spring swing linkage 207 has one end hinged to one side of the translation slider 205, and the other end hinged to one end of two linear springs 208 on the same side. Linear spring 208, there are two linear springs 208 on the same side. One end of the linear spring 208 is hinged to the top of the spring fixing link 206, and the other end is hinged to the top of the spring swing link 207. The linear springs 208 on both sides of the device have the same properties. The translational slider 205 has a space reserved inside for installing the mover 204 of the permanent magnet linear generator. It is located at the center of the left and right sides of the guide rod 202 and at the same horizontal plane as the guide rod 202.

[0034] The built-in device is mounted inside the housing via a rotatable rectangular frame 201. In a stationary state, the translational slider 205, constrained by linear springs 208 on both sides, is at an equilibrium point offset from the hollow main axis of the rotatable rectangular frame 201. There are two such equilibrium points. Simultaneously, when the translational slider 205 is located at the hollow main axis of the rotatable rectangular frame 201, it is at an unstable equilibrium point. These two stable equilibrium points and one unstable equilibrium point form a bistable system with translational degrees of freedom. The translational slider 205 exhibits a bistable mechanism when sliding on the guide rod 202. When the translational slider 205 is not at the center of the hollow main axis of the rotatable rectangular frame 201, it behaves like a horizontal pendulum. Constrained by the linear springs 208, the translational slider 205 can move. As its speed changes, it is affected by centrifugal force, and the pendulum length (the distance from the translational slider 205 to the center of rotation) can be adaptively adjusted.

[0035] The power generation principle will be explained next by using the lower wave high values ​​of the same period from largest to smallest: The power generation device is placed on the sea surface by mooring. Under the action of the waves, the power generation device will sway and roll, and the central main axis will move and will no longer be perpendicular to the horizontal plane. When the direction of the incoming wave is not parallel to the rotatable rectangular frame, the translational slider 205 will swing under the combined action of gravity and wave force, thereby driving the rotatable rectangular frame 201 to swing. When the direction of the incoming wave is parallel to the rotatable rectangular frame 201, the translational slider 205 will translate under the combined action of gravity and wave force, thereby driving the mover 204 of the permanent magnet linear generator to move on the stator 203 of the permanent magnet linear generator to generate electricity.

[0036] Under strong excitation, the built-in device behaves like a horizontal pendulum, and its motion mode is pure rotational motion (e.g. Figure 8(As shown) At this time, the internal translational slider 205 rotates at a relatively high speed. Due to the influence of centrifugal force, the translational slider 205 is at its longest distance from the rotation center (maximum pendulum length). The limiting spring 209 is compressed, and the motion mode is stable, with the pendulum length changing little within one rotation cycle. The motion process of the built-in device is as follows: When the shell remains horizontal under the waves, the translational slider 205 is located near the 12 o'clock position (0π) on the side perpendicular to the direction of the incoming wave. At this time, the speed is minimum. The shell 101 swings to the right to its limit, and the translational slider 205 rotates clockwise under the excitation of gravity, reaching the rightmost position. The speed of the translational slider 205 reaches its maximum. The shell 101 swings to the left to the horizontal position, and the translational slider 205 continues to move clockwise, overcoming gravity and consuming kinetic energy, thus reducing its speed. The process of the next half cycle is similar to that described above. At this time, the centrifugal force is mainly overcome by the limiting spring 209. The displacement range of the limiting spring 209 is not sensitive to the change in centrifugal force at this time, and the pendulum length is relatively fixed.

[0037] As the excitation decreases, a critical transitional state between pure rotational motion and rotational translational motion occurs (e.g., Figure 9 As shown), the elliptical motion, under stable operation, the motion process of the built-in device is as follows: When the housing 101 is in equilibrium, the translational slider 205 is located near the 6 o'clock position (1π) on the side perpendicular to the direction of the incoming wave, at which point the speed is at its maximum. The housing 101 is rocked to the right to its limit, and the translational slider 205 moves clockwise. During the upward movement, it overcomes gravity, and the speed decreases. At this time, the centrifugal force decreases and is affected by gravity, so the pendulum length decreases. The translational slider 205 rotates to the leftmost position (1.5π), and the housing 101 is rocked to the left to the horizontal position (2.0π or 0π). The translational slider 205 rotates clockwise and accelerates under the excitation of gravity, and the pendulum length returns to the pendulum length of the previous horizontal position.

[0038] As the excitation decreases, the motion becomes rotational and translational (e.g., Figure 10 As shown), the movement process of the built-in device is as follows: When the housing 101 is in equilibrium, the translation slider 205 is located at the 6 o'clock position (1π) on the side perpendicular to the direction of the incoming wave. At this time, the speed is the maximum. The housing 101 is rocked to the right to the limit. The translation slider 205 rotates clockwise. When it approaches the 9 o'clock position (1.5π), the speed decreases, which causes the centrifugal force to decrease. At the same time, it is affected by gravity (the pitch amplitude is greater than the next state, so the component of gravity is large). The translation slider 205 slides to the right along the component of the guide rod 202, passing the equilibrium point on the left and moving to the right side. The housing 101 is rocked to the left to the horizontal position. The pendulum rotates counterclockwise to the 0 o'clock position (0π). The second half of the cycle is similar.

[0039] As the excitation decreases, the motion becomes rotational oscillation (e.g., ...). Figure 10As shown), the motion process of the built-in device is as follows: When the housing 101 is in equilibrium, the translational slider 205 is located at the 6 o'clock position (1π) on the side perpendicular to the direction of the incoming wave. At this time, the speed is the maximum. The housing 101 is rocked to the right to its limit, and the translational slider 205 rotates clockwise. When it approaches the 9 o'clock position (1.5π), the speed decreases, which leads to a decrease in centrifugal force. However, due to the decrease in the swing amplitude, the component of gravity on the guide rod 202 cannot make the pendulum cross the potential barrier in the middle of the guide rod 202. At the same time, the speed of the translational slider 205 is not enough to support it to cross the 9 o'clock position (1.5π) to the other side. The housing 101 is rocked to the left to the equilibrium position. Under the excitation of gravity, the translational slider 205 begins to rotate counterclockwise to the 6 o'clock position. The second half of the cycle is similar.

[0040] As the excitation decreases, the motion becomes linear translation (e.g., ...). Figure 10 As shown, due to the decrease in excitation, the horizontal pendulum gradually enters the "dead zone," reaching a position in the same direction as the incoming wave, either at the 3 o'clock or 9 o'clock position. At this point, the horizontal pendulum's properties gradually decrease, while its horizontal sliding properties are enhanced. In this state, the horizontal pendulum cannot overcome the dead zone and can only swing in the same direction as the incoming wave. The oscillation stops, causing the centrifugal force to approach zero. The translational slider 205 is located at the equilibrium point, and its linear motion direction is consistent with the incoming wave direction. This is the optimal excitation state (compared to the previous state, when the shell sways left and right, the slider's translational degree of freedom has a larger angle with the incoming wave direction, resulting in rotation; now, because the horizontal pendulum is in the dead zone, the translational degree of freedom of the slider is in the same direction as the incoming wave, thus the excitation is greater). At this point, the translational slider 205 can overcome the potential barrier and move linearly when the wave excites it. When the shell 101 sways left and right, the translational slider 205 moves back and forth between the two equilibrium points, driving the permanent magnet linear generator to generate electricity.

[0041] Rectification Principle: The upper bevel gear 301 is fixedly connected to the rotatable rectangular frame 201 via the bevel gear transmission link 308. Driven by the horizontal pendulum formed by the translational slider 205, the rotatable rectangular frame 201 rotates, causing the upper bevel gear 301 to rotate. When the upper bevel gear 301 rotates clockwise, the pawl 304 inside the upper bevel gear drives the ratchet drive shaft to rotate clockwise. At this time, the lower bevel gear 302, driven by the vertical bevel gear 303, rotates counterclockwise. The pawl 304 and ratchet 305 of the lower bevel gear rotate in opposite directions and have no mutual influence. When the upper bevel gear 301 rotates counterclockwise, the pawl 304 and ratchet 305 inside the upper bevel gear rotate in opposite directions and have no mutual influence. Meanwhile, the lower bevel gear 302 rotates clockwise, which in turn drives the ratchet 305 to rotate clockwise via the pawl 304 of the lower bevel gear, thus achieving unidirectional rectification under different directions of the horizontal pendulum. The ratchet 305 drives the rotary generator 307 to generate electricity via the ratchet transmission link 306. (The ratchet and pawl are set the same in both the upper and lower bevel gears.) The power generation device is placed on the sea surface by mooring. Under the action of the waves, the power generation device will roll and sway, and the central main axis will move and will no longer be perpendicular to the horizontal plane. When the direction of the incoming wave is not parallel to the rotatable rectangular frame, the translational slider 205 will swing under the combined action of gravity and wave force, thereby driving the rotatable rectangular frame 201 to swing, and then driving the rotary generator 307 to generate electricity through the rectification system.

[0042] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider, comprising a housing, characterized in that, Inside the housing, a horizontally arranged base and top seat are fixedly installed in parallel. A fixed frame is installed under the base, and a bevel gear rectifier and a rotary generator are installed inside the fixed frame. The top of the bevel gear rectifier is mounted in a bearing at the center of the base via a rotating shaft. A rectangular frame is movably installed in the space between the base and the top seat. A guide rod is installed along the central length of the rectangular frame. Limit springs are fitted on both ends near the guide rod. The stator of the permanent magnet linear generator and a translational slider containing the mover of the permanent magnet linear generator are fitted on the guide rod and can slide parallel to the stator. Spring fixing rods are symmetrically arranged at both ends of the rectangular frame and are perpendicular to the plane of the rectangular frame. The two ends of the spring fixing rods are respectively hinged to one end of a linear spring, the other end of the linear spring is hinged to one end of a spring swinging rod, and the other end of the spring swinging rod is hinged to the side of the translational slider.

2. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, The shell is a sealed float, and its shape consists of an upper cylindrical body and a lower hemispherical shell.

3. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, Both the base and the top have hollowed-out sections, and a bearing is installed at the center of each section.

4. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, The rectangular frame is rectangular in shape, with a hollow main shaft extending outward from the middle of the two long sides. The hollow main shaft is mounted on the central bearing of the base and the top seat, allowing the rectangular frame to rotate. The guide rod is fixed at both ends at the middle of the two short sides of the rectangular frame, so that the guide rod is located at the center inside the rectangular frame.

5. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, The translational slider has a circular hollow inside for mounting a permanent magnet linear generator rotor. The permanent magnet linear generator is connected to an external energy storage device via wires passing through the casing.

6. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, The spring swing linkage has two parts, which are respectively hinged to the opposite two sides of the translational slider.

7. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, One end of the limiting spring is fixed to the short side of the rectangular frame, and the other end is equipped with a buffer ring.

8. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, The spring fixing rod consists of two parallel rods, which are on the same plane as the guide rod. Each rod is symmetrically arranged along the short side of the rectangular frame, that is, it extends symmetrically to both sides perpendicularly along the outer side of the short side of the rectangular frame.

9. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, There are four linear springs in total. The outer end of each spring swing link is hinged to one end of two linear springs, and the other end of each of the two linear springs is hinged to the inner end of the corresponding spring fixing link.

10. The dual-mode wave energy harvesting and power generation device based on a horizontal pendulum and a movable slider as described in claim 1, characterized in that, The bevel gear rectifier consists of three bevel gears and two pairs of ratchet pawls. The upper bevel gear is coaxially fixed to the bevel gear drive linkage, which is fixed in a bearing at the center of the base. The vertical bevel gear is mounted inside the vertical side of the fixed frame via a bearing, and the lower bevel gear is mounted inside the bottom of the fixed frame via a bearing. The upper bevel gear and the vertical bevel gear, as well as the lower bevel gear and the vertical bevel gear, mesh and drive each other. Both the upper and lower bevel gears have ratchet pawls installed inside. The upper and lower ends of the ratchet drive shaft are mounted at the axis of the upper and lower bevel gears via bearings. The direction of rotation of the ratchet drive shaft is determined only by the ratchet pawls of the upper and lower bevel gears. The ratchet drive shaft has two ratchets rotating in the same direction, which engage with the ratchet pawls inside the upper and lower bevel gears. A rotary generator is mounted on the lower side of the fixed frame, and the rotating shaft of the rotary generator is fixedly connected to the ratchet drive shaft.

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