A wave energy harvesting device and method for realizing multidimensional wave energy conversion

Abstract

This disclosure relates to the field of wave energy conversion technology, and proposes a wave energy harvesting device and method for realizing multi-dimensional wave energy conversion. The device includes a support frame, a gear-crank linkage mechanism, a main shaft hydraulic rod, and a float. The support frame includes an inner and outer support frame that are rotatably connected, and the gear-crank linkage mechanism is fixed to the support frame. The gear-crank linkage mechanism, the main shaft hydraulic rod, and the float are connected in sequence. The main shaft hydraulic rod oscillates under the drive of the float, and collects energy by stretching and compressing hydraulic oil. The energy is then converted into electrical energy by connecting to a first gear generator through the gear-crank linkage mechanism. This disclosure integrates multiple energy harvesting modules, enabling multi-dimensional collection of wave energy, thereby improving the utilization rate of wave energy and reducing the cost of wave energy power generation.

Description

Technical Field

[0001] This disclosure relates to the technical field of wave energy conversion devices, specifically to a wave energy harvesting device and method for realizing multidimensional wave energy conversion. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] The inventors discovered in their research that devices for generating electricity using ocean wave energy mainly include the following:

[0004] (1) Head difference type: This device introduces ocean waves into a high-level reservoir to form a water level difference (head), and then uses the water head to directly drive the turbine generator set to generate electricity. The utilization rate is very low.

[0005] (2) Air pressure difference type: Through the container device, the change in water surface position caused by the wave causes the air volume in the container to change, compressing the air in the container, and using the compressed air to drive the impeller, which drives the power generation device to generate electricity.

[0006] (3) Mechanical hydraulic type, which uses the motion of waves to drive the float and other moving mechanical parts, and then the moving mechanical parts drive the intermediate medium such as oil or water, and drive the power generation device to generate electricity through the intermediate medium.

[0007] Existing wave energy generation devices only utilize one-dimensional energy from the mechanical energy of waves, resulting in low energy utilization. They cannot absorb the disordered, dispersed, low-density, and unstable three-dimensional wave energy, leading to high power generation costs. Summary of the Invention

[0008] To address the aforementioned issues, this disclosure proposes a wave energy harvesting device and method for realizing multidimensional wave energy conversion. It integrates multiple energy harvesting modules, enabling the harvesting of wave energy in multiple dimensions. It can harvest wave energy with multiple degrees of freedom, including generalized heave and roll, thereby increasing the amount of wave energy captured within a limited space, improving the utilization rate of wave energy, and reducing the cost of wave power generation.

[0009] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0010] One or more embodiments provide a wave energy harvesting device for realizing multidimensional wave energy conversion, including a support, a gear-crank connecting rod mechanism, a main shaft hydraulic rod, and a float;

[0011] The support includes a rotatable inner support and an outer support. The gear-crank connecting rod mechanism is fixed on the inner support. The gear-crank connecting rod mechanism, the main shaft hydraulic rod and the float are connected in sequence. The main shaft hydraulic rod makes a rocking motion under the drive of the float. It collects energy by pushing the hydraulic oil through stretching and compression, and converts it into electrical energy by connecting to the gear generator through the gear-crank connecting rod mechanism.

[0012] One or more embodiments provide a wave energy harvesting method for a wave energy harvesting device that realizes multidimensional wave energy conversion, comprising the following steps:

[0013] Acquire wave detection data and determine the energy harvesting method based on the detection data;

[0014] When a wave comes from one direction and the main energy capture method is lateral and longitudinal rolling, the telescopic rod of the control gear core is pulled down, causing the upper gear to disengage from other helical gears.

[0015] When the main energy harvesting method is bow yaw, the control telescopic rod is compressed upwards, and the upper gear meshes with other helical gears.

[0016] Compared with the prior art, the beneficial effects of this disclosure are as follows:

[0017] (1) In this disclosure, a gear-crank connecting rod mechanism is arranged on the inner support, which can rotate 360 ​​degrees with the inner support, and the position and orientation of the device can be adjusted so that the device can collect wave energy from all directions.

[0018] (2) This disclosure achieves the transformation of the device structure of the gear core through flexible control, which can efficiently capture wave energy according to the wave shape and improve the power generation efficiency.

[0019] The advantages of this disclosure, as well as its additional advantages, will be described in detail in the following specific embodiments. Attached Figure Description

[0020] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute a limitation thereof.

[0021] Figure 1 This is a first-view structural schematic diagram of the wave energy harvesting device according to Embodiment 1 of this disclosure;

[0022] Figure 2(a) is a second-view structural schematic diagram of the wave energy harvesting device of Embodiment 1 of this disclosure;

[0023] Figure 2(b) is a schematic diagram of the wave energy harvesting device with a second gear generator in Embodiment 1 of this disclosure;

[0024] Figure 3This is a schematic diagram of the first state structure of the gear core 100 according to Embodiment 1 of this disclosure;

[0025] Figure 4 This is a schematic diagram of the second state structure of the gear core 100 according to Embodiment 1 of this disclosure;

[0026] Figure 5 This is a schematic diagram of the crank-connecting rod mechanism 200 according to Embodiment 1 of this disclosure;

[0027] Figure 6 This is a schematic diagram of the main shaft hydraulic rod 300 according to Embodiment 1 of this disclosure;

[0028] Figure 7 This is a schematic diagram of the structure of the float 400 in Embodiment 1 of this disclosure;

[0029] Figure 8 This is an exploded view of the structure of the float 400 according to Embodiment 1 of this disclosure;

[0030] Among them: 100, gear core; 200, crank connecting rod mechanism; 300, main shaft hydraulic rod; 400, float; 500, bracket; 600, first gear generator; 601, second gear generator.

[0031] 1. Upper gear, 2. Telescopic rod, 3. First bearing, 4. First side gear, 5. Second bearing, 6. Lower gear, 7. Third bearing, 9. Fourth bearing, 10. Second side gear, 11. Connecting rod, 12. Slider, 13. Protective sleeve, 14. Hydraulic rod body, 15. Inlet, 16. Outlet, 17. Float support, 18. Hydraulic power generation system, 19. Lower housing, 20. Solid ball, 21. Ordinary hinge, 22. First rod body, 23. Second rod body;

[0032] 5-1. Cylindrical bearing; 5-2. Bearing ring; 41. Fixed column. Detailed Implementation

[0033] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0035] It should be noted that the terminology used herein is for descriptive purposes only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. It should be noted that, without conflict, the various embodiments and features within those embodiments can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0036] Example 1

[0037] In one or more of the technical solutions disclosed in the embodiments, such as Figures 1 to 8 As shown, a wave energy harvesting device for realizing multidimensional wave energy conversion includes: a support 500, a gear-crank connecting rod mechanism, a main shaft hydraulic rod 300, and a float 400;

[0038] The bracket 500 includes an inner bracket and an outer bracket that are rotatably connected. The gear-crank connecting rod mechanism is fixed on the bracket. The gear-crank connecting rod mechanism, the main shaft hydraulic rod 300 and the float 400 are connected in sequence. The main shaft hydraulic rod 300 swings under the drive of the float 400. It collects energy by pushing hydraulic oil through stretching and compression, and converts it into electrical energy by connecting to the first gear generator 600 through the gear-crank connecting rod mechanism.

[0039] In this embodiment, a gear-crank connecting rod mechanism is arranged on the inner support, which can rotate 360 ​​degrees with the inner support, and the position and orientation of the device can be adjusted so that the device can collect wave energy from all directions.

[0040] like Figure 1 As shown, the bracket 500 includes an inner bracket and an outer bracket. The outer bracket is a fixed bracket used to support the entire device. The upper contact positions of the inner bracket and the outer bracket are connected by a cylindrical bearing 5-1, and the lower contact positions of the inner bracket and the outer bracket are connected by a bearing ring 5-2, so that the inner bracket can rotate 360 ​​degrees relative to the outer bracket.

[0041] Specifically, the inner and outer supports adopt a frustum-shaped frame structure, which facilitates rotation.

[0042] Furthermore, in this embodiment, the inner and outer supports rotate relative to each other. In order to achieve sufficient collection, a second gear generator 601 can be arranged on the inner support to collect wave energy by means of the relative rotation of the inner and outer supports.

[0043] As shown in Figure 2(b), a second gear generator 601 is provided at the point where the inner support and the outer support rotate relative to each other. The second gear generator 601 is fixed on the bearing on the inner support, and the power transmission end of the second gear generator 601 is meshed with the gear of the outer support.

[0044] like Figure 1 As shown, the gear-crank-connecting rod mechanism is housed within the inner support, including a gear core 100 and a crank-connecting rod mechanism 200. The gear core 100 converts the energy collected by the main shaft hydraulic rod 300 into gear rotation, and the crank-connecting rod mechanism 200 converts the gear rotation into the reciprocating motion of the crank-connecting rod, which is transmitted to the first gear generator 600 for power generation. The upper end of the gear core is fixedly connected to the outer support, and the gear core is connected to the side wall of the inner support via the crank-connecting rod mechanism.

[0045] Optionally, the gear core 100 includes four helical gears that mesh sequentially, each helical gear forming a quadrilateral as a side. The gear disk of the upper gear 1 is fixedly connected to the central column of the outer support. The central column of the outer support is connected to the inner support through a cylindrical bearing 5-1. The central column of the outer support extends into the inner support and is fixedly connected to the gear disk of the upper gear. The gear disk of the lower gear 6 is connected to the main shaft hydraulic rod 300. A cross shaft frame is provided in the middle of the quadrilateral formed by the meshing helical gears, and each helical gear is rotatably connected to the cross shaft frame.

[0046] A further technical solution is that the rotatable connection between the cross shaft bracket and the helical gear can be achieved through a bearing connection;

[0047] Specifically, the structure of the core gear in this embodiment is as follows: Figure 3 As shown, the gear core includes four helical gears that mesh with each other, namely upper gear 1, first side gear 4, lower gear 6, and second side gear 10. The gear surfaces of upper gear 1 and lower gear 6 are horizontally arranged, while the gear surfaces of first side gear 4 and second side gear 10 are vertically arranged.

[0048] The upper gear 1 is fixedly connected to the support column of the upper outer bracket, and the lower gear 6 is connected to the lower main shaft hydraulic rod 200.

[0049] The rotatable connection between the cross shaft frame and the helical gear can be achieved through bearings. The cross shaft frame is equipped with a first bearing 3, a second bearing 5, a third bearing 7, and a fourth bearing 9. Each of the four bearings has two sections of a helical gear, which respectively enable the first side gear 4, the lower gear 6, the upper gear 1, and the second side gear 10 of the helical gear to rotate around the central cross shaft.

[0050] Furthermore, a telescopic rod 2 is provided on the bracket connected to the upper gear 1 on the cross shaft frame, which enables the upper gear 1 to mesh and disengage with other helical gears, that is, to mesh and disengage with the first side gear 4 and the second side gear 10, and controls the overall structure below the upper gear 1 to move downward and upward.

[0051] Furthermore, the axis of the cross shaft frame is configured as a hinge structure, including a hinge ball 8 and a hinge seat. The hinge ball 8 is adapted to the hinge seat, the hinge seat is connected to the lower end of the telescopic rod 2, and the hinge ball 8 is rotatably connected to the lower gear 6.

[0052] Specifically, the upper part of the hinge seat is fixedly connected to the upper telescopic rod 2; the left and right sides of the hinge seat are rotatably connected to the vertically arranged left and right helical gears, that is, the left and right sides of the hinge seat are connected to the first bearing 3 and the fourth bearing 9; the center ball support rod of the hinge ball 8 is connected to the bearing 5.

[0053] In use, the upper end of the telescopic rod 2 is connected to the third bearing 7, which can drive the entire cross shaft, and the lower end is fixedly connected to the ball joint 8. The telescopic rod 2 can control the overall downward and upward movement of the structure except for the gear 1, so as to realize the meshing and disengagement of the upper gear 1 with other helical gears.

[0054] When the wave is unidirectional and the main energy capture method is horizontal and vertical rolling, the telescopic rod 2 is pulled down, the upper gear 1 disengages from the first side gear 4, the lower gear 6, and the second side gear 10, and the reciprocating rotation around the horizontal axis of the cross is the main action. The submersion depth of the entire energy capture device can be adjusted according to the size of the incoming wave, and the center of gravity of the device can be changed to achieve the maximum energy capture effect.

[0055] When the main energy harvesting method is bow yaw, the telescopic rod 2 is compressed upward, and the upper gear 1 meshes with other helical gears, mainly reciprocating around the longitudinal axis of the cross shaft.

[0056] The gear core structure set in this embodiment can receive wave energy and perform actions in multiple directions, and can collect wave energy in different directions.

[0057] Optionally, the crank-connecting rod mechanism 200 is used to transmit the mechanical energy of the gear core's movement to the first gear generator 600, enabling the conversion of mechanical energy into electrical energy. For example... Figure 5 As shown, the crank-connecting rod mechanism 200 includes a connecting rod 11, a slider 12 with a rack, and a slide bar; the connecting rod 11 is connected to a helical gear in the gear core, the helical gear drives the connecting rod 11 to move, and the connecting rod 11 drives the slider 12 to move on the slide bar; the rack on the slider 12 is meshed with the power transmission end of the first gear generator 600 through a rack and pinion engagement, and the power transmission end of the first gear generator 600 rotates under the drive of the rack on the slider 12.

[0058] The rotation of the helical gear drives the connecting rod 11 to push the slider 12 with a rack to reciprocate on the slider, thereby driving the motor to generate electricity.

[0059] In this embodiment, two sets of crank-connecting rod mechanisms 200 are provided and symmetrically distributed, respectively connected to the first side gear 4 and the second side gear 10. Fixed posts 41 are respectively provided on the first side gear 4 and the second side gear 10, and are connected to the connecting rod 11 of the crank-connecting rod mechanism 200 through the fixed posts 41.

[0060] In some embodiments, the upper end of the main spindle hydraulic rod 300 is fixedly connected to the gear core, and the lower end is fixed to the float 400. Specifically, as shown... Figure 6 As shown, the main shaft hydraulic rod 300 includes a hydraulic rod body 14, hydraulic oil inlets 15 and outlets 16 located at both ends of the hydraulic rod, and a protective sleeve 13 located at the upper end of the hydraulic rod body 14; the upper end of the shaft hydraulic rod 300 is fixed to the lower gear 6 of the gear core, and the lower end is fixed to the float 400; the hydraulic oil inlets 15 and outlets 16 are connected to a flow motor.

[0061] The main shaft hydraulic rod 300, through the up-and-down floating of the float 400, drives the rod body 14 of the main shaft hydraulic rod 300 to perform stretching and compression movements, which in turn drives the flow motor to generate electricity, thus realizing further harvesting of wave energy.

[0062] The protective sleeve 13 is designed to prevent the main spindle hydraulic rod 300 from breaking due to excessive torque during swing.

[0063] In some embodiments, the float 400 includes a housing and a built-in ball-hydraulic rod mechanism disposed within the housing; the built-in ball-hydraulic rod mechanism includes a mounting plate, a hydraulic power generation system 18, a built-in hydraulic rod, and a solid ball 20; the mounting plate is fixedly disposed within the float housing, the hydraulic power generation system 18 is disposed on the mounting plate, and the built-in hydraulic rod is hinged to the underside of the mounting plate; the solid ball 20 is suspended from the mounting plate by symmetrical built-in hydraulic rods. When the float 400 is subjected to wave action, it moves, causing the built-in solid ball 20 to move in an approximately elliptical trajectory, which in turn causes the built-in hydraulic rod to stretch and compress, transmitting hydraulic kinetic energy to the hydraulic power generation system 18 and converting it into electrical energy.

[0064] Specifically, the float 400 includes a float support 17 and a lower housing 19, the lower housing 19 being gyroscope-shaped. The float support 17 is fixedly connected to the upper end face of the lower housing, and a ball-hydraulic rod mechanism can be fixedly mounted thereon.

[0065] Specifically, the built-in hydraulic rods include a first rod body 22 and a second rod body 23, which are hinged to the bottom of the mounting plate via a common hinge 21. In this embodiment, four rods are provided and arranged symmetrically.

[0066] In this embodiment, the float 400 is located at the lower end of the main shaft hydraulic rod 300. When subjected to waves, it can drive the main shaft hydraulic rod 300 to oscillate around the gear core. The built-in ball-hydraulic rod mechanism forms a wave energy conversion device within the float. The float 400 itself can also collect wave energy through the relative movement of the built-in ball and the outer shell. The efficiency of wave energy power generation is improved through the combined action of multiple modules.

[0067] One feasible solution is a hydraulic power generation system 18 in which a hydraulic cylinder and a flow generator are set up for each built-in hydraulic rod, and the hydraulic rod, hydraulic cylinder and flow generator are connected in sequence; the hydraulic rod performs a stretching and contracting motion, squeezing the hydraulic oil in the cylinder cavity of the hydraulic cylinder to flow, thereby driving the flow generator to generate electricity.

[0068] In this embodiment, four hydraulic rods are provided, which correspond to four sets of hydraulic cylinders and a flow generator.

[0069] The specific structure is as follows: Figure 7 and Figure 8 As shown, the upper end of the float support 17 is fixedly connected to the lower end of the main shaft hydraulic rod 300, and the hydraulic power generation system 18 is fixed to the float support 17 by bolts. Electrical energy is integrated through the combined movement of the four symmetrically arranged built-in hydraulic rods at the lower end. The solid sphere 20 is the core of the built-in wave energy conversion device. Driven by the wave action, the float moves, causing the built-in solid sphere 20 to move in an approximately elliptical trajectory. The energy generated by the relative motion between the solid sphere 20 and the outer shell is captured through the combined action of the four combined hydraulic rods.

[0070] Example 2

[0071] Based on Embodiment 1, this embodiment provides a wave energy harvesting method for a wave energy harvesting device that realizes multidimensional wave energy conversion, as described in Embodiment 1, including the following steps.

[0072] Step 1: Acquire wave detection data and determine the energy harvesting method based on the detection data;

[0073] Step 2: When the wave comes from one direction and the main energy capture method is lateral and longitudinal rolling, the telescopic rod 2 of the control gear core is stretched downward, so that the upper gear 1 disengages from other helical gears.

[0074] Step 3: When the bow roll is the main energy harvesting method, control the telescopic rod 2 to compress upwards, and the upper gear 1 meshes with other helical gears;

[0075] In step 2, the telescopic rod 2 is extended downwards, and the upper gear 1 disengages from the first side gear 4, the lower gear 6, and the second side gear 10, primarily rotating reciprocatingly around the horizontal axis of the cross shaft. Furthermore, the submersion depth of the entire device can be adjusted according to the size of the incoming waves, changing the device's center of gravity to achieve the maximum energy capture effect.

[0076] In step 3, the telescopic rod 2 is compressed upwards, and the upper gear 1 meshes with other helical gears, mainly reciprocating around the longitudinal axis of the cross shaft.

[0077] In step 1, the method for determining the energy harvesting method is as follows: an information acquisition unit, including a wave probe sensor and a wave measuring rod, is arranged around the wave energy collection device to collect the waveform data and wave period signal of the detected waves and determine the energy harvesting method based on the detected wave information.

[0078] This embodiment achieves flexible control to change the device structure of the gear core, enabling efficient capture of wave energy according to the wave pattern, thereby improving power generation efficiency.

[0079] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

[0080] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. 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 this disclosure are still within the scope of protection of this disclosure.

Claims

1. A wave energy harvesting device for realizing multidimensional wave energy conversion, characterized in that: Includes a support frame, a gear-crank connecting rod mechanism, a main shaft hydraulic rod, and a float; The support includes an inner support and an outer support that are rotatably connected. A gear-crank connecting rod mechanism is fixed on the inner support and includes a gear core and a crank connecting rod mechanism. The upper end of the gear core is fixedly connected to the outer support, and the gear core is connected to the side wall of the inner support through the crank connecting rod mechanism. The upper contact positions of the inner support and the outer support are connected by cylindrical bearings. The gear core includes four helical gears meshing sequentially, each helical gear forming a quadrilateral. The upper gear's gear disk is fixedly connected to the central column of the outer support; the lower gear's gear disk is connected to the main shaft hydraulic rod; a cross shaft frame is set in the middle of the quadrilateral formed by the meshing helical gears, and each helical gear is rotatably connected to the cross shaft frame; a telescopic rod is set on the support connecting the cross shaft frame and the upper gear to realize the meshing and disengagement of the upper gear with the vertically arranged helical gears; the axis of the cross shaft frame is set as a hinge structure, including a hinge ball and a hinge seat. The hinge ball and the hinge seat are adapted to each other, the hinge seat is connected to the lower end of the telescopic rod, and the hinge ball is rotatably connected to the lower gear; the hinge seat is rotatably connected to the left and right vertically arranged left and right helical gears; the crank-connecting rod mechanism includes a connecting rod, a slider with a slide rod and a rack; the connecting rod is connected to the vertically arranged helical gears of the gear core, the helical gear drives the connecting rod to move, the connecting rod drives the slider to move on the slide rod, and the rack on the slider is meshed with the power transmission end of the first gear generator through a rack engagement; The gear-crank connecting rod mechanism, the main shaft hydraulic rod, and the float are connected in sequence. The main shaft hydraulic rod oscillates under the drive of the float, and collects energy by pushing the hydraulic oil through stretching and compression. The energy is then converted into electrical energy by the first gear generator connected to the gear-crank connecting rod mechanism.

2. The wave energy harvesting device for realizing multidimensional wave energy conversion as described in claim 1, characterized in that: The cross shaft bracket and the helical gear are rotatably connected via bearings.

3. The wave energy harvesting device for realizing multidimensional wave energy conversion as described in claim 1, characterized in that: There are two sets of crank-connecting rod mechanisms, which are symmetrically distributed.

4. The wave energy harvesting device for realizing multidimensional wave energy conversion as described in claim 1, characterized in that: The main spindle hydraulic rod includes a hydraulic rod body, hydraulic oil inlets and outlets located at both ends of the hydraulic rod body, and a protective sleeve located at the upper end of the hydraulic rod body; the upper end of the main spindle hydraulic rod is fixed to the lower gear of the gear core, and the lower end is fixed to a float; the hydraulic oil inlet and outlet are connected to a flow motor.

5. A wave energy harvesting device for realizing multidimensional wave energy conversion as described in claim 1, characterized in that: The float includes a housing and a built-in ball-hydraulic rod mechanism disposed within the housing. The built-in ball-hydraulic rod mechanism includes a mounting plate, a hydraulic power generation system, a built-in hydraulic rod, and a solid ball. The mounting plate is fixedly installed inside the float housing. A hydraulic power generation system is installed on the mounting plate, and the built-in hydraulic rods are hinged to the bottom of the mounting plate. A solid ball is suspended from the mounting plate by symmetrical built-in hydraulic rods.

6. The wave energy harvesting device for realizing multidimensional wave energy conversion as described in claim 5, characterized in that: The built-in hydraulic rod includes a first rod body and a second rod body, which are hinged to the bottom of the mounting plate via a conventional hinge.

7. A wave energy harvesting device for realizing multidimensional wave energy conversion as described in claim 5, characterized in that: The hydraulic power generation system is equipped with a hydraulic cylinder and a flow generator for each built-in hydraulic rod. The built-in hydraulic rod, hydraulic cylinder and flow generator are connected in sequence. The built-in hydraulic rod performs a stretching and contracting motion, squeezing the hydraulic oil in the cylinder cavity to flow and drive the flow generator to generate electricity.

8. A wave energy harvesting method based on a wave energy harvesting device for realizing multidimensional wave energy conversion according to any one of claims 1-7, characterized in that, Includes the following steps: Acquire wave detection data and determine the energy harvesting method based on the detection data; When a wave comes from one direction and its main energy-harvesting method is lateral and longitudinal rolling, the telescopic rod of the control gear core is pulled downward, causing the upper gear to disengage from the vertically set helical gear. When the bow roll is the primary energy harvesting method, the control telescopic rod is compressed upwards, and the upper gear meshes with the vertically arranged helical gear.

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