Wave energy power generation device with adjustable hollow-out degree of damping plate

Abstract

The invention discloses a wave power generation device with adjustable hollow-out degree of a damping plate. Comprising an outer connecting rod, a floating body, an inner connecting rod, a hollow fixed plate and a hollow movable plate, wherein the floating body is arranged on the outer connecting rod in a penetrating manner and can float on the sea surface along the outer connecting rod; the inner connecting rod is arranged in the outer connecting rod in a penetrating manner; a cylinder body of the hydraulic cylinder is connected with the upper end of the outer connecting rod, a piston rod of the hydraulic cylinder is connected with the upper surface of the floating body, the hydraulic motor and the hydraulic cylinder share the same oil path, the power generator is connected with the hydraulic motor, and the adjusting mechanism is connected with the power generator and used for driving the inner connecting rod to rotate. The adjusting mechanism is started to drive the inner connecting rod to rotate, the movable plate rotates along with the inner connecting rod, and the overlapping degree between the movable plate and the fixed plate is adjusted. The stability of the power generation device is improved while the wave energy capturing efficiency is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of wave energy power generation, and in particular relates to a wave energy power generation device with an adjustable hollowing degree of a damping plate. Background Art

[0002] According to the different reference objects of the floating body movement, wave energy power generation devices are divided into single-body and double-body types. The floating body of the single-body wave energy power generation device moves relative to fixed objects such as the seabed or land, which is suitable for shallow waters; the floating body of the double-body wave energy power generation device moves relative to the moving object, which is suitable for deep waters.

[0003] The typical structure of a catamaran wave energy power generation device consists of a buoy floating on the water surface and a damping plate located at a certain depth underwater. Since the wave energy decays exponentially with the increase of water depth, the wave energy at the depth where the damping plate is located can usually be ignored, that is, the wave excitation force on the damping plate is much smaller than the buoy, resulting in the asynchronous movement of the buoy and the damping plate. Therefore, the relative motion energy between the buoy and the damping plate can be converted into electrical energy through an energy conversion mechanism. The hydrodynamic force on the damping plate is mainly the damping force provided by the water body during its reciprocating motion. The damping force on the damping plate is proportional to the projected area of ​​the damping plate along its own motion direction. Since the damping plate mainly performs heaving motion, the damping force on the damping plate usually depends on the projected area of ​​the damping plate along its own axis. If the projected area of ​​the damping plate in the axis direction is fixed, the relationship between the damping force on the damping plate and the speed of the damping plate is also determined, and then the most efficient wave period for the wave energy generation device to capture wave energy is determined. When the wave period deviates from the above-mentioned most efficient value, the wave energy capture efficiency will drop significantly.

[0004] Because the wave cycle on the sea surface is constantly changing, in order to always maintain a high wave energy capture efficiency in the constantly changing wave cycle, it is an effective means to design the structure of the damping plate so that its projected area along its own axis direction is adjustable. The invention patent with application number CN201910662435.5 proposes to set a number of additional damping plates on the periphery of the damping plate that can be continuously adjusted between vertical and horizontal postures and evenly distributed along the circumference, and each additional damping plate is driven by a hydraulic cylinder. Although this technology realizes the continuous adjustment of the projected area of ​​the damping plate along its own axis direction, the hydraulic cylinder as an adjustment mechanism is directly exposed to seawater. Not only are its seals and piston rods susceptible to seawater corrosion, but it may also cause hydraulic oil leakage and cause environmental pollution.

[0005] Therefore, it is urgent to solve the above problems. Summary of the invention

[0006] Purpose of the invention: The purpose of the present invention is to provide a wave energy power generation device with adjustable hollowness of the damping plate. The adjustment mechanism for driving and adjusting the hollowness is located above the water surface, which is protected from seawater corrosion and avoids the risk of environmental pollution. While ensuring the wave energy capture efficiency, it also improves the stability of the power generation device.

[0007] Technical solution: To achieve the above purpose, the present invention discloses a wave energy power generation device with adjustable hollowness of a damping plate, comprising an external connecting rod, a floating body inserted on the external connecting rod and capable of floating on the sea surface along the external connecting rod, an internal connecting rod inserted in the external connecting rod, a fixed plate connected to the lower end of the external connecting rod and hollowed out, a movable plate connected to the lower end of the internal connecting rod and hollowed out, a hydraulic cylinder whose cylinder body is connected to the upper end of the external connecting rod and whose piston rod is connected to the upper surface of the floating body, a hydraulic motor having the same oil circuit as the hydraulic cylinder, a generator connected to the hydraulic motor, and an adjusting mechanism connected to the generator and used to drive the internal connecting rod to rotate. Wave energy drives the piston rod of the hydraulic cylinder to move through the floating body, drives the hydraulic motor to rotate, the generator generates electricity, the adjusting mechanism is started, drives the internal connecting rod to rotate, the movable plate follows the rotation, and the overlap between the movable plate and the fixed plate is adjusted.

[0008] Optionally, the fixed plate includes an upper support plate, a lower support plate and a side support plate, the upper support plate is a hollow circular plate, and a plurality of fan-shaped holes of the same size and not connected to each other are evenly distributed in the circumferential direction of the upper support plate, the lower support plate is a flat circular ring, and the side support plate is a vertical circular tube.

[0009] Optionally, the movable plate is coaxial with the fixed plate, and the movable plate is located at a side of the fixed plate close to the upper support plate along the axial direction of the fixed plate.

[0010] Optionally, the movable plate is a hollow circular plate, and three fan-shaped holes of the same size and not connected to each other are evenly distributed along the circumferential direction on the movable plate.

[0011] Optionally, the fixed plate and the movable plate are connected by several sets of rolling support mechanisms to constrain the position of the movable plate relative to the fixed plate. Each set of rolling support mechanisms includes three rolling support components with the same structure but facing upward, downward and radially, and a mounting seat fixedly connected to each rolling support component.

[0012] Optionally, the rolling support assembly includes a sleeve, a limiting end cover fixedly connected to the sleeve, a support shaft with a shoulder passing through the sleeve and the limiting end cover, a compression spring located in the sleeve and sleeved on the support shaft, and a roller located at the end of the support shaft, wherein both ends of the spring are in contact with the end plane of the sleeve and the shoulder plane of the support shaft respectively.

[0013] Optionally, the floating body includes a buoyancy box and a hydraulic cylinder driving rod fixedly connected to the upper surface of the buoyancy box and used for connecting to the hydraulic cylinder piston rod.

[0014] Optionally, the hydraulic cylinder drive rod is in an inverted U shape, whose symmetry plane coincides with the symmetry axis of the buoyancy box, and the lower surface of the top horizontal part of the hydraulic cylinder drive rod is symmetrically provided with lifting ears hinged to the piston rod of the hydraulic cylinder along the axial direction.

[0015] Optionally, the buoyancy tank is a hollow cylinder filled with foam.

[0016] Optionally, the adjustment mechanism includes a drive motor and a reducer, wherein the reducer includes a housing, an input worm located in the housing and connected to the drive motor, and an output turbine located in the housing and meshed with the input worm, wherein the output turbine is connected to an inner connecting rod.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention changes the axial angle between the two parts of the fixed plate and the movable plate, changes the overlapping degree of the fan-shaped holes thereon, and then changes the hollowness of the damping plate, and finally realizes the adjustment of the projected area of ​​the damping plate along its own axial direction; the adjustment mechanism of the present invention that drives the change of the axial angle between the fixed plate and the movable plate is located above the water surface, which is not subject to seawater corrosion and avoids the risk of environmental pollution; the present invention sets a rolling support mechanism, which allows the two parts to deviate from the ideal position by a small amount of linear displacement or angular displacement, which can ensure that the adjustment process of the hollowness of the damping plate is not affected by the adhesion of marine debris, thereby improving the operational reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the present invention;

[0019] Figure 2 It is an overall cross-sectional view of the present invention;

[0020] Figure 3 An exploded view of a composite damping plate of the present invention;

[0021] Figure 4 is an axial cross-sectional view of the composite damping plate of the present invention;

[0022] Figure 5 It is a partial enlarged view of the axial cross-sectional view of the composite damping plate of the present invention;

[0023] Figure 6 It is a partial enlarged view of the transverse cross-sectional view of the composite damping plate of the present invention;

[0024] Figure 7 A cross-sectional view of a rolling support assembly of the present invention;

[0025] Figure 8 This is a test diagram of the rolling support assembly shaft of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the composite damping plate of the present invention at different hollowing degrees;

[0027] Fig.10 A schematic diagram of the process of the rolling support assembly of the present invention passing through marine debris;

[0028] Fig.11 It is a schematic diagram of the connection mode of the hydraulic cylinder of the present invention and other structures;

[0029] Fig.12 This is a structural diagram of the appearance of the adjustment mechanism of the present invention;

[0030] Fig.13 It is the internal structure diagram of the regulating mechanism of the present invention;

[0031] Fig.14 It is a schematic diagram of the connection between the adjustment mechanism of the present invention and other structures.

[0032] In the figure: composite damping plate 1, fixed plate 11, upper support plate 111, lower support plate 112, side support plate 113, movable plate 12, rolling support mechanism 13, rolling support assembly 131, sleeve 1311, limiting end cover 1312, support shaft 1313, compression spring 1314, roller 1315, connecting rod 2, outer connecting rod 21, inner connecting rod 22, float 3, buoyancy box 31, hydraulic cylinder drive rod 32, hydraulic cylinder 4, adjusting mechanism 5, drive motor 51, reducer 52, input worm gear 521, output turbine 522, casing 523. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0034] like Figure 1 and Figure 2 As shown, the present invention discloses a wave energy power generation device with adjustable hollowness of a damping plate, comprising: a composite damping plate 1, a connecting rod 2, a floating body 3, a hydraulic cylinder 4 and an adjusting mechanism 5.

[0035] The composite damping plate 1 comprises a fixed plate 11, a movable plate 12 and a rolling support mechanism 13. Figure 3 The fixed plate 11 and the movable plate 12 are connected by a rolling support mechanism 13 to constrain the position of the movable plate 12 relative to the fixed plate 11, ensure that the movable plate 12 is coaxial with the fixed plate 11, and the movable plate 12 is located at a side of the fixed plate 11 along its axial direction close to the upper support plate 111 with a gap as small as possible, so that the composite damping plate 1 can hinder the flow of water on the upper and lower sides of the composite damping plate 1 to the greatest extent when it is not hollowed out.

[0036] The fixed plate 11 is composed of an upper support plate 111, a lower support plate 112 and a side support plate 113 which are coaxial and fixedly connected. The upper support plate 111 is a hollow circular plate, on which three fan-shaped holes of the same size and not connected to each other are evenly distributed along the circumferential direction. The maximum radial dimension of the fan-shaped hole is smaller than the outer diameter of the upper support plate 111, so that a continuous annular plane is reserved on the outer lower surface of the upper support plate 111 to always contact with the upward rolling support component 131 in the rolling support mechanism 13; the minimum radial dimension of the fan-shaped hole is larger than the outer diameter of the outer connecting rod 21 in the connecting rod 2, so as to be firmly coaxially connected with the outer connecting rod 21. The lower support plate 112 is a flat circular ring, and its inner diameter is the same as the maximum radial dimension of the fan-shaped hole in the upper support plate 111, which not only enables the upper side surface of the outer periphery of the lower support plate 112 to have a continuous circular plane to always contact with the downward rolling support component 131 in the rolling support mechanism 13, but also enables the lower support plate 112 to not hinder the flow of water bodies above and below the composite damping plate 1 when the composite damping plate 1 is in a hollow state. The side support plate 113 is a vertical circular tube, and its inner diameter is the same as the outer diameter of the upper support plate 111 and the lower support plate 112, and its inner side surface is always in contact with the radial rolling support component 131 in the rolling support mechanism 13.

[0037] The movable plate 12 is a hollow circular plate, on which three fan-shaped holes of the same size and not connected to each other are evenly distributed along the circumferential direction. The maximum radial dimension of the fan-shaped holes is smaller than the outer diameter of the movable plate to improve the structural rigidity; the minimum radial dimension of the fan-shaped holes is larger than the outer diameter of the inner connecting rod 22 in the connecting rod 2 to be firmly coaxially connected with the inner connecting rod 22.

[0038] There are three sets of rolling support mechanisms 13, which are evenly distributed on the periphery of the movable plate along the circumferential direction, and each set of rolling support mechanisms 13 is fixedly connected to the area of ​​the movable plate 12 away from the fan-shaped hole, so that the deformation degree of the movable plate 12 can be reduced after the rolling support mechanisms 13 are subjected to force. Figure 4 Each set of rolling support mechanism 13 is composed of three rolling support components 131 with identical structures and adjacent to each other but facing upward, downward and radially, and a mounting seat fixedly connected to each rolling support component 131, as shown in FIG. Figure 5 and Figure 6 Each rolling support assembly 131 is fixedly connected to the movable plate 12 through a mounting seat fixedly connected thereto. The rolling support assembly 131 includes a sleeve 1311, a limit end cover 1312, a support shaft 1313, a compression spring 1314 and a roller 1315, as shown in FIG. Figure 7 and Figure 8As shown. The sleeve 1311, the limiting end cover 1312 and the support shaft 1313 are coaxially installed and are all rotating bodies. The sleeve 1311 is fixedly connected to the limiting end cover 1312. The support shaft 1313 is sleeved on the mounting holes on the sleeve 1311 and the limiting end cover 1312, and can slide along the axis of the sleeve 1311 and the limiting end cover 1312. The compression spring 1314 is sleeved between the support shaft 1313 and the sleeve 1311, and its two ends are respectively in contact with the end plane of the sleeve 1311 and the shoulder plane of the support shaft 1313. In the working state, the compression spring 1314 is always in a compressed state, providing preload and restoring force for the support shaft 1313. The limiting end cover 1312 can constrain the axial displacement of the shoulder of the support shaft 1313 to prevent the support shaft 1313 from escaping from the sleeve 1311. The roller 1315 is sleeved in the mounting hole at the end of the support shaft 1313 , and its axis is perpendicular to the axis of the support shaft 1313 body and is in direct contact with the upper support plate 111 , the lower support plate 112 and the side support plate 113 in the fixed plate 11 .

[0039] Under the constraint of the rolling support mechanism 13, the movable plate 12 can only rotate freely along the axis direction of the composite damping plate 1 relative to the fixed plate 11, and the movement in other directions is restricted. When the axial angle between the movable plate 12 and the fixed plate 11 changes, the overlap of the projection of the fan-shaped holes on the movable plate 12 and the fixed plate 11 along the axis direction of the composite damping plate 1 changes, such as Fig. 9 As shown. When the overlap is the smallest, that is, the positions of the fan-shaped holes on the two parts are completely staggered along the axis of the composite damping plate 1, the hollowing degree of the composite damping plate 1 is zero, and the projected area of ​​the composite damping plate 1 along its own axis is the largest; when the overlap is the largest, that is, the positions of the fan-shaped holes on the two parts are completely aligned along the axis of the composite damping plate 1, the hollowing degree of the composite damping plate 1 is the largest, and the projected area of ​​the composite damping plate 1 along its own axis is the smallest. Therefore, the projected area of ​​the composite damping plate 1 along its own axis can be adjusted by adjusting the axial angle between the movable plate 12 and the fixed plate 11.

[0040] Under ideal conditions where adhesion of marine debris is not considered, the movable plate 12 should be coaxial with the fixed plate 11, and the movable plate 12 should be located on the side of the fixed plate 11 along its axial direction close to the upper support plate 111. However, due to the influence of adhesion of marine debris, if the support mechanism between the movable plate 12 and the fixed plate 11 lacks flexibility, the relative rotation between the two is easily blocked, resulting in the inability to adjust the projection area of ​​the composite damping plate 1 along its own axial direction. The rolling support mechanism 13 proposed in the present invention adopts a flexible support method containing a spring. Even if there is adhered marine debris on the contact surface of the roller 1315 in each rolling support component 131, each rolling support component 131 can overcome the obstruction of marine debris through its own axial expansion and contraction and cooperate with the flexible deformation of the fixed plate 11 and the movable plate 12 in the composite damping plate 1, thereby ensuring smooth relative movement between the fixed plate 11 and the movable plate 12, so that the projection area of ​​the composite damping plate 1 along its own axial direction is continuously adjustable, such as Fig.10 shown.

[0041] The connecting rod 2 is composed of an outer connecting rod 21 and an inner connecting rod 22 which are coaxial and non-contacting with each other. The bottom of the outer connecting rod 21 is coaxially fixedly connected to the fixed plate 11 in the composite damping plate 1, and the top thereof is fixedly connected to the housing 523 of the adjustment mechanism 5 located above the water surface and is hinged to the cylinder bodies of the two hydraulic cylinders 4 through the lifting lugs. The bottom of the inner connecting rod 22 is coaxially fixedly connected to the movable plate 12 in the composite damping plate 1, and the top thereof is sleeved in the spline hole of the output turbine 522 in the adjustment mechanism 5. Therefore, the top of the inner connecting rod 22 can slide slightly along the axial direction of the output turbine 522. Considering the long and straight characteristics of the inner connecting rod 22, the movable plate 12 is allowed to deviate from the ideal position by a small amount of linear displacement or angular displacement relative to the fixed plate 11, so as to adapt to the marine debris that may adhere to the contact surface of the roller 1315 in each rolling support assembly 131. When the output turbine 522 of the adjusting mechanism 5 rotates, the inner connecting rod 22 rotates along its axis relative to the outer connecting rod 21, so that the movable plate 12 reaches a preset axial angle relative to the fixed plate 11, thereby adjusting the projected area of ​​the composite damping plate 1 along its own axis.

[0042] The floating body 3 is composed of a buoyancy box 31 and a hydraulic cylinder driving rod 32. The buoyancy box 31 is a hollow ring filled with foam and floats on the water surface. Its center hole is mounted on the outer connecting rod 21 in the connecting rod 2 and can slide along the axis direction of the outer connecting rod 21. The hydraulic cylinder driving rod 32 is fixedly connected to the upper surface of the buoyancy box 31 and is in an inverted U shape. Its symmetry plane coincides with the symmetry axis of the buoyancy box 31. Two lifting ears are symmetrically arranged on the lower surface of the top horizontal part of the hydraulic cylinder driving rod 32 along the axis direction to respectively articulate the piston rods of the two hydraulic cylinders 4. Under the excitation of the surface waves, the buoyancy box 31 reciprocates relative to the outer connecting rod 21 along its axis direction, thereby capturing the incident wave energy and converting it into the kinetic energy of the floating body 3.

[0043] There are two sets of hydraulic cylinders 4, and their axes are parallel to each other. The piston rod of the hydraulic cylinder 4 is hinged to the lifting ear of the hydraulic cylinder driving rod 32 in the floating body 3 through the end lifting ear; the cylinder body of the hydraulic cylinder 4 is also hinged to the lifting ear at the top of the outer connecting rod 21 in the connecting rod 2 through the end lifting ear. Fig.11 When the buoyancy box 31 reciprocates along the axis direction relative to the outer connecting rod 21, the pistons in the two hydraulic cylinders 4 move relative to the cylinder bodies, driving the high-pressure liquid in the hydraulic cylinders 4 to flow and driving the hydraulic motor in the same oil circuit as the hydraulic cylinders 4 to rotate, and finally driving the generator to rotate, thereby converting the kinetic energy of the buoy 3 into electrical energy.

[0044] The adjustment mechanism 5 is composed of a drive motor 51 and a reducer 52. Fig.12 , Fig.13 and Fig.14 As shown. The housing of the driving motor 51 is fixedly connected to the housing 523 of the reducer 52, and its output shaft is used to drive the reducer 52 to rotate. The driving motor 51 is the power input device of the regulating mechanism 5, and its driving power comes from the electric energy produced by the wave energy power generation device. The reducer 52 is composed of an input worm 521, an output turbine 522 and a housing 523. The input worm 521 and the output turbine 522 are both mounted on the housing 523 through rolling bearings; the axial directions of the two are perpendicular to each other and mesh with each other. The inner hole of the shaft end of the input worm 521 is mounted on the output shaft of the driving motor 51 and is fixedly connected in the circumferential direction through a flat key to transmit power. A spline hole is set on the output turbine 522, which is mounted on the spline shaft at the top of the inner connecting rod 22 in the connecting rod 2 and is fixedly connected in the circumferential direction to transmit power. When the driving motor 51 rotates, the input worm 521 and the output worm 522 rotate accordingly, driving the inner connecting rod 22 in the connecting rod 2 and the movable plate 12 in the composite damping plate 1 to rotate accordingly, changing the hollowing degree of the composite damping plate 1, and finally adjusting the projection area of ​​the composite damping plate 1 along its own axis. Since the worm gear mechanism has a self-locking characteristic, once the hollowing degree of the composite damping plate 1 is determined, the composite damping plate 1 will not change its hollowing degree even if it is disturbed by the outside world.

Claims

1. A wave energy power generation device with adjustable hollowness of damping plate, characterized in that: The invention comprises an outer connecting rod (21), a floating body (3) which is inserted on the outer connecting rod and can float on the sea surface along the outer connecting rod, an inner connecting rod (22) which is inserted in the outer connecting rod, a fixed plate (11) which is connected to the lower end of the outer connecting rod and is hollowed out, a movable plate (12) which is located at the lower end of the inner connecting rod and is connected to the hollowed out, a hydraulic cylinder (4) whose cylinder body is connected to the upper end of the outer connecting rod and whose piston rod is connected to the upper surface of the floating body, a hydraulic motor which has an oil circuit in the same oil circuit as the hydraulic cylinder, a generator connected to the hydraulic motor, and an adjusting mechanism (5) which is connected to the generator and is used to drive the inner connecting rod to rotate. Wave energy drives the piston rod of the hydraulic cylinder to move through the floating body, drives the hydraulic motor to rotate, generates electricity from the generator, starts the adjusting mechanism, drives the inner connecting rod to rotate, and the movable plate rotates accordingly, thereby adjusting the overlap between the movable plate and the fixed plate.

2. A wave energy power generation device with adjustable hollowness of damping plate according to claim 1, characterized in that: The fixing plate (11) comprises an upper support plate (111), a lower support plate (112) and a side support plate (113); the upper support plate (111) is a hollow circular plate, and a plurality of fan-shaped holes of the same size and not connected to each other are evenly distributed along the circumferential direction on the upper support plate (111); the lower support plate (112) is a flat circular ring; and the side support plate (113) is a vertical circular tube.

3. A wave energy power generation device with adjustable hollowness of damping plate according to claim 2, characterized in that: The movable plate (12) is coaxial with the fixed plate (11), and the movable plate (12) is located at a side of the fixed plate (11) close to the upper support plate (111) along the axial direction of the fixed plate (11).

4. The wave energy power generation device with adjustable hollowness of the damping plate according to claim 1, characterized in that: The movable plate (12) is a hollow circular plate, and three fan-shaped holes of the same size and not connected to each other are evenly distributed along the circumferential direction on the movable plate (12).

5. The wave energy power generation device with adjustable hollowness of the damping plate according to claim 1, characterized in that: The fixed plate (11) and the movable plate (12) are connected via a plurality of rolling support mechanisms (13) to constrain the position of the movable plate (12) relative to the fixed plate (11). Each rolling support mechanism (13) comprises three rolling support assemblies (131) with the same structure but oriented upward, downward and radially, respectively, and a mounting seat fixedly connected to each rolling support assembly (131).

6. A wave energy power generation device with adjustable hollowness of damping plate according to claim 5, characterized in that: The rolling support assembly (131) comprises a sleeve (1311), a limiting end cover (1312) fixedly connected to the sleeve (1311), a support shaft (1313) passing through the sleeve (1311) and the limiting end cover (1312) and having a shoulder, a compression spring (1314) located in the sleeve and sleeved on the support shaft (1313), and a roller (1315) located at the end of the support shaft (1313), wherein two ends of the spring (1314) are respectively in contact with the end plane of the sleeve (1311) and the shoulder plane of the support shaft (1313).

7. The wave energy power generation device with adjustable hollowness of the damping plate according to claim 1, characterized in that: The floating body (3) comprises a buoyancy box (31) and a hydraulic cylinder driving rod (32) fixedly connected to the upper surface of the buoyancy box (31) and used for connecting the hydraulic cylinder piston rod.

8. A wave energy power generation device with adjustable hollowness of damping plate according to claim 7, characterized in that: The hydraulic cylinder driving rod (32) is in an inverted U shape, and its symmetry plane coincides with the symmetry axis of the buoy (31). The lower surface of the top horizontal part of the hydraulic cylinder driving rod (32) is symmetrically provided with a lifting lug hinged to the piston rod of the hydraulic cylinder (4) along the axial direction.

9. The wave energy power generation device with adjustable hollowness of the damping plate according to claim 7, characterized in that: The buoyancy box (31) is a hollow cylinder filled with foam.

10. The wave energy power generation device with adjustable hollowness of the damping plate according to claim 1, characterized in that: The regulating mechanism (5) comprises a driving motor (51) and a reducer (52), wherein the reducer (52) comprises a housing (523), an input worm (521) located in the housing (523) and connected to the driving motor (51), and an output turbine (522) located in the housing and meshing with the input worm (521), wherein the output turbine (522) is connected to an inner connecting rod (22).

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