Floating type wave energy collecting device

Abstract

The invention discloses a floating type wave energy collecting device. The device comprises a fixed base, a telescopic supporting rod, an outer sleeve, a buoy, an inner threaded barrel, an inner sleeve barrel, a piezoelectric plate, a cantilever beam, a cantilever beam fixing base, an inner sleeve barrel top end cover, a spiral rod, a first deep groove ball bearing, an inner cylindrical gear ring, a planetary gear carrier, a first shaft end check ring, a second shaft end check ring, a second deep groove ball bearing and a first planetary cylindrical gear shaft. The disc type electromagnetic generator comprises a first shaft end check ring, a second shaft end check ring, a third deep groove ball bearing, a second planetary cylindrical gear shaft, a fourth shaft end check ring, a fourth deep groove ball bearing, a third planetary cylindrical gear shaft, a first planetary cylindrical gear, a second planetary cylindrical gear, a third planetary cylindrical gear, a central cylindrical gear, a central cylindrical gear shaft, a fifth shaft end check ring and a disc type electromagnetic generator rotor. A flat disc type magnet, a fifth deep groove ball bearing, a disc type electromagnetic generator stator, a sixth shaft end check ring and an annular cylindrical coil are included. The sea wave energy conversion part in the device has two electric energy output modes of pressure power generation and electromagnetic power generation, the pressure power generation mode is used for detecting the motion state of sea waves, the electromagnetic power generation mode is used for supplying energy to the energy collection device, the two power generation modes are combined, and the functions of power supply and sensing detection can be achieved at the same time.

Description

Technical Field

[0001] The present invention relates to an ocean wave energy collection device, which is an energy collection device that uses floating collection and combines piezoelectric and electromagnetic power conversion. Background Art

[0002] With the increasing status of renewable clean energy in the global energy structure, many clean forms of energy have been continuously developed. After continuous development, many forms of clean energy power generation technologies have become increasingly mature. As a clean energy source with rich reserves and wide distribution, the research on the collection of ocean wave energy has received the key attention of scientific research institutions and energy enterprises in various countries. However, currently existing wave energy collection devices generally have problems such as low energy capture efficiency, complex structure, high maintenance cost, etc., resulting in slow development of their practical applications.

[0003] In fact, most of the energy conversion technologies of current wave energy collection devices adopt a single energy conversion mechanism, and the energy conversion structure is relatively complex, and the power supply application form is single. This ignores the possibility of multi-physical field coupling and synergistic enhancement, which will affect the power output density of the energy collection device to a certain extent and also reduce the application forms of the energy collection device.

[0004] Based on the above existing problems, the present invention proposes a floating wave energy collection device. The energy collection device captures wave motion by the action of sea waves on the buoy in the device, and generates up and down motion through the buoyancy change of the buoy. This energy collection device adopts a power conversion form that combines piezoelectric and electromagnetic, which not only increases the energy conversion method but also expands the application range of the energy collection device: it can simultaneously realize the functions of power supply and sensing detection. The electric energy generated by the pressure power generation method can be used to detect the motion state of ocean waves, and the electric energy generated by the electromagnetic power generation method can supply energy to high-power-consuming electronic devices. Summary of the Invention

[0005] The object of the present invention is to provide an ocean wave energy recovery device, which improves the energy density of the energy collection device and expands the power supply application range by adopting an energy conversion method that combines piezoelectric and electromagnetic.

[0006] The energy harvesting device of the present invention adopts the following technical solution: The fixed part of the device consists of a fixed base and a telescopic support rod; the wave capture part consists of an outer sleeve, a buoy, and an internally threaded barrel; the wave energy conversion part consists of an inner sleeve barrel, piezoelectric sheets, cantilever beams, cantilever beam fixed bases, the top cover of the inner sleeve barrel, a screw rod, a first deep groove ball bearing, an internal cylindrical gear ring, a planetary gear carrier, a first shaft end retaining ring, a second shaft end retaining ring, a second deep groove ball bearing, a first planetary cylindrical gear shaft, a third shaft end retaining ring, a third deep groove ball bearing, a second planetary cylindrical gear shaft, a fourth shaft end retaining ring, a fourth deep groove ball bearing, a third planetary cylindrical gear shaft, a first planetary cylindrical gear, a second planetary cylindrical gear, a third planetary cylindrical gear, a central cylindrical gear, a central cylindrical gear shaft, a fifth shaft end retaining ring, a disc type electromagnetic generator rotor, a flat circular magnet, a fifth deep groove ball bearing, a disc type electromagnetic generator stator, a sixth shaft end retaining ring, and an annular cylindrical coil; The fixed base is fixedly installed in the beach shallow water area soil through the telescopic support rod; The buoy is fixedly glued to the outer sleeve; The top of the internally threaded barrel is fixed to the inner top of the outer sleeve using an Allen screw; The inner sleeve barrel is installed on the fixed base, and the outer sleeve is sleeved on the inner sleeve barrel; The piezoelectric sheets are adhered to the cantilever beams using glue; the vibrating end of the cantilever beam is fixed to the fixed seat on the internally threaded barrel using an Allen screw, the fixed end of the cantilever beam is fixed to the cantilever beam fixed base using an Allen screw, and the cantilever beam fixed base and the top cover of the inner sleeve barrel are fixedly connected using an Allen screw; The top cover of the inner sleeve barrel and the top of the inner sleeve barrel are fixed using a sealant waterproof glue; The screw rod meshes with the internally threaded barrel; the outer ring of the first deep groove ball bearing is installed on the bearing seat of the internal cylindrical gear ring, and the screw rod is installed on the inner ring of the first deep groove ball bearing; a keyway is opened on the end shaft of the screw rod, and a flat key is used for circumferential connection and fixation with the planetary gear carrier; the first shaft end retaining ring is used for axial fixation of the screw rod and the planetary gear carrier; The internal cylindrical gear ring is fixedly installed on the inner wall boss of the inner sleeve barrel using an Allen screw; The outer ring of the second deep groove ball bearing is fixedly installed on the bearing seat of the planetary gear carrier; the first planetary cylindrical gear shaft is installed in the inner ring of the second deep groove ball bearing and can rotate together with the inner ring of the second deep groove ball bearing; the second shaft end retaining ring fits on the inner ring of the second deep groove ball bearing to axially fix the first planetary cylindrical gear shaft; The outer ring of the third deep groove ball bearing is fixedly installed on the bearing seat of the planetary gear carrier; the second planetary cylindrical gear shaft is installed on the inner ring of the third deep groove ball bearing and can rotate together with the inner ring of the third deep groove ball bearing; the third shaft end retaining ring fits on the inner ring of the third deep groove ball bearing to axially fix the second planetary cylindrical gear shaft; The outer ring of the fourth deep groove ball bearing is fixedly installed on the bearing seat of the planetary gear carrier; the third planetary cylindrical gear shaft is installed on the inner ring of the fourth deep groove ball bearing and can rotate together with the inner ring of the fourth deep groove ball bearing; the fourth shaft end retaining ring fits on the inner ring of the fourth deep groove ball bearing to axially fix the third planetary cylindrical gear shaft; A cylindrical boss is machined on the back side of the first planetary cylindrical gear, and a threaded hole is machined on the boss. It is fixedly connected to the first planetary cylindrical gear shaft using a set screw; a cylindrical boss is machined on the back side of the second planetary cylindrical gear, and a threaded hole is machined on the boss. It is fixedly connected to the second planetary cylindrical gear shaft using a set screw; a cylindrical boss is machined on the back side of the third planetary cylindrical gear, and a threaded hole is machined on the boss. It is fixedly connected to the third planetary cylindrical gear shaft using a set screw; The first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear are simultaneously meshed with the inner cylindrical gear internally; the central cylindrical gear is simultaneously meshed with the first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear externally; The central cylindrical gear is circumferentially fixedly connected to the central cylindrical gear shaft through a flat key; the central cylindrical gear and the central cylindrical gear shaft are axially fixed using a fifth shaft end retaining ring; A cylindrical boss is machined on the top of the rotor of the disk-type electromagnetic generator, and a threaded hole is machined on the boss. It is fixedly connected to the central cylindrical gear shaft using a set screw; the flat and circular sheet magnet is fixedly installed in the corresponding circular groove of the rotor of the disk-type electromagnetic generator through bonding; The outer ring of the fifth deep groove ball bearing is fixedly installed in the bearing seat hole at the center of the stator of the disk-type electromagnetic generator; the central cylindrical gear shaft is installed on the inner ring of the fifth deep groove ball bearing and can rotate together with the inner ring of the fifth deep groove ball bearing; the sixth shaft end retaining ring fits on the inner ring of the fifth deep groove ball bearing to axially fix the central cylindrical gear shaft; The annular cylindrical coil is fixedly installed on the fixed seat of the disk-shaped electromagnetic generator stator; The disk-shaped electromagnetic generator stator is fixedly installed at the bottom of the inner sleeve barrel using hexagon socket head cap screws.

[0007] Optionally, when the buoy in the wave capture part is affected by the change of the buoyancy of the sea wave, it will drive the outer sleeve to float up and down, and at the same time drive the internal thread barrel to move up and down reciprocally; the internal thread barrel can input the captured wave energy into the piezoelectric power generation structure and the electromagnetic power generation structure in the wave energy conversion part respectively. The above two power generation structures can move independently without interference, and at the same time realize the collection of electric energy in two different voltage forms.

[0008] Optionally, in the piezoelectric power generation structure of the wave energy conversion part: the cantilever beam is fixed at one end and movable at the other end; when the internal thread barrel moves up and down reciprocally, the internal thread barrel drives the movable end of the cantilever beam to vibrate up and down through the fixed seat on it, so that the piezoelectric sheet adhered to the cantilever beam is finally affected by pressure to generate electric energy.

[0009] Optionally, in the electromagnetic power generation structure of the wave energy conversion part: the screw rod meshes with the internal thread barrel, converting the up and down reciprocating linear motion of the internal thread barrel into the rotational motion of the screw rod; the screw rod transmits the motion to the planetary gear carrier; the first planetary cylindrical gear, the second planetary cylindrical gear and the third planetary cylindrical gear are respectively installed on the first planetary cylindrical gear shaft, the second planetary cylindrical gear shaft and the third planetary cylindrical gear shaft; the first planetary cylindrical gear, the second planetary cylindrical gear and the third planetary cylindrical gear are respectively in internal meshing with the fixed internal cylindrical gear ring and in external meshing with the central cylindrical gear; through the rotational motion of the planetary gear carrier, the first planetary cylindrical gear, the second planetary cylindrical gear and the third planetary cylindrical gear rotate and revolve simultaneously, so that the central cylindrical gear generates a rotational motion; the central cylindrical gear transmits the motion to the central cylindrical gear shaft, and drives the rotor of the disk type electromagnetic generator to rotate through the central cylindrical gear shaft, thereby generating electric energy.

[0010] Optionally, the internal cylindrical gear ring is fixed and the central cylindrical gear rotates; together with the planetary gear carrier, the internal cylindrical gear ring, the first planetary cylindrical gear shaft, the first planetary cylindrical gear, the second planetary cylindrical gear shaft, the second planetary cylindrical gear, the third planetary cylindrical gear shaft and the third planetary cylindrical gear, it forms a single-degree-of-freedom planetary cylindrical gear train; the planetary gear carrier serves as the power input end of the gear train, and the central cylindrical gear serves as the power output end of the gear train.

[0011] Optionally, the wave energy conversion part in the device has two ways of electrical energy output: pressure power generation and electromagnetic power generation. The electrical energy generated by the pressure power generation method has the characteristics of high voltage and low current, and the output voltage can be used as a sensing detection signal to detect the motion state of ocean waves. The electrical energy generated by the electromagnetic power generation method has the characteristics of high current and high power and can be used for the power supply application of the energy collection device. The combination of piezoelectric and electromagnetic power generation methods in the wave energy conversion part can simultaneously achieve the functions of power supply and sensing detection.

[0012] The floating wave energy collection device has the following beneficial effects: The device efficiently recovers the energy of the up-and-down fluctuations of ocean waves, improves the energy output density by adopting the energy conversion method combining piezoelectric and electromagnetic, and expands the application range of the energy collection device. Brief Description of the Drawings

[0013] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure, and the drawings are included in this specification and form a part of this specification.

[0014] Figure 1 It is the external structure diagram of the floating wave energy collection device of the present invention; Figure 2 It is the sectional structure diagram of the wave capture part and the inner barrel of the present invention; Figure 3 It is the piezoelectric power generation structure diagram of the wave energy conversion part of the present invention; Figure 4 It is the exploded view of the electromagnetic power generation structure of the wave energy conversion part of the present invention; Figure 5 It is the exploded view of the planetary gear train structure of the wave energy conversion part of the present invention; The markings in the figure are indicated as follows: 1 - fixed base, 2 - telescopic support rod, 3 - outer sleeve, 4 - buoy, 5 - inner threaded barrel, 6 - inner sleeve barrel, 7 - piezoelectric sheet, 8 - cantilever beam, 9 - cantilever beam fixed base, 10 - top cover of the inner sleeve barrel, 11 - screw rod, 12 - first deep groove ball bearing, 13 - inner cylindrical gear ring, 14 - planetary gear carrier, 15 - first shaft end retaining ring, 16 - second shaft end retaining ring, 17 - second deep groove ball bearing, 18 - first planetary cylindrical gear shaft, 19 - third shaft end retaining ring, 20 - third deep groove ball bearing, 21 - second planetary cylindrical gear shaft, 22 - fourth shaft end retaining ring, 23 - fourth deep groove ball bearing, 24 - third planetary cylindrical gear shaft, 25 - first planetary cylindrical gear, 26 - second planetary cylindrical gear, 27 - third planetary cylindrical gear, 28 - central cylindrical gear, 29 - central cylindrical gear shaft, 30 - fifth shaft end retaining ring, 31 - disc type electromagnetic generator rotor, 32 - flat circular magnet, 33 - fifth deep groove ball bearing, 34 - disc type electromagnetic generator stator, 35 - sixth shaft end retaining ring, 36 - annular cylindrical coil. Detailed implementation manners

[0015] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and implementation manners. It can be understood that the specific implementation manners described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the convenience of description, only the parts related to the present disclosure are shown in the drawings.

[0016] It should be noted that, without conflict, the implementation manners and features in the implementation manners in the present disclosure can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and implementation manners.

[0017] Unless otherwise specified, the exemplary implementation manners / embodiments shown will be understood to provide exemplary features of various details of some ways that can implement the technical concept of the present disclosure in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various implementation manners / embodiments can be additionally combined, separated, interchanged, and / or rearranged.

[0018] In the drawings, the use of hatching and / or shading is generally used to make the boundaries between adjacent components clear. Thus, unless otherwise stated, the presence or absence of hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences may be performed in an order different from that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals denote the same components.

[0019] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to" or "directly coupled to" another component, there are no intermediate components. For this reason, the term "connected" can refer to physical connection, electrical connection, etc., and with or without intermediate components.

[0020] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "upper", "on", "over", "higher", and "side (e.g., as in "sidewall")" to describe the relationship of one component to another (wherein) component as shown in the drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawing is flipped, a component described as being "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. In addition, the device may be positioned otherwise (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0021] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. In addition, when the terms "comprise" and / or "include" and their variants are used in this specification, it is stated that the stated features, integers, steps, operations, components, assemblies, and / or groups thereof exist, but do not preclude the existence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about", and other similar terms are used as approximate terms and not as terms of degree, so they are used to explain the inherent deviations of measured values, calculated values, and / or provided values that would be recognized by a person of ordinary skill in the art.

[0022] This embodiment provides a floating wave energy recovery device, especially an energy harvesting device that simultaneously uses piezoelectric and electromagnetic power generation methods to collect the energy of the up-and-down fluctuations of ocean waves; it includes: A wave energy recovery device that can recover the energy of the up-and-down floating motion of ocean waves; it includes: 1 - fixed base, 2 - telescopic support rod, 3 - outer sleeve, 4 - buoy, 5 - internally threaded barrel, 6 - inner sleeve barrel, 7 - piezoelectric sheet, 8 - cantilever beam, 9 - cantilever beam fixed base, 10 - top cover of the inner sleeve barrel, 11 - screw rod, 12 - first deep groove ball bearing, 13 - internal cylindrical gear ring, 14 - planetary gear carrier, 15 - first shaft end retaining ring, 16 - second shaft end retaining ring, 17 - second deep groove ball bearing, 18 - first planetary cylindrical gear shaft, 19 - third shaft end retaining ring, 20 - third deep groove ball bearing, 21 - second planetary cylindrical gear shaft, 22 - fourth shaft end retaining ring, 23 - fourth deep groove ball bearing, 24 - third planetary cylindrical gear shaft, 25 - first planetary cylindrical gear, 26 - second planetary cylindrical gear, 27 - third planetary cylindrical gear, 28 - central cylindrical gear, 29 - central cylindrical gear shaft, 30 - fifth shaft end retaining ring, 31 - disc type electromagnetic generator rotor, 32 - flat circular magnet, 33 - fifth deep groove ball bearing, 34 - disc type electromagnetic generator stator, 35 - sixth shaft end retaining ring, 36 - annular cylindrical coil; The fixed base 1 is fixedly installed in the beach shallow water area soil through the telescopic support rod 2; The outer sleeve 3 and the buoy 4 are adhesively connected; The top of the internally threaded barrel 5 is fixed to the inner top of the outer sleeve 3 using hexagon socket head cap screws; The inner sleeve barrel 6 is installed on the fixed base 1, and the outer sleeve 3 is sleeved on the inner sleeve barrel 6; The piezoelectric sheet 7 is adhesively bonded to the cantilever beam 8 with glue; the vibrating end of the cantilever beam 8 is fixed to the fixing seat on the internal-thread barrel with an Allen screw, the fixed end of the cantilever beam 8 is fixed to the cantilever beam fixing base 9 with an Allen screw, and the cantilever beam fixing base 9 is fixedly connected to the top cover 10 of the inner sleeve barrel with an Allen screw; The top cover 10 of the inner sleeve barrel is fixed to the top of the inner sleeve barrel 6 with a sealing waterproof glue; The screw rod 11 meshes with the internal-thread barrel 5; the outer ring of the first deep groove ball bearing 12 is installed on the bearing seat of the internal cylindrical gear ring 13, and the screw rod 11 is installed on the inner ring of the first deep groove ball bearing 12; a keyway is opened at the end shaft of the screw rod 11, and it is circumferentially connected and fixed to the planetary gear carrier 14 with a flat key; the first shaft end retaining ring 15 is used for the axial fixation of the screw rod 11 and the planetary gear carrier 14; The internal cylindrical gear ring 13 is fixedly installed on the inner wall boss of the inner sleeve barrel 6 with an Allen screw; The outer ring of the second deep groove ball bearing 17 is fixedly installed on the bearing seat of the planetary gear carrier 14; the first planetary cylindrical gear shaft 18 is installed in the inner ring of the second deep groove ball bearing 17 and can rotate together with the inner ring of the second deep groove ball bearing 17; the second shaft end retaining ring 16 is attached to the inner ring of the second deep groove ball bearing 17 to axially fix the first planetary cylindrical gear shaft 18; The outer ring of the third deep groove ball bearing 20 is fixedly installed on the bearing seat of the planetary gear carrier 14; the second planetary cylindrical gear shaft 21 is installed in the inner ring of the third deep groove ball bearing 20 and can rotate together with the inner ring of the third deep groove ball bearing 20; the third shaft end retaining ring 19 is attached to the inner ring of the third deep groove ball bearing 20 to axially fix the second planetary cylindrical gear shaft 21; The outer ring of the fourth deep groove ball bearing 23 is fixedly installed on the bearing seat of the planetary gear 14 carrier; the third planetary cylindrical gear shaft 24 is installed in the inner ring of the fourth deep groove ball bearing 23 and can rotate together with the inner ring of the fourth deep groove ball bearing 23; the fourth shaft end retaining ring 22 is attached to the inner ring of the fourth deep groove ball bearing 23 to axially fix the third planetary cylindrical gear shaft 24; A cylindrical boss is machined on the back side of the first planetary cylindrical gear 25, and a threaded hole is machined on the boss, and it is fixedly connected to the first planetary cylindrical gear shaft 18 with a set screw; a cylindrical boss is machined on the back side of the second planetary cylindrical gear 26, and a threaded hole is machined on the boss, and it is fixedly connected to the second planetary cylindrical gear shaft 21 with a set screw; a cylindrical boss is machined on the back side of the third planetary cylindrical gear 27, and a threaded hole is machined on the boss, and it is fixedly connected to the third planetary cylindrical gear shaft 24 with a set screw; The first planetary cylindrical gear 25, the second planetary cylindrical gear 26, and the third planetary cylindrical gear 27 are simultaneously meshed with the internal cylindrical gear ring 13 internally; the central cylindrical gear 28 is simultaneously meshed with the first planetary cylindrical gear 25, the second planetary cylindrical gear 26, and the third planetary cylindrical gear 27 externally; The central cylindrical gear 28 is circumferentially fixedly connected to the central cylindrical gear shaft 29 by a flat key; the central cylindrical gear 28 and the central cylindrical gear shaft 29 are axially fixed by a fifth shaft end retaining ring 30; A cylindrical boss is machined on the top of the disk-type electromagnetic generator rotor 31, and a threaded hole is machined on the boss, and it is fixedly connected to the central cylindrical gear shaft 29 by a set screw; the flat disk-shaped magnet 32 is fixedly installed in the corresponding circular groove of the disk-type electromagnetic generator rotor 31 by gluing; The outer ring of the fifth deep groove ball bearing 33 is fixedly installed in the bearing seat hole at the center of the disk-type electromagnetic generator stator 34; the central cylindrical gear shaft 29 is installed in the inner ring of the fifth deep groove ball bearing 33 and can rotate together with the inner ring of the fifth deep groove ball bearing 33; the sixth shaft end retaining ring 35 is attached to the inner ring of the fifth deep groove ball bearing 33 to axially fix the central cylindrical gear shaft 29; The annular cylindrical coil 36 is fixedly installed on the fixed seat of the disk-shaped electromagnetic generator stator 34; The disk-shaped electromagnetic generator stator 34 is fixedly installed at the bottom of the inner sleeve barrel 6 by an inner hexagon screw.

[0023] Preferably, when the buoy 4 in the wave capture part is affected by the change of the wave buoyancy, it will drive the outer sleeve barrel 3 to float up and down, and at the same time drive the internal threaded barrel 5 to reciprocate up and down; the internal threaded barrel 5 can input the captured wave energy into the piezoelectric power generation structure and the electromagnetic power generation structure in the wave energy conversion part respectively. The above two power generation structures can move independently without interference, and at the same time realize the collection of electrical energy in two different voltage forms.

[0024] Preferably, in the piezoelectric power generation structure of the wave energy conversion part: the cantilever beam 8 is fixed at one end and movable at the other end; when the internal threaded barrel 5 reciprocates up and down, the internal threaded barrel 5 drives the movable end of the cantilever beam 8 to vibrate up and down through the fixed seat on it, so that the piezoelectric sheet 7 adhered to the cantilever beam 8 is finally subjected to pressure to generate electrical energy.

[0025] Preferably, in the electromagnetic power generation structure of the wave energy conversion part: the screw rod 11 meshes with the internal thread barrel 5, converting the reciprocating linear motion of the internal thread barrel 5 into the rotational motion of the screw rod 11; the screw rod 11 transmits the motion to the planetary gear carrier 14; the first planetary cylindrical gear 25, the second planetary cylindrical gear 26, and the third planetary cylindrical gear 27 are respectively installed on the first planetary cylindrical gear shaft 18, the second planetary cylindrical gear shaft 21, and the third planetary cylindrical gear shaft 24; the first planetary cylindrical gear 25, the second planetary cylindrical gear 26, and the third planetary cylindrical gear 27 are respectively in internal meshing with the fixed internal cylindrical gear ring 13 and in external meshing with the central cylindrical gear 28; through the rotational motion of the planetary gear carrier 14, the first planetary cylindrical gear 25, the second planetary cylindrical gear 26, and the third planetary cylindrical gear 27 rotate and revolve simultaneously, causing the central cylindrical gear 28 to generate a rotational motion; the central cylindrical gear 28 transmits the motion to the central cylindrical gear shaft 29, driving the disk-type electromagnetic generator rotor 31 to rotate through the central cylindrical gear shaft 29, thereby generating electric energy.

[0026] Preferably, the internal cylindrical gear ring 13 is fixed and the central cylindrical gear 28 rotates; together with the planetary gear carrier 14, the internal cylindrical gear ring 13, the first planetary cylindrical gear shaft 18, the first planetary cylindrical gear 25, the second planetary cylindrical gear shaft 21, the second planetary cylindrical gear 26, the third planetary cylindrical gear shaft 24, and the third planetary cylindrical gear 27, a single-degree-of-freedom planetary cylindrical gear train is formed; the planetary gear carrier 14 serves as the power input end of the gear train, and the central cylindrical gear 28 serves as the power output end of the gear train.

[0027] As a preferred solution, the piezoelectric sheet and the electromagnetic generator are also respectively connected with a rectification module and an energy storage module to store the electric energy generated by the piezoelectric sheet and the electromagnetic generator respectively. In this example, the rectification module includes a rectifier bridge circuit, and the energy storage module includes a voltage stabilization circuit and a super capacitor. The rectifier bridge circuit and the voltage stabilization circuit can be implemented by common circuit structures in the art and will not be elaborated here one by one.

[0028] This floating wave energy collection device has the following beneficial effects: The wave energy conversion part in the device has two electric energy output methods, pressure power generation and electromagnetic power generation. The electric energy generated by the pressure power generation method has the characteristics of high voltage and low current, and its output voltage can be used as a sensing detection signal to detect the motion state of ocean waves; the electric energy generated by the electromagnetic power generation method has the characteristics of high current and high power and can be used for the power supply application of the energy collection device; the combination of the piezoelectric and electromagnetic power generation methods in the wave energy conversion part can simultaneously realize the functions of power supply and sensing detection. In the description of this specification, the descriptions with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A wave energy harvesting device, characterized in that, including: a wave energy conversion part, a wave capture part, and a device fixing part; Device fixing part: a fixed base and a telescopic support rod; Wave capture part: an outer sleeve, a buoy, and an internally threaded barrel; Wave energy conversion part: an inner sleeve barrel, piezoelectric sheets, a cantilever beam, a cantilever beam fixing base, a top cover of the inner sleeve barrel, a screw rod, a first deep groove ball bearing, an internal cylindrical gear ring, a planetary gear carrier, a first shaft end retaining ring, a second shaft end retaining ring, a second deep groove ball bearing, a first planetary cylindrical gear shaft, a third shaft end retaining ring, a third deep groove ball bearing, a second planetary cylindrical gear shaft, a fourth shaft end retaining ring, a fourth deep groove ball bearing, a third planetary cylindrical gear shaft, a first planetary cylindrical gear, a second planetary cylindrical gear, a third planetary cylindrical gear, a central cylindrical gear, a central cylindrical gear shaft, a fifth shaft end retaining ring, a disc type electromagnetic generator rotor, a flat disc type magnet, a fifth deep groove ball bearing, a disc type electromagnetic generator stator, a sixth shaft end retaining ring, and an annular cylindrical coil; The fixed base is fixedly installed in the beach shallow water area soil through the telescopic support rod; The buoy is fixedly attached to the outer sleeve by bonding; The top of the internally threaded barrel is fixed to the inner top of the outer sleeve by an inner hexagon screw; The inner sleeve barrel is installed on the fixed base, and the outer sleeve is sleeved on the inner sleeve barrel; The piezoelectric sheets are adhered to the cantilever beam with glue; the vibrating end of the cantilever beam is fixed to the fixed seat on the internally threaded barrel by an inner hexagon screw, the fixed end of the cantilever beam is fixed to the cantilever beam fixing base by an inner hexagon screw, and the cantilever beam fixing base is fixedly connected to the top cover of the inner sleeve barrel by an inner hexagon screw; The top cover of the inner sleeve barrel is fixed to the top of the inner sleeve barrel with a sealant waterproof glue; The screw rod meshes with the internally threaded barrel; the outer ring of the first deep groove ball bearing is installed on the bearing seat of the internal cylindrical gear ring, and the screw rod is installed on the inner ring of the first deep groove ball bearing; a keyway is opened on the end shaft of the screw rod, and it is circumferentially connected and fixed to the planetary gear carrier with a flat key; the first shaft end retaining ring is used for the axial fixation of the screw rod and the planetary gear carrier; The internal cylindrical gear ring is fixedly installed on the inner wall boss of the inner sleeve barrel by an inner hexagon screw; The outer ring of the second deep groove ball bearing is fixedly installed on the bearing seat of the planetary gear carrier; the first planetary cylindrical gear shaft is installed in the inner ring of the second deep groove ball bearing and can rotate together with the inner ring of the second deep groove ball bearing; the second shaft end retaining ring fits on the inner ring of the second deep groove ball bearing to axially fix the first planetary cylindrical gear shaft; The outer ring of the third deep groove ball bearing is fixedly installed on the bearing seat of the planetary gear carrier; the second planetary cylindrical gear shaft is installed in the inner ring of the third deep groove ball bearing and can rotate together with the inner ring of the third deep groove ball bearing; the third shaft end retaining ring fits on the inner ring of the third deep groove ball bearing to axially fix the second planetary cylindrical gear shaft; The outer ring of the fourth deep groove ball bearing is fixedly installed on the bearing seat of the planetary gear carrier; the third planetary cylindrical gear shaft is installed on the inner ring of the fourth deep groove ball bearing and can rotate together with the inner ring of the fourth deep groove ball bearing; the fourth shaft end retaining ring is attached to the inner ring of the fourth deep groove ball bearing to axially fix the third planetary cylindrical gear shaft; On the back side of the first planetary cylindrical gear, a cylindrical boss is machined, and a threaded hole is machined on the boss, and it is fixedly connected to the first planetary cylindrical gear shaft by using a set screw; on the back side of the second planetary cylindrical gear, a cylindrical boss is machined, and a threaded hole is machined on the boss, and it is fixedly connected to the second planetary cylindrical gear shaft by using a set screw; on the back side of the third planetary cylindrical gear, a cylindrical boss is machined, and a threaded hole is machined on the boss, and it is fixedly connected to the third planetary cylindrical gear shaft by using a set screw; The first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear are simultaneously meshed with the inner cylindrical gear internally; the central cylindrical gear is simultaneously meshed with the first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear externally; The central cylindrical gear is circumferentially fixedly connected to the central cylindrical gear shaft by a flat key; the central cylindrical gear and the central cylindrical gear shaft are axially fixed by a fifth shaft end retaining ring; On the top of the rotor of the disk-type electromagnetic generator, a cylindrical boss is machined, and a threaded hole is machined on the boss, and it is fixedly connected to the central cylindrical gear shaft by using a set screw; the flat and circular sheet magnet is fixedly installed in the corresponding circular groove of the rotor of the disk-type electromagnetic generator by adhesive bonding; The outer ring of the fifth deep groove ball bearing is fixedly installed on the bearing seat hole at the center of the stator of the disk-type electromagnetic generator; the central cylindrical gear shaft is installed on the inner ring of the fifth deep groove ball bearing and can rotate together with the inner ring of the fifth deep groove ball bearing; the sixth shaft end retaining ring is attached to the inner ring of the fifth deep groove ball bearing to axially fix the central cylindrical gear shaft; The annular cylindrical coil is fixedly installed on the fixed seat of the disk-shaped electromagnetic generator stator; The disk-shaped electromagnetic generator stator is fixedly installed at the bottom of the inner sleeve by using hexagon socket head cap screws; 2. The wave energy harvesting device according to claim 1, wherein When the buoy in the wave capture part is affected by the change of the wave buoyancy, it will drive the outer sleeve to float up and down, and at the same time drive the inner threaded barrel to reciprocate up and down; the inner threaded barrel can input the captured wave energy into the piezoelectric power generation structure and the electromagnetic power generation structure in the wave energy conversion part respectively, and the above two power generation structures can move independently without interference, and at the same time realize the collection of electrical energy in two different voltage forms.

3. According to claim 1 and claim 2, characterized in that, In the piezoelectric power generation structure of the wave energy conversion part: the cantilever beam is fixed at one end and movable at the other end; when the inner threaded barrel reciprocates up and down, the inner threaded barrel drives the movable end of the cantilever beam to vibrate up and down through the fixed seat on it, so that the piezoelectric sheet adhered to the cantilever beam is finally subjected to pressure to generate electrical energy.

4. According to claim 1 and claim 2, characterized in that, In the electromagnetic power generation structure of the wave energy conversion part: the spiral rod meshes with the inner-threaded barrel, converting the reciprocating linear motion of the inner-threaded barrel into the rotational motion of the spiral rod; the spiral rod transmits the motion to the planetary gear carrier; the first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear are respectively installed on the first planetary cylindrical gear shaft, the second planetary cylindrical gear shaft, and the third planetary cylindrical gear shaft; the first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear are respectively in internal meshing with the fixed internal cylindrical gear ring and in external meshing with the central cylindrical gear; through the rotational motion of the planetary gear carrier, the first planetary cylindrical gear, the second planetary cylindrical gear, and the third planetary cylindrical gear rotate and revolve simultaneously, so that the central cylindrical gear generates a rotational motion; the central cylindrical gear transmits the motion to the central cylindrical gear shaft, and drives the rotor of the disk-type electromagnetic generator to rotate through the central cylindrical gear shaft, thereby generating electric energy.

5. As described in claims 1 and 4, the internal cylindrical gear ring is fixed and the central cylindrical gear rotates; together with the planetary gear carrier, the internal cylindrical gear ring, the first planetary cylindrical gear shaft, the first planetary cylindrical gear, the second planetary cylindrical gear shaft, the second planetary cylindrical gear, the third planetary cylindrical gear shaft, and the third planetary cylindrical gear, it forms a single-degree-of-freedom planetary cylindrical gear train; the planetary gear carrier serves as the power input end of the gear train, and the central cylindrical gear serves as the power output end of the gear train.

6. According to claim 1 and claim 2, it is characterized in that The wave energy conversion part in the device has two electric energy output methods: pressure power generation and electromagnetic power generation. The electric energy generated by the pressure power generation method has the characteristics of high voltage and low current, and the output voltage can be used as a sensing detection signal to detect the motion state of ocean waves; the electric energy generated by the electromagnetic power generation method has the characteristics of high current and high power and can be used for the energy supply application of the energy collection device; the combination of the piezoelectric and electromagnetic power generation methods in the wave energy conversion part can simultaneously achieve the functions of power supply and sensing detection.

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