Power generation device based on wave energy and buoy applying same

Abstract

The invention discloses a wave energy-based power generation device and a buoy applying the same. The wave energy-based power generation device comprises a first wheel disc, a second wheel disc, a transmission rack, a cylindrical gear, a generator set and an impeller, the first wheel disc and the second wheel disc rotate synchronously in the same direction, the first end of the transmission rack is hinged to the end face of the first wheel disc, and the second end of the transmission rack is hinged to the end face of the second wheel disc. The impeller is used for being driven by waves to rotate, and at least one of the first wheel disc and the second wheel disc is in linkage with the impeller, so that when the waves drive the impeller to rotate, the first wheel disc and the second wheel disc can be driven to rotate synchronously; the columnar gear and the transmission rack are in engaged transmission arrangement, so that when the first wheel disc and the second wheel disc rotate synchronously, the transmission rack drives the columnar gear to rotate; the cylindrical gear is used for driving the generator set to generate electricity. The device has the characteristic of simple and compact structure, the number of parts is reduced, the production cost is reduced, and large-scale popularization and application are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy utilization devices, and in particular to a wave energy-based power generation device and a buoy using the same. Background Art

[0002] Wave energy is widely present in the ocean and is one of the main sources of ocean energy. It is the kinetic energy and potential energy of waves on the ocean surface, and has the advantages of high energy density and wide distribution. How to convert wave energy into electrical energy is of great significance to the development of ocean energy. For this reason, humans have been developing and improving wave energy power generation devices; however, the existing wave energy power generation devices have complex structures and high production costs, which are not conducive to their widespread promotion and use. Summary of the invention

[0003] The object of the present invention is to provide a wave energy-based power generation device and a buoy using the same, so as to solve one or more of the above-mentioned problems in the prior art.

[0004] The present invention provides a wave energy-based power generation device, which comprises: a first wheel disc, a second wheel disc, a transmission rack, a columnar gear, a generator set and an impeller;

[0005] The first wheel disc and the second wheel disc are arranged to rotate synchronously and in the same direction, the first end of the transmission rack is hinged to the end surface of the first wheel disc, and the second end of the transmission rack is hinged to the end surface of the second wheel disc;

[0006] The impeller is configured to be driven by waves to rotate, and at least one of the first wheel disc and the second wheel disc is configured in linkage with the impeller, so that when the impeller is driven by waves to rotate, the first wheel disc and the second wheel disc can be driven to rotate synchronously;

[0007] The column gear is meshed with the transmission rack for transmission, so that when the first wheel disc and the second wheel disc rotate synchronously, the transmission rack drives the column gear to rotate;

[0008] The column gear is configured to drive a generator set to generate electricity.

[0009] Since the impeller is arranged outside the buoy, the impeller is in direct contact with the waves, and the waves drive the impeller to rotate, and the impeller drives the first wheel disc and the second wheel disc to rotate synchronously and in the same direction, and the first wheel disc and the second wheel disc synchronously drive the transmission rack to produce a combined motion of vertical movement and lateral movement; since the cylindrical gear and the transmission rack are meshed and transmitted, and since the tooth grooves of the cylindrical gear are arranged along the lateral movement, the transmission rack will slide laterally with the cylindrical gear along the tooth grooves, and the lateral movement of the transmission rack will not be transmitted to the cylindrical gear; but at the same time, the vertical movement generated by the transmission rack will drive the cylindrical gear to rotate, and when the first wheel disc and the second wheel disc rotate synchronously and in the same direction for a circular stroke, the transmission rack will slide back and forth laterally on the cylindrical gear and will not be disengaged from the cylindrical gear; thereby, the cylindrical gear drives the generator set to generate electricity, providing sustainable and renewable electric energy for the normal operation of the detection buoy. The present invention has the characteristics of simple and compact structure, reduces the number of parts, reduces production costs, and is convenient for large-scale promotion and use.

[0010] In some embodiments, a first one-way ratchet structure and a second one-way ratchet structure are respectively disposed at both ends of the columnar gear, and the transmission directions of the first one-way ratchet structure and the second one-way ratchet structure are arranged to be opposite;

[0011] Two generator sets are provided, and the two generator sets are respectively arranged to transmit power to both ends of the column gear through a first one-way ratchet structure and a second one-way ratchet structure, so that when the column gear rotates forward or reversely, one of the two generator sets can generate electricity.

[0012] When rising or sinking, the impeller rotates in the opposite direction, so the column gear will also have forward and reverse rotation states. The two sets of generator sets are respectively arranged with the two ends of the column gear through the first one-way ratchet structure and the second one-way ratchet structure, so that when the column gear rotates forward or reverse, one of the two sets of generator sets can generate electricity.

[0013] In some embodiments, the first wheel disc and the second wheel disc are gears.

[0014] In some embodiments, the invention further comprises a transmission shaft and a transmission intermediate gear, wherein the impeller is arranged on a first end of the transmission shaft, and the transmission intermediate gear is arranged on a second end of the transmission shaft;

[0015] The transmission intermediate gear is arranged between the first wheel disc and the second wheel disc, and the transmission intermediate gear is meshed with the first wheel disc and the second wheel disc respectively.

[0016] In some embodiments, the first wheel disc and the second wheel disc are configured as the same gears with the same number of teeth and the same module, and the distance between the first end of the transmission rack and the center of the first wheel disc is equal to the distance between the second end of the transmission rack and the center of the second wheel disc, so that the two ends of the transmission rack swing synchronously with equal amplitude.

[0017] In this way, since the two ends of the transmission rack swing synchronously with equal amplitude, the transmission rack can slide smoothly laterally on the columnar gear, avoiding jamming.

[0018] In some embodiments, it also includes a base and a bracket, the bracket is erected on the base, the first wheel disc and the second wheel disc are pivotally arranged on the base, and the column gear is suspended above the first wheel disc and the second wheel disc through the bracket.

[0019] According to another aspect of the present invention, there is also provided a buoy, comprising: a cabin and the above-mentioned wave energy-based power generation device;

[0020] The first wheel disc, the second wheel disc, the transmission rack, the columnar gear, and the generator set are all airtightly arranged in the cabin, the transmission shaft extends from the cabin body to the outside of the cabin, and the impeller is arranged outside the cabin body.

[0021] Since the impeller is arranged outside the cabin, the impeller is in direct contact with the waves, and the waves drive the impeller to rotate, and the impeller drives the first wheel disc and the second wheel disc to rotate synchronously and in the same direction, and the first wheel disc and the second wheel disc synchronously drive the transmission rack to produce a combined motion of vertical movement and lateral movement; since the cylindrical gear and the transmission rack are meshed and transmitted, and since the tooth grooves of the cylindrical gear are arranged along the lateral movement, the transmission rack will slide laterally with the cylindrical gear along the tooth grooves, and the lateral movement of the transmission rack will not be transmitted to the cylindrical gear; but at the same time, the vertical movement generated by the transmission rack will drive the cylindrical gear to rotate, and when the first wheel disc and the second wheel disc rotate synchronously and in the same direction for a circular stroke, the transmission rack will slide back and forth laterally on the cylindrical gear and will not be disengaged from the cylindrical gear; thereby, the cylindrical gear drives the generator set to generate electricity, providing sustainable and renewable electric energy for the normal operation of the detection buoy. The present invention has the characteristics of simple and compact structure, reduces the number of parts, reduces production costs, and is convenient for large-scale promotion and use.

[0022] In some embodiments, a counterweight block is further disposed in the cabin, and the counterweight block is disposed at the bottom of the cabin.

[0023] In this way, the counterweight enhances the anti-tipping performance of the buoy.

[0024] In some embodiments, the transmission shaft extends outside the cabin along the center of gravity of the counterweight block, so that the direction of the sinking and floating movement of the cabin is perpendicular to the wave-receiving surface of the impeller.

[0025] In this way, when the waves push the buoy, the sinking and floating direction of the buoy is consistent with the direction of the center of gravity of the counterweight, that is, the sinking and floating movement of the cabin is along the direction of the center of gravity of the counterweight, and the sinking and floating direction of the cabin is perpendicular to the wave-receiving surface of the impeller, which increases the force area of ​​the impeller, thereby increasing the effective impact stroke of the impeller and the wave, and increasing the power generation efficiency of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic structural diagram of a wave energy-based power generation device according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of a top-down perspective;

[0029] Figure 3 for Figure 2 Schematic diagram of the middle transmission rack moving to the 1 / 4 stroke position;

[0030] Figure 4 for Figure 2 Schematic diagram of the middle transmission rack moving to the 2 / 4 stroke position;

[0031] Figure 5 for Figure 2 Schematic diagram of the middle transmission rack moving to the 3 / 4 stroke position;

[0032] Figure 6 For installation Figure 1 A schematic structural diagram of a buoy of a wave energy-based power generation device is shown.

[0033] Figure numbers: 1-first wheel disc, 2-second wheel disc, 3-transmission rack, 4-column gear, 5-transmission shaft, 6-impeller, 7-transmission intermediate gear, 8-machine base, 9-bracket, 10-cabin body. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of the embodiments of the present invention are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Embodiment 1

[0038] Figures 1 to 6 The structure of a wave energy-based power generation device according to an embodiment of the present invention is schematically shown.

[0039] like Figures 1 to 6As shown, the wave energy-based power generation device comprises: a first wheel disc 1, a second wheel disc 2, a transmission rack 3, a columnar gear 4, a generator set (not shown) and an impeller 6; the first wheel disc 1 and the second wheel disc 2 are arranged to rotate synchronously and in the same direction, the first end of the transmission rack 3 is hinged to the end face of the first wheel disc 1, and the second end of the transmission rack 3 is hinged to the end face of the second wheel disc 2; the impeller 6 is arranged to be driven by waves to rotate, and at least one of the first wheel disc 1 and the second wheel disc 2 is arranged in linkage with the impeller 6, so that when the wave drives the impeller 6 to rotate, it can drive the first wheel disc 1 and the second wheel disc 2 to rotate synchronously; the columnar gear 4 is meshed with the transmission rack 3 for transmission, so that when the first wheel disc 1 and the second wheel disc 2 rotate synchronously, the transmission rack 3 drives the columnar gear 4 to rotate; the columnar gear 4 is arranged to drive the generator set to generate electricity. In detail, in the present embodiment, the first wheel disc 1 and the second wheel disc 2 are both gears, and the transmission mode is set to gear transmission. In other embodiments, the specific types and specific transmission modes of the first wheel disc 1 and the second wheel disc 2 can also be appropriately adjusted according to actual conditions. For example, the first wheel disc 1 and the second wheel disc 2 can also be pulleys, and the transmission mode can also be synchronous belt transmission.

[0040] In detail, when in use, the present invention is mounted on a specific vehicle, such as a detection buoy, a channel guiding buoy, etc. In this embodiment, a detection buoy is taken as an example for detailed description. Since the impeller 6 is arranged outside the buoy, the impeller 6 is in direct contact with the waves, and the waves drive the impeller 6 to rotate, and the impeller 6 drives the first wheel disc 1 and the second wheel disc 2 to rotate synchronously and in the same direction, and the first wheel disc 1 and the second wheel disc 2 synchronously drive the transmission rack 3 to produce a combined motion of vertical movement and lateral movement; since the cylindrical gear 4 is meshed with the transmission rack 3 for transmission, and since the tooth grooves of the cylindrical gear 4 are arranged along the lateral movement, the transmission rack 3 will slide laterally with the cylindrical gear 4 along the tooth grooves, and the lateral movement of the transmission rack 3 will not be transmitted to the cylindrical gear 4; but at the same time, the vertical movement generated by the transmission rack 3 will drive the cylindrical gear 4 to rotate, and when the first wheel disc 1 and the second wheel disc 2 rotate synchronously and in the same direction for a circular stroke, the transmission rack 3 will slide back and forth laterally on the cylindrical gear 4 and will not be disengaged from the cylindrical gear 4; thereby, the cylindrical gear 4 drives the generator set to generate electricity, providing sustainable and renewable electricity for the normal operation of the detection buoy. The invention has the characteristics of simple and compact structure, reduces the number of parts and components, reduces production costs, and is convenient for large-scale promotion and use.

[0041] In this embodiment, the first one-way ratchet structure and the second one-way ratchet structure are respectively provided at both ends of the columnar gear 4, and the transmission directions of the first one-way ratchet structure and the second one-way ratchet structure are set to be opposite; two sets of generator sets are provided, and the two sets of generator sets are respectively set to be transmitted with the two ends of the columnar gear 4 through the first one-way ratchet structure and the second one-way ratchet structure, so that when the columnar gear 4 rotates forward or reversely, one of the two sets of generator sets can generate electricity. When rising or sinking, the rotation direction of the impeller 6 is opposite, so the columnar gear 4 will also have a forward and reverse state, and the two sets of generator sets are respectively set to be transmitted with the two ends of the columnar gear 4 through the first one-way ratchet structure and the second one-way ratchet structure, so that when the columnar gear 4 rotates forward or reversely, one of the two sets of generator sets can generate electricity.

[0042] In this embodiment, the first wheel disc 1 and the second wheel disc 2 are gears. Gear transmission is reliable and stable. In other embodiments, the specific types and specific transmission methods of the first wheel disc 1 and the second wheel disc 2 can also be appropriately adjusted according to actual conditions. For example, the first wheel disc 1 and the second wheel disc 2 can also be pulleys, and the transmission method can also be synchronous belt transmission.

[0043] In this embodiment, a transmission shaft 5 and a transmission intermediate gear 7 are also included, the impeller 6 is arranged on the first end of the transmission shaft 5, and the transmission intermediate gear 7 is arranged on the second end of the transmission shaft 5; the transmission intermediate gear 7 is arranged between the first wheel disc 1 and the second wheel disc 2, and the transmission intermediate gear 7 is respectively meshed with the first wheel disc 1 and the second wheel disc 2. In this way, since the transmission intermediate gear 7 is arranged between the first wheel disc 1 and the second wheel disc 2, and the transmission intermediate gear 7 is respectively meshed with the first wheel disc 1 and the second wheel disc 2, the rotation directions of the first wheel disc 1 and the second wheel disc 2 are set in the same direction.

[0044] In this embodiment, the first wheel disc 1 and the second wheel disc 2 are configured as the same gears with the same number of teeth and the same module, and the distance between the first end of the transmission rack 3 and the center of the first wheel disc 1 is equal to the distance between the second end of the transmission rack 3 and the center of the second wheel disc 2, so that the two ends of the transmission rack 3 swing synchronously with equal amplitude. In this way, since the two ends of the transmission rack 3 swing synchronously with equal amplitude, the transmission rack 3 can slide smoothly laterally on the columnar gear 4, avoiding jamming.

[0045] In this embodiment, a machine base 8 and a bracket 9 are also included. The bracket 9 is erected on the machine base 8. The first wheel disc 1 and the second wheel disc 2 are pivotally arranged on the machine base 8. The columnar gear 4 is suspended above the first wheel disc 1 and the second wheel disc 2 through the bracket 9.

[0046] Embodiment 2

[0047] like Figure 1-6As shown, according to another aspect of the present invention, a buoy is also provided, which includes: a cabin 10 and the wave energy-based power generation device in Example 1; the first wheel disc 1, the second wheel disc 2, the transmission rack 3, the columnar gear 4, and the generator set are all sealed in the cabin 10, the transmission shaft 5 extends from the cabin 10 to the outside of the cabin 10, and the impeller 6 is arranged outside the cabin 10. Since the impeller 6 is arranged outside the cabin 10, the impeller 6 is in direct contact with the waves, and the waves drive the impeller 6 to rotate, and the impeller 6 drives the first wheel disc 1 and the second wheel disc 2 to rotate synchronously and in the same direction, and the first wheel disc 1 and the second wheel disc 2 synchronously drive the transmission rack 3 to produce a combined motion of vertical movement and lateral movement; since the cylindrical gear 4 is meshed with the transmission rack 3 for transmission, and since the tooth grooves of the cylindrical gear 4 are arranged along the lateral movement, the transmission rack 3 will slide laterally with the cylindrical gear 4 along the tooth grooves, and the lateral movement of the transmission rack 3 will not be transmitted to the cylindrical gear 4; but at the same time, the vertical movement generated by the transmission rack 3 will drive the cylindrical gear 4 to rotate, and when the first wheel disc 1 and the second wheel disc 2 rotate synchronously and in the same direction for a circular stroke, the transmission rack 3 will slide back and forth laterally on the cylindrical gear 4 and will not be disengaged from the cylindrical gear 4; thereby, the cylindrical gear 4 drives the generator set to generate electricity, providing sustainable and renewable electricity for the normal operation of the detection buoy. The invention has the characteristics of simple and compact structure, reduces the number of parts and components, reduces production costs, and is convenient for large-scale promotion and use.

[0048] In detail, when the buoy is in a wave environment, the waves will push the buoy up and down; in detail, when the waves are in the rising stage, they will push the buoy to float upward. Since the impeller 6 is arranged below the buoy, the fluctuation amplitudes of the upper and lower layers of the waves are different. The upper layer of the waves has a large movement amplitude, while the lower layer of the waves has a small movement amplitude. The cabin 10 is in the upper layer of the waves, and the impeller 6 is in the lower layer of the waves. The wave-receiving surface of the impeller 6 is perpendicular to the upward movement direction of the cabin 10 (the wave-receiving surface of the impeller 6 refers to the force-bearing end surface of the impeller 6 that the waves push the impeller 6 to rotate). Then, when the waves push the buoy to float upward, the impeller 6 and the surrounding water body have a speed difference, so that the water body drives the impeller 6 to rotate in the forward direction. Similarly, when the waves are in the descending stage, the buoy temporarily loses the buoyancy support and is in a vacant state. The buoy sinks rapidly, and the impeller 6 will also sink rapidly. The impeller 6 and the surrounding water body have a speed difference, and the water body drives the impeller 6 to rotate in the reverse direction. It should be noted that, if conditions permit, the transmission shaft 5 can be appropriately extended to make the impeller 6 away from the layer affected by waves, so that the impeller 6 can have a greater speed difference with the surrounding water body.

[0049] In this embodiment, a counterweight is further provided in the cabin 10, and the counterweight is provided at the bottom of the cabin 10. In this way, the counterweight enhances the anti-dumping performance of the buoy.

[0050] In this embodiment, the transmission shaft 5 extends outside the cabin 10 along the center of gravity of the counterweight, so that the direction of the sinking and floating movement of the cabin 10 is perpendicular to the wave-receiving surface of the impeller 6. The wave-receiving surface of the impeller 6 refers to the end face that is subjected to force when the wave pushes the impeller 6 to rotate. In this way, when the wave pushes the buoy, the sinking and floating direction of the buoy is consistent with the center of gravity direction of the counterweight, that is, the sinking and floating movement of the cabin 10 is along the center of gravity direction of the counterweight, and the sinking and floating direction of the cabin 10 is perpendicular to the wave-receiving surface of the impeller 6, which increases the force-receiving area of ​​the impeller 6, thereby increasing the effective impact stroke between the impeller 6 and the wave, and increasing the power generation efficiency of the entire device.

[0051] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A wave energy-based power generation device, characterized in that: include: A first wheel disc, a second wheel disc, a transmission rack, a column gear, a generator set and an impeller; The first wheel disc and the second wheel disc are arranged to rotate synchronously and in the same direction, the first end of the transmission rack is hinged to the end surface of the first wheel disc, and the second end of the transmission rack is hinged to the end surface of the second wheel disc; The impeller is configured to be driven by waves to rotate, and at least one of the first wheel disc and the second wheel disc is arranged in linkage with the impeller, so that when the impeller is driven by waves to rotate, the first wheel disc and the second wheel disc can be driven to rotate synchronously; The column gear is meshed with the transmission rack for transmission, so that when the first wheel disc and the second wheel disc rotate synchronously, the transmission rack drives the column gear to rotate; The cylindrical gear is configured to drive the generator set to generate electricity.

2. The wave energy-based power generation device according to claim 1, characterized in that: The two ends of the columnar gear are respectively provided with a first one-way ratchet structure and a second one-way ratchet structure, and the transmission directions of the first one-way ratchet structure and the second one-way ratchet structure are set to be opposite; Two groups of the generator sets are provided, and the two groups of the generator sets are respectively arranged to transmit to the two ends of the columnar gear through the first one-way ratchet structure and the second one-way ratchet structure, so that when the columnar gear rotates forward or reversely, one of the two groups of the generator sets can generate electricity.

3. The wave energy-based power generation device according to claim 1, characterized in that: The first wheel disc and the second wheel disc are both gears.

4. The wave energy-based power generation device according to claim 3, characterized in that: It also includes a transmission shaft and a transmission intermediate gear, wherein the impeller is arranged on the first end of the transmission shaft, and the transmission intermediate gear is arranged on the second end of the transmission shaft; The transmission intermediate gear is arranged between the first wheel disc and the second wheel disc, and the transmission intermediate gear is meshed with the first wheel disc and the second wheel disc respectively.

5. The wave energy-based power generation device according to claim 4, characterized in that: The first wheel disc and the second wheel disc are configured as identical gears with the same number of teeth and the same module, and the distance between the first end of the transmission rack and the center of the first wheel disc is equal to the distance between the second end of the transmission rack and the center of the second wheel disc, so that the two ends of the transmission rack swing synchronously with equal amplitude.

6. The wave energy-based power generation device according to claim 1, characterized in that: It also includes a machine base and a bracket, wherein the bracket is erected on the machine base, the first wheel disc and the second wheel disc are pivotally arranged on the machine base, and the columnar gear is suspended above the first wheel disc and the second wheel disc through the bracket.

7. A buoy, characterized in that: A wave energy-based power generation device comprising a cabin and any one of claims 1 to 6; The first wheel disc, the second wheel disc, the transmission rack, the columnar gear, and the generator set are all airtightly arranged in the cabin, the transmission shaft extends from the cabin body to the outside of the cabin, and the impeller is arranged outside the cabin body.

8. The buoy according to claim 7, characterized in that: A counterweight block is also arranged in the cabin, and the counterweight block is arranged at the bottom of the cabin.

9. The buoy according to claim 8, characterized in that: The transmission shaft extends outside the cabin along the gravity center direction of the counterweight block, so that the sinking and floating movement direction of the cabin body is perpendicular to the wave receiving surface of the impeller.

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