Support for offshore floating type photovoltaic power generation device, using method and power generation device

Abstract

The invention belongs to the technical field of offshore floating type power generation devices, and provides a bracket for an offshore floating type photovoltaic power generation device, a use method and a power generation device, one end of a fixed part for mounting a photovoltaic panel is hinged to a floating part through a first hinge part, and a torsional spring is arranged on the first hinge part; a sliding rail is arranged on the floating piece, an arc part is arranged at the end, close to the first hinge piece, of the sliding rail, a supporting rod is hinged to the other end of the fixing piece through a second hinge piece, a spherical sliding block is arranged on the supporting rod, and the spherical sliding block is arranged in the arc part in a sliding mode; when the force of a typhoon blowing to the photovoltaic panel is larger than a certain value, the spherical sliding block can slide out of the arc part and slide along the sliding rail to reduce the angle of the photovoltaic panel and reduce the windward area, meanwhile, the torsion spring stores force, and when the force of the typhoon blowing to the photovoltaic panel on the fixing piece is reduced, the torsion spring releases energy, so that the photovoltaic panel is fixed. And the spherical slide block slides on the slide rail along the opposite direction to increase the angle of the photovoltaic panel until the spherical slide block slides into the arc part.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore floating power generation devices, and particularly relates to a bracket, a usage method and a power generation device for an offshore floating photovoltaic power generation device. Background Art

[0002] Existing offshore floating photovoltaic devices have deficiencies in typhoon resistance. When a typhoon hits, the device is easily damaged, resulting in problems such as damage to photovoltaic panels and damage to the overall structure. The maintenance cost is high, seriously affecting the economy and stability of offshore photovoltaic power generation.

[0003] Existing typhoon resistance measures generally use complex structure devices and rely on electronic control systems, which have problems such as high cost and easy failure. Compared with the relatively small power generation of photovoltaics, it is difficult to recover the cost by using a complex control system. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a bracket, a usage method and a power generation device for an offshore floating photovoltaic power generation device. When the force of the typhoon blowing on the photovoltaic panel on the fixing member is greater than a certain value, the spherical slider provided on the support rod can slide out of the arc portion and slide along the slide rail to reduce the angle of the photovoltaic panel, thereby achieving the purpose of reducing the windward area. At the same time, during the sliding process along the slide rail, the torsion spring stores energy. When the force of the typhoon blowing on the photovoltaic panel on the fixing member decreases, the torsion spring releases energy, causing the spherical slider to slide in the opposite direction on the slide rail to increase the angle of the photovoltaic panel until the spherical slider slides into the arc portion.

[0005] To achieve the above object, in the first aspect, the present invention provides a bracket for an offshore floating photovoltaic power generation device, adopting the following technical solutions:

[0006] A bracket for an offshore floating photovoltaic power generation device includes a floating member and a fixing member capable of installing a photovoltaic panel;

[0007] One end of the fixing member is hinged to the floating member through a first hinge member; a torsion spring is provided on the first hinge member;

[0008] The floating member is provided with a slide rail, and an arc portion is provided at one end of the slide rail close to the first hinge member; the other end of the fixing member is hinged with a support rod through a second hinge member; a spherical slider is provided at the end of the support rod away from the fixing member, and the spherical slider is movably arranged in the arc portion.

[0009] Further, a groove is formed on the floating member, and the slide rail is arranged in the groove.

[0010] Further, the slide rail includes an inclined portion, and the arc portion is provided at one end of the inclined portion close to the first hinge member; the height of the inclined portion at the end close to the first hinge member is greater than the height of the end far from the first hinge member.

[0011] Further, the support rod is inclined.

[0012] Further, one end of the support rod close to the second hinge member inclines towards the first hinge member, and one end of the support rod close to the arc portion inclines away from the first hinge member.

[0013] Further, an anchor is provided on the floating member through a mooring line.

[0014] Further, the torsional stiffness k of the torsion spring t is:

[0015]

[0016] where M g is the moment generated by the self-weight of the photovoltaic panel; θ is the inclination angle of the photovoltaic panel; T spring is the restoring moment of the torsion spring.

[0017] Further, the radius R of the arc portion is:

[0018]

[0019]

[0020] A = L·H·sinθ;

[0021] where g is the acceleration due to gravity, 9.8 N / kg; F w is the maximum wind load; μ is the friction coefficient; m is the mass of the photovoltaic panel; P w is the wind pressure; A is the windward area; ρ is the air density; C d is the wind pressure coefficient; C z is the height correction coefficient; v is the wind speed; L is the length of the photovoltaic panel; H is the height of the photovoltaic panel.

[0022] To achieve the above object, in a second aspect, the present invention also provides a method for using a bracket for a floating photovoltaic power generation device at sea, adopting the following technical solution:

[0023] A method for using a bracket for an offshore floating photovoltaic power generation device, which uses the bracket for an offshore floating photovoltaic power generation device described in the first aspect, includes: when the force of the typhoon blowing towards the photovoltaic panel is greater than a preset value, the spherical slider slides out within the arc portion, slides along the slide rail to reduce the angle of the photovoltaic panel, and at the same time, the torsion spring stores energy; when the force of the typhoon blowing towards the photovoltaic panel decreases, the torsion spring releases energy, causing the spherical slider to slide in the opposite direction on the slide rail to increase the inclination angle of the photovoltaic panel until the spherical slider enters the arc portion.

[0024] In order to achieve the above object, in the third aspect, the present invention also provides a power generation device, adopting the following technical solution:

[0025] A power generation device includes a photovoltaic panel and a bracket for an offshore floating photovoltaic power generation device described in the first aspect for supporting the photovoltaic panel.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In the present invention, one end of the fixing member for installing the photovoltaic panel is hinged to the floating member through a first hinge member, and a torsion spring is provided on the first hinge member; a slide rail is provided on the floating member, and an arc portion is provided at one end of the slide rail close to the first hinge member. The other end of the fixing member is hinged with a support rod through a second hinge member, and a spherical slider is provided on the support rod. The spherical slider is slidably arranged within the arc portion; when the force of the typhoon blowing towards the photovoltaic panel on the fixing member is greater than a certain value, the spherical slider provided on the support rod can slide out within the arc portion and slide along the slide rail to reduce the angle of the photovoltaic panel, thereby achieving the purpose of reducing the windward area. At the same time, during the sliding along the slide rail, the torsion spring stores energy. When the force of the typhoon blowing towards the photovoltaic panel on the fixing member decreases, the torsion spring releases energy, causing the spherical slider to slide in the opposite direction on the slide rail to increase the angle of the photovoltaic panel until the spherical slider slides into the arc portion; the entire adjustment and wind resistance process does not require an electronic control system, and the overall structure is simple. Description of the Drawings

[0028] The specification drawings constituting a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments and descriptions thereof of this embodiment are used to explain this embodiment and do not constitute an improper limitation to this embodiment.

[0029] Figure 1 Schematic diagram of the bracket structure of Embodiment 1 of the present invention;

[0030] Figure 2 Schematic diagram of the anchor setting of Embodiment 1 of the present invention;

[0031] Among them, 1. Floating member; 101. Floating member body; 102. Groove; 2. Torsion spring; 3. First hinge member; 4. Fixing member; 5. Slide rail; 501. Inclined portion; 502. Arc portion; 6. Spherical slider; 7. Support rod; 8. Second hinge member; 9. Mooring line; 10. Anchor; 11. Photovoltaic panel. Detailed implementation mode

[0032] The present invention will be further described below in conjunction with the drawings and embodiments.

[0033] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further descriptions of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0034] Embodiment 1:

[0035] As Figure 1 and Figure 2 shown, this embodiment provides a bracket for an offshore floating photovoltaic power generation device, including a floating member 1, a torsion spring 2, a first hinge member 3, a fixing member 4, a slide rail 5, a spherical slider 6, a support rod 7, a second hinge member 8, a mooring line 9, an anchor 10, a photovoltaic panel 11, etc.

[0036] The floating member 1 can float on the sea surface and is used to support the entire bracket and power generation device on the sea; it can be set as a floating board, a floating column, a floating barrel or other structures that can float on the sea surface. In some embodiments, optionally, the floating member 1 is a hollow floating barrel structure made of high-density polyethylene (HDPE) material. This material has the characteristics of light weight, high strength and strong corrosion resistance. Its shape is designed as a streamline with good hydrodynamic performance to reduce the impact of water flow on the device; the floating member 1 has multiple compartments inside to enhance its stability and anti-sinking performance.

[0037] The floating member 1 includes a floating member body 101 and a groove 102 provided on the floating member body 101. The groove 102 can be selected as a long groove mechanism or a groove body structure of other shapes; the groove 102 is used to accommodate the slide rail 5. When the spherical slider 6 slides along the slide rail 5, the two sides of the groove 102 can limit the maximum movement position of the support rod 7, playing a limiting role.

[0038] The fixing member 4 is used to install and fix the photovoltaic panel 11, and the installation and fixing method can be welding, bolt connection, clamping or other installation and fixing methods. The fixing member 4 can be set as a frame structure or other brackets capable of installing and fixing the photovoltaic panel 11; for example, the fixing member 4 is made of lightweight and high-strength aluminum alloy material, and its structural design can ensure the stability of the installation of the photovoltaic panel 11 and provide reliable support for the subsequent angle adjustment mechanism.

[0039] One end of the fixing member 4 is hinged to the floating member 1 through the first hinge member 3; when adjusting the inclination degree of the photovoltaic panel 11 by changing the angle of the fixing member 4, the fixing member 4 rotates around the floating member 1 under the action of the first hinge member 3; the purpose of adjusting the inclination degree of the photovoltaic panel 11 is to adjust the light intensity of the photovoltaic panel 11 and the windward area of the photovoltaic panel 11, etc.

[0040] The first hinge member 3 can adopt a rotating shaft or other hinge structures, as long as it can enable the fixing member 4 to be hinged to the floating member 1.

[0041] The torsion spring 2 is arranged on the first hinge member 3, and the torsion spring 2 is used to realize the automatic reset when adjusting the inclination of the photovoltaic panel 11; for example, when the typhoon is strong and it is necessary to reduce the inclination degree of the photovoltaic panel 11, during the rotation of the fixing member 4 around the first hinge member 3, the torsion spring 2 stores energy; when the typhoon becomes smaller or disappears, the torsion spring 2 releases energy and drives the fixing member 4 to rotate around the first hinge member 3 in the opposite direction until the fixing member 4 is reset. The torsion spring 2 can adopt various forms of springs. One setting method of the torsion spring 2 is that the torsion spring 2 is sleeved on the first hinge member 3, one end of the torsion spring 2 is connected to the fixing member 4, and the other end is connected to the floating member 1. In some embodiments, the torsion spring 2 adopts a double torsion spring structure, the rotation directions of the two torsion springs are opposite, and it is installed in cooperation with the connecting shafts of the fixing member 4 and the floating member 1 through the middle connecting sleeve; parameters such as the wire diameter, inner diameter, and effective number of turns of the torsion spring 2 are optimized according to the moment of inertia of the photovoltaic panel 11 and the required damping torque, so that under the action of typhoon wind force, the photovoltaic panel 11 can rotate smoothly to a suitable wind-resistant angle, and after the typhoon, the photovoltaic panel can gradually return to the initial working angle by means of the restoring force of the torsion spring.

[0042] The slide rail 5 can be set as a chute structure, such as an arc chute or other track grooves; the slide rail 5 can be set as an independent part in the groove 102, or designed and set in the groove 102 as a whole with the floating member 1.

[0043] The sliding rail 5 includes an inclined portion 501 and an arc portion 502 provided at one end of the inclined portion 501; an arc-shaped groove or other track grooves are formed on the inclined portion 501. Optionally, the arc portion 502 is provided at one end of the inclined portion 501 close to the first hinge member 3; the height of the inclined portion 501 at one end close to the first hinge member 3 is greater than the height at the end far from the first hinge member 3, so that the sliding of the spherical slider 6 is relatively smooth.

[0044] In this embodiment, the arc portion 502 is integrally formed as an arc structure. In other embodiments, the arc portion 502 can also be provided as two arc structures connected to each other; the radius of the arc structure at one end close to the first hinge member 3 is smaller than the radius of the arc structure at the end far from the first hinge member 3, which is beneficial for the spherical slider 6 to transition from the arc portion 502 to the inclined portion 501.

[0045] The spherical slider 6 can be a sphere, a wheel or other structures capable of sliding on the sliding rail 5. The support rod 7 can be a cylinder or other support structures. The spherical slider 6 can be arranged on the support rod 7 by welding, bolt connection or other connection methods. At least one set of the support rod 7 and the spherical slider 6 is provided, and the number of sets can be flexibly selected according to the structure and weight of the fixing member 4 and the photovoltaic panel 11, etc.; the position of the support rod 7 on the fixing member 4 can be flexibly set according to the structure and weight of the fixing member 4 and the photovoltaic panel 11, etc.

[0046] One end of the support rod 7 close to the second hinge member 8 inclines towards the first hinge member 3, and one end of the support rod 7 close to the arc portion 502 inclines away from the first hinge member 3, always keeping the support rod 7 in a compressed state.

[0047] One end of the support rod 7 far from the spherical slider 6 is hinged to the fixing member 4 through the second hinge member 8. When the spherical slider 6 slides on the sliding rail 5, the support rod 7 rotates around the fixing member 4 under the action of the second hinge member 8. The second hinge member 8 can be a rotating shaft or other hinge structures, as long as the support rod 7 can be hinged to the fixing member 4.

[0048] In order to improve the stability of the overall support and the power generation device in seawater; in this embodiment, on the floating member 1, a plurality of anchors 10 are arranged through a mooring line 9. The anchors 10 can be fixed to the seabed to provide stable anchoring for the entire device, avoiding large changes in the position of the overall support and the power generation device due to the action of sea waves or sea winds, and improving the stability. Optionally, the mooring line 9 is selected as a high-strength and corrosion-resistant rope, for example, made of ultra-high molecular weight polyethylene fiber, which has good tensile strength and seawater erosion resistance. One end is connected to the anchor 10 and the other end is connected to the floating member 1 to fix the support and the entire power generation device at a predetermined sea area position.

[0049] Optionally, buffer rubber pads are provided at the four corners of the floating member 1 to prevent hard collisions with other components during rotation.

[0050] Through the above settings, in this embodiment, through the designed mechanical structure, the support rod 7, the torsion spring 2, the slide rail 5 and the spherical slider 6 work together to automatically adjust the angle of the photovoltaic panel 11 to reduce the angle with the horizontal plane when a typhoon comes, so as to reduce the windward area and improve the stability of the support in a typhoon environment. After the typhoon, the elastic potential energy stored in the torsion spring 2 is released, and the spherical slider 6 slides back to the original position along the slide rail 5 with a gentle inclination angle, and the photovoltaic panel 11 rotates back to its original position. The entire anti-typhoon system does not require any artificial power device, and only relies on the mechanical structure to realize the automatic inclination and return of the photovoltaic panel.

[0051] One of the working processes or principles of this embodiment is:

[0052] When the spherical slider 6 is located in the arc section 502, the resistance it receives is very large, which can support the photovoltaic panel 11. When the spherical slider 6 is located in the inclined section 501, the resistance is smaller, ensuring that the photovoltaic panel 11 slowly rotates to reduce the inclination angle under the action of the wind and the torsion spring 2, and at the same time can return to the initial angle under the action of the torsion spring 2. The spherical slider 6 is reset into the arc section 502 at the same time to support the photovoltaic panel 11. When a typhoon comes, the wind force increases enough to make the spherical slider 6 slide out of the arc section 502 and then slide left along the inclined section 501. At the same time, the fixing member 4 rotates around the first hinge member, and the torsion spring 2 is compressed to store a certain amount of elastic potential energy. After the typhoon leaves, the elastic potential energy stored in the torsion spring 2 is released, and the spherical slider 6 climbs to the right along the arc section 502, providing a certain damping for the reset of the photovoltaic panel 11, so that the photovoltaic panel 11 slowly returns to its original position under the action of the torsion spring 2. The support rod 7 is a lightweight, corrosion-resistant and anti-fatigue support link, which has the advantages of high strength, small weight and not easy to corrode.

[0053] In this embodiment, in order to meet the design requirements of the torsion spring 2 and the arc portion 502, etc., optionally, the torsional stiffness k of the torsion spring 2 t is:

[0054]

[0055] where M g is the moment generated by the self-weight of the photovoltaic panel; θ is the tilt angle of the photovoltaic panel; T spring is the restoring moment of the torsion spring.

[0056] Optionally, the radius R of the arc portion 502 is:

[0057]

[0058] A = L·H·sinθ

[0059] where g is the acceleration due to gravity, 9.8 N / kg; F w is the maximum wind load; μ is the friction coefficient; m is the mass of the photovoltaic panel; P w is the wind pressure; A is the windward area; ρ is the air density; C d is the wind pressure coefficient; C z is the height correction coefficient; v is the wind speed; L is the length of the photovoltaic panel; H is the height of the photovoltaic panel.

[0060] Embodiment 2:

[0061] Based on Embodiment 1, this embodiment provides a bracket for a floating photovoltaic power generation device at sea, mainly designing the torsion spring 2 and the slide rail 5, specifically:

[0062] S1. Calculate the wind load:

[0063] First, obtain the maximum wind speed in the preset sea area, and then calculate the maximum wind load F that the photovoltaic panel 11 may be subjected to according to formula (1), formula (2) and formula (3) w .

[0064] S1.1. Calculate the wind pressure P w :

[0065]

[0066] S1.2. The windward area A of the photovoltaic panel 11:

[0067] A = L·H·sinθ (2)

[0068] S1.3. Wind force calculation (maximum wind load) F w :

[0069]

[0070] Among them, P w is the wind pressure (Pa (N / m 2 )); ρ is the air density (kg / m 3 ); C d is the wind pressure coefficient (related to the inclination angle); C z is the height correction coefficient; v is the wind speed (m / s); A is the windward area (m 2 ); L is the length of the photovoltaic panel 11 (m); H is the height of the photovoltaic panel 11 (m); θ is the tilt angle of the photovoltaic panel 11 (rad).

[0071] S2. Design of the torsion spring 2

[0072] The torsional stiffness of the torsion spring 2 should ensure that it can support the photovoltaic panel 11 at a specified angle alone. The calculation process is as follows:

[0073] S2.1. Moment generated by the self-weight of the photovoltaic panel 11 (which can be understood as the photovoltaic panel 11 and / or the photovoltaic panel 11 and the fixing frame 4):

[0074] M g = G·l g (4)

[0075] S2.2. The restoring moment of the torsion spring 2 is:

[0076] T spring = k t ·θ (5)

[0077] S2.3. The moment balance equation is:

[0078] T spring = M g (6)

[0079] S2.4. Considering a 10% safety margin, the stiffness of the torsion spring 2 obtained through the above is:

[0080]

[0081] Among them, M g is the self-weight moment (N·m); G is the self-weight of the photovoltaic panel 11 (N); k t is the stiffness of the torsion spring 2 (N·m / rad).

[0082] S2.5. The relationship between the geometric parameters of the torsion spring 2 and the stiffness k t is given by the stiffness formula of the torsion spring 2:

[0083]

[0084] Among them, G is the shear modulus (GPa) of the material of the torsion spring 2; d is the wire diameter (m) of the torsion spring 2; D is the mean diameter (m) of the torsion spring 2; n is the number of effective turns of the spring (the number of turns participating in deformation).

[0085] S3. Design of the slide rail 5:

[0086] S3.1. First, determine the arc radius R of the arc portion 502. When the normal support force of the spherical slider 6 from the arc portion 502 is zero, according to the centripetal force condition:

[0087]

[0088] S3.2. Second, determine the separation angle θ. Using the kinetic energy theorem, combined with the maximum wind force F w doing work and energy conservation, approximately solve to obtain:

[0089]

[0090] S3.3. Finally, determine the friction coefficient μ. When moving at a constant speed in the straight section, the resultant force is zero, and we get:

[0091]

[0092] Since the typhoon levels in different regions are different, it is necessary to conduct a 1:1 model test according to different regions to determine the type of photovoltaic panel, the size of the device, especially the selection of the torsion spring 2 and the slide rail 5.

[0093] The bracket for the offshore floating photovoltaic power generation device in this embodiment includes all the technical features of the bracket in Embodiment 1, which will not be elaborated here.

[0094] Embodiment 3:

[0095] This embodiment provides a method for using a bracket for an offshore floating photovoltaic power generation device, which uses the bracket for an offshore floating photovoltaic power generation device as described in Embodiment 1 and / or Embodiment 2, including: when the force of the typhoon blowing towards the photovoltaic panel 11 is greater than the preset value, the spherical slider 6 slides out within the arc portion 502, slides along the slide rail 5 to reduce the angle of the photovoltaic panel 11, and at the same time, the torsion spring 2 stores energy; when the force of the typhoon blowing towards the photovoltaic panel 11 decreases, the torsion spring 2 releases energy, causing the spherical slider 6 to slide in the opposite direction on the slide rail 5 to increase the inclination angle of the photovoltaic panel 11 until the spherical slider 6 enters the arc portion 502.

[0096] Embodiment 4:

[0097] This embodiment provides a power generation device, including a photovoltaic panel 11 and a bracket for supporting the photovoltaic panel 11 as described in Embodiment 1 and / or Embodiment 2 for the offshore floating photovoltaic power generation device. Other structures and settings of the power generation device can be achieved through conventional technologies and will not be elaborated here.

[0098] The above are only the preferred embodiments of this embodiment and are not intended to limit this embodiment. For those skilled in the art, various changes and modifications can be made to this embodiment. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this embodiment shall be included within the protection scope of this embodiment.

Claims

1. A support for an offshore floating photovoltaic power generation device, characterized in that: It comprises a floating member (1) and a fixing member (4) capable of installing a photovoltaic panel (11); One end of the fixing member (4) is hingedly arranged on the floating member (1) via a first hinge member (3); a torsion spring (2) is arranged on the first hinge member (3); The floating member (1) is provided with a slide rail (5), and an arc portion (502) is provided at one end of the slide rail (5) close to the first hinged member (3); the other end of the fixed member (4) is hingedly connected to a support rod (7) via a second hinged member (8); the support rod (7) is provided with a spherical slider (6) at one end away from the fixed member (4), and the spherical slider (6) is movably arranged in the arc portion (502).

2. The support for an offshore floating photovoltaic power generation device according to claim 1, characterized in that: The floating member (1) is provided with a groove (102), and the slide rail (5) is arranged in the groove (102).

3. The support for an offshore floating photovoltaic power generation device according to claim 1, characterized in that: The slide rail (5) comprises an inclined portion (501), and the arc portion (502) is arranged at an end of the inclined portion (501) close to the first hinge (3); the height of the inclined portion (501) close to the first hinge (3) is greater than the height of the end away from the first hinge (3).

4. The support for an offshore floating photovoltaic power generation device according to claim 1, characterized in that: The support rod (7) is arranged obliquely.

5. The support for an offshore floating photovoltaic power generation device according to claim 4, characterized in that: One end of the support rod (7) close to the second hinge (8) is inclined towards the direction of the first hinge (3), and one end of the support rod (7) close to the arc portion (502) is inclined away from the first hinge (3).

6. The support for an offshore floating photovoltaic power generation device according to claim 1, characterized in that: An anchor (10) is arranged on the floating member (1) via a mooring line (9).

7. The support for an offshore floating photovoltaic power generation device according to claim 1, characterized in that: The torsional stiffness k of the torsion spring (2) is t for: Among them, M g is the torque generated by the weight of the photovoltaic panel; θ is the tilt angle of the photovoltaic panel; T spring is the restoring torque of the torsion spring.

8. The support for an offshore floating photovoltaic power generation device according to claim 1, characterized in that: The radius R of the arc portion (502) is: A=L·H·sinθ; Where g is the acceleration due to gravity; F w is the maximum wind load; μ is the friction coefficient; m is the mass of the photovoltaic panel; P w is wind pressure; A is windward area; ρ is air density; C d is the wind pressure coefficient; C z is the height correction coefficient; v is the wind speed; L is the length of the photovoltaic panel; H is the height of the photovoltaic panel.

9. A method for using a bracket for an offshore floating photovoltaic power generation device, characterized in that: A support for an offshore floating photovoltaic power generation device as described in any one of claims 1 to 8 is used, comprising: when the force of a typhoon blowing toward the photovoltaic panel (11) is greater than a preset value, the spherical slider (6) slides out in the arc portion (502), slides along the slide rail (5) to lower the angle of the photovoltaic panel (11), and at the same time the torsion spring (2) stores force; when the force of the typhoon blowing toward the photovoltaic panel (11) decreases, the torsion spring (2) releases energy, causing the spherical slider (6) to slide in the opposite direction on the slide rail (5), increasing the inclination angle of the photovoltaic panel (11), until the spherical slider (6) enters the arc portion (502).

10. A power generation device, characterized in that: It comprises a photovoltaic panel (11), and a bracket for an offshore floating photovoltaic power generation device as claimed in any one of claims 1 to 8, which is used for supporting the photovoltaic panel (11).

Images