Heaving floater type wave power generation device

Abstract

The invention relates to the technical field of wave power generation, in particular to a heaving floater type wave power generation device which comprises a supporting frame, a heaving floater, a driving device, a monitoring part and a control system. The support frame floats or is fixed on the sea surface; the heaving floater is connected to the supporting frame in an up-down sliding mode. The driving device is connected to the supporting frame. The output end of the driving device is connected with the heaving floater. The monitoring piece can monitor the height of sea waves; the monitoring part and the driving device are electrically connected with the control system; under the normal sea condition, when the monitoring piece monitors that the wave height is smaller than a set value, the control system controls the driving device to drive the heaving floater to descend, and the heaving floater can move up and down under the action of waves to achieve power generation; under the working condition of strong waves, when the monitoring piece monitors that the wave height is larger than a set value, the control system controls the driving device to lift the heaving floater and fix the heaving floater, and the heaving floater is prevented from violently impacting the supporting frame under the action of the strong waves.

Description

Technical Field

[0001] This invention relates to the field of wave energy generation technology, and in particular to a helical float-type wave energy generation device. Background Technology

[0002] Ocean wave energy, as a clean and renewable energy source, boasts an energy density several times that of wind energy, covers 70% of the global ocean area, and is less affected by day / night cycles and seasons than solar and wind energy, making its development value significant. Currently, wave energy power generation devices include point-suction type, oscillating water column type, and wave-overtaking type. Among these, the helical float type is a typical point-suction device. Existing helical float type wave energy power generation devices operate continuously regardless of sea conditions. Under strong wave conditions, this indiscriminate operating mode causes the helical float to severely impact the supporting structure of the power generation device, directly shortening the overall service life of the device. Summary of the Invention

[0003] Based on this, the purpose of this application is to provide a heave float-type wave energy generation device that can avoid the impact of the heave float sliding up and down on the support structure of the power generation device in strong wave environments.

[0004] The helical float-type wave energy generation device of this application includes: Support frame, which is either floating or fixed to the sea surface; A heaving float, which is slidably connected to the support frame. A drive device is connected to the support frame, and the output end of the drive device is connected to the heave float; A monitoring device configured to monitor the wave height of ocean waves; The control system includes an electrical connection between the monitoring device and the driving device. When the monitoring device detects that the wave height is greater than a set value, the control system controls the driving device to lift the swaying float and fix it in place. When the monitoring device detects that the wave height is less than the set value, the control system controls the driving device to drive the swaying float to lower and lower it, allowing the swaying float to move up and down under the action of waves.

[0005] In some embodiments, the drive device includes a constant tension winding device and a flexible traction member, one end of which is connected to the constant tension winding device and the other end of which is connected to the swaying float; the constant tension winding device is configured to wind up the flexible traction member to lift the swaying float, and the constant tension winding device is configured to unwind the flexible traction member to lower the swaying float.

[0006] In some embodiments, the constant tension winding device includes a motor, a winding wheel, a swing arm, and a counterweight pulley; The motor is connected to the support frame and electrically connected to the control system; the winding wheel is connected to the motor; one end of the swing arm is hinged to the support frame and the other end of the swing arm is connected to the counterweight pulley; one end of the flexible pulling member is connected to the winding wheel and the other end is wound around the counterweight pulley and connected to the swaying float; the counterweight pulley is configured to provide a preset tension to the flexible pulling member so that the lowered swaying float can maintain a set draft depth under the action of the preset tension.

[0007] In some embodiments, the counterweight pulley is provided with a connecting structure configured to detachably connect a counterweight to the counterweight pulley.

[0008] In some embodiments, the swaying float wave energy generation device includes a first limiting member connected to the support frame. Lifting the swaying float can cause the first limiting member to stop the swing arm, thereby preventing the swing arm from swinging upward.

[0009] In some embodiments, the helical float wave energy generation device further includes a second limiting member, which is connected to the support frame and located below the first limiting member, with a portion of the swing arm located between the first limiting member and the second limiting member.

[0010] In some embodiments, the support frame includes a buoyancy frame and a mounting frame, the buoyancy frame being anchored to the seabed, and the mounting frame including a first column, a second column, and a third column; The first column, the second column, and the third column are all fixed to the buoyancy frame. The first column, the second column, and the third column are arranged in a triangular structure, and the heave float is located in the triangular structure. The heaving float type wave energy generation device also includes multiple sliding sleeves. Each of the first column, the second column and the third column is provided with a sliding sleeve on its outer side, and each sliding sleeve is connected to the heaving float. The heave float has a wave-facing surface that is arranged facing one side of the triangular structure.

[0011] In some embodiments, the helical float-type wave energy generation device includes a hydraulic cylinder, an oil tank, a hydraulic motor, and a generator; the hydraulic cylinder includes a cylinder body and a telescopic rod, the cylinder body is connected to the buoyancy frame, the cylinder body has an oil inlet and an oil outlet, the telescopic rod is connected to the helical float, the oil inlet is connected to the oil tank, the oil outlet is connected to the oil inlet of the hydraulic motor, the oil outlet of the hydraulic motor is connected to the oil tank, and the output shaft of the hydraulic motor is drively connected to the input shaft of the generator.

[0012] In some embodiments, the buoyancy frame includes a first top beam and a second top beam located at the top of the buoyancy frame, the first top beam connecting the top of the first column and the top of the second column, the second top beam connecting the third column and the first top beam, and the first top beam and the second top beam being arranged vertically. The hydraulic cylinders are provided in multiple ways. The first top beam located between the second top beam and the first column is connected to a first number of hydraulic cylinders. The first top beam located between the second top beam and the second column is connected to the first number of hydraulic cylinders. The second top beam located between the first top beam and the third column is connected to the first number of hydraulic cylinders. The oil inlet of each hydraulic cylinder is connected to the oil storage tank, and the oil outlet of each hydraulic cylinder is connected to the oil inlet of the hydraulic motor.

[0013] In some embodiments, the helical float-type wave energy generation device further includes multiple sets of buffer sleeves. Each of the first column, the second column, and the third column is fitted with a set of the buffer sleeves. Each set of the buffer sleeves includes a first buffer sleeve and a second buffer sleeve. The first buffer sleeve and the second buffer sleeve are arranged vertically at intervals, and the sliding sleeve is arranged between the first buffer sleeve and the second buffer sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The helical float-type wave energy generation device of this application includes a support frame, a helical float, a drive device, a monitoring device, and a control system. The support frame floats or is fixed on the sea surface. The helical float is slidably connected to the support frame. The drive device is connected to the support frame, and its output end is connected to the helical float. The monitoring device is configured to monitor the wave height of the sea waves. Both the monitoring device and the drive device are electrically connected to the control system. Under normal sea conditions, when the monitoring device detects that the wave height is less than a set value, the control system controls the drive device to lower the helical float, causing it to move downwards and move up and down under the action of waves, thereby achieving the power generation function. Under strong wave conditions, when the monitoring device detects that the wave height is greater than the set value, the control system controls the drive device to raise the helical float, causing it to move upwards and fix itself, thus avoiding the violent impact on the support frame caused by the helical float sliding up and down under the action of strong waves and extending the service life of the helical float-type wave energy generation device. Attached Figure Description

[0015] Figure 1 This is an isometric view of the helical float-type wave energy generation device of this application; Figure 2 This is a side view of the helical float-type wave energy generation device of this application; Figure 3 This is a front view of the helical float-type wave energy generation device of this application; Figure 4 Isometric view of the mounting structure of the oscillating float and drive device; Figure 5 A side view of the mounting structure of the oscillating float and drive device when the swing arm is at its upper swing limit position; Figure 6 A side view of the mounting structure of the oscillating float and drive device when the swing arm is at its lowest swing position; Figure 7 Front view of the mounting structure of the oscillating float and drive device; Figure 8 A top view of the mounting structure of the oscillating float and drive mechanism; In the diagram, 1. Support frame, 11. Buoyancy frame, 111. First top beam, 112. Second top beam, 113. Support column, 12. Mounting frame, 121. First column, 122. Second column, 123. Third column, 2. Heave float, 21. Wave-facing surface, 3. Drive device, 31. Constant tension winding device, 311. Motor, 312. Winding wheel, 313. Swing arm, 314. Counterweight pulley, 32. Flexible traction component, 33. Reversing pulley, 41. First limiting component, 42. Second limiting component, 5. Sliding sleeve, 6. Hydraulic cylinder, 61. Cylinder body, 62. Telescopic rod, 71. First buffer sleeve, 72. Second buffer sleeve. Detailed Implementation

[0016] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0018] like Figures 1 to 8 As shown, a preferred embodiment of the helical float-type wave energy generation device of this application includes a support frame 1, a helical float 2, a drive device 3, a monitoring device, and a control system; the support frame 1 floats or is fixed on the sea surface, and the support frame 1 serves as the mounting base for the helical float-type wave energy generation device; the helical float 2 is slidably connected to the support frame 1; the drive device 3 is connected to the support frame 1; and the output end of the drive device 3 is connected to the helical float 2; the monitoring device is configured to monitor the wave height of the sea waves; the monitoring device can be a wave radar. Both the monitoring device and the drive unit 3 are electrically connected to the control system. When the monitoring device detects that the wave height is greater than the set value, it indicates that the device is in a strong wave condition. At this time, the control system controls the drive unit 3 to lift the swaying float 2 and fix it in place, so as to prevent the swaying float 2 from being violently impacted by the strong waves and thus extend the service life of the swaying float wave energy generator. When the monitoring device detects that the wave height is less than the set value, the control system controls the drive unit 3 to drive the swaying float 2 to move down and enable the swaying float 2 to move up and down under the action of the waves, so that the swaying float 2 has the ability to generate electricity.

[0019] In some embodiments of this application, such as Figures 4 to 6As shown, the drive device 3 includes a constant tension winding device and a flexible traction member 32. One end of the flexible traction member 32 is connected to the constant tension winding device, and the other end is connected to the swaying float 2. The constant tension winding device is configured to wind up the flexible traction member 32 to lift the swaying float 2, and to unwind the flexible traction member 32 to lower the swaying float 2. The constant tension winding device can maintain the tension stability of the flexible traction member 32, preventing the flexible traction member 32 from slackening and winding after lowering the swaying float 2, and ensuring that the lifting and lowering movements of the swaying float 2 are smooth and controllable.

[0020] Specifically, such as Figures 4 to 6 As shown, the constant tension winding device includes a motor 311, a winding wheel 312, a swing arm 313, and a counterweight pulley 314. The motor 311 is connected to the support frame 1 and is electrically connected to the control system. The motor 311 is able to receive start / stop, forward / reverse rotation, and speed control commands from the control system. The winding wheel 312 is connected to the motor 311 and rotates synchronously with the motor 311. It is used to wind or unwind the flexible tension member 32. One end of the flexible tension member 32 is connected to the winding wheel 312, and the other end is wound around the counterweight pulley 314 and connected to the swaying float 2. One end of the swing arm 313 is hinged to the support frame 1, and the other end of the swing arm 313 is connected to the counterweight pulley 314. The swing arm 313 can... The free up-and-down swing allows the counterweight pulley 314 to press down on the flexible tension member 32, providing tension to the flexible tension member 32. After the drive motor 311 drives the winding wheel 312 to lower the swaying float 2, the swaying float 2 will be subjected to an upward pulling force applied by the flexible tension member 32. The magnitude of this pulling force depends on the weight of the counterweight pulley 314. During the installation of the swaying float type wave energy power generation device of this application, by adjusting the weight of the counterweight pulley 314, the draft of the swaying float 2 can be adjusted, thereby adjusting the draft position of the swaying float 2 to the optimal power generation position that matches the wave motion, allowing the swaying float 2 to capture wave energy more fully, reducing energy loss, and thus improving the power generation efficiency of the entire wave energy power generation device.

[0021] The counterweight pulley 314 is equipped with a connecting structure, which is configured to allow for the detachable connection of counterweight components to the counterweight pulley 314. Specifically, this connecting structure can adopt a fastening connection or a pin connection. During the installation phase of the helical float-type wave energy generation device, by adjusting the counterweight components, the helical float 2 can be adjusted to the target draft depth, ensuring that the helical float 2 is in the optimal state for capturing wave energy.

[0022] In some embodiments of this application, such as Figure 5 , Figure 6As shown, the swaying float type wave energy generation device includes a first limiting member 41, which is connected to the support frame 1. Lifting the swaying float 2 can stop the first limiting member 41 and the swing arm 313, thus preventing the swing arm 313 from swinging upward. The first limiting member 41 can limit the maximum upward swing angle of the swing arm 313, preventing the upward swing of the swing arm 313 from going out of control. When it is necessary to move the swaying float 2 to a non-working position in strong wave conditions, during the process of the winding wheel 312 winding the flexible traction member 32, the swing arm 313 will first be pushed up to the position stopped by the first limiting member 41. After that, during the process of the winding wheel 312 winding the flexible traction member 32, the swing arm 313 will no longer swing. The winding length of the winding wheel 312 on the flexible traction member 32 is entirely converted into the upward displacement of the swaying float 2. After the swaying float 2 is lifted to the non-working position, the winding wheel 312 is locked, and the swaying float 2 remains in the non-working position.

[0023] In some embodiments of this application, the helical float-type wave energy generation device further includes a second limiting member 42, which is connected to the support frame 1 and located below the first limiting member 41. A portion of the swing arm 313 is located between the first limiting member 41 and the second limiting member 42. The second limiting member 42 can limit the downward swing limit of the swing arm 313.

[0024] In some embodiments of this application, such as Figure 5 , Figure 6 As shown, the support frame 1 includes a buoyancy frame 11 and a mounting frame 12. The buoyancy frame 11 is anchored to the seabed. The mounting frame 12 includes a first column, a second column, and a third column 123. The first column, the second column, and the third column 123 are all fixed to the buoyancy frame 11. The first column, the second column, and the third column 123 are arranged in a triangular structure, and the heave float 2 is located in the triangular structure. The heave float wave energy generation device also includes multiple sliding sleeves 5. Each of the first column, the second column, and the third column 123 is slidably fitted with a sliding sleeve 5 on its outer side. Each sliding sleeve 5 is connected to the heave float 2. The heave float 2 has a wave-facing surface 21, which is arranged facing one side of the triangular structure. That is, there is no guide column blocking the front of the wave-facing surface 21, thus ensuring that all incoming waves can impact the wave-facing surface 21.

[0025] To ensure the heave float 2 is securely fixed during operation, in some embodiments of this application, a locking rod is connected to the buoyancy frame 11. The locking rod is horizontally inserted through the buoyancy frame 11, and a hydraulic cylinder 6 for driving the locking rod to move is connected to the buoyancy frame 11. A stop block is fixed on the non-wave-facing side of the heave float 2. After the heave float 2 moves to the non-operating position, the hydraulic cylinder 6 drives part of the locking rod to move below the stop block, so that the locking rod can support the stop block, thereby supporting the heave float 2.

[0026] In some embodiments of this application, such as Figure 7As shown, the helical float-type wave energy power generation device includes a telescopic generator 311. The telescopic generator 311 includes a telescopic rod 62 and a power generation component. The power generation component can convert the telescopic rod 62's extension and retraction motion into electrical energy. The telescopic rod 62 is connected to the helical float 2. The up-and-down vibration of the helical float 2 under the action of waves can drive the telescopic rod 62 to extend and retract up and down, thereby realizing power generation. Specifically, the generator 311 includes a hydraulic cylinder 6, an oil tank, a hydraulic motor, and a generator 311. The telescopic rod 62 is set in the hydraulic cylinder 6, that is, the hydraulic cylinder 6 includes a cylinder body 61 and a telescopic rod 62. The cylinder body 61 is connected to the buoyancy frame 11 and has an oil inlet and an oil outlet. The telescopic rod 62 is connected to the helical float 2. The oil inlet is connected to the oil tank, and the oil outlet is connected to the oil inlet of the hydraulic motor. The oil outlet of the hydraulic motor is connected to the oil tank. The output shaft of the hydraulic motor is connected to the input shaft of the generator 311. When the oscillating float 2 is in the working position, the oscillating float drives the telescopic rod 62 to move upward, which can squeeze the oil in the hydraulic cylinder 6 out of the oil port in a high-pressure manner, and then flow into the hydraulic motor, and drive the hydraulic motor to rotate. The hydraulic motor drives the generator 311 to generate electricity. When the telescopic rod 62 moves downward, it can generate negative pressure at the oil inlet, so that the cylinder body 61 draws the hydraulic oil in the oil tank into the hydraulic cylinder 6.

[0027] In some embodiments of this application, such as Figures 4 to 6 , Figure 8 As shown, the buoyancy frame 11 includes a first top beam 111 and a second top beam 112 located at the top of the buoyancy frame 11. The first top beam 111 connects the top of the first column and the top of the second column, and the second top beam 112 connects the third column 123 and the first top beam 111, with the first top beam 111 and the second top beam 112 arranged perpendicularly. The triangular structure formed by the first column, the second column, and the third column 123 is an isosceles triangle, with the first top beam 111 arranged along the base of the isosceles triangle and the second top beam 112 arranged along the bisector of the vertex angle of the isosceles triangle. Multiple hydraulic cylinders 6 are provided, located between the second top beam 112 and... A first number of hydraulic cylinders 6 are connected to the first top beam 111 between the first columns, a first number of hydraulic cylinders 6 are connected to the first top beam 111 between the second top beam 112 and the second column, and a first number of hydraulic cylinders 6 are connected to the second top beam 112 between the first top beam 111 and the third column 123. The oil inlet of each hydraulic cylinder 6 is connected to the oil storage tank, and the oil outlet of each hydraulic cylinder 6 is connected to the oil inlet of the hydraulic motor. This arrangement can make the force on the first column, the second column and the third column 123 balanced, and at the same time make the heave float wave energy power generation device of this application have a high power generation capacity.

[0028] In some embodiments of this application, the buoyancy frame 11 further includes a support column 113, the lower end of which is fixed to the second top beam 112 or the first top beam 111, and the swing arm 313 is hinged to the support column 113.

[0029] In some embodiments of this application, such as Figure 4 As shown, a reversing pulley 33 is also rotatably connected to the support column 113. After the flexible traction member 32 is led out from the winding wheel 312, it passes through the counterweight pulley 314 and the reversing pulley 33 in sequence, and is finally connected to the upper end of the oscillating float.

[0030] In some embodiments of this application, such as Figure 4 , Figure 7 As shown, the oscillating float-type wave energy generation device also includes multiple sets of buffer sleeves. Each of the first, second, and second columns is fitted with a set of buffer sleeves. Each set of buffer sleeves includes a first buffer sleeve 71 and a second buffer sleeve 72, arranged vertically at intervals. A sliding sleeve 5 is arranged between the first buffer sleeve 71 and the second buffer sleeve 72. Multiple sets of buffer sleeves can reduce the impact of the oscillating float on the support frame 1 during operation.

[0031] In summary, the helical float wave energy generation device of this application includes a support frame 1, a helical float 2, a drive device 3, a monitoring component, and a control system. The support frame 1 is fixed to the sea surface. The helical float 2 is slidably connected to the support frame 1. The drive device 3 is connected to the support frame 1, and the output end of the drive device 3 is connected to the helical float 2. The monitoring component is configured to monitor the wave height of the sea waves. Both the monitoring component and the drive device 3 are electrically connected to the control system. Under normal sea conditions, when the monitoring component detects that the wave height is less than a set value, the control system controls the drive device 3 to drive the helical float 2 to move downwards, and enables the helical float 2 to move up and down under the action of waves, thereby realizing the power generation function. Under strong wave conditions, when the monitoring component detects that the wave height is greater than a set value, the control system controls the drive device 3 to lift the helical float 2 upwards and fix the helical float 2, avoiding the helical float 2 from being violently impacted by strong waves and extending the service life of the helical float wave energy generation device.

[0032] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A helical float-type wave energy generation device, characterized in that, include: Support frame (1), which is either floating or fixed on the sea surface; A swaying float (2) is slidably connected to the support frame (1) in the upper and lower parts. Drive device (3), the drive device (3) is connected to the support frame (1), and the output end of the drive device (3) is connected to the swaying float (2). A monitoring device configured to monitor the wave height of ocean waves; The control system is electrically connected to both the monitoring device and the driving device (3). When the monitoring device detects that the wave height is greater than the set value, the control system controls the driving device (3) to lift the swaying float (2) and fix it. When the monitoring device detects that the wave height is less than the set value, the control system controls the driving device (3) to drive the swaying float (2) to move down and enable the swaying float (2) to move up and down under the action of the waves.

2. The helical float-type wave energy generation device according to claim 1, characterized in that, The drive device (3) includes a constant tension winding device and a flexible traction member (32). One end of the flexible traction member (32) is connected to the constant tension winding device, and the other end of the flexible traction member (32) is connected to the swaying float (2). The constant tension winding device is configured to wind up the flexible traction member (32) to lift the swaying float (2), and the constant tension winding device is configured to unwind the flexible traction member (32) to lower the swaying float (2).

3. The helical float-type wave energy generation device according to claim 2, characterized in that, The constant tension winding device includes a motor (311), a winding wheel (312), a swing arm (313), and a counterweight pulley (314). The motor (311) is connected to the support frame (1), and the motor (311) is electrically connected to the control system; the winding wheel (312) is connected to the motor (311), one end of the swing arm (313) is hinged to the support frame (1), the other end of the swing arm (313) is connected to the counterweight pulley (314), one end of the flexible traction member (32) is connected to the winding wheel (312), and the other end is wound around the counterweight pulley (314) and connected to the swaying float (2); the counterweight pulley (314) is configured to provide a preset tension to the flexible traction member (32) so that the lowered swaying float (2) can maintain a set draft depth under the action of the preset tension.

4. The helical float-type wave energy generation device according to claim 3, characterized in that, The counterweight pulley (314) is provided with a connection structure, which is configured to allow for the detachable connection of a counterweight to the counterweight pulley (314).

5. The helical float-type wave energy generation device according to claim 3, characterized in that, The heave float wave energy generation device includes a first limiting member (41), which is connected to the support frame (1). Lifting the heave float (2) can cause the first limiting member (41) to block the swing arm (313) so as to prevent the swing arm (313) from swinging upward.

6. The helical float-type wave energy generation device according to claim 5, characterized in that, The helical float wave energy generation device also includes a second limiting member (42), which is connected to the support frame (1) and located below the first limiting member (41). Part of the swing arm (313) is located between the first limiting member (41) and the second limiting member (42).

7. The helical float-type wave energy generation device according to claim 1, characterized in that, The support frame (1) includes a buoyancy frame (11) and a mounting frame (12). The buoyancy frame (11) is anchored to the seabed, and the mounting frame (12) includes a first column, a second column and a third column (123). The first column, the second column and the third column (123) are all fixed to the buoyancy frame (11). The first column, the second column and the third column (123) are arranged in a triangular structure, and the heave float (2) is located in the triangular structure. The heaving float type wave energy power generation device also includes multiple sliding sleeves (5), and each of the first column, the second column and the third column (123) is provided with a sliding sleeve (5) on its outer side, and each of the sliding sleeves (5) is connected to the heaving float (2). The heave float (2) has a wave-facing surface (21) that is arranged facing one side of the triangular structure.

8. The helical float-type wave energy generation device according to claim 7, characterized in that, The heave-float wave energy generator includes a hydraulic cylinder (6), an oil tank, a hydraulic motor, and a generator (311). The hydraulic cylinder (6) includes a cylinder body (61) and a telescopic rod (62). The cylinder body (61) is connected to the buoyancy frame (11). The cylinder body (61) has an oil inlet and an oil outlet. The telescopic rod (62) is connected to the heave-float (2). The oil inlet is connected to the oil tank. The oil outlet is connected to the oil inlet of the hydraulic motor. The oil outlet of the hydraulic motor is connected to the oil tank. The output shaft of the hydraulic motor is connected to the input shaft of the generator (311).

9. The helical float-type wave energy generation device according to claim 8, characterized in that, The buoyancy frame (11) includes a first top beam (111) and a second top beam (112) located at the top of the buoyancy frame (11). The first top beam (111) connects the top of the first column and the top of the second column, and the second top beam (112) connects the third column (123) and the first top beam (111). The first top beam (111) and the second top beam (112) are arranged vertically. The hydraulic cylinders (6) are provided in multiple ways. The first top beam (111) located between the second top beam (112) and the first column is connected to a first number of hydraulic cylinders (6). The first top beam (111) located between the second top beam (112) and the second column is connected to the first number of hydraulic cylinders (6). The second top beam (112) located between the first top beam (111) and the third column (123) is connected to the first number of hydraulic cylinders (6). The oil inlet of each hydraulic cylinder (6) is connected to the oil storage tank, and the oil outlet of each hydraulic cylinder (6) is connected to the oil inlet of the hydraulic motor.

10. The helical float-type wave energy generation device according to claim 7, characterized in that, The helical float wave energy generation device also includes multiple sets of buffer sleeves. Each of the first column, the second column and the third column (123) is fitted with a set of buffer sleeves. Each set of buffer sleeves includes a first buffer sleeve (71) and a second buffer sleeve (72). The first buffer sleeve (71) and the second buffer sleeve (72) are arranged vertically at intervals. The sliding sleeve (5) is arranged between the first buffer sleeve (71) and the second buffer sleeve (72).

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