Mechanical transmission system of vertical oscillation wave energy power generation device

Abstract

The invention provides a mechanical transmission system of a vertical oscillation wave energy power generation device, which is characterized in that a wave energy acquisition and conversion device is mounted at the offshore bottom, and is used for capturing wave energy through vertical movement of a floater, transmitting the wave energy through a mechanical mechanism in the device and converting the movement of the floater into rotary movement of the mechanical mechanism; periodic speed fluctuation of the mechanical mechanism is adjusted through the flywheel speed adjusting mechanism, mechanical energy is converted into electric energy through the generator, and wave energy with smooth power is collected and utilized. According to the device, a mechanical electric energy conversion mode is adopted, oil pollution is avoided, the underwater part is of a totally-closed structure, and green, efficient and reliable renewable energy utilization is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wave energy power generation, and in particular relates to a mechanical transmission system of a vertical oscillation wave energy power generation device. Background Art

[0002] The ocean contains a vast array of exploitable resources, including marine minerals, seawater chemicals, marine organisms, and marine power. Wave energy is one such marine power resource and a clean, renewable energy source. With the continuous development of ocean resources, wave energy harvesting devices, which harness the kinetic and potential energy contained in waves to generate electricity, have become a key research area in the exploration of renewable energy. However, the inherent motion characteristics of waves—strong periodic fluctuations and significant randomness—are key challenges in achieving efficient, reliable, and economical conversion of wave energy.

[0003] To achieve reliable conversion of wave energy, the present applicant disclosed in application number 2025107625948 a fixed offshore charging station based on wave-wind-solar three-in-one power generation. This charging station achieves the effect of wave energy collection through a wave-wind-solar integrated configuration. However, this mechanism adopts a single-stage rack and pinion transmission and a planetary gearbox transmission structure. During the wave energy conversion process, the power transmission stability is poor and the power conversion efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a mechanical transmission system for a vertical oscillation wave energy power generation device. This transmission system inputs power to a rack through a float structure, and drives eight first meshing gears through two racks to realize directional transmission. Every two first meshing gears drive one second meshing gear to form a two-input and one-output balanced transmission speed-increasing mechanism, which changes the speed of the one-input and four-output gear rack transmission mechanism to make it close to the rated speed of the generator, effectively realizing efficient and smooth operation of the wave energy power generation device.

[0005] In order to achieve the above-mentioned technical features, the purpose of the present invention is achieved as follows: a mechanical transmission system for a vertical oscillation wave energy power generation device, including a wave energy collection and conversion device, which is installed on the offshore bottom, captures wave energy through the vertical movement of a float, transmits and converts the movement of the float into rotational motion of the mechanical mechanism through the mechanical mechanism inside the device, adjusts the periodic speed fluctuations of the mechanical mechanism through a flywheel speed regulation mechanism, and converts mechanical energy into electrical energy through a generator, thereby realizing power-smooth wave energy collection and utilization.

[0006] Preferably, the wave energy collection and conversion device includes a seabed fixed base, which is vertically installed on the offshore bottom; the equipment installation platform is fixedly connected to the upper platform of the seabed fixed base through an upper guide rod and is installed inside the float; the float is connected to the spring damping vibration mechanism through an ear shaft; three groups of spring damping vibration mechanisms are installed in the pillars of the seabed fixed base; a one-input and four-output gear rack transmission mechanism is installed on the equipment installation platform, wherein the rack is installed on the bottom of the float; four mechanical transmission speed increase systems are installed on the equipment installation platform and are connected to the output shaft of the second meshing gear of the one-input and four-output gear rack transmission mechanism; four flywheel speed regulating mechanisms are connected to the output shafts of the four mechanical transmission speed increase systems; four generators are installed on the equipment installation platform, and the main shafts of the generators are connected to the output shafts of the flywheel speed regulating mechanisms to drive the main shafts of the generators to rotate.

[0007] Preferably, the seabed fixed base is a concrete structure, equipped with three sets of spring damping vibration mechanisms, and fixed to the offshore bottom.

[0008] Preferably, the equipment installation platform is connected to the seabed fixed base via an upper guide rod. The equipment installation platform is a rounded corner platform. Two holes for installing a one-input and four-output rack and pinion transmission mechanism are provided on the equipment installation platform. The one-input and four-output rack and pinion transmission mechanism, four sets of mechanical transmission speed increasing systems, four flywheel speed regulating mechanisms and four generators are placed on the equipment installation platform. The float has a guide groove at the top that passes through the upper guide rod. The upper guide rod and the linear bearing of the float upper guide rod form a sliding fit. The linear bearing of the guide rod is arranged inside the guide groove and fixedly connected to the two racks on the float base.

[0009] Preferably, the spring damping vibration mechanism consists of a spring guide rod, a spring, a damper, and a linear bearing. The spring guide rod is arranged inside a fixed base column on the seabed. The damper and spring are mounted on the spring guide rod. The outer surface of the float is slidably mounted on the spring guide rod through a connecting ear shaft and a linear bearing.

[0010] Preferably, the upper guide rod is a solid cylinder fixed at the center of the equipment installation platform and passes through the top guide groove of the float.

[0011] Preferably, the one-input and four-output rack and pinion transmission mechanism consists of two racks and eight first meshing gears, eight first meshing gear shafts, eight first meshing gear bearings, four second meshing gears, four second meshing gear shafts and four second meshing gear bearings, one rack is respectively meshed with the four first meshing gears on the left and right sides, every two first meshing gears are meshed with one second meshing gear, and the first output shaft is connected to the motion input shaft of the mechanical transmission speed increasing system through a coupling; The rack is fixedly connected to the bottom of the float and passes through the rack through-hole on the equipment mounting platform. The one-input and four-output rack and pinion transmission mechanism formed by the rack, the first meshing gear and the second meshing gear is placed in the box.

[0012] Preferably, the mechanical transmission speed-increasing system is composed of a motion input shaft, a first-stage cylindrical gear accelerator, a two-stage planetary gear accelerator, and a motion output shaft, and is installed on the equipment installation platform. The first output shaft of the one-input and four-output rack and pinion transmission mechanism is connected to the motion input shaft of the mechanical transmission speed-increasing system, and the speed of the first output shaft is transmitted to the flywheel speed regulating mechanism through the mechanical transmission speed-increasing system. Preferably, the flywheel speed regulating mechanism is a solid steel disc of equal thickness, and the rotor and shaft adopt an integrated structure. The speed of the motion output shaft of the mechanical transmission speed increasing system is transmitted to the main shaft of the generator through the flywheel speed regulating mechanism.

[0013] Preferably, the generator is a permanent magnet synchronous generator, which is installed on the equipment installation platform.

[0014] The present invention has the following beneficial effects: 1. The present invention collects wave energy by a float under the action of a spring-damped vibration system, and inputs it into a rack through the float structure. Two racks drive eight first meshing gears to achieve variable direction transmission. Every two first meshing gears drive one second meshing gear to form a two-input and one-output balanced transmission speed-increasing mechanism, effectively achieving efficient and stable operation of the wave energy power generation device.

[0015] 2. The present invention changes the rotation speed of the one-input and four-output rack and pinion transmission mechanism through a mechanical transmission speed-increasing system, making it close to the rated speed of the generator, thereby increasing the power of the generator and improving the power generation efficiency.

[0016] 3. Based on the strong periodicity of waves, the present invention adopts a flywheel speed regulating mechanism to uniformize the speed, thereby improving the working quality of the mechanical device and also improving the efficiency and life of the generator.

[0017] 4. The mechanical transmission system of the vertical oscillation wave energy power generation device of the present invention adopts a completely symmetrical structure, which balances the force of the entire system.

[0018] 5. The mechanical transmission system of the vertical oscillation wave energy power generation device of the present invention adopts a mechanical energy transmission mechanism, which improves the energy conversion efficiency and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] Figure 1 It is a three-dimensional perspective view of the mechanical transmission system of a vertical oscillation wave energy power generation device provided by the present invention.

[0021] Figure 2 It is a schematic diagram of the connection between the seabed fixed base and the device provided by the present invention.

[0022] Figure 3 It is a top view of the specific installation position of the equipment provided by the present invention.

[0023] Figure 4 This is a schematic diagram of a one-input and four-output rack and pinion transmission mechanism provided by the present invention.

[0024] Figure 5 It is a single-sided schematic diagram of the overall transmission system of the device provided by the present invention.

[0025] Figure 6 It is a simplified transmission diagram of the overall transmission system of the device provided by the present invention.

[0026] Figure 7 This is the energy transfer flow chart of the power generation device provided by the present invention.

[0027] In the figure: 1. Seabed fixed base, 2. Equipment installation platform, 3. Float, 4. Spring damping vibration mechanism, 5. Upper guide rod, 6. One-input and four-output gear rack transmission mechanism, 7. Mechanical transmission speed increase system, 8. Flywheel speed regulation mechanism, 9. Generator, 10. Upper guide rod linear bearing, 11. Connecting ear shaft, 12. Spring guide rod, 13. Spring, 14. Damper, 15. Linear bearing, 16. Rack, 17. First meshing gear, 18. First meshing gear shaft, 19. First meshing gear bearing, 20. Second meshing gear, 21. Second meshing gear shaft, 22. Second meshing gear bearing, 23. First output shaft, 24. Motion input shaft, 25. One-stage cylindrical gear accelerator, 26. Two-stage planetary gear accelerator, 27. Motion output shaft. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and are not to be construed as limiting the present invention.

[0029] Example 1: See Figure 1-6The present invention provides a technical solution, a mechanical transmission system of a vertical oscillation wave energy power generation device, including a seabed fixed base 1, an equipment installation platform 2, a float 3, a spring damping vibration mechanism 4, an upper guide rod 5, a one-input and four-output gear rack transmission mechanism 6, a mechanical transmission speed increasing system 7, a flywheel speed regulating mechanism 8, a generator 9, a guide rod linear bearing 10, a connecting ear shaft 11, a spring guide rod 12, a spring 13, a damper 14, a linear bearing 15, a rack 16, a first meshing gear 17, a first meshing gear shaft 18, a first meshing gear bearing 19, a second meshing gear 20, a second meshing gear shaft 21, a second meshing gear bearing 22, a first output shaft 23, a motion input shaft 24, a first-stage cylindrical gear accelerator 25, a two-stage planetary gear accelerator 26, and a motion output shaft 27. The submarine fixed base 1 is vertically installed on the offshore bottom; the equipment installation platform 2 is fixedly connected to the upper platform of the submarine fixed base 1 through the upper guide rod 5 and is installed inside the float 3. The float 3 is connected to the spring damping vibration mechanism 4 through the connecting ear shaft 17. Three groups of spring damping vibration mechanisms 4 are installed in the pillars of the submarine fixed base 1. The upper guide rod 5 passes through the linear bearing 9 of the upper guide rod of the float. The one-input and four-output gear rack transmission mechanism 6 is installed on the equipment installation platform 2 and consists of a rack 16, a first meshing gear 17, a first meshing gear shaft 18, a first meshing gear bearing 19, a second meshing gear 20, a second meshing gear shaft 21 and a second meshing gear bearing 22. , two racks 16 are fixed to the bottom of the float 3 and pass through the rack holes. One rack 16 is respectively engaged with the four first meshing gears 17 on the left and right sides. Every two first meshing gears 17 are engaged with one second meshing gear 20. The first output shaft 23 is connected to the motion input shaft 24 of the mechanical transmission speed increase system 7 through a coupling. After passing through the first-stage cylindrical gear accelerator 25 and the two-stage planetary gear accelerator 26, the speed is transmitted from the motion output shaft 27 to the flywheel speed regulation mechanism 8. The generator 9 is installed on the equipment installation platform 2, and the main shaft of the generator 9 is connected to the flywheel rotor\shaft 28 of the flywheel speed regulation system through a coupling to drive the main shaft of the generator 9 to rotate.

[0030] Among them, by adopting the above-mentioned specific structure, the seabed fixed base 1 is installed on the bottom of the offshore area; the equipment installation platform 2 is connected to the upper platform of the seabed fixed base 1 through the upper guide rod 5; the float 3 cooperates with the seabed fixed base 1 through the spring damping vibration mechanism and the upper guide rod 5 to form vertical movement; the spring damping vibration mechanism 4 is installed in the pillar of the hydraulic structure fixed base to guide the float, thereby improving the reliability and survivability of the wave energy power generation device; the one-input and four-output gear rack transmission mechanism 6 is installed on the equipment installation platform 2, wherein the rack 16 is installed at the bottom of the float, follows the vertical movement of the float, and transmits the vertical movement of the float to the gear set; the mechanical transmission speed increase system 7 is connected to the first output shaft 23 of the one-input and four-output gear rack transmission mechanism 6 to further increase the transmission ratio; the flywheel speed regulation mechanism 8 is connected to the motion output shaft 27 of the mechanical transmission speed increase system 7 to balance the transmitted fluctuating speed; the generator 8 is installed on the equipment installation platform 2 and connected to the output shaft of the flywheel speed regulation mechanism 8. This device uses mechanical power conversion, is oil-free, and has a fully enclosed underwater structure, achieving green, efficient, and reliable renewable energy utilization.

[0031] Furthermore, the seabed fixed base 1 is a concrete structure, equipped with three sets of spring damping vibration mechanisms 4, and fixed to the offshore bottom. The hydraulic structure fixed base 1 plays a role of fixed support for the entire device.

[0032] Furthermore, the equipment installation platform 2 is connected to the seabed fixed base 1 through the upper guide rod 5. The equipment installation platform 2 is a rounded platform with two rack holes. A one-input and four-output gear rack transmission mechanism 6, four motion conversion modules 7, four flywheel speed regulation mechanisms 8, and four generators 9 are placed on the equipment installation platform 2. The equipment installation platform 2 provides an installation location for the working components of the power generation device and provides guarantee for its normal operation.

[0033] Furthermore, the float 3 has a guide groove for the upper guide rod 5 at the top, and a linear bearing 10 for the upper guide rod of the float is placed thereon. Three connecting ear shafts 11 are arranged on the side of the float 3 to connect with the spring damping vibration mechanism 4, thereby limiting the rollover, overturning and twisting of the float 3. Two racks 16 are fixedly connected to the bottom of the float 3, and the two racks 16 follow the float 3 to perform reciprocating motion in the vertical direction.

[0034] Furthermore, the spring damping vibration mechanism 4 is composed of a spring guide rod 12, a spring 13, a damper 14 and a linear bearing 15. The outer surface of the float 3 is connected to the fixed base 1 on the seabed through the ear shaft 11 on the outer surface of the float. The spring damping vibration mechanism 4 absorbs wave vibration and impact energy while storing and releasing energy, making the movement of the float more stable. The telescopic movement of the damper 14 is used to limit the extreme displacement of the float 3 and reduce the vibration of the wave energy power generation device.

[0035] Furthermore, the upper guide rod 5 is a solid cylinder, connecting the seabed fixed base 1 and the equipment installation platform 2, fixed at the center of the equipment installation platform 2, passing through the float guide rod linear bearing 10, and constraining the movement of the float 3.

[0036] Furthermore, the one-input and four-output rack-and-pinion transmission mechanism 6 consists of two racks 16 and eight first meshing gears 17, eight first meshing gear shafts 18, eight first meshing gear bearings 19, four second meshing gears 20, four second meshing gear shafts 21 and four second meshing gear bearings 22. One rack 16 is respectively engaged with the four first meshing gears 17 on the left and right sides, and every two first meshing gears 17 are engaged with one second meshing gear 20. The first output shaft 23 is connected to the motion input shaft 23 through a coupling; the rack 16 is fixedly connected to the bottom of the float 3 and passes through the rack through-hole on the equipment mounting platform 2. The one-input and four-output rack-and-pinion transmission mechanism 6 formed by the rack 16, the first meshing gear 17 and the second meshing gear 20 is placed in the box. The rack 23 moves in unison with the float 3 and converts the vertical motion of the float 3 into rotational motion through the gear. The rack-and-pinion transmission mechanism 6 is the energy transmission unit of the entire device.

[0037] Furthermore, the mechanical transmission speed increasing system 7 is composed of a motion input shaft 24, a first-stage cylindrical gear accelerator 25, a two-stage planetary gear accelerator 26 and a motion output shaft 27, and is installed on the equipment installation platform 2. The first output shaft 23 of the one-input and four-output gear rack transmission mechanism 6 is connected to the motion input shaft 25 of the mechanical transmission speed increasing system, and the speed of the first output shaft 23 is transmitted to the flywheel speed regulating mechanism 8 through the mechanical transmission speed increasing system 7.

[0038] Furthermore, the flywheel speed regulating mechanism 8 is a solid steel disc of equal thickness, and the rotor and shaft adopt an integrated structure. The speed of the motion output shaft 27 of the mechanical transmission speed increasing system is transmitted to the main shaft of the generator 9 through the flywheel speed regulating mechanism 8. The flywheel speed regulating mechanism 8 can adjust the periodic fluctuation speed output by the mechanical transmission speed increasing system 7.

[0039] Furthermore, the generator 9 is a permanent magnet synchronous generator, which is installed on the equipment installation platform 2. The permanent magnet synchronous generator has the advantages of small size, low loss, and high efficiency.

[0040] Example 2: See Figure 7 The present invention provides a technical solution, a method for transmitting energy in a mechanical transmission system of a vertical oscillation wave energy power generation device: The seabed fixed base 1 is fixed to the bottom of the offshore area. The action of the wave fluctuation drives the float 3 to move vertically. The change of sea conditions causes the change of the amplitude and period of the movement of the float 3. The rack 16 is fixedly connected to the bottom of the float 3. The collected wave energy passes through the rack 16, converting the kinetic energy of the wave into mechanical energy of reciprocating linear motion in the power generation device. The one-input and four-output gear rack transmission mechanism 6 converts the reciprocating linear motion mechanical energy into rotational mechanical energy, changes the rotation speed through the mechanical transmission speed increase system 7, and adjusts the periodic speed fluctuation through the flywheel speed regulation mechanism 8, thereby driving the generator 9 to generate electricity and realize efficient and stable utilization of wave energy.

[0041] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A mechanical transmission system for a vertical oscillation wave energy power generation device, characterized in that: The invention comprises a wave energy collection and conversion device, which is installed at the bottom of the offshore sea, captures wave energy through the vertical movement of a float, transmits and converts the movement of the float into the rotational motion of the mechanical mechanism through the mechanical mechanism inside the device, adjusts the periodic speed fluctuation of the mechanical mechanism through the flywheel speed regulation mechanism, and converts the mechanical energy into electrical energy through the generator, thereby realizing the power-smooth wave energy collection and utilization.

2. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 1, characterized in that: The wave energy collection and conversion device comprises a seabed fixed base (1), which is vertically installed on the bottom of the offshore sea; an equipment installation platform (2) is fixedly connected to the upper platform of the seabed fixed base (1) through an upper guide rod (5) and is installed inside a float (3); the float (3) is connected to a spring damping vibration mechanism (4) through an ear shaft; three sets of spring damping vibration mechanisms (4) are installed in the pillars of the seabed fixed base (1); a one-input and four-output gear rack transmission mechanism (6) is installed on the equipment installation platform (2), wherein the rack is installed at the bottom of the float (3); four mechanical transmission speed increasing systems (7) are installed on the equipment installation platform (2) and connected to the output shaft of the second meshing gear of the one-input and four-output gear rack transmission mechanism (6); four flywheel speed regulating mechanisms (8) are connected to the output shafts of the four mechanical transmission speed increasing systems (7); four generators (8) are installed on the equipment installation platform (2), and the main shafts of the generators (9) are connected to the output shafts of the flywheel speed regulating mechanisms (8) to drive the main shafts of the generators (9) to rotate.

3. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 2, characterized in that: The seabed fixed base (1) is a concrete structure, is equipped with three sets of spring damping vibration mechanisms (4), and is fixed to the offshore bottom.

4. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 2, characterized in that: The equipment installation platform (2) is connected to the seabed fixed base (1) via an upper guide rod (5). The equipment installation platform (2) is a rounded platform. Two holes for installing a one-input and four-output rack and pinion transmission mechanism (6) are provided on the equipment installation platform (2). The one-input and four-output rack and pinion transmission mechanism (6), four sets of mechanical transmission speed increasing systems (7), four flywheel speed regulating mechanisms (8) and four generators (9) are placed on the equipment installation platform (2); The float (3) has a guide groove at the top thereof which passes through the upper guide rod (5). The upper guide rod (5) and the float upper guide rod linear bearing (10) form a sliding fit. The guide rod linear bearing is arranged inside the guide groove and fixedly connected to two racks at the base of the float (3).

5. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 2, characterized in that: The spring damping vibration mechanism (4) is composed of a spring guide rod (12), a spring (13), a damper (14), and a linear bearing (15). The spring guide rod (12) is arranged inside a column of a fixed base (6) on the seabed. The damper (14) and the spring (13) are mounted on the spring guide rod (12). The outer surface of the float (3) is slidably mounted on the spring guide rod (12) through a connecting ear shaft (11) and a linear bearing (15).

6. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 4, characterized in that: The upper guide rod (5) is a solid cylinder fixed at the center of the equipment installation platform (2) and passes through the top guide groove of the float (3).

7. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 4, characterized in that: The one-input and four-output rack and pinion transmission mechanism (6) is composed of two racks (16) and eight first meshing gears (17), eight first meshing gear shafts (18), eight first meshing gear bearings (19), four second meshing gears (20), four second meshing gear shafts (21) and four second meshing gear bearings (22), one rack (16) is respectively meshed with the four first meshing gears (17) on the left and right sides, and every two first meshing gears (17) are meshed with one second meshing gear (20), and the first output shaft (23) is connected to the motion input shaft (24) of the mechanical transmission speed increasing system (7) through a coupling; The rack (16) is fixedly connected to the bottom of the float (3) and passes through the rack through-hole on the equipment mounting platform (2). The one-input and four-output rack and pinion transmission mechanism (6) formed by the rack (16), the first meshing gear (17) and the second meshing gear (20) is placed in the box.

8. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 7, characterized in that: The mechanical transmission speed increasing system (7) is composed of a motion input shaft (24), a first-stage cylindrical gear accelerator (25), a two-stage planetary gear accelerator (26) and a motion output shaft (27), and is installed on the equipment installation platform (2). The first output shaft (23) of the one-input and four-output rack and pinion transmission mechanism (6) is connected to the motion input shaft (24) of the mechanical transmission speed increasing system (7), and the speed of the first output shaft (23) is transmitted to the flywheel speed regulating mechanism (8) through the mechanical transmission speed increasing system (7).

9. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 8, characterized in that: The flywheel speed regulating mechanism (8) is a solid steel disc of equal thickness, and the rotor and shaft adopt an integrated structure. The speed of the motion output shaft (27) of the mechanical transmission speed increasing system is transmitted to the main shaft of the generator (9) through the flywheel speed regulating mechanism (8).

10. The mechanical transmission system of a vertical oscillation wave energy power generation device according to claim 4, characterized in that: The generator (9) is a permanent magnet synchronous generator and is installed on the equipment installation platform (2).

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