Series double-rocker arm four-floater wave energy power generation device and installation method thereof

Abstract

The application is a kind of series double-rocker-arm four-floater wave energy power generation device and its installation method, which comprises two sets of conversion modules, a set of variable speed power generation module and a fixing frame. The conversion module comprises a floater, a double-rocker-arm, a transmission box; the double-rocker-arm comprises a rack, a long rocker, a connecting rod, a short rocker, a clamp group, a hinged shaft assembly, a locking bolt group; the transmission box comprises an inner gear ring, a reversing gear, a one-way clutch gear, a gear ring bearing, a gear ring seal, a cover end plate, a double-end bolt assembly, a transmission shaft bearing, a reversing shaft, an output shaft, a transparent cover end plate, a transparent cover seal, a spacer group, a jackscrew assembly; the variable speed power generation module comprises a coupling, an intermediate shaft, a transmission, a flywheel and a generator; there is also a special installation method; the long rocker rotating shaft of the floater is close to the static sea surface, the floater moves up and down to work and generate electricity with double stroke, the device is compact, safe, efficient and widely used, and is especially suitable for the demand of small and medium-sized wave energy power generation device.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy power generation, and in particular to a wave energy power generation device with four buoys and double rockers in series and a method for installing the device. Background Art

[0002] Currently, most wave energy power generation devices on the market are of the oscillating water column type, pendulum type, and oscillating float type. Due to the high conversion efficiency of gear transmission and its simplicity and reliability, they have been widely used. Oscillating float wave energy power generation devices based on gear transmission mechanisms can be further subdivided into gear rack vertical oscillation wave energy conversion devices and rocker swing wave energy power generation devices. Rocker swing wave energy power generation devices use floats on the water surface to move up and down with the waves, absorbing the energy of the up and down movement of the waves. Then, through an energy conversion mechanism connected to the rocker arm (including mechanical transmission mechanism, hydraulic transmission mechanism, etc.), this converts the wave energy into rotational mechanical energy. However, current rocker swing wave energy power generation devices, especially the mechanical transmission method, still have some problems and need further improvement and perfection.

[0003] Patent CN118934413A discloses an offshore wave energy power generation device, including an offshore platform, an energy conversion mechanism, including a generator provided on the offshore platform, a gear set provided on the generator, and a drive shaft provided on the gear set; a rotating mechanism, including a housing provided on the offshore platform, and a rotating wheel provided in the housing, wherein a coil spring is provided in the rotating wheel. After the coil spring is used to connect the drive shaft and the rotating wheel, when the rotating wheel rotates, the starting process of the generator slows down. When the rotating wheel rotates intermittently, it can have a certain buffering capacity, and the coil spring gradually releases the force and energy, so that the rotation of the generator lasts longer. However, the above-mentioned offshore wave energy power generation device still has the following major defects and problems:

[0004] 1. The movement of the floating barrel will push the one-way push arm to perform a rotational motion that alternates between forward and reverse rotation. The rotating wheel can only rotate in one direction due to the limitation of the one-way locking part. During the rotation process, the one-way push arm can only push the rotating wheel in one direction, that is, the movement generated by the waves can only intermittently push the rotating wheel to rotate in one direction. Therefore, the above-mentioned offshore wave energy power generation device can only capture the energy generated in a single stroke of the one-way push arm's forward and reverse rotation. As a result, a lot of captured energy is lost, and when the wave height on the sea surface is low, the coil spring is slightly compressed, making it difficult to drive or even impossible to drive the gear set and generator, causing the generator to turn and stop intermittently, thereby shortening the service life of the generator and low power generation efficiency.

[0005] 2. Due to the limitation of the one-way locking member, the rotating wheel can only rotate in one direction, and its operating speed fluctuates greatly. In addition, the compression absorption and extension release of the coil spring cannot achieve the effect of smoothing the rotation of the generator rotor. It can only play a buffering role, but cannot play a role in speed balancing. As a result, it is impossible to ensure that the speed unevenness coefficient of the generator main shaft is within the allowable value range specified in the national standard GB / T 755. As a result, the generator cannot generate electricity normally, which seriously affects the power generation efficiency.

[0006] 3. The overall structure of the above-mentioned offshore wave energy power generation device is relatively complex, especially the one-way locking mechanism of the coil spring and the rotating wheel, which requires high installation precision. The manufacturing, installation, and subsequent disassembly and maintenance of the device are quite difficult.

[0007] 4. Since the height of the offshore platform is relatively high above the still sea level, a large angle is formed between the theoretical rocker line (the line connecting the center of mass of the float and the center of rocker swing) and the sea level. This angle greatly reduces the efficiency of the float in capturing wave energy under wave excitation, thereby affecting the power generation efficiency.

[0008] 5. In the above-mentioned offshore wave energy power generation device, one float can only drive one set of variable speed power generation modules independently, and it is not possible to realize that multiple floats drive one set of variable speed power generation modules. Its wave energy capture and overall power generation efficiency are low. Summary of the Invention

[0009] The purpose of the present invention is to provide a series double rocker arm four-float wave energy power generation device and its installation method and installation method to address the deficiencies of the existing technology, so as to solve the above-mentioned problems existing in the wave energy power generation device in the above-mentioned prior art.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A wave energy power generation device with four floats and a double rocker arm in series and an installation method thereof, comprising two sets of conversion modules and one set of variable speed power generation modules, all of which are fixedly arranged on a fixed frame; the conversion modules comprise two floats, two transmission boxes, and two double rocker arms, one end of the double rocker arm being connected to the float and the other end being connected to the transmission box, the two transmission boxes in the conversion modules being connected in series and synchronously rotating via an output shaft; the variable speed power generation module comprises a coupling, an intermediate shaft, a transmission, a flywheel, and a generator; the output shaft of one set of conversion modules is connected to the low-speed shaft of the transmission via a coupling, the output shaft of the other set of conversion modules is connected to the low-speed shaft of the transmission via an intermediate shaft and couplings at both ends of the intermediate shaft, the high-speed shaft of the transmission is connected to the generator, and a flywheel is mounted on the high-speed shaft.

[0012] Further, the transmission case comprises a gear ring shaft system, an output shaft system, a reversing shaft system and a support system; the gear ring shaft system comprises a bi-directional rotating inner gear ring, a gear ring bearing, a gear ring seal; the output shaft system comprises an output shaft, a one-way clutch gear, a reversing gear, a transmission shaft bearing, a transparent cover seal, a spacer set; the reversing shaft system comprises a reversing shaft, a one-way clutch gear, a reversing gear, a transmission shaft bearing, a spacer set; the support system comprises a cover end plate, a transparent cover end plate, a top screw assembly, a double-headed bolt assembly; the cover end plate comprises a cover gear ring bearing seat, two cover bearing seats in the cover gear ring bearing seat, cover double-headed bolt holes outside the diameter of the cover gear ring bearing seat, cover top screw holes on the outside of the cover end plate corresponding to the cover bearing seats, cover foot holes at the bottom of the cover end plate; the transparent cover end plate comprises a transparent cover gear ring bearing seat, a blind hole bearing seat and a through hole bearing seat in the transparent cover gear ring bearing seat, an output shaft hole, transparent cover double-headed bolt holes outside the diameter of the transparent cover gear ring bearing seat, transparent cover top screw holes on the outside of the transparent cover end plate corresponding to the blind hole bearing seat, transparent cover foot holes at the bottom of the transparent cover end plate; the conversion module comprises an inner transmission case near the transmission and an outer transmission case away from the transmission; in the outer transmission case, the support system of the outer transmission case comprises one transparent cover end plate and one cover end plate, the gear ring shaft system, the output shaft system and the reversing shaft system are clamped and installed between the transparent cover end plate and the cover end plate, wherein the transparent cover gear ring bearing seat supporting the gear ring shaft system and the cover gear ring bearing seat, the blind hole bearing seat supporting the reversing shaft system and the cover bearing seat, the through hole bearing seat supporting the output shaft system and the cover bearing seat, and the double-headed bolt holes of the two end plates are coaxial with each other, the one-way clutch gears of the output shaft system and the reversing shaft system inside the transmission case are meshed with the inner teeth of the inner gear ring, and the reversing gears on the output shaft system and the reversing shaft system are externally meshed with each other; in the inner transmission case, the support system of the inner transmission case comprises two transparent cover end plates, the gear ring shaft system, the output shaft system and the reversing shaft system are clamped and installed between the two transparent cover end plates, wherein the two transparent cover gear ring bearing seats supporting the gear ring shaft system, the two blind hole bearing seats supporting the reversing shaft system, the two through hole bearing seats supporting the output shaft system and the double-headed bolt holes of the two end plates are coaxial with each other, the one-way clutch gears of the output shaft system and the reversing shaft system inside the transmission case are meshed with the inner teeth of the inner gear ring, and the reversing gears on the output shaft system and the reversing shaft system are externally meshed with each other.

[0013] Further, the top screw assembly comprises a top screw, a locking nut and a sealing pad sleeved on the top screw, and the top screw assembly is installed on the transparent cover top screw hole and the cover top screw hole of the corresponding transparent cover end plate and cover end plate.

[0014] Furthermore, the double rocker arm includes a frame, a long rocker, a connecting rod, a short rocker, a clamp group, a hinge shaft and a locking bolt group, one end of the long rocker is fixedly connected to the float, the other end of the long rocker is rotatably connected to the frame through a hinge shaft, the frame is fixedly connected to the bottom of the fixed frame, the lower end of the connecting rod is rotatably connected to the middle part of the long rocker through a hinge shaft, the upper end of the connecting rod is rotatably connected to one end of the short rocker through a hinge shaft, and the other end of the short rocker is fixedly connected to the inner gear ring through a clamp group; the clamp group includes a plurality of components that are tightly fitted and fixed to the inner gear ring. The connected clamp ring is fixedly connected to one end of the short rocker arm through a clamp bolt group and a clamp reinforcement plate; the hinge shaft is fixedly connected to the upper and lower ends of the connecting rod and the lower end of the frame rod through a locking bolt group, and the hinge shaft is provided with a bearing at the hinge center with the long rocker arm and the short rocker arm, and sealing rings are provided at both end surfaces of the bearing. The outer diameter of the bearing is fixedly installed with a bearing sleeve, and the bearing sleeves are fixedly arranged inside the long rocker arm and the short rocker arm respectively. The hinge shaft is installed on the long rocker arm and the short rocker arm respectively through a bearing cover plate and corresponding cover plate bolts.

[0015] Furthermore, the frame includes a frame rod, a rib plate, a frame bottom plate and a frame bolt group, the lower end of the frame rod is rotatably connected to the long rocker, the upper end of the frame rod is fixedly connected to the frame bottom plate through the rib plate, and the frame bottom plate is fixedly connected to the fixing frame through the frame bolt group.

[0016] Furthermore, the frame includes a frame rod, a rib plate, a frame bottom plate and a frame bolt group, the lower end of the frame rod is rotatably connected to the long rocker, the upper end of the frame rod is fixedly connected to the frame bottom plate through the rib plate, and the frame bottom plate is fixedly connected to the fixing frame through the frame bolt group.

[0017] A method for installing a series-connected double-rocker rocker arm four-float wave energy power generation device includes the following steps: first, defining the driving direction of the one-way clutch gear connected to the output shaft as the forward rotation direction, ensuring that only forward rotation of the one-way clutch gear can drive the output shaft to rotate forward, otherwise the output shaft will idle and slip; second, setting the driving direction of the one-way clutch gear connected to the reversing shaft as the reverse rotation direction, ensuring that only reverse rotation of the one-way clutch gear can drive the reversing shaft to rotate reversely, otherwise the output shaft will idle and slip; and installing the two one-way clutch gears on the output shaft and the reversing shaft in the transmission box in opposite driving directions.

[0018] Furthermore, the installation method of the series double rocker arm four-float wave energy power generation device is as follows: for a set of conversion modules at one end of the fixed frame: step 1: complete the assembly of the two transmission boxes according to the process requirements; step 2: complete the assembly of the two double rocker arms according to the process requirements; step 3: use the frame bolt group to install and position the two frames and the two transmission boxes on the fixed frame according to the process requirements, and use the clamp group to respectively install one end of the two double rocker arms and the corresponding transmission boxes according to the process requirements; step 4: install the two floats on the corresponding double rocker arms according to the process requirements; for A set of conversion modules at the other end of the fixed frame: repeat the above steps 1 to 4, and note that the driving directions of the output shafts at both ends of the fixed frame are the same; Step 5: Install the transmission, flywheel and generator on the fixed frame in sequence and according to the process requirements; Step 6: Use the coupling to install the output shaft of one set of conversion modules and the transmission in accordance with the process requirements, and use the intermediate shaft and coupling to install the output shaft of the other set of conversion modules and the transmission in accordance with the process requirements; Step 7: Use the floating frame connection hole on the fixed frame to install and position the wave energy power generation device as a whole on the offshore floating platform or other offshore power generation structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] First, the four transmission boxes are connected in series in pairs. Based on the double-stroke work of the four floats, an average of 8 pulsating output torque superposition work is achieved within one wave cycle. Compared with the wave energy power generation device with a single float and double-stroke work, the output rotation speed fluctuation value is reduced by nearly 80%, which significantly improves the power generation efficiency.

[0021] Second, the typical double-rocker mechanism in mechanics is applied to the rocker-type wave energy power generation device, which solves the problem of the rocker swing center being too high, and makes the theoretical rocker line (the line connecting the center of mass of the float and the rocker swing center) basically parallel to the still sea level, so that the float can capture wave energy to the maximum extent.

[0022] Third, the transmission box adopts a one-cylinder, two-shaft, four-gear internal meshing structural design with a differential overrunning function; the power synthesis of multiple floats is superimposed on a set of variable-speed power generation modules, realizing the double-stroke work of the rocker arm swinging up and down. Compared with the open external meshing transmission box, the transmission efficiency is increased from 70% to more than 90%. Combined with the flywheel energy storage balancing effect, the generator speed can reach within the national standard allowable value range.

[0023] Fourth, the generator boasts a compact structure, high transmission torque, excellent overall rigidity, and seals with lubrication. Combined with specialized installation methods, it is simple to manufacture, operate, and maintain. This design is well-suited for small and medium-sized wave power generation installations, particularly those located on platforms where the center of the boom swing is high above the still sea level. This provides an important foundation for the construction of wave power generation installations on ships, vessels, and higher platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a front view and an axonometric view of the transmission of the present invention;

[0026] Figure 3 The front view and top view of the double rocker arm of the present invention;

[0027] Figure 4 for Figure 3 Middle CC section view;

[0028] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0029] Figure 6 for Figure 3 A partial enlarged view of point B in the middle;

[0030] Figure 7 It is a structural schematic diagram of the clamp assembly in the present invention;

[0031] Figure 8 It is a structural diagram of the transmission box of the present invention and a partial enlarged view of point A;

[0032] Figure 9 is a cross-sectional view of the transmission case of the present invention;

[0033] Figure 10 The front view and BB cross-sectional view of the end plate of the cover in the present invention;

[0034] Figure 11 It is a front view and a partial cross-sectional view of the CC portion of the transparent cover end plate in the present invention;

[0035] Figure 12 for Figure 11 Axonometric view of a partial section at the middle CC;

[0036] Figure 13 Schematic diagram of the structure of the inner gear ring in the present invention;

[0037] Figure 14 (a) is a partial cross-sectional schematic diagram of the one-way clutch gear in the present invention;

[0038] Figure 14 (b) is a schematic structural diagram of the one-way clutch gear in the present invention;

[0039] Figure 14 (c) is a schematic diagram of the gear symbol of the one-way clutch gear in the present invention;

[0040] Figure 15 It is the transmission principle diagram of the transmission box in the present invention;

[0041] Figure 16 It is a structural schematic diagram of the fixing frame in the present invention.

[0042] Wherein, the accompanying drawings are marked as follows:

[0043] 1. Float; 2. Double rocker arm; 2.1. Frame; 2.1.1. Frame rod; 2.1.2. Rib plate; 2.1.3. Frame base plate; 2.1.4. Frame bolt assembly; 2.2. Long rocker; 2.3. Connecting rod; 2.4. Short rocker; 2.5. Clamp assembly; 2.5.1. Clamp ring; 2.5.2. Clamp bolt assembly; 2.5.3. Clamp reinforcement plate; 2.6. Articulated shaft; 2.6.1. Bearing cover plate; 2.6.2 , cover bolts; 2.6.3, bearing sleeve; 2.6.4, sealing ring; 2.6.5, bearing; 2.7, locking bolt assembly; 3, transmission case; 3.1, internal gear ring; 3.2, reversing gear; 3.3, one-way clutch gear; 3.4, gear ring bearing; 3.5, gear ring seal; 3.6, blind cover end plate; 3.6.1, blind cover top screw hole; 3.6.2, blind cover foot hole; 3.6.3, blind cover stud bolt hole; 3.6.4 3.6.5. Bearing seat for blind cover ring gear; 3.7. Stud bolt assembly; 3.8. Drive shaft bearing; 3.9. Reversing shaft; 3.10. Output shaft; 3.11. End plate for transparent cover; 3.11.1. Top screw hole for transparent cover; 3.11.2. Bottom foot hole for transparent cover; 3.11.3. Stud bolt hole for transparent cover; 3.11.4. Output shaft hole; 3.11.5. Bearing seat for transparent cover ring gear; 3.11.6. Blind hole bearing seat; 3.11.7. Through-hole bearing seat; 3.12. Through-cover seal; 3.13. Spacer assembly; 3.14. Jackscrew assembly; 3.14.1. Jackscrew; 3.14.2. Locking nut; 3.14.3. Sealing gasket; 4. Coupling; 5. Transmission; 6. Flywheel; 7. Generator; 8. Fixing bracket; 8.1. Box frame connecting hole; 8.2. Floating frame connecting hole; 8.3. Transmission fixing hole; 8.4. Generator mounting hole; 9. Intermediate shaft. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0045] For easier understanding, see Figure 1 、 Figure 2 as well as Figure 16This embodiment provides a four-buoy wave energy power generation device with a series double rocker arm and a method for installing the same, comprising two sets of conversion modules and one set of variable-speed power generation modules. One set of conversion modules includes two floats 1, two double rocker arms 2, and two transmission boxes 3. The variable-speed power generation module includes a coupling 4, an intermediate shaft 9, a transmission 5, a flywheel 6, and a generator 7. The transmission box 3, the transmission 5, and the generator 7 are all fixedly mounted on a fixed frame 8. Specifically, the fixed frame 8 is provided with four vertical transmission fixing holes 8.3. Bolts are passed through the transmission fixing holes 8.3 to achieve relative fixation between the transmission 5 and the fixed frame 8. Bolts are passed through the six generator mounting holes 8.4 to achieve relative fixation between the generator 7 and the fixed frame 8. The fixed frame 8 is provided with multiple vertical buoy connection holes 8.2. Through the buoy connection holes 8.2, the fixed frame 8 can be installed on an offshore buoy or on a dedicated offshore fixed truss. The weight of float 1 is less than the buoyancy generated by its volume, so it floats on the sea surface. When a wave passes through the area where float 1 is placed, float 1 can follow the wave's movement. Specifically, float 1 rises from the sea surface on the wave's front side and descends to the sea surface on the wave's back side. That is, when float 1 is excited by the wave, it absorbs the wave energy and follows the wave's ups and downs. Each float 1 is connected to one end of a corresponding double-rocker arm 2, the other end of which is connected to a corresponding transmission box 3. The two transmission boxes 3 in a conversion module are arranged adjacent to each other and are connected in series via an output shaft 3.10 for transmission. Transmission 5 is a step-up transmission 5, comprising a low-speed shaft 5.1 at the input end and a high-speed shaft 5.2 at the output end. The output shaft 3.10 of transmission case 3 is connected to low-speed shaft 5.1 of transmission 5 via coupling 4. Transmission 5 is capable of stepping up the rotational motion of output shaft 3.10, increasing its speed to the required power generation speed. This speed is then transmitted to the main shaft of generator 7 via high-speed shaft 5.2 of transmission 5, thereby generating electricity. A flywheel 6 is installed between transmission 5 and generator 7. Its center hole is connected to both high-speed shaft 5.2 of transmission 5 and the main shaft of generator 7. Serving as an energy storage element, flywheel 6 balances the speed of generator 7's main shaft during the alternating up-and-down swinging of the double-rocker arm 2. This balances the rotational speed of generator 7's main shaft, further ensuring that the main shaft's rotational speed falls within the permissible range of the speed nonuniformity coefficient, ensuring that the variable-speed power generation module operates normally throughout the entire wave energy capture process. The two conversion modules each include an output shaft 3.10 for outputting unidirectional rotational motion. The two output shafts 3.10 in the two conversion modules rotate in the same direction and are coaxial. One output shaft 3.10 is connected to the low-speed shaft 5.1 of the transmission 5 via a coupling 4 to generate electricity, while the other output shaft 3.10 is connected to the low-speed shaft 5.1 of the transmission 5 via a coupling 4 and an intermediate shaft 9 to generate electricity.

[0046] As the float 1 rises and falls with the waves, the double rocker arm 2 performs a bidirectional rotational motion (also called swinging) with the inner gear ring 3.1 of the transmission box 3 as its axis, alternating between forward and reverse rotation (clockwise and counterclockwise). The transmission box 3 converts the bidirectional rotational motion transmitted by the double rocker arm 2 into a unidirectional rotational motion, that is, converting the up and down bidirectional power motion of the double rocker arm 2 into the unidirectional rotational power motion of the output shaft 3.10 of the transmission box 3. Because the four floats 1 are located in different positions, the amplitude, speed, phase angle, etc. of the up and down swings of the corresponding four double rocker arms 2 are inconsistent, resulting in different instantaneous rotational speeds of the four floats 1. Furthermore, because the two transmission boxes 3 in a set of conversion modules are connected in series via an output shaft 3.10 for transmission, the transmission box 3 with greater power in the set of conversion modules will transmit power to the output shaft 3.10. Since the two output shafts 3.10 connected to the transmission 5 in the two conversion modules rotate in the same direction and are coaxial, the output shaft 3.10 with a faster rotation speed in the two conversion modules will transmit power to the output shaft 3.10 with a slower rotation speed through the intermediate shaft 9. That is, among the four conversion boxes 3, the conversion box 3 with the largest power outputs power to the low-speed shaft 5.1 of the transmission 5 through the output shaft 3.10.

[0047] For easier understanding, see Figures 3 to 7 The double rocker arm 2 includes a frame 2.1, a long rocker 2.2, a connecting rod 2.3, a short rocker 2.4, a clamp assembly 2.5, a hinge shaft 2.6, and a locking bolt assembly 2.7. The left end of the long rocker 2.2 is fixedly connected to the float 1, and the right end of the long rocker 2.2 is fixedly connected to a hinge shaft 2.6 via a locking bolt assembly 2.7. The right end of the long rocker 2.2 is rotationally connected to the frame 2.1 via the hinge shaft 2.6. The frame 2.1 is fixedly connected to the bottom of the fixed frame 8. The upper and lower ends of the connecting rod 2.3 are fixedly connected to a hinge shaft 2.6 via a locking bolt assembly 2.7. The lower end of the connecting rod 2.3 is rotatably connected to the middle portion of the long rocker arm 2.2 via the hinge shaft 2.6. The upper end of the connecting rod 2.3 is rotatably connected to the left end of the short rocker arm 2.4 via the hinge shaft 2.6. The right end of the short rocker arm 2.4 is connected to a clamp assembly 2.5. The clamp assembly 2.5 fits tightly against the outer cylindrical surface of the inner gear ring 3.1 and is locked in place. The clamp assembly 2.5 secures the right end of the short rocker arm 2.4 to the inner gear ring 3.1. The distance between the upper and lower hinge shafts 2.6 at the connecting rod 2.3 is determined by the distance between the fixing frame 8 and the still sea surface (e.g. Figure 2 (As shown in the height of h in the middle), the hinge axis 2.6 between the long rocker 2.2 and the frame 2.1 is close to the still sea surface, so that the angle between the theoretical rocker arm force line (the line connecting the center of mass of the float and the swing center of the rocker directly fixing the float) and the still sea surface approaches zero degrees, effectively increasing the torque of the long rocker 2.2 and ensuring that the efficiency of the float 1 in capturing wave energy under wave excitation is at an optimal state.

[0048] For easier understanding, please refer toFigures 3 to 7 The frame 2.1 includes a frame rod 2.1.1, a rib plate 2.1.2, a frame base plate 2.1.3, and a frame bolt assembly 2.1.4. The lower end of the frame rod 2.1.4 is pivotally connected to the right end of the long rocker 2.2, and the upper end of the frame rod 2.1.4 is fixedly connected to the frame base plate 2.1.3. The triangular rib plate 2.1.2 is fixedly connected to both the frame rod 2.1.4 and the frame base plate 2.1.3. The rib plate 2.1.2 makes the connection between the frame rod 2.1.4 and the frame base plate 2.1.3 more stable and secure. The frame base plate 2.1.3 is fixedly connected to the fixing frame 8 via the frame bolt assembly 2.1.4. The hinge shaft 2.6 is fitted with bearings 2.6.5 at the hinge centers of the long rocker 2.2 and the short rocker 2.4. Seals 2.6.4 are located on either side of the bearing 2.6.5's axial axis. These seals prevent seawater or moisture from entering the bearing 2.6.5 through the gap between the rotating connections, thereby preventing corrosion damage to the bearing 2.6.5 and increasing its service life. Bearing sleeves 2.6.3 are mounted on the outer circumference of the bearing 2.6.5. These sleeves are fixedly mounted inside the long rocker 2.2 and short rocker 2.4, respectively. Specifically, the right end of the long rocker 2.2 is pivotally connected to the lower end of the frame rod 2.1.4 via bearing 2.6.5. The middle of the long rocker 2.2 is pivotally connected to the lower end of the connecting rod 2.3 via bearing 2.6.5. The left end of the short rocker 2.4 is pivotally connected to the upper end of the connecting rod 2.3 via bearing 2.6.5. The hinge shaft 2.6 is mounted on the long rocker 2.2 and the short rocker 2.4, respectively, via a bearing cover plate 2.6.1 and corresponding cover plate bolts 2.6.2. The clamp assembly 2.5 comprises a clamp ring 2.5.1, a clamp bolt assembly 2.5.2, and a clamp reinforcement plate 2.5.3. The clamp ring 2.5.1 fits tightly against and is fixedly connected to the outer cylindrical surface of the inner gear ring 3.1. The clamp ring 2.5.1 is fixedly connected to the right end of the short rocker 2.4 via a clamp bolt assembly 2.5.2 and a clamp reinforcement plate 2.5.3.

[0049] For easier understanding, see Figures 8 to 9 and Figures 13 to 15, the transmission case 3 includes a ring gear shaft system, an output shaft system, a reversing shaft system and a support system. The ring gear shaft system includes a bidirectionally rotatable inner ring gear 3.1, a ring gear bearing 3.4, and a ring gear seal 3.5. The output shaft system includes an output shaft 3.10, a one-way clutch gear 3.3, a reversing gear 3.2, a transmission shaft bearing 3.8, a transparent cover seal 3.12, and a spacer set 3.13. The reversing shaft system includes a reversing shaft 3.9, a one-way clutch gear 3.3, a reversing gear 3.2, a transmission shaft bearing 3.8, and a spacer set 3.13. The support system includes a blind cover end plate 3.6, a transparent cover end plate 3.11, a top screw assembly 3.14, and a stud bolt assembly 3.7. The blind cover end plate 3.6 includes a blind cover ring gear bearing seat 3.6.4 and two blind cover bearing seats 3.6.5 located inside the blind cover ring gear bearing seat 3.6.4. The blind cover stud bolt hole 3.6.3 is located outside the diameter of the blind cover gear ring bearing seat 3.6.4, the blind cover top screw hole 3.6.1 is located on the outside of the blind cover end plate 3.6 corresponding to the blind cover bearing seat 3.6.5, and the blind cover foot hole 3.6.2 is located at the bottom of the blind cover end plate 3.6. The transparent cover end plate 3.11 includes a transparent cover gear ring bearing seat 3.11.5, a blind hole bearing seat 3.11.6 and a through hole bearing seat 3.11.7 located inside the transparent cover gear ring bearing seat 3.11.5, an output shaft hole 3.11.4, a transparent cover stud bolt hole 3.11.3 is located outside the diameter of the transparent cover gear ring bearing seat 3.11.5, the transparent cover top screw hole 3.11.1 is located on the outside of the transparent cover end plate 3.11 corresponding to the blind hole bearing seat 3.11.6, and a transparent cover foot hole 3.11.2 is located at the bottom of the transparent cover end plate 3.11.

[0050] Specifically, the conversion module includes a transmission box 3 located on the outside and a transmission box 3 located on the inside. The inner transmission box 3 is located on the side close to the transmission 5, and the outer transmission box 3 is located on the side away from the transmission 5. Each transmission box 3 includes a cylindrical inner gear ring 3.1. The left and right end faces of the inner gear ring 3.1 of the outer transmission box 3 are rotatably connected to the transparent cover end plate 3.11 and the blind cover end plate 3.6 respectively. The inner gear ring 3.1 and the transparent cover end plates 3.11 and the blind cover end plates 3.6 connected on both sides of the inner gear ring 3.1 are jointly enclosed to form a box-type closed space through the gear ring bearings 3.4 and the gear ring seals 3.5 at both ends; the left and right end faces of the inner gear ring 3.1 of the inner transmission box 3 are rotatably connected to the two transparent cover end plates 3.11 respectively. The inner gear ring 3.1 and the two transparent cover end plates 3.11 connected on both sides of the inner gear ring 3.1 are jointly enclosed to form a box-type closed space through the gear ring bearings 3.4 and the gear ring seals 3.5 at both ends. The lower parts of the transparent cover end plate 3.11 and the blind cover end plate 3.6 are respectively provided with transparent cover foot holes 3.11.2 and blind cover foot holes 3.6.2, through the frame bolt group 2.1.4 respectively from top to bottom through the transparent cover foot holes 3.11.2, the box frame connecting holes 8.1 and the frame bottom plate 2.1.3, the blind cover foot holes 3.6.2, the box frame connecting holes 8.1 and the frame bottom plate 2.1.3, to achieve relative fixation between the transparent cover end plate 3.11 and the fixing frame 8 and the frame 2.1, and the blind cover end plate 3.6 and the fixing frame 8 and the frame 2.1, thereby achieving fixed installation of the outer transmission box 3 and the inner transmission box 3 on the fixing frame 8. The cover end plate 3.11 and the blind end plate 3.6 are provided with corresponding cover stud holes 3.11.3 and blind end stud holes 3.6.3. Four sets of stud assemblies 3.7 penetrate the cover stud holes 3.11.3 and blind end stud holes 3.6.3 on the outer side of the inner ring gear 3.1, respectively, to achieve relative fixation between the two cover end plates 3.11, or between one cover end plate 3.11 and one blind end plate 3.6. Inside the outer transmission case 3, one end of the inner ring gear 3.1 is rotationally connected to the cover end plate 3.11 via a ring gear bearing 3.4, and the other end of the inner ring gear 3.1 is rotationally connected to the blind end plate 3.6 via a ring gear bearing 3.4. Inside the inner transmission case 3, both ends of the inner ring gear 3.1 are rotationally connected to the cover end plate 3.11 via the ring gear bearing 3.4. A gear ring seal 3.5 is provided at the connection between the inner gear ring 3.1 and the gear ring bearing 3.4. The gear ring seal 3.5 can prevent seawater or water vapor from entering the transmission case 3 through the connection gap between the inner gear ring 3.1 and the transparent cover end plate 3.11 or the blind cover end plate 3.6, thereby preventing seawater or water vapor from corroding and damaging the mechanical transmission components inside the transmission case 3, thereby increasing their service life.Internal teeth are located in the middle of the inner cylindrical surface of the ring gear 3.1. These teeth mesh with two identical one-way clutch gears 3.3. One of these one-way clutch gears 3.3 is fixed to the output shaft 3.10, while the other is fixed to the reversing shaft 3.9. Inside the outer transmission case 3, one end of the output shaft 3.10 is rotationally connected to the transparent cover end plate 3.11 via a transmission shaft bearing 3.8. The output shaft then extends through an output shaft hole 3.11.4 in the transparent cover end plate 3.11 and into the inner transmission case 3, where it becomes transmission-connected there. The other end of the output shaft 3.10 is rotationally connected to the blind cover end plate 3.6 via a transmission shaft bearing 3.8. The reversing shaft 3.9 is rotationally connected to both the transparent cover end plate 3.11 and the blind cover end plate 3.6, respectively, via transmission shaft bearings 3.8. Inside the internal transmission case, one end of the output shaft 3.10 is rotationally connected to the transparent cover end plate 3.11 via a transmission shaft bearing 3.8. The output shaft then extends through an output shaft hole 3.11.4 in the transparent cover end plate 3.11 and connects to the low-speed shaft 5.1 of the transmission 5 via a coupling 4. The other end of the output shaft 3.10 is rotationally connected to the transparent cover end plate 3.11 via a transmission shaft bearing 3.8. Both ends of the reversing shaft 3.9 are rotationally connected to the two transparent cover end plates 3.11 via transmission shaft bearings 3.8. A transparent cover seal 3.12 is installed on one side of the transparent cover end plate 3.11 at the connection between the output shaft 3.10 and the transmission shaft bearing 3.8. This seal prevents seawater or moisture from entering the transmission case 3 through the gap between the output shaft 3.10 and the output shaft hole 3.11.4, thereby preventing corrosion damage to the mechanical transmission components within the transmission case 3 and extending their service life. Two identical reversing gears 3.2 are mounted within the inner ring gear 3.1. These reversing gears 3.2 are externally meshed and fixedly mounted on the output shaft 3.10 and reversing shaft 3.9, respectively. Two axially positioned spacer sleeves 3.13 are also fixedly mounted on the output shaft 3.10 and reversing shaft 3.9, respectively. These spacer sleeves 3.13 are located between the one-way clutch gear 3.3 and the transmission shaft bearing 3.8, and between the reversing gears 3.2 and the transmission shaft bearing 3.8, respectively, to provide axial positioning and isolation for the components.

[0051] The installation method for two identical one-way clutch gears 3.3, each meshing with the internal teeth of the ring gear 3.1, within a transmission case 3 is as follows: Step 1: Define the driving direction of the one-way clutch gear 3.3 connected to the output shaft 3.10 as forward rotation, ensuring that only forward rotation of the one-way clutch gear 3.3 drives the output shaft 3.10 in forward rotation; otherwise, the gear will idle. Step 2: Set the driving direction of the one-way clutch gear 3.3 connected to the reversing shaft 3.9 to reverse rotation, ensuring that only reverse rotation of the one-way clutch gear 3.3 drives the reversing shaft 3.9 in reverse rotation; otherwise, the gear will idle. Step 3: Install the two one-way clutch gears 3.3 on the output shaft 3.10 and reversing shaft 3.9, respectively, with opposite driving directions.

[0052] In this embodiment, the four floats 1 are each excited by the waves, absorbing wave energy and vibrating up and down. When the waves rise, buoyancy lifts the floats 1 to a certain height, giving them potential energy. Simultaneously, the floats 1 drive the double-arm rocker 2, causing it to swing upward and generate work. When the waves recede, the floats 1 descend due to their own gravity, releasing potential energy while simultaneously driving the double-arm rocker 2 downward and generating work through gravity. Two one-way clutch gears 3.3 within the transmission case 3 convert the bidirectional swinging rotation of the double-arm rocker 2 into unidirectional rotation of the output shaft 3.10, which has both one-way transmission and one-way overrunning capabilities. Thus, the up and down motion of the four floats 1 is transformed into the superimposed rotational motion of the four one-way output shafts 3.10 of the transmission case 3. This rotational power is then transmitted to the generator 7 via the transmission 5 and flywheel 6, completing the conversion of wave energy into electrical energy.

[0053] In this embodiment, the four floats 1 are spaced apart. The instantaneous motion amplitude, phase angle, and speed of each float 1 are different. Each float 1 also absorbs and releases wave kinetic energy and potential energy at different instants. The float 1 with greater energy bears a greater load (primarily the electromagnetic drag torque of the generator 7), resulting in faster energy consumption and a faster decrease in motion speed. The float 1 with less instantaneous kinetic energy, due to the smaller force applied, increases in speed, potentially exceeding the float 1 with greater energy at the previous moment. The energy of the four floats 1 is constantly alternating and outputting in a superimposed manner. The generator 7 is always primarily driven by the float 1 with the greatest instantaneous energy, maximizing the stability of the mechanical energy output to the generator 7 and improving the efficiency of converting mechanical energy into electrical energy. Because the flywheel 6 continuously stores and releases energy, the speed fluctuations of the rotational power input to the generator 7 are substantially eliminated, achieving fluctuation balance and enabling normal power generation.

[0054] In theory, the more floats 1 involved in the power superposition and alternating drive, the more stable the generator 7's rotational speed and the better the wave energy absorption and conversion. However, the choice of wave energy generation device consisting of a single float 1, two floats 1, four floats 1, or more floats 1 should be determined based on actual conditions. This embodiment, in which four floats 1 drive a set of variable-speed power generation modules, is structurally advanced and practical. This has been verified in actual sea trials and demonstrates a high cost-effectiveness, facilitating further unitization and arraying.

[0055] For easier understanding, see Figures 10 to 12 Annular, horizontally projecting ring-shaped bearing seats 3.11.5 and 3.6.4 are provided on the transparent cover end plate 3.11 and the blind cover end plate 3.6, respectively. In the outer transmission case 3, the transparent cover ring-shaped bearing seat 3.11.5 on the transparent cover end plate 3.11 and the blind cover ring-shaped bearing seat 3.6.4 on the blind cover end plate 3.6 are coaxial and have the same outer diameter. In the inner transmission case 3, the transparent cover ring-shaped bearing seats 3.11.5 on both transparent cover end plates 3.11 are coaxial and have the same outer diameter, meaning that the two transparent cover end plates 3.11 of the inner transmission case 3 are structurally symmetrical. Ring-shaped bearings 3.4 are sleeved and connected to the outer walls of the transparent cover ring-shaped bearing seat 3.11.5 and the blind cover ring-shaped bearing seat 3.6.4, respectively. In the outer transmission case 3, the inner wall ends on both sides of the inner gear ring 3.1 are rotationally connected to the transparent cover gear ring bearing seat 3.11.5 and the blind cover gear ring bearing seat 3.6.4 respectively through the gear ring bearing 3.4, that is, the inner wall ends on both sides of the inner gear ring 3.1 are rotationally connected to the transparent cover end plate 3.11 and the blind cover end plate 3.6 respectively through the gear ring bearing 3.4; in the inner transmission case 3, the inner wall ends on both sides of the inner gear ring 3.1 are rotationally connected to the two transparent cover gear ring bearing seats 3.11.5 respectively through the gear ring bearing 3.4, that is, the inner wall ends on both sides of the inner gear ring 3.1 are rotationally connected to the two transparent cover end plates 3.11 respectively through the gear ring bearing 3.4.

[0056] For easier understanding, see Figures 10 to 12The through-cover end plate 3.11 is provided with a ring-shaped blind hole bearing seat 3.11.6 and a ring-shaped through hole bearing seat 3.11.7 in parallel in the horizontal direction, the output shaft hole 3.11.4 on the through-cover end plate 3.11 is arranged in the middle of the through hole bearing seat 3.11.7, and the blind hole bearing seat 3.11.6 and the through hole bearing seat 3.11.7 are both located in the middle annular area of the through-cover ring gear bearing seat 3.11.5. The cover end plate 3.6 is provided with two ring-shaped cover bearing seats 3.6.5 in parallel in the horizontal direction, and the two cover bearing seats 3.6.5 are both located in the middle annular area of the cover ring gear bearing seat 3.6.4. In the outer transmission box 3, the blind hole bearing seat 3.11.6 and the through hole bearing seat 3.11.7 on the through-cover end plate 3.11 are coaxial with one of the cover bearing seats 3.6.5 on the cover end plate 3.6, and the inner diameters of the blind hole bearing seat 3.11.6, the through hole bearing seat 3.11.7 and the cover bearing seat 3.6.5 are the same, and the inner sides of the blind hole bearing seat 3.11.6, the through hole bearing seat 3.11.7 and the two cover bearing seats 3.6.5 are respectively embedded with the transmission shaft bearing 3.8. In the inner transmission box 3, the two blind hole bearing seats 3.11.6 on the two through-cover end plates 3.11 are coaxial, the two through hole bearing seats 3.11.7 are also coaxial, and the inner diameters of the two blind hole bearing seats 3.11.6 and the two through hole bearing seats 3.11.7 are the same, and the inner sides of the two blind hole bearing seats 3.11.6 and the two through hole bearing seats 3.11.7 are respectively embedded with the transmission shaft bearing 3.8.

[0057] For ease of understanding, please refer to Figures 10 to 12In the outer transmission case 3, the two side ends of the reversing shaft 3.9 are respectively connected to the blind hole bearing seat 3.11.6 and a blind cover bearing seat 3.6.5 through the transmission shaft bearing 3.8, that is, the two side ends of the reversing shaft 3.9 are respectively connected to the transparent cover end plate 3.11 and the blind cover end plate 3.6 through the transmission shaft bearing 3.8 inside the inner gear ring 3.1, one side end of the output shaft 3.10 is connected to the other blind cover bearing seat 3.6.5 through the transmission shaft bearing 3.8, and the other side end of the output shaft 3.10 is connected to the through hole bearing seat 3.11.7 through the transmission shaft bearing 3.8, and then extends through the output shaft hole 3.11.4 and extends into the inner transmission case 3, that is, the two side ends of the output shaft 3.10 are respectively connected to the transparent cover end plate 3.11 and the blind cover end plate 3.6 through the transmission shaft bearing 3.8 inside the inner gear ring 3.1. Within the inner transmission case 3, the two side ends of the reversing shaft 3.9 are rotationally connected to the two blind hole bearing seats 3.11.6 via the transmission shaft bearings 3.8. That is, the two side ends of the reversing shaft 3.9 are rotationally connected to the two transparent cover end plates 3.11 inside the inner ring gear 3.1 via the transmission shaft bearings 3.8. One end of the output shaft 3.10 is rotationally connected to the through hole bearing seat 3.11.7 via the transmission shaft bearing 3.8, then extends through the output shaft hole 3.11.4 and extends into the outer transmission case 3. The other side end of the output shaft 3.10 is rotationally connected to the through hole bearing seat 3.11.7 via the transmission shaft bearing 3.8, then extends through the output shaft hole 3.11.4 and extends into the outer transmission case 3.

[0058] For easier understanding, see Figures 8 to 12 A pair of jackscrew assemblies 3.14 are mounted on the transparent cover end plate 3.11, and two pairs of jackscrew assemblies 3.14 are mounted on the blind cover end plate 3.6. These jackscrew assemblies 3.14 are used to prevent the transmission shaft bearing 3.8 from shifting position during use. The jackscrew assemblies 3.14 include a jackscrew 3.14.1, a locking nut 3.14.2 movably mounted on the jackscrew 3.14.1, and a sealing gasket 3.14.3. Corresponding jackscrew holes 3.6.1 for the blind cover and 3.11.1 for the transparent cover are provided on the transparent cover end plate 3.11 and the blind cover end plate 3.6, respectively. Specifically, each blind hole of the transparent cover end plate 3.11 and the blind cover end plate 3.6 in the transmission box 3 (the rotation connection between the reversing shaft 3.9 and the blind hole bearing seat 3.11.6, the rotation connection between the reversing shaft 3.9 and the blind cover bearing seat 3.6.5, and the rotation connection between the output shaft 3.10 and the blind cover bearing seat 3.6.5) is equipped with a pair of top screw assemblies 3.14.

[0059] The installation method of the series double rocker arm four-float wave energy power generation device is as follows: for a set of conversion modules at one end of the fixed frame: Step 1: complete the assembly of the transmission box 3 according to the process requirements; Step 2: complete the assembly of the double rocker arm 2 according to the process requirements; Step 3: use the frame bolt group 2.1.4 to install and position the two frames 2.1 and the two transmission boxes 3 on the fixed frame 8 according to the process requirements, and use the clamp bolts 2.5.1 to respectively install one end of the two double rocker arms 2 and the corresponding transmission box 3 according to the process requirements; Step 4: install the two floats 1 on the corresponding double rocker arms 2 according to the process requirements; for the other end of the fixed frame A set of conversion modules at the end: repeat the above steps 1 to 4, and note that the driving directions of the output shafts 3.10 at both ends are the same; Step 5: Install the transmission 5, flywheel 6 and generator 7 on the fixed frame 8 in the order and process requirements; Step 6: Install the output shaft 3.10 in one set of conversion modules and the transmission 5 in accordance with the process requirements through the coupling 4, and install the output shaft 3.10 in the other set of conversion modules and the transmission 5 in accordance with the process requirements through the intermediate shaft 9 and the coupling 4; Step 7: Use the floating frame connection hole 8.2 on the fixed frame 8 to install and position the wave energy power generation device as a whole on the offshore floating platform or other offshore power generation structure.

[0060] During the manufacture and installation of the transmission case 3, the two one-way clutch gears 3.3 are simultaneously meshed with the internal teeth of the inner ring gear 3.1. The technical requirements for the gear transmission installation should meet the gear pair accuracy grade ISO 8 or above, with a normal side clearance of 0.08 to 0.13 mm. Seawater-resistant grease (such as composite calcium sulfonate-based grease or polyurea-based grease) must be used for lubrication.

[0061] The working principle of the present invention is as follows: for a transmission box 3, when the float 1 moves up and down with the waves, it will drive the long rocker 2.2 to perform a bidirectional rotational motion of alternating forward and reverse rotation around the hinge shaft 2.6 at the intersection of the frame rod 2.1.1 and the long rocker 2.2; specifically, when the float 1 rises, the long rocker 2.2 rotates forward; when the float 1 sinks, the long rocker 2.2 reverses. Since the middle part of the long rocker arm 2.2 is rotatably connected to the lower end of the connecting rod 2.3, and the upper end of the connecting rod 2.3 is rotatably connected to the left end of the short rocker arm 2.4, and the right end of the short rocker arm 2.4 is tightly fitted and fixedly connected to the outer cylindrical surface of the inner gear ring 3.1 through the clamp group 2.5, the swing of the long rocker arm 2.2 will drive the short rocker arm 2.4 to swing completely synchronously with the long rocker arm 2.2, and the swing of the short rocker arm 2.4 will drive the inner gear ring 3.1 to perform a bidirectional rotational motion around its own axis, alternating between forward and reverse rotation; specifically, when the long rocker arm 2.2 rotates forward, the short rocker arm 2.4 rotates forward and the inner gear ring 3.1 rotates forward; when the long rocker arm 2.2 rotates reversely, the short rocker arm 2.4 rotates reversely and the inner gear ring 3.1 rotates reversely. Since the one-way clutch gears 3.3 of the output shaft system and the reversing shaft system inside the transmission case are meshed with the internal teeth of the inner ring gear 3.1, and the reversing gears 3.2 on the output shaft system and the reversing shaft system are meshed with each other externally, the bidirectional rotational motion of the inner ring gear 3.1 will drive the one-way clutch gears 3.3 to perform bidirectional rotational motion around their respective axes, alternating between forward and reverse rotation. Specifically, when the inner ring gear 3.1 rotates forward, it drives the two one-way clutch gears 3.3 to rotate forward at the same time; when the inner ring gear 3.1 rotates reversely, it drives the two one-way clutch gears 3.3 to rotate reversely at the same time. When the one-way clutch gear 3.3 on the output shaft 3.10 rotates forward, it drives the output shaft 3.10 to rotate forward. Since the output shaft 3.10 passes through the coupling 4, the transmission 5, the flywheel 6 on the outside of the inner gear ring 3.1 in sequence and is connected to the generator 7 to generate electricity, the forward rotation power of the one-way clutch gear 3.3 on the output shaft 3.10 is transmitted to the output shaft 3.10, driving the output shaft 3.10 to rotate forward to generate electricity, thereby completing the process of converting the mechanical energy generated by the float 1 during the upward stroke into electrical energy.When the one-way clutch gear 3.3 on the reversing shaft 3.9 rotates in the reverse direction, it drives the reversing shaft 3.9 to rotate in the reverse direction. Since a reversing gear 3.2 is fixedly mounted on the outer side of the output shaft 3.10 and the reversing shaft 3.9, the reverse rotation of the reversing shaft 3.9 drives the reversing gear 3.2 on the reversing shaft 3.9 in the reverse direction. Since the two reversing gears 3.2 are externally meshed, the reverse rotation of the reversing gear 3.2 on the reversing shaft 3.9 drives the reversing gear 3.2 on the output shaft 3.10 to rotate forward, thereby driving the output shaft 3.10 to rotate forward. Since the output shaft 3.10 passes through the coupling 4, the transmission 5, and the flywheel 6 on the outer side of the inner gear ring 3.1 in sequence and is connected to the generator 7 to generate electricity, the reverse power of the one-way clutch gear 3.3 connected to the reversing shaft 3.9 is transmitted to the output shaft 3.10, driving the output shaft 3.10 to rotate forward to generate electricity, thereby completing the process of converting the mechanical energy generated by the float 1 during the downward stroke into electrical energy.

[0062] For a set of conversion modules (two transmission boxes 3), the output shaft 3.10 of the inner transmission box 3 is connected to the transmission 5 to generate electricity. When the power of the inner transmission box 3 is larger and its output speed exceeds the driving speed of the one-way clutch gear 3.3 in the outer transmission box 3, the speed of the output shaft 3.10 will unimpededly surpass the driving speed of the one-way clutch gear 3.3 in the outer transmission box 3, and the power will eventually be transmitted to the generator 7; when the power of the outer transmission box 3 is larger and its output speed exceeds the driving speed of the one-way clutch gear 3.3 in the inner transmission box 3, the speed of the output shaft 3.10 will unimpededly surpass the driving speed of the one-way clutch gear 3.3 in the inner transmission box 3, and the power will eventually be transmitted to the generator 7, and finally the mechanical energy generated by the unidirectional rotational motion will be converted into electrical energy through the generator 7, that is, the whole process of converting wave energy into electrical energy is completed.

[0063] For the two sets of conversion modules (a total of four transmission boxes 3) located at both ends of the fixed frame 8 on both sides of the transmission 5, when the output shaft 3.10 of the conversion module at one end has greater power and faster speed, its output speed exceeds the driving speed of the one-way clutch gear 3.3 in the transmission box 3 of the conversion module at the other end, the speed of the output shaft 3.10 will unimpededly surpass the driving speed of the one-way clutch gear 3.3 in the transmission box 3 of the conversion module at the other end, and the power will eventually be transmitted to the generator 7. Finally, the mechanical energy generated by the unidirectional rotational motion is converted into electrical energy through the generator 7, completing the entire process of converting wave energy into electrical energy.

[0064] Although the present invention has been described using the above preferred embodiments, they are not intended to limit the scope of protection of the present invention. Any person skilled in the art who makes various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention still fall within the scope of protection of the present invention.

Claims

1. A wave energy power generation device with four floats and double rocker arms in series, characterized in that: It includes two sets of conversion modules and one set of variable speed power generation module, all of which are fixed on a fixed frame; The conversion module includes two floats, two transmission boxes, and two double rocker arms, wherein one end of one double rocker arm is connected to a float, and the other end is connected to the inner gear ring of one transmission box; one end of the other double rocker arm is connected to another float, and the other end is connected to the inner gear ring of another transmission box. The two transmission boxes in the conversion module are connected in series and rotate synchronously through the output shaft; The variable speed power generation module includes a coupling, an intermediate shaft, a transmission, a flywheel and a generator; The output shaft of one conversion module is connected to the low-speed shaft of the transmission through a coupling, and the output shaft of the other conversion module is connected to the low-speed shaft of the transmission through an intermediate shaft and couplings at both ends of the intermediate shaft. The high-speed shaft of the transmission is connected to the generator, and a flywheel is installed on the high-speed shaft; The transmission box includes the ring gear shaft system, output shaft system, reversing shaft system and support system; The gear ring shaft system includes the inner gear ring, gear ring seal and gear ring bearing which can rotate in both directions; The output shaft system includes an output shaft partially inside the transmission case and partially outside the transmission case, a one-way clutch gear located inside the transmission case and fixed to the output shaft, a reversing gear located inside the transmission case and fixed to the output shaft, a transmission shaft bearing for supporting the output shaft, a transparent cover seal located at the connection between the output shaft and the transmission shaft bearing, and a spacer set for axially positioning the output shaft system parts; The reversing shaft system includes a reversing shaft located in the transmission box, a one-way clutch gear located in the transmission box and fixed on the reversing shaft, a reversing gear located in the transmission box and fixed on the reversing shaft, a transmission shaft bearing for supporting the reversing shaft, and a spacer set for axially positioning the reversing shaft system parts; The conversion module includes an inner transmission case located on a side close to the transmission and an outer transmission case located on a side away from the transmission; As for the outer transmission case, the support system of the outer transmission case includes a transparent cover end plate, a blind cover end plate, a top screw assembly for loading and unloading and maintaining the transmission shaft bearing, and a stud bolt assembly for achieving relative fixation of the transparent cover end plate and the blind cover end plate. One end of the inner gear ring is rotatably connected to the transparent cover end plate through the gear ring bearing, and the other end of the inner gear ring is rotatably connected to the blind cover end plate through the gear ring bearing. The gear ring seal is arranged at the connection between the inner gear ring and the gear ring bearing. The gear ring shaft system, the output shaft system, and the reversing shaft system are clamped and installed between the transparent cover end plate and the blind cover end plate. The one-way clutch gears of the output shaft system and the reversing shaft system inside the transmission case are meshed with the inner teeth of the inner gear ring, and the reversing gears on the output shaft system and the reversing shaft system are externally meshed with each other. As for the inner transmission case, the support system of the inner transmission case includes two transparent cover end plates, a screw assembly for loading and unloading and maintaining the transmission shaft bearing, and a stud bolt assembly for achieving relative fixation of the two transparent cover end plates. Both ends of the inner gear ring are rotatably connected to the two transparent cover end plates through the gear ring bearing. The gear ring seal is provided at the connection between the inner gear ring and the gear ring bearing. The gear ring shaft system, output shaft system, and reversing shaft system are clamped and installed between the two transparent cover end plates. The one-way clutch gears of the output shaft system and the reversing shaft system inside the transmission case are meshed with the internal teeth of the inner gear ring, and the reversing gears on the output shaft system and the reversing shaft system are externally meshed with each other. The blind cover end plate includes a blind cover gear ring bearing seat, two blind cover bearing seats located inside the blind cover gear ring bearing seat, blind cover stud bolt holes located outside the diameter of the blind cover gear ring bearing seat, blind cover top screw holes on the outer side of the blind cover end plate corresponding to the blind cover bearing seat, and blind cover foot holes at the bottom foot of the blind cover end plate; The transparent cover end plate includes a transparent cover gear ring bearing seat, a blind hole bearing seat and a through hole bearing seat located inside the transparent cover gear ring bearing seat, an output shaft hole, a transparent cover stud bolt hole located outside the diameter of the transparent cover gear ring bearing seat, a transparent cover top screw hole on the outer side of the transparent cover end plate corresponding to the blind hole bearing seat, and a transparent cover foot hole at the foot of the transparent cover end plate; The double rocker arm includes a frame, a long rocker, a connecting rod, a short rocker, a clamp group, a hinge shaft and a locking bolt group, one end of the long rocker is fixedly connected to the float, the other end of the long rocker is rotatably connected to the frame through a hinge shaft, the frame is fixedly connected to the bottom of the fixed frame, the lower end of the connecting rod is rotatably connected to the middle part of the long rocker through the hinge shaft, the upper end of the connecting rod is rotatably connected to one end of the short rocker through the hinge shaft, and the other end of the short rocker is fixedly connected to the inner gear ring through the clamp group; The clamp assembly includes a clamp ring that is tightly fitted and fixedly connected to the inner gear ring, and the clamp ring is fixedly connected to one end of the short rocker through a clamp bolt assembly and a clamp reinforcement plate; The hinge shaft is fixedly connected to the upper and lower ends of the connecting rod and the lower end of the frame rod by locking bolt groups respectively. The hinge shaft is provided with a bearing at the hinge center with the long rocker arm and the short rocker arm. The two end surfaces of the bearing are respectively provided with a sealing ring. The outer diameter of the bearing is fixedly installed with a bearing sleeve. The bearing sleeve is respectively fixedly arranged inside the long rocker arm and the short rocker arm. The hinge shaft is respectively installed on the long rocker arm and the short rocker arm through the bearing cover plate and the corresponding cover plate bolts.

2. The series-connected double rocker arm four-float wave energy power generation device according to claim 1, characterized in that: In the outer transmission case, the transparent cover gear ring bearing seat and the blind cover gear ring bearing seat supporting the gear ring shaft system, the blind hole bearing seat and the blind cover bearing seat supporting the reversing shaft system, the through hole bearing seat and the blind cover bearing seat supporting the output shaft system, and the transparent cover stud bolt holes of the transparent cover end plate and the blind cover stud bolt holes of the blind cover end plate are all corresponding to each other and coaxial; In the inner transmission box, the two transparent cover ring gear bearing seats supporting the ring gear shaft system, the two blind hole bearing seats supporting the reversing shaft system, the two through hole bearing seats supporting the output shaft system, and the transparent cover stud bolt holes of the two transparent cover end plates are all coaxial with each other.

3. The series-connected double rocker arm four-float wave energy power generation device according to claim 2, characterized in that: The top screw assembly includes a top screw, a locking nut and a sealing gasket, and the top screw assembly is installed on the transparent cover top screw screw holes and the blind cover top screw screw holes of the corresponding transparent cover end plate and blind cover end plate.

4. The wave energy power generation device with two rockers and four floats in series according to claim 1, characterized in that: The frame includes a frame rod, a rib plate, a frame bottom plate and a frame bolt group. The lower end of the frame rod is rotatably connected to the long rocker, the upper end of the frame rod is fixedly connected to the frame bottom plate through the rib plate, and the frame bottom plate is fixedly connected to the fixing frame through the frame bolt group.

5. The wave energy power generation device with two rockers and four floats in series according to claim 4 is characterized in that: The fixing frame is provided with a box frame connection hole, a floating frame connection hole, a transmission fixing hole and a generator mounting hole. The box frame connection holes correspond to the transparent cover bottom foot holes and the blind cover bottom foot holes respectively provided on the transparent cover end plate and the blind cover end plate.

6. A method for installing the series-connected double rocker arm four-float wave energy power generation device according to claim 5, characterized in that: The installation method of the one-way clutch gear of the output shaft system and the reversing shaft system is as follows: Step 1: Define the driving direction of the one-way clutch gear connected to the output shaft as the forward rotation direction, and ensure that only the forward rotation of the one-way clutch gear can drive the output shaft to rotate forward, otherwise it will idle and slip; Step 2: Set the driving direction of the one-way clutch gear connected to the reversing shaft to the reverse rotation direction, and make sure that only the reverse rotation of the one-way clutch gear can drive the reversing shaft to rotate in the reverse direction, otherwise it will idle and slip; The two one-way clutch gears are respectively installed on the output shaft and the reversing shaft in a transmission box in opposite driving directions.

7. The installation method according to claim 6, characterized in that: The installation method of the series-connected double rocker arm four-float wave energy power generation device is as follows: Step 1: Install a set of conversion modules at one end of the fixed frame; Step 2: Install another set of conversion modules at the other end of the fixed frame; Step 3: Install the transmission, flywheel and generator on the fixed frame according to the sequence and process requirements; Step 4: Install the output shaft of one conversion module and the transmission through the coupling according to the process requirements, and install the output shaft of the other conversion module and the transmission through the intermediate shaft and the couplings at both ends of the intermediate shaft according to the process requirements; Step 5: Install and position the wave energy power generation device on the offshore floating platform or other offshore power generation structure through the floating frame connection holes on the fixed frame; The steps of installing a set of conversion modules at one end of the fixing frame include: First, assemble the two transmission boxes and two double rocker arms in sequence according to the process requirements. Then, use the frame bolt assembly to install and position the two frames and two transmission boxes on the fixed frame according to the process requirements. Use the clamp assembly to install one end of the two double rocker arms to the corresponding transmission box according to the process requirements. Then, install the two floats on the corresponding double rocker arms according to the process requirements. The steps for installing another set of conversion modules at the other end of the mounting bracket include: First, complete the assembly of the two transmission boxes and two double rocker arms in sequence according to the process requirements. Secondly, use the frame bolt group to install and position the two frames and two transmission boxes on the fixed frame according to the process requirements, and use the clamp group to respectively install one end of the two double rocker arms to the corresponding transmission box according to the process requirements. Then, install the two floats on the corresponding double rocker arms according to the process requirements.

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