Gearbox for wave power

Abstract

The utility model discloses a gear box for wave power generation relates to gear box technical field, including small step shell, big step shell, the small step shell is connected as an organic whole with big step shell, the inside of small step shell is provided with inner sleeve, the axle position of inner sleeve is rotatively connected with power input shaft, the surface of power input shaft is installed with input shaft gear, the periphery of input shaft gear rotatively connected with three input planetary gears, three input planetary gears outer circle are engaged with gear ring and are connected. The utility model discloses with the coaxial of power input shaft 7 in small step shell middle part and power output shaft 6 in big step shell middle part, is convenient for installing and carries out coaxial series connection, through the rotation speed difference of power input shaft and power output shaft, realizes the speed increasing of the power mechanical energy of ocean wave power generation device, thereby effectively improves the power mechanical energy of wave power generation, improves the power generation efficiency of generator.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically a gearbox for wave power generation. Background Technology

[0002] Gearboxes are important mechanical devices widely used in various industries, marine sectors, and transportation vehicles. They achieve multiple functions through combinations of gears of different sizes, including acceleration, deceleration, changing the direction of transmission, changing torque, clutch engagement, and power distribution.

[0003] Wave power generation is a technology that converts the energy of ocean waves into electrical energy. In a wave power generation device, the gearbox is a key component, responsible for converting the low-speed rotational kinetic energy propelled by the waves into high-speed rotational kinetic energy, thereby driving a generator to produce electricity. The gearbox converts the reciprocating motion of the waves into unidirectional rotational motion, thus driving the generator. Through the gearbox's speed-increasing function, the generator's rotational speed can be increased, thereby improving power generation efficiency. The gearbox efficiently transfers the collected wave energy to the generator, minimizing energy loss.

[0004] Currently, the input and output shafts of gearboxes used in wave power generation are not coaxial, making it difficult to achieve coaxial connection of the marine power generation device and resulting in complex connections between the gearbox and the marine power generation device. Therefore, there is a need to provide a gearbox for wave power generation. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a gearbox for wave power generation, so as to solve the technical problem that the input shaft and output shaft of the current wave power generation gearbox are not coaxial, making it difficult to achieve coaxial connection of marine power generation devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gearbox for wave power generation includes a small stepped housing and a large stepped housing, which are connected as a whole. The small stepped housing has a first inner sleeve inside, and a power input shaft is rotatably connected to the axial center of the first inner sleeve. An input shaft gear is mounted on the surface of the power input shaft, and three input planetary gears are rotatably connected around the input shaft gear. The outer rings of the three input planetary gears are meshed with a gear ring, which is mounted on the surface of the first inner sleeve of the small stepped housing.

[0008] The interior of the large stepped housing is provided with a second inner sleeve. A power output shaft is rotatably connected to the axial center of the second inner sleeve. An output shaft gear is rotatably connected around the power output shaft. Three output planetary gears are rotatably connected around the output shaft gear. A gear ring is meshed with the outer ring of the three output planetary gears and is mounted on the surface of the second inner sleeve of the large stepped housing.

[0009] As a preferred embodiment of this utility model, a rolling bearing is provided between the power input shaft and the first inner sleeve inside the small step housing, and the power input shaft is rotatably connected to the first inner sleeve inside the small step housing through the rolling bearing.

[0010] As a preferred technical solution of this utility model, the first inner sleeve inside the small step shell is fixed with sleeve cover plates at both ends. Three fixed bases are fixedly installed on the surface of the sleeve cover plate at equal intervals around the circumference. A rotating shaft is fixed on the surface of each fixed base. The input planetary gear is installed on the surface of the rotating shaft.

[0011] As a preferred technical solution of this utility model, two sleeve bearings are provided between the small stepped housing and the inner wall of the first inner sleeve. The two sleeve bearings are respectively provided on both sides of the gear ring, and the small stepped housing and the gear ring are locked together by locking screws.

[0012] As a preferred technical solution of this utility model, the two ends of the second inner sleeve inside the large step housing are fixed with sleeve cover plates, and rolling bearing three and rolling bearing two are provided between the power output shaft and the second inner sleeve inside the large step housing. The two ends of the power output shaft are rotatably connected to the second inner sleeve inside the large step housing through rolling bearing three and rolling bearing two.

[0013] As a preferred technical solution of this utility model, three fixed bases are fixedly installed at equal intervals around the circumference of the sleeve cover plate surface inside the large step shell. A rotating shaft is fixed on the surface of each fixed base, and the output planetary gear is installed on the surface of the rotating shaft.

[0014] As a preferred embodiment of this utility model, two sleeve bearings are provided between the large step housing and the inner wall of the second inner sleeve. The two sleeve bearings are respectively located on both sides of the gear ring, and the large step housing and the gear ring are locked together by two locking screws.

[0015] As a preferred embodiment of this utility model, three gear holes are provided on the second inner sleeve surface of the large step shell and on the first inner sleeve surface of the small step shell. The output planetary gear passes through the gear hole on the second inner sleeve surface inside the large step shell and meshes with the gear ring. The input planetary gear passes through the gear hole on the first inner sleeve surface inside the small step shell and meshes with the gear ring.

[0016] In a preferred embodiment of this invention, the power input shaft and the power output shaft rotate coaxially, and the power input shaft and the power output shaft rotate at different speeds.

[0017] This invention integrates a small-step shell and a large-step shell, utilizing the coaxiality of the power input shaft 7 in the middle of the small-step shell and the power output shaft 6 in the middle of the large-step shell for easy installation and coaxial connection. By using the different rotational speeds of the power input shaft and the power output shaft, the power mechanical energy of the ocean wave power generation device is increased, thereby effectively improving the power mechanical energy of wave power generation and improving the power generation efficiency of the generator.

[0018] This invention uses the power input shaft 7 as the power input shaft of the gearbox. During the rotation of the power input shaft, it drives the three input planetary gears 12 to rotate. At this time, since the gear ring 23 is fixed to the surface of the small stepped housing 1, it cannot rotate. Therefore, the three input planetary gears 12 rotate circumferentially around the gear ring 23. Since the fixed base 10 is fixed to the sleeve cover plate 25 on the surface of the inner sleeve 21 of the small stepped housing 1, the three input planetary gears 12 will drive the inner sleeve 21 inside the small stepped housing 1 to rotate inside the small stepped housing 1 (the first inner sleeve 21 can rotate inside the small stepped housing 1 via the sleeve bearing 22). The first inner sleeve 21 inside the small stepped housing 1 is fixed as a single unit to the second inner sleeve 24 inside the large stepped housing 4. Therefore, the small... During the rotation of the first inner sleeve 21 inside the stepped housing 1, it will drive the second inner sleeve 21 inside the large stepped housing 4 to rotate synchronously. (The first inner sleeve 21 can rotate inside the large stepped housing 4 through the sleeve bearing 22.) At this time, during the rotation of the second inner sleeve 24 inside the large stepped housing 4, it will drive the three output planetary gears 15 to roll along the inner wall of the gear ring 23 inside the large stepped housing 4. While the three output planetary gears 15 are rolling along the inner wall of the gear ring 23, they will push the output shaft gear 18 on the surface of the power output shaft 6 to rotate synchronously, thereby driving the power output shaft 6 to output power. During this period, due to the difference in diameter, number of teeth and module between the output planetary gears 15 and the input planetary gears 12, the rotational speeds of the power output shaft 6 and the power input shaft 7 are different.

[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the gearbox for wave power generation according to this utility model. Figure 1 ;

[0021] Figure 2 This is a front view schematic diagram of the gearbox for wave power generation according to this utility model. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the left side of the gearbox for wave power generation according to this utility model. Figure 3 ;

[0023] Figure 4 This is a schematic diagram of the structure of the power input shaft, input planetary gear, output planetary gear, and power output shaft of this utility model. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the structure of the power input shaft, input planetary gear, output planetary gear, and power output shaft of this utility model. Figure 2 ;

[0025] Figure 6 This is a schematic diagram of the structure of the inner sleeve, sleeve bearing, and gear ring of this utility model. Figure 1 ;

[0026] Figure 7 This is a schematic diagram of the structure of the inner sleeve, sleeve bearing, and gear ring of this utility model. Figure 2 ;

[0027] Figure 8 This is a structural schematic diagram of the inner sleeve, sleeve bearing, gear ring, and fixed base of this utility model;

[0028] In the diagram: 1. Small step housing; 2. Locking screw one; 3. Locking screw two; 4. Large step housing; 5. Large cover plate; 6. Power output shaft; 7. Power input shaft; 8. Small cover plate; 9. Rolling bearing one; 10. Fixed base one; 11. Rotating shaft; 12. Input planetary gear; 14. Fixed base two; 15. Output planetary gear; 17. Input shaft gear; 18. Output shaft gear; 19. Rolling bearing two; 21. First inner sleeve; 22. Sleeve bearing; 23. Gear ring; 24. Second inner sleeve; 25. Sleeve cover plate; 26. Gear hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable. Example 1

[0034] Please see Figure 1-8 The present invention provides a technical solution: a gearbox for wave power generation, comprising a small stepped housing 1 and a large stepped housing 4, wherein the small stepped housing 1 and the large stepped housing 4 are connected as one unit, a first inner sleeve 21 is provided inside the small stepped housing 1, a power input shaft 7 is rotatably connected to the axial position of the inner sleeve 21, an input shaft gear 17 is mounted on the surface of the power input shaft 7, three input planetary gears 12 are rotatably connected around the input shaft gear 17, and a gear ring 23 is meshed with the outer ring of the three input planetary gears 12, and the gear ring 23 is mounted on the surface of the first inner sleeve 21 of the small stepped housing 1;

[0035] The interior of the large stepped housing 4 is provided with a second inner sleeve 24. A power output shaft 6 is rotatably connected to the axial position of the second inner sleeve 24. An output shaft gear 18 is rotatably connected around the power output shaft 6. Three output planetary gears 15 are rotatably connected around the output shaft gear 18. A gear ring 23 is meshed with the outer ring of the three output planetary gears 15. The gear ring 23 is installed on the surface of the second inner sleeve 24 of the large stepped housing 4.

[0036] This invention integrates a small-step shell and a large-step shell, utilizing the coaxiality of the power input shaft 7 in the middle of the small-step shell and the power output shaft 6 in the middle of the large-step shell for easy installation and coaxial connection. By using the different rotational speeds of the power input shaft and the power output shaft, the power mechanical energy of the ocean wave power generation device is increased, thereby effectively improving the power mechanical energy of wave power generation and improving the power generation efficiency of the generator.

[0037] A rolling bearing 9 is provided between the power input shaft 7 and the first inner sleeve 21 inside the small step housing 1, and the power input shaft 7 is rotatably connected to the first inner sleeve 21 inside the small step housing 1 through the rolling bearing 9.

[0038] Inside the small step housing 1, the inner sleeve 21 has sleeve cover plates 25 fixed at both ends. Three fixed bases 10 are fixedly installed on the surface of the sleeve cover plate 25 at equal intervals around the circumference. A rotating shaft 11 is fixed on the surface of each fixed base 10, and the input planetary gear 12 is installed on the surface of the rotating shaft 11.

[0039] Two sleeve bearings 22 are provided between the small stepped housing 1 and the inner wall of the first inner sleeve 21. The two sleeve bearings 22 are respectively located on both sides of the gear ring 23. The small stepped housing 1 and the gear ring 23 are locked together by locking screw 2.

[0040] The two ends of the second inner sleeve 24 inside the large step housing 4 are fixed with sleeve cover plates 25. The power output shaft 6 is provided with rolling bearing 3 20 and rolling bearing 2 19 between the power output shaft 6 and the second inner sleeve 24 inside the large step housing 4. The two ends of the power output shaft 6 are rotatably connected to the second inner sleeve 24 inside the large step housing 4 through rolling bearing 3 20 and rolling bearing 2 19.

[0041] Inside the large stepped housing 4, three fixed bases 14 are fixedly installed on the surface of the sleeve cover plate 25 at equal intervals around the circumference. A rotating shaft 11 is fixed on the surface of each fixed base 14, and the output planetary gear 15 is installed on the surface of the rotating shaft 11.

[0042] Two sleeve bearings 22 are provided between the large stepped housing 4 and the inner wall of the second inner sleeve 24. The two sleeve bearings 22 are respectively located on both sides of the gear ring 23. The large stepped housing 4 and the gear ring 23 are locked together by locking screw 2 3.

[0043] The second inner sleeve 24 of the large stepped housing 4 and the first inner sleeve 21 of the small stepped housing 1 are each provided with three gear holes 26. The output planetary gear 15 passes through the gear hole 26 on the surface of the second inner sleeve 24 inside the large stepped housing 4 and meshes with the gear ring 23. The input planetary gear 12 passes through the gear hole 26 on the surface of the first inner sleeve 21 inside the small stepped housing 1 and meshes with the gear ring 23.

[0044] The power input shaft 7 and the power output shaft 6 rotate coaxially, but the power input shaft 7 and the power output shaft 6 rotate at different speeds.

[0045] Specifically, the working principle of this utility model is as follows: This utility model uses the power input shaft 7 as the power input shaft of the gearbox. During the rotation of the power input shaft, it drives the three input planetary gears 12 to rotate. At this time, since the gear ring 23 is fixed on the surface of the small stepped housing 1, the gear ring 23 cannot rotate. Therefore, the three input planetary gears 12 rotate around the gear ring 23. Since the fixed base 10 is fixed on the sleeve cover plate 25 on the surface of the first inner sleeve 21 of the small stepped housing 1, the three input planetary gears 12 will drive the first inner sleeve 21 inside the small stepped housing 1 to rotate inside the small stepped housing 1 (the first inner sleeve 21 can rotate inside the small stepped housing 1 through the sleeve bearing 22). The first inner sleeve 21 inside the small stepped housing 1 and the second inner sleeve 24 inside the large stepped housing 4 Since they are fixed as one unit, the rotation of the first inner sleeve 21 inside the small step housing 1 will drive the second inner sleeve 24 inside the large step housing 4 to rotate synchronously. (The first inner sleeve 21 can rotate inside the large step housing 4 through the sleeve bearing 22.) At this time, the rotation of the second inner sleeve 24 inside the large step housing 4 will drive the three output planetary gears 15 to roll along the inner wall of the gear ring 23 inside the large step housing 4. While the three output planetary gears 15 are rolling along the inner wall of the gear ring 23, they will push the output shaft gear 18 on the surface of the power output shaft 6 to rotate synchronously, thereby driving the power output shaft 6 to output power. During this period, since the diameter, number of teeth and module of the output planetary gears 15 and the input planetary gears 12 are different, the rotation speeds of the power output shaft 6 and the power input shaft 7 are different.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wave power gear box comprising a small step casing (1), a large step casing (4), characterized in that: The small step housing (1) and the large step housing (4) are connected as one unit. The small step housing (1) is provided with a first inner sleeve (21). The power input shaft (7) is rotatably connected to the axial position of the first inner sleeve (21). An input shaft gear (17) is installed on the surface of the power input shaft (7). Three input planetary gears (12) are rotatably connected around the input shaft gear (17). The outer rings of the three input planetary gears (12) are meshed with a gear ring (23). The gear ring (23) is installed on the surface of the first inner sleeve (21) of the small step housing (1). The interior of the large stepped housing (4) is provided with a second inner sleeve (24). A power output shaft (6) is rotatably connected to the axial position of the second inner sleeve (24). An output shaft gear (18) is rotatably connected around the power output shaft (6). Three output planetary gears (15) are rotatably connected around the output shaft gear (18). A gear ring (23) is meshed with the outer ring of the three output planetary gears (15). The gear ring (23) is installed on the surface of the second inner sleeve (24) of the large stepped housing (4).

2. The gearbox for wave power generation according to claim 1, characterized in that: A rolling bearing (9) is provided between the power input shaft (7) and the first inner sleeve (21) inside the small step housing (1). The power input shaft (7) is rotatably connected to the inner sleeve (21) inside the small step housing (1) through the rolling bearing (9).

3. A gearbox for wave power generation according to claim 2, characterized in that: The first inner sleeve (21) inside the small step shell (1) is fixed with sleeve cover plates (25) at both ends. Three fixed bases (10) are fixedly installed on the surface of the sleeve cover plate (25) at equal intervals around the circumference. A rotating shaft (11) is fixed on the surface of each fixed base (10). The input planetary gear (12) is installed on the surface of the rotating shaft (11).

4. A gearbox for wave power generation according to claim 3, characterized in that: Two sleeve bearings (22) are provided between the small step housing (1) and the inner wall of the first inner sleeve (21). The two sleeve bearings (22) are respectively provided on both sides of the gear ring (23). The small step housing (1) and the gear ring (23) are locked together by a locking screw (2).

5. A gearbox for wave power generation according to claim 1, characterized in that: The two ends of the second inner sleeve (24) inside the large step housing (4) are fixed with sleeve cover plates (25). Rolling bearing three (20) and rolling bearing two (19) are provided between the power output shaft (6) and the second inner sleeve (24) inside the large step housing (4). The two ends of the power output shaft (6) are rotatably connected to the inner sleeve (21) inside the large step housing (4) through rolling bearing three (20) and rolling bearing two (19).

6. A gearbox for wave power generation according to claim 5, characterized in that: Three fixed bases (14) are fixedly installed at equal intervals around the surface of the sleeve cover plate (25) at one end of the large step housing (4). A rotating shaft (11) is fixed on the surface of each fixed base (14), and the output planetary gear (15) is installed on the surface of the rotating shaft (11).

7. A gearbox for wave power generation according to claim 6, characterized in that: Two sleeve bearings (22) are provided between the large step housing (4) and the inner wall of the second inner sleeve (24). The two sleeve bearings (22) are respectively provided on both sides of the gear ring (23). The large step housing (4) and the gear ring (23) are locked together by locking screw two (3).

8. A gearbox for wave power generation according to any one of claims 7 or 4, characterized in that: Three gear holes (26) are provided on the surface of the second inner sleeve (24) of the large step shell (4) and the surface of the first inner sleeve (21) of the small step shell (1). The output planetary gear (15) passes through the gear hole (26) on the surface of the second inner sleeve (24) inside the large step shell (4) and meshes with the gear ring (23). The input planetary gear (12) passes through the gear hole (26) on the surface of the first inner sleeve (21) inside the small step shell (1) and meshes with the gear ring (23).

9. A gearbox for wave power generation according to claim 1, characterized in that: The power input shaft (7) and the power output shaft (6) rotate coaxially, and the power input shaft (7) and the power output shaft (6) have different rotational speeds.

Images