Gear box of wave-activated generator

Abstract

The utility model discloses a wave-activated generator gear box which comprises a box body, a primary input shaft is arranged at the center in the box body, a primary gear is arranged on the surface of the input shaft, a secondary middle gear shaft is arranged on one side of the primary gear, and a secondary gear meshed with the primary gear is arranged on the secondary middle gear shaft. A third-stage high-speed shaft is arranged at the bottom of the second-stage middle gear shaft, the surface of the third-stage high-speed shaft is in meshed connection with the second-stage gear through a third-stage gear, a motor shaft is fixedly connected to the bottom of the third-stage high-speed shaft, a motor is arranged at the bottom of the box body, an impeller is arranged at the top of the box body, and the impeller is connected with the primary input shaft through a flange.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear boxes, and more specifically, relates to a gear box for a wave generator. Background Art

[0002] With traditional energy sources becoming increasingly depleted and environmental pollution becoming increasingly serious, wave power generation, as a renewable energy development and utilization option, has garnered widespread attention. Wave power generation primarily converts wave force into mechanical, air pressure, or hydraulic energy, which is then converted to electrical energy via a transmission mechanism or generator. Specific conversion methods include mechanical, pneumatic, and hydraulic. While wave power technology still faces challenges, such as high manufacturing costs, device reliability and stability, and grid connection, some progress has been made in recent years.

[0003] In existing technologies, wave energy generation has the following disadvantages: 1. Instability, which places high demands on the stability and reliability of the power generation device; 2. Since wave power generation devices need to operate in the ocean and are affected by seawater corrosion and wave impact for a long time, high corrosion resistance and stability requirements are required for the device materials, which increases manufacturing costs and maintenance difficulties; 3. Wave power generation devices require a certain amount of ocean space and may have a certain impact on the marine ecological environment, such as affecting the habitat and migration paths of marine organisms.

[0004] Therefore, it is necessary to develop and design a wave power generation gearbox that can simultaneously meet the requirements of low cost, high reliability, high precision, long service life and strong impact resistance. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a wave generator gearbox to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wave generator gearbox, comprising a box body, a primary input shaft is provided at the center of the box body, a primary gear is provided on the surface of the primary input shaft, a secondary middle gear shaft is provided on one side of the primary gear, a secondary middle gear shaft is provided on the secondary middle gear shaft, a third-stage high-speed shaft is provided at the bottom of the secondary middle gear shaft, the surface of the third-stage high-speed shaft is meshed with the second gear through the third-stage gear, a motor shaft is fixedly connected to the bottom of the third-stage high-speed shaft, a motor is provided at the bottom of the box body, an impeller is provided at the top of the box body, and the impeller is connected to the primary input shaft through a flange.

[0007] Preferably, primary cylindrical roller bearings and primary tapered bearings are respectively provided at both ends of the primary input shaft surface, the primary gear surface is positioned by a primary distance ring, and the primary tapered bearing surface is also provided with a locking nut.

[0008] Preferably, a secondary tapered bearing and a secondary cylindrical roller bearing are respectively provided at both ends of the secondary middle gear shaft surface, a pressure plate is provided on the secondary tapered bearing surface, and a secondary distance ring is provided on the secondary cylindrical roller bearing surface.

[0009] Preferably, three-stage tapered bearings and three-stage cylindrical roller bearings are provided at both ends of the three-stage high-speed shaft surface.

[0010] Preferably, the box body is divided into a left cover and a right cover, and a mechanical pump is provided at the bottom of the right cover.

[0011] Preferably, transparent covers for sealing are provided at both ends of the secondary middle gear shaft and the tertiary high-speed shaft.

[0012] The utility model provides a wave generator gearbox, which has the following beneficial effects:

[0013] 1. This gearbox has the characteristics of high-precision transmission, multi-working conditions, low cost, light weight, good sealing performance, and good commercial value;

[0014] 2. A compact box structure is adopted to compress unnecessary space, reduce the weight of the gearbox and lower costs. Multiple skeleton oil seals are used and grease is added to the skeleton oil seals to ensure water penetration. The flange is connected to the motor body, and the gearbox high-speed shaft and the motor shaft are connected with a spline, avoiding the use of a coupling, facilitating manufacturing, saving space and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the primary input shaft structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the secondary middle gear shaft of the utility model.

[0018] Figure 4 It is a schematic diagram of the three-stage high-speed shaft structure of the utility model.

[0019] Figure 5 It is a schematic diagram of the overall structure of the utility model.

[0020] In the figure, 1. housing; 2. primary input shaft; 3. primary gear; 4. secondary middle gear shaft; 5. secondary gear; 6. tertiary high-speed shaft; 7. tertiary gear; 8. flange; 9. primary cylindrical roller bearing; 10. primary tapered bearing; 11. primary distance ring; 12. locking nut; 13. secondary tapered bearing; 14. secondary cylindrical roller bearing; 15. secondary distance ring; 16. tertiary tapered bearing; 17. tertiary cylindrical roller bearing; 18. left cover; 19. right cover; 20. mechanical pump; 21. transparent cover; 22. motor shaft; 23. pressure plate. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] See also Figures 1 to 5The utility model provides a technical solution: a wave generator gearbox, including a housing 1, which is divided into left and right boxes and made of ductile iron 400. A primary input shaft 2 is provided at the center of the housing 1, and a primary gear 3 is provided on the surface of the primary input shaft 2. A secondary intermediate gear shaft 4 is provided on one side of the primary gear 3. A secondary intermediate gear shaft 4 is provided on the secondary intermediate gear shaft 4, and a secondary gear 5 meshing with the primary gear 3 is provided. A tertiary high-speed shaft 6 is provided at the bottom of the secondary intermediate gear shaft 4, and the surface of the tertiary high-speed shaft 6 is meshed with the secondary gear 5 via a tertiary gear 7. A motor shaft 22 is fixedly connected to the bottom of the tertiary high-speed shaft 6. A motor is provided at the bottom of the housing 1, and an impeller is provided at the top of the housing 1. The impeller is connected to the primary input shaft 2 via a flange 8. A primary cylindrical roller bearing 9 and a primary tapered bearing 10 are provided at both ends of the surface of the primary input shaft 2, respectively. The surface of the primary gear 3 is positioned by a primary distance ring 11, and a locking nut 12 is also provided on the surface of the primary tapered bearing 10. A secondary tapered bearing 13 and a secondary cylindrical roller bearing 14 are respectively installed at both ends of the secondary center gear shaft 4. The secondary tapered bearing 13 is equipped with a pressure plate 23, and the secondary cylindrical roller bearing 14 is equipped with a secondary spacer ring 15. A secondary tapered bearing 16 and a third cylindrical roller bearing 17 are installed at both ends of the tertiary high-speed shaft 6. The primary input shaft 2 is made of 42CrMoA, the primary gear 3 is made of 18CrNiMoA, the secondary center gear shaft 4 is made of 18CrNiMoA, the secondary gear 5 is made of 18CrNiMoA, and the tertiary high-speed shaft 6 is made of 18CrNiMoA. The gear ratios are 20, with a primary speed ratio of 3.652 and a secondary speed ratio of 5.478, and a center distance of 355. The housing 1 is divided into a left cover 18 and a right cover 19. A mechanical pump 20 is installed at the bottom of the right cover 19. A transparent cover 21 is also installed at both ends of the secondary center gear shaft 4 and the tertiary high-speed shaft 6 for sealing.

[0025] The specific usage and function of this embodiment are as follows: In wave power generation, the gearbox is connected to the impeller via flange 8, which is locked by a lock nut 12. When the impeller rotates under the impact of water flow, the primary input shaft 2 rotates at the same speed as the impeller. The primary input shaft 2 and the primary gear 3 are connected by a flat key and an interference fit to ensure that the primary input shaft 2 and the primary gear 3 have the same speed. The secondary intermediate gear 4 is machined with a gear, and the primary gear 3 meshes with the gear on the secondary intermediate gear 4, driving the secondary intermediate gear 4 to rotate. The intermediate gear is connected to the secondary intermediate gear 4 by a flat key and an interference fit to ensure that the secondary intermediate gear 4 and the intermediate gear have the same speed. The intermediate gear meshes with the gear on the tertiary high-speed shaft 6, driving the tertiary high-speed shaft 6 to rotate. The tertiary high-speed shaft 6 is splined to the motor shaft 22, driving the motor rotor to rotate and generate electricity. The gearbox can be operated under different operating conditions, and the primary input shaft 2 can be connected to different wave power generation components. It can also achieve forward and reverse rotation. A compact box body 1 structure is adopted to compress unnecessary space, reduce the weight of the gearbox and lower the cost. Multiple skeleton oil seals are adopted and grease is added to the skeleton oil seals to ensure water penetration. The flange 8 is used to connect with the motor body, and the gearbox high-speed shaft and the motor shaft 22 are connected with a spline, avoiding the use of a coupling, facilitating manufacturing, saving space and reducing costs.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wave generator gearbox, comprising a box body (1), characterized in that: A primary input shaft (2) is provided at the center of the housing (1), a primary gear (3) is provided on the surface of the primary input shaft (2), a secondary middle gear shaft (4) is provided on one side of the primary gear (3), a secondary gear (5) meshingly connected with the primary gear (3) is provided on the secondary middle gear shaft (4), a tertiary high-speed shaft (6) is provided at the bottom of the secondary middle gear shaft (4), the surface of the tertiary high-speed shaft (6) is meshingly connected with the secondary gear (5) via a tertiary gear (7), a motor shaft (22) is fixedly connected to the bottom of the tertiary high-speed shaft (6), a motor is provided at the bottom of the housing (1), an impeller is provided at the top of the housing (1), and the impeller is connected to the primary input shaft (2) via a flange (8).

2. A wave generator gearbox according to claim 1, characterized in that: A primary cylindrical roller bearing (9) and a primary tapered bearing (10) are respectively provided at both ends of the surface of the primary input shaft (2); the surface of the primary gear (3) is positioned by a primary distance ring (11); and a locking nut (12) is also provided on the surface of the primary tapered bearing (10).

3. A wave generator gearbox according to claim 1, characterized in that: A secondary tapered bearing (13) and a secondary cylindrical roller bearing (14) are respectively provided at both ends of the surface of the secondary middle gear shaft (4); a pressure plate (23) is provided on the surface of the secondary tapered bearing (13); and a secondary distance ring (15) is provided on the surface of the secondary cylindrical roller bearing (14).

4. A wave generator gearbox according to claim 1, characterized in that: Two ends of the surface of the three-stage high-speed shaft (6) are provided with three-stage tapered bearings (16) and three-stage cylindrical roller bearings (17).

5. The wave generator gearbox according to claim 1, characterized in that: The box body (1) is divided into a left cover (18) and a right cover (19), and a mechanical pump (20) is provided at the bottom of the right cover (19).

6. The wave generator gearbox according to claim 1, characterized in that: Both ends of the secondary middle gear shaft (4) and the tertiary high-speed shaft (6) are also provided with transparent covers (21) for sealing.

Images