Multi-stage noise reduction compact wind power gear box

Abstract

The invention discloses a multistage noise reduction compact wind power gear box, which relates to the technical field of gear boxes, and comprises a base and a first transmission assembly, a second transmission assembly and a connecting assembly are mounted at the right end of the upper side of the base, and the second transmission assembly is connected with the connecting assembly; the first transmission assembly comprises a supporting shell, a first transmission shaft, a first bearing, a sun gear and an inner gear ring, the supporting shell is fixed to the left end of the upper side of the base, the first transmission shaft is rotationally connected to the left end of the interior of the supporting shell, the first bearing is installed on the surface of the first transmission shaft, and the first bearing is fixed to the left end of the interior of the supporting shell; a sun gear is fixed to the right end of the first transmission shaft, an inner gear ring is arranged at the right end in the supporting shell, the sun gear is located in the inner gear ring, and through multi-stage planetary gear transmission, an automatic lubricating system and compact structural design, operation noise can be effectively lowered, the axial size is reduced, and the maintenance process is simplified.

Description

Technical Field

[0001] This invention relates to the field of gearboxes, and in particular to a multi-stage noise-reducing compact wind turbine gearbox. Background Technology

[0002] Wind power, as a clean and renewable energy source, plays an increasingly important role in the global energy structure transformation. It converts wind energy into mechanical energy by driving a wind turbine, which in turn generates electricity to provide green power to the grid. With the increasing severity of climate change and the advancement of environmental policies, wind power technology is developing rapidly, especially with the widespread application of large-scale wind turbines both offshore and onshore, placing higher demands on the reliability, efficiency, and environmental friendliness of the equipment. The core of a wind power system lies in the efficiency of wind energy capture and conversion, with the transmission components being a key link that directly affects the performance and lifespan of the entire unit. As the capacity of individual units continues to increase, wind power is developing towards greater efficiency and intelligence, but it also faces challenges such as noise control, spatial layout, and ease of maintenance.

[0003] The wind turbine gearbox is the core transmission device in a wind turbine generator set, located between the wind turbine and the generator. Its main function is to convert the low-speed, high-torque power of the wind turbine into the high-speed, low-torque power required by the generator, thereby achieving efficient power generation. Since the wind turbine typically operates at a relatively low speed, while the generator requires a higher speed to operate efficiently, the gearbox uses multi-stage gear transmission to increase speed and ensure energy conversion efficiency. The gearbox design must balance high load capacity, compact structure, and long-term reliability to withstand the frequently changing loads and harsh operating environments in wind power generation. Typical wind turbine gearboxes employ a planetary gear structure, which offers advantages such as a large transmission ratio, high load-bearing capacity, and high space utilization, but also places stringent requirements on manufacturing precision, lubrication systems, and vibration control. The performance of the gearbox directly affects the operational stability, noise level, and maintenance costs of the entire wind turbine generator set; therefore, its technological optimization has always been a focus of industry attention.

[0004] However, existing wind turbine gearboxes still have many shortcomings in practical applications. On the one hand, the vibration and noise generated by gear meshing during high-speed operation are significant problems. Traditional designs often lack effective noise reduction measures, causing noise to propagate through the structure, affecting the surrounding environment and potentially masking early fault signals. On the other hand, in pursuit of high power output, gearboxes often employ multi-stage transmission, resulting in excessively large axial dimensions and an insufficiently compact structure. This not only increases manufacturing costs and tower top placement difficulties but also reduces system rigidity and stability. Furthermore, existing gearboxes have poor maintainability, requiring disassembly for lubrication, which is inconvenient. Therefore, a multi-stage noise-reducing compact wind turbine gearbox is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a multi-stage noise-reducing compact wind turbine gearbox that can effectively reduce operating noise, reduce axial size and simplify maintenance process through multi-stage planetary gear transmission, automatic lubrication system and compact structural design, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage noise-reducing compact wind turbine gearbox, comprising a base and a first transmission assembly;

[0007] Base: A second transmission component and a connecting component are installed on the upper right side, and the second transmission component and the connecting component are connected.

[0008] The first transmission assembly includes a support shell, a first transmission shaft, a first bearing, a sun gear, and an internal gear ring. The support shell is fixed to the left end of the upper side of the base. The first transmission shaft is rotatably connected to the left end inside the support shell. The first bearing is mounted on the surface of the first transmission shaft and is fixed to the left end inside the support shell. The sun gear is fixed to the right end of the first transmission shaft. The internal gear ring is located at the right end inside the support shell, and the sun gear is located inside the internal gear ring. A planetary gear assembly is mounted at the right end inside the support shell. The left ends of the planetary gear assembly mesh with both the sun gear and the internal gear ring. The right end of the planetary gear assembly is connected to the second transmission assembly. An oil injection assembly and a reset assembly are mounted on the surface of the support housing, and these two assemblies cooperate with each other. A discharge assembly is installed inside the support housing and is connected to the reset assembly. The base provides stable foundation support. The first transmission assembly receives input power and achieves primary speed reduction and noise reduction through the planetary gear assembly. The meshing design of the sun gear and internal gear ring distributes the load and reduces vibration. The oil injection assembly, reset assembly, and discharge assembly work together to achieve automatic lubrication and reset functions, thereby reducing friction noise, enhancing compactness, and improving reliability.

[0009] Furthermore, the planetary gear assembly includes a connecting rod, a planetary gear carrier, planetary gears, a transmission main gear, and a second bearing. The connecting rod is rotatably connected to the right end inside the support housing, and the planetary gear carrier is fixed to the left end of the connecting rod. Three corresponding planetary gears are rotatably connected to the left side of the planetary gear carrier, and the three planetary gears mesh with the sun gear and the internal gear ring, respectively. The second bearing is mounted on the circumferential surface of the connecting rod and is fixed to the right end inside the support housing. The transmission main gear is fixed to the right end of the connecting rod. By having multiple planetary gears simultaneously mesh with the sun gear and the internal gear ring, power splitting and uniform load distribution are achieved, reducing single-point impact noise. The connecting rod and planetary gear carrier ensure smooth transmission, the second bearing provides support to reduce vibration, and the transmission main gear efficiently transmits power to the next stage, thereby improving transmission efficiency and reducing axial dimensions.

[0010] Furthermore, the second transmission assembly includes a transmission pair gear, a second transmission shaft, a first connecting gear, and a protective cover. Two corresponding protective covers are fixed to the right end of the upper side of the base. Two corresponding first openings are opened on the corresponding inner surfaces of the two protective covers. The second transmission shaft is rotatably connected to the interior of the two first openings. A transmission pair gear is fixed to the left end of the second transmission shaft. The transmission pair gear meshes with the transmission main gear. Both the transmission pair gear and the transmission main gear are located inside the left protective cover. A first connecting gear is fixed to the right end of the second transmission shaft. The first connecting gear is located inside the right protective cover. The meshing of the transmission pair gear and the transmission main gear achieves two-stage speed reduction and reduces noise. The protective cover isolates the gear meshing area, preventing dust intrusion and noise leakage, and enhancing durability. The first connecting gear provides an interface for subsequent connections, ensuring the continuity of power transmission and a compact layout.

[0011] Furthermore, the connecting assembly includes a second connecting gear, a connecting shaft, and a connecting disc. A second opening is provided on the right side of the protective cover on the right side. The connecting shaft is rotatably connected inside the second opening. The left end of the connecting shaft is fixed with the second connecting gear, which meshes with the first connecting gear. The second connecting gear is located inside the protective cover on the right side. The right end of the connecting shaft is fixed with the connecting disc. The final transmission is completed through the meshing of the second connecting gear and the first connecting gear. The connecting disc provides standardized connection points, facilitating quick docking with generators or other equipment and reducing assembly space. The overall design ensures smooth output and reduces vibration and noise at the connection points.

[0012] Furthermore, the oil injection assembly includes a storage tank, a first internal threaded ring, a storage cavity, and an inclined guide plate. The storage cavity is provided inside the shell wall at the upper end of the support shell. The inclined guide plate is fixed inside the storage cavity. Two corresponding connection holes are opened at the upper end of the storage cavity. The first internal threaded ring is fixed inside the connection hole on the left. The storage tank is internally threaded to the storage tank. The storage tank can be detached and installed through the first internal threaded ring for easy maintenance. The inclined guide plate ensures that the lubricating oil flows evenly into the gear meshing area, reducing friction and wear, thereby reducing operating noise and extending the life of the assembly, and supporting the compact design of the gearbox.

[0013] Furthermore, the reset assembly includes a second internal threaded ring, a connecting barrel, a limiting ring, a support plate, a spring, and a connecting post. The connecting barrel is housed inside a connecting hole on the upper right side of the storage cavity. The second internal threaded ring is threaded onto the surface of the connecting barrel and fixed to the surface of the support shell. A limiting ring is fixed to the circumferential surface of the connecting barrel, and the limiting ring is in contact with the upper end of the second internal threaded ring. Two corresponding support plates are located inside the connecting barrel, with a spring fixed between them. A connecting post is fixed to the lower end of the lower support plate. The reset assembly, through the elastic design of the spring and support plates, achieves automatic reset of the discharge rod and controls the lubricating oil release rhythm. The limiting ring and the second internal threaded ring ensure installation stability, prevent lubrication system jamming, thereby ensuring the continuity of noise reduction effect and adapting to reliable operation in a compact space.

[0014] Furthermore, the discharge assembly includes a discharge rod, a guide groove, and a guide hole. A discharge port is located at the lower end of the storage cavity, and a discharge rod is slidably connected inside the discharge port. A guide groove is located on the left end of the surface of the discharge rod, and a guide hole is located at the upper end of the interior of the support shell. The guide hole communicates with the discharge port, and the guide hole corresponds to the guide groove. The upper end of the discharge rod is fixed to the lower end of the connecting column. The discharge rod cooperates with the planetary gear carrier. The discharge assembly precisely controls the lubricating oil flow rate. During use, the planetary gear carrier impacts the discharge rod to discharge oil. The corresponding design of the guide groove and guide hole during oil discharge ensures quantitative oil supply, avoiding excessive or insufficient supply and optimizing the lubrication of the planetary gear set. The discharge rod is linked with the reset assembly to ensure rapid response of the lubrication system, reduce friction noise, and maintain the compact structure of the gearbox.

[0015] Furthermore, a support frame is fixed to the upper right end of the base, and a fixing hole is provided at the upper end of the support frame. A support tube is fixed inside the fixing hole, and the connecting shaft is rotatably connected inside the support tube. The support frame and the support tube provide additional radial support for the connecting shaft, enhance the shaft system rigidity, reduce vibration and deformation during operation, thereby reducing noise and improving transmission accuracy. This design enhances the compactness and stability of the overall structure.

[0016] Furthermore, a connecting flange is fixed to the right end of the connecting plate. The connecting flange has evenly distributed connecting holes on its edge. The connecting flange has a standardized output interface. The evenly distributed connecting holes enable a quick and stable connection, reducing assembly time and space occupation. It ensures the concentricity of power transmission, minimizes impact and noise at the connection point, and improves the applicability and compactness of the gearbox.

[0017] Furthermore, four corresponding mounting holes are provided at the four corners of the base, and a reinforcing ring is fixed inside the mounting hole. The reinforcing ring enhances the mechanical strength of the base mounting point, prevents bolts from loosening or the base from deforming, and ensures that the gearbox remains stable during high-speed operation. This helps to reduce the overall vibration transmission, supports the noise reduction target, and adapts to the compact installation requirements in harsh environments.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This multi-stage noise-reducing compact wind turbine gearbox has the following advantages:

[0019] 1. Through the innovative layout of the planetary gear assembly and the coordinated operation of the multi-stage transmission system, vibration and noise control during operation are effectively achieved. During transmission, the planetary gears distribute the load through multiple meshing points. Combined with the sound insulation design of the protective cover, the structural noise and airborne noise generated by gear meshing are significantly reduced. At the same time, the automatic lubrication system can continuously provide an appropriate amount of lubricating oil to the gear pair, reducing friction noise sources, thereby enabling the gearbox to maintain a low noise level during long-term operation and meet environmental protection requirements.

[0020] 2. By adopting a highly integrated transmission chain layout and compact housing structure, multi-stage speed increase function is achieved within a limited space; by rationally configuring the combination of planetary gear train and parallel shaft gear, the power transmission path is optimized and the axial dimension is shortened; the reinforced design of the support structure and base further enhances the overall rigidity, enabling the gearbox to remain stable under high torque loads, which is particularly suitable for the space-constrained wind turbine tower top installation environment and improves the flexibility of system layout.

[0021] 3. Through the cooperation of the oil injection component and the reset component, the automatic quantitative supply and discharge control of lubricating oil is realized, eliminating the need for frequent disassembly and maintenance; the modular component design makes key components such as planetary gear carriers and drive shafts easy to inspect and replace, greatly reducing downtime and maintenance costs; this design not only improves the reliability and service life of the gearbox, but also provides convenience for wind farm operation, which is in line with the development trend of intelligent and low-maintenance wind power equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front structure of the present invention.

[0023] Figure 2 This is a front sectional view of the present invention.

[0024] Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 This is a top sectional view of the present invention.

[0026] Figure 5This is a cross-sectional view of the right side of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Base; 2. First transmission assembly; 21. Support shell; 22. First transmission shaft; 23. First bearing; 24. Sun gear; 25. Internal gear ring; 3. Planetary gear assembly; 31. Connecting rod; 32. Planetary gear carrier; 33. Planetary gear; 34. Transmission main gear; 35. Second bearing; 4. Second transmission assembly; 41. Transmission auxiliary gear; 42. Second transmission shaft; 43. First connecting gear; 44. Protective cover; 5. Connecting assembly; 51. Second connecting gear 52. Connecting shaft; 53. Connecting disc; 6. Oil injection assembly; 61. Storage tank; 62. First internal threaded ring; 63. Storage cavity; 64. Angled guide plate; 7. Reset assembly; 71. Second internal threaded ring; 72. Connecting tank; 73. Limiting ring; 74. Support disc; 75. Spring; 76. Connecting column; 8. Discharge assembly; 81. Discharge rod; 82. Guide groove; 83. Guide hole; 9. Support frame; 10. Support pipe; 11. Connecting flange; 12. Reinforcing ring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-5 This embodiment provides a technical solution: a multi-stage noise-reducing compact wind turbine gearbox, including a base 1 and a first transmission component 2;

[0031] Base 1: A second transmission assembly 4 and a connecting assembly 5 are installed on the upper right side. The second transmission assembly 4 and the connecting assembly 5 are connected. The second transmission assembly 4 includes a transmission pair gear 41, a second transmission shaft 42, a first connecting gear 43, and a protective cover 44. Two corresponding protective covers 44 are fixed on the upper right side of base 1. Two corresponding first openings are opened on the corresponding inner surfaces of the two protective covers 44. The second transmission shaft 42 is rotatably connected inside the two first openings. The transmission pair gear 41 is fixed on the left end of the second transmission shaft 42. The transmission pair gear 41 meshes with the transmission main gear 34. Both the transmission pair gear 41 and the transmission main gear 34 are located inside the left protective cover 44. The first connecting gear 43 is fixed on the right end of the second transmission shaft 42. The first connecting gear 43 is located inside the right protective cover 44. The connecting assembly 5 includes a second connecting gear 51, a connecting shaft 52, and a connecting disc 53. The protective cover 44 has a second opening on its right side, and a connecting shaft 52 is rotatably connected inside the second opening. A second connecting gear 51 is fixed to the left end of the connecting shaft 52. The second connecting gear 51 meshes with the first connecting gear 43. The second connecting gear 51 is located inside the protective cover 44 on the right side. A connecting disc 53 is fixed to the right end of the connecting shaft 52. The final transmission is completed through the meshing of the second connecting gear 51 and the first connecting gear 43. The connecting disc 53 provides standardized connection points, which facilitates quick docking with generators or other equipment and reduces assembly space. The overall design ensures smooth output and reduces vibration and noise at the connection point. The meshing of the transmission auxiliary gear 41 and the transmission main gear 34 achieves two-stage reduction and reduces noise. The protective cover 44 isolates the gear meshing area to prevent dust intrusion and noise leakage, and enhances durability. The first connecting gear 43 provides an interface for subsequent connections, ensuring the continuity of power transmission and a compact layout.

[0032] The first transmission assembly 2 includes a support shell 21, a first transmission shaft 22, a first bearing 23, a sun gear 24, and an internal gear ring 25. The support shell 21 is fixed to the left end of the upper side of the base 1. The first transmission shaft 22 is rotatably connected to the left end inside the support shell 21. The first bearing 23 is mounted on the surface of the first transmission shaft 22 and is fixed to the left end inside the support shell 21. The sun gear 24 is fixed to the right end of the first transmission shaft 22. The internal gear ring 25 is located at the right end inside the support shell 21, with the sun gear 24 inside the internal gear ring 25. A planetary gear assembly 3 is installed at the right end inside the support shell 21. The left end of the planetary gear assembly 3 meshes with both the sun gear 24 and the internal gear ring 25. The right end of the planetary gear assembly 3 is connected to the second transmission assembly. The components 4 are connected. An oil injection assembly 6 and a reset assembly 7 are mounted on the surface of the support shell 21, and the oil injection assembly 6 and the reset assembly 7 cooperate with each other. A discharge assembly 8 is installed inside the support shell 21 and is connected to the reset assembly 7. The planetary gear assembly 3 includes a connecting rod 31, a planetary gear carrier 32, planetary gears 33, a transmission main gear 34, and a second bearing 35. The connecting rod 31 is rotatably connected to the right end inside the support shell 21, and the planetary gear carrier 32 is fixed to the left end of the connecting rod 31. Three corresponding planetary gears 33 are rotatably connected to the left side of the planetary gear carrier 32. The three planetary gears 33 mesh with the sun gear 24 and the internal gear ring 25 respectively. A second bearing 35 is mounted on the circumferential surface of the connecting rod 31 and is fixed to the support shell 21. Inside the right end of the connecting rod 31, a transmission main gear 34 is fixed to the right end. The oil filling assembly 6 includes a storage tank 61, a first internal threaded ring 62, a storage cavity 63, and an inclined guide plate 64. The storage cavity 63 is provided inside the shell wall at the upper end of the support shell 21. The inclined guide plate 64 is fixed inside the storage cavity 63. Two corresponding connecting holes are opened at the upper end of the storage cavity 63. The first internal threaded ring 62 is fixed inside the connecting hole on the left side. The storage tank 61 is threadedly connected to the inside of the first internal threaded ring 62. The reset assembly 7 includes a second internal threaded ring 71, a connecting tank 72, a limiting ring 73, a support plate 74, a spring 75, and a connecting post 76. The connecting hole opened on the right side of the upper end of the storage cavity 63 is provided inside the connecting tank 72. The surface of the support shell 21 is threaded with a second internal threaded ring 71, which is fixed to the surface of the support shell 21. A limit ring 73 is fixed on the circumferential surface of the connecting barrel 72, and the limit ring 73 fits against the upper end of the second internal threaded ring 71. The interior of the connecting barrel 72 is provided with two corresponding support plates 74, and a spring 75 is fixed between the two support plates 74. A connecting post 76 is fixed to the lower end of the lower support plate 74. The discharge assembly 8 includes a discharge rod 81, a guide groove 82, and a guide hole 83. The lower end of the storage cavity 63 is provided with a discharge port, and the discharge rod 81 is slidably connected inside the discharge port. The left end of the surface of the discharge rod 81 is provided with a guide groove 82, and the upper end of the support shell 21 is provided with a guide hole 83, which communicates with the discharge port.The guide hole 83 and the guide groove 82 correspond to each other. The upper end of the discharge rod 81 is fixed to the lower end of the connecting column 76. The discharge rod 81 cooperates with the planetary gear carrier 32. The discharge assembly 8 precisely controls the flow rate of lubricating oil. When in use, the planetary gear carrier 32 strikes the discharge rod 81 to discharge oil. During oil discharge, the corresponding design of the guide groove 82 and the guide hole 83 achieves quantitative oil supply, avoiding excessive or insufficient supply and optimizing the lubrication of the planetary gear set. The discharge rod 81 is linked with the reset assembly 7 to ensure rapid response of the lubrication system, reduce friction noise, and maintain the compact structure of the gearbox. The reset assembly 7 achieves automatic reset of the discharge rod 81 through the elastic design of the spring 75 and the support plate 74, controlling the rhythm of lubricating oil release. The limit ring 73 and the second internal thread ring 71 ensure installation stability and prevent the lubrication system from jamming, thereby ensuring the continuity of noise reduction effect and adapting to reliable operation in a compact space. The storage tank 61 is detachable and installable through the first internal thread ring 62, which facilitates installation. Maintenance; the inclined guide plate 64 ensures that lubricating oil flows evenly into the gear meshing area, reducing friction and wear, thereby reducing operating noise and extending component life, supporting the compact design of the gearbox. Multiple planetary gears 33 simultaneously mesh with the sun gear 24 and internal ring gear 25 to achieve power distribution and even load distribution, reducing single-point impact noise; the connecting rod 31 and planetary gear carrier 32 ensure smooth transmission; the second bearing 35 provides support to reduce vibration; the main transmission gear 34 efficiently transmits power to the next stage, thereby improving transmission efficiency and reducing axial dimensions; the base 1 provides stable foundation support; the first transmission component 2 receives input power and achieves primary deceleration and noise reduction through the planetary gear component 3; the meshing design of the sun gear 24 and internal ring gear 25 distributes the load and reduces vibration; the oil injection component 6, reset component 7, and discharge component 8 work together to achieve automatic lubrication and reset functions, thereby reducing friction noise, enhancing compactness, and improving reliability.

[0033] Specifically: a support frame 9 is fixed to the right end of the upper side of the base 1. A fixing hole is provided at the upper end of the support frame 9. A support tube 10 is fixed inside the fixing hole. The connecting shaft 52 is rotatably connected inside the support tube 10. The support frame 9 and the support tube 10 provide additional radial support for the connecting shaft 52, enhance the rigidity of the shaft system, reduce vibration and deformation during operation, thereby reducing noise and improving transmission accuracy. This design enhances the compactness and stability of the overall structure.

[0034] Among them: the right end of the connecting plate 53 is fixed with a connecting flange 11, and the edge of the connecting flange 11 is provided with evenly distributed connecting holes. The connecting flange 11 has a standardized output interface. The evenly distributed connecting holes enable a fast and stable connection, reducing assembly time and space occupation. It ensures the concentricity of power transmission, minimizes the impact and noise at the connection point, and improves the applicability and compactness of the gearbox.

[0035] The base 1 has four corresponding mounting holes at its four corners. Reinforcing rings 12 are fixed inside the mounting holes. The reinforcing rings 12 enhance the mechanical strength of the mounting points of the base 1, prevent bolts from loosening or the base from deforming, and ensure that the gearbox remains stable during high-speed operation. This helps to reduce the overall vibration transmission, supports the noise reduction target, and adapts to the compact installation requirements in harsh environments.

[0036] The working principle of the multi-stage noise-reducing compact wind turbine gearbox provided by this invention is as follows: Power is first input through the first transmission shaft 22, driving the sun gear 24 to rotate. The sun gear 24 drives the three planetary gears 33 in the planetary gear assembly 3 to mesh within the internal gear ring 25, achieving primary speed reduction and load distribution, thereby reducing vibration and noise. The planetary gear carrier 32 transmits power to the main transmission gear 34 through the connecting rod 31. The main transmission gear 34 meshes with the secondary transmission gear 41 in the second transmission assembly 4 for secondary speed reduction, further reducing the speed and enhancing transmission smoothness. The second transmission shaft 42 transmits power to the first connecting gear 43, and then, through the second connecting gear 51 and the connecting shaft 52 of the connecting assembly 5, finally outputs power to the connecting plate 53 or the connecting flange 11, facilitating connection with the power generation system. The system is designed for machine docking. Throughout the process, the oiling assembly 6 stores lubricating oil through the storage tank 61 and storage cavity 63, while the inclined guide plate 64 ensures uniform oil flow. The discharge rod 81 of the discharge assembly 8 interacts with the planetary gear carrier 32. When the planetary gear carrier 32 moves, it impacts the discharge rod 81, aligning the guide groove 82 with the guide hole 83 to release a metered amount of lubricating oil, reducing friction and wear. The spring 75 and support plate 74 of the reset assembly 7 ensure that the discharge rod 81 automatically resets after lubrication, maintaining continuous system operation. The base 1 enhances stability through the reinforcing ring 12, and the support frame 9 and support tube 10 provide additional support for the connecting shaft 52, reducing vibration transmission. The overall design achieves efficient noise reduction and reliable operation within a compact structure through multi-stage gear meshing, protective cover 44 isolation, and automatic lubrication mechanism.

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A multi-stage noise-reducing compact wind turbine gearbox, characterized in that: Includes a base (1) and a first transmission assembly (2); Base (1): The upper right end is equipped with a second transmission component (4) and a connecting component (5), which are connected together; First transmission assembly (2): includes a support shell (21), a first transmission shaft (22), a first bearing (23), a sun gear (24), and an internal gear ring (25). The support shell (21) is fixed to the left end of the upper side of the base (1). The first transmission shaft (22) is rotatably connected to the left end inside the support shell (21). The first bearing (23) is mounted on the surface of the first transmission shaft (22). The first bearing (23) is fixed to the left end inside the support shell (21). The sun gear (24) is fixed to the right end of the first transmission shaft (22). The internal gear ring (25) is provided at the right end inside the support shell (21). The sun gear (24) is located inside the internal gear ring (25). A planetary gear assembly (3) is installed on the right end of the support shell (21). The left end of the planetary gear assembly (3) meshes with the sun gear (24) and the internal gear ring (25) respectively. The right end of the planetary gear assembly (3) is connected to the second transmission assembly (4). An oil injection assembly (6) and a reset assembly (7) are installed on the surface of the support shell (21). The oil injection assembly (6) and the reset assembly (7) cooperate with each other. A discharge assembly (8) is installed inside the support shell (21). The discharge assembly (8) is connected to the reset assembly (7).

2. The multi-stage noise-reducing compact wind turbine gearbox according to claim 1, characterized in that: The planetary gear assembly (3) includes a connecting rod (31), a planetary gear carrier (32), planetary gears (33), a transmission main gear (34), and a second bearing (35). The connecting rod (31) is rotatably connected to the right end inside the support shell (21). The planetary gear carrier (32) is fixed to the left end of the connecting rod (31). Three corresponding planetary gears (33) are rotatably connected to the left side of the planetary gear carrier (32). The three planetary gears (33) mesh with the sun gear (24) and the internal gear ring (25) respectively. The second bearing (35) is installed on the circumferential surface of the connecting rod (31). The second bearing (35) is fixed to the right end inside the support shell (21). The transmission main gear (34) is fixed to the right end of the connecting rod (31).

3. The multi-stage noise-reducing compact wind turbine gearbox according to claim 2, characterized in that: The second transmission assembly (4) includes a transmission pair gear (41), a second transmission shaft (42), a first connecting gear (43), and a protective cover (44). Two corresponding protective covers (44) are fixed on the right side of the upper side of the base (1). Two corresponding first openings are opened on the corresponding inner surfaces of the two protective covers (44). The second transmission shaft (42) is rotatably connected inside the two first openings. The transmission pair gear (41) is fixed on the left side of the second transmission shaft (42). The transmission pair gear (41) meshes with the transmission main gear (34). The transmission pair gear (41) and the transmission main gear (34) are both located inside the left protective cover (44). The first connecting gear (43) is fixed on the right side of the second transmission shaft (42). The first connecting gear (43) is located inside the right protective cover (44).

4. The multi-stage noise-reducing compact wind turbine gearbox according to claim 3, characterized in that: The connecting assembly (5) includes a second connecting gear (51), a connecting shaft (52) and a connecting disc (53). A second opening is provided on the right side of the protective cover (44) on the right side. The connecting shaft (52) is rotatably connected inside the second opening. The second connecting gear (51) is fixed to the left end of the connecting shaft (52). The second connecting gear (51) meshes with the first connecting gear (43). The second connecting gear (51) is located inside the protective cover (44) on the right side. The connecting disc (53) is fixed to the right end of the connecting shaft (52).

5. A multi-stage noise-reducing compact wind turbine gearbox according to claim 2, characterized in that: The oil injection assembly (6) includes a storage tank (61), a first internal threaded ring (62), a storage cavity (63), and an inclined guide plate (64). The storage cavity (63) is provided inside the shell wall at the upper end of the support shell (21). An inclined guide plate (64) is fixed inside the storage cavity (63). Two corresponding connecting holes are opened at the upper end of the storage cavity (63). The first internal threaded ring (62) is fixed inside the connecting hole on the left side. The storage tank (61) is threadedly connected to the inside of the first internal threaded ring (62).

6. A multi-stage noise-reducing compact wind turbine gearbox according to claim 5, characterized in that: The reset assembly (7) includes a second internal threaded ring (71), a connecting barrel (72), a limiting ring (73), a support plate (74), a spring (75), and a connecting post (76). The connecting barrel (72) is provided inside the connecting hole on the upper right side of the storage cavity (63). The second internal threaded ring (71) is threadedly connected to the surface of the connecting barrel (72). The second internal threaded ring (71) is fixed to the surface of the support shell (21). A limiting ring (73) is fixed on the circumferential surface of the connecting barrel (72). The limiting ring (73) is in contact with the upper end of the second internal threaded ring (71). Two corresponding support plates (74) are provided inside the connecting barrel (72). A spring (75) is fixed between the two support plates (74). A connecting post (76) is fixed at the lower end of the lower support plate (74).

7. A multi-stage noise-reducing compact wind turbine gearbox according to claim 6, characterized in that: The discharge assembly (8) includes a discharge rod (81), a guide groove (82), and a guide hole (83). The lower end of the storage cavity (63) is provided with a discharge port. The discharge rod (81) is slidably connected inside the discharge port. The left end of the surface of the discharge rod (81) is provided with a guide groove (82). The upper end of the support shell (21) is provided with a guide hole (83). The guide hole (83) communicates with the discharge port. The guide hole (83) corresponds to the guide groove (82). The upper end of the discharge rod (81) is fixed to the lower end of the connecting column (76). The discharge rod (81) cooperates with the planetary gear carrier (32).

8. A multi-stage noise-reducing compact wind turbine gearbox according to claim 4, characterized in that: A support frame (9) is fixed to the right end of the upper side of the base (1). A fixing hole is provided at the upper end of the support frame (9). A support tube (10) is fixed inside the fixing hole. The connecting shaft (52) is rotatably connected inside the support tube (10).

9. A multi-stage noise-reducing compact wind turbine gearbox according to claim 4, characterized in that: A connecting flange (11) is fixed to the right end of the connecting plate (53), and the connecting flange (11) has evenly distributed connecting holes on its edge.

10. A multi-stage noise-reducing compact wind turbine gearbox according to claim 1, characterized in that: The base (1) has four corresponding mounting holes at its four corners, and a reinforcing ring (12) is fixed inside the mounting holes.

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