Lightweight wind turbine gearbox planet carrier structure

Abstract

The utility model belongs to the technical field of wind power generation equipment, specifically disclose a kind of lightweight wind power gear box planet carrier structure, front frame body and rear frame body are irregular similar triangular plate structure, several struts are arranged at interval between front frame body and rear frame body, three planet wheel shaft holes are arranged on the rear frame body and are evenly spaced along its circumferential direction, and the position corresponding to the planet wheel shaft hole on the rear end surface of the front frame body is respectively provided with recessed planet wheel shaft groove, the planet wheel shaft hole and planet wheel shaft groove coaxially arranged for installing planet wheel shaft, the struts and planet wheel shaft hole are arranged in 60 ° annular staggered, recessed circular recess is respectively provided on the outer periphery of sun wheel through hole on the front end surface of front frame body and rear end surface of rear frame body, this structure not only can reduce weight, also can eliminate local stress, make the structure of planet carrier safe and reliable, on the basis of guaranteeing overall strength, reduce the amount of material used, reduce material cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of wind power generation equipment, and specifically discloses a lightweight wind turbine gearbox planetary carrier structure. Background Technology

[0002] Wind energy, as a clean and renewable green energy source, is a key force driving the global green energy transition. To improve wind energy utilization, wind turbines are increasingly being developed towards larger sizes and higher efficiency, which places higher demands on the gearboxes within these turbines.

[0003] As a key component in the transmission chain of wind turbine gearboxes, the performance of the planetary carrier affects the overall operating efficiency and reliability of the gearbox. Lightweight planetary carriers can reduce the overall weight of the gearbox, save on operation and maintenance costs, make the axial space more compact, improve casting performance, and achieve higher economic benefits. Summary of the Invention

[0004] To address the problems in the background art, this utility model discloses a lightweight planetary carrier structure for wind turbine gearboxes, which meets the needs of the wind energy industry development, improves the performance and reliability of wind turbine gearboxes, reduces manufacturing costs, and lightens the weight of the planetary carrier.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A lightweight wind turbine gearbox planetary carrier structure includes a front carrier and a rear carrier forming cavities for assembling planetary gears. Both the front and rear carriers are irregular triangular plate-like structures. Several support beams are spaced circumferentially between the front and rear carriers. Sun gear through holes for matching with sun gears are respectively opened in the middle of the front and rear carriers. Three planetary gear shaft holes penetrating the front and rear end faces are evenly spaced circumferentially on the rear carrier. Recessed planetary gear shaft grooves are respectively provided on the rear end face of the front carrier at positions corresponding to the planetary gear shaft holes. The planetary gear shaft holes and planetary gear shaft grooves are coaxially arranged for installing planetary gear shafts. The support beams and planetary gear shaft holes are arranged in a 60° annular staggered pattern. Recessed circular platforms are respectively provided around the sun gear through holes on the front end face of the front carrier and the rear end face of the rear carrier.

[0006] Furthermore, the lightweight wind turbine gearbox planetary carrier structure has complete arcs at the planetary gear arrangement points on the front and rear frames and at the outer contour of the support beams, with linear transition connections between adjacent arcs.

[0007] Furthermore, in the lightweight wind turbine gearbox planetary carrier structure, the recessed platform is a non-circular structure surrounding the branch beam and planetary gear shaft hole or planetary gear shaft groove.

[0008] Furthermore, in the lightweight wind turbine gearbox planetary carrier structure, the cross-section of the support beam is trapezoidal, and rounded corners are provided at the connection points between the support beam and the front and rear frames.

[0009] Furthermore, the lightweight wind turbine gearbox planetary carrier structure has weight-reducing holes that penetrate the front and rear ends of the support beams. Several reinforcing ribs are spaced axially within the weight-reducing holes of the support beams. The two ends of the reinforcing ribs are connected to the inner and outer end faces of the support beams. A reinforcing rib through hole is provided in the middle of the reinforcing ribs along its axial direction. The reinforcing rib through hole penetrates the inner and outer end faces of the support beams and the reinforcing ribs.

[0010] Furthermore, the lightweight wind turbine gearbox planetary carrier structure has ventilation holes that penetrate the front end face of the front frame at the bottom of the planetary gear shaft groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a lightweight planetary carrier structure for wind turbine gearboxes, comprising a front carrier body, a rear carrier body, and a support beam. The front and rear carrier bodies of the planetary carrier adopt a non-circular shape. This structure not only reduces weight but also eliminates local stress, making the planetary carrier structure safe and reliable. While ensuring overall strength, it reduces the amount of materials used and lowers material costs. At the same time, due to the reduced weight, the manpower, material resources, and time costs required for transportation, installation, and maintenance are also reduced accordingly, thus improving economic efficiency. This utility model discloses a lightweight planetary carrier structure for wind turbine gearboxes. A reinforcing rib is provided in the middle of the support beam. The reinforcing rib not only ensures that the strength of the planetary carrier is not affected while reducing its weight, but also provides sufficient lubrication for the planetary gear train through the through holes in the reinforcing rib, thereby improving transmission efficiency and ensuring transmission stability. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the lightweight wind turbine gearbox planetary carrier structure of this utility model; Figure 2 This is a rear view schematic diagram of the lightweight wind turbine gearbox planetary carrier structure of this utility model; Figure 3 This is a side view schematic diagram of the lightweight wind turbine gearbox planetary carrier structure of this utility model; In the above figure: 1-front frame; 11-recess one; 12-planetary gear shaft groove; 13-vent hole; 2-rear frame; 21-recess two; 22-planetary gear shaft hole; 3-support beam; 31-support beam weight reduction hole; 4-reinforcing rib; 41-reinforcing rib through hole; 5-sun gear through hole. Detailed Implementation

[0013] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0014] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0016] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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" and "second" are only used for distinction in description and have no special meaning.

[0017] Combined with appendix Figure 1-3This invention details a lightweight planetary carrier structure for a wind turbine gearbox, comprising a front carrier 1 and a rear carrier 2 forming cavities for assembling planetary gears. Both the front carrier 1 and the rear carrier 2 are irregular, triangular-like plate structures. The rear carrier 2 has the same outline as the front carrier 1 but a different thickness. Several support beams 3 are circumferentially spaced between the front carrier 1 and the rear carrier 2. Sun gear through holes 5 for matching with the sun gear are respectively opened in the middle of the front carrier 1 and the rear carrier 2. Three planetary gear shaft holes 22 are evenly spaced along the circumference of the rear carrier 2, penetrating its front and rear end faces. Recessed planetary gear shaft grooves 12 are respectively provided on the rear end face of the front carrier 1 at positions corresponding to the planetary gear shaft holes 22. The planetary gear shaft holes 22 and the planetary gear shaft grooves 12 are coaxially arranged. For mounting planetary gear shafts, the support beam 3 and the planetary gear shaft hole 22 are arranged in a 60° annular staggered pattern. A recessed circular platform 11 is provided around the sun gear through hole 5 on the front end face of the front frame 1, and a recessed circular platform 21 is provided around the sun gear through hole 5 on the rear end face of the rear frame 2. Weight-reducing platforms and support beam weight-reducing through holes are arranged on the front frame 1 and the rear frame 2. The lightweight wind turbine gearbox planetary carrier structure of this utility model can reduce the weight of the planetary carrier while eliminating local stress without affecting the overall strength. On the basis of ensuring the overall strength, the amount of material used is reduced, and the material cost is lowered. At the same time, due to the weight reduction, the manpower, material resources and time costs required in transportation, installation and maintenance are also reduced accordingly, thus improving economic efficiency.

[0018] As an optional design, the lightweight wind turbine gearbox planetary carrier structure is preferred. Complete arcs are left at the planetary gear arrangement points on the front frame 1 and the rear frame 2, as well as at the outer contour of the support beam 3. The remaining parts have partial material removed, and adjacent arcs are linearly connected. This ensures weight reduction while preventing stress concentration, so that the overall strength of the planetary carrier remains unchanged. The structure of the front frame 1 and the rear frame 2 can not only reduce the weight of the planetary carrier, but also eliminate local stress, making the structure of the planetary carrier safe and reliable.

[0019] As an optional design, the lightweight wind turbine gearbox planetary carrier structure is preferred. The recess is a non-circular structure that surrounds the branch beam 3 and the planetary gear shaft hole 22 or planetary gear shaft groove 12, which reduces the weight of the planetary carrier and ensures the overall strength of the planetary carrier.

[0020] As an optional design, the lightweight wind turbine gearbox planetary carrier structure is preferred, with the cross-section of the support beam 3 being trapezoidal, and rounded corners provided at the connection points between the support beam 3 and the front frame 1 and the rear frame 2.

[0021] As an optional design, the lightweight wind turbine gearbox planetary carrier structure is preferred. The support beam 3 has weight-reduction holes 31 penetrating its front and rear ends. Several reinforcing ribs 4 are spaced axially within the weight-reduction holes 31. The two ends of the reinforcing ribs 4 are connected to the inner and outer end faces of the support beam 3, ensuring that the overall structure remains unaffected while reducing the weight of the planetary carrier. A reinforcing rib through-hole 41 is provided in the middle of the reinforcing rib 4, extending axially through the inner and outer end faces of the support beam 3 and the reinforcing rib 4. The reinforcing rib through-hole 41 not only reduces weight but also provides sufficient lubrication for the planetary gear system, improving transmission efficiency, ensuring smooth transmission, and enhancing overall transmission performance.

[0022] As an optional design, the lightweight wind turbine gearbox planetary carrier structure is preferred. Ventilation holes 13 that penetrate the front end face of the front frame 1 are respectively provided at the bottom of the planetary gear shaft groove 12. The diameter of the ventilation holes 13 is much smaller than the size of the planetary gear shaft groove. The ventilation holes 13 can play a role in ventilation and heat dissipation during planetary gear transmission, thereby improving the transmission efficiency of the planetary gear system.

[0023] The above description is only an application implementation of this utility model, but the protection scope of this utility model is not limited thereto and cannot be used to limit the scope of rights of this utility model. Any equivalent changes made according to the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A lightweight planetary carrier structure for a wind turbine gearbox, characterized in that: The device includes a front frame and a rear frame that form cavities for assembling planetary gears. Both the front and rear frames are irregular, triangular-like plate structures. Several support beams are spaced circumferentially between the front and rear frames. Sun gear through holes for matching with the sun gear are respectively opened in the middle of the front and rear frames. Three planetary gear shaft holes penetrating the front and rear ends are evenly spaced circumferentially on the rear frame. Recessed planetary gear shaft grooves are respectively provided on the rear end face of the front frame at positions corresponding to the planetary gear shaft holes. The planetary gear shaft holes and planetary gear shaft grooves are coaxially arranged for installing planetary gear shafts. The support beams and planetary gear shaft holes are arranged in a 60° annular staggered pattern. Recessed circular platforms are respectively provided around the sun gear through holes on the front end face of the front frame and the rear end face of the rear frame.

2. The lightweight wind turbine gearbox planetary carrier structure according to claim 1, characterized in that: Complete arcs are left at the planetary gear arrangement points on the front and rear frames and at the outer contours of the support beams, with linear transition connections between adjacent arcs.

3. The lightweight wind turbine gearbox planetary carrier structure according to claim 1 or 2, characterized in that: A recessed platform is a non-circular structure surrounding the branch beam and the planetary gear shaft hole or planetary gear shaft groove.

4. The lightweight wind turbine gearbox planetary carrier structure according to claim 3, characterized in that: The cross-section of the support beam is trapezoidal, and rounded corners are provided at the connection points between the support beam and the front and rear frames.

5. The lightweight wind turbine gearbox planetary carrier structure according to claim 3, characterized in that: The support beam is provided with weight reduction holes that penetrate its front and rear ends. Several reinforcing ribs are provided axially at intervals in the weight reduction holes. The two ends of the reinforcing ribs are connected to the inner and outer end faces of the support beam. A reinforcing rib through hole is provided in the middle of the reinforcing rib along its axial direction. The reinforcing rib through hole penetrates the inner and outer end faces of the support beam and the reinforcing rib.

6. The lightweight wind turbine gearbox planetary carrier structure according to claim 3, characterized in that: Ventilation holes penetrating the front end face of the front frame are provided at the bottom of the planetary gear shaft groove.

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