Planetary transmission structure of a wind turbine gear box

Abstract

This utility model discloses a planetary transmission structure for a wind turbine gearbox, relating to the field of wind turbine gearbox technology. It includes a gearbox housing, which is a cylindrical structure. A gearbox base is located at the bottom of the gearbox housing, and hexagonal bolts are mounted on the surface of the gearbox base. A power supply box is located at the top of the outer wall of the gearbox housing and is fixed to the top surface of the outer wall. A temperature sensor and a noise sensor are installed inside the power supply box. This utility model, by installing a power supply box at the top of the outer wall of the gearbox housing and fixing it to the top surface of the outer wall, and by installing temperature and noise sensors inside the power supply box, allows for the monitoring of the temperature and noise levels on the surface of the gearbox housing, thus improving the accuracy of the gearbox housing.

Description

Technical Field

[0001] This utility model relates to the field of wind power gearbox technology, specifically to a planetary transmission structure for a wind power gearbox. Background Technology

[0002] The wind turbine gearbox is a core mechanical component of a wind turbine generator set. Its main function is to transmit the low-speed rotational power generated by the wind turbine under wind force to the generator, and to increase the rotational speed to the high speed required by the generator through the speed increase effect of the gear pair (usually the wind turbine speed is much lower than the generator's required speed), hence it is also called a speed increaser. Its performance directly affects the generator set's power generation efficiency, reliability, and service life. It is a recognized weak link in the transmission system and is also one of the components with high technical content and a high failure rate.

[0003] Currently, during actual operation, wind turbine gearboxes generate high temperatures on their surface, which can affect their service life. Therefore, it is necessary to provide a planetary transmission structure for wind turbine gearboxes with temperature monitoring. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a planetary transmission structure for wind turbine gearboxes to solve the technical problem that the surface of wind turbine gearboxes generates high temperatures during actual operation, which can easily affect the service life of wind turbine gearboxes.

[0005] To achieve the above objectives, this utility model employs the following technical solution: A planetary transmission structure for a wind turbine gearbox includes a gearbox housing, which is configured as a cylindrical structure. A gearbox base is provided at the bottom end of the gearbox housing, and hexagonal bolts are installed on the surface of the gearbox base. A power supply box is provided at the top of the outer wall of the gearbox housing, and the power supply box is fixed to the top surface of the outer wall of the gearbox housing. A temperature sensor and a noise sensor are provided inside the power supply box.

[0006] As a preferred embodiment of this utility model, an input shaft is provided at one end of the outer wall of the gearbox housing, and an output shaft is provided at the other end of the outer wall of the gearbox housing. The input shaft and the output shaft are coaxially fixed.

[0007] As a preferred technical solution of this utility model, a transmission cavity is provided inside the gearbox housing, the input shaft extends into the transmission cavity, and a sun gear is provided at the top end of the input shaft extending into the transmission cavity.

[0008] As a preferred technical solution of this utility model, a rotating frame is provided at the top of the output shaft that extends into the transmission cavity. Four rotating shafts are arranged at equal intervals around the circumference on the surface of the rotating frame, and a planetary gear is rotatably connected to the surface of each rotating shaft.

[0009] As a preferred embodiment of this utility model, the inner wall of the transmission cavity is provided with an internal gear ring, and the four planetary gears are respectively rotatably connected between the sun gear and the internal gear ring.

[0010] This invention features a power supply box fixed to the top surface of the outer wall of the gearbox housing. The power supply box contains a temperature sensor and a noise sensor, which can monitor the temperature and noise levels on the surface of the gearbox housing, thereby improving the accuracy of the gearbox housing.

[0011] This utility model has an input shaft provided at one end of the outer wall of the gearbox housing, and an output shaft provided at the other end of the outer wall of the gearbox housing, with the input shaft and output shaft fixed coaxially.

[0012] The gearbox housing has a transmission cavity inside, the input shaft extends into the transmission cavity, and a sun gear is provided at the top of the input shaft extending into the transmission cavity.

[0013] The top of the output shaft, which extends into the transmission cavity, is provided with a rotating frame. The surface of the rotating frame is provided with four rotating shafts at equal intervals around the circumference. Each rotating shaft is rotatably connected to a planetary gear.

[0014] The inner wall of the transmission cavity is provided with an internal gear ring, and the four planetary gears are respectively rotatably connected between the sun gear and the internal gear ring to achieve speed regulation, thereby improving the conversion and utilization rate of wind power.

[0015] 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

[0016] Figure 1 This is a schematic diagram of the external structure of the planetary transmission structure of the wind turbine gearbox of this utility model; Figure 2 This is a front view schematic diagram of the planetary transmission structure of the wind turbine gearbox of this utility model; Figure 3 This is a front cross-sectional view of the planetary transmission structure of the wind turbine gearbox of this utility model. In the diagram: 1. Gearbox housing; 2. Rotary gear carrier; 3. Planetary gear; 4. Rotary shaft; 5. Sun gear; 6. Input shaft; 7. Hex bolt; 8. Internal gear ring; 9. Gearbox base; 10. Power supply box; 11. Output shaft; 12. Transmission chamber. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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

[0022] Please see Figure 1-3This invention provides a technical solution for a planetary transmission structure of a wind turbine gearbox, comprising a gearbox housing 1, which is a cylindrical structure. A gearbox base 9 is located at the bottom of the gearbox housing 1, and hexagonal bolts 7 are mounted on the surface of the gearbox base 9. A power supply box 10 is located at the top of the outer wall of the gearbox housing 1, and is fixed to the top surface of the outer wall of the gearbox housing 1. A temperature sensor and a noise sensor are installed inside the power supply box 10, and are in close contact with the surface of the gearbox housing 1, thereby enabling more effective detection of the temperature and noise on the surface of the gearbox housing 1. The temperature sensor and noise sensor are currently widely used in various fields, and their structure and the way they are connected in close contact with the surface of the gearbox housing 1 are well-known technologies in the field.

[0023] Specifically, in this embodiment, the present invention provides a power supply box at the top of the outer wall of the gearbox housing. The power supply box is fixed to the top surface of the outer wall of the gearbox housing. The power supply box contains a temperature sensor and a noise sensor. The temperature and noise of the gearbox housing surface can be monitored by the temperature sensor and the noise coefficient of the gearbox housing surface, thereby improving the accuracy of the gearbox housing.

[0024] An input shaft 6 is provided at one end of the outer wall of the gearbox housing 1, and an output shaft 11 is provided at the other end of the outer wall of the gearbox housing 1. The input shaft 6 and the output shaft 11 are coaxially fixed.

[0025] The gearbox housing 1 has a transmission cavity 12 inside, and the input shaft 6 extends into the transmission cavity 12. The top of the input shaft 6 extending into the transmission cavity 12 is provided with a sun gear 5.

[0026] The top end of the output shaft 11, which extends into the transmission cavity 12, is provided with a rotating frame 2. Four rotating shafts 4 are arranged at equal intervals around the circumference on the surface of the rotating frame 2. Each rotating shaft 4 is rotatably connected to a planetary gear 3.

[0027] The inner wall of the transmission cavity 12 is provided with an internal gear ring 8, and four planetary gears 3 are rotatably connected between the sun gear 5 and the internal gear ring 8.

[0028] Specifically, in this embodiment, the present invention has an input shaft provided at one end of the outer wall of the gearbox housing and an output shaft provided at the other end of the outer wall of the gearbox housing, with the input shaft and output shaft being coaxially fixed.

[0029] The gearbox housing has a transmission cavity inside, the input shaft extends into the transmission cavity, and a sun gear is installed at the top of the input shaft extending into the transmission cavity.

[0030] The top of the output shaft, which extends into the transmission cavity, is equipped with a rotating frame. Four rotating shafts are arranged at equal intervals around the circumference on the surface of the rotating frame, and a planetary gear is rotatably connected to the surface of each rotating shaft.

[0031] 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 planetary transmission structure for a wind turbine gearbox, comprising a gearbox housing (1), characterized in that: The gearbox housing (1) is configured as a cylindrical structure. A gearbox base (9) is provided at the bottom of the gearbox housing (1). Hexagonal bolts (7) are installed on the surface of the gearbox base (9). A power supply box (10) is provided at the top of the outer wall of the gearbox housing (1). The power supply box (10) is fixed at the top surface of the outer wall of the gearbox housing (1). A temperature sensor and a noise sensor are provided inside the power supply box (10).

2. The planetary transmission structure of a wind turbine gearbox according to claim 1, characterized in that: An input shaft (6) is provided at one end of the outer wall of the gearbox housing (1), and an output shaft (11) is provided at the other end of the outer wall of the gearbox housing (1). The input shaft (6) and the output shaft (11) are fixed coaxially.

3. The planetary transmission structure of a wind turbine gearbox according to claim 2, characterized in that: The gearbox housing (1) has a transmission cavity (12) inside, and the input shaft (6) extends into the transmission cavity (12). The top of the input shaft (6) extending into the transmission cavity (12) is provided with a sun gear (5).

4. The planetary transmission structure of a wind turbine gearbox according to claim 3, characterized in that: The top end of the output shaft (11) extending into the transmission cavity (12) is provided with a rotating frame (2). The surface of the rotating frame (2) is provided with four rotating shafts (4) at equal intervals around the circumference. Each rotating shaft (4) is rotatably connected to a planetary gear (3).

5. The planetary transmission structure of a wind turbine gearbox according to claim 4, characterized in that: The inner wall of the transmission cavity (12) is provided with an internal gear ring (8), and the four planetary gears (3) are respectively rotatably connected between the sun gear (5) and the internal gear ring (8).

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