Integrated planetary output assembly

Abstract

The utility model relates to a gear box field relates to an integrated planetary output part, it includes box, output gear shaft, planet carrier, inner gear ring, planetary gear and two support bearings, output gear shaft is arranged with planet carrier as integral type structure, output gear shaft is worn in the box, and output gear shaft is rotatably matched with the box through two support bearings, inner gear ring is fixed in the box, and planetary gear is rotatably matched with planet carrier, and planetary gear is engaged with inner gear ring, it can reduce the volume, reduce the weight, reduce the cost, can also reduce the external force that bearing receives, prolong the service life of bearing, reduce the operation maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of gearboxes, and more specifically, to an integrated planetary output assembly. Background Technology

[0002] Yaw and pitch gearboxes typically employ planetary transmission mechanisms to output torque. The output shaft is supported and positioned by two back-to-back tapered roller bearings, and is connected to the planetary carrier via an external spline. To ensure the fit strength between the planetary carrier and the output shaft, a sufficiently long spline groove needs to be machined along the axial direction of the output shaft, and a relief groove is also required. This significantly increases the axial dimension of the output shaft, not only increasing weight, cost, and size, but also resulting in greater wobble during rotation, more complex stress on the tapered roller bearings, and a shorter service life. Utility Model Content

[0003] The objectives of this invention include, for example, providing an integrated planetary output assembly that can reduce size, weight, and cost, as well as reduce the external force on the bearing, extend the bearing's service life, and reduce operating and maintenance costs.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] In a first aspect, this utility model provides an integrated planetary output assembly, comprising:

[0006] The system comprises a housing, an output gear shaft, a planetary carrier, an internal gear ring, planetary gears, and two support bearings. The output gear shaft and the planetary carrier are integrally formed. The output gear shaft passes through the housing and is rotatably engaged with the housing via the two support bearings. The internal gear ring is fixed to the housing, and the planetary gears are rotatably engaged with the planetary carrier, meshing with it.

[0007] In an optional embodiment, the integrated planetary output assembly further includes a limiting member and a pin. The limiting member is sleeved on the output gear shaft and contacts the inner ring of one of the two support bearings to prevent the support bearing from disengaging from the output gear shaft. The pin is connected to the planet carrier, and the planet gear is rotatably mounted on the outside of the pin.

[0008] In an optional embodiment, the pin and the planetary carrier are configured as an integral structure;

[0009] The limiting component is configured as a fixing nut, which is screwed onto the outside of the output gear shaft.

[0010] In an optional embodiment, the pin is fixed to the planetary carrier by screws;

[0011] The limiting component is configured as a pressure plate, which is sleeved on the outside of the output gear shaft. The pressure plate is clamped between the pin and the support bearing, and the pressure plate and the output gear shaft are fixed relative to each other in the axial direction of the output gear shaft; or, the limiting component is configured as a fixing nut, which is screwed on the outside of the output gear shaft and contacts the support bearing.

[0012] In an optional embodiment, the integrated planetary output assembly further includes a skeleton oil seal, which is installed between the limiting member and the housing.

[0013] In an optional embodiment, a weight-reducing hole is provided inside the output gear shaft.

[0014] In an optional embodiment, one end of the weight-reducing hole penetrates the end face of the output gear shaft that extends into the housing;

[0015] The integrated planetary output assembly also includes a baffle plate, which is embedded in the weight reduction hole and is sealed to the hole wall of the weight reduction hole.

[0016] In an optional embodiment, the output gear shaft includes a shaft body and a gear body, the gear body being sleeved on the shaft body and fixedly engaged with the shaft body; the shaft body is rotatably engaged with the housing via the two support bearings; the planetary carrier and the shaft body are configured as an integral structure, and the two support bearings are located between the planetary carrier and the gear body.

[0017] In an optional embodiment, the output gear shaft further includes an anti-reverse nut; the shaft body and the gear body are connected by a spline; the anti-reverse nut is screwed onto the shaft body, and the anti-reverse nut cooperates with the support bearing of the two support bearings that is away from the planetary carrier to clamp the gear body.

[0018] In an optional embodiment, the integrated planetary output assembly further includes a spacer ring located between the two support bearings; a limiting step is provided outside the shaft body, and the spacer ring and the two support bearings are clamped between the limiting step and the gear body.

[0019] The beneficial effects of this utility model embodiment include, for example:

[0020] In summary, the integrated planetary output assembly provided in this embodiment, by integrating the output gear shaft and planet carrier together, eliminates the spline groove on the output gear shaft used for mounting the planet carrier. This reduces the machining difficulty of the output gear shaft, reduces its axial dimension, decreases its volume and weight, and lowers manufacturing costs. Simultaneously, it improves the structural strength of the output gear shaft and planet carrier, making them less prone to loosening and ensuring stable and reliable operation. Due to the reduced length of the output gear shaft, it is less prone to wobbling during rotation, resulting in high stability. The support bearings experience less external force, are less prone to wear and failure, have a longer service life, and lower operating and maintenance costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the integrated planetary output assembly in this embodiment;

[0023] Figure 2 This is a schematic diagram of a first modified example of the integrated planetary output assembly of this embodiment;

[0024] Figure 3 This is a schematic diagram of a second variation of the integrated planetary output assembly of this embodiment;

[0025] Figure 4 This is a schematic diagram of a third variation of the integrated planetary output assembly of this embodiment;

[0026] Figure 5 This is a schematic diagram of the fourth variation of the integrated planetary output assembly of this embodiment.

[0027] icon:

[0028] 100-Box housing; 200-Output gear shaft; 210-Shaft body; 211-Limit step; 212-Weight reduction hole; 220-Gear body; 230-Anti-reverse nut; 300-Planet carrier; 400-Internal gear ring; 500-Planet gear; 600-Support bearing; 700-Pressure plate; 710-Fixing nut; 800-Pin; 810-Screw; 900-Skeleton oil seal; 001-Baffle; 002-Distance ring. 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 description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during 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, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0035] In existing technologies, yaw and pitch gearboxes typically employ planetary transmission mechanisms to output torque. To facilitate the mounting of the planetary carrier 300 onto the output shaft, spline grooves are generally machined on the output shaft, with a certain length of relief groove at the end of the spline groove. The planetary carrier 300 is sleeved onto the output shaft, and the spline structure on the planetary carrier 300 engages with the spline groove. To ensure the structural strength of both, the spline groove needs to be designed to be relatively long, thus increasing the length of the output shaft, increasing the overall axial dimension, resulting in greater weight and higher cost. It also increases the wobble during the rotation of the output shaft, accelerating the wear of the support bearing 600 and shortening its lifespan.

[0036] In view of this, the designers have provided an integrated planetary output assembly that can reduce size, weight, and manufacturing costs, and extend the service life of the support bearing 600.

[0037] Please refer to Figures 1-5 This embodiment provides an integrated planetary output assembly, including:

[0038] The housing 100 comprises an output gear shaft 200, a planetary carrier 300, an internal gear ring 400, planetary gears 500, and two support bearings 600. The output gear shaft 200 and the planetary carrier 300 are integrated into one unit. The output gear shaft 200 passes through the housing 100 and is rotatably engaged with the housing 100 via the two support bearings 600. The internal gear ring 400 is fixed to the housing 100, and the planetary gears 500 are rotatably engaged with the planetary carrier 300, meshing with the planetary carrier 300.

[0039] As described above, the integrated planetary output assembly provided in this embodiment has at least the following advantages:

[0040] By integrating the output gear shaft 200 and the planetary carrier 300, the spline groove on the output gear shaft 200 for mounting the planetary carrier 300 is eliminated. This reduces the machining difficulty of the output gear shaft 200, decreases its axial dimension, reduces its size and weight, and lowers manufacturing costs. Simultaneously, it improves the structural strength of both the output gear shaft 200 and the planetary carrier 300, making them less prone to loosening and ensuring stable and reliable operation. Due to the reduced length of the output gear shaft 200, it is less prone to wobbling during rotation, resulting in high stability. The support bearing 600 experiences less external force, is less prone to wear and failure, has a longer service life, and reduces operating and maintenance costs.

[0041] The following embodiments illustrate the details of the integrated planetary output component of this application by way of example.

[0042] Please refer to Figures 1-5In this embodiment, optionally, the integrated planetary output assembly includes a housing 100, an output gear shaft 200, a planet carrier 300, an internal gear ring 400, planetary gears 500, two support bearings 600, a limiting component, a pin 800, a skeleton oil seal 900, and a baffle 001. The output gear shaft 200 and the planet carrier 300 are configured as an integral structure, with the planet carrier 300 located at the inner end of the output gear shaft 200, i.e., inside the housing 100. The output gear shaft 200 is rotatably connected to the housing 100 via two support bearings 600, and the outer end of the output gear shaft 200 is located outside the housing 100. The pin 800 is connected to the planet carrier 300, and the planetary gears 500 are rotatably mounted outside the pin 800. The internal gear ring 400 is fixedly connected to the housing 100, and the planetary gears 500 mesh with the internal gear ring 400. A limiting member is installed outside the output shaft gear shaft and can contact the support bearing 600 near its proximal end, restricting the axial position of the support bearing 600. A skeleton oil seal 900 can be installed between the limiting member and the housing 100, and the skeleton oil seal 900 can be located on the same side of the two support bearings 600, saving space between the two support bearings 600 for installing the skeleton oil seal 900, further shortening the axial dimension of the output gear shaft 200. A baffle 001 can be connected to the output gear shaft 200 and can seal the internal through-hole area of ​​the output gear shaft 200.

[0043] Optionally, the output gear shaft 200 includes a shaft body 210 and a gear body 220. The gear body 220 protrudes around the shaft body 210, and the gear body 220 and the shaft body 210 cooperate to form a step. The inner ring of the support bearing 600 near the distal end of the two support bearings 600 can contact the gear body 220, achieving axial limiting through the gear body 220. Simultaneously, a weight-reducing hole 212 can be provided inside the shaft body 210. The weight-reducing hole 212 can be a through hole, and one end of the weight-reducing hole 212 can penetrate the proximal end face of the shaft body 210 along its axial direction. A baffle 001 is embedded in the weight-reducing hole 212 and positioned close to the proximal end. The baffle 001 makes sealing contact with the hole wall of the weight-reducing hole 212 to prevent lubricating oil leakage from the weight-reducing hole 212. The design of the weight-reducing hole 212 can further reduce weight, reduce consumables, and lower costs.

[0044] Please refer to Figure 1 It should be understood that in this embodiment, the shaft 210 and the gear body 220 can be configured as an integral structure, which has high structural strength and long service life. For example, the output gear shaft 200 and the planetary carrier 300 can be forged.

[0045] Optionally, in some embodiments, the pin 800 and the planetary carrier 300 can be integrated into a single structure. The outer circumferential surface of the pin 800 does not protrude from the outer circumferential surface of the output gear shaft 200. The structure of the two is robust and reliable, not easily loosened, and operates stably. The limiting member can be a fixing nut 710, which can be sleeved on the outside of the output gear shaft 200 from one side of the pin 800. Since the pin 800 does not protrude from the outer circumferential surface of the output gear shaft 200, the pin 800 will not interfere with the limiting member and will not obstruct the installation of the limiting member. That is, after the output gear shaft 200, which has two support bearings 600 installed, is inserted into the housing 100, the fixing nut 710 is fixed on the outside of the output gear shaft 200. The fixing nut 710 can contact the inner ring of the support bearing 600 near the proximal end, thereby limiting the axial position of the support bearing 600. The position of the support bearing 600 is achieved by tightening the fixing nut 710, which is convenient to operate and facilitates subsequent disassembly.

[0046] Please refer to Figure 3 Optionally, in some embodiments, the pin 800 and the planetary carrier 300 can be configured as a separate structure, and the pin 800 can be fixed to the planetary carrier 300 by screws 810. Simultaneously, the limiting member can be a pressure plate 700, which is sleeved on the output gear shaft 200 and clamped between the pin 800 and the proximal support bearing 600, thus fixing the pressure plate 700 and the output gear shaft 200 axially. With this design, tightening the screws 810 fixes the pin 800 to the planetary carrier 300, and simultaneously, through the end face of the pin 800 contacting the pressure plate 700, the pressure plate 700 presses against the proximal support bearing 600, completing the assembly of the pressure plate 700 and the support bearing 600, resulting in high assembly efficiency.

[0047] Please refer to Figure 2 Obviously, even if the pin 800 and the planetary carrier 300 are set as separate structures, the limiting component can be set as a fixing nut 710. After the fixing nut 710 is screwed onto the outside of the output gear shaft 200, the pin 800 can be assembled.

[0048] It should be understood that by installing the skeleton oil seal 900 between the limiting member and the housing 100, the skeleton oil seal 900 and the limiting member overlap in the axial direction, which will not occupy additional axial space, thereby reducing the axial dimension of the output gear shaft 200.

[0049] Please refer to Figure 4 It should be understood that, in order to further reduce the size and increase the strength of the support bearing 600, a portion of the housing 100 can be machined into the outer raceway of the support bearing 600.

[0050] Please refer to Figure 5Optionally, in some embodiments, the shaft body 210 and gear body 220 of the output gear shaft 200 can be configured as separate structures. The output gear shaft 200 also includes an anti-reverse nut 230. The gear body 220 can be sleeved onto the shaft body 210 from the distal end, and the anti-reverse nut 230 is screwed onto the shaft body 210. The anti-reverse nut 230 contacts the distal end of the gear body 220, preventing it from dislodging from the shaft body 210. Specifically, after the gear body 220 is sleeved on the outside of the shaft 210, the proximal end of the gear body 220 contacts the distal support bearing 600. Then, the anti-reverse nut 230 is screwed onto the outside of the shaft 210 from the distal end, and the anti-reverse nut 230 contacts the distal end of the gear body 220. In this way, the distal support bearing 600 and the anti-reverse nut 230 cooperate to clamp the gear body 220, and the gear body 220 is relatively fixed relative to the shaft 210 in the axial direction of the shaft 210. Furthermore, the shaft 210 and the gear body 220 can be connected by a spline, allowing the gear body 220 and the shaft 210 to rotate together.

[0051] It should be understood that when the output gear shaft 200 is a split structure, the shaft body 210 and the planetary carrier 300 are configured as an integral structure. Furthermore, to reduce installation difficulty, an annular limiting step 211 can be provided on the outer circumference of the shaft body 210, and a spacer ring 002 can be fitted over the shaft body 210. The limiting step 211 is located near the proximal end of the shaft body 210, and the spacer ring 002 is located between the two support bearings 600. During assembly, the inner ring of the proximal support bearing 600 can be sleeved onto the outside of the shaft 210 from the distal end. Then, the spacer ring 002 is sleeved onto the outside of the shaft 210, and the shaft 210 is inserted into the housing 100. The inner ring of the distal support bearing 600 is sleeved onto the outside of the shaft 210 from the distal end. Finally, the anti-reverse nut 230 is screwed onto the distal end of the shaft 210. During the tightening of the anti-reverse nut 230, the inner ring of the distal support bearing 600, the spacer ring 002, and the inner ring of the proximal support bearing 600 are pushed in sequence, so that the inner ring of the proximal support bearing 600 contacts the limiting step 211. In this way, the limiting step 211 and the anti-reverse nut 230 cooperate to fix the inner rings of the two support bearings 600 and the spacer ring 002 onto the shaft 210.

[0052] Obviously, the outer ring of the support bearing 600 is mounted on the inner wall of the housing 100 and can be positioned by corresponding steps. Alternatively, in some embodiments, the outer ring of the support bearing 600 is directly integrated into the inner wall of the housing 100.

[0053] It should be understood that when the output gear shaft 200 is configured as a split type, the skeleton oil seal 900 can be placed between the spacer ring 002 and the housing 100. In addition, since the near-end positioning of the support bearing 600 is achieved through the limiting step 211, the limiting step 211 and the shaft 210 are an integral structure, which has high strength, is not easy to loosen, and has a long service life.

[0054] It is worth noting that by setting the spacer ring 002, its outer circumferential surface can be directly used as the sealing surface, facilitating the selection of standard oil seals. Without the spacer ring 002, a direct sealing solution on the outer circumferential surface of the output gear shaft 200 would be inconvenient for selecting standard oil seals and would require hardening the surface of the output gear shaft 200, resulting in a cumbersome and costly process. Furthermore, the design of the spacer ring 002 allows for precise control of axial preload, eliminating the need for preload force from a nut.

[0055] The integrated planetary output assembly provided in this embodiment forges the planetary carrier 300 and the output gear shaft 200 into a single structure, which facilitates manufacturing, increases efficiency, and shortens the axial dimension of the output gear shaft 200, reducing overall size and weight, and lowering manufacturing costs. Simultaneously, the shortened axial dimension of the output gear shaft 200 results in less wobble during rotation, reduces wear on the support bearing 600, and extends its service life.

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An integrated planetary output assembly, characterized in that, include: The enclosure comprises a housing (100), an output gear shaft (200), a planetary carrier (300), an internal gear ring (400), planetary gears (500), and two support bearings (600). The output gear shaft (200) and the planetary carrier (300) are integrated into one unit. The output gear shaft (200) passes through the housing (100) and is rotatably engaged with the housing (100) via the two support bearings (600). The internal gear ring (400) is fixed to the housing (100), and the planetary gears (500) are rotatably engaged with the planetary carrier (300). The planetary gears (500) mesh with the internal gear ring (400).

2. The integrated planetary output assembly according to claim 1, characterized in that: The integrated planetary output assembly also includes a limiting member and a pin (800). The limiting member is sleeved outside the output gear shaft (200) and contacts the inner ring of one of the two support bearings (600) to prevent the support bearing (600) from disengaging from the output gear shaft (200). The pin (800) is connected to the planet carrier (300), and the planet gear (500) is rotatably mounted outside the pin (800).

3. The integrated planetary output assembly according to claim 2, characterized in that: The pin (800) and the planet carrier (300) are configured as an integral structure; The limiting component is a fixing nut (710), which is screwed onto the outside of the output gear shaft (200).

4. The integrated planetary output assembly according to claim 2, characterized in that: The pin (800) is fixed to the planet carrier (300) by screws (810); The limiting member is configured as a pressure plate (700), which is sleeved on the outside of the output gear shaft (200). The pressure plate (700) is clamped between the pin (800) and the support bearing (600), and the pressure plate (700) and the output gear shaft (200) are fixed relative to each other in the axial direction of the output gear shaft (200); or, the limiting member is configured as a fixing nut (710), which is screwed on the outside of the output gear shaft (200) and contacts the support bearing (600).

5. The integrated planetary output assembly according to any one of claims 2-4, characterized in that: The integrated planetary output assembly also includes a skeleton oil seal (900), which is installed between the limiting member and the housing (100).

6. The integrated planetary output assembly according to any one of claims 1-4, characterized in that: The output gear shaft (200) has a weight reduction hole (212) inside.

7. The integrated planetary output assembly according to claim 6, characterized in that: One end of the weight reduction hole (212) passes through the end face of the output gear shaft (200) that extends into the housing (100); The integrated planetary output assembly also includes a baffle (001), which is embedded in the weight reduction hole (212) and the baffle (001) is sealed to the hole wall of the weight reduction hole (212).

8. The integrated planetary output assembly according to any one of claims 1-4, characterized in that: The output gear shaft (200) includes a shaft body (210) and a gear body (220). The gear body (220) is sleeved on the outside of the shaft body (210) and is fixedly engaged with the shaft body (210). The shaft body (210) is rotatably engaged with the housing (100) through the two support bearings (600). The planet carrier (300) and the shaft body (210) are configured as an integral structure, and the two support bearings (600) are located between the planet carrier (300) and the gear body (220).

9. The integrated planetary output assembly according to claim 8, characterized in that: The output gear shaft (200) also includes an anti-reverse nut (230); the shaft body (210) and the gear body (220) are connected by a spline; the anti-reverse nut (230) is screwed onto the shaft body (210), and the anti-reverse nut (230) cooperates with the support bearing (600) of the two support bearings (600) that is away from the planetary carrier (300) to clamp the gear body (220).

10. The integrated planetary output assembly according to claim 8, characterized in that: The integrated planetary output assembly also includes a spacer ring (002) located between the two support bearings (600); a limiting step (211) is provided outside the shaft body (210), and the spacer ring (002) and the two support bearings (600) are clamped between the limiting step (211) and the gear body (220).

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