Reduction gear planet carrier

Abstract

The utility model discloses a reduction gear planet carrier, which relates to the technical field of planet carriers and comprises a planet carrier main body consisting of an annular bottom plate and a circular top plate, a planet gear, a gear ring and an arc-shaped scraper. By arranging the arc-shaped scraping plate, when the planet carrier main body operates circumferentially, the rotating arc-shaped scraping plate can drive lubricating oil, so that when the planet carrier main body is horizontally arranged, the lubricating oil distributed at the bottom can be driven to the top, and uniform distribution of the lubricating oil is guaranteed; when the driven auxiliary gear rotates, lubricating oil can keep flowing well, and when the planet carrier body stops running, the driven auxiliary gear can play a role in blocking, so that flowing of the lubricating oil is blocked, and the lubricating oil is prevented from flowing and gathering to the bottom of the gear ring.

Description

Technical Field

[0001] The utility model relates to the technical field of planet carriers, in particular to a reduction gear planet carrier. Background Art

[0002] A planetary gear refers to a gear system in which, in addition to being able to rotate around its own axis like a fixed-axis gear, its axis of rotation also rotates around the axis of other gears with the planet carrier. The planet carrier is one of the main components of the planetary gear transmission device. The planet gear shaft or bearing is installed on the planet carrier. In actual use, the sun gear can be driven to rotate by the drive shaft. Through meshing transmission, the planetary gears can be driven to revolve around the sun gear. While revolving, the planetary gears will also rotate on their own axes, and then the planet carrier can be driven to rotate.

[0003] When assembling existing planetary gears, corresponding lubricating oil is filled between the sun gear, planetary gears and the ring gear to reduce wear during operation. In actual use, when the planetary gears are running, the fluidity of the lubricating oil will increase due to the rise in temperature. When the planetary gears are horizontally placed as a whole, after the planetary gears stop running, the flowing lubricating oil is likely to gather under the inner wall of the ring gear due to its own weight, resulting in a reduction in the lubricating oil between the upper part of the inner wall of the ring gear, the upper part of the sun gear and the planetary gears distributed above, thus affecting the lubrication effect. Based on this, in order to make the lubricating oil inside the planetary gears in a uniform state, a reduction gear planet carrier is provided. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a reduction gear planet carrier to solve the problems in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A reduction gear planet carrier includes a planet carrier main body composed of an annular bottom plate and a circular top plate. A plurality of evenly distributed planetary gears are rotatably installed between the circular top plate and the annular bottom plate. A ring gear is sleeved and meshed outside the plurality of planetary gears. An arc-shaped scraper is fixedly welded between the annular bottom plate and the circular top plate. There are a plurality of the arc-shaped scrapers and every two of them form a group. The multiple groups of arc-shaped scrapers are evenly distributed along the circumference, and the two arc-shaped scrapers in a group are symmetrically distributed with the planetary gear as the center.

[0006] The arc-shaped scraper extends outwards beyond the annular bottom plate and the circular top plate. When the annular bottom plate and the circular top plate rotate circumferentially, the lubricating oil distributed between the planetary gears and the ring gear is scraped by the arc-shaped scraper, so that when the planet carrier main body is horizontally arranged, the lubricating oil distributed at the bottom can be driven to the top.

[0007] As a further solution of the present utility model: a driven auxiliary gear is arranged between the annular bottom plate and the circular top plate and between two planetary gears, and the driven auxiliary gear is rotatably connected to the annular bottom plate and the circular top plate and is synchronously meshed with two adjacent planetary gears.

[0008] As a further solution of the present utility model: a plurality of the driven auxiliary gears are provided, and the plurality of driven auxiliary gears are evenly distributed along the circumference, and the plurality of driven auxiliary gears are sequentially distributed between two groups of adjacent arc-shaped scrapers.

[0009] As a further solution of the present utility model: a sun gear is meshed in the middle of the plurality of planetary gears, one end of the sun gear is fixed with an input shaft that penetrates through the middle of the annular bottom plate to the outside of the annular bottom plate, and the sun gear is not in contact with the driven auxiliary gear.

[0010] As a further solution of the present utility model: the annular bottom plate, the circular top plate, the arc-shaped scraper, and the output shaft are integrally formed by a casting process, and the annular bottom plate and the circular top plate are provided with hole grooves for installing the rotating shafts of the planetary gears and the driven auxiliary gears.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By providing the arc-shaped scraper, when the planetary carrier body runs circumferentially, the rotating arc-shaped scraper can drive the lubricating oil. In this way, when the planetary carrier body is horizontally arranged, the lubricating oil distributed at the bottom can be driven to the top, so as to ensure the uniform distribution of the lubricating oil. At the same time, through the arrangement of a plurality of driven auxiliary gears, the lubricating oil can maintain good flow when the driven auxiliary gears rotate. When the planetary carrier body stops running, the driven auxiliary gears can play a blocking role, so that the flow of the lubricating oil is blocked, and the accumulation of the lubricating oil at the bottom of the gear ring is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a split structural diagram of the present utility model;

[0015] Figure 3 is a split schematic diagram of the planetary carrier body of the present utility model;

[0016] Figure 4 is a split schematic diagram of the planetary gear, the driven auxiliary gear and the annular bottom plate of the present utility model;

[0017] Figure 5 is a structural distribution diagram of the sun gear, the planetary gear, the driven auxiliary gear and the gear ring of the present utility model.

[0018] In the figure: 1. Planet carrier main body; 101. Annular bottom plate; 102. Circular top plate; 103. Arc-shaped scraper; 104. Output shaft; 2. Planet gear; 3. Ring gear; 4. Input shaft; 5. Sun gear; 6. Driven auxiliary gear. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 5 , in the embodiment of the present invention, a reduction gear planet carrier includes a planet carrier main body 1 composed of an annular bottom plate 101 and a circular top plate 102. A plurality of evenly distributed planet gears 2 are rotatably installed on the circular top plate 102 and the annular bottom plate 101. A ring gear 3 is sleeved and engaged on the outer sides of the plurality of planet gears 2. An arc-shaped scraper 103 is fixedly welded between the annular bottom plate 101 and the circular top plate 102. There are a plurality of arc-shaped scrapers 103 and they are grouped in pairs. The plurality of groups of arc-shaped scrapers 103 are evenly distributed along the circumference, and the two arc-shaped scrapers 103 in a group of arc-shaped scrapers 103 are symmetrically distributed with the planet gear 2 as the center;

[0021] The arc-shaped scraper 103 extends and protrudes outside the annular bottom plate 101 and the circular top plate 102. When the circumferences of the annular bottom plate 101 and the circular top plate 102 rotate, the lubricating oil distributed between the planet gear 2 and the ring gear 3 is scraped by the arc-shaped scraper 103, so that when the planet carrier main body 1 is horizontally arranged, the lubricating oil distributed at the bottom can be driven to the top;

[0022] A driven auxiliary gear 6 is arranged between two planet gears 2 in the middle of the annular bottom plate 101 and the circular top plate 102. The driven auxiliary gear 6 is rotatably connected to the annular bottom plate 101 and the circular top plate 102 and is synchronously engaged with two adjacent planet gears 2;

[0023] A plurality of driven auxiliary gears 6 are provided. The plurality of driven auxiliary gears 6 are evenly distributed along the circumference, and the plurality of driven auxiliary gears 6 are sequentially distributed in the middle of two adjacent groups of arc-shaped scrapers 103;

[0024] A sun gear 5 is engaged in the middle of the plurality of planet gears 2. One end of the sun gear 5 is fixed with an input shaft 4 that penetrates through the middle of the annular bottom plate 101 to the outside of the annular bottom plate 101, and the sun gear 5 is not in contact with the driven auxiliary gear 6.

[0025] In this embodiment, it should be noted that after assembling the driven auxiliary gear 6, the planetary gear 2 and the planetary carrier body 1, lubricating oil is applied to the middle area between the driven auxiliary gear 6 and the planetary gear 2 and between multiple planetary gears 2. Then, the whole is assembled with the ring gear 3 and the sun gear 5. At this time, lubricating oil is filled between the ring gear 3 and the planetary gear 2. In this way, during operation, good lubrication can be maintained between the planetary gear 2, the sun gear 5 and the ring gear 3.

[0026] In addition, through multiple groups of arc-shaped scrapers 103 and the driven auxiliary gear 6, the middle area between the annular bottom plate 101 and the circular top plate 102 can be divided into multiple areas: the central area composed of multiple driven auxiliary gears 6 and planetary gears 2, and the outer circulation area composed of the driven auxiliary gear 6, two arc-shaped scrapers 103 and the ring gear 3.

[0027] When the planetary carrier body 1 runs circumferentially, the rotating arc-shaped scraper 103 can drive the lubricating oil. In this way, when the planetary carrier body 1 is horizontally arranged, the lubricating oil distributed at the bottom can be driven to the top to ensure the uniform distribution of the lubricating oil.

[0028] At the same time, due to the setting of multiple driven auxiliary gears 6, when the driven auxiliary gears 6 rotate, the lubricating oil can flow between the central area and the outer circulation area. When the planetary carrier body 1 stops running, the driven auxiliary gears 6 can play a blocking role, preventing the flow of the lubricating oil in the central area and the lubricating oil distributed at the top, and avoiding the accumulation of the lubricating oil at the bottom of the ring gear 3. In this way, when running again, the lubrication between the top of the ring gear 3, the sun gear 4 and the planetary gear 2 is smooth.

[0029] Please refer to Figures 1 to 5 , the annular bottom plate 101, the circular top plate 102, the arc-shaped scraper 103 and the output shaft 104 are integrally formed by casting, and the annular bottom plate 101 and the circular top plate 102 are provided with hole grooves for installing the rotating shafts of the planetary gear 2 and the driven auxiliary gear 6.

[0030] In this embodiment, the overall structure of the planetary carrier body 1 is integrally formed by casting, which is convenient for processing and production. It should be noted that due to the structure of the arc-shaped scraper 103, when the planetary carrier body 1 runs circumferentially, one arc-shaped scraper 103 in a group of arc-shaped scrapers 103 pushes the lubricating oil towards the middle between this arc-shaped scraper 103 and the planetary gear 2, so as to fully coat the lubricating oil outside the planetary gear 2 (this arc-shaped scraper 103 is located at the rear end of the circumferential running direction of the planetary gear 2), and the other arc-shaped scraper 103 pushes the lubricating oil in front of the rotation of the planetary gear 2 towards the rotation direction. During this process, the lubricating oil can fully fill the tooth gap of the ring gear 3 and at the same time push the excess lubricating oil upwards, so that good lubrication is maintained between the ring gear 3 and the planetary gear 2.

[0031] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A planetary carrier of a reduction gear, comprising a planetary carrier body (1) composed of an annular bottom plate (101) and a circular top plate (102), wherein a plurality of uniformly distributed planetary gears (2) are rotatably installed between the circular top plate (102) and the annular bottom plate (101), and a gear ring (3) is sleeved and meshed outside the plurality of planetary gears (2), characterized in that, An arc-shaped scraper (103) is fixedly welded between the annular bottom plate (101) and the circular top plate (102). There are multiple arc-shaped scrapers (103) and they are grouped in pairs. Multiple groups of the arc-shaped scrapers (103) are evenly distributed along the circumference, and the two arc-shaped scrapers (103) in a group of the arc-shaped scrapers (103) are symmetrically distributed with the planetary gear (2) as the center; The arc-shaped scraper (103) extends outwards beyond the annular bottom plate (101) and the circular top plate (102). When the annular bottom plate (101) and the circular top plate (102) rotate circumferentially, the lubricating oil distributed between the planetary gear (2) and the ring gear (3) is scraped by the arc-shaped scraper (103), so that when the planetary carrier body (1) is horizontally arranged, the lubricating oil distributed at the bottom can be driven to the top.

2. A planetary carrier of a reduction gear according to claim 1, characterized in that, A driven auxiliary gear (6) is arranged between two planetary gears (2) in the middle of the annular bottom plate (101) and the circular top plate (102). The driven auxiliary gear (6) is rotatably connected to the annular bottom plate (101) and the circular top plate (102) and is synchronously meshed with two adjacent planetary gears (2).

3. A planetary carrier of a reduction gear according to claim 2, characterized in that, There are multiple driven auxiliary gears (6), and the multiple driven auxiliary gears (6) are evenly distributed along the circumference, and the multiple driven auxiliary gears (6) are sequentially distributed in the middle of two adjacent groups of arc-shaped scrapers (103).

4. A planetary carrier of a reduction gear according to claim 2, characterized in that, A sun gear (5) is meshed in the middle of the multiple planetary gears (2). One end of the sun gear (5) is fixed with an input shaft (4) that penetrates to the middle of the annular bottom plate (101) and extends outside the annular bottom plate (101), and the sun gear (5) does not contact the driven auxiliary gear (6).

5. A planetary carrier of a reduction gear according to claim 2, characterized in that, The annular bottom plate (101), the circular top plate (102), the arc-shaped scraper (103), and the output shaft (104) are integrally formed by a casting process, and the annular bottom plate (101) and the circular top plate (102) are provided with hole grooves for installing the rotating shafts of the planetary gear (2) and the driven auxiliary gear (6).

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