Impact-resistant planetary gear assembly structure

Abstract

The utility model discloses an anti-impact planetary wheel assembly structure, it includes planet carrier, a plurality of planetary wheel and locking assembly, planet carrier includes first frame body and second frame body, locking assembly includes planet axle, baffle, locking piece and fixed part, one end of planet axle is provided with flange, the other end of planet axle is set gradually through first frame body and second frame body, and the axial end surface of planet axle is flush with the end surface of second frame body away from first frame body. Through set up first frame body and second frame body, to make the both ends of planet axle be supported on first frame body and second frame body respectively, improved the connection stability between planet axle and planet carrier, simultaneously, the baffle is pasted with second frame body, one end of locking piece is fixedly connected with planet axle after passing through baffle, one end of fixed part is fixedly connected with second frame body after passing through baffle, to can promote the anti-impact capacity between planetary wheel and planet carrier.

Description

Technical Field

[0001] This utility model relates to the field of planetary gear mechanism technology, and in particular, to an impact-resistant planetary gear assembly structure. Background Technology

[0002] Planetary gears are gear systems that, in addition to rotating around their own axis of rotation like top gears, also have their axis of rotation rotate around the axes of other gears along with the planet carrier. They mainly consist of a planet carrier, planet gears, a sun gear, and an internal ring gear. During assembly, multiple planet gears are mounted on the planet carrier in a rotating manner. The outer sides of the planet gears mesh with the internal ring gear, and the inner sides of the planet gears mesh with the sun gear.

[0003] The traditional assembly method for the planetary carrier and planetary gears involves first assembling the planetary gears onto the planetary shaft using bearings, then inserting the planetary shaft into the planetary shaft mounting hole of the planetary carrier and securing it with an internal key. In this assembled planetary carrier-planetary gear structure, only one end of the planetary shaft is fixedly connected to the planetary carrier, while the other end is suspended. This structure affects the load balance at both ends of the planetary shaft, thus negatively impacting the connection stability between the planetary carrier and planetary gears and reducing its impact resistance. Utility Model Content

[0004] Therefore, it is necessary to provide an impact-resistant planetary gear assembly structure with strong connection stability and high impact resistance.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an impact-resistant planetary gear assembly structure, the impact-resistant planetary gear assembly structure includes a planet carrier, a plurality of planetary gears rotatably disposed on the planet carrier, and a locking assembly for locking the planetary gears and the planet carrier. The planet carrier includes a first frame and a second frame disposed opposite to each other. The locking assembly includes a planet shaft, a baffle corresponding to the planet shaft, a locking member with one end passing through the baffle and fixedly connected to the planet shaft, and a fixing member with one end passing through the baffle and fixedly connected to the second frame. One end of the planet shaft is provided with a flange, and the other end of the planet shaft passes through the first frame and the second frame in sequence, and the shaft end face of the planet shaft is flush with the end face of the second frame away from the first frame.

[0006] Furthermore, washers are fitted on the outside of both the locking member and the fixing member. One side of the washer elastically abuts against the end face of the baffle, and the other side of the washer elastically abuts against the end of both the locking member and the fixing member.

[0007] Furthermore, the washer is an elastic washer.

[0008] Furthermore, a bearing is provided between the planetary gear and the planetary shaft, the inner ring of the bearing is fixedly connected to the planetary shaft, and the outer ring of the bearing is fixedly connected to the planetary gear.

[0009] Furthermore, the planetary carrier also includes an arc-shaped plate, which is disposed between the first carrier and the second carrier, and the arc-shaped plate is located between two adjacent planetary gears.

[0010] Furthermore, the first frame and the second frame have the same structure. The first frame includes a main body, a reinforcing part, a mounting part, a first connecting column, and a second connecting column. The main body, the reinforcing part, and the mounting part are all annular structures. The first connecting column connects the main body and the reinforcing part, and the second connecting column connects the reinforcing part and the mounting part.

[0011] Furthermore, there are multiple first connecting posts and multiple second connecting posts, and the first connecting posts and the second connecting posts are staggered.

[0012] Furthermore, reinforcing ribs are provided between the arc-shaped plate and the first frame, and between the arc-shaped plate and the second frame.

[0013] Furthermore, there are four arc-shaped plates, the number of which is the same as the number of planetary gears, with one arc-shaped plate corresponding to one planetary gear.

[0014] Furthermore, the structure formed by the main body, the reinforcing part, the mounting part, the first connecting post, and the second connecting post is a hollow structure.

[0015] The beneficial effects of this utility model are as follows: The impact-resistant planetary gear assembly structure provided by this utility model, by setting a first frame and a second frame, allows the planetary gear to be installed on the planetary shaft, with both ends of the planetary shaft supported on the first frame and the second frame respectively. This balances the load on both ends of the planetary shaft, improving the connection stability between the planetary shaft and the planetary carrier. At the same time, by fitting the baffle to the second frame, with one end of the locking member passing through the baffle and being fixedly connected to the planetary shaft, and one end of the fixing member passing through the baffle and being fixedly connected to the second frame, the impact resistance between the planetary gear and the planetary carrier can be improved. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the impact-resistant planetary gear assembly structure of this utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram of the impact-resistant planetary gear assembly structure from another angle;

[0019] Figure 3 yes Figure 2 A magnified view of a portion of point A in the shock-resistant planetary gear assembly structure shown;

[0020] Figure 4 yes Figure 2 Front view of the impact-resistant planetary gear assembly structure shown;

[0021] Figure 5 yes Figure 4 A cross-sectional view along BB in the impact-resistant planetary gear assembly structure shown;

[0022] Figure 6 yes Figure 5 A magnified view of point C in the impact-resistant planetary gear assembly structure shown.

[0023] The component names and their numbers in the figure are as follows: 1. Planetary carrier; 11. First frame; 111. Main body; 112. Reinforcing part; 113. Mounting part; 114. First connecting column; 115. Second connecting column; 12. Second frame; 13. Arc plate; 14. Reinforcing rib; 2. Planetary gear; 3. Locking assembly; 31. Planetary shaft; 311. Flange; 32. Baffle; 33. Locking component; 34. Fixing component; 35. Washer; 4. Bearing. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] Please see Figures 1 to 6 This utility model provides an impact-resistant planetary gear assembly structure, which includes a planet carrier 1, planetary gears 2, and a locking assembly 3. Multiple planetary gears 2 are uniformly and rotatably mounted on the planet carrier 1 via the locking assembly 3. In this embodiment, there are four planetary gears 2. In other embodiments not shown, the number of planetary gears 2 can be two, three, or five. The number of planetary gears 2 is not limited here and can be set according to usage requirements.

[0026] The planetary carrier 1 includes a first carrier 11, a second carrier 12, and an arc-shaped plate 13. The first carrier 11 and the second carrier 12 have the same structure and are arranged opposite to each other and coaxially. The arc-shaped plate 13 is arranged between the first carrier 11 and the second carrier 12 and is located between two adjacent planetary gears 2, thereby enabling the fixation between the first carrier 11 and the second carrier 12.

[0027] In this embodiment, there are four arc-shaped plates 13, and the number of arc-shaped plates 13 is the same as the number of planetary gears 2, with one arc-shaped plate 13 corresponding to one planetary gear 2.

[0028] Furthermore, in order to increase the connection strength between the arc-shaped plate 13 and the first frame 11 and the second frame 12, reinforcing ribs 14 are provided between the arc-shaped plate 13 and the first frame 11 and between the arc-shaped plate 13 and the second frame 12.

[0029] The first frame 11 includes a main body 111, a reinforcing part 112, a mounting part 113, a first connecting post 114, and a second connecting post 115. The main body 111, reinforcing part 112, and mounting part 113 are all annular structures. The main body 111 is used to mount a sun gear, and the mounting part 113 is used to mount multiple planet gears 2. The first connecting post 114 connects the main body 111 and the reinforcing part 112. Specifically, one end of the first connecting post 114 is fixedly connected to the main body 111, and the other end is fixedly connected to the reinforcing part 112. Multiple first connecting posts 114 are evenly arranged along the circumference of the main body 111. The second connecting post 115 connects the reinforcing part 112 and the mounting part 113. Specifically, one end of the second connecting post 115 is fixedly connected to the reinforcing part 112, and the other end is fixedly connected to the mounting part 113. Multiple second connecting posts 115 are evenly arranged along the circumference of the reinforcing portion 112. By providing the reinforcing portion 112, the structural strength between the main body portion 111 and the mounting portion 113 can be increased, preventing breakage between them. Furthermore, the structure formed by the main body portion 111, the reinforcing portion 112, the mounting portion 113, the first connecting post 114, and the second connecting posts 115 is a hollow structure, which effectively reduces the weight of the planetary carrier 1 while ensuring structural strength, facilitating lightweight production.

[0030] Furthermore, the number of first connecting posts 114 and the number of second connecting posts 115 are the same as the number of planetary gears 2, and the second connecting posts 115 are staggered from the first connecting posts 114.

[0031] The locking assembly 3 includes a planetary shaft 31, a baffle 32, a locking member 33, and a fixing member 34. One end of the planetary shaft 31 has a protruding flange 311, and the other end of the planetary shaft 31 passes through the first frame 11 and the second frame 12 in sequence. The end face of the planetary shaft 31 is flush with the end face of the second frame 12 away from the first frame 11. The baffle 32 is in contact with the second frame 12 and corresponds to the planetary shaft 31. One end of the locking member 33 passes through the baffle 32 and is fixedly connected to the planetary shaft 31. One end of the fixing member 34 passes through the baffle 32 and is fixedly connected to the second frame 12. In this embodiment, both the locking member 33 and the fixing member 34 are bolts. One end of the locking member 33 passes through the baffle 32 and is threadedly fixed to the planetary shaft 31. One end of the fixing member 34 passes through the baffle 32 and is threadedly fixed to the second frame 12.

[0032] Washers 35 are fitted onto the exterior of both the locking member 33 and the fixing member 34. One side of the washer 35 elastically abuts against the end face of the baffle 32, and the other side of the washer 35 elastically abuts against the ends of the locking member 33 and the fixing member 34. When the locking member 33 and the fixing member 34 are tightened, the washer 35 can be pressed between the baffle 32 and the locking member 33, and between the baffle 32 and the fixing member 34, thereby pre-tightening the locking member 33 and the fixing member 34 and preventing them from easily loosening.

[0033] In this embodiment, washer 35 is an elastic washer. In other embodiments not shown, washer 35 may also be a disc spring.

[0034] A bearing 4 is provided between the planetary gear 2 and the planetary shaft 31. The inner ring of the bearing 4 is fixedly connected to the planetary shaft 31, and the outer ring of the bearing 4 is fixedly connected to the planetary gear 2. By providing the bearing 4, the smoothness of the rotation of the planetary gear 2 is improved, and the bearing 4 is effectively supported, thereby improving the working stability of the planetary gear 2.

[0035] During assembly, the bearing 4 is first installed on the planetary gear 2, and then the combination of the two is placed in the gap between the first frame 11 and the second frame 12. The planetary shaft 31 is then passed through the first frame 11, the bearing 4 and the second frame 12 in sequence. Finally, the baffle 32 is fitted to the second frame 12. One end of the locking member 33 passes through the baffle 32 and is fixedly connected to the planetary shaft 31. One end of the fixing member 34 passes through the baffle 32 and is fixedly connected to the second frame 12.

[0036] The impact-resistant planetary gear assembly structure provided by this utility model, by setting a first frame 11 and a second frame 12, allows the planetary gear 2 to be installed on the planetary shaft 31, with both ends of the planetary shaft 31 supported on the first frame 11 and the second frame 12 respectively. This balances the load on both ends of the planetary shaft 31, improving the connection stability between the planetary shaft 31 and the planetary carrier 1. At the same time, by fitting the baffle 32 against the second frame 12, one end of the locking member 33 passes through the baffle 32 and is fixedly connected to the planetary shaft 31, and one end of the fixing member 34 passes through the baffle 32 and is fixedly connected to the second frame 12, the impact resistance between the planetary gear 2 and the planetary carrier 1 can be improved.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An impact-resistant planetary gear assembly structure characterized by: The impact-resistant planetary gear assembly structure includes a planet carrier, a plurality of planetary gears rotatably mounted on the planet carrier, and a locking assembly for locking the planetary gears to the planet carrier. The planet carrier includes a first frame and a second frame arranged opposite to each other. The locking assembly includes a planetary shaft, a baffle corresponding to the planetary shaft, a locking member with one end passing through the baffle and fixedly connected to the planetary shaft, and a fixing member with one end passing through the baffle and fixedly connected to the second frame. One end of the planetary shaft is provided with a flange, and the other end of the planetary shaft passes through the first frame and the second frame in sequence, and the shaft end face of the planetary shaft is flush with the end face of the second frame away from the first frame.

2. The impact-resistant planetary gear assembly structure according to claim 1, wherein: Washers are fitted on the outside of both the locking member and the fixing member. One side of the washer elastically abuts against the end face of the baffle, and the other side of the washer elastically abuts against the end of the locking member and the end of the fixing member.

3. The impact-resistant planetary gear assembly structure according to claim 2, wherein: The washer is an elastic washer.

4. The impact-resistant planetary gear assembly structure of claim 1, wherein: A bearing is provided between the planetary gear and the planetary shaft, the inner ring of the bearing is fixedly connected to the planetary shaft, and the outer ring of the bearing is fixedly connected to the planetary gear.

5. The impact-resistant planetary gear assembly structure of claim 1, wherein: The planetary carrier also includes an arc-shaped plate, which is disposed between the first carrier and the second carrier, and is located between two adjacent planetary gears.

6. The impact-resistant planetary gear assembly structure according to claim 5, wherein: The first frame and the second frame have the same structure. The first frame includes a main body, a reinforcing part, a mounting part, a first connecting column and a second connecting column. The main body, the reinforcing part and the mounting part are all annular structures. The first connecting column connects the main body and the reinforcing part, and the second connecting column connects the reinforcing part and the mounting part.

7. The impact-resistant planetary gear assembly structure according to claim 6, wherein: The first connecting post has multiple components, the second connecting post has multiple components, and the first connecting post and the second connecting post are staggered.

8. The impact-resistant planetary gear assembly structure of claim 5, wherein: Reinforcing ribs are provided between the arc-shaped plate and the first frame, and between the arc-shaped plate and the second frame.

9. The impact-resistant planetary gear assembly structure of claim 5, wherein: There are four arc-shaped plates, and the number of arc-shaped plates is the same as the number of planetary gears, with one arc-shaped plate corresponding to one planetary gear.

10. The impact-resistant planetary gear assembly structure of claim 6, wherein: The structure formed by the main body, the reinforcing part, the mounting part, the first connecting column, and the second connecting column is a hollow structure.

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