Linear contact dome stop block structure

Abstract

The utility model discloses a linear contact globe roof stop block structure, which is arranged between an output planet carrier and a sun gear in a planetary gear box and comprises a linear contact stop block and a linear contact globe roof, the linear contact stop block is of an annular structure and is arranged on the output planet carrier, and the linear contact globe roof is arranged on the output planet carrier. The linear contact ball top is of an annular structure matched with the linear contact check block, the linear contact ball top and the linear contact check block are coaxially arranged, the linear contact ball top is installed on the sun gear, and a floating space is formed between the linear contact ball top and the linear contact check block. And one surface, facing the line contact stop block, of the line contact ball top is a convex cambered surface. The planetary gear box not only has higher use stability and longer service life, but also is beneficial to the formation of an oil film on the end surface of an inner gear of the planetary gear box, so that a good floating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear boxes, in particular to a line-contact ball-top stopper structure. Background Art

[0002] In the sugar refining industry, the efficient and stable operation of production equipment is crucial for ensuring production efficiency and product quality. As one of the most important transmission devices in this industry, planetary gearboxes, with their stable and reliable performance, are crucial for the smooth operation of the entire sugar refining production line. However, the unique operating conditions of the sugar refining process present numerous challenges to the design and use of planetary gearboxes.

[0003] Specifically, during the sugar-pressing process, the high viscosity and pressure of the material place heavy loads on the output planetary carrier, often accompanied by complex swings and vibrations. This unique operating condition places extremely high demands on the structural strength and durability of the planetary gearbox.

[0004] In existing planetary gearbox designs, the connection between the output planet carrier and the sun gear typically utilizes a point-contact spherical stop. While this structure may perform well in general transmission applications, its limitations become apparent under the unique operating conditions of the sugar refining industry. Due to its small contact area, the point-contact spherical stop is prone to localized crushing when the output planet carrier is subjected to significant impact loads and oscillation. This not only reduces the transmission efficiency of the gearbox but also severely impacts its service life and safety. Summary of the Invention

[0005] In view of the above problems existing in the existing planetary gearbox, the present invention aims to provide a line-contact ball top stopper structure with high stability and long service life.

[0006] The specific technical solutions are as follows:

[0007] A line-contact ball-top stopper structure is provided between the output planet carrier and the sun gear in a planetary gearbox, comprising:

[0008] A line contact stopper, which is an annular structure and is mounted on the output planet carrier;

[0009] The line contact ball top is an annular structure that matches the line contact stopper and is coaxially arranged with the line contact stopper. The line contact ball top is installed on the sun gear, and there is a floating space between the line contact ball top and the line contact stopper. The side of the line contact ball top facing the line contact stopper is an outward convex arc surface.

[0010] As a further improvement and optimization of this solution, the line contact block and the output planet carrier, as well as the line contact ball top and the sun gear are installed through interference.

[0011] As a further improvement and optimization of this solution, the output planet carrier and the opposite end faces of the sun gear are both provided with mounting grooves, and the line contact block / the line contact ball top is interference-mounted in the mounting grooves.

[0012] As a further improvement and optimization of this solution, the output planet carrier, the sun gear, the line contact block, and the line contact ball top are all coaxially arranged.

[0013] As a further improvement and optimization of this solution, the width of the floating space is C, C=1-2mm.

[0014] As a further improvement and optimization of this solution, the output planet carrier and the sun gear are connected via a transmission member.

[0015] As a further improvement and optimization of this solution, the transmission member includes:

[0016] an inner gear ring, the inner gear ring is coaxially arranged with the output planet carrier and sleeved on the outside of the output planet carrier;

[0017] The planetary gears are rotatably mounted on the output planetary carrier and are located between the inner gear ring and the sun gear, and the planetary gears are respectively located on the inner gear ring and meshed with the sun gear.

[0018] As a further improvement and optimization of this solution, the planetary gearbox includes:

[0019] A housing, the output planet carrier is rotatably mounted on the housing, the driving end of the output planet carrier extends into the housing, the sun gear is rotatably mounted in the housing, and the inner ring gear is mounted in the housing;

[0020] A drive shaft is rotatably mounted on the housing, and an output end of the drive shaft extends into the housing and is transmission-connected to the sun gear.

[0021] As a further improvement and optimization of this solution, the drive shaft and the output planetary carrier are respectively located on both sides of the box.

[0022] As a further improvement and optimization of this solution, the output planet carrier is rotatably mounted on the housing via two bearings.

[0023] Compared with the prior art, the above technical solution has the following positive effects:

[0024] In the utility model, when the output planetary carrier of the planetary gearbox swings due to the impact load during the sugar pressing operation, the line contact block and the line contact ball top realize line-surface contact cooperation to increase the contact area of ​​the ball top block, thereby effectively preventing the local crushing phenomenon. It not only has high stability in use and a long service life, but also is conducive to the formation of oil film on the end face of the gear in the planetary gearbox, thereby achieving a good floating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a planetary gearbox with a line-contact ball-top stopper structure according to the present invention;

[0026] Figure 2 This is an enlarged schematic diagram of point A of a line-contact ball-top stopper structure of the present invention;

[0027] In the attached figure: 1. housing; 2. output planetary carrier; 3. planetary gears; 4. internal ring gear; 5. sun gear; 6. drive shaft; 7. bearing; 8. line contact block; 9. line contact ball top; 21. mounting slot. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like are used to indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and to simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] Figure 1 This is a schematic structural diagram of a planetary gearbox with a line-contact ball-top stopper structure according to the present invention. Figure 2 This is an enlarged schematic diagram of point A of a line-contact ball-top stopper structure of the present invention, as shown in FIG. Figure 1-2 As shown, a line contact ball top stopper structure of a preferred embodiment is shown, which is arranged between the output planetary carrier 2 and the sun gear 5 in the planetary gearbox, including a line contact stopper 8 and a line contact ball top 9. The line contact stopper 8 is an annular structure and is installed on the output planetary carrier 2. The line contact ball top 9 is an annular structure that matches the line contact stopper 8 and is coaxially arranged with the line contact stopper 8. The line contact ball top 9 is installed on the sun gear 5. There is a floating space between the line contact ball top 9 and the line contact stopper 8, and the side of the line contact ball top 9 facing the line contact stopper 8 is an outward convex arc surface.

[0032] In this embodiment, when the output planetary carrier 2 of the planetary gearbox swings due to the impact load during the sugar pressing operation, the line contact block 8 and the line contact ball top 9 realize line-surface contact cooperation to increase the contact area of ​​the ball top block, thereby effectively preventing local crushing. It not only has high stability in use and a long service life, but also is conducive to the formation of oil film on the end face of the gear in the planetary gearbox, thereby achieving a good floating effect.

[0033] Furthermore, as a preferred embodiment, the line contact stopper 8 and the output planet carrier 2, as well as the line contact ball top 9 and the sun gear 5 are installed by interference.

[0034] Furthermore, as a preferred embodiment, the output planet carrier 2 and the sun gear 5 have opposite end surfaces provided with mounting grooves 21 , and the line contact block 8 / the line contact ball top 9 are interference-fitted into the mounting grooves 21 .

[0035] Furthermore, as a preferred embodiment, the output planet carrier 2, the sun gear 5, the line contact block 8, and the line contact ball top 9 are all coaxially arranged.

[0036] Furthermore, as a preferred embodiment, the width of the floating space is C, C=1-2mm.

[0037] Furthermore, as a preferred embodiment, the output planet carrier 2 and the sun gear 5 are connected via a transmission member.

[0038] Furthermore, as a preferred embodiment, the transmission member includes an inner ring gear 4 and planetary gears 3. The inner ring gear 4 is coaxially arranged with the output planetary carrier 2 and is sleeved on the outside of the output planetary carrier 2. The planetary gears 3 are rotatably mounted on the output planetary carrier 2 and are located between the inner ring gear 4 and the sun gear 5, and the planetary gears 3 are respectively meshed with the inner ring gear 4 and the sun gear 5.

[0039] Furthermore, as a preferred embodiment, the planetary gearbox includes a housing 1 and a drive shaft 6, the output planetary carrier 2 is rotatably mounted on the housing 1, and the drive end of the output planetary carrier 2 extends into the housing 1, and the sun gear 5 is rotatably mounted in the housing 1, the inner ring gear 4 is mounted in the housing 1, the drive shaft 6 is rotatably mounted on the housing 1, and the output end of the drive shaft 6 extends into the housing 1 and is transmission-connected to the sun gear 5.

[0040] Furthermore, as a preferred embodiment, the drive shaft 6 and the output planetary carrier 2 are respectively located on both sides of the housing 1 .

[0041] Furthermore, as a preferred embodiment, the output planet carrier 2 is rotatably mounted on the housing 1 via two bearings 7 .

[0042] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A line contact ball top stopper structure, provided between the output planet carrier and the sun gear in a planetary gearbox, characterized in that: include: A line contact stopper, which is an annular structure and is mounted on the output planet carrier; The line contact ball top is an annular structure that matches the line contact stopper and is coaxially arranged with the line contact stopper. The line contact ball top is installed on the sun gear, and there is a floating space between the line contact ball top and the line contact stopper. The side of the line contact ball top facing the line contact stopper is an outward convex arc surface.

2. The line contact ball top stopper structure according to claim 1, characterized in that: The line contact stopper and the output planet carrier, and the line contact ball top and the sun gear are both installed through interference fit.

3. The line contact ball top stopper structure according to claim 2, characterized in that: The opposite end faces of the output planet carrier and the sun gear are both provided with mounting grooves, and the line contact block / the line contact ball top is interference-fitted in the mounting grooves.

4. The line contact ball top stopper structure according to claim 3, characterized in that: The output planet carrier, the sun gear, the line contact block, and the line contact ball top are all coaxially arranged.

5. The line contact ball top stopper structure according to claim 1, characterized in that: The width of the floating space is C, C=1-2mm.

6. The line contact ball top stopper structure according to claim 4, characterized in that: The output planet carrier and the sun gear are connected via a transmission member.

7. The line contact ball top stopper structure according to claim 6, characterized in that: The transmission member includes: an inner gear ring, the inner gear ring is coaxially arranged with the output planet carrier and sleeved on the outside of the output planet carrier; The planetary gears are rotatably mounted on the output planetary carrier and are located between the inner gear ring and the sun gear, and the planetary gears are respectively located on the inner gear ring and meshed with the sun gear.

8. The line contact ball top stopper structure according to claim 7, characterized in that: The planetary gearbox comprises: A housing, the output planet carrier is rotatably mounted on the housing, the driving end of the output planet carrier extends into the housing, the sun gear is rotatably mounted in the housing, and the inner ring gear is mounted in the housing; A drive shaft is rotatably mounted on the housing, and an output end of the drive shaft extends into the housing and is transmission-connected to the sun gear.

9. The line contact ball top stopper structure according to claim 8, characterized in that: The driving shaft and the output planet carrier are respectively located on two sides of the box body.

10. The line contact ball top stopper structure according to claim 8, characterized in that: The output planet carrier is rotatably mounted on the box body via two bearings.

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