Output-stage planet wheel with high meshing precision

Abstract

The utility model discloses an output-stage planet wheel with high meshing precision, and relates to the technical field of planet wheels. The planetary reducer comprises a shell and two planet carriers arranged in the shell, the ends, close to the inner wall of the shell, of the planet carriers are fixedly connected with installation bases, the installation bases are evenly distributed around the center line of the shell, idler wheels are rotationally connected into the installation bases, positioning grooves are formed in the two sides of the inner wall of the shell, and the idler wheels are arranged in the positioning grooves. Positioning grooves are formed in the two sides of the shell, the rollers on the two sides roll in the positioning grooves respectively, end covers for sealing the shell are fixed to the two sides of the shell through bolts, and the two end covers are located on one sides of the two positioning grooves respectively to limit the rollers. According to the utility model, the stress between the sun gear and the planetary gear is kept uniform and stable through the rollers and the positioning grooves, and meanwhile, the stability of the planetary carrier during rotation can be further kept through the contact between the balls and the planetary carrier, so that the meshing precision between the sun gear and the planetary gear can be further kept.

Description

Technical Field

[0001] This utility model belongs to the field of planetary gear technology, and in particular relates to an output stage planetary gear with high meshing accuracy. Background Technology

[0002] Planetary gears are precision transmission devices consisting of a sun gear, planet gears, an internal gear ring, and a planet carrier. Their core feature is the simultaneous meshing of multiple planet gears to distribute power, offering advantages such as compact structure, large transmission ratio, high efficiency, and strong load-bearing capacity.

[0003] A search revealed a high-performance, high-precision three-stage planetary gear disclosed in announcement number CN216478716U. While the aforementioned product exhibits good stability during use, the planetary carrier lacks positioning, making it prone to misalignment when the output shaft is under heavy load, thus affecting transmission accuracy and increasing wear. Therefore, an output-stage planetary gear with high meshing accuracy is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an output stage planetary gear with high meshing accuracy. By using rollers and positioning grooves, the force between the sun gear and planetary gears is kept uniform and stable. At the same time, by using balls to contact the planetary carrier, the stability of the planetary carrier during rotation is further maintained, thereby maintaining the meshing accuracy between the sun gear and planetary gears, thus solving the existing technical problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A high-precision output stage planetary gear includes: a housing and two planet carriers disposed within the housing. Each end of the planet carrier near the inner wall of the housing is fixedly connected to a mounting seat. The mounting seats are evenly distributed around the center line of the housing. Each mounting seat is rotatably connected to a roller. Positioning grooves are provided on both sides of the inner wall of the housing, and the rollers on both sides roll in the positioning grooves respectively.

[0007] Both sides of the housing are fixed with end caps for sealing the housing by bolts. The two end caps are respectively located on one side of the two positioning grooves to limit the rollers. When the sun gear and planet gear rotate, the rollers and positioning grooves can maintain the uniformity and stability of the force between the sun gear and planet gear, thereby maintaining the meshing accuracy between the sun gear and planet gear. One side of one of the planet carriers is fixedly connected to an output shaft, which rotates through the adjacent end cap.

[0008] Planetary assembly, which is disposed inside the housing;

[0009] Two positioning components are respectively located on one side of the two end caps to keep the planetary carrier stable.

[0010] As a further embodiment of this utility model, the planetary assembly includes a gear ring, a sun gear, and multiple planetary gears. The gear ring is fixed to the inner wall of the housing. The planetary gears are evenly arranged inside the gear ring and all mesh with the gear ring. The sun gear is arranged between the multiple planetary gears and meshes with the multiple planetary gears. Each planetary gear has a through mounting shaft fixed at its center, and the mounting shaft is rotatably connected to both planet carriers.

[0011] As a further embodiment of this utility model, an input shaft is fixedly connected to one side of the sun gear. The input shaft rotates through the end cover away from the output shaft. A through clearance hole is provided on the planetary carrier side away from the output shaft, and the input shaft passes through the clearance hole.

[0012] As a further embodiment of this utility model, the positioning component includes a fixing sleeve fixed to one side of the end cover, a plurality of balls are provided on one side of the fixing sleeve, and a pressure plate for positioning the balls is fixed to one side of the fixing sleeve by bolts. The balls are located on one side of the planetary carrier, and by contacting the planetary carrier with the balls, the stability of the planetary carrier during rotation can be further maintained, and the meshing accuracy between the sun gear and the planetary gears can be increased.

[0013] As a further improvement of this invention, a circular groove is provided on one side of the planetary carrier for the rolling of the balls.

[0014] As a further embodiment of this invention, connecting flanges are welded to the opposite sides of the end caps.

[0015] As a further improvement of this utility model, a sealing gasket is provided between the end cap and the housing.

[0016] In this application, after the planetary gear and the sun gear are installed in the gear ring, the planetary gear is stabilized by two planet carriers. At the same time, the rollers on both sides are located in the positioning grooves on both sides. Finally, the end cover is fixed to the housing to position the rollers. When the input shaft rotates, it drives the sun gear to rotate, which in turn causes the planetary gear to revolve and rotate, thereby causing the output shaft and the planet carrier to rotate. When the planet carrier rotates, the positioning grooves cooperate with the rollers to keep the planet carrier rotating vertically, maintaining the uniformity and stability of the force between the sun gear and the planetary gear, thus maintaining the meshing accuracy between the sun gear and the planetary gear. At the same time, the fixed sleeve and ball bearings installed on the end cover can maintain contact with the planet carrier, further maintaining the stability of the planet carrier during rotation and increasing the meshing accuracy between the sun gear and the planetary gear.

[0017] The embodiments of this utility model have the following beneficial effects:

[0018] In this invention, by installing multiple mounting seats and rollers on the planetary carrier, the force between the sun gear and the planetary gear can be kept uniform and stable through the rollers and positioning grooves when the sun gear and the planetary gear rotate, thereby maintaining the meshing accuracy between the sun gear and the planetary gear.

[0019] In this invention, by installing a positioning component on the end cover, the ball bearings contact the planetary carrier, which further maintains the stability of the planetary carrier during rotation and increases the meshing accuracy between the sun gear and the planetary gears.

[0020] In this invention, the rollers and positioning grooves maintain the uniformity and stability of the force between the sun gear and the planetary gears. At the same time, the contact between the balls and the planetary carrier further maintains the stability of the planetary carrier during rotation, thereby maintaining the meshing accuracy between the sun gear and the planetary gears.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0025] Figure 3 This is an exploded structural diagram of an embodiment of the present invention.

[0026] In the diagram: 1. Housing; 2. End cover; 3. Connecting flange; 4. Output shaft; 5. Gear ring; 6. Planetary carrier; 7. Mounting shaft; 8. Planetary gear; 9. Input shaft; 10. Sun gear; 11. Mounting base; 12. Roller; 13. Positioning groove; 14. Fixing sleeve; 15. Ball bearing; 16. Pressure plate; 17. Groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0029] Example 1

[0030] Please see Figures 1-3 As shown, this embodiment provides an output stage planetary gear with high meshing accuracy, including: a housing 1 and two planet carriers 6 disposed inside the housing 1. The planet carriers 6 can be polygonal or annular. The ends of the planet carriers 6 near the inner wall of the housing 1 are fixedly connected to mounting seats 11. The mounting seats 11 are evenly distributed around the center line of the housing 1. Rollers 12 are rotatably connected inside the mounting seats 11. Positioning grooves 13 are provided on both sides of the inner wall of the housing 1, and the rollers 12 on both sides roll in the positioning grooves 13 respectively.

[0031] Both sides of the housing 1 are fixed with end caps 2 for sealing the housing 1 by bolts. The two end caps 2 are respectively located on one side of the two positioning grooves 13 to limit the rollers 12. The rollers 12 and the positioning grooves 13 maintain the uniformity and stability of the force between the sun gear 10 and the planetary gear 8, thereby maintaining the meshing accuracy between the sun gear 10 and the planetary gear 8. One side of the planet carrier 6 is fixedly connected to the output shaft 4, and the output shaft 4 rotates through the adjacent end cap 2.

[0032] Planetary assembly, which is housed inside housing 1;

[0033] Two positioning components are respectively set on one side of the two end caps 2 to keep the planet carrier 6 stable.

[0034] In this utility model, the planetary assembly includes a gear ring 5, a sun gear 10, and multiple planetary gears 8. The gear ring 5 is fixed to the inner wall of the housing 1. The planetary gears 8 are evenly arranged inside the gear ring 5 and all mesh with the gear ring 5. The sun gear 10 is arranged between the multiple planetary gears 8 and meshes with the multiple planetary gears 8. Each planetary gear 8 has a through mounting shaft 7 fixed at its center. The mounting shaft 7 is rotatably connected to two planetary carriers 6. After the planetary gears 8 and the sun gear 10 are installed in the gear ring 5, the planetary gears 8 are kept stable by the two planetary carriers 6. At the same time, the rollers 12 on both sides are located in the positioning grooves 13 on both sides. Finally, the end cap 2 is fixed to the housing 1 to position the rollers 12.

[0035] In this invention, an input shaft 9 is fixedly connected to one side of the sun gear 10. The input shaft 9 rotates through the end cover 2 away from the output shaft 4. A through clearance hole is provided on the side of the planet carrier 6 away from the output shaft 4. The input shaft 9 passes through the clearance hole. When the input shaft 9 rotates, it drives the sun gear 10 to rotate, thereby causing the planet gear 8 to revolve and rotate, thus causing the output shaft 4 and the planet carrier 6 to rotate.

[0036] Example 2

[0037] Improvements based on Example 1: See Appendix Figures 1-3 The positioning assembly includes a fixing sleeve 14 fixed to one side of the end cover 2. A plurality of balls 15 are provided on one side of the fixing sleeve 14. A pressure plate 16 for positioning the balls 15 is fixed to one side of the fixing sleeve 14 by bolts. The balls 15 are located on one side of the planetary carrier 6. The fixing sleeve 14 and the balls 15 on the end cover 2 can maintain contact with the planetary carrier 6, further maintain the stability of the planetary carrier 6 during rotation, and increase the meshing accuracy between the sun gear 10 and the planetary gear 8.

[0038] In this invention, a circular groove 17 is provided on one side of the planetary carrier 6 for the rolling of the balls 15.

[0039] In particular, connecting flanges 3 are welded to the opposite sides of the end caps 2, which facilitates the fixing of the equipment.

[0040] It should be noted that a sealing gasket is provided between the end cap 2 and the housing 1. The sealing gasket increases the sealing between the end cap 2 and the housing 1 and prevents dust from entering.

[0041] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0042] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An output stage planetary gear with high engagement accuracy, characterized by, Include: The shell (1) and two planet carrier (6) arranged in the shell (1), the planet carrier (6) is fixedly connected with the mounting seat (11) near the end of the inner wall of the shell (1), the mounting seat (11) is uniformly distributed around the center line of the shell (1), the mounting seat (11) is rotatably connected with the roller (12), the both sides of the inner wall of the shell (1) are provided with positioning groove (13), the rollers (12) on both sides are rolled in the positioning groove (13) respectively; The both sides of the shell (1) are fixed with the end cover (2) for closing the shell (1) through the bolt, two end covers (2) are located on one side of two positioning grooves (13) for limiting the roller (12), one side of one of the planet carrier (6) is fixedly connected with the output shaft (4), the output shaft (4) rotates through the adjacent end cover (2); The planet assembly is arranged in the shell (1); Two positioning assemblies are arranged on one side of two end covers (2) for keeping the planet carrier (6) stable.

2. The high-meshing output planetary gear of claim 1, wherein The planet assembly includes a gear ring (5), a sun gear (10) and a plurality of planet gears (8), the gear ring (5) is fixed on the inner wall of the shell (1), the planet gears (8) are evenly arranged in the gear ring (5) and are engaged with the gear ring (5), the sun gear (10) is arranged between the plurality of planet gears (8) and is engaged with the plurality of planet gears (8), the planet gears (8) are fixed with the through mounting shaft (7) at the center, and the mounting shaft (7) is rotatably connected with the two planet carriers (6).

3. The high-meshing output planetary gear set of claim 2, wherein: One side of the sun gear (10) is fixedly connected with the input shaft (9), the input shaft (9) rotates through the end cover (2) away from the output shaft (4), the planet carrier (6) away from the output shaft (4) is provided with a through avoiding hole on one side, and the input shaft (9) passes through the avoiding hole.

4. The high-meshing output planetary gear set of claim 1, wherein: The positioning assembly includes a fixed sleeve (14) fixed on one side of the end cover (2), a plurality of balls (15) are arranged on one side of the fixed sleeve (14), a pressing plate (16) for positioning the balls (15) is fixed on one side of the fixed sleeve (14) through the bolt, and the balls (15) are located on one side of the planet carrier (6).

5. The high-precision meshing output stage planetary gear of claim 4, wherein, One side of the planet carrier (6) is provided with a circular rolling groove (17) for rolling the balls (15).

6. The high-meshing output planetary gear set of claim 1, wherein: The end cover (2) is welded with a connecting flange (3) on the side away from each other.

7. The high-meshing output planetary gear set of claim 1, wherein: The end cover (2) and the shell (1) are provided with a sealing gasket.

Images