Adjustable planetary reducer

Abstract

The utility model discloses an adjustable planetary reducer, and relates to the technical field of gears with orbital motion. The adjustable planetary speed reducer comprises a speed reducer shell, the speed reducer shell is used for the planetary speed reducer, the interior of the speed reducer shell is slidably connected with a shell, the surface of the shell is fixedly connected with an output shaft, the surface of the output shaft rotationally penetrates through the surface of the speed reducer shell, and the surface of the output shaft slidably penetrates through the surface of the speed reducer shell; when the planetary reducer needs to rotate reversely, a second limiting column is pulled out, the output shaft is pushed to enable a connecting column of the output shaft to enter a third limiting hole, and therefore the rotation direction of the input shaft and the rotation direction of the output shaft can be opposite for speed reduction; therefore, the speed reducer can achieve the same rotation direction of the input shaft and the output shaft for speed reduction, has the function of adjusting forward rotation and reverse rotation speed reduction of the speed reducer, and is wider in application range compared with a common reverse rotation speed reducer.

Description

Technical Field

[0001] The utility model relates to the technical field of gears with orbital motion, in particular to an adjustable planetary reducer. Background Art

[0002] The planetary gear reducer has the characteristics of light weight, small size, wide transmission ratio range, high efficiency, smooth operation, low noise and strong adaptability. The Chinese utility model patent, authorization announcement number "CN203585222U", discloses a coaxial reverse planetary reducer, including gears, input planet carrier, reversing planet carrier, output shaft, reducer housing, end cover, and the motor input shaft and output shaft are coaxial.

[0003] The above technical solution is configured such that the output shaft is composed of two inner and outer concentric shafts, so that the two output concentric shafts rotate in opposite directions; the coaxial reversing planetary reducer adopts a structural form of one-direction input and two-direction output. The utility model uses a double planetary carrier to complete deceleration and reversing, and realizes a coaxial reversing planetary reducer. It is a single-input dual-output planetary reducer with a high transmission ratio and high transmission efficiency, and has the characteristics of good safety and stability and high transmission efficiency. The reverse planetary reducer achieves coaxial reversal through multi-stage gears, but due to the limitation of its internal space setting, it cannot be used when forward deceleration is required, and the use scenario is limited. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an adjustable planetary reducer capable of solving the problem of having gears with orbital motion.

[0005] To achieve the above object, the utility model provides the following technical solutions: an adjustable planetary reducer, comprising a reducer housing, the reducer housing is used for the planetary reducer, the interior of the reducer housing is slidably connected with a shell, the surface of the shell is fixedly connected with an output shaft, the surface of the output shaft rotates and penetrates the surface of the reducer housing, and the surface of the output shaft slides and penetrates the surface of the reducer housing;

[0006] Wherein, a planetary reduction device is arranged inside the reducer housing;

[0007] The planetary reduction device includes a first gear ring, the surface of which is rotatably connected to the interior of the reducer housing, three planetary gears are arranged inside the first gear ring, the surfaces of the three planetary gears are all meshed with the inner surface of the first gear ring, a sun gear is arranged inside the three planetary gears, the surfaces of the three planetary gears are all meshed with the surface of the sun gear, an input shaft is fixedly sleeved on the inner surface of the sun gear, and the surface of the input shaft rotates and penetrates the surface of the reducer housing;

[0008] Among them, the inner surface of the top planetary gear is provided with a columnar body, the surface of the columnar body is slidingly connected to the inner surface of the top planetary gear, the surface of the columnar body is rotationally connected to the inner surface of the top planetary gear, and the surface of the columnar body is fixedly connected to the planetary carrier.

[0009] Preferably, a first through hole is opened on the surface of the reducer housing, and a first limiting column is installed on the inner surface of the first through hole;

[0010] A second through hole is provided on the surface of the reducer housing, and a second limiting column is installed on the inner surface of the second through hole.

[0011] Preferably, a first limiting hole is formed on the surface of the columnar body, and the surface of the first limiting hole contacts the surface of the first limiting column;

[0012] Among them, a second limiting hole is opened on the surface of the first gear ring, and the interior of the second limiting hole contacts the surface of the second limiting column.

[0013] Preferably, a second gear ring is fixedly connected to the interior of the housing;

[0014] A groove is formed inside the shell.

[0015] Preferably, a gear is fixedly sleeved on the surface of the planetary carrier, the surface of the gear is meshed with the inner surface of the second gear ring, and the diameter of the gear is smaller than the inner diameter of the groove.

[0016] Preferably, a third limiting hole is provided on the surface of the first gear ring;

[0017] Wherein, a connecting column is fixedly connected to the surface of the shell.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) When the adjustable planetary reducer needs to be reversed, by pulling out the second limit column and pushing the output shaft so that its connecting column enters the third limit hole, the input shaft and the output shaft can be decelerated in opposite directions of rotation. When the reducer needs to be forward, by pulling out the first limit column, the input shaft and the output shaft can be decelerated in the same direction of rotation. Thus, the reducer has the function of forward and reverse deceleration. Compared with a general reverse reducer, the reducer has a wider range of application scenarios.

[0020] (2) The adjustable planetary reducer. Generally, the reversing planetary reducer is reversed through multi-stage gears, but the meshing of the multi-stage gears brings meshing energy loss, and the meshing accuracy of the multi-stage gears needs to be consistently maintained. The planetary reducer only needs to mesh the planetary gears, and does not need multi-stage gear transmission to achieve the coaxial reverse rotation of the output shaft and the input shaft, that is, there is no additional gear transmission when reversing, thereby improving the transmission effect. It only needs to ensure the meshing accuracy of the planetary gears, which is easier to maintain than the meshing accuracy requirements of the multi-stage gear meshing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the structure inside the reducer housing of the utility model;

[0023] Figure 2 This is a schematic diagram of the positions of the first through hole, the second limiting hole, and the second through hole of the utility model;

[0024] Figure 3 This is a schematic diagram of the interior of the housing of the utility model;

[0025] Figure 4 This is a schematic diagram of the connection relationship between the gear and the planet carrier of the utility model;

[0026] Figure 5 It is a schematic diagram of the connection relationship between the gear and the second gear ring of the utility model.

[0027] Figure numerals: 1. reducer housing; 2. output shaft; 3. housing; 4. connecting column; 5. planetary gear; 6. third limiting hole; 7. first ring gear; 8. sun gear; 9. input shaft; 10. columnar body; 11. first limiting column; 12. second limiting column; 13. gear; 14. first limiting hole; 15. first through hole; 16. second through hole; 17. second limiting hole; 18. second ring gear; 19. groove; 20. planetary carrier. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] See also Figure 1-5 The utility model provides a technical solution: an adjustable planetary reducer, including a reducer housing 1, the reducer housing 1 is used for a planetary reducer, the interior of the reducer housing 1 is slidably connected with a shell 3, the surface of the shell 3 is fixedly connected with an output shaft 2, the surface of the output shaft 2 rotates and penetrates the surface of the reducer housing 1, and the surface of the output shaft 2 slides and penetrates the surface of the reducer housing 1;

[0033] Among them, a planetary reduction device is arranged inside the reducer housing 1;

[0034] The planetary reduction device includes a first gear ring 7, the surface of which is rotatably connected to the interior of the reducer housing 1, three planetary gears 5 are arranged inside the first gear ring 7, the surfaces of the three planetary gears 5 are all meshed with the inner surface of the first gear ring 7, a sun gear 8 is arranged inside the three planetary gears 5, the surfaces of the three planetary gears 5 are all meshed with the surface of the sun gear 8, an input shaft 9 is fixedly sleeved on the inner surface of the sun gear 8, and the surface of the input shaft 9 rotates and penetrates the surface of the reducer housing 1;

[0035] Among them, a columnar body 10 is provided on the inner surface of the top planetary gear 5, the surface of the columnar body 10 is slidingly connected to the inner surface of the top planetary gear 5, the surface of the columnar body 10 is rotationally connected to the inner surface of the top planetary gear 5, and the surface of the columnar body 10 is fixedly connected to the planetary carrier 20.

[0036] A first through hole 15 is formed on the surface of the reducer housing 1, and a first limiting column 11 is installed on the inner surface of the first through hole 15;

[0037] A second through hole 16 is formed on the surface of the reducer housing 1 , and a second limiting column 12 is installed on the inner surface of the second through hole 16 .

[0038] A first limiting hole 14 is formed on the surface of the columnar body 10, and the surface of the first limiting hole 14 contacts the surface of the first limiting column 11;

[0039] Among them, a second limiting hole 17 is opened on the surface of the first gear ring 7, and the interior of the second limiting hole 17 contacts the surface of the second limiting column 12.

[0040] A second gear ring 18 is fixedly connected to the interior of the housing 3;

[0041] A groove 19 is formed inside the housing 3 .

[0042] A gear 13 is fixedly sleeved on the surface of the planet carrier 20 , and the surface of the gear 13 meshes with the inner surface of the second gear ring 18 . The diameter of the gear 13 is smaller than the inner diameter of the groove 19 .

[0043] A third limiting hole 6 is formed on the surface of the first gear ring 7;

[0044] A connecting column 4 is fixedly connected to the surface of the shell 3 .

[0045] When the reducer needs to rotate forward, the first limiting column 11 is pulled out and separated from the inside of the first through hole 15, and the input shaft 9 rotates. The rotation of the input shaft 9 drives the sun gear 8 to rotate. The rotation of the sun gear 8 drives the three third limiting holes 6 to move. The movement of the three third limiting holes 6 drives the columnar body 10 to move. The rotation of the columnar body 10 drives the planetary carrier 20 to rotate. The rotation of the planetary carrier 20 drives the gear 13 to rotate. The direction of rotation of the gear 13 is the same as that of the input shaft 9. The rotation of the gear 13 drives the second ring gear 18 to rotate. The rotation of the second ring gear 18 drives the housing 3 to rotate. The rotation of the housing 3 drives the output shaft 2 to rotate in the same direction as the input shaft 9.

[0046] When the reducer needs to rotate in the opposite direction, the second limiting column 12 is pulled out and separated from the inside of the second through hole 16, and the output shaft 2 is pushed to slide by an external force. The sliding of the output shaft 2 drives the housing 3 to slide, and the sliding of the housing 3 drives the connecting column 4 to slide to the inside of the third limiting hole 6. The sliding of the housing 3 drives the second ring gear 18 to slide. When the connecting column 4 is about to enter the inside of the planetary gear 5, the second ring gear 18 is no longer meshed with the gear 13, and the gear 13 completely enters the inside of the groove 19. The input shaft 9 rotates, and the rotation of the input shaft 9 drives the sun gear 8 to rotate. The rotation of the sun gear 8 drives the three planetary gears 5 to rotate. The rotation direction of the three planetary gears 5 is opposite to that of the sun gear 8. The rotation of the three planetary gears 5 drives the first ring gear 7 to rotate, and the rotation of the first ring gear 7 drives the third limiting hole 6 to rotate. The rotation of the third limiting hole 6 drives the planetary gears 5 to rotate, and the rotation of the planetary gears 5 drives the housing 3 to rotate. The rotation of the housing 3 drives the output shaft 2 to rotate in the opposite direction to the input shaft 9.

[0047] When the planetary reducer needs to be reversed, by pulling out the second limiting column 12 and pushing the output shaft 2 so that its connecting column 4 enters the third limiting hole 6, the input shaft 9 and the output shaft 2 can be decelerated in opposite directions of rotation. When the reducer needs to be forward, by pulling out the first limiting column 11, the input shaft 9 and the output shaft 2 can be decelerated in the same direction of rotation. This allows the reducer to be adjusted for forward and reverse deceleration. Compared with a general reverse reducer, this reducer has a wider range of application scenarios.

[0048] Generally, a reversing planetary reducer reverses through multi-stage gears, but the meshing of multi-stage gears brings about meshing energy loss, and the meshing accuracy of the multi-stage gears needs to be consistently maintained. This planetary reducer only needs to perform meshing between the planetary gears, and does not require multi-stage gear transmission to achieve coaxial reverse rotation of the output shaft 2 and the input shaft 9, that is, there is no additional gear transmission when reversing, thereby improving the transmission effect. It only needs to ensure the meshing accuracy of the planetary gears, which is easier to maintain than the meshing accuracy requirements of multi-stage gear meshing.

[0049] Working principle: when the reducer needs to rotate forward, pull out the first limiting column 11 and disengage it from the inside of the first through hole 15, and the input shaft 9 rotates. The rotation of the input shaft 9 drives the sun gear 8 to rotate. The rotation of the sun gear 8 drives the three third limiting holes 6 to move. The movement of the three third limiting holes 6 drives the column 10 to move. The rotation of the column 10 drives the planetary carrier 20 to rotate. The rotation of the planetary carrier 20 drives the gear 13 to rotate. The direction of rotation of the gear 13 is the same as that of the input shaft 9. The rotation of the gear 13 drives the second ring gear 18 to rotate. The rotation of the second ring gear 18 drives the housing 3 to rotate. The rotation of the housing 3 drives the output shaft 2 to rotate in the same way as the input shaft 9.

[0050] When the reducer needs to rotate in the opposite direction, the second limiting column 12 is pulled out and separated from the inside of the second through hole 16, and the output shaft 2 is pushed to slide by an external force. The sliding of the output shaft 2 drives the housing 3 to slide, and the sliding of the housing 3 drives the connecting column 4 to slide to the inside of the third limiting hole 6. The sliding of the housing 3 drives the second ring gear 18 to slide. When the connecting column 4 is about to enter the inside of the planetary gear 5, the second ring gear 18 is no longer meshed with the gear 13, and the gear 13 completely enters the inside of the groove 19. The input shaft 9 rotates, and the rotation of the input shaft 9 drives the sun gear 8 to rotate. The rotation of the sun gear 8 drives the three planetary gears 5 to rotate. The rotation direction of the three planetary gears 5 is opposite to that of the sun gear 8. The rotation of the three planetary gears 5 drives the first ring gear 7 to rotate, and the rotation of the first ring gear 7 drives the third limiting hole 6 to rotate. The rotation of the third limiting hole 6 drives the planetary gears 5 to rotate, and the rotation of the planetary gears 5 drives the housing 3 to rotate. The rotation of the housing 3 drives the output shaft 2 to rotate in the opposite direction to the input shaft 9.

[0051] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An adjustable planetary reducer, comprising a reducer housing (1), characterized in that: The reducer housing (1) is used for a planetary reducer; the interior of the reducer housing (1) is slidably connected to a housing (3); the surface of the housing (3) is fixedly connected to an output shaft (2); the surface of the output shaft (2) rotates and penetrates the surface of the reducer housing (1); and the surface of the output shaft (2) slides and penetrates the surface of the reducer housing (1); Wherein, a planetary reduction device is arranged inside the reducer housing (1); The planetary reduction device comprises a first gear ring (7), the surface of the first gear ring (7) is rotatably connected to the interior of the reducer housing (1), three planetary gears (5) are arranged inside the first gear ring (7), the surfaces of the three planetary gears (5) are meshed with the inner surface of the first gear ring (7), a sun gear (8) is arranged inside the three planetary gears (5), the surfaces of the three planetary gears (5) are meshed with the surface of the sun gear (8), an input shaft (9) is fixedly sleeved on the inner surface of the sun gear (8), and the surface of the input shaft (9) rotatably penetrates the surface of the reducer housing (1); The inner surface of the uppermost planetary gear (5) is provided with a columnar body (10), the surface of the columnar body (10) is slidably connected to the inner surface of the uppermost planetary gear (5), the surface of the columnar body (10) is rotationally connected to the inner surface of the uppermost planetary gear (5), and the surface of the columnar body (10) is fixedly connected to the planet carrier (20).

2. The adjustable planetary reducer according to claim 1, characterized in that: A first through hole (15) is provided on the surface of the reducer housing (1), and a first limiting column (11) is installed on the inner surface of the first through hole (15); A second through hole (16) is provided on the surface of the reducer housing (1), and a second limiting column (12) is installed on the inner surface of the second through hole (16).

3. The adjustable planetary reducer according to claim 2, characterized in that: A first limiting hole (14) is provided on the surface of the columnar body (10), and the surface of the first limiting hole (14) is in contact with the surface of the first limiting column (11); A second limiting hole (17) is provided on the surface of the first gear ring (7), and the interior of the second limiting hole (17) is in contact with the surface of the second limiting column (12).

4. The adjustable planetary reducer according to claim 1, characterized in that: A second gear ring (18) is fixedly connected to the interior of the housing (3); A groove (19) is provided inside the housing (3).

5. The adjustable planetary reducer according to claim 4, characterized in that: A gear (13) is fixedly sleeved on the surface of the planet carrier (20), the surface of the gear (13) meshes with the inner surface of the second gear ring (18), and the diameter of the gear (13) is smaller than the inner diameter of the groove (19).

6. The adjustable planetary reducer according to claim 1, characterized in that: A third limiting hole (6) is provided on the surface of the first gear ring (7); Wherein, a connecting column (4) is fixedly connected to the surface of the shell (3).

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