CN217814797U

CN217814797U - Three-stage planetary reducer

Info

Publication number: CN217814797U
Application number: CN202221656887.6U
Authority: CN
Inventors: 胡炜
Original assignee: Ward Transmission Technology Tianjin Co ltd
Current assignee: Ward Transmission Technology Tianjin Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-15
Anticipated expiration: 2032-06-29

Abstract

The utility model provides a tertiary planetary reducer, including input shaft, first order planetary structure, second level planetary structure, third level planetary structure and output shaft, first order planetary structure left side is connected to the input shaft, first order planetary structure right side is connected to second level planetary structure one side, and second level planetary structure opposite side is connected to third level planetary structure one side, and third level planetary structure opposite side is connected to the output shaft. The three-stage planetary reducer of the utility model is suitable for underwater operation, and has compact structure, small volume, light weight and good underwater sealing performance; and can realize large speed ratio and large torque drive.

Description

Three-stage planetary reducer

Technical Field

The utility model belongs to the technical field of speed reducer equipment, especially, relate to a tertiary planetary reducer.

Background

River sewage treatment, the establishment sewage tunnel, need drill hole, lay the pipeline in the river below, the drainage, the construction in sewage tunnel all can not leave the speed reducer, and current commonly used speed reducer is bevel gear or helical gear structure, but has the great problem of speed reducer size. The scheme adopts a three-level planetary structure, occupies small space under the condition of the same parameters, can realize large-speed-ratio transmission, and can bear high torque.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a three-stage planetary reducer, which overcomes the above-mentioned shortcomings of the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a three-stage planetary reducer comprises an input shaft, a first-stage planetary structure, a second-stage planetary structure, a third-stage planetary structure and an output shaft, wherein the left side of the first-stage planetary structure is connected to the input shaft, the right side of the first-stage planetary structure is connected to one side of the second-stage planetary structure, the other side of the second-stage planetary structure is connected to one side of the third-stage planetary structure, and the other side of the third-stage planetary structure is connected to the output shaft;

the first-stage planetary structure comprises a first-stage planet carrier, a first-stage sun shaft, a first-stage bearing, a first-stage planet wheel, a first-stage pin shaft, a first-stage jackscrew, a first-stage inner gear ring, an input bearing seat and an input end cover, the inner wall of the input bearing seat is sleeved to the middle of the input shaft through a plurality of first-stage bearings, one end of the input shaft penetrates through the input end cover and is located outside the input end cover, an input oil seal is arranged in the input end cover, the other end of the input shaft is connected to one end of the first-stage sun shaft, the other end of the first-stage sun shaft is connected to the first-stage planetary structure, a plurality of first-stage planet wheels are arranged on the outer wall of the first-stage sun shaft, each first-stage planet wheel is mounted to the first-stage planet carrier through one first-stage pin shaft, a plurality of first-stage planet wheels are arranged inside the first-stage inner gear ring, one end of the first-stage inner gear ring is connected to the input bearing seat, and the other end of the first-stage planetary structure.

Furthermore, the second-stage planetary structure comprises a second-stage planet carrier, a second-stage sun shaft, a second-stage bearing, second-stage planet wheels, a second-stage pin shaft, a second-stage jackscrew and a second-stage inner gear ring, one end of the second-stage sun shaft is connected to the first-stage sun shaft, the other end of the second-stage sun shaft is connected to the third-stage planetary structure, a plurality of second-stage planet wheels are arranged on the outer wall of the second-stage sun shaft, each second-stage planet wheel is mounted to the second-stage planet carrier through one second-stage pin shaft, a plurality of jackscrew holes are formed in one end of the second-stage planet carrier, one second-stage jackscrew is mounted in each jackscrew hole and used for fixing the second-stage pin shaft, the plurality of second-stage planet wheels are arranged inside the second-stage inner gear ring, one end of the second-stage inner gear ring is connected to the first-stage inner gear ring, and the other end of the second-stage planetary structure is connected to the third-stage planetary structure.

Further, the third-stage planetary structure comprises a third-stage planetary carrier, a third-stage solar shaft, a third-stage planetary gear, a third-stage pin shaft, a third-stage jackscrew, a third-stage inner gear ring, an output bearing seat, an output end cover, an output oil seal and a third-stage bearing, one end of the third-stage solar shaft is connected to the second-stage solar shaft, the other end of the third-stage solar shaft is connected to the output shaft, a plurality of third-stage planetary gears are arranged on the outer wall of the third-stage solar shaft, each third-stage planetary gear is mounted to the third-stage planetary carrier through one third-stage pin shaft, a plurality of jackscrew holes are formed in one end of the third-stage planetary carrier, one third-stage jackscrew is mounted in each jackscrew hole and used for fixing the third-stage pin shaft, the plurality of third-stage planetary gears are all arranged inside the third-stage inner gear ring, one end of the third-stage inner gear ring is connected to one end of the second-stage inner gear ring, the other end of the output shaft is connected to one side of the output shaft, the inner wall of the output bearing seat is connected to one end cover through the plurality of the output shaft, the output end cover, the other end cover passes through the output end cover and is located outside the output end cover, and the output oil seal is arranged inside the output end cover.

Furthermore, the input shaft and the primary sun shaft are of an integrated structure.

Further, the input shaft and the output shaft are connected by an internal spline or an external spline or a flat key.

Furthermore, the primary planet carrier and the secondary sun shaft are of an integrally formed structure.

Furthermore, the second-level inner gear ring and the third-level inner gear ring are of an integrally formed structure.

Furthermore, the secondary planet carrier and the tertiary sun shaft are of an integrally formed structure.

Furthermore, the output shaft and the three-stage planet carrier are of an integrally formed structure.

Furthermore, the number of the three-stage planet wheels is larger than that of the first-stage planet wheels.

Compared with the prior art, tertiary planetary reducer have following advantage:

the three-stage planetary reducer of the utility model is suitable for underwater operation, and has compact structure, small volume, light weight and good underwater sealing performance; but also can realize the drive with large speed ratio and large torque.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic cross-sectional view of the whole structure according to the embodiment of the present invention.

Description of the reference numerals:

1. an input shaft; 2. a first stage planetary structure; 21. a primary planet carrier; 22. a primary sun shaft; 23. a primary bearing; 24. a primary planet wheel; 25. a first-stage pin shaft; 26. primary jackscrew; 27. a primary annular gear; 28. an input bearing pedestal; 29. an input end cover; 3. a second stage planetary structure; 31. a secondary planet carrier; 32. a secondary sun shaft; 33. a secondary bearing; 34. a secondary planet wheel; 35. a second-level pin shaft; 36. secondary jackscrew; 37. a secondary annular gear; 4. a third stage planetary structure; 41. a third-stage planet carrier; 42. a tertiary sun shaft; 43. a third planet wheel; 44. a third-level pin shaft; 45. third-stage jackscrew; 46. a third-stage annular gear; 47. an output bearing seat; 48. an output end cover; 49. a tertiary bearing; 410. outputting an oil seal; 5. and an output shaft.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the three-stage planetary reducer comprises an input shaft 1, a first-stage planetary structure 2, a second-stage planetary structure 3, a third-stage planetary structure 4 and an output shaft 5, wherein the left side of the first-stage planetary structure 2 is connected to the input shaft 1, the right side of the first-stage planetary structure 2 is connected to one side of the second-stage planetary structure 3, the other side of the second-stage planetary structure 3 is connected to one side of the third-stage planetary structure 4, and the other side of the third-stage planetary structure 4 is connected to the output shaft 5;

the first-stage planetary structure 2 comprises a first-stage planetary carrier 21, a first-stage sun shaft 22, a first-stage bearing 23, a first-stage planetary gear 24, a first-stage pin shaft 25, a first-stage jackscrew 26, a first-stage annular gear 27, an input bearing seat 28 and an input end cover 29, wherein the inner wall of the input bearing seat 28 is sleeved in the middle of the input shaft 1 through the plurality of first-stage bearings 23, one end of the input shaft 1 penetrates through the input end cover 29 and is located outside the input end cover 29, an input oil seal is arranged in the input end cover 29, the other end of the input shaft 1 is connected to one end of the first-stage sun shaft 22, the other end of the first-stage sun shaft 22 is connected to the first-stage planetary structure 2, the outer wall of the first-stage sun shaft 22 is provided with the plurality of first-stage planetary gears 24, each first-stage planetary gear 24 is mounted to the first-stage planetary carrier 21 through one first-stage pin shaft 25, one end of the first-stage planetary carrier 21 is provided with a plurality of jackscrew holes, each jackscrew 26 is used for fixing the first-stage pin shaft 25, the plurality of first-stage planetary gears 24 are all arranged in the first-stage annular gear 27, one end of the first-stage annular gear 27, one end is connected to the input bearing seat 28, and the other end is connected to the second-stage planetary structure 3. The input shaft 1 and the primary sun shaft 22 are of an integrally formed structure.

The three-stage planetary reducer is suitable for underwater operation, has compact structure, small volume, light weight and good underwater sealing property, and can realize large speed ratio and large torque drive.

In the present embodiment, the input shaft 1 and the output shaft 5 are concentrically configured. The input shaft 1 and the output shaft 5 can be connected by an internal spline and an external spline or a flat key. The stages are described separately below: the primary sun shaft 22 and the input shaft 1 are of an integral structure. The output shaft end of the input shaft 1 is provided with an input end cover 29, an input oil seal is arranged in the end cover, and the input end cover 29 is connected with an input bearing seat 28 through bolts. A primary bearing 23 in an input bearing seat 28 supports a primary sun shaft 22, and the input bearing seat 28 is connected with a primary inner gear ring 27 and a secondary inner gear ring 37 through bolts. The first-stage planet wheels 24 are internally provided with bearings, and 3 uniformly distributed first-stage planet wheels 24 are arranged on the corresponding first-stage planet carrier 21 through corresponding first-stage pin shafts 25. One end of the first-level planet carrier 21 is provided with a jackscrew hole, and a plurality of first-level pin shafts 25 are fixed by a first-level jackscrew 26.

The second-stage planetary structure 3 comprises a second-stage planet carrier 31, a second-stage sun shaft 32, a second-stage bearing 33, second-stage planet wheels 34, a second-stage pin shaft 35, a second-stage jackscrew 36 and a second-stage inner gear ring 37, one end of the second-stage sun shaft 32 is connected to the first-stage sun shaft 22, the other end of the second-stage sun shaft 32 is connected to the third-stage planetary structure 4, a plurality of second-stage planet wheels 34 are arranged on the outer wall of the second-stage sun shaft 32, each second-stage planet wheel 34 is mounted to the second-stage planet carrier 31 through one second-stage pin shaft 35, a plurality of jackscrew holes are formed in one end of the second-stage planet carrier 31, one second-stage jackscrew 36 is mounted in each jackscrew hole, the second-stage jackscrews 36 are used for fixing the second-stage pin shafts 35, the plurality of second-stage planet wheels 34 are all arranged inside the second-stage inner gear ring 37, one end of the second-stage inner gear ring 37 is connected to the first-stage inner gear ring 27, and the other end of the second-stage inner gear ring 37 is connected to the third-stage planetary structure 4.

In the present embodiment, the secondary sun shaft 32 and the primary carrier 21 are of an integral structure. A secondary bearing 33 is arranged inside each 3 secondary planet wheels 34, the secondary planet wheels 34 are fixed on the secondary planet carrier 31 through a secondary pin shaft 35, a jack screw hole is formed in one end of the secondary planet carrier 31, and a secondary jack screw 36 is installed to fix the secondary pin shaft 35. Second-stage ring gear 37 and third-stage ring gear 46 are of an integrated structure. The tertiary sun shaft 42 and the secondary planet carrier 31 are of an integral structure.

The third-stage planetary structure 4 comprises a third-stage planet carrier 41, a third-stage sun shaft 42, a third-stage planet wheel 43, a third-stage pin shaft 44, a third-stage jackscrew 45, a third-stage inner gear ring 46, an output shaft bearing 47, an output end cover 48, an output oil seal 410 and a third-stage bearing 49, one end of the third-stage sun shaft 42 is connected to the second-stage sun shaft 32, the other end of the third-stage sun shaft 42 is connected to the output shaft 5, a plurality of third-stage planet wheels 43 are arranged on the outer wall of the third-stage sun shaft 42, each third-stage planet wheel 43 is mounted to the third-stage planet carrier 41 through one third-stage pin shaft 44, a plurality of jackscrew holes are formed in one end of the third-stage planet carrier 41, one third-stage jackscrew 45 is mounted in each jackscrew hole, the third-stage jackscrews 45 are used for fixing the third-stage pin shafts 44, the plurality of third-stage planet wheels 43 are all arranged inside the third-stage inner gear ring 46, one end of the third-stage inner gear ring 46 is connected to the second-stage inner gear ring 37, the other end is connected to one side of the output bearing 47, the inner wall of the output bearing seat 47 is sleeved and the output shaft 5 through the third-stage bearing 49, the output end cover 48, the other end cover 48 is located outside the output 5, the output end cover 48 is located outside the output shaft 5, and the output oil seal 410 is arranged in the output end cover 48.

In the present embodiment, the output shaft 5 and the third-stage carrier 41 are of an integrated structure. And bearings are arranged in the 4 third-stage planet wheels 43, and each third-stage planet wheel 43 is connected to the third-stage planet carrier 41 through a third-stage pin shaft 44. And one end of the third-stage planet carrier 41 is provided with a jackscrew hole, and a third-stage pin shaft 44 is fixed through a third-stage jackscrew 45. An output shaft bearing 47 is installed on the outer sides of the second-stage ring gear 37 and the third-stage ring gear 46, and a third-stage bearing 49 is arranged inside the output shaft bearing 47 to support the output shaft 5. An output end cover 48 is arranged on the outer side of the output bearing seat 47, and an output oil seal 410 is arranged inside the output end cover 48. An output end cover 48 is connected to an output bearing seat 47 through a bolt, and the output bearing seat 47 is connected to the second-stage ring gear 37 and the third-stage ring gear 46.

The input shaft 1 and the output shaft 5 are connected by an internal spline or an external spline or a flat key. The primary planet carrier 21 and the secondary sun shaft 32 are of an integrally formed structure. And the secondary inner gear ring 37 and the tertiary inner gear ring 46 are of an integrally formed structure. The secondary planet carrier 31 and the tertiary sun shaft 42 are integrally formed. The output shaft 5 and the third-stage planet carrier 41 are of an integrally formed structure. The number of the third-stage planetary gears 43 is greater than that of the first-stage planetary gears 24.

The working sequence of the three-level planetary reducer is as follows: the input shaft 5 is driven to rotate by a power motor and other elements, the primary sun shaft tooth part is meshed with the primary planet gear 24 tooth part, the secondary sun shaft 32 rotates to drive the secondary planet gears 34, the tertiary sun shaft 42, the tertiary planet gears 43 and the output shaft 5 to rotate. Each stage of planet gears 24 rotates within a given orbital annulus. Each rotating element is supported by a bearing. Each stage of the ring gear does not rotate. The ring gears are fixedly connected to the input and output end covers 48, respectively. The input end cover 48 and the output end cover 48 are connected by sealing elements to prevent oil leakage and achieve sealing performance.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Tertiary planetary reducer, its characterized in that: the left side of the first-stage planetary structure (2) is connected to the input shaft (1), the right side of the first-stage planetary structure (2) is connected to one side of the second-stage planetary structure (3), the other side of the second-stage planetary structure (3) is connected to one side of the third-stage planetary structure (4), and the other side of the third-stage planetary structure (4) is connected to the output shaft (5);

the first-stage planetary structure (2) comprises a first-stage planetary carrier (21), a first-stage sun shaft (22), a first-stage bearing (23), a first-stage planet wheel (24), a first-stage pin shaft (25), a first-stage jackscrew (26), a first-stage inner gear ring (27), an input shaft (1) bearing seat and an input end cover (29), the inner wall of the input shaft (1) bearing seat is sleeved to the middle part of the input shaft (1) through a plurality of first-stage bearings (23), one end of the input shaft (1) penetrates through the input end cover (29) and is positioned outside the input end cover (29), an input oil seal is arranged in the input end cover (29), the other end of the input shaft (1) is connected to one end of the first-stage sun shaft (22), the other end of the first-stage sun shaft (22) is connected to the first-stage planetary structure (2), a plurality of first-stage planet wheels (24) are arranged on the outer wall of the first-stage sun shaft (22), each first-stage planet wheel (24) is respectively installed to the first-stage planetary carrier (21) through one first-stage pin shaft (25), a plurality of jackscrew holes are formed in one end of the first-stage planetary carrier (21), each jackscrew hole is respectively installed with one first-stage jackscrew (26), one end of the first-stage jackscrew (26), one pin shaft (25), one end of the first-stage planet wheel bearing seat (27) and is connected to one end of the first-stage planet wheel (27), the other end is connected to the second-stage planetary structure (3).

2. The three-stage planetary reducer according to claim 1, wherein: the second-stage planetary structure (3) comprises a second-stage planet carrier (31), a second-stage sun shaft (32), a second-stage bearing (33), second-stage planet wheels (34), a second-stage pin shaft (35), second-stage jackscrews (36) and a second-stage inner gear ring (37), one end of the second-stage sun shaft (32) is connected to the first-stage sun shaft (22), the other end of the second-stage sun shaft (32) is connected to the third-stage planetary structure (4), a plurality of second-stage planet wheels (34) are arranged on the outer wall of the second-stage sun shaft (32), each second-stage planet wheel (34) is mounted to the second-stage planet carrier (31) through one second-stage pin shaft (35), a plurality of jackscrew holes are formed in one end of the second-stage planet carrier (31), one second-stage jackscrew (36) is mounted in each jackscrew hole, the second-stage jackscrews (36) are used for fixing the second-stage pin shaft (35), the second-stage planet wheels (34) are arranged inside the second-stage inner gear ring (37), one end of the second-stage inner gear ring (37) is connected to the first-stage inner gear ring gear (27), and the other end of the second-stage planetary structure (4) is connected to the third-stage planetary structure (4).

3. The three-stage planetary reducer according to claim 2, wherein: the third-level planetary structure (4) comprises a third-level planet carrier (41), a third-level sun shaft (42), third-level planet wheels (43), a third-level pin shaft (44), a third-level jackscrew (45), a third-level inner gear ring (46), an output shaft (5) bearing seat (47), an output end cover (48), an output oil seal (410) and a third-level bearing (49), one end of the third-level sun shaft (42) is connected to the second-level sun shaft (32), the other end of the third-level sun shaft (42) is connected to the output shaft (5), a plurality of third-level planet wheels (43) are arranged on the outer wall of the third-level sun shaft (42), each third-level planet wheel (43) is respectively installed in the third-level planet carrier (41) through one third-level pin shaft (44), a plurality of jackscrew holes are formed in one end of the third-level planet carrier (41), one third-level jackscrew hole is respectively installed with one third-level jackscrew (45), the third-level jackscrew (45) is used for fixing the pin shaft (44), the plurality of third-level planet wheels (43) are all arranged in the third-level planet wheels (46), one end of the inner gear ring (46) is connected to the second-level planet carrier (37), the other end cover (47) is connected to one side of the third-level output shaft (5), the output shaft (47), the inner wall of the third-level output shaft (5) is connected to one end, the output shaft (5), the output shaft (48) through a plurality of the inner wall of the inner gear ring (47), the output shaft (5) passes through the output shaft (49), is positioned outside the output end cover (48), and an output oil seal (410) is arranged in the output end cover (48).

4. The three-stage planetary reducer according to claim 2, wherein: the input shaft (1) and the primary sun shaft (22) are of an integrally formed structure.

5. The three-stage planetary reducer according to claim 1, wherein: the input shaft (1) and the output shaft (5) are connected by an internal spline or an external spline or a flat key.

6. The three-stage planetary reducer according to claim 2, wherein: the primary planet carrier (21) and the secondary sun shaft (32) are of an integrally formed structure.

7. The three-stage planetary reducer according to claim 3, wherein: the secondary inner gear ring (37) and the tertiary inner gear ring (46) are of an integrally formed structure.

8. The three-stage planetary reducer according to claim 3, wherein: the secondary planet carrier (31) and the tertiary sun shaft (42) are of an integrally formed structure.

9. The three-stage planetary reducer according to claim 3, wherein: the output shaft (5) and the three-stage planet carrier (41) are of an integrally formed structure.

10. The three-stage planetary reducer according to claim 3, wherein: the number of the three-stage planet wheels (43) is larger than that of the first-stage planet wheels (24).