CN219198064U - Internal spline installation positioning structure - Google Patents
Internal spline installation positioning structure Download PDFInfo
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- CN219198064U CN219198064U CN202320011411.5U CN202320011411U CN219198064U CN 219198064 U CN219198064 U CN 219198064U CN 202320011411 U CN202320011411 U CN 202320011411U CN 219198064 U CN219198064 U CN 219198064U
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- gear
- shaft
- internal spline
- assembly
- shaft part
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Abstract
The utility model discloses an internal spline installation positioning structure, which comprises: the gear shaft, the first gear assembly, the second gear assembly, the internal spline and the annular gear are sequentially sleeved on the gear shaft, and the internal gear is sleeved on the outer side of the internal spline; the gear shaft includes at least: the first shaft part and the second shaft part that connect gradually, the external diameter of first shaft part is greater than the external diameter of second shaft part, and the internal spline cover is located on the second shaft part, and the one end of internal spline is formed with a first spacing portion along the axial extension, and the inboard of first spacing portion is formed with first spacing hole, and first spacing portion cover is located on the first shaft part, and the internal diameter in first spacing hole matches with the external diameter in first shaft part. By applying the utility model, the internal spline mounting and positioning structure suitable for the speed reducer is provided, and the accurate mounting and positioning of the internal spline is realized, so that the service life of the internal spline is further prolonged; the utility model has simple structure, convenient installation and strong stability.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to an internal spline installation positioning structure.
Background
For the existing speed reducer of the gearbox, a corresponding internal spline structure is often arranged on a gear shaft inside the speed reducer so as to be in operative transmission connection with an adjacent gear, and therefore the power transmission requirement of the speed reducer is met. The existing internal spline structure is more and adopts straight-tooth cylindrical involute spline and gear shaft to make interconnection, the tooth profile of said involute spline is involute, and when loaded, the teeth have radial force.
However, the involute spline realizes centering by means of the involute tooth profile, so that the centering precision is high, the precision of manufacturing the involute tooth profile is required to be relatively high, and the installation adjustment requirement is high when the internal spline is installed, so that the manufacturing and installation cost of the internal spline is greatly improved; meanwhile, when the internal gear and the external gear of the existing internal spline are meshed, the side clearance is larger due to the influence of installation precision, and the spline is easily damaged due to unbalanced load caused by spline stress in the working process.
Disclosure of Invention
In view of the above, the present utility model provides an internal spline mounting and positioning structure, comprising: the gear comprises a gear shaft, a first gear assembly, a second gear assembly, an internal spline and an annular gear, wherein the first gear assembly, the internal spline and the second gear assembly are sequentially sleeved on the gear shaft, the internal gear is sleeved on the outer side of the internal spline, and the annular gear is movably connected with the first gear assembly or the second gear assembly in a transmission manner;
wherein, the gear shaft includes at least: the first shaft part and the second shaft part that connect gradually, the external diameter of first shaft part is greater than the external diameter of second shaft part, the internal spline cover is located on the second shaft part, just the one end of internal spline is formed with a first spacing portion along axial extension, the inboard of first spacing portion is formed with first spacing hole, first spacing portion cover is located on the first shaft part, the internal diameter of first spacing hole with the external diameter phase-match of first shaft part.
In another preferred embodiment, the gear shaft further comprises: the first shaft part, the second shaft part and the third shaft part are connected in sequence, the outer diameter of the third shaft part is smaller than the outer diameter of the second shaft part, the other end of the internal spline extends along the axial direction to form a second limiting part, the inner side of the second limiting part is provided with a second limiting hole, the second limiting part is sleeved on the third shaft part, and the inner diameter of the second limiting hole is matched with the third shaft part.
In another preferred embodiment, the first gear assembly is sleeved on the first shaft portion, and the second gear assembly is sleeved on the third shaft portion.
In another preferred embodiment, further comprising: the first distance ring is sleeved on the first shaft part and clamped between the first gear assembly and the first limiting part.
In another preferred embodiment, further comprising: the second distance ring is sleeved on the third shaft part and clamped between the second gear assembly and the second limiting part.
In another preferred embodiment, the second limiting portion includes: the inner ring part is arranged on the inner side of the other end of the extension part in an extending mode, the inner ring part extends inwards in the radial direction, and a second limiting hole is formed in the inner side of the inner ring part.
In another preferred embodiment, the first gear assembly comprises: the gear comprises a first gear body and a first bearing assembly, wherein the first bearing assembly is mounted on the gear shaft, and the first gear body is mounted on the first bearing assembly.
In another preferred embodiment, the first bearing assembly comprises: the gear comprises a gear shaft, a first bearing part, a second bearing part and a third distance ring, wherein the first bearing part, the third distance ring and the second bearing part are sequentially sleeved on the gear shaft, and the third distance ring is clamped between the first bearing part and the second bearing part.
In another preferred embodiment, the second gear assembly comprises: the second gear body and the second bearing assembly are installed on the gear shaft, and the second gear body is installed on the second bearing assembly.
In another preferred embodiment, further comprising: the outer side of the annular gear is provided with the third bearing assembly, and the pin shaft is arranged on the third bearing assembly.
By adopting the technical scheme, the utility model has the positive effects compared with the prior art that: by applying the utility model, the internal spline mounting and positioning structure suitable for the speed reducer is provided, and the accurate mounting and positioning of the internal spline is realized, so that the service life of the internal spline is further prolonged; the utility model has simple structure, convenient installation and strong stability.
Drawings
FIG. 1 is an overall schematic view of an internal spline mounting and positioning structure of the present utility model;
fig. 2 is a partial schematic view of an internal spline mounting and positioning structure of the present utility model.
In the accompanying drawings:
1. a gear shaft; 2. a first gear assembly; 3. a second gear assembly; 4. an internal spline; 5. an inner gear ring; 6. a first shaft portion; 7. a second shaft portion; 8. a first limit part; 9. a first limiting hole; 10. a third shaft portion; 11. a second limit part; 12. a second limiting hole; 13. a first spacer ring; 14. a second distance ring; 15. an extension; 16. an inner ring portion; 17. a first gear body; 18. a first bearing assembly; 19. a third set-distance ring; 20. a second gear body; 21. a second bearing assembly; 22. a third bearing assembly; 23. and a pin shaft.
Detailed Description
The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
As shown in fig. 1 and 2, there is shown an internal spline mounting location structure of a preferred embodiment, comprising: the gear shaft 1, the first gear assembly 2, the second gear assembly 3, the internal spline 4 and the annular gear 5 are sequentially sleeved on the gear shaft 1, the annular gear 5 is sleeved on the outer side of the internal spline 4, and the annular gear 5 is movably connected with the first gear assembly 2 or the second gear assembly 3 in a transmission mode. Further, the inner gear ring 5 and the inner spline 4 are connected through a straight-tooth cylindrical involute spline, and when the inner gear ring 5 is operably stirred onto the outer teeth of the first gear assembly 2 or the second gear assembly 3 along the axial direction, the inner spline 4 is driven by the rotation of the first gear assembly 2 or the second gear assembly 3 through the inner gear ring 5, and then the gear shaft 1 is driven by the inner spline 4 to rotate, so that power transmission is formed.
Further, as a preferred embodiment, the external teeth of the first gear assembly 2 are disposed at an end thereof adjacent to the internal spline 4, and the external teeth of the second gear assembly 3 are disposed at an end thereof adjacent to the internal spline 4.
Further, as a preferred embodiment, the gear shaft 1 includes at least: the first shaft part 6 and the second shaft part 7 that connect gradually, the external diameter of first shaft part 6 is greater than the external diameter of second shaft part 7, and on the second shaft part 7 was located to internal spline 4 cover, and the one end of internal spline 4 is formed with a first spacing portion 8 along the axial extension, and the inboard of first spacing portion 8 is formed with first spacing hole 9, and first spacing portion 8 cover is located on the first shaft part 6, and the internal diameter in first spacing hole 9 and the external diameter phase-match of first shaft part 6. Further, when the internal spline 4 is installed on the gear shaft 1, the first limiting hole 9 on the internal spline 4 is inserted by the first shaft part 6 of the gear shaft 1 until the first limiting part 8 is sleeved on the first shaft part 6, so that the internal teeth of the straight-tooth cylindrical involute spline on the internal spline 4 are precisely matched with the external teeth of the straight-tooth cylindrical involute spline on the gear shaft 1 through radial fit of the first limiting hole 9 and the first shaft part 6, so that accurate installation is achieved, the torque transmitted by each tooth of the internal spline 4 is more uniform, and the service lives of the internal spline 4 and the inner gear ring 5 can be effectively prolonged.
Further, as a preferred embodiment, the gear shaft 1 further includes: the third shaft part 10, the first shaft part 6, the second shaft part 7 and the third shaft part 10 are sequentially connected, the outer diameter of the third shaft part 10 is smaller than the outer diameter of the second shaft part 7, the other end of the internal spline 4 extends along the axial direction to form a second limiting part 11, a second limiting hole 12 is formed in the inner side of the second limiting part 11, the second limiting part 11 is sleeved on the third shaft part 10, and the inner diameter of the second limiting hole 12 is matched with that of the third shaft part 10.
Further, as a preferred embodiment, the second limiting hole 12 has an inner diameter smaller than that of the first limiting hole 9.
Further, as a preferred embodiment, the first shaft portion 6, the second shaft portion 7 and the third shaft portion 10 are sequentially connected in an integral shaft structure, a first shaft shoulder surface is formed between the first shaft portion 6 and the second shaft portion 7, and a second shaft shoulder surface is formed between the second shaft portion 7 and the third shaft portion 10.
Further, as a preferred embodiment, the first gear assembly 2 is sleeved on the first shaft portion 6, and the second gear assembly 3 is sleeved on the third shaft portion 10.
Further, as a preferred embodiment, the method further comprises: the first distance ring 13 is sleeved on the first shaft portion 6, and the first distance ring 13 is clamped between the first gear assembly 2 and the first limiting portion 8.
Further, as a preferred embodiment, the upper end of the first distance ring 13 preferably abuts against the lower end of the first bearing assembly 18 of the first gear assembly 2.
Further, as a preferred embodiment, the method further comprises: the second distance ring 14 is sleeved on the third shaft portion 10, and the second distance ring 14 is clamped between the second gear assembly 3 and the second limiting portion 11.
Further, as a preferred embodiment, the lower end of the second distance ring 14 preferably abuts against the upper end of the second bearing assembly 21 of the second gear assembly 3.
Further, as a preferred embodiment, the second limiting portion 11 includes: the inner ring part 16 is arranged on the inner side of the other end of the extension part 15, the inner ring part 16 is arranged in an extending mode along the radial direction, and a second limiting hole 12 is formed on the inner side of the inner ring part 16.
Further, as a preferred embodiment, the inner ring portion 16 is spaced apart from the second axial shoulder surface in the axial direction, and the inner wall of the extension portion 15 is spaced apart from the second axial portion 7 radially outwardly relative to the inner teeth of the inner spline 4. .
The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the embodiments and the protection scope of the present utility model.
The present utility model has the following embodiments based on the above description:
in a further embodiment of the utility model, the first gear assembly 2 comprises: a first gear body 17 and a first bearing assembly 18, the first bearing assembly 18 being mounted on the gear shaft 1, the first gear body 17 being mounted on the first bearing assembly 18.
In a further embodiment of the present utility model, the first bearing assembly 18 includes: the first bearing part, the second bearing part and the third distance ring 19 are sequentially sleeved on the gear shaft 1, and the third distance ring 19 is clamped between the first bearing part and the second bearing part. Further, preferably, the first bearing portion and the second bearing portion are each a single-row deep groove ball bearing structure.
In a further embodiment of the utility model, the first bearing part is connected to an upper part of the inner side of the first gear body 17 and the second bearing part is connected to a lower part of the inner side of the first gear body 17.
In a further embodiment of the utility model, the second gear assembly 3 comprises: a second gear body 20 and a second bearing assembly 21, the second bearing assembly 21 being mounted on the gear shaft 1, the second gear body 20 being mounted on the second bearing assembly 21.
In a further embodiment of the present utility model, the second bearing assembly 21 includes: a third bearing portion and a fourth bearing portion. Further, it is preferable that the third bearing portion and the fourth bearing portion are each a single-row deep groove ball bearing structure.
In a further embodiment of the utility model, a fourth distance ring is mounted between the third bearing part and the fourth bearing part.
In a further embodiment of the present utility model, further comprising: the outer side of the inner gear ring 5 is provided with a third bearing assembly 22 and a pin 23, and the pin 23 is mounted on the third bearing assembly 22. Further, the third bearing assembly 22 is preferably a single row deep groove ball bearing structure.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.
Claims (10)
1. An internal spline mounting and positioning structure, comprising: the gear comprises a gear shaft, a first gear assembly, a second gear assembly, an internal spline and an annular gear, wherein the first gear assembly, the internal spline and the second gear assembly are sequentially sleeved on the gear shaft, the internal gear is sleeved on the outer side of the internal spline, and the annular gear is movably connected with the first gear assembly or the second gear assembly in a transmission manner;
wherein, the gear shaft includes at least: the first shaft part and the second shaft part that connect gradually, the external diameter of first shaft part is greater than the external diameter of second shaft part, the internal spline cover is located on the second shaft part, just the one end of internal spline is formed with a first spacing portion along axial extension, the inboard of first spacing portion is formed with first spacing hole, first spacing portion cover is located on the first shaft part, the internal diameter of first spacing hole with the external diameter phase-match of first shaft part.
2. The internal spline mounting locating structure of claim 1, wherein said gear shaft further comprises: the first shaft part, the second shaft part and the third shaft part are connected in sequence, the outer diameter of the third shaft part is smaller than the outer diameter of the second shaft part, the other end of the internal spline extends along the axial direction to form a second limiting part, the inner side of the second limiting part is provided with a second limiting hole, the second limiting part is sleeved on the third shaft part, and the inner diameter of the second limiting hole is matched with the third shaft part.
3. The internal spline mounting location structure of claim 2, wherein the first gear assembly is sleeved on the first shaft portion and the second gear assembly is sleeved on the third shaft portion.
4. The internal spline mounting locating structure of claim 1, further comprising: the first distance ring is sleeved on the first shaft part and clamped between the first gear assembly and the first limiting part.
5. The internal spline mounting locating structure of claim 2, further comprising: the second distance ring is sleeved on the third shaft part and clamped between the second gear assembly and the second limiting part.
6. The internal spline mounting locating structure of claim 2, wherein said second stop portion comprises: the inner ring part is arranged on the inner side of the other end of the extension part in an extending mode, the inner ring part extends inwards in the radial direction, and a second limiting hole is formed in the inner side of the inner ring part.
7. The internal spline mounting locating structure of claim 1, wherein said first gear assembly comprises: the gear comprises a first gear body and a first bearing assembly, wherein the first bearing assembly is mounted on the gear shaft, and the first gear body is mounted on the first bearing assembly.
8. The internal spline mounting locating structure according to claim 7, wherein said first bearing assembly comprises: the gear comprises a gear shaft, a first bearing part, a second bearing part and a third distance ring, wherein the first bearing part, the third distance ring and the second bearing part are sequentially sleeved on the gear shaft, and the third distance ring is clamped between the first bearing part and the second bearing part.
9. The internal spline mounting locating structure of claim 1, wherein said second gear assembly comprises: the second gear body and the second bearing assembly are installed on the gear shaft, and the second gear body is installed on the second bearing assembly.
10. The internal spline mounting locating structure of claim 1, further comprising: the outer side of the annular gear is provided with the third bearing assembly, and the pin shaft is arranged on the third bearing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320011411.5U CN219198064U (en) | 2023-01-04 | 2023-01-04 | Internal spline installation positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320011411.5U CN219198064U (en) | 2023-01-04 | 2023-01-04 | Internal spline installation positioning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219198064U true CN219198064U (en) | 2023-06-16 |
Family
ID=86702210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320011411.5U Active CN219198064U (en) | 2023-01-04 | 2023-01-04 | Internal spline installation positioning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219198064U (en) |
-
2023
- 2023-01-04 CN CN202320011411.5U patent/CN219198064U/en active Active
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