CN216692127U - Integral planetary gear train structural component - Google Patents
Integral planetary gear train structural component Download PDFInfo
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- CN216692127U CN216692127U CN202123162536.8U CN202123162536U CN216692127U CN 216692127 U CN216692127 U CN 216692127U CN 202123162536 U CN202123162536 U CN 202123162536U CN 216692127 U CN216692127 U CN 216692127U
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- planetary gear
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Abstract
An integrated planetary gear train structural component relates to the technical field of planetary gear reducers and is used for solving the existing technical problems. The integrated planetary gear train structural component is compact in structure and simple to assemble, integrates a planetary shaft and a planetary carrier in a casting or forging mode, integrates a planetary gear and a planetary gear inner bearing, and can effectively reduce the height of a planetary gear transmission system in the conventional planetary gear reducer; in addition, the number of parts is reduced, and the error accumulation caused by more parts is reduced, so that the mounting precision is effectively improved, the assembly efficiency of the planetary gear transmission system is improved, and the assembly cost is reduced.
Description
Technical Field
The utility model relates to the technical field of planetary gear reducers, in particular to an integrated planetary gear train structural component.
Background
At present, in the existing planetary gear reducer, a planetary shaft and a planetary carrier usually adopt a split structure; specifically, as shown in fig. 1, the needle bearing 1 is mounted in an inner hole of the planet wheel 2 and placed on the planet carrier 3, and the planet shaft 4 penetrates through the planet wheel 2 and the needle bearing 1 and is in interference connection with the planet carrier 3.
With the structure, the prior art mainly has the following defects: the planet shaft and the planet carrier need to be processed separately, the two are in interference connection, and the surface of the planet shaft needs to be hardened; the planet wheel inner bearing is a needle bearing, and the needle bearing is large in number, cannot be fixed and is easy to fall off; when the single-stage planetary gear transmission system is assembled, a planetary shaft and a heating planetary carrier need to be frozen firstly, then a planetary gear is placed on a hole corresponding to the planetary carrier, a circle of needle roller bearing is placed in an inner hole of the planetary gear, then the frozen planetary shaft penetrates through the planetary gear and the planetary carrier, and a check ring for a shaft is used for fixing, so that the assembly is complex and the efficiency is low; the number of parts is large, the accumulated error is large, and the meshing precision of the planetary gear is influenced.
Therefore, how to provide a novel planet carrier and planet wheel assembly structure component, which can make the structure compact and the assembly simple, has become a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integrated planetary gear train structural component, in particular to a casting or forging integrated planetary gear train structural component which is compact in structure and simple to assemble, wherein a planetary shaft and a planetary carrier are integrated into a whole in a casting or forging mode, a planetary gear and a planetary gear inner bearing are integrated, and the height of a planetary gear transmission system in the traditional planetary gear reducer can be effectively reduced; in addition, the number of parts is reduced, and the error accumulation caused by more parts is reduced, so that the mounting precision is effectively improved, the assembly efficiency of the planetary gear transmission system is improved, and the assembly cost is reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an integrated planetary gear train structural component comprising: the planet carrier, the planet wheel, the roller bearing, the wear-resistant gasket, the check ring for the hole and the check ring for the shaft;
the upper part and the lower part of an inner hole of the planet wheel are respectively provided with a first clamp spring groove, the two wear-resistant gaskets are respectively placed at the upper end and the lower end of the roller bearing, and the two retainer rings for holes are respectively placed at the outer sides of the two wear-resistant gaskets and are arranged in the first clamp spring groove in the inner hole of the planet wheel so as to assemble a planet wheel component;
the planet wheel component is arranged on the protruding shaft of the planet carrier, and the shaft retainer ring is arranged in the second clamp spring groove of the protruding shaft to compress the roller bearing, so that the axial limiting of the planet wheel component is realized.
The roller bearing is a roller bearing without an outer ring and is fixed to the planet wheel component through the first clamp spring and the wear-resistant gasket.
Specifically, the protruding shaft is a planet shaft, and the planet shaft and the planet carrier are integrated into a whole through casting or forging.
Furthermore, the planet wheel component is arranged on the planet carrier in an integrated mode, the planet carrier is cast or forged on the planet shaft, and the axial positioning of the planet wheel component is achieved through the second clamping spring.
Further, the roller bearing is arranged in a non-contact manner with the surface of the planet shaft.
Compared with the prior art, the integrated planetary gear train structural component has the following advantages:
in the integrated planetary gear train structural component, the first clamp spring groove is processed in the planetary gear, the roller bearing is placed in the first clamp spring groove, and the planetary gear component is assembled with the planetary gear through the retainer ring and the wear-resistant gasket for holes; meanwhile, the planet wheel component is arranged on the projecting shaft of the planet carrier, the second clamp spring groove is processed on the projecting shaft of the planet carrier, and the roller bearing is pressed by the retainer ring for the shaft, so that the axial limiting of the planet wheel component is realized.
Drawings
FIG. 1 is a schematic diagram of a planet carrier and planet wheel structure components provided in the prior art;
FIG. 2 is a schematic structural diagram of an integrated planetary gear train structural component provided by the embodiment of the utility model;
fig. 3 is a schematic structural diagram of a planetary wheel part in the integrated planetary wheel train structural component according to the embodiment of the utility model.
Reference numerals:
1-needle bearing; 2-a planet wheel; 3-a planet carrier; 31-a protruding shaft; 4-planet axis; 5-roller bearings; 6-wear resistant gasket; 7-retainer ring for hole; 8-a retainer ring for a shaft; 9-planetary wheel component.
Detailed Description
For convenience of understanding, the integrated planetary gear train structural component provided by the embodiment of the utility model is described in detail below with reference to the drawings in the specification.
An embodiment of the present invention provides an integrated planetary gear train structural component, as shown in fig. 2 and 3, including: the planet carrier 3, the planet wheel 2, the roller bearing 5, the wear-resistant gasket 6, the hole retainer ring 7 and the shaft retainer ring 8;
the upper part and the lower part of the inner hole of the planet wheel 2 are respectively provided with a first clamp spring groove (not shown in the figure), two wear-resistant gaskets 6 are respectively arranged at the upper end and the lower end of the roller bearing 5, two hole retainer rings 7 are respectively arranged at the outer sides of the two wear-resistant gaskets 6 and are arranged in the first clamp spring groove in the inner hole of the planet wheel 2 so as to assemble a planet wheel component 9;
the planet wheel member 9 is mounted on a projecting shaft 31 of the planet carrier 3 and is mounted in a second circlip groove (not shown) of the projecting shaft 31 using a shaft retainer ring 8 to compress the roller bearing 5 and achieve axial spacing of the planet wheel member 9.
Compared with the prior art, the integrated planetary gear train structural component has the following advantages:
in the integrated planetary gear train structural component provided by the embodiment of the utility model, as the planet gear 2 is internally processed with the first clamp spring groove, the roller bearing 5 is placed in the first clamp spring groove, and the planet gear component 9 is assembled with the planet gear 2 through the retainer ring 7 for holes and the wear-resistant gasket 6; meanwhile, the planet wheel component 9 is mounted on the protruding shaft 31 of the planet carrier 3, the protruding shaft 32 of the planet carrier 3 is provided with a second snap spring groove, the roller bearing 5 is pressed by the shaft retainer ring 8, and the axial limiting of the planet wheel component 9 is realized.
Wherein, above-mentioned roller bearing 5 is for not having outer lane roller bearing and through first jump ring and wear pad 6 realize with planet wheel 2 fixed for planet wheel part 9 to further effectively guarantee the compactedness of structure, and the part is small in quantity easily installs, and then has improved assembly efficiency by a wide margin.
Specifically, the protruding shaft 31 serves as a planet shaft, and the planet shaft (i.e., the protruding shaft 31) and the planet carrier 3 are integrated into a whole through casting or forging, so that the step of interference mounting by a temperature difference method in the prior art is omitted, the mounting method is further effectively simplified, accumulated errors caused by a plurality of parts are reduced, meanwhile, the cost of heating and freezing equipment in the prior art is saved, the heating and freezing time is saved, and the assembly efficiency is also effectively improved.
Further, the planet wheel component 9 is mounted on a cast or forged planet shaft (i.e. the protruding shaft 31) on the integrated planet carrier 3, and the axial positioning of the planet wheel component 9 is realized through the second snap spring, so that the assembly simplicity of the whole structure is further effectively ensured.
Furthermore, the roller bearing 5 is arranged in a non-contact manner with the surface of the planet shaft (namely, the protruding shaft 31), so that the surface of the planet shaft does not need to be hardened, and the processing and manufacturing cost of parts is further effectively saved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. An integrated planetary gear train structural member characterized by comprising: the planet carrier, the planet wheel, the roller bearing, the wear-resistant gasket, the check ring for the hole and the check ring for the shaft;
the upper part and the lower part of an inner hole of the planet wheel are respectively provided with a first clamp spring groove, the two wear-resistant gaskets are respectively placed at the upper end and the lower end of the roller bearing, and the two retainer rings for holes are respectively placed at the outer sides of the two wear-resistant gaskets and are arranged in the first clamp spring groove in the inner hole of the planet wheel so as to assemble a planet wheel component;
the planet wheel component is arranged on the protruding shaft of the planet carrier, and the shaft retainer ring is arranged in the second clamp spring groove of the protruding shaft to compress the roller bearing, so that the axial limiting of the planet wheel component is realized.
2. The integrated planetary gear train structural component according to claim 1, wherein the roller bearing is an outer race-less roller bearing and is fixed with the planet wheel to the planetary gear component by a first snap spring and the wear resistant washer.
3. The integrated planetary gear train structural component according to claim 1 or 2, wherein the protruding shaft is a planetary shaft, and the planetary shaft and the planetary carrier are integrated by casting or forging.
4. The integrated planetary gear train structural component according to claim 3, wherein the planetary gear component is mounted on the planetary shaft cast or forged on the integrated planetary carrier, and the axial positioning of the planetary gear component is achieved by a second snap spring.
5. The integrated planetary gear train structural component according to claim 4, wherein the roller bearing is provided in non-contact with the planetary shaft surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123162536.8U CN216692127U (en) | 2021-12-16 | 2021-12-16 | Integral planetary gear train structural component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123162536.8U CN216692127U (en) | 2021-12-16 | 2021-12-16 | Integral planetary gear train structural component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216692127U true CN216692127U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123162536.8U Active CN216692127U (en) | 2021-12-16 | 2021-12-16 | Integral planetary gear train structural component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216692127U (en) |
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2021
- 2021-12-16 CN CN202123162536.8U patent/CN216692127U/en active Active
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