CN218953955U - Differential mechanism planetary gear with wear-resistant bushing - Google Patents
Differential mechanism planetary gear with wear-resistant bushing Download PDFInfo
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- CN218953955U CN218953955U CN202320028757.6U CN202320028757U CN218953955U CN 218953955 U CN218953955 U CN 218953955U CN 202320028757 U CN202320028757 U CN 202320028757U CN 218953955 U CN218953955 U CN 218953955U
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- planetary gear
- bushing
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Abstract
The utility model provides a differential mechanism planetary gear with a wear-resistant bushing, which is characterized in that: the wear-resistant bushing is arranged in the central hole of the planetary gear, and the outer circle of the wear-resistant bushing and the central hole of the planetary gear form interference fit; the wear-resistant bushing comprises a high polymer material bushing and a copper sleeve, wherein the high polymer material bushing is arranged in a central hole of the copper sleeve, the outer circle of the high polymer material bushing and the central hole of the copper sleeve form interference fit, and a plurality of spiral oil grooves are formed in an inner hole of the high polymer material bushing. The utility model enhances the lubrication effect so as to reduce the abrasion of the inner hole and the pin shaft in the running process of the planet wheel.
Description
Technical Field
The utility model belongs to the field of automobile differential planetary gear structures, and particularly relates to a differential planetary gear technical scheme with a wear-resistant bushing.
Background
The current automobile differential planetary gear, its hole is the unthreaded hole usually, and hole and planet wheel round pin axle cooperation, and at planet wheel during operation, planet wheel hole and planet wheel round pin axle produce relative rotation, and here get into the planet wheel hole through lubricating oil splash and the cooperation clearance of round pin axle and lubricate and dispel the heat to it, but under heavy load and high rotational speed circumstances, here hardly gets into lubricating oil, is difficult to form good lubricating oil film, very easily leads to planet wheel hole and round pin axle to produce the ablation sintering, can lead to even whole differential assembly to damage.
There are schemes of oil grooves in the planet wheel inner hole at present, and also technical schemes of nesting copper sleeves in the inner hole, wherein the oil grooves are formed to improve the effect of lubricating oil entering the planet wheel inner hole, and the nesting copper sleeves in the inner hole are used to reduce abrasion.
In the current technical scheme of the planetary gear of the differential mechanism, the lubrication effect is worst only by the scheme of the clearance lubrication between the smooth hole of the inner hole and the pin shaft, and the technical scheme of adding a lubrication groove or embedding a copper sleeve in the inner hole of the planetary gear can improve the lubrication effect and reduce the abrasion, but under the working condition of high load and high rotating speed, the stress of the matching surface of the inner hole of the planetary gear and the pin shaft of the planetary gear is large, the rising of the rotating speed leads to rapid rising of the temperature, the situation of severe abrasion and ablation of the inner hole of the planetary gear and the pin shaft of the planetary gear still exists, and worn metal scraps are easy to mix into the lubrication oil, so that the cleanliness of an automobile gear box where the differential mechanism is positioned is damaged, and other parts are invalid.
Disclosure of Invention
The utility model provides a differential planetary gear with a wear-resistant bushing, which aims to enhance the lubrication effect so as to reduce the abrasion of an inner hole and a pin shaft in the running process of a planetary gear.
The technical scheme adopted for solving the technical problems is as follows:
the differential mechanism planetary gear with the wear-resistant bushing is arranged in a central hole of the planetary gear, and the outer circle of the wear-resistant bushing is in interference fit with the central hole of the planetary gear;
the wear-resistant bushing comprises a high polymer material bushing and a copper sleeve, wherein the high polymer material bushing is arranged in a central hole of the copper sleeve, the outer circle of the high polymer material bushing and the central hole of the copper sleeve form interference fit, and a plurality of spiral oil grooves are formed in an inner hole of the high polymer material bushing.
Further, the polymer material bushing is a polyether-ether-ketone material.
Further, the spiral oil groove is a bidirectional spiral oil groove.
The beneficial effects are that:
according to the utility model, by adopting the scheme of combining the high polymer material bushing with the copper bush and processing the spiral oil groove, friction metal scraps are avoided by matching the high polymer material bushing with the planetary gear pin shaft, and meanwhile, the high polymer material has the properties of wear resistance and high temperature resistance and can be more suitable for the working conditions of high load and high rotation speed.
Drawings
FIG. 1 is a cross-sectional view of the present utility model in combination with a central bore of a planetary gear;
fig. 2 is a cross-sectional view of the present utility model.
[ reference numerals description ]
In the figure: 1: a planetary gear; 2: wear-resistant bushings; 3: a polymer material bushing; 4: a spiral oil groove; 5: copper sleeve.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art. In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1 and 2:
the planetary gear of the differential mechanism consists of a planetary gear 1 and a wear-resistant bushing 2, wherein the wear-resistant bushing 2 is pressed into a central hole of the planetary gear 1, and the outer circle of the wear-resistant bushing 2 and the central hole of the planetary gear 1 form interference fit.
The structure of the wear-resistant bushing 2 consists of a high polymer material bushing 3 and a copper sleeve 5, wherein the high polymer material bushing 3 is arranged in a central hole of the copper sleeve 5, the outer circle of the high polymer material bushing 3 and the central hole of the copper sleeve 5 form interference fit, a plurality of spiral oil grooves 4 are processed in an inner hole of the high polymer material bushing 3, and the high polymer material bushing 3 is made of polyether-ether-ketone (PEEK) material, so that the wear-resistant bushing has the advantages of high temperature resistance, wear resistance and the like.
When in use, the utility model is characterized in that:
the assembled wear-resistant bushing 2 is pressed into a central hole of the planetary gear 1, then the planetary gear 1 is assembled in a differential, an inner hole of the planetary gear 1 is in clearance fit with a planetary gear pin shaft, the planetary gear 1 rotates around the planetary gear pin shaft in the working process of the differential, lubricating oil can fully enter a matching surface of the inner hole of the planetary gear 1 and the planetary gear pin shaft along a spiral oil groove 4 in the wear-resistant bushing 2, the lubricating effect is improved, and meanwhile, the wear between the matching surfaces can be reduced by the high polymer material bushing 3.
In other embodiments, the polymer material bushing 3 may be made of a polymer material other than PEEK.
The structure of the spiral oil groove 4 may be other forms, such as a bidirectional spiral oil groove or the like.
In the running process of the planetary gear, a good lubricating effect can be formed between the inner hole of the planetary gear and the planetary gear pin shaft, and the planetary gear is more wear-resistant, so that the friction temperature between the inner hole of the planetary gear and the planetary gear pin shaft is reduced, and the risk of damage to the planetary gear is reduced.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The utility model provides a take wear-resisting bush's differential mechanism planetary gear which characterized in that: the wear-resistant bushing is arranged in the central hole of the planetary gear, and the outer circle of the wear-resistant bushing and the central hole of the planetary gear form interference fit; the wear-resistant bushing comprises a high polymer material bushing and a copper sleeve, wherein the high polymer material bushing is arranged in a central hole of the copper sleeve, the outer circle of the high polymer material bushing and the central hole of the copper sleeve form interference fit, and a plurality of spiral oil grooves are formed in an inner hole of the high polymer material bushing.
2. A wear-resistant lined differential planet gear as defined in claim 1, wherein: the polymer material bushing is made of polyether-ether-ketone material.
3. A wear-resistant lined differential planet gear as defined in claim 1, wherein: the spiral oil groove is a bidirectional spiral oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028757.6U CN218953955U (en) | 2023-01-06 | 2023-01-06 | Differential mechanism planetary gear with wear-resistant bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028757.6U CN218953955U (en) | 2023-01-06 | 2023-01-06 | Differential mechanism planetary gear with wear-resistant bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218953955U true CN218953955U (en) | 2023-05-02 |
Family
ID=86105553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320028757.6U Active CN218953955U (en) | 2023-01-06 | 2023-01-06 | Differential mechanism planetary gear with wear-resistant bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218953955U (en) |
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2023
- 2023-01-06 CN CN202320028757.6U patent/CN218953955U/en active Active
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