CN201521601U - Front drive axle bevel gear pair for 20HP tractors - Google Patents
Front drive axle bevel gear pair for 20HP tractors Download PDFInfo
- Publication number
- CN201521601U CN201521601U CN2009201288928U CN200920128892U CN201521601U CN 201521601 U CN201521601 U CN 201521601U CN 2009201288928 U CN2009201288928 U CN 2009201288928U CN 200920128892 U CN200920128892 U CN 200920128892U CN 201521601 U CN201521601 U CN 201521601U
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- CN
- China
- Prior art keywords
- bevel gear
- drive axle
- front drive
- gear pair
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a front drive axle bevel gear pair for a 20HP tractor, which comprises a driving bevel gear and a driven bevel gear. The front drive axle bevel gear pair designs and optimizes all parameters by aiming at structural characteristics of 20HP tractors, pitch diameters of a driving and a driven wheels are added, thereby achieving the effects of enlarging transverse modules and increasing face width of teeth. The front drive axle bevel gear pair increases total tooth depth of gear teeth and working depth of teeth, changes speed ratio (tooth ratio), is more applicable to bad operational environment, increases overlap coefficients to more stably rotate and lowers contact stress through. In addition, the front drive axle bevel gear pair adjusts carburized layers of gears, thereby enhancing abrasive resistance of products. The front drive axle bevel gear pair achieves the purpose of extending service lives of products and lowers noises.
Description
Technical field
The utility model relates to the vehicle transmission field of components, particularly a kind of front drive axle cone gear pair that is used for the 20HP tractor.
Background technique
Hypoid cone gear spoke is one of essential parts of tractor, mainly comprise drive bevel gear and driven wheel of differential, its major function is the moment of torsion that also increases power train when being used for reducing the rotating speed of power train, and the direction of transfer of change moment of torsion, so that power is reasonably passed to traveller, intention according to the operator is travelled, but existing being used to assembled the product of 20HP tractor because parameter designing is unreasonable, exist between the gear teeth impact bigger, cause transmission not steady, easily collapse problems such as tooth, add the complicated topographical conditions in area, China mountain area, so easy premature wear of this kind gear pair, working life is not high, and long-term frequent replacing not only causes bigger inconvenience to the user, has caused bigger economic loss simultaneously yet; In addition, also there is the higher problem of noise in this kind product in application.
The model utility content
In view of this, the utility model provides a kind of front drive axle cone gear pair of the 20HP of being used for tractor, to overcome the deficiency that existing product exists.
The purpose of this utility model provides a kind of front drive axle cone gear pair of the 20HP of being used for tractor, comprises drive bevel gear and driven wheel of differential, and its tooth portion parameter is:
The standard pitch diameter d of described drive bevel gear is 49.5mm, and addendum coefficient is 1.2, and addendum is 5.436mm, and the face width of tooth is 23mm, and its helix angle is 35 °;
The standard pitch diameter D of described driven wheel of differential is 175.5mm, and whole depth is 8.496mm, and addendum coefficient is 0.49, and the face width of tooth is 23mm, and helix angle is 35 °;
The tooth profile parameter of described front drive axle cone gear pair is:
Sideshake is 0.15～0.23mm; Working depth is 7.63mm, and whole depth coefficient is 1.882.
Further, the pressure angle of described driven wheel of differential is 25 °;
Further, described form factor also comprises:
The tooth ratio is 11: 39, and modulus is 4.5mm;
Described sideshake is 0.15mm;
Further, described drive bevel gear and driven wheel of differential are provided with carburized case, and described case depth is 0.8～1.2mm.
The beneficial effects of the utility model are:
1. the utility model is at the characteristics of travelling of 20HP tractor, under the situation that installing space allows, on selecting, parameter increased the standard pitch diameter of driven wheel, thereby reach transverse module is increased, the effect that the face width of tooth increases, the full-depth tooth that has increased the gear teeth simultaneously is dark, has increased Working depth; Make transmission more steady by increasing overlap coefficient, contact stress is descended; By changing speed ratio (tooth ratio), more can adapt to abominable operating environment;
2. the carburized layer depth of gear is adjusted, thereby improved the wear resistance of product, reached and prolong the product purpose in working life, reduced noise simultaneously.
Other advantages of the present utility model, target, to set forth in the following description to a certain extent with feature, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by following specification and claims.
Description of drawings
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is the structural representation of drive bevel gear;
Fig. 2 is the structural representation of driven wheel of differential;
Fig. 3 be Fig. 2 along A to schematic representation;
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection domain of the present utility model.
As Fig. 1 and Fig. 2 and shown in Figure 3, the front drive axle cone gear pair that is used for the 20HP tractor of the present utility model comprises drive bevel gear and driven wheel of differential, and its tooth portion parameter is:
The standard pitch diameter d of drive bevel gear is 49.5mm, and addendum coefficient is 1.2, and addendum is 5.436mm, and the face width of tooth is 23mm, and its helix angle is 35 °;
The standard pitch diameter D of driven wheel of differential is 175.5mm, and whole depth is 8.496mm, and addendum coefficient is 0.49, and the face width of tooth is 23mm, and helix angle is 35 °, and pressure angle is 25 °;
The tooth profile parameter of front drive axle cone gear pair is:
Sideshake is 0.15mm, and Working depth is 7.63mm, and whole depth coefficient is 1.882, and the tooth ratio is 11: 39, and modulus is 4.5mm.
For further improving wear resistance, drive bevel gear and driven wheel of differential are provided with carburized case 1, and described carburized case 1 degree of depth is 0.8～1.2mm.This degree of depth be operation characteristic according to product by calculating, differ from the processing parameter of existing product.
For increasing the working life of the gear teeth, the utility model has also adopted stress shot blasting technology that the flank of tooth is handled, and carries out gear lapping, thereby makes the product operation more steady, and noise is lower.
Through testing surface, the domestic steyr automobile drive axle bevel gear stand life test that adopts this product is from 3 * 10
5Inferiorly increased by 5.45 * 10
5Inferior, its improvement effect is very significant.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. be used for the front drive axle cone gear pair of 20HP tractor, comprise drive bevel gear and driven wheel of differential, it is characterized in that: its tooth portion parameter is:
The standard pitch diameter d of described drive bevel gear is 49.5mm, and addendum coefficient is 1.2, and addendum is 5.436mm, and the face width of tooth is 23mm, and its helix angle is 35 °;
The standard pitch diameter D of described driven wheel of differential is 175.5mm, and whole depth is 8.496mm, and addendum coefficient is 0.49, and the face width of tooth is 23mm, and helix angle is 35 °;
The tooth profile parameter of described front drive axle cone gear pair is:
Sideshake is 0.15～0.23mm, and Working depth is 7.63mm, and whole depth coefficient is 1.882.
2. the front drive axle cone gear pair that is used for the 20HP tractor according to claim 1, it is characterized in that: the pressure angle of described driven wheel of differential is 25 °;
3. the front drive axle cone gear pair that is used for the 20HP tractor according to claim 1, it is characterized in that: described form factor also comprises:
The tooth ratio is 11: 39, and modulus is 4.5mm;
Described sideshake is 0.15mm.
4. the front drive axle cone gear pair that is used for the 20HP tractor according to claim 1, it is characterized in that: described drive bevel gear and driven wheel of differential are provided with carburized case, and described case depth is 0.8～1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201288928U CN201521601U (en) | 2009-09-18 | 2009-09-18 | Front drive axle bevel gear pair for 20HP tractors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201288928U CN201521601U (en) | 2009-09-18 | 2009-09-18 | Front drive axle bevel gear pair for 20HP tractors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521601U true CN201521601U (en) | 2010-07-07 |
Family
ID=42507777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201288928U Expired - Fee Related CN201521601U (en) | 2009-09-18 | 2009-09-18 | Front drive axle bevel gear pair for 20HP tractors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291881A (en) * | 2012-02-29 | 2013-09-11 | 哈米尔顿森德斯特兰德公司 | Bevel gear for gearbox |
-
2009
- 2009-09-18 CN CN2009201288928U patent/CN201521601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291881A (en) * | 2012-02-29 | 2013-09-11 | 哈米尔顿森德斯特兰德公司 | Bevel gear for gearbox |
| CN103291881B (en) * | 2012-02-29 | 2016-02-03 | 哈米尔顿森德斯特兰德公司 | For the bevel gear of gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20100918 |