CN204592206U - Helical bevel gear differential mechanism - Google Patents
Helical bevel gear differential mechanism Download PDFInfo
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- CN204592206U CN204592206U CN201520182820.7U CN201520182820U CN204592206U CN 204592206 U CN204592206 U CN 204592206U CN 201520182820 U CN201520182820 U CN 201520182820U CN 204592206 U CN204592206 U CN 204592206U
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Abstract
The utility model discloses a kind of helical bevel gear differential mechanism, it comprises housing, wheel shaft, differential gear, planetary pinion, bevel gear wheel, mandrel, bevel pinion and dead axle.Described housing side is fixedly connected with bevel gear wheel, and the bevel pinion that dead axle axle head is installed engages with bevel gear wheel.Two cross through hole of housing install a wheel shaft respectively, and the wheel shaft inside stretched is equipped with differential gear, and mandrel runs through two longitudinal holes and two planetary pinions, and two planetary pinions rotated around mandrel engage with two differential gears respectively and form differential speed rotation mechanism.In order to strengthen the bearing capacity of differential mechanism built-in planetary gear and differential gear, improve transmission balance, and reduce mesh vibration and noise, built-in planetary pinion and differential gear adopt short tooth system and make the helical bevel gear of correction of the flank shape.Although teeth portion helix angle is little, have 3 tooth synchromeshs at least during teeth portion engagement, this kind of high contact ratio reduces engagement and nibbles out impact, thus improves transmission stability.
Description
Technical field
The utility model relates to a kind of speed reduction gearing, and specifically, the utility model relates to a kind of differential mechanism of supporting automobile, particularly a kind of helical bevel gear differential mechanism of built-in helical bevel gear.
Background technique
Differential mechanism is the speed reducer of car, engineering vehicle and agri-vehicle indispensability, and it is configured in ransaxle for differential drive.The critical piece of differential mechanism is a pair planetary pinion and a pair differential gear, and planetary pinion and the differential gear of symmetric arrays engage each other.The planetary pinion that commercially available helical bevel gear differential mechanism is supporting and differential gear are all straight bevel gears, traditional straight bevel gear designing technique relative maturity, and profile of tooth is also very simple, and the industry adopts study on precision forging technology easily to realize High-efficient Production.Although the straight bevel gear of prior art manufacture can reach differential drive requirement, matching quality is difficult to reach expection requirement.It is instantaneous linear contact lay that particular problem is embodied in when straight bevel gear engages, and flank engagement contact ratio is little, and transmission stability is good not, and vibration and noise are difficult to up to standard, and these obvious shortcomings form the supporting obstacle of car loads.Such as, engineering vehicle and agri-vehicle transmitting torque relatively large, the straight bevel gear designed routinely because of flank engagement contact ratio little, therefore bearing capacity is inadequate.In order to overcome the supporting planetary pinion of existing differential mechanism and the perishable problem of differential gear, the industry generally adopts the scheme adding big gearing part design to strengthen bearing capacity, and program shortcoming is the increase in the volume of differential mechanism.Car is a kind of traffic tool higher to riding comfort requirement, and vehicle manufacturers has high requirements to the supporting planetary pinion of differential mechanism and differential gear accuracy of manufacturing, although technique requires very correct, its cost greatly increases manufacture difficulty.Particularly the existing forging of the industry does not reach highi degree of accuracy processing request, if the maturation of abandoning and the forging of High-efficient Production, using other formed machining technique instead will inevitably increase manufacture cost.
Model utility content
The utility model, mainly for the deficiency of the supporting straight bevel gear of commercially available differential mechanism, proposes the helical bevel gear differential mechanism that a kind of helical bevel gear substitutes straight bevel gear.The supporting helical bevel gear flank engagement contact ratio of this helical bevel gear differential mechanism is large, can reach several to engage tooth simultaneously, significantly strengthen bearing capacity thus, and improve transmission balance, reduce vibration and level of noise, the most important thing is to use existing forging High-efficient Production.
The utility model is achieved through the following technical solutions technical goal.
Helical bevel gear differential mechanism, it comprises housing, wheel shaft, differential gear, planetary pinion, bevel gear wheel, mandrel, bevel pinion and dead axle.Described housing one side is fixedly connected with bevel gear wheel, and the bevel pinion that dead axle axle head is installed engages with bevel gear wheel, and the bevel pinion introducing power drives bevel gear wheel and housing to rotate in the lump.Housing is built-in mutually vertically and run through the through hole of wall respectively, two coaxial cross through hole each installation wheel shaft respectively, one end that wheel shaft stretches into housing cavity is equipped with differential gear, mandrel runs through two longitudinal holes and two planetary pinions, two planetary pinions rotated around mandrel engage with two differential gears respectively, composition differential speed rotation structure.Its improvements are: described planetary pinion and differential gear are a kind of short tooth system and make the helical bevel gear of correction of the flank shape.
Helix angle after described planetary pinion and differential gear correction of the flank shape is 1
0~ 3
0, pressure angle is 22.5
0~ 25
0.
The utility model compared with prior art, has following good effect:
1, during helical bevel gear engagement be face contact, thus strengthening teeth portion bearing capacity, under equal bearing capacity, structure is compacter;
2, the helical bevel gear tooth of correction of the flank shape is short, and helix angle is little, and pressure angle is large, and helical bevel gear differential mechanism face width of tooth in bevel gears and hypoid gears used is general less, completely can with the efficient formed machining of existing forging;
3, helical bevel gear is multiple tooth common engagement, mesh impact and to nibble out impact little, therefore significantly reduces vibration & noise value, reaches the supporting requirement of Designing Passenger Car Differentials.
Accompanying drawing explanation
Fig. 1 is the utility model structural profile schematic diagram.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Helical bevel gear differential mechanism shown in Fig. 1, it comprises housing 1, wheel shaft 2, differential gear 3, planetary pinion 4, bevel gear wheel 5, mandrel 6, bevel pinion 7 and dead axle 8.Described housing 1 is main component, is fixedly connected with bevel gear wheel 5 at housing 1 left surface, and the bevel pinion 7 that dead axle 8 axle head is installed engages with gearwheel 5 and forms reducing gear.Drive differential mechanism power by bevel pinion 7 cause into, bevel pinion 7 drives bevel gear wheel 5 and housing 1 to rotate in the lump.Housing 1 is built-in mutually vertically and run through the through hole of wall respectively, and two coaxial cross through hole each installation wheel shaft 2 respectively, one end that wheel shaft 2 stretches into housing 1 inner chamber is equipped with differential gear 3.Mandrel 6 is axles, and it runs through two longitudinal holes and two planetary pinions 4, and two planetary pinions 4 rotated around mandrel 6 engage with two differential gears 3 respectively, directly forms differential speed rotation mechanism.In order to strengthen the bearing capacity of differential mechanism built-in planetary gear 4 and differential gear 3, improve transmission stability, and reduce mesh vibration and noise, the planetary pinion 4 configured in the utility model and differential gear 3 adopt short tooth system and make the helical bevel gear of correction of the flank shape.The present embodiment is the differential mechanism of supporting car, because car requires relatively high to transmission balance, therefore the mesh vibration of keep under strict control planetary pinion 4 and differential gear 3 and noise.For above-mentioned concrete condition, the helical bevel gear of the utility model to configuration does necessary correction of the flank shape, and the helix angle in the present embodiment after planetary pinion 4 and differential gear 3 correction of the flank shape is 1.3
0, pressure angle 23
0.Although relatively little through the helical bevel gear helix angle of correction of the flank shape, but have 3 tooth synchromeshs at least during teeth portion engagement, this kind of high contact ratio engagement greatly reduces mesh impact and nibbles out impact, thus improve transmission stability, less than the vibration of traditional straight bevel gear differential mechanism, reduce noise 10dB, reach the supporting requirement of car completely.
On the other hand, short tooth helical bevel gear in the utility model is after correction of the flank shape, and existing forging, with less, can be directly applied to the production of helical bevel gear by teeth portion helix angle, this architecture advances neither increases manufacture difficulty thus, does not also increase manufacture cost.
Claims (2)
1. a helical bevel gear differential mechanism, it comprises housing (1), wheel shaft (2), differential gear (3), planetary pinion (4), bevel gear wheel (5), mandrel (6), bevel pinion (7) and dead axle (8); Described housing (1) side is fixedly connected with bevel gear wheel (5), and the bevel pinion (7) that dead axle (8) axle head is installed engages with bevel gear wheel (5), and the bevel pinion (7) introducing power drives bevel gear wheel (5) and housing (1) to rotate in the lump; Housing (1) is built-in mutually vertically and run through the through hole of wall respectively, two coaxial cross through hole each installation wheel shaft (2) respectively, one end that wheel shaft (2) stretches into housing (1) inner chamber is equipped with differential gear (3), mandrel (6) runs through two longitudinal holes and two planetary pinions (4), two planetary pinions (4) rotated around mandrel (6) are engaged with two differential gears (3) respectively, composition differential speed rotation structure; It is characterized in that: described planetary pinion (4) and differential gear (3) are a kind of short tooth system and make the helical bevel gear of correction of the flank shape.
2. helical bevel gear differential mechanism according to claim 1, is characterized in that: the helix angle after described planetary pinion (4) and differential gear (3) correction of the flank shape is 1
0~ 3
0, pressure angle is 22.5
0~ 25
0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182820.7U CN204592206U (en) | 2015-03-30 | 2015-03-30 | Helical bevel gear differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182820.7U CN204592206U (en) | 2015-03-30 | 2015-03-30 | Helical bevel gear differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204592206U true CN204592206U (en) | 2015-08-26 |
Family
ID=53928359
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520182820.7U Active CN204592206U (en) | 2015-03-30 | 2015-03-30 | Helical bevel gear differential mechanism |
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|---|---|
| CN (1) | CN204592206U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806724A (en) * | 2015-03-30 | 2015-07-29 | 江苏太平洋齿轮传动有限公司 | Automobile differential mechanism |
| CN107585022A (en) * | 2016-07-08 | 2018-01-16 | 阿文美驰技术有限责任公司 | Vehicle bridge component with spring bearing component |
| CN108413005A (en) * | 2018-05-07 | 2018-08-17 | 江苏太平洋齿轮传动有限公司 | Using the high-precision differential mechanism of elastic element |
| CN109099133A (en) * | 2017-06-21 | 2018-12-28 | 株式会社捷太格特 | Differential gear |
-
2015
- 2015-03-30 CN CN201520182820.7U patent/CN204592206U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806724A (en) * | 2015-03-30 | 2015-07-29 | 江苏太平洋齿轮传动有限公司 | Automobile differential mechanism |
| CN107585022A (en) * | 2016-07-08 | 2018-01-16 | 阿文美驰技术有限责任公司 | Vehicle bridge component with spring bearing component |
| CN109099133A (en) * | 2017-06-21 | 2018-12-28 | 株式会社捷太格特 | Differential gear |
| CN108413005A (en) * | 2018-05-07 | 2018-08-17 | 江苏太平洋齿轮传动有限公司 | Using the high-precision differential mechanism of elastic element |
| WO2019214227A1 (en) * | 2018-05-07 | 2019-11-14 | 江苏太平洋精锻科技股份有限公司 | High-precision differential using elastic members |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |