CN205896120U - Acceleration rate type main reducer assembly - Google Patents
Acceleration rate type main reducer assembly Download PDFInfo
- Publication number
- CN205896120U CN205896120U CN201620877516.9U CN201620877516U CN205896120U CN 205896120 U CN205896120 U CN 205896120U CN 201620877516 U CN201620877516 U CN 201620877516U CN 205896120 U CN205896120 U CN 205896120U
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- China
- Prior art keywords
- differential
- gear
- type main
- bevel gear
- driven wheel
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an acceleration rate type main reducer assembly, including main reducer shell, the initiative taper gear, driven bevel gear and differential mechanism assembly, this the initiative taper gear establishes in the inner chamber of this main reducer shell, and this differential mechanism assembly includes the differential mechanism shell, and the both ends of this differential mechanism shell are passed through tapered roller bearing and are connected with this main reducer shell, and this driven bevel gear suit is outside this differential mechanism shell to with this the initiative taper gear meshing, this driven bevel gear is less than 1 with this initiative bevel gear's gear ratio. This acceleration rate type main reducer assembly's velocity ratio is lighter than 1, can reduce the velocity ratio of hub reduction bridge to adaptation automobile engine improves fuel economy to the trend of big moment of torsion, slow -speed of revolution development. Compare in through developing the velocity ratio that new little velocity ratio wheel reduction reduces the hub reduction bridge, acceleration rate type main reducer assembly's development period is shorter, and required development cost is also lower.
Description
Technical field
This utility model is related to a kind of main gearbox assembly and in particular to a kind of acceleration type main gearbox assembly.
Background technology
Drive axle is in the end of automobile power-transmission system, and its basic function is that main subtracting is passed through in the torque transmitting change speed gear box
Fast device, differential mechanism, semiaxis etc. pass to driving wheel, to realize the effect that reduction of speed increases square.More universal drive axle is wheel on the market
Side reduction axle, wheel-hub reduction axle is one kind of double reduction bridge, and its operation principle is that the torque transmitting change speed gear box passes to master
Decelerator, then torque is sequentially delivered to hub reduction gear and driving wheel from the outfan of main reducing gear.
At present, the electromotor of automobile develops towards high pulling torque, slow-revving direction, and the rotating speed of electromotor lower it is desirable to
The speed ratio of wheel-hub reduction axle also will and then reduce, and just can make automobile when reaching identical speed, improves fuel economy.Cause
This, the new little speed ratio wheel-hub reduction axle of necessary exploitation, to adapt to the development trend of high pulling torque wool(l)y-type engine.
The speed ratio of the speed ratio × hub reduction gear of the speed ratio=main reducing gear of wheel-hub reduction axle.So, new by developing
The conventional deceleration type main reducing gear of little speed ratio hub reduction gear cooperation, can reduce the speed ratio of wheel-hub reduction axle.
Refer to Fig. 1, it is the structural representation of deceleration type main gearbox assembly.Conventional deceleration type main gearbox assembly
Including final drive casing 10, drive bevel gear 11, driven wheel of differential 12, input shaft 13 and differential assembly.This drive bevel gear
In 11 inner chambers being located at this final drive casing 10, this input shaft 13 passes through this final drive casing 10 and this drive bevel gear 11 solid
Connect.This differential assembly includes differential carrier 140, and the two ends of this differential carrier 140 pass through a bearing and this main reducing gear respectively
Shell 10 connects.This driven wheel of differential 12 is sleeved on outside this differential carrier 140, and is bolted admittedly with this differential carrier 140
Fixed.This driven wheel of differential 12 is engaged with this drive bevel gear 11, and both gear ratios are more than 1, i.e. this deceleration type main reducing gear
The speed ratio of assembly is more than 1.
The cone angle of this drive bevel gear 11 is 43.83 ° (45 ° of ＜), and the cone angle of driven wheel of differential 12 is 46.17 ° of (＞
45 °), it is more than 1 with the speed ratio realizing this deceleration type main reducing gear, that is, the number of teeth of drive bevel gear 11 is less than driven wheel of differential 12
The number of teeth.So, in use, the cycle-index of drive bevel gear 11 rotation is more than driven for this deceleration type main gearbox assembly
The cycle-index of bevel gear 12.Generally in Tooth Form Optimizition, the transverse tooth thickness of drive bevel gear 11 can be made to be slightly larger than driven wheel of differential 12
Transverse tooth thickness, to mate the fatigue life of driving and driven bevel gear.
Although developing the speed ratio that new little speed ratio hub reduction gear can reduce wheel-hub reduction axle, need again to develop wheel
The parts of the hub reduction gears such as side gear, gear carrier, hub reducer casing, planetary gear and central gear, and these are new
Parts again all need to develop new casting, forging mold, greatly can extend the construction cycle, need to put into very big exploitation
Cost.
Utility model content
For the drawbacks described above of prior art, this utility model provides a kind of acceleration type main gearbox assembly, can achieve wheel
The reduction of side deceleration axle ratio, shortens the construction cycle simultaneously, reduces development cost.
The technical solution adopted in the utility model is:
Acceleration type main gearbox assembly, including final drive casing, drive bevel gear, driven wheel of differential and differential assembly,
This drive bevel gear is located in the inner chamber of this final drive casing, and this differential assembly includes differential carrier, and the two of this differential carrier
End is connected with this final drive casing, and this driven wheel of differential is sleeved on outside this differential carrier, and engages with this drive bevel gear；Should be from
Dynamic bevel gear is less than 1 with the gear ratio of this drive bevel gear.
Specifically, described driven wheel of differential and the gear ratio of described drive bevel gear are 0.96.
Specifically, the number of teeth of described driven wheel of differential is 24, and the number of teeth of described drive bevel gear is 25.
Specifically, this driven wheel of differential and this differential carrier are bolted fixation.
Specifically, this differential assembly also includes planetary gear shaft, four bevel planet gears, two axle shaft gears and two
Semiaxis；This planetary gear shaft is cross axle, is arranged in the inner chamber of this differential carrier, its four axis bodies are respectively embedded into this differential mechanism
The wall thickness of shell；This four bevel planet gears are arranged in this planetary gear shaft, and each bevel planet gear is respectively with described two half
Shaft gear engages；This two semiaxis are each passed through the two ends of this differential carrier, and pass through spline with this two axle shaft gears respectively
It is connected.Differential mechanism enables two side drive wheel with different rotational speed.
Further, also include the differential lock assembly in order to this differential assembly locked.
Specifically, this differential lock assembly includes slidably engaging set, stick, shift fork and helical spring；This final drive casing
It is provided with a groove, the both ends of this differential carrier are provided with multiple engaging tooths；This slidably engages set by spline package wherein
On one semiaxis, and can sliding axially along this semiaxis, this slidably engages to put and is provided with multiple engaging tooths, the plurality of engaging tooth with
Multiple engaging tooths of this differential carrier end are adapted and do not contact, and this slidably engages to put and is provided with cannelure；This stick sets
In the groove of this final drive casing, its two ends respectively with this final drive casing pivot joint；The head of this shift fork is arranged on this manipulation
On bar, its foot snaps in this and slidably engages in the cannelure of set；This helical spring is sleeved on this stick, its one end and this behaviour
Vertical pole abuts, and the other end is abutted with this final drive casing.The locked differential mechanism of differential lock energy, makes two driving wheels with identical rotating speed
Rotate.
The speed ratio of the acceleration type main gearbox assembly that this utility model provides is less than 1, it is possible to decrease the speed ratio of wheel-hub reduction axle,
To adapt to automobile engine to the trend of high pulling torque, slow-speed of revolution development, improve fuel economy.New little compared to by developing
Speed ratio hub reduction gear is shorter to reduce the speed ratio of wheel-hub reduction axle, the construction cycle of acceleration type main gearbox assembly, required
Development cost also lower it is only necessary to exploitation drive bevel gear, driven wheel of differential and differential carrier again, and new active conical tooth
Wheel, driven wheel of differential and differential carrier can borrow the blank corresponding to each part in original deceleration type main reducing gear completely to carry out adding
Work and it is not necessary to the additionally new casting of exploitation, forging mold.
In order to more fully understand and implement, describe this utility model below in conjunction with the accompanying drawings in detail.
Brief description
Fig. 1 is the structural representation of deceleration type main gearbox assembly.
Fig. 2 is the structural representation of acceleration type main gearbox assembly of the present utility model.
Specific embodiment
Refer to Fig. 2, it is the structural representation of acceleration type main gearbox assembly of the present utility model.
This acceleration type main gearbox assembly includes: final drive casing 20, drive bevel gear 21, driven wheel of differential 22, input
Axle 23, differential assembly and differential lock assembly.
This drive bevel gear 21 is located in the inner chamber of this final drive casing 20, and this input shaft 23 passes through this final drive casing 20
Affixed with this drive bevel gear 21.This driven wheel of differential 22 is engaged with this drive bevel gear 21.This driven wheel of differential 22 and this master
The gear ratio of dynamic bevel gear 21 is less than 1.Specifically, the number of teeth of this driven wheel of differential 22 is 24, the number of teeth of this drive bevel gear 21
For 25, that is, both gear ratios are 0.96.This final drive casing 20 is provided with a groove.
The cone angle of this drive bevel gear 21 is 46.17 ° (45 ° of ＞), and the cone angle of driven wheel of differential 22 is 43.83 ° of (＜
45 °), then can achieve that the speed ratio of this acceleration type main reducing gear is less than 1 (i=24/25=tan43.83 °=0.96), i.e. initiative taper
The number of teeth of gear 21 is more than the number of teeth of driven wheel of differential 22.Thus this acceleration type main gearbox assembly is in use, actively
The cycle-index of bevel gear 21 rotation is less than the cycle-index of driven wheel of differential 22.At this moment it is accomplished by, in Tooth Form Optimizition, making master
The transverse tooth thickness of dynamic bevel gear 21 is slightly smaller than the transverse tooth thickness of driven wheel of differential 22, to mate the fatigue life of driving and driven bevel gear.
This differential assembly includes differential carrier 240, planetary gear shaft 242, two semiaxis of 241, four bevel planet gears
Gear 243 and two semiaxis 244.The two ends of this differential carrier 240 pass through a taper roll bearing and this final drive casing respectively
20 connections.The both ends of this differential carrier 240 are provided with multiple engaging tooths.This driven wheel of differential 22 is sleeved on this differential carrier 240
Outward, and with this differential carrier 240 it is bolted fixation.This planetary gear shaft 241 is cross axle, is arranged on this differential carrier
In 240 inner chamber, the end of its four axis bodies is respectively embedded into the wall thickness of this differential carrier 240.This 242 points of four bevel planet gear
Be not arranged on four axis bodies of this planetary gear shaft 241, each bevel planet gear 242 respectively with described two axle shaft gears
243 engagements.This two axle shaft gears 243 are located in the inner chamber of this differential carrier 240.This two semiaxis 244 are each passed through this difference
The two ends of fast device shell 240, and fixed by spline connection with this two axle shaft gears 243 respectively.
Specific power transmission process is: the torque transmitted from change speed gear box passes to drive bevel gear 21 through input shaft 23,
Pass to driven wheel of differential 22 through drive bevel gear 21 again.This driven wheel of differential 22 drives this differential carrier 240 to rotate, then
This differential carrier 240 drives planetary gear shaft 241 and bevel planet gear 242 to rotate, and bevel planet gear 242 passes through axle shaft gear
243 drive semiaxis 244 rotate, and are exported torque by semiaxis 244.
This differential lock assembly includes slidably engaging set 250, stick 251, shift fork 252 and helical spring 253.
This slidably engages set 250 and passes through spline package wherein on a semiaxis 244, and can be along the axial direction of this semiaxis 244
Slide.This slidably engages set 250 and is provided with multiple engaging tooths, multiple the nibbling of the plurality of engaging tooth and this differential carrier 240 end
Close tooth to be adapted and do not contact.This slidably engages set 250 and is provided with cannelure.
This stick 251 is located in the groove of this final drive casing 20, its two ends respectively with this final drive casing 20 pivot joint.
This stick 251 can be along the axial movement of its own.
The head of this shift fork 252 is arranged on this stick 251, and its foot snaps in the cannelure that this slidably engages set 250
Interior.
This helical spring 253 is sleeved on this stick 251.One end of this helical spring 253 is supported with this stick 251
Connect, its other end is abutted with this final drive casing 20.
The operation principle of this differential lock assembly is: promotes this stick 251, this helical spring 253 is compressed, this shift fork
252 drive this to slidably engage the end that set 250 slides to this differential carrier 240, and this slidably engages multiple engaging tooths of set 250 and is somebody's turn to do
Multiple engagement indented joints of differential carrier 240 end, make to slidably engage, with this, semiaxis 244 and this differential carrier that set 250 is connected
240 formation are rigidly connected, and differential mechanism is locked, does not play differential action, and two semiaxis 244 are rotated with same speed, prevent from driving
Driving wheel skids；Do not promote this stick 251, this rotating spring not deformation, in original position, this slidably engages this shift fork 252
Set 250 is not contacted with this differential carrier 240, and differential mechanism plays differential action.
This utility model can have various deformation embodiment.For example, this planetary gear shaft 241 can use planetary gear
Frame, a word axle etc. replace；The number of this bevel planet gear 242 is not limited to four, can be also two, three etc..This stick 251
Can rely on manual or pneumatic with realize move, additionally, this differential lock can use friction-type, viscosity manifold type, Eton formula etc..
The speed ratio of the acceleration type main gearbox assembly that this utility model provides is less than 1, it is possible to decrease the speed ratio of wheel-hub reduction axle,
To adapt to automobile engine to the trend of high pulling torque, slow-speed of revolution development, improve fuel economy.New little compared to by developing
Speed ratio hub reduction gear is shorter to reduce the speed ratio of wheel-hub reduction axle, the construction cycle of acceleration type main gearbox assembly, required
Development cost also lower it is only necessary to exploitation drive bevel gear 21, driven wheel of differential 22 and differential carrier 240 again, then pass through
The softwares such as kimos are optimized to the transverse tooth thickness coupling amount of drive bevel gear 21 and driven wheel of differential 22 and design.And, new
Drive bevel gear 21, driven wheel of differential 22 and differential carrier 240 can borrow each part institute in original deceleration type main reducing gear completely
Corresponding blank is processed it is not necessary to additionally develop new casting, forging mold.
This acceleration type main gearbox assembly is conducive to the producer producing drive axle to comply with electromotor and send out to high pulling torque, the slow-speed of revolution
The trend of exhibition, greatly shortens the construction cycle and reduces development cost.
This utility model is not limited to above-mentioned embodiment, if do not taken off to various changes of the present utility model or deformation
From spirit and scope of the present utility model, if these are changed and deformation belongs to claim of the present utility model and equivalent technologies
Within the scope of, then this utility model is also intended to comprise these changes and deforms.
Claims (7)
1. acceleration type main gearbox assembly, including final drive casing, drive bevel gear, driven wheel of differential and differential assembly, should
Drive bevel gear is located in the inner chamber of this final drive casing, and this differential assembly includes differential carrier, the two ends of this differential carrier
It is connected with this final drive casing by taper roll bearing, this driven wheel of differential is sleeved on outside this differential carrier, and with this actively
Bevel gear engages；It is characterized in that: this driven wheel of differential is less than 1 with the gear ratio of this drive bevel gear.
2. acceleration type main gearbox assembly according to claim 1 it is characterised in that: described driven wheel of differential and described master
The gear ratio of dynamic bevel gear is 0.96.
3. acceleration type main gearbox assembly according to claim 2 it is characterised in that: the number of teeth of described driven wheel of differential is
24, the number of teeth of described drive bevel gear is 25.
4. the acceleration type main gearbox assembly according to any one of claim 1-3 it is characterised in that: this driven wheel of differential with
This differential carrier is bolted fixation.
5. acceleration type main gearbox assembly according to claim 4 it is characterised in that: this differential assembly also includes planet
Gear shaft, four bevel planet gears, two axle shaft gears and two semiaxis；This planetary gear shaft is cross axle, is arranged on this difference
In the inner chamber of fast device shell, its four axis bodies are respectively embedded into the wall thickness of this differential carrier；This four bevel planet gears are arranged on this row
On star gear shaft, each bevel planet gear is engaged with described two axle shaft gears respectively；This two semiaxis are each passed through this differential
The two ends of device shell, and fixed by spline connection with this two axle shaft gears respectively.
6. acceleration type main gearbox assembly according to claim 5 it is characterised in that: also include in order to this differential mechanism locked
The differential lock assembly of assembly.
7. acceleration type main gearbox assembly according to claim 6 it is characterised in that: this differential lock assembly includes slip and nibbles
Trap, stick, shift fork and helical spring；This final drive casing is provided with a groove, and the both ends of this differential carrier are provided with many
Individual engaging tooth；This slidably engages set by spline package wherein on a semiaxis, and can sliding axially along this semiaxis, this cunning
Dynamic engaging sleeve is provided with multiple engaging tooths, and the plurality of engaging tooth is adapted with multiple engaging tooths of this differential carrier end and does not connect
Touch, this slidably engages to put and is provided with cannelure；This stick is located in the groove of this final drive casing, its two ends respectively with this master
Reducing gearbox pivot joint；The head of this shift fork is arranged on this stick, and its foot snaps in this and slidably engages in the cannelure of set；Should
Helical spring is sleeved on this stick, and its one end is abutted with this stick, and the other end is abutted with this final drive casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877516.9U CN205896120U (en) | 2016-08-12 | 2016-08-12 | Acceleration rate type main reducer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877516.9U CN205896120U (en) | 2016-08-12 | 2016-08-12 | Acceleration rate type main reducer assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896120U true CN205896120U (en) | 2017-01-18 |
Family
ID=57780667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620877516.9U Withdrawn - After Issue CN205896120U (en) | 2016-08-12 | 2016-08-12 | Acceleration rate type main reducer assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205896120U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195225A (en) * | 2016-08-12 | 2016-12-07 | 广东富华重工制造有限公司 | Acceleration type main gearbox assembly |
| CN107120389A (en) * | 2017-06-16 | 2017-09-01 | 江苏安捷利机电科技有限公司 | A kind of special rear axle of electric automobile gear train |
| CN109611516A (en) * | 2018-12-19 | 2019-04-12 | 汽解放汽车有限公司 | A kind of drive axle double speed decelerator of planetary structure |
-
2016
- 2016-08-12 CN CN201620877516.9U patent/CN205896120U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195225A (en) * | 2016-08-12 | 2016-12-07 | 广东富华重工制造有限公司 | Acceleration type main gearbox assembly |
| CN106195225B (en) * | 2016-08-12 | 2018-09-07 | 广东富华重工制造有限公司 | Speed increaser assembly |
| CN107120389A (en) * | 2017-06-16 | 2017-09-01 | 江苏安捷利机电科技有限公司 | A kind of special rear axle of electric automobile gear train |
| CN109611516A (en) * | 2018-12-19 | 2019-04-12 | 汽解放汽车有限公司 | A kind of drive axle double speed decelerator of planetary structure |
| CN109611516B (en) * | 2018-12-19 | 2023-10-24 | 一汽解放汽车有限公司 | Driving axle double-speed reducer with planetary structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20180907 |
|
| AV01 | Patent right actively abandoned |