CN205331352U - Spur gear differential mechanism - Google Patents
Spur gear differential mechanism Download PDFInfo
- Publication number
- CN205331352U CN205331352U CN201620060929.8U CN201620060929U CN205331352U CN 205331352 U CN205331352 U CN 205331352U CN 201620060929 U CN201620060929 U CN 201620060929U CN 205331352 U CN205331352 U CN 205331352U
- Authority
- CN
- China
- Prior art keywords
- gear
- planetary
- sun
- spur
- ring
- 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.)
- Active
Links
Landscapes
- Retarders (AREA)
Abstract
The utility model relates to a spur gear differential mechanism. The utility model aims at providing a structural arrangement is compact, can adapt to high rotational speed operating mode, smooth operation, and lubricated good noise is lower, the lower spur gear differential mechanism of cost. The utility model provides a: have and form the casing by the zuohang star gear frame of fixing each other together with the star gear frame of walking on the right side, connect differential mechanism to support on the casing, be equipped with sun wheelset and two couples of planetary gear set in the casing, sun wheelset comprises the coaxial left sun gear of arranging and right sun gear, and left sun gear is through II rotatable coupling zuohang star gear framves of bush, and right sun gear is through I rotatable coupling of the bush star gear frame of walking on the right side, two couples of planetary gear set symmetrical arrangement are on using the circumference of sun wheelset axle center as the center, and each has two planetary gear to planetary gear set, and planetary gear has the gear shaft, and gear shaft middle section system has ring gear I, and one end system has ring gear II, and the gear shaft both ends are rotatable to be connect on left and right planet wheel carrier.
Description
Technical field
This utility model relates to a kind of spur-gear differential。Suitable in motor drive axle drive system。
Background technology
At present, drive axle generally adopts the straight bevel gear differential mechanism of classics, its compact conformation, technology maturation, manufactures installation all relatively simple, and universal component degree is high, is mainly used in low-speed heave-load condition。Owing to motor drive axle differential mechanism is directly connected to the characteristic of motor high-speed output end, at high speed, the impact that the mismatch error of the engaging of straight bevel gear differential mechanism sun gear and planetary gear, the coordinating of sun gear and output shaft, the coordinating of sun gear and housing, planetary gear and housing causes all will be exaggerated, and cause the abrasion of gear, the abrasion in shaft hole matching face, the increase of noise, the shortening of life-span。For reaching performance requirement, it is necessarily required to the manufacture to differential mechanism and installation accuracy has higher requirement, thus improve the manufacturing cost of differential mechanism。
In order to meet the characteristic of differential mechanism height rotating speed output, substituting straight bevel gear with straight spur gear, it is ensured that the precision of gear manufacture and installation, it is ensured that under high rotating speed, gear engages uniformly and exports with stable power。Motor drive axle motor account for major part space, it is provided that generally less to the space of differential mechanism, thus differential mechanism must to be fulfilled for apparent size relatively small, at contrast angular wheel differential mechanism, be mainly reflected on axial dimension。On axial dimension, being mainly reflected in again on wheel tooth width, wheel tooth width is for judging the standard of transmission torque, and gear teeth meshing is more wide, it is possible to the torque of transmission is more big, and the width of gear teeth meshing design, then differential mechanism is accomplished by more structure space in the axial direction。
Summary of the invention
The technical problems to be solved in the utility model is: for above-mentioned Problems existing, it is provided that a kind of structure characteristics of compact layout, adapts to high speed conditions, smooth running, lubricates good noise relatively low, lower-cost spur-gear differential。
This utility model be the technical scheme is that a kind of spur-gear differential, there is housing, housing is connected to differential mount, it is characterized in that: described housing is made up of the left lateral star wheel frame being fixed to one another together and right lateral star wheel frame, in this housing, be provided with sun wheels and two pairs of planetary gearsets；
Sun wheels are made up of coaxially arranged left sun gear and right sun gear, and left sun gear is rotatably connected left lateral star wheel frame through lining II, and right sun gear is rotatably connected right lateral star wheel frame through lining I；
Two pairs of planetary gearsets are symmetrically arranged on the circumference centered by sun wheels axle center, every a pair planetary gearsets has two planetary gears, planetary gear adopts straight spur gear, this planetary gear has gear shaft, gear shaft stage casing is shaped with gear ring I, this gear shaft one end is shaped with gear ring II, in every pair of planetary gearsets, two planetary gear rings I engage with gear ring I, wherein a planetary gear ring II engages with left sun gear, another planetary gear ring II engages with right sun gear, and described gear shaft two ends are rotatably connected on left and right planetary wheel carrier。
Described left sun gear one end is rotatably connected with one end of right sun gear。
Described gear shaft completely fills needle bearing with the employing that coordinates of left and right planetary wheel carrier。
Described gear shaft upper ring gear I is connected with gear ring II。
The registration engaged between described planetary gear with left and right sun gear, between planetary gear and planetary gear reaches more than 1.2。
The beneficial effects of the utility model are: this utility model adopts straight spur gear to substitute bevel gear, while realizing car load differential, reduces the manufacture installation accuracy of parts, improves gear meshing shape condition。Adopting two to planetary gearsets, can meet loading demands, save again radial space, wherein planetary gear ring is processed as one around the axle of rotation with it, namely ensure that intensity, also reduces process and assemble difficulty, also ensure that radial space is sufficiently compact simultaneously。Two pairs of planetary gearsets are symmetrical around revolution center, being spaced apart, the structure division holding housing connection carrying is enough designed in the space separated, and so both can ensure that differential mechanism overall dimensions is unlikely to excessive, gear can be made again to be in open state, it is simple to the lubrication of gear。Gear shaft rotation is no longer sliding friction relative to housing, and is the increase in full dress needle bearing, makes friction type become sliding friction, thus meeting the durable smooth-going that high rotating speed lower planetary gear axle rotates, it is to avoid the abrasion of axis hole。
Accompanying drawing explanation
Fig. 1 is generalized section of the present utility model。
Fig. 2 is I-I sectional view of Fig. 1。
Fig. 3 is II-II sectional view of Fig. 1。
Fig. 4 is III-III sectional view of Fig. 1。
Fig. 5 is planetary structural representation in this utility model。
Detailed description of the invention
As shown in Figure 1 to 4, the present embodiment is a kind of spur-gear differential, including 10, housing of a differential mount, and it is arranged at a pair sun wheels in housing and two pairs of planetary gearsets, housing is made up of left lateral star wheel frame 1 and right lateral star wheel frame 7, and differential mount 10, left lateral star wheel frame 1 and right lateral star wheel frame 7 are fixing by alignment pin location。
In the present embodiment, sun wheels are made up of with right sun gear 6 left sun gear 8, left and right both sun gears 8,6 are coaxially arranged, and left sun gear 8 one end is rotatably connected with one end of right sun gear 6, left sun gear 8 other end is rotatably connected left lateral star wheel frame 1 through lining II 9, and the other end of right sun gear 6 is rotatably connected right lateral star wheel frame 7 through lining I 5。
In this example, two pairs of planetary gearsets are located on the circumference centered by sun wheels axle center, and are arranged symmetrically with around sun wheels eccentric axial。Every a pair planetary gearsets has two planetary gears 2, planetary gear 2 adopts straight spur gear, as it is shown in figure 5, this planetary gear has gear shaft 21, gear shaft stage casing is shaped with gear ring I 22, and this gear shaft one end is shaped with gear ring II 23 (gear ring I 22 is connected) with gear ring II 23。In every pair of planetary gearsets, the gear ring I of planetary gear 2 engages with the gear ring I on another planetary gear 2, and the gear ring II of one of them planetary gear 2 engages with left sun gear 8, and the gear ring II of another planetary gear 2 engages with right sun gear 6。The two ends of the present embodiment middle gear axle 21 are rotatably connected on left and right planetary wheel carrier 1,7 respectively by completely dress needle bearing 4。
The registration engaged between planetary gear 2 with left and right sun gear 8,6, between planetary gear 2 and planetary gear 2 in the present embodiment reaches more than 1.2。
The power transmission route of the present embodiment is: connected the power of input motor by spline by differential mount 10, left sun gear 8, right sun gear 6 connect the left and right output shaft difference output power of wheel to left and right by spline。Drive state and the corresponding running status of each parts are divided into two kinds:
One is not differential state: vehicle is when smooth-riding surface straight-line travelling, now the left and right two ends of planetary gearsets are in poised state, planetary gear 2 not rotation, only along with housing revolves round the sun around sun wheels axle center, left and right sun gear 8,6 angular velocity is equal to differential casing angular velocity, and namely left and right driving wheel is also with identical angular velocity motion。
Another kind of state is differential state: Ackermann steer angle, now planetary gearsets is left, right two ends poised state is broken, planetary gear 2 not only revolves round the sun around sun wheels axle center with peripheral speed ω 1 with housing, simultaneously also with ω 2 around its central axis rotation, intermeshing a pair planetary gear 2 peripheral speed is equal, in opposite direction, now left, right sun gear 8, the output peripheral speed of 6 is ω 3=ω 1+ ω 2 respectively, ω 4=ω 1-ω 2, thus can obtain ω 3+ ω 4=(ω 1+ ω 2)+(ω 1-ω 2)=2 ω 1, namely left and right sides sun gear rotating speed sum is equal to differential casing rotating speed 2 times, and it is unrelated with planetary gear 2 rotating speed。This symmetrical expression bevel differential kinetic characteristic equal with two-semiaxle gear diameter is consistent, also can realize same differential effect。
Claims (5)
1. a spur-gear differential, there is housing, housing is connected to differential mount (10), it is characterized in that: described housing is made up of the left lateral star wheel frame (1) being fixed to one another together and right lateral star wheel frame (7), in this housing, be provided with sun wheels and two pairs of planetary gearsets；
Sun wheels are made up of coaxially arranged left sun gear (8) and right sun gear (6), left sun gear (8) is rotatably connected left lateral star wheel frame (1) through lining II (9), and right sun gear (6) is rotatably connected right lateral star wheel frame (7) through lining I (5)；
Two pairs of planetary gearsets are symmetrically arranged on the circumference centered by sun wheels axle center, every a pair planetary gearsets has two planetary gears (2), planetary gear (2) adopts straight spur gear, this planetary gear has gear shaft (21), gear shaft stage casing is shaped with gear ring I (22), this gear shaft one end is shaped with gear ring II (23), in every pair of planetary gearsets, the gear ring I of two planetary gears (2) engages each other, wherein the gear ring II of a planetary gear (2) engages with left sun gear (8), the gear ring II of another planetary gear (2) engages with right sun gear (6), described gear shaft (21) two ends are rotatably connected to a left side, right lateral star wheel frame (1, 7) on。
2. spur-gear differential according to claim 1, it is characterised in that: described left sun gear (8) one end is rotatably connected with one end of right sun gear (6)。
3. spur-gear differential according to claim 1 and 2, it is characterised in that: described gear shaft (21) completely fills needle bearing (4) with the employing that coordinates of left and right planetary wheel carrier (1,7)。
4. spur-gear differential according to claim 1, it is characterised in that: described gear shaft (21) upper ring gear I (22) is connected with gear ring II (23)。
5. spur-gear differential according to claim 1, it is characterised in that: the registration engaged between described planetary gear (2) with left and right sun gear (8,6), between planetary gear (2) and planetary gear (2) reaches more than 1.2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620060929.8U CN205331352U (en) | 2016-01-21 | 2016-01-21 | Spur gear differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620060929.8U CN205331352U (en) | 2016-01-21 | 2016-01-21 | Spur gear differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331352U true CN205331352U (en) | 2016-06-22 |
Family
ID=56318355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620060929.8U Active CN205331352U (en) | 2016-01-21 | 2016-01-21 | Spur gear differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205331352U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740020A (en) * | 2017-02-16 | 2017-05-31 | 重庆大学 | Electric motor car deceleration, differential integrated driving rear axle assy |
| CN106763636A (en) * | 2017-03-01 | 2017-05-31 | 周献生 | Differential mechanism |
| CN108302182A (en) * | 2017-01-12 | 2018-07-20 | 新奥特机械有限公司 | Differiential device for vehicle |
| CN112128339A (en) * | 2020-10-20 | 2020-12-25 | 白金砖 | Pneumatic control differential mechanism |
| CN112888879A (en) * | 2018-10-24 | 2021-06-01 | 德西福格成型技术有限公司 | Cylindrical gear differential mechanism |
| CN113700822A (en) * | 2021-09-29 | 2021-11-26 | 杭州恒业电机制造有限公司 | Super-silent differential mechanism |
| CN114263719A (en) * | 2021-11-19 | 2022-04-01 | 东风汽车零部件(集团)有限公司刃量具分公司 | Transfer case differential mechanism of straight-tooth planetary gear needle roller assembly |
-
2016
- 2016-01-21 CN CN201620060929.8U patent/CN205331352U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302182A (en) * | 2017-01-12 | 2018-07-20 | 新奥特机械有限公司 | Differiential device for vehicle |
| CN106740020A (en) * | 2017-02-16 | 2017-05-31 | 重庆大学 | Electric motor car deceleration, differential integrated driving rear axle assy |
| CN106763636A (en) * | 2017-03-01 | 2017-05-31 | 周献生 | Differential mechanism |
| CN112888879A (en) * | 2018-10-24 | 2021-06-01 | 德西福格成型技术有限公司 | Cylindrical gear differential mechanism |
| CN112888879B (en) * | 2018-10-24 | 2024-05-28 | 德西福格成型技术有限公司 | Cylindrical gear differential mechanism |
| CN112128339A (en) * | 2020-10-20 | 2020-12-25 | 白金砖 | Pneumatic control differential mechanism |
| CN113700822A (en) * | 2021-09-29 | 2021-11-26 | 杭州恒业电机制造有限公司 | Super-silent differential mechanism |
| CN114263719A (en) * | 2021-11-19 | 2022-04-01 | 东风汽车零部件(集团)有限公司刃量具分公司 | Transfer case differential mechanism of straight-tooth planetary gear needle roller assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205331352U (en) | Spur gear differential mechanism | |
| US10760662B2 (en) | Power-driven system and vehicle having the same | |
| CN103527719B (en) | Bearing-type RV speed reduction unit | |
| US9638304B2 (en) | Spur differential gear | |
| CN103029577A (en) | Coaxial direct-connection type drive axle assembly of electric automobile | |
| CN104477029B (en) | A kind of power drive system of two grades of electric automobiles | |
| CN103770936A (en) | Helical bevel gear planetary gear train for main reducing gear of helicopter | |
| CN203698660U (en) | Spiral bevel gear planetary gear train for helicopter main reducing gear | |
| CN207510502U (en) | A kind of endless-track vehicle double power flow power differential speed turning mechanism | |
| CN209818660U (en) | Planet wheel hub reduction gear | |
| CN208793532U (en) | A kind of planet gear type differential mechanism | |
| CN217683072U (en) | Planetary reducer, hub motor system with planetary reducer and electric vehicle | |
| CN114001125B (en) | Ultra-low speed ratio high-rigidity high-precision cycloidal pin gear planetary transmission speed reducer | |
| CN206606053U (en) | A kind of engineering machinery main tumbler of high speed high pulling torque | |
| CN214900524U (en) | Coaxial line type driving motor assembly | |
| CN205423737U (en) | Electric automobile rear axle speed reducer differential mechanism assembly | |
| CN202206246U (en) | Wheel hub motor for electric vehicle | |
| CN214661788U (en) | Base cycloidal speed reducer for industrial heavy-duty robot | |
| CN211820623U (en) | Integrated gearbox planetary differential device | |
| CN209925555U (en) | Double-flow gearbox | |
| CN113565941A (en) | High integrated structure of differential mechanism and motor | |
| KR101225105B1 (en) | Device for infinitely variable transmission and method thereof | |
| CN220168486U (en) | Inter-axle differential housing assembly with herringbone axle | |
| CN111536204B (en) | Internal-meshing planetary gear speed reducing mechanism | |
| WO2017131141A1 (en) | Transmission device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |