CN204175906U - A kind of slip-limiting differential mechanism with noncircular bevel gear - Google Patents
A kind of slip-limiting differential mechanism with noncircular bevel gear Download PDFInfo
- Publication number
- CN204175906U CN204175906U CN201420508347.2U CN201420508347U CN204175906U CN 204175906 U CN204175906 U CN 204175906U CN 201420508347 U CN201420508347 U CN 201420508347U CN 204175906 U CN204175906 U CN 204175906U
- Authority
- CN
- China
- Prior art keywords
- gear
- differential
- teeth
- differential mechanism
- 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.)
- Active
Links
Landscapes
- Retarders (AREA)
Abstract
The utility model discloses a kind of slip-limiting differential mechanism with noncircular bevel gear.The utility model slip-limiting differential mechanism with noncircular bevel gear is made up of differential carrier, two the non-conical planetary pinions arranged in it and two non-conical differential gears and axle, and planetary pinion is connected by footstalk (or a word axle) and housing and can rotates to it.Planetary pinion has 7 teeth, and differential gear has 14 teeth, and the form of gear tooth and the flank of tooth adopt special structural type, adopt non-involute profile of tooth, carry out analytical calculation according to Spherical engagement principle, under ensureing that contact ratio is greater than the prerequisite of 1, strengthen gear teeth transverse tooth thickness as far as possible, reduce tooth depth.In engagement process, its velocity ratio is according to the rule change of setting, and planetary pinion turns around, velocity ratio change one-period, change soft slow, amplitude large, owing to have employed particular design, the gear teeth have high strength, and differential mechanism locking coefficient reaches above, can significantly improve the cross-country passing ability of vehicle.
Description
Technical field
The utility model belongs to mechanical engineering field, is specifically related to a kind of vehicle slip-limiting differential mechanism with noncircular bevel gear.
Background technique
Offroad vehicle will through muddy, soft surface even cross-country locality traveling of being everlasting, and passing ability is one of its most important performance index.Differential mechanism is as the vitals of automobile, and its effect is distribution of torque between two output shafts, and ensures that two output shafts likely rotate with different angular velocity, and its form and performance are directly connected to the passing ability of car load.
At present, China's offroad vehicle ransaxle also generally adopts symmetrical cone gear differential mechanism, and its two-semiaxle gear size is identical, can distribute to left and right driving wheel by a rough average for torque.When automobile travels on good road, such distribution is all satisfied for straight-line travelling or turning driving.But when single wheel is in the very little smooth ground of coefficient of attachment, although there is good attachment on opposite side wheel and ground, also cannot plays potential tractive force, cause automobile to travel.
The approach solved the problem adopts anti-slip differential device, increases locking coefficient.Common method mainly contains:
Adopt differential lock: when a wheel is in the less road surface of adhesion, can handle differential lock differential carrier and semiaxis to be locked together, make differential mechanism not play differential action, now locking coefficient is ∞, left and right adhesion of taking turns can be made full use of like this, make the maximum value that tractive force reaches possible.Before sailing the section that is difficult to walk in automobile running into, differential lock can be handled differential mechanism is pinned, after crossing the section that is difficult to walk, should in time differential lock be unclamped, to avoid the adverse consequences occurred because indifferential effect brings.
Friction type differential: its principle utilizes the internal friction of mechanical component in differential mechanism to increase locking coefficient.This differential design is complicated, and requirement on machining accuracy is high, easy to wear.Owing to need do larger change to drive axle body structure, therefore generally cannot install on the vehicle of having shaped, its Applicable scope is restricted.
Free wheel type differential mechanism: free wheel type differential mechanism carries out work according to the speed discrepancy of left and right wheels, makes left and right semiaxis moment of torsion mutually without impact.When single wheel skids, it can automatically drive the semiaxis of wheel to separate with differential mechanism by turning soon, allows fast runner freely rotate, and all torsion torque is all passed to slow-speed driving wheel.Shortcoming is complex structure, wearing and tearing and impulse ratio more serious.
Gear ratio differential mechanism: differential bevel wheel is secondary according to variable ratio, then under the prerequisite not changing ransaxle general structure, can rely on the barrier effect of variable ratio transmission to increase its locking coefficient, improve the cross-country passing ability of vehicle.
The pattern occurred the earliest is velocity ratio period of change is a circular pitch (Liu Weixin, automotive axle design [M], Beijing: publishing house of Tsing-Hua University, 2004, Chinese patent ZL89100102.6, a kind of drive ratio-changing differential mechanism), namely, velocity ratio change realizes by a pair conjugate tooth profile, if gear has N number of tooth, then gear turns around, velocity ratio just changes N number of cycle, for keeping transmission continuity, namely require that contact ratio is greater than 1, the gear number of teeth just can not be very little, therefore, in transmission process, period of change is too many, frequency is too high, and it is too little to change amplitude.
Three circular pitch non-conical compensating gear (Chinese patents: ZL01131791.4 were there are afterwards, differential mechanism with variable transmission ratio and eliminating slip), that is, velocity ratio realizes by three pairs of conjugate tooth profiles, and the gear number of teeth adopts the multiple of 3, comparative maturity be designed to 3:4, (planetary pinion 9 teeth, differential gear 12 teeth), small gear turns around, velocity ratio changes 3 cycles, and the theoretical locking coefficient of differential mechanism can reach 1.857.
Above-mentioned two profiles formula all can be made up of 4 planetary pinions be arranged on cross axle and two differential gears.
Further, occur that again turning around with planetary pinion is new (the Chinese patent ZL201010249465.2 of a period of change, slip-limiting differential mechanism with noncircular bevel gear), planetary pinion 9 teeth, differential gear 18 teeth, profile of tooth adopts involute, and transmission process is steadily soft, drastically increase the locking coefficient of differential mechanism, theoretical value reaches 2.33.Owing to being subject to structural limitations, a set of differential mechanism can only be made up of two planetary pinions and two differential gears, and intensity will lower than above-mentioned two profiles formula.
Model utility content
Technical problem to be solved in the utility model is, overcomes the deficiencies in the prior art, provides a kind of high strength slip-limiting differential mechanism with noncircular bevel gear.
The utility model slip-limiting differential mechanism with noncircular bevel gear, be achieved by following technical proposals, be made up of differential carrier, non-conical planetary pinion, non-conical differential gear and corresponding axle, it is characterized in that, described non-conical planetary pinion 7 teeth, non-conical differential gear 14 teeth, its velocity ratio rule presses following formula
setting, wherein: i
32for differential gear and planetary velocity ratio, z
2, z
3be respectively the number of teeth of planetary pinion and differential gear,
for planetary corner, c=0 ~ 0.5 is constant.
The major axis place of described non-conical planetary pinion and non-conical differential gear is set to teeth groove, and minor axis place is set to the gear teeth.
The utility model under the prerequisite keeping differential mechanism locking coefficient (theoretical value 2.33, measured value reaches 3), can significantly improve the intensity of gear, thus improves bearing capacity and the reliability of differential mechanism.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the secondary plan view of non-Bevel Gear Drive;
Fig. 3 is the secondary rear view of non-Bevel Gear Drive.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
The utility model is made up of two non-conical planetary pinions and two non-conical differential gears, planetary pinion selects 7 teeth, 14 teeth selected by differential gear, planetary pinion turns around, velocity ratio change one-period, differential gear turns around, velocity ratio changes two cycles, profile of tooth no longer adopts involute, but carried out particular design according to requirement of strength, the similar eccentric wheel of planetary pinion, the similar elliptic wheel of differential gear, both are all set to teeth groove at major axis place, minor axis place is set to the gear teeth, in engagement process, velocity ratio is according to the rule change of setting, the form of gear tooth and the flank of tooth meet corresponding variable ratio conjugate condition.
Figure 1 shows that described differential design schematic diagram, in figure: differential carrier 1, planetary pinion 2, differential gear 3.
Fig. 2-3 is depicted as non-conical gear driving pair, planetary pinion 2, number of teeth z
2=7, differential gear 3, number of teeth z
3=14, velocity ratio rule:
c=0.4 coefficient,
-planetary pinion corner, because the number of teeth is few, to bring as adopted involute profile that root is cut, topping, contact ratio be less than the defect such as 1, therefore particular design has been carried out to profile of tooth, adopt non-involute profile of tooth, carry out analytical calculation according to Spherical engagement principle, under ensureing that contact ratio is greater than the prerequisite of 1, strengthen gear teeth transverse tooth thickness as far as possible, reduce tooth depth.The similar eccentric wheel of small gear, the similar elliptic wheel of gearwheel, the two major axis place is teeth groove, and minor axis place is the gear teeth.
Claims (2)
1. a slip-limiting differential mechanism with noncircular bevel gear, is made up of differential carrier, non-conical planetary pinion, non-conical differential gear and corresponding axle, it is characterized in that, described non-conical planetary pinion 7 teeth, and non-conical differential gear 14 teeth, its velocity ratio rule presses following formula
setting, wherein: i
32for differential gear and planetary velocity ratio, z
2, z
3be respectively the number of teeth of planetary pinion and differential gear,
for planetary corner, c=0 ~ 0.5 is constant.
2. according to slip-limiting differential mechanism with noncircular bevel gear according to claim 1, it is characterized in that, the major axis place of described non-conical planetary pinion and non-conical differential gear is set to teeth groove, and minor axis place is set to the gear teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508347.2U CN204175906U (en) | 2014-09-04 | 2014-09-04 | A kind of slip-limiting differential mechanism with noncircular bevel gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508347.2U CN204175906U (en) | 2014-09-04 | 2014-09-04 | A kind of slip-limiting differential mechanism with noncircular bevel gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175906U true CN204175906U (en) | 2015-02-25 |
Family
ID=52564717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508347.2U Active CN204175906U (en) | 2014-09-04 | 2014-09-04 | A kind of slip-limiting differential mechanism with noncircular bevel gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175906U (en) |
-
2014
- 2014-09-04 CN CN201420508347.2U patent/CN204175906U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204140788U (en) | Low-speed electronic automobile variable speed box assembly | |
| CN105257802A (en) | Internal gear driven type pure rolling automobile differential mechanism with random tooth difference | |
| CN203989854U (en) | Return power car actuating unit and automatic entrance-exit and return power car | |
| CN204512354U (en) | The slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint | |
| CN101886695A (en) | Slip-limiting differential mechanism with noncircular bevel gear | |
| CN205423738U (en) | Tooth -like automotive differential of internal gear driven pendulum | |
| CN203670672U (en) | Differential mechanism | |
| CN204175906U (en) | A kind of slip-limiting differential mechanism with noncircular bevel gear | |
| CN201787026U (en) | Noncircular bevel gear limited slip differential | |
| CN204572948U (en) | The PTO Power output engaging sleeve gear shifting structure of wheeled tractor | |
| CN201475278U (en) | Non-circular bevel gear limited slip differential | |
| CN104728387A (en) | Three-fork-shaft-type noncircular bevel gear limited slip differential | |
| CN203230809U (en) | Improved differential mechanism | |
| CN202500977U (en) | Mechanical differential lock for vehicle | |
| CN208814608U (en) | Bridge drives electric drive hydraulic thruster steering-type aerial work platform | |
| CN2628810Y (en) | Adaptive gear ratio antisliding differential mechanism | |
| CN206268402U (en) | A kind of limited-slip differential | |
| CN206141753U (en) | Variable speed differential mechanism | |
| CN203395118U (en) | Large-tonnage automobile crane transfer case | |
| CN1324251C (en) | Anti-skid differential with adaptive speed ratio | |
| CN201420841Y (en) | Limited slip differential for non-circular planetary gear with variable gear ratio | |
| CN206368953U (en) | The real-time limited-slip differential of double rotational directions screw rod and the vehicle with the differential mechanism | |
| CN203822998U (en) | Simple mechanical differential lock | |
| CN207261604U (en) | A kind of differential gearshift assembly | |
| CN206943367U (en) | A kind of differential lock construction of four-wheel motor vehicle bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 300161 No.1, dongjuzi, Chenglin Road, Hedong District, Tianjin Patentee after: ARMY MILITARY TRANSPORTATION University Address before: 300161 Tianjin City Hedong District No. 1 East Station Patentee before: Military Transportation University of PLA |