CN204512354U - The slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint - Google Patents
The slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint Download PDFInfo
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- CN204512354U CN204512354U CN201520177119.6U CN201520177119U CN204512354U CN 204512354 U CN204512354 U CN 204512354U CN 201520177119 U CN201520177119 U CN 201520177119U CN 204512354 U CN204512354 U CN 204512354U
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Abstract
The utility model proposes a kind of structure simple, cost is low, the slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint that intensity is high, it has differential casing, left non-conical differential gear, right non-conical differential gear and 4 non-conical planetary pinions, left non-conical differential gear is arranged in a left side half housing of differential casing, right non-conical differential gear is arranged in the right side half housing of differential casing, 4 non-conical planetary pinions are arranged in differential casing by cross axle, 4 non-conical planetary pinions engage with left non-conical differential gear and right non-conical differential gear, non-conical planetary pinion has 6 teeth, the number of teeth and the right non-conical differential gear of left non-conical differential gear have 8 teeth.
Description
Technical field
The utility model relates to a kind of limited-slip differential, particularly relates to a kind of slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint.
Background technique
Current, automobile becomes conventional means of transportation gradually, and self-driving travel more and more becomes the travel mode that people pursue, and the common car in area is difficult to travel in mountain area etc., and therefore go-anywhere vehicle becomes the first choice of some people.
Because offroad vehicle will through muddy, soft surface even cross-country locality traveling of being everlasting, 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, no matter such distribution can both meet 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 as follows.
(1) differential lock, when a wheel is in the less road surface of adhesion, differential lock can be handled differential carrier and semiaxis are locked together, differential mechanism is made 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.Sail the section that is difficult to walk in automobile running before, differential lock can be handled differential mechanism is pinned, after crossing the section that is difficult to walk, but, should in time differential lock be unclamped, to avoid the adverse consequences occurred because indifferential effect brings.
(2) 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.
(3) 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.
(4) gear ratio differential mechanism, differential bevel wheel is secondary according to variable ratio, then under the prerequisite not changing ransaxle general structure, the barrier effect of variable ratio transmission can be relied on 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.But in these gear ratio differential mechanisms, the intensity of gear is low, damage working life.
Model utility content
The purpose of this utility model is the slip-limiting differential mechanism with noncircular bevel gear proposing the Cardon universal joint that a kind of structure is simple, cost is low, intensity is high for the technological deficiency existed in prior art.
Following technological scheme is adopted for realizing the purpose of this utility model.
The slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint of technological scheme 1, there is differential casing, left non-conical differential gear, right non-conical differential gear and 4 non-conical planetary pinions, described left non-conical differential gear is arranged in a left side half housing of described differential casing, described right non-conical differential gear is arranged in the right side half housing of described differential casing, 4 described non-conical planetary pinions are arranged in differential casing by cross axle, 4 described non-conical planetary pinions engage with described left non-conical differential gear and described right non-conical differential gear, described non-conical planetary pinion has 6 teeth, the number of teeth and the described right non-conical differential gear of described left non-conical differential gear have 8 teeth.
The slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint of technological scheme 2, in the slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint of technological scheme 1, described left non-conical differential gear and the velocity ratio rule between described right non-conical differential gear and described non-conical planetary pinion according to
setting, wherein: i
34for described left non-conical differential gear and described right non-conical differential gear and the planetary velocity ratio of described non-conical, z
3, z
4be respectively described left non-conical differential gear and described right non-conical differential gear and the planetary number of teeth of described non-conical,
for the planetary corner of described non-conical, c is constant, and its scope is 0 ~ 0.5.
Compared with prior art, the utility model has following beneficial effect.
According to the slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint of technological scheme 1, there is left non-conical differential gear, right non-conical differential gear and 4 non-conical planetary pinions, by cross axle, non-conical planetary pinion is arranged in differential casing, and engage with differential gear, in addition, planetary for the non-conical number of teeth is set to 6, the number of teeth of the number of teeth of left non-conical differential gear and right non-conical differential gear is set to 8, by using non-conical gear, and planetary for the non-conical number of teeth is set to 6, the number of teeth of the number of teeth of left non-conical differential gear and right non-conical differential gear is set to 8, the locking coefficient of differential mechanism can be increased better, increase coupling mechanism force, improve the transmission to the tractive force of go-anywhere vehicle, more be easy to offroad vehicle muddy, soft surface even cross-country locality travels.And the compact structure formed like this, load diatibution is reasonable, under the prerequisite keeping larger locking coefficient, can significantly improve the performance of limited-slip differential.By structure special like this, can overcome that the root caused because the number of teeth is few is cut, topping, contact ratio be less than the defect such as 1.
According to the slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint of technological scheme 2, velocity ratio is set according to above-mentioned formula, can gear revolve turn around time, make velocity ratio change three cycles, ensure that the continuity of transmission.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of the slip-limiting differential mechanism with noncircular bevel gear representing Cardon universal joint of the present utility model.
Cross-sectional schematic when Fig. 2 is the non-conical gears meshing of the slip-limiting differential mechanism with noncircular bevel gear representing Cardon universal joint of the present utility model.
Embodiment
With reference to the accompanying drawings mode of execution of the present utility model is described in detail.
Fig. 1 is the decomposing schematic representation of the slip-limiting differential mechanism with noncircular bevel gear representing Cardon universal joint of the present utility model.Cross-sectional schematic when Fig. 2 is the non-conical gears meshing of the slip-limiting differential mechanism with noncircular bevel gear representing Cardon universal joint of the present utility model.
As shown in Figure 1 and Figure 2, the slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint of the present utility model has differential casing 10, left non-conical differential gear 20, right non-conical differential gear 30 and 4 non-conical planetary pinions 40.
Left non-conical differential gear 20 is arranged in a left side half housing 11 of differential casing 10, and right non-conical differential gear 30 is arranged in the right side half housing 12 of differential casing 10.4 non-conical planetary pinions 40 are arranged in differential casing 10 by cross axle 50.
4 non-conical planetary pinions 40 engage with left non-conical differential gear 20 and right non-conical differential gear 30, and non-conical planetary pinion 40 has 6 teeth, and the number of teeth and the right non-conical differential gear 30 of left non-conical differential gear 20 have 8 teeth.
According to the slip-limiting differential mechanism with noncircular bevel gear of above-mentioned Cardon universal joint, there is left non-conical differential gear, right non-conical differential gear and 4 non-conical planetary pinions, by cross axle, non-conical planetary pinion is arranged in differential casing, and engage with differential gear, in addition, planetary for the non-conical number of teeth is set to 6, the number of teeth of the number of teeth of left non-conical differential gear and right non-conical differential gear is set to 8, by using non-conical gear, and planetary for the non-conical number of teeth is set to 6, the number of teeth of the number of teeth of left non-conical differential gear and right non-conical differential gear is set to 8, the locking coefficient of differential mechanism can be increased better, increase coupling mechanism force, improve the transmission to the tractive force of go-anywhere vehicle, more be easy to offroad vehicle muddy, soft surface even cross-country locality travels.And the compact structure formed like this, load diatibution is reasonable, under the prerequisite keeping larger locking coefficient, can significantly improve the performance of limited-slip differential.By structure special like this, can overcome that the root caused because the number of teeth is few is cut, topping, contact ratio be less than the defect such as 1.
In addition, left non-conical differential gear and the velocity ratio rule between right non-conical differential gear and non-conical planetary pinion can be according to
setting, wherein: i
34for left non-conical differential gear and right non-conical differential gear and the planetary velocity ratio of non-conical, z
3, z
4be respectively left non-conical differential gear and right non-conical differential gear and the planetary number of teeth of non-conical,
for the planetary corner of non-conical, c is constant, and its scope is 0 ~ 0.5.According to above-mentioned formula, velocity ratio is set, can gear revolve turn around time, make velocity ratio change three cycles, ensure that the continuity of transmission.
In addition, each embodiment above-mentioned is only a kind of mode of execution, and each embodiment above-mentioned combination in any can form various may connection, and this combination is also contained in protection domain of the present utility model.
Above the slip-limiting differential mechanism with noncircular bevel gear of the Cardon universal joint of preferred implementation of the present utility model is illustrated, but, the utility model is not limited to above-mentioned concrete mode of execution, only otherwise depart from the scope of claim, can carry out various distortion or change.The utility model comprises various distortion within the scope of the claims and change.
Claims (2)
1. a slip-limiting differential mechanism with noncircular bevel gear for Cardon universal joint, is characterized in that,
There are differential casing, left non-conical differential gear, right non-conical differential gear and 4 non-conical planetary pinions,
Described left non-conical differential gear is arranged in a left side half housing of described differential casing, and described right non-conical differential gear is arranged in the right side half housing of described differential casing,
4 described non-conical planetary pinions are arranged in differential casing by cross axle,
4 described non-conical planetary pinions engage with described left non-conical differential gear and described right non-conical differential gear, and described non-conical planetary pinion has 6 teeth, and the number of teeth and the described right non-conical differential gear of described left non-conical differential gear have 8 teeth.
2. the slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint according to claim 1, is characterized in that, described left non-conical differential gear and the velocity ratio rule between described right non-conical differential gear and described non-conical planetary pinion are according to i
setting, wherein: i
34for described left non-conical differential gear and described right non-conical differential gear and the planetary velocity ratio of described non-conical, z
3, z
4be respectively described left non-conical differential gear and described right non-conical differential gear and the planetary number of teeth of described non-conical,
for the planetary corner of described non-conical, c is constant, and its scope is 0 ~ 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520177119.6U CN204512354U (en) | 2015-03-27 | 2015-03-27 | The slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint |
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| CN201520177119.6U CN204512354U (en) | 2015-03-27 | 2015-03-27 | The slip-limiting differential mechanism with noncircular bevel gear of Cardon universal joint |
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| CN204512354U true CN204512354U (en) | 2015-07-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105584960A (en) * | 2016-03-03 | 2016-05-18 | 浙江美科斯叉车有限公司 | Hydraulic four-wheel-drive cross-country forklift |
| CN106870684A (en) * | 2017-03-17 | 2017-06-20 | 山东湖西王集团有限公司 | automobile differential, bearing combined structure |
-
2015
- 2015-03-27 CN CN201520177119.6U patent/CN204512354U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105584960A (en) * | 2016-03-03 | 2016-05-18 | 浙江美科斯叉车有限公司 | Hydraulic four-wheel-drive cross-country forklift |
| CN106870684A (en) * | 2017-03-17 | 2017-06-20 | 山东湖西王集团有限公司 | automobile differential, bearing combined structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: No.1, dongjuzi, Hedong District, Tianjin, 300361 Patentee before: Military Transportation University of PLA |
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| CP03 | Change of name, title or address |