CN202545734U - Differential strength differential - Google Patents
Differential strength differential Download PDFInfo
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- CN202545734U CN202545734U CN 201120520785 CN201120520785U CN202545734U CN 202545734 U CN202545734 U CN 202545734U CN 201120520785 CN201120520785 CN 201120520785 CN 201120520785 U CN201120520785 U CN 201120520785U CN 202545734 U CN202545734 U CN 202545734U
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- differential
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- driveshaft
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Abstract
The utility model provides a differential strength differential. The differential comprises a differential part, a left differential strength part and a right differential strength part, wherein the differential part is mainly similar to the existing common bevel gear differential; the left differential strength part comprises an input dual gear, an output dual gear, a rotating frame, an output sun gear, an input sun gear, a bearing block with a hole, a support bearing and an output shaft; the rotating frame is a square frame; the upper and lower edges of the square frame are respectively and simultaneously provided with the input dual gear and the output dual gear; the right middle part of the square frame is fixed on a hollow half shaft; the left middle part of the square frame is fixed in the middle of the output shaft; the left outer end of the output shaft penetrates through the support bearing; the right end of the output shaft is provided with the output sun gear; the input sun gear is fixed at the left end of a left rotating bar; the input dual gear is meshed with the input sun gear; and the output dual gear is meshed with the output sun gear.
Description
Technical field
The utility model relates to a kind of actuating unit that is used for automobile, particularly a kind of differential strength differential device that is used for automobile.
Background technique
Automobile owing to reasons such as turning and road unevenness will produce the inconsistent situation of two wheel speeds, if adopt positive drive, will cause tire heavy wear, damage parts and turn to difficulty under steam.Differential mechanism is a kind of power transmission system that allows to have between vehicle two driving wheels different rotating speeds.The differential mechanism that uses at present is generally common bevel differential.
Common bevel differential is the most basic, that application is maximum a kind of differential mechanism, and its advantage is simple in structure, and the differential performance is good.But this differential mechanism has the shortcoming of mean allocation driving moment, when the adhesion of one side tire descends; Adhesion will occur and this taken turns skid, at this moment, the moment of differential mechanism transmission is the twice of slip wheel institute carry-over moment; This moment obviously can't powered vehicle be advanced; That is to say that this differential mechanism influences the passing ability of vehicle, this is its fatal shortcoming.In order to overcome this defective, people have designed slider cam formula differential mechanism, friction chip differential mechanism, worm-gear differential and locking differential, but not very successful.
Though slider cam formula differential mechanism, friction chip differential mechanism and worm-gear differential structure are different, all are the inner friction torques that has increased differential mechanism, that has carried automobile to a certain extent can cross performance; Their common wrong point is to make difficulty, and transmission efficiency is low, because increase the adhesion utilization factor by increasing inner friction torque; Improve the performance of passing through of automobile; Inner friction torque is big more, and steering resisting torque is also just big more, and differential is also more difficult.
Locking differential is on the basis of common bevel differential, to increase a differential lock; When wheel-slip; Differential casing and wheel axle are tightly locked together and become rigidity with differential lock and drive, the advantage of this differential mechanism is to have improved the performance of passing through of automobile, but power system and control system because of having increased differential lock; Cost increases, and reliability reduces greatly.Unclamp differential lock if the driver forgets, then can produce damage parts and handle serious consequences such as out of control.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of existing technology and the twice of a kind of moment of transmission much larger than slip wheel moment is provided; This moment can powered vehicle be advanced; Can improve the passing ability of vehicle; And operation continuously steadily can be fit to the differential strength differential device of various road surfaces situation and suitable various running condition.
The technological scheme of the utility model is: a kind of differential strength differential device, it comprises differential part, the differential powerful part in a left side and right differential powerful part.
Described differential is partly main similar with existing common bevel differential; It comprises: drive bevel gear, by dynamic bevel gear, bevel planet gear, differential gear, cross axle, go up driveshaft, down driveshaft, left-handed bull stick, dextrorotation bull stick, hollow half axle, differentiator shell, outer containment vessel, differentiator columella hold, driving shaft; Drive bevel gear is through the end of screw at driving shaft; There are last driveshaft, following driveshaft, left-handed bull stick, right rotation bar to form cross shape on the cross axle; Bevel planet gear is equipped with in the middle part activity of last driveshaft, following driveshaft, and fixedly be equipped with by dynamic bevel gear the outer end of last driveshaft, following driveshaft, is fixed together by dynamic bevel gear and differentiator shell; The differentiator shell holds through the differentiator columella and is connected on the dextrorotation bull stick; Differential gear is fixed on an end of hollow half axle, and hollow half axle is movably connected on the left-handed bull stick through bearing, and differential gear is meshed with bevel planet gear; Drive bevel gear be meshed by dynamic bevel gear, outer containment vessel is wrapped in outer surface.
The differential powerful part in a described left side comprises input duplicate gear, output duplicate gear, swivel mount, output center gear, input central gear, bearing support with holes, spring bearing, output shaft; Swivel mount is the hollow framework; Two limits up and down of hollow framework swivel mount are equipped with input duplicate gear and output duplicate gear respectively simultaneously, and the middle part, the right of hollow framework swivel mount is fixed on the hollow half axle, and the middle part, the left side of hollow framework swivel mount is fixed on the middle part of output shaft; Spring bearing is passed in the left outer end of output shaft; Output center gear is equipped with in the right part of output shaft, and the input central gear is fixed on the left end of left-handed bull stick, and the input duplicate gear is meshed with the input central gear; The output duplicate gear is meshed with output center gear, and spring bearing is fixed on the internal surface of outer containment vessel.
The differential powerful part-structure in the described right side is identical with the differential powerful part in a left side, is installed in the right of differential strength differential device.
The utility model compared with prior art has following characteristics: if single wheel adhesion descends; Do not influence stressed on the swivel mount; As long as acting on the vehicle two-wheeled maximum adhesion power sum just can advance by towing vehicle greater than running resistance; Improved the passing ability of vehicle, and operation continuously steadily, can be fit to various road surfaces situation and be fit to various running condition.
Further describe below in conjunction with accompanying drawing and embodiment detailed structure the utility model.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is the utility model transmission of power schematic representation.
Embodiment
Shown in accompanying drawing: a kind of differential strength differential device, it comprises differential part, the differential powerful part in a left side and right differential powerful part.
Described differential is partly main similar with existing common bevel differential; It comprises: drive bevel gear 1, by dynamic bevel gear 2, bevel planet gear 3, differential gear 4, cross axle 11, go up driveshaft 11-1, down driveshaft 11-4, left-handed bull stick 11-2, dextrorotation bull stick 11-3, hollow half axle 12, differentiator shell 13, outer containment vessel 15, differentiator columella hold 18, driving shaft 16; Drive bevel gear 1 is through the end of screw at driving shaft 16; There are last driveshaft 11-1, following driveshaft 11-4, left-handed bull stick 11-2, dextrorotation bull stick 11-3 to form cross shape on the cross axle 11; Bevel planet gear 3 is equipped with in the middle part activity of last driveshaft 11-1, following driveshaft 11-4, and fixedly be equipped with by dynamic bevel gear 2 outer end of last driveshaft 11-1, following driveshaft 11-4, is fixed together by dynamic bevel gear 2 and differentiator shell 13; Differentiator shell 13 holds 18 through the differentiator columella and is connected on the dextrorotation bull stick 11-3; Differential gear 4 is fixed on an end of hollow half axle 12, and hollow half axle 12 is movably connected on the left-handed bull stick 11-2 through bearing, and differential gear 4 is meshed with bevel planet gear 3; Drive bevel gear 1 be meshed by dynamic bevel gear 2, outer containment vessel 15 is wrapped in outer surface.
The differential powerful part in a described left side comprises input duplicate gear 5, output duplicate gear 6, swivel mount 7, output center gear 9, input central gear 10, bearing support with holes 13, spring bearing 17, output shaft 19; Swivel mount 7 is the hollow framework; Two limits up and down of hollow framework swivel mount 7 are equipped with input duplicate gear 5 and output duplicate gear 6 respectively simultaneously; The middle part, the right of hollow framework swivel mount 7 is fixed on the hollow half axle 12; The middle part, the left side of hollow framework swivel mount 7 is fixed on the middle part of output shaft 19, and spring bearing 17 is passed in the left outer end of output shaft 19, and output center gear 9 is equipped with in the right part of output shaft 19; Input central gear 10 is fixed on the left end of left-handed bull stick 11-2; Input duplicate gear 5 is meshed with input central gear 10, and output duplicate gear 6 is meshed with output center gear 9, and spring bearing 17 is fixed on the internal surface of outer containment vessel 15.
The differential powerful part-structure in the described right side is identical with the differential powerful part in a left side, is installed in the right of differential strength differential device.
The working principle and the method for using of the utility model are: shown in accompanying drawing 2: drive bevel gear 1, driving force is passed to by dynamic bevel gear 2, when being rotated by dynamic bevel gear 2; Rotate through bevel planet gear 3 engagement driving differential gears 4 on the one hand; Differential gear 4 drives hollow half axle 12 and rotates, and hollow half axle 12 driven rotary framves 7 rotate, and drive left-handed bull stick 11-2 through cross axle 11 on the other hand and rotate; Left-handed bull stick 11-2 drives input central gear 10 and rotates; Central gear 10 drives input duplicate gear 5 and rotates with output duplicate gear 6, and output duplicate gear 6 drives output center wheel (9) and rotates, and swivel mount 7 rotates with the output center wheel 9 common output shafts 19 that drive; Wheel 8 is fixed on the output shaft 19, thus powered vehicle.
If the loading moment that acts on the output center wheel 9 is M
9,Then act on the moment M on the input central gear 10
10With the moment M that acts on the swivel mount 7
7Be respectively:
M
10＝-?M
9/i
7 10.9×η
10.9 ----(1)
M
7＝M
9(1/?i
7 10.9×η
10.9-1) ----(2)
I in the formula
7 10.9The velocity ratio from input central gear 10 to output center wheel 9 fixedly time the for swivel mount 7, η
10.9The meshing efficiency from input central gear 10 to output center wheel 9 fixedly time the for swivel mount, η
10.9=η
10.5* η
6.9
Can find out from formula (1) and (2): when output center is taken turns 9 adhesion M
9During decline, M
10And M
7All descend M in proportion simultaneously
7Decline mean M
4Decline because bevel gear tooth system has mean allocation moment, M
4Also descend thereupon; The driving moment that is two-wheeled is taken turns the decline of 9 adhesion and decline simultaneously with output center, and when the adhesion of output center wheel 9 dropped to less than running resistance, this was taken turns and skids; Total driving force is the twice of slip wheel frictional force, and this is equivalent to the situation of common bevel differential.
If get i
7 10.9* η
10.9=1, (for example adopt the gear transmission of 7 class precisions, meshing efficiency η
10.9=η
10.5* η
6.9=0.98 * 0.98=0.96 gets velocity ratio i
7 10.9=100/96, i is just arranged
7 10.9* η
10.9=1), M is arranged then
10=-M
9, M
7=0, at this moment, the needed moment of wheel is all born by input central gear 10, and 7 transmitting movements of swivel mount.
If single wheel adhesion descends, like M
9Descend required driving torque M
10Descend, do not influence stressed on the swivel mount (7), no matter therefore M
9And M
10How to change M
7Be always zero, the characteristics of common bevel differential mean allocation moment of torsion are here overcome.
Just can advance by towing vehicle the principle of Here it is differential strength differential device greater than running resistance as long as act on the vehicle two-wheeled maximum adhesion power sum.
When turning or travelling on uneven road surface, driving force forces one to take turns fast commentaries on classics, and another takes turns slow-speed, and external force overcomes the internal friction power of bevel gear tooth system, and two output center wheels 9 produce speed difference about making, and this differential principle with common bevel differential is identical.
In the actual design, only require i
7 10.9* η
10.9≈ 1 gets final product, but must make M
7Absolute value less than the inner friction torque of bevel gear tooth system because in the inner friction torque scope,, still can keep inner friction torque M on second half shaftgear 4 when the moment on the side differential gear 4 is reduced to when being zero
rSo, M
rCan make that suffered moment maintains normal value on this side input central gear 10 and the output center wheel 9, and not cause driving moment to reduce, thereby make full use of two-wheeled adhesion sum powered vehicle.
Claims (1)
1. a differential strength differential device comprises differential partly, it is characterized in that: further comprising differential powerful part in a left side and right differential powerful part;
Differential is partly main similar with existing common bevel differential; It comprises: drive bevel gear, by dynamic bevel gear, bevel planet gear, differential gear, cross axle, go up driveshaft, down driveshaft, left-handed bull stick, dextrorotation bull stick, hollow half axle, differentiator shell, differentiator columella hold, driving shaft; Drive bevel gear is through the end of screw at driving shaft; Have last driveshaft, following driveshaft, left-handed bull stick, right rotation bar to form cross shape on the cross axle, bevel planet gear is equipped with in the middle part activity of last driveshaft, following driveshaft, and fixedly be equipped with by dynamic bevel gear the outer end of last driveshaft, following driveshaft; Be fixed together by dynamic bevel gear and differentiator shell; The differentiator shell holds through the differentiator columella and is connected on the dextrorotation bull stick, and differential gear is fixed on an end of hollow half axle, and hollow half axle is movably connected on the left-handed bull stick through bearing; Differential gear is meshed with bevel planet gear, drive bevel gear be meshed by dynamic bevel gear;
The differential powerful part in a left side comprises input duplicate gear, output duplicate gear, swivel mount, output center gear, input central gear, bearing support with holes, spring bearing, output shaft; Swivel mount is the hollow framework; Two limits up and down of hollow framework swivel mount are equipped with input duplicate gear and output duplicate gear respectively simultaneously, and the middle part, the right of hollow framework swivel mount is fixed on the hollow half axle, and the middle part, the left side of hollow framework swivel mount is fixed on the middle part of output shaft; Spring bearing is passed in the left outer end of output shaft; Output center gear is equipped with in the right part of output shaft, and the input central gear is fixed on the left end of left-handed bull stick, and the input duplicate gear is meshed with the input central gear; The output duplicate gear is meshed with output center gear, and spring bearing is fixed on the internal surface of outer containment vessel;
Right differential powerful part-structure is identical with the differential powerful part in a left side, is installed in the right of differential strength differential device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120520785 CN202545734U (en) | 2011-12-14 | 2011-12-14 | Differential strength differential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120520785 CN202545734U (en) | 2011-12-14 | 2011-12-14 | Differential strength differential |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545734U true CN202545734U (en) | 2012-11-21 |
Family
ID=47166373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120520785 Expired - Fee Related CN202545734U (en) | 2011-12-14 | 2011-12-14 | Differential strength differential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545734U (en) |
-
2011
- 2011-12-14 CN CN 201120520785 patent/CN202545734U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20141214 |
|
| EXPY | Termination of patent right or utility model |