CN105257801A - Pure rolling type automobile differential mechanism - Google Patents
Pure rolling type automobile differential mechanism Download PDFInfo
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- CN105257801A CN105257801A CN201510738437.XA CN201510738437A CN105257801A CN 105257801 A CN105257801 A CN 105257801A CN 201510738437 A CN201510738437 A CN 201510738437A CN 105257801 A CN105257801 A CN 105257801A
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- left half
- roller
- half axle
- cam ring
- central gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/12—Differential gearings without gears having orbital motion
- F16H48/14—Differential gearings without gears having orbital motion with cams
- F16H48/147—Differential gearings without gears having orbital motion with cams with driven cam followers or balls engaging two opposite cams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Retarders (AREA)
Abstract
The invention belongs to the technical field of mechanical transmission and provides a novel pure rolling type automobile differential mechanism. A straight tooth bevel gear is arranged outside an outer tooth inner cam, and a biphase inner cam is arranged in the outer tooth inner cam. Power is input through the bevel gear outside the outer tooth inner cam and transmitted to a movable type sleeve roller through the biphase inner cam of the outer tooth inner cam, and then the movable type sleeve roller transmits the power to a left half axle frame fixedly connected with a left wheel and a right half axle center wheel fixedly connected with a right wheel, so that a differential speed between the left wheel and the right wheel is achieved. According to the pure rolling type automobile differential mechanism, a planetary gear system in a traditional automobile differential mechanism is omitted, and the movable type sleeve roller is connected with the left half axle frame, the outer tooth inner cam and the right half axle center wheel in a rolling contact mode, so that the structure is more compact, the size is small, and the weight is light; multiple teeth are engaged, the contact ratio is large, the bearing capability is high, and transmission efficiency is high; the pure rolling type automobile differential mechanism can be widely applied to various wheeled vehicles needing differential mechanisms, for example, common automobiles and engineering vehicles.
Description
Technical field
The present invention relates to a kind of pure rolling formula automobile differential, for the differential of wheeled vehicle, belong to technical field of mechanical transmission.
Background technique
Automobile differential conventional at present all adopts the epicyclic gear system be made up of multiple spur bevel gear to realize the object of differential, although this system can realize the function of automobile left and right half differential, but this component of a system is more, axis and radial dimension are all large, volume is large, heavier-weight, particularly for heavy-duty car, in order to can realize differential and transmit enough power, then volume and weight can increase further; It is low that spur bevel gear transmission also has contact ratio, therefore bearing capacity is low, and transmission efficiency is not high, spur bevel gear processing difficulties, the shortcomings such as manufacturability is poor.
Summary of the invention
The object of the invention is: for overcoming the above-mentioned shortcoming that existing automobile differential exists, the invention provides a kind of simple and compact for structure, axis and radial dimension is little, lightweight, contact ratio is high, bearing capacity is large, transmission efficiency is high Novel differential gear---pure rolling formula automobile differential.
The technological scheme that the present invention takes for its technical problem of solution is: a kind of pure rolling formula automobile differential, primarily of external tooth cam ring (1), left half axle frame (2), tapered roller bearing (3), right half shell (4), portable sleeve roller (5), right axle shaft central gear (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), deep groove ball bearing (17), the compositions such as sleeve pad (18), it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " external tooth cam ring---roller---central gear " system, this system mainly comprises external tooth cam ring (1), left half axle frame (2), portable sleeve roller (5), right axle shaft central gear (6), differential is realized with this system, the outside of external tooth cam ring (1) is spur bevel gear, inside is two-phase cam ring i.e. oval interior Double-phase shock wave face, therefore external tooth cam ring (1) is a bevel gear of main reducing gear, it is again the interior Double-phase shock wave device in differential mechanism, main reducing gear and differential mechanism are organically integrated by external tooth cam ring (1), and external tooth cam ring (1) and right half shell (4) are fixedly connected into an entirety by screw (8) and are supported in frame by a pair tapered roller bearing (3), the left end of left half axle frame (2) is left half axle, left end and the left side wheel (19) of left half axle frame (2) are connected mutually, right-hand member is loaded in the interior double phase cam of external tooth cam ring (1), the right-hand member of left half axle frame (2) is tube-in-tube structure, has Z along this sleeve circumference
2individual radial guide groove, this guide groove is built with portable sleeve roller (5), and left half axle frame (2) is supported in external tooth cam ring (1) by a pair deep groove ball bearing (17), right axle shaft central gear (6) is the external cam with multiple concave portion, and number and the wave number of its projection are designated as Z
6right axle shaft central gear (6) is embedded in the right-hand member tube-in-tube structure of left half axle frame (2), the right-hand member of right axle shaft central gear (6) is right axle shaft, right-hand member and the right wheel (20) of right axle shaft central gear (6) are fixed together, and the left end of right axle shaft central gear (6) is supported within left half axle frame (2) by deep groove ball bearing (9), right-hand member is supported within right half shell (4) by deep groove ball bearing (7), portable sleeve roller (5) is made up of end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), the large end of end block (12) and bearing pin (16) is rectangular structure, needle roller sleeve (14) is limited on bearing pin (16) by the large end of end block (12) and bearing pin (16), and forms revolute pair with bearing pin (16) by needle roller (15), the radial guide groove inwall of the right-hand member tube-in-tube structure of left half axle frame (2) radially has the groove filling needle roller (10), at this groove built with some needle rollers (10), portable sleeve roller (5) is contained in the radial guide groove of the right-hand member sleeve of left half axle frame (2), the large end of its end block (12) and bearing pin (16) can form rolling annexation to moving and passing through the some needle rollers (10) in guide groove with the radial guide groove of left half axle frame (2) in the radial guide groove central diameter of left half axle frame (2), change sliding friction is rolling friction, the external cam profile of the outer cylinder surface of needle roller sleeve (14) of portable sleeve roller (5) and the interior double phase cam profile of external tooth cam ring (1) and right axle shaft central gear (6) is meshed each composition rolling higher pair respectively.The wave number Z of right axle shaft central gear (6)
6with the number Z of portable sleeve roller (5)
2difference be 2.
Other NM places of differential mechanism of the present invention, as left half axle frame (2), connecting etc. of right axle shaft central gear (6) and wheel of vehicle all adopt prior art.
Compared with the prior art primary object of the present invention is:
1. the present invention replaces the epicyclic gear system of orthodox car differential mechanism by " external tooth cam ring---roller---central gear " system, this system mainly comprises external tooth cam ring, left half axle frame, portable sleeve roller, right axle shaft central gear, realizes differential with this system.
2. the outside of external tooth cam ring be spur bevel gear, inside be two-phase cam ring namely oval in Double-phase shock wave face, therefore external tooth cam ring is a bevel gear of main reducing gear, be again the interior Double-phase shock wave device in differential mechanism, main reducing gear and differential mechanism are organically integrated by external tooth cam ring; The left end of left half axle frame is left half axle, left end and the left side wheel of left half axle frame are connected mutually, right-hand member is loaded in the interior double phase cam of external tooth cam ring, left half axle frame is supported in external tooth cam ring by a pair deep groove ball bearing, and the right-hand member of left half axle frame is tube-in-tube structure, has Z along this sleeve circumference
2individual radial guide groove, this guide groove is built with portable sleeve roller; Right axle shaft and central gear are designed to one, be called right axle shaft central gear, the right-hand member of right axle shaft central gear is right axle shaft, right-hand member and the right wheel of right axle shaft central gear are fixed together, take turns centered by the left end of right axle shaft central gear, right axle shaft central gear is the external cam with multiple concave portion, right axle shaft central gear is embedded in the right-hand member tube-in-tube structure of left half axle frame, the left end of right axle shaft central gear is supported within left half axle frame by deep groove ball bearing, and right-hand member is supported within right half shell by deep groove ball bearing.
3. portable sleeve roller is made up of end block, pin, needle roller sleeve, needle roller, bearing pin, and the large end of end block and bearing pin is rectangular structure, and needle roller sleeve is limited on bearing pin by the large end of end block and bearing pin, and forms revolute pair with bearing pin by needle roller; The radial guide groove inwall of the right-hand member tube-in-tube structure of left half axle frame radially has the groove filling needle roller, at this groove built with some needle rollers; Portable sleeve roller is contained in the radial guide groove of the right-hand member sleeve of left half axle frame, the large end of its end block and bearing pin can in the radial guide groove central diameter of left half axle frame to move and the radial guide groove of the some needle rollers passed through in guide groove and left half axle frame forms rolling annexation, and change sliding friction is rolling friction; The external cam profile of the outer cylinder surface of needle roller sleeve of portable sleeve roller and the interior double phase cam profile of external tooth cam ring and right axle shaft central gear is meshed each composition rolling higher pair respectively.
4. left half axle frame and right axle shaft central gear is passed to through portable sleeve roller after driving force passes to external tooth cam ring, thus pass to left and right wheel, and portable sleeve roller be rolling friction between external tooth cam ring, left half axle frame and right axle shaft central gear and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
5. portable sleeve roller is multiple tooth engagement with between external tooth cam ring, left half axle frame and right axle shaft central gear, therefore contact ratio is large, and bearing capacity is large, can realize high-power, high pulling torque differential drive.
6. the tooth number Z of right axle shaft central gear
6with the number Z of portable sleeve roller
2difference is 2, there is not eccentric installation, therefore the stressed autobalance of differential mechanism.
1. the present invention is compared with existing conventional automobile differential, has following useful technique effect:
Compact structure, axially and radial dimension little, volume is little, and weight is lighter
The present invention adopts " external tooth cam ring---roller---central gear " transmission system to replace the epicyclic gear system of conventional carrier, and the axis of transmission device and radial dimension are all less, and thus the compact structure of differential mechanism of the present invention, volume are less, alleviate weight.
2. contact ratio is large, and bearing capacity is high
In the present invention, portable sleeve roller realizes multipair tooth with the external cam profile of right axle shaft central gear and the Internal periphery of external tooth cam ring simultaneously and engages, the portable sleeve roller of 50% can be had at most to participate in joggleword simultaneously, contact ratio is high, bearing capacity is high, can realize high-power, high pulling torque differential drive.
3. transmission efficiency is high
Portable sleeve roller and external tooth cam ring, with right axle shaft central gear, and left half axle frame form three engagement pair and be pure rolling mesh, namely in differential mechanism of the present invention, the relative movement of all contacting points is pure rolling, therefore differential drive efficiency of the present invention is high.
4. good manufacturability, cost of production are low
Part in differential mechanism of the present invention mostly is circular, simple shape, easilier than the bevel gear in epicyclic gear system processes, and good manufacturability, cost of production is low.
5. with automatic retarding effect when realizing differential function
Differential mechanism of the present invention can produce certain retarding braking effect automatically when automobile enters bend, and degree of deceleration increases with the reduction of radius of turn, vehicle is travelled safer.
6. stress equalization, smooth running
The tooth number Z of right axle shaft central gear
6with the number Z of portable sleeve roller
2difference be 2, there is not eccentric installation, therefore the stressed autobalance of differential mechanism, smooth running.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.But want it is emphasized that; the specific embodiment of the present invention is not limited to the form below described by embodiment; those skilled in the art is not when paying creative work; also can design other embodiment easily; therefore the embodiment of embodiment given below should be interpreted as protection scope of the present invention, protection scope of the present invention is limited in given embodiment.
Fig. 1 is pure rolling formula automobile differential structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is external tooth cam ring structural representation;
Fig. 4 is the structural representation of left half axle frame;
Fig. 5 is the structural representation of portable sleeve roller;
Fig. 6 is the structural representation of right axle shaft central gear;
Fig. 7 is the differential gearing schematic diagram of pure rolling formula automobile differential;
The relative position relation schematic diagram of each wheel and differential mechanism when Fig. 8 is automobile left-hand bend
The identification of object that above-mentioned each attached picture in picture knows label is: 1 external tooth cam ring; 2 left half axle framves; 3 tapered roller bearings; 4 right half shells; 5 portable sleeve rollers; 6 right axle shaft central gears; 7 deep groove ball bearings; 8 screws; 9 deep groove ball bearings; 10 needle rollers; 11 spur bevel gears; 12 end blocks; 13 pins; 14 needle roller sleeves; 15 needle rollers; 16 bearing pins; 17 deep groove ball bearings; 18 sleeve pads; 19 left side wheels; Wheel on the right of in the of 20.
Specific embodiment
The formula of pure rolling shown in Fig. 1 to Fig. 6 automobile differential, primarily of the composition such as external tooth cam ring (1), left half axle frame (2), tapered roller bearing (3), right half shell (4), portable sleeve roller (5), right axle shaft central gear (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), deep groove ball bearing (17), sleeve pad (18).Abandon the epicyclic gear system of orthodox car differential mechanism, replace " external tooth cam ring---roller---central gear " system, this system mainly comprises external tooth cam ring (1), left half axle frame (2), portable sleeve roller (5), right axle shaft central gear (6), realizes differential with this system.The outside of external tooth cam ring (1) is spur bevel gear, inside is two-phase cam ring i.e. oval interior Double-phase shock wave face, therefore external tooth cam ring (1) is the driven wheel of differential of main reducing gear, be again the interior Double-phase shock wave device in differential mechanism, external tooth cam ring (1) and right half shell (4) are fixedly connected into an entirety by screw (8) and are supported in frame by a pair tapered roller bearing (3).The left end of left half axle frame (2) is left half axle, left end and the left side wheel (19) of left half axle frame (2) are connected mutually, right-hand member is loaded in the interior double phase cam of external tooth cam ring (1), the right-hand member of left half axle frame (2) is tube-in-tube structure, has Z along this sleeve circumference
2individual radial guide groove, this guide groove is built with portable sleeve roller (5), and left half axle frame (2) is supported in external tooth cam ring (1) by a pair deep groove ball bearing (17).
Right axle shaft central gear (6) is the external cam with multiple concave portion, and number and the wave number of its projection are designated as Z
6right axle shaft central gear (6) is embedded in the right-hand member tube-in-tube structure of left half axle frame (2), the right-hand member of right axle shaft central gear (6) is right axle shaft, right-hand member and the right wheel (20) of right axle shaft central gear (6) are fixed together, and the left end of right axle shaft central gear (6) is supported within left half axle frame (2) by deep groove ball bearing (9), right-hand member is supported within right half shell (4) by deep groove ball bearing (7).Portable sleeve roller (5) is made up of end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), the large end of end block (12) and bearing pin (16) is rectangular structure, the effect of pin (13) makes end block (12) and bearing pin (16) can not relative movement in axis, needle roller sleeve (14) is limited on bearing pin (16) by the large end of end block (12) and bearing pin (16), and forms revolute pair with bearing pin (16) by needle roller (15).The radial guide groove inwall of the right-hand member tube-in-tube structure of left half axle frame (2) radially has the groove filling needle roller (10), at this groove built with some needle rollers (10), portable sleeve roller (5) is contained in the radial guide groove of the right-hand member sleeve of left half axle frame (2), the large end of its end block (12) and bearing pin (16) can form rolling annexation to moving and passing through the some needle rollers (10) in guide groove with the radial guide groove of left half axle frame (2) in the radial guide groove central diameter of left half axle frame (2), change sliding friction is rolling friction, that is, between the portable sleeve roller (5) in the guide groove inwall and left half axle frame (2) guide groove of left half axle frame (2), some needle rollers (10) are housed, needle roller (10) makes the contact between portable sleeve roller (5) and left half axle frame (2) guide groove become rolling friction from sliding friction, portable sleeve roller (5) radially freely can be rolled in left half axle frame (2) guide groove move ahead, retreat, the external cam profile of the outer cylinder surface of needle roller sleeve (14) of portable sleeve roller (5) and the interior double phase cam profile of external tooth cam ring (1) and right axle shaft central gear (6) is meshed each composition rolling higher pair respectively.The wave number Z of right axle shaft central gear (6)
6with the number Z of portable sleeve roller (5)
2difference be 2.
The working principle of differential mechanism of the present invention is: when the driven wheel of differential of main reducing gear and external tooth cam ring (1) are driven and rotate with constant angular velocity, due to the radius vector change of the two-phase cam ring of external tooth cam ring (1), thrust is produced to portable sleeve roller (5), force portable sleeve roller (5) to be moved in the radial guide groove of left half axle frame (2) and promote left half axle frame (2) and rotate, meanwhile contacted with the higher pair of right axle shaft central gear (6) by portable sleeve roller (5) and also will promote right axle shaft central gear (6) and rotate, thus form a two degrees of freedom differential system, left half axle frame (2) then passes to power the left side be connected mutually with it with the motion on right axle shaft central gear (6) respectively, right wheel.Right axle shaft central gear (6) and left half axle frame (2) rotate respectively under the effect of driving force, but respective motion state is uncertain, are determined by the different road surface of left and right wheels, bend situation.When automobile straight-line travelling on straight road, when wheel on wheel on left half axle frame (2) and right axle shaft central gear (6) is without speed discrepancy, left half axle frame (2) is identical with the rotating speed of right axle shaft central gear (6), and namely differential mechanism does not have differential action.Now, in differential mechanism, each parts keep geo-stationary, and torque is inputted by external tooth cam ring (1), on average passes to left half axle frame (2) and right axle shaft central gear (6) through portable sleeve roller (5).Travel when automobile turning or on rough road, when there is speed discrepancy in left and right two-wheeled below, portable sleeve roller (5) ordering about by external tooth cam ring (1), left half axle frame (2) and right axle shaft central gear (6) is driven to rotate on the one hand, radially moving in the radial guide groove of left half axle frame (2) while rotating with left half axle frame (2) on the other hand, ensureing that left half axle frame (2) and right axle shaft central gear (6) are able to realize differential when not departing from transmission.And because portable sleeve roller (5) is to the effect of the moment that the active force of left half axle frame (2) and right axle shaft central gear (6) produces, the driving wheel making rotating speed slow can obtain the torque that the fast driving wheel of specific speed is larger.
For the differential property of differential mechanism of the present invention is described, if left and right wheel speed is respectively n after automobile
2, n
6, the rotating speed of external tooth cam ring (1) is n
1, then can be obtained by Fig. 7:
In formula, Z
2---the number of portable sleeve roller; Z
6---the number of teeth of right axle shaft central gear.
As established automobile to turn left, two front-wheels of automobile are under the effect of steering equipment (Fig. 8), and the axis of its axis and automobile two trailing wheel intersects at P point, now can be considered that whole automobile turns round around P point.When wheel and ground non-slip, the rotating speed of two trailing wheels should be directly proportional to turning radius, can be obtained by Fig. 8:
In formula, r---bend mean radius; L---rear tread partly.
Simultaneous solution formula (1), formula (2), and establish
then can obtain:
Under the vehicle parameter determined and driving conditions, n
1, s, L be known.Therefore, n
2with n
6only become with radius of turn r.Therefore differential mechanism of the present invention possesses differential function, the vehicle equipping this differential mechanism can by any half curve.
Investigate the mean speed of the vehicle both sides wheel of equipment differential mechanism of the present invention:
n
M＝0.5(n
6+n
2)(5)
During straight-line travelling, n
6=n
2=n
1:
n
M＝n
1(6)
During Turning travel, formula (3), formula (4) are substituted into formula (5) and obtain:
Order
Then formula (7) becomes:
n
M＝Wn
1(8)
Usual s>1, knows W<1 by formula (8), therefore has:
n
M＜n
1(9)
And n
mincrease with r and increase, when r → 0, n
m→ 0; As r →+∞, n
m→ n
1, namely when radius of turn r level off to 0 time, the speed of a motor vehicle also levels off to 0; Radius of turn level off to infinity time (straight-line travelling), the speed of a motor vehicle levels off to n
1.Visible, differential mechanism of the present invention has the function of bend automatic retarding, and slowing effect is directly related with bend emergency degree, and vehicle travels safer.
The present invention can be widely used in all wheeled vehicles needing differential mechanism, as automobile, engineering vehicle etc.
Claims (2)
1. pure rolling formula automobile differential, primarily of external tooth cam ring (1), left half axle frame (2), tapered roller bearing (3), right half shell (4), portable sleeve roller (5), right axle shaft central gear (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), deep groove ball bearing (17), sleeve pad (18) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " external tooth cam ring---roller---central gear " system, this system mainly comprises external tooth cam ring (1), left half axle frame (2), portable sleeve roller (5), right axle shaft central gear (6), differential is realized with this system, the outside of external tooth cam ring (1) is spur bevel gear, inside is two-phase cam ring i.e. oval interior Double-phase shock wave face, therefore external tooth cam ring (1) is a bevel gear of main reducing gear, it is again the interior Double-phase shock wave device in differential mechanism, main reducing gear and differential mechanism are organically integrated by external tooth cam ring (1), and external tooth cam ring (1) and right half shell (4) are fixedly connected into an entirety by screw (8) and are supported in frame by a pair tapered roller bearing (3), the left end of left half axle frame (2) is left half axle, left end and the left side wheel (19) of left half axle frame (2) are connected mutually, right-hand member is loaded in the interior double phase cam of external tooth cam ring (1), the right-hand member of left half axle frame (2) is tube-in-tube structure, has Z along this sleeve circumference
2individual radial guide groove, this guide groove is built with portable sleeve roller (5), and left half axle frame (2) is supported in external tooth cam ring (1) by a pair deep groove ball bearing (17), right axle shaft central gear (6) is the external cam with multiple concave portion, and number and the wave number of its projection are designated as Z
6right axle shaft central gear (6) is embedded in the right-hand member tube-in-tube structure of left half axle frame (2), the right-hand member of right axle shaft central gear (6) is right axle shaft, right-hand member and the right wheel (20) of right axle shaft central gear (6) are fixed together, and the left end of right axle shaft central gear (6) is supported within left half axle frame (2) by deep groove ball bearing (9), right-hand member is supported within right half shell (4) by deep groove ball bearing (7), portable sleeve roller (5) is made up of end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), the large end of end block (12) and bearing pin (16) is rectangular structure, needle roller sleeve (14) is limited on bearing pin (16) by the large end of end block (12) and bearing pin (16), and forms revolute pair with bearing pin (16) by needle roller (15), the radial guide groove inwall of the right-hand member tube-in-tube structure of left half axle frame (2) radially has the groove filling needle roller (10), at this groove built with some needle rollers (10), portable sleeve roller (5) is contained in the radial guide groove of the right-hand member sleeve of left half axle frame (2), the large end of its end block (12) and bearing pin (16) can form rolling annexation to moving and passing through the some needle rollers (10) in guide groove with the radial guide groove of left half axle frame (2) in the radial guide groove central diameter of left half axle frame (2), the contact between portable sleeve roller (5) and left half axle frame (2) is made to become rolling friction from sliding friction, the external cam profile of the outer cylinder surface of needle roller sleeve (14) of portable sleeve roller (5) and the interior double phase cam profile of external tooth cam ring (1) and right axle shaft central gear (6) is meshed each composition rolling higher pair respectively, the wave number Z of right axle shaft central gear (6)
6with the number Z of portable sleeve roller (5)
2difference be 2.
2. pure rolling formula automobile differential according to claim 1, it is characterized in that: external tooth cam ring is multiple tooth engagement with portable sleeve roller, portable sleeve roller with right axle shaft central gear, therefore contact ratio is large, bearing capacity is large, can realize high-power, high pulling torque differential drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738437.XA CN105257801A (en) | 2015-11-04 | 2015-11-04 | Pure rolling type automobile differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738437.XA CN105257801A (en) | 2015-11-04 | 2015-11-04 | Pure rolling type automobile differential mechanism |
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|---|---|
| CN105257801A true CN105257801A (en) | 2016-01-20 |
Family
ID=55097632
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|---|---|---|---|
| CN201510738437.XA Pending CN105257801A (en) | 2015-11-04 | 2015-11-04 | Pure rolling type automobile differential mechanism |
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|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485296A (en) * | 2016-01-22 | 2016-04-13 | 四川大学 | Rolling needle roller block type automobile differential characterized by arbitrary tooth difference internal cam shock waves |
| CN105485294A (en) * | 2016-01-21 | 2016-04-13 | 四川大学 | Automotive differential mechanism with needle roller and roller blocks driven by double-phase inner shock wave cam |
| CN105485295A (en) * | 2016-01-22 | 2016-04-13 | 四川大学 | Internal gear driven automobile differential provided with biphase outer cam and rolling needle roller blocks |
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| CN2797777Y (en) * | 2005-05-19 | 2006-07-19 | 山东理工大学 | Axial slider cam type differential mechanism |
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| CN2797777Y (en) * | 2005-05-19 | 2006-07-19 | 山东理工大学 | Axial slider cam type differential mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485294A (en) * | 2016-01-21 | 2016-04-13 | 四川大学 | Automotive differential mechanism with needle roller and roller blocks driven by double-phase inner shock wave cam |
| CN105485296A (en) * | 2016-01-22 | 2016-04-13 | 四川大学 | Rolling needle roller block type automobile differential characterized by arbitrary tooth difference internal cam shock waves |
| CN105485295A (en) * | 2016-01-22 | 2016-04-13 | 四川大学 | Internal gear driven automobile differential provided with biphase outer cam and rolling needle roller blocks |
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