CN105370839A - Outer cam shock wave-type pure rolling automobile differential mechanism with arbitrary tooth difference - Google Patents
Outer cam shock wave-type pure rolling automobile differential mechanism with arbitrary tooth difference Download PDFInfo
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- CN105370839A CN105370839A CN201510931722.3A CN201510931722A CN105370839A CN 105370839 A CN105370839 A CN 105370839A CN 201510931722 A CN201510931722 A CN 201510931722A CN 105370839 A CN105370839 A CN 105370839A
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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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Abstract
The invention discloses an outer cam shock wave-type pure rolling automobile differential mechanism with an arbitrary tooth difference and belongs to the technical field of mechanical transmission. The invention provides a novel automobile differential. A bevel gear is arranged at the outer part of an outer tooth inner retainer; the inner part of the outer tooth inner retainer has a sleeve structure; a movable sleeve roller is in multi-tooth meshing with the outer tooth inner retainer, and a left half shaft multiphase outer cam and a right half shaft inner gear are in multi-tooth meshing; and all meshing parts are in pure rolling contact. According to the outer cam shock wave-type pure rolling automobile differential mechanism provided by the invention, the power is input by the bevel gear arranged at the outer part of the outer tooth inner retainer, transferred to the movable sleeve roller through the outer tooth inner retainer and then transferred to the left half shaft multiphase outer cam which is fixedly connected with a left automobile wheel and the right half shaft inner gear which is fixedly connected with a right automobile wheel through the movable sleeve roller, so that a differential velocity between the left automobile wheel and the right automobile wheel is realized. The outer cam shock wave-type pure rolling automobile differential mechanism eliminates a planetary gear system in the traditional automobile differential mechanism, has compact structure, small size, light weight, large coincidence degree, high carrying capacity and high transmission efficiency, is in multi-tooth meshing and can be widely used in various wheeled vehicles needing differential mechanisms, such as automobiles, construction vehicles and the like.
Description
Technical field
The present invention relates to a kind of difference of tooth arbitrarily external cam shock wave type high pure rolling 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 new automobile differential mechanism---tooth difference external cam shock wave type high pure rolling automobile differential arbitrarily.
The technological scheme that the present invention takes for its technical problem of solution is: a kind of difference of tooth arbitrarily external cam shock wave type high pure rolling automobile differential, primarily of retainer in external tooth (1), the heterogeneous external cam of left half axle (2), tapered roller bearing (3), right half shell (4), portable sleeve roller (5), right axle shaft internal 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), sleeve pad (17), deep groove ball bearing (18) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth retainer-roller-left half axle heterogeneous external cam-right axle shaft internal gear " system, this system mainly comprises retainer in external tooth (1), portable sleeve roller (5), the heterogeneous external cam of left half axle (2), right axle shaft internal gear (6), realizes differential with this system, forms differential mechanism, in external tooth, the outside of retainer (1) is the driven spur bevel gear of main reducing gear, inside is tube-in-tube structure, has Z along this tube-in-tube structure circumference
1individual radial guide groove, this guide groove is built with portable sleeve roller (5), therefore claim this tube-in-tube structure to be retainer, so retainer (1) is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by retainer (1), and in external tooth, retainer (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 heterogeneous external cam of left half axle (2) is heterogeneous external cam, this heterogeneous external cam has three to be mutually 120 ° of angles and the three-phase external cam of the projection of axle center symmetry, himself complete mass balance, its profilogram is cosine curve, the heterogeneous external cam of left half axle (2) is embedded in the tube-in-tube structure of retainer in external tooth (1), the left end of the heterogeneous external cam of left half axle (2) is left half axle, the heterogeneous external cam of left half axle (2) is connected mutually by left half axle and left side wheel (19), the right-hand member of the heterogeneous external cam of left half axle (2) is supported within right axle shaft internal gear (6) by deep groove ball bearing (9), left end is supported within retainer in external tooth (1) by deep groove ball bearing (18), right axle shaft internal gear (6) is the internal gear that inside has multiple projection, and the number of its projection is called and the number of teeth of right axle shaft internal gear (6) is designated as Z
6, the internal gear tooth curve of right axle shaft internal gear (6) is that portable sleeve roller (5) is rotated with retainer in external tooth (1) on the one hand, on the other hand again in external tooth retainer (1) radial guide groove in movement process in residing for the envelope of a series of position, in external tooth, the tube-in-tube structure of retainer (1) is loaded in the internal gear of right axle shaft internal gear (6), the right-hand member of right axle shaft internal gear (6) is right axle shaft, right axle shaft internal gear (6) is fixed together by right axle shaft and the right wheel (20), right axle shaft internal gear (6) is supported in right half shell (4) by a pair deep groove ball bearing (7), above-mentioned portable sleeve roller (5) is made up of end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), wherein the large end of end block (12) and bearing pin (16) is rectangle block 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), in external tooth the tube-in-tube structure of retainer (1) radial guide groove inwall on radially have 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 tube-in-tube structure of retainer in external tooth (1), the large end of its end block (12) and bearing pin (16) can in external tooth the radial guide groove central diameter of retainer (1) to move and the some needle rollers (10) passed through in guide groove form rolling annexation with the radial guide groove of retainer (1) in external tooth, the contact in portable sleeve roller (5) and external tooth between retainer (1) is made to become rolling friction from sliding friction, the internal gear tooth of the outer cylinder surface of needle roller sleeve (14) of portable sleeve roller (5) and the external cam profile of the heterogeneous external cam of left half axle (2) and right axle shaft internal gear (6) is meshed each composition rolling higher pair respectively, the tooth number Z of right axle shaft internal gear (6)
6with the number Z of portable sleeve roller (5)
1difference is 3.
Other NM place of differential mechanism of the present invention, connecting etc. of external cam as heterogeneous in left half axle (2), right axle shaft internal gear (6) and wheel of vehicle all adopts 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 " in external tooth retainer-roller-left half axle heterogeneous external cam-right axle shaft internal gear " system, this system mainly comprises retainer in external tooth, portable sleeve roller, the heterogeneous external cam of left half axle, right axle shaft internal gear, realize differential with this system, form differential mechanism.
2. in external tooth, the outside of retainer is the driven spur bevel gear of main reducing gear, inside is tube-in-tube structure, has Z along this tube-in-tube structure circumference
1individual radial guide groove, this guide groove is built with portable sleeve roller, therefore claim this tube-in-tube structure to be retainer, so retainer is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by retainer, and in external tooth, retainer and right half shell are fixedly connected into an entirety by screw and are supported in frame by a pair tapered roller bearing, the heterogeneous external cam of left half axle is heterogeneous external cam, this heterogeneous external cam has three to be mutually 120 ° of angles and the three-phase external cam of the projection of axle center symmetry, himself complete mass balance, its profilogram is cosine curve, the heterogeneous external cam of left half axle is embedded in the tube-in-tube structure of retainer in external tooth, the left end of the heterogeneous external cam of left half axle is left half axle, the heterogeneous external cam of left half axle is connected with left side wheel by left half axle, the right-hand member of the heterogeneous external cam of left half axle is supported within right axle shaft internal gear by deep groove ball bearing, left end to be supported in external tooth within retainer by another deep groove ball bearing, right axle shaft internal gear is the internal gear that inside has multiple projection, the tooth curve of this internal gear is that portable sleeve roller rotates with retainer in external tooth on the one hand, on the other hand again in external tooth retainer radial guide groove in movement process in residing for the envelope of a series of position, in external tooth, the tube-in-tube structure of retainer is loaded in the internal gear of right axle shaft internal gear, the right-hand member of right axle shaft internal gear is right axle shaft, right axle shaft internal gear is connected together by right axle shaft and the right wheel, and right axle shaft internal gear is supported in right half shell by a pair deep groove ball bearing.Above-mentioned portable sleeve roller is made up of end block, pin, needle roller sleeve, needle roller, bearing pin, and wherein the large end of end block and bearing pin is rectangle block 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; In external tooth the tube-in-tube structure of retainer radial guide groove inwall on radially have 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 tube-in-tube structure of retainer in external tooth, the large end of its end block and bearing pin can the radial guide groove central diameter of retainer to move and in the some needle rollers passed through in guide groove and external tooth, the radial guide groove of retainer forms rolling annexation, make the contact in portable sleeve roller and external tooth between retainer become rolling friction from sliding friction in external tooth; The outer cylinder surface of the needle roller sleeve of portable sleeve roller and the external cam profile of the heterogeneous external cam of left half axle and the internal gear tooth of right axle shaft internal gear are meshed each composition rolling higher pair respectively; The tooth number Z of right axle shaft internal gear
6with the number Z of portable sleeve roller
1difference is 3.
3. driving force passes in external tooth and passes to the heterogeneous external cam of left half axle and right axle shaft internal gear through portable sleeve roller after retainer, thus pass to left and right wheel, and portable sleeve roller be rolling friction between retainer in the heterogeneous external cam of left half axle, external tooth and right axle shaft internal gear and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
4. portable sleeve roller is multiple tooth engagement with between retainer in the heterogeneous external cam of left half axle, external tooth and right axle shaft internal gear, therefore contact ratio is large, and bearing capacity is large, can realize high-power, high pulling torque differential drive.
The present invention, compared with existing conventional automobile differential, has following useful technique effect:
1. compact structure, axially and radial dimension little, volume is little, and weight is lighter
The present invention adopts " in external tooth retainer-roller-left half axle heterogeneous external cam-right axle shaft internal gear " system to replace the epicyclic gear system of conventional carrier, the axis of transmission device and radial dimension are all less, 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 in the external cam profile of portable sleeve roller and the heterogeneous external cam of left half axle, external tooth retainer and right axle shaft internal gear Internal periphery between be multiple tooth engagement, 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 the heterogeneous external cam of left half axle, with right axle shaft internal gear, and external tooth in three engagement pair that formed of retainer 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. stress equalization, smooth running
The heterogeneous external cam of left half axle has three to be mutually 120 ° of angles and the three-phase external cam of the projection of axle center symmetry, himself complete mass balance, stressed symmetry, 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 the structural representation of any tooth difference external cam shock wave type high pure rolling automobile differential
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is the structural representation of right axle shaft internal gear
Fig. 4 is the structural representation of retainer in external tooth
Fig. 5 is the structural representation of portable sleeve roller
Fig. 6 is the structural representation of the heterogeneous external cam of left half axle
Fig. 7 is the differential gearing schematic diagram of any tooth difference external cam shock wave type high pure rolling 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: retainer in 1 external tooth; The heterogeneous external cam of 2 left half axle; 3 tapered roller bearings; 4 right half shells; 5 portable sleeve rollers; 6 right axle shaft internal gears; 7 deep groove ball bearings; 8 screws; 9 deep groove ball bearings; 10 needle rollers; The active spur bevel gear of 11 main reducing gears; 12 end blocks; 13 pins; 14 needle roller sleeves; 15 needle rollers; 16 bearing pins; 17 sleeve pads; 18 deep groove ball bearings; 19 left wheels; 20 right wheels.
Specific embodiment
Any tooth difference external cam shock wave type high pure rolling automobile differential shown in Fig. 1 to Fig. 6, primarily of retainer in external tooth (1), the heterogeneous external cam of left half axle (2), tapered roller bearing (3), right half shell (4), portable sleeve roller (5), right axle shaft internal 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), sleeve pad (17), deep groove ball bearing (18) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth retainer-roller-left half axle heterogeneous external cam-right axle shaft internal gear " system, this system mainly comprises retainer in external tooth (1), portable sleeve roller (5), the heterogeneous external cam of left half axle (2), right axle shaft internal gear (6), realizes differential with this system, forms differential mechanism, in external tooth, the outside of retainer (1) is the driven spur bevel gear of main reducing gear, inside is tube-in-tube structure, has Z along this tube-in-tube structure circumference
1individual radial guide groove, this guide groove is built with portable sleeve roller (5), therefore claim this tube-in-tube structure to be retainer, so retainer (1) is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by retainer (1), and in external tooth, retainer (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 heterogeneous external cam of left half axle (2) is heterogeneous external cam, this heterogeneous external cam has three to be mutually 120 ° of angles and the three-phase external cam of the projection of axle center symmetry, himself complete mass balance, its profilogram is cosine curve, the heterogeneous external cam of left half axle (2) is embedded in the tube-in-tube structure of retainer in external tooth (1), the left end of the heterogeneous external cam of left half axle (2) is left half axle, the heterogeneous external cam of left half axle (2) is connected mutually by left half axle and left side wheel (19), the right-hand member of the heterogeneous external cam of left half axle (2) is supported within right axle shaft internal gear (6) by deep groove ball bearing (9), left end is supported within retainer in external tooth (1) by deep groove ball bearing (18), right axle shaft internal gear (6) is the internal gear that inside has multiple projection, and the number of its projection is called and the number of teeth of right axle shaft internal gear (6) is designated as Z
6, the internal gear tooth curve of right axle shaft internal gear (6) is that portable sleeve roller (5) is rotated with retainer in external tooth (1) on the one hand, on the other hand again in external tooth retainer (1) radial guide groove in movement process in residing for the envelope of a series of position, in external tooth, the tube-in-tube structure of retainer (1) is loaded in the internal gear of right axle shaft internal gear (6), the right-hand member of right axle shaft internal gear (6) is right axle shaft, right axle shaft internal gear (6) is fixed together by right axle shaft and the right wheel (20), right axle shaft internal gear (6) is supported in right half shell (4) by a pair deep groove ball bearing (7), above-mentioned portable sleeve roller (5) is made up of end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), wherein the large end of end block (12) and bearing pin (16) is rectangle block 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), in external tooth the tube-in-tube structure of retainer (1) radial guide groove inwall on radially have 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 tube-in-tube structure of retainer in external tooth (1), the large end of its end block (12) and bearing pin (16) can in external tooth the radial guide groove central diameter of retainer (1) to move and the some needle rollers (10) passed through in guide groove form rolling annexation with the radial guide groove of retainer (1) in external tooth, the contact in portable sleeve roller (5) and external tooth between retainer (1) is made to become rolling friction from sliding friction, the internal gear tooth of the outer cylinder surface of needle roller sleeve (14) of portable sleeve roller (5) and the external cam profile of the heterogeneous external cam of left half axle (2) and right axle shaft internal gear (6) is meshed each composition rolling higher pair respectively, the tooth number Z of right axle shaft internal gear (6)
6with the number Z of portable sleeve roller (5)
1difference is 3.
The working principle of differential mechanism of the present invention is:
When in the driven wheel of differential and external tooth of main reducing gear, retainer (1) is driven and is rotated with constant angular velocity, in external tooth, the radial guide groove of retainer (1) produces thrust to portable sleeve roller (5), portable sleeve roller (5) contacts to engage and promote them with right axle shaft internal gear (6) with the heterogeneous external cam of left half axle (2) simultaneously and rotates, meanwhile portable sleeve roller (5) also in external tooth retainer (1) radial guide groove in move, thus form a two degrees of freedom differential system, the heterogeneous external cam of left half axle (2) then passes to power the left side be connected mutually with it with the motion on right axle shaft internal gear (6) respectively, right wheel.Right axle shaft internal gear (6) and the heterogeneous external cam of left half axle (2) are rotated 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 in the heterogeneous external cam of left half axle (2) and right axle shaft internal gear (6) is without speed discrepancy, the heterogeneous external cam of left half axle (2) is identical with the rotating speed of right axle shaft internal 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 retainer in external tooth (1), on average passes to the heterogeneous external cam of left half axle (2) and right axle shaft internal 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 retainer in external tooth (1), the heterogeneous external cam of left half axle (2) and right axle shaft internal gear (6) is driven to rotate on the one hand, on the other hand while rotating with retainer in external tooth (1) in external tooth retainer (1) radial guide groove in radially move, ensure that the heterogeneous external cam of left half axle (2) and right axle shaft internal 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 the heterogeneous external cam of left half axle (2) and right axle shaft internal 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, in external tooth, the rotating speed of retainer (1) is n
1, then can be obtained by Fig. 7:
In formula, Z
1the number of-portable sleeve roller; Z
6the number of teeth of-right axle shaft internal 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):
Under the vehicle parameter determined and driving conditions, n
1, Z
1, Z
6, L is 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.
The present invention can be widely used in all wheeled vehicles needing differential mechanism, as automobile, engineering vehicle etc.
Claims (3)
1. any tooth difference external cam shock wave type high pure rolling automobile differential, primarily of retainer in external tooth (1), the heterogeneous external cam of left half axle (2), tapered roller bearing (3), right half shell (4), portable sleeve roller (5), right axle shaft internal 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), sleeve pad (17), deep groove ball bearing (18) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth retainer one roller one left half axle heterogeneous external cam one right axle shaft internal gear " system, this system mainly comprises retainer in external tooth (1), portable sleeve roller (5), the heterogeneous external cam of left half axle (2), right axle shaft internal gear (6), differential is realized with this system, form differential mechanism, in external tooth, the outside of retainer (1) is the driven spur bevel gear of main reducing gear, inside is tube-in-tube structure, has Z along this tube-in-tube structure circumference
1individual radial guide groove, this guide groove is built with portable sleeve roller (5), therefore claim this tube-in-tube structure to be retainer, so retainer (1) is a bevel gear of main reducing gear in external tooth, it is again a component in differential mechanism, in external tooth, main reducing gear and differential mechanism are organically integrated by retainer (1), and in external tooth, retainer (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 heterogeneous external cam of left half axle (2) is heterogeneous external cam, this heterogeneous external cam has three to be mutually 120 ° of angles and the three-phase external cam of the projection of axle center symmetry, himself complete mass balance, its profilogram is cosine curve, the heterogeneous external cam of left half axle (2) is embedded in the tube-in-tube structure of retainer in external tooth (1), the left end of the heterogeneous external cam of left half axle (2) is left half axle, the heterogeneous external cam of left half axle (2) is connected mutually by left half axle and left side wheel (19), the right-hand member of the heterogeneous external cam of left half axle (2) is supported within right axle shaft internal gear (6) by deep groove ball bearing (9), left end is supported within retainer in external tooth (1) by deep groove ball bearing (18), right axle shaft internal gear (6) is the internal gear that inside has multiple projection, and the number of its projection is called and the number of teeth of right axle shaft internal gear (6) is designated as Z
6, the internal gear tooth curve of right axle shaft internal gear (6) is that portable sleeve roller (5) is rotated with retainer in external tooth (1) on the one hand, on the other hand again in external tooth retainer (1) radial guide groove in movement process in residing for the envelope of a series of position, in external tooth, the tube-in-tube structure of retainer (1) is loaded in the internal gear of right axle shaft internal gear (6), the right-hand member of right axle shaft internal gear (6) is right axle shaft, right axle shaft internal gear (6) is fixed together by right axle shaft and the right wheel (20), right axle shaft internal gear (6) is supported in right half shell (4) by a pair deep groove ball bearing (7), above-mentioned portable sleeve roller (5) is made up of end block (12), pin (13), needle roller sleeve (14), needle roller (15), bearing pin (16), wherein the large end of end block (12) and bearing pin (16) is rectangle block 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), in external tooth the tube-in-tube structure of retainer (1) radial guide groove inwall on radially have 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 tube-in-tube structure of retainer in external tooth (1), the large end of its end block (12) and bearing pin (16) can in external tooth the radial guide groove central diameter of retainer (1) to move and the some needle rollers (10) passed through in guide groove form rolling annexation with the radial guide groove of retainer (1) in external tooth, the contact in portable sleeve roller (5) and external tooth between retainer (1) is made to become rolling friction from sliding friction, the internal gear tooth of the outer cylinder surface of needle roller sleeve (14) of portable sleeve roller (5) and the external cam profile of the heterogeneous external cam of left half axle (2) and right axle shaft internal gear (6) is meshed each composition rolling higher pair respectively, the tooth number Z of right axle shaft internal gear (6)
6with the number Z of portable sleeve roller (5)
1difference is 3.
2. any tooth difference external cam shock wave type high pure rolling automobile differential according to claim 1, it is characterized in that: the heterogeneous external cam of left half axle is multiple tooth engagement with portable sleeve roller, portable sleeve roller with right axle shaft internal gear, therefore contact ratio is large, bearing capacity is large, can realize high-power, high pulling torque differential drive.
3. any tooth difference external cam shock wave type high pure rolling automobile differential according to any one of claim 1 to 2, it is characterized in that: portable sleeve roller be rolling friction between retainer in the heterogeneous external cam of left half axle, external tooth and right axle shaft internal gear and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931722.3A CN105370839A (en) | 2015-12-15 | 2015-12-15 | Outer cam shock wave-type pure rolling automobile differential mechanism with arbitrary tooth difference |
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|---|---|---|---|
| CN201510931722.3A CN105370839A (en) | 2015-12-15 | 2015-12-15 | Outer cam shock wave-type pure rolling automobile differential mechanism with arbitrary tooth difference |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750066A (en) * | 2020-06-30 | 2020-10-09 | 李平原 | Internal gear cam type differential mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111750066B (en) * | 2020-06-30 | 2023-07-07 | 李平原 | Internal gear cam type differential mechanism |
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