CN105508550A - Random-tooth-difference outer cam shock wave roller pin and roller block type differential mechanism - Google Patents
Random-tooth-difference outer cam shock wave roller pin and roller block type differential mechanism Download PDFInfo
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- CN105508550A CN105508550A CN201610049255.6A CN201610049255A CN105508550A CN 105508550 A CN105508550 A CN 105508550A CN 201610049255 A CN201610049255 A CN 201610049255A CN 105508550 A CN105508550 A CN 105508550A
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- tooth
- retainer
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- roller
- internal 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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- 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
- F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
-
- 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
- F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
- F16H2048/423—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon characterised by bearing arrangement
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a random-tooth-difference outer cam shock wave roller pin and roller block type differential mechanism and belongs to the technical field of mechanical transmission. The novel automobile differential mechanism is characterized in that a bevel gear is arranged outside an outer-tooth inner retainer, a sleeve structure is arranged inside the outer-tooth inner retainer, and a roller pin and roller block and the outer-tooth inner retainer as well as a left half shaft multi-phase outer cam and a right half shaft inner gear are in pure rolling contact connection and in multi-tooth meshing. Power is input by the bevel gear outside the outer-tooth inner retainer and transmitted to the roller pin and roller block through the sleeve structure of the outer-tooth inner retainer, and then the roller pin and roller block transmits the power to the left half shaft multi-phase outer cam fixedly connected with a left wheel and the right half shaft inner gear fixedly connected with a right wheel so as to enable the left wheel and the right wheel to be differential in speed. A planet gear system in a conventional automobile differential mechanism is omitted, so that the differential mechanism is compact in structure, small in size, supportive of multi-tooth meshing and high in contact ratio, load-bearing capability and transmission efficiency and can be widely used for various wheeled vehicles like automobiles and engineering vehicles needing the differential mechanism.
Description
Technical field
The present invention relates to a kind of difference of tooth arbitrarily external cam shock wave needle roller and roll Subblock-wise 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; Spur bevel gear transmission contact ratio is low, therefore bearing capacity is low, and transmission efficiency is not high.
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 automobile differential one by one arbitrarily tooth difference external cam shock wave needle roller roll Subblock-wise automobile differential.
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 needle roller rolls Subblock-wise 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), needle roller roller block (5), right axle shaft internal gear (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), sleeve pad (12), deep groove ball bearing (13) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth retainer one needle roller roller block one left half axle heterogeneous external cam one right axle shaft internal gear " system, this system mainly comprises retainer in external tooth (1), needle roller roller block (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, at this guide groove built with needle roller roller block (5), therefore 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), above-mentioned needle roller roller block (5) is made up of backbone block (16), pin (17), needle roller (18), needle roller sleeve (19), be drive fit between the two ends of pin (17) and the hole of backbone block (16) both sides, the needle roller sleeve (19) being arranged on backbone block (16) two ends is supported by pin (17) and passes through needle roller (18) and forms rolling connecting relation with backbone block (16), 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), can move radially in this guide groove in the radial guide groove that needle roller roller block (5) is contained in the tube-in-tube structure of retainer in external tooth (1), the backbone block (16) of needle roller roller block (5) forms rolling connecting relation by the some needle rollers (10) in guide groove and the radial guide groove of retainer (1) in external tooth, namely needle roller (10) makes the contact in needle roller roller block (5) and external tooth between retainer (1) become rolling friction from sliding friction, 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 rear wheel (14), 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 (13), 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 needle roller roller block (5) rotates 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, the envelope of residing a series of position, its outer end needle roller sleeve (19), 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 rear wheel (15), right axle shaft internal gear (6) is supported in right half shell (4) by a pair deep groove ball bearing (7), the needle roller sleeve (19) at needle roller roller block (5) two ends is meshed with the internal gear tooth of right axle shaft internal gear (6) and the external cam profile of the heterogeneous external cam of left half axle (2) each composition pure rolling higher pair respectively, the tooth number Z of right axle shaft internal gear (6)
6with the number Z of needle roller roller block (5)
1difference be 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 one needle roller roller block one left half axle heterogeneous external cam one right axle shaft internal gear " system, this system mainly comprises retainer in external tooth, needle roller roller block, 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, at this guide groove built with needle roller roller block, therefore 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, above-mentioned needle roller roller block is made up of backbone block, pin, needle roller, needle roller sleeve, is drive fit between the two ends of pin and the hole of backbone block both sides, and the needle roller sleeve being arranged on backbone block two ends is supported by pin and forms rolling connecting relation by needle roller and backbone block, 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, also can move radially in this guide groove in the radial guide groove of the tube-in-tube structure of the packaged retainer in external tooth of needle roller roller, the backbone block of needle roller roller block forms rolling connecting relation by the radial guide groove of retainer in some needle rollers in guide groove and external tooth, and the needle roller namely in guide groove makes the contact in needle roller roller block and external tooth between retainer become rolling friction from sliding friction, 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 mutually by left half axle and left side rear wheel, 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 deep groove ball bearing, right axle shaft internal gear is the internal gear that inside has multiple projection, the number of its projection is called the number of teeth of right axle shaft internal gear, the internal gear tooth curve of right axle shaft internal gear is that needle roller roller block 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, the envelope of a series of position residing for its outer end needle roller sleeve, 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 fixed together by right axle shaft and the right rear wheel, right axle shaft internal gear is supported in right half shell by a pair deep groove ball bearing, the needle roller sleeve at needle roller roller block two ends is meshed with the internal gear tooth of right axle shaft internal gear and the external cam profile of the heterogeneous external cam of left half axle each composition pure rolling higher pair respectively, the tooth number Z of right axle shaft internal gear
6with the number Z of needle roller roller block
1difference be 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 needle roller roller block after retainer, thus pass to left and right rear wheel, and needle roller roller block be pure rolling friction between retainer, the heterogeneous external cam of left half axle, right axle shaft internal gear three in external tooth and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
4. needle roller roller block 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 one needle roller roller block one left half axle heterogeneous external cam one right axle shaft internal gear " system to replace the epicyclic gear system of orthodox car differential mechanism, the axis of transmission device and radial dimension are all less, thus the compact structure of differential mechanism of the present invention, volume are little, lightweight.
2. contact ratio is large, and bearing capacity is high
In the present invention in the external cam profile of needle roller roller block 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 needle roller roller block 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
Needle roller roller block be pure rolling friction between retainer, the heterogeneous external cam of left half axle, right axle shaft internal gear in external tooth and connect, therefore differential drive efficiency of the present invention is higher.
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 that any tooth difference external cam shock wave needle roller rolls Subblock-wise automobile differential;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the structural representation of right axle shaft internal gear;
Fig. 5 is the structural representation of the heterogeneous external cam of left half axle;
Fig. 6 is the structural representation of retainer in external tooth;
Fig. 7 is the assembling schematic diagram of needle roller roller block;
Fig. 8 is the structural representation of backbone block;
Fig. 9 is the differential gearing schematic diagram that any tooth difference external cam shock wave needle roller rolls Subblock-wise automobile differential;
The relative position relation schematic diagram of each wheel and differential mechanism when Figure 10 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 needle roller roller blocks; 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 sleeve pads; 13 deep groove ball bearings; 14 left side rear wheels; Rear wheel on the right of in the of 15; 16 backbone block; 17 pins; 18 needle rollers; 19 needle roller sleeves.
Specific embodiment
Shown in Fig. 1 to Fig. 8, any tooth difference external cam shock wave needle roller rolls Subblock-wise 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), needle roller roller block (5), right axle shaft internal gear (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), sleeve pad (12), deep groove ball bearing (13) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth retainer one needle roller roller block one left half axle heterogeneous external cam one right axle shaft internal gear " system, this system mainly comprises retainer in external tooth (1), needle roller roller block (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, at this guide groove built with needle roller roller block (5), therefore 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), above-mentioned needle roller roller block (5) is made up of backbone block (16), pin (17), needle roller (18), needle roller sleeve (19), be drive fit between the two ends of pin (17) and the hole of backbone block (16) both sides, the needle roller sleeve (19) being arranged on backbone block (16) two ends is supported by pin (17) and passes through needle roller (18) and forms rolling connecting relation with backbone block (16), 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), can move radially in this guide groove in the radial guide groove that needle roller roller block (5) is contained in the tube-in-tube structure of retainer in external tooth (1), the backbone block (16) of needle roller roller block (5) forms rolling connecting relation by the some needle rollers (10) in guide groove and the radial guide groove of retainer (1) in external tooth, namely needle roller (10) makes the contact in needle roller roller block (5) and external tooth between retainer (1) become rolling friction from sliding friction, 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 rear wheel (14), 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 (13), 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 needle roller roller block (5) rotates 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, the envelope of residing a series of position, its outer end needle roller sleeve (19), 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 rear wheel (15), right axle shaft internal gear (6) is supported in right half shell (4) by a pair deep groove ball bearing (7), the needle roller sleeve (19) at needle roller roller block (5) two ends is meshed with the internal gear tooth of right axle shaft internal gear (6) and the external cam profile of the heterogeneous external cam of left half axle (2) each composition pure rolling higher pair respectively, the tooth number Z of right axle shaft internal gear (6)
6with the number Z of needle roller roller block (5)
1difference be 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 rotates with constant angular velocity, in external tooth, the radial guide groove of retainer (1) produces thrust to needle roller roller block (5), needle roller roller block (5) contacts to engage and promote them with right axle shaft internal gear (6) higher pair with the heterogeneous external cam of left half axle (2) simultaneously and rotates, meanwhile needle roller roller block (5) also in external tooth retainer (1) radial guide groove in move, thus form a two degrees of freedom differential system, motion on the heterogeneous external cam of left half axle (2) and right axle shaft internal gear (6) and power then pass to a coupled left side respectively, right rear 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 rear wheel, 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 needle roller roller block (5).Travel when automobile turning or on rough road, when there is speed discrepancy in left and right two-wheeled below, needle roller roller block (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 needle roller roller block (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. 9:
In formula, Z
1one is the number of needle roller roller block; Z
6one is the 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 (Figure 10), 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 Figure 10:
In formula, r mono-bend mean radius; L mono-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. tooth difference external cam shock wave needle roller rolls Subblock-wise automobile differential arbitrarily, primarily of retainer in external tooth (1), the heterogeneous external cam of left half axle (2), tapered roller bearing (3), right half shell (4), needle roller roller block (5), right axle shaft internal gear (6), deep groove ball bearing (7), screw (8), deep groove ball bearing (9), needle roller (10), sleeve pad (12), deep groove ball bearing (13) forms, it is characterized in that: the epicyclic gear system having abandoned orthodox car differential mechanism, replace " in external tooth retainer-needle roller roller block-left half axle heterogeneous external cam-right axle shaft internal gear " system, this system mainly comprises retainer in external tooth (1), needle roller roller block (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, at this guide groove built with needle roller roller block (5), therefore 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), above-mentioned needle roller roller block (5) is made up of backbone block (16), pin (17), needle roller (18), needle roller sleeve (19), be drive fit between the two ends of pin (17) and the hole of backbone block (16) both sides, the needle roller sleeve (19) being arranged on backbone block (16) two ends is supported by pin (17) and passes through needle roller (18) and forms rolling connecting relation with backbone block (16), 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), can move radially in this guide groove in the radial guide groove that needle roller roller block (5) is contained in the tube-in-tube structure of retainer in external tooth (1), the backbone block (16) of needle roller roller block (5) forms rolling connecting relation by the some needle rollers (10) in guide groove and the radial guide groove of retainer (1) in external tooth, namely needle roller (10) makes the contact in needle roller roller block (5) and external tooth between retainer (1) become rolling friction from sliding friction, the heterogeneous external cam of left half axle (2) is heterogeneous external cam, this heterogeneous external cam has three to be mutually 1200 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 rear wheel (14), 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 (13), 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 needle roller roller block (5) rotates 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, the envelope of residing a series of position, its outer end needle roller sleeve (19), 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 rear wheel (15), right axle shaft internal gear (6) is supported in right half shell (4) by a pair deep groove ball bearing (7), the needle roller sleeve (19) at needle roller roller block (5) two ends is meshed with the internal gear tooth of right axle shaft internal gear (6) and the external cam profile of the heterogeneous external cam of left half axle (2) each composition pure rolling higher pair respectively, the tooth number Z of right axle shaft internal gear (6)
6with the number Z of needle roller roller block (5)
1difference be 3.
2. any tooth difference external cam shock wave needle roller according to claim 1 rolls Subblock-wise automobile differential, it is characterized in that: in the external cam profile of needle roller roller block 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 needle roller roller block 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. any tooth difference external cam shock wave needle roller according to claim 1 rolls Subblock-wise automobile differential, it is characterized in that: needle roller roller block be pure rolling friction between retainer, the heterogeneous external cam of left half axle, right axle shaft internal gear three in external tooth and connect, therefore the transmission efficiency of differential mechanism of the present invention is high.
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CN201610049255.6A CN105508550A (en) | 2016-01-25 | 2016-01-25 | Random-tooth-difference outer cam shock wave roller pin and roller block type differential mechanism |
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CN201610049255.6A CN105508550A (en) | 2016-01-25 | 2016-01-25 | Random-tooth-difference outer cam shock wave roller pin and roller block type differential mechanism |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1689285A (en) * | 1925-10-06 | 1928-10-30 | Gottfried Weidmann Meier | Differential gear for self-propelled vehicles |
JP2001074122A (en) * | 1999-09-02 | 2001-03-23 | Honda Motor Co Ltd | Differential device |
CN1269664C (en) * | 1999-09-02 | 2006-08-16 | 本田技研工业株式会社 | Saddle-type vehicle carrying with differential limiting device |
US20080188341A1 (en) * | 2007-02-06 | 2008-08-07 | Gm Global Technology Operations, Inc. | Cycloid limited slip differential and method |
DE102008061191A1 (en) * | 2008-12-09 | 2010-06-10 | Schaeffler Kg | Differential gear e.g. roller bearing differential gear, for transmission of drive torque to front and rear wheels of all-wheel-driven vehicle, has paths formed in drive gears with gradient wave-shaped in radial direction of rotation axis |
CN105257802A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Internal gear driven type pure rolling automobile differential mechanism with random tooth difference |
-
2016
- 2016-01-25 CN CN201610049255.6A patent/CN105508550A/en active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
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US1689285A (en) * | 1925-10-06 | 1928-10-30 | Gottfried Weidmann Meier | Differential gear for self-propelled vehicles |
JP2001074122A (en) * | 1999-09-02 | 2001-03-23 | Honda Motor Co Ltd | Differential device |
CN1269664C (en) * | 1999-09-02 | 2006-08-16 | 本田技研工业株式会社 | Saddle-type vehicle carrying with differential limiting device |
US20080188341A1 (en) * | 2007-02-06 | 2008-08-07 | Gm Global Technology Operations, Inc. | Cycloid limited slip differential and method |
DE102008061191A1 (en) * | 2008-12-09 | 2010-06-10 | Schaeffler Kg | Differential gear e.g. roller bearing differential gear, for transmission of drive torque to front and rear wheels of all-wheel-driven vehicle, has paths formed in drive gears with gradient wave-shaped in radial direction of rotation axis |
CN105257802A (en) * | 2015-11-04 | 2016-01-20 | 四川大学 | Internal gear driven type pure rolling automobile differential mechanism with random tooth difference |
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