CN101949441A - Star-axis difference adjusting differential mechanism - Google Patents
Star-axis difference adjusting differential mechanism Download PDFInfo
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- CN101949441A CN101949441A CN2010102857444A CN201010285744A CN101949441A CN 101949441 A CN101949441 A CN 101949441A CN 2010102857444 A CN2010102857444 A CN 2010102857444A CN 201010285744 A CN201010285744 A CN 201010285744A CN 101949441 A CN101949441 A CN 101949441A
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Abstract
The invention relates to a star-axis difference adjusting differential mechanism. The two output freedom degrees of the differential mechanism are input to two planetary gear sets which are mutually locked by virtue of a planetary gear shaft, the rotative speed difference of the two output freedom degrees is adjusted by controlling the two planetary gear sets, a constant speed driving shaft and a worm (1) of the difference adjusting differential mechanism directly drive a constant speed driving worm wheel (2), and the constant speed worm wheel (2) and a differential mechanism gear carrier (3) are a whole; a differential mechanism planetary gear (4), a right axle shaft bevel gear (5) and a left axle shaft bevel gear (6) are arranged in the differential mechanism gear carrier (3), so as to form the differential mechanism. The invention can effectively control the speed difference of two rotating wheels, can realize absolutely constant speed and accurate and controllable rotative speed difference and further can realize stable linear motion and accurate steering, thus being especially applicable to driving on the rotating wheel of wheel chair.
Description
Technical field
The invention belongs to vehicle and use the differential art field, relate in particular to a kind of accent difference differential mechanism, can effectively control the speed difference of two runners, can realize complete constant speed and accurate controlled speed discrepancy, then realize stably straight line motion and turn to accurately, be applied to the driving of wheelchair class runner especially.
Background technique
The two-wheel of present similar wheelchair one class drives the double sports equipment that turns to, generally adopt double dynamical two runners that drive respectively, realize seesawing and turning to by the rotating speed of controlling two runners, but be based on the open loop control characteristic of hybrid power system, two runners can not realize well that constant speed rotates or accurately turn to, snakelike advancing often occur and turn to radius of turn is unsettled, the motion control of wheelchair kind equipment is relatively poor.
Summary of the invention
The objective of the invention is deficiency, design a kind of accent difference differential mechanism, can effectively control the speed difference of two runners, can realize complete constant speed and accurate controlled speed discrepancy, realize stably straight line motion then and turn to accurately at above-mentioned existence.Realize that the technological scheme that purpose of the present invention is taked is: two output degrees of freedom of differential mechanism are input to two groups of planetary gear set that lock mutually by row sun gear axle, then realize that by controlling two planetary gear set regulating two exports speed discrepancy freely, the constant velocity driving shaft of this accent difference differential mechanism and worm screw directly drive constant speed and drive worm gear, and constant speed driving worm gear and differential gear are as a whole; Differential pinion gear, right axle shaft umbrella gear and left half axle umbrella gear are installed in and form differential mechanism in the differential gear frame; Left half axle umbrella gear and left half axle first driving gear and left half axle transfer the difference sun wheel coaxial, and left half axle first driving gear is by being meshed and transmitted to left half axle with left half axle second driving gear, left half axle transmission shaft, left half axle the 3rd driving cog, left half axle the 4th driving cog; Right axle shaft umbrella gear and right axle shaft transfer difference sun wheel coaxial line to form right axle shaft; Left half axle transfers difference sun wheel and right axle shaft to transfer the difference sun wheel to transfer difference planet wheel and right axle shaft to transfer the engagement of difference planet wheel with left half axle respectively, left half axle transfers difference planet wheel and right axle shaft to transfer difference planet wheel common row gear rack, and left half axle transfers difference planet wheel and right axle shaft to transfer the difference planet wheel to transfer external toothing in the difference, right axle shaft to transfer in the difference and mesh in the external toothing in periphery and left half axle respectively; Left half axle is transferred the common and accent difference bevel gear outer gearing of external toothing in interior external toothing of difference and the right axle shaft accent difference; Rotating speed is transferred deviation shaft directly to drive and is transferred the difference bevel gear.
The present invention can effectively control the speed difference of two runners, can realize complete constant speed and accurate controlled speed discrepancy, realizes stably straight line motion then and turns to accurately, is applied to the driving of wheelchair class runner especially.
Description of drawings
Accompanying drawing is a theory structure schematic representation of the present invention.
Among the figure, 1, constant velocity driving shaft and worm screw, 2, constant speed drives worm gear, 3, the differential gear frame, 4, differential pinion gear, 5, the right axle shaft umbrella gear, 6, the left half axle umbrella gear, 7, right axle shaft, 8, left half axle first driving gear, 9, left half axle second driving gear, 10, the left half axle transmission shaft, 11, left half axle the 3rd driving cog, 12, left half axle the 4th driving cog, 13, left half axle, 14, axle bearing, 15, casing, 16, left half axle is transferred difference sun wheel, 17, right axle shaft is transferred difference sun wheel, 18, left half axle is transferred the difference planet wheel, 19, right axle shaft is transferred the difference planet wheel, 20, the common row gear rack, 21, left half axle is transferred external toothing in the difference, 22, right axle shaft is transferred external toothing in the difference, 23, rotating speed is transferred deviation shaft, 24, transfer the difference bevel gear.
Specific embodiments
With reference to accompanying drawing, two output degrees of freedom that the invention is characterized in differential mechanism are input to two groups of planetary gear set that lock mutually by row sun gear axle, then realize that by controlling two planetary gear set regulating two exports speed discrepancy freely, this transfers the constant velocity driving shaft of difference differential mechanism and worm screw 1 directly to drive constant speed driving worm gear 2, and constant speed driving worm gear 2 and differential gear frame 3 are as a whole; Differential pinion gear 4, right axle shaft umbrella gear 5 and left half axle umbrella gear 6 are installed in and form differential mechanism in the differential gear frame 3; Left half axle umbrella gear 6 and left half axle first driving gear 8 and left half axle transfer difference sun wheel 16 coaxial left half axle first driving gears 8 by meshing and be transferred to left half axle 13 with left half axle second driving gear 9, left half axle transmission shaft 10 and left half axle the 3rd driving cog 11 and left half axle the 4th driving cog 12; Right axle shaft umbrella gear 5 and right axle shaft transfer difference sun wheel 17 coaxial lines to form right axle shaft 7; Left half axle transfers difference sun wheel 16 and right axle shaft to transfer difference sun wheel 17 to transfer difference planet wheel 18 and right axle shaft to transfer 19 engagements of difference planet wheel with left half axle respectively, left half axle transfers difference planet wheel 18 and right axle shaft to transfer difference planet wheel 19 common row gear racks 20, and left half axle transfers difference planet wheel 18 and right axle shaft to transfer difference planet wheel 19 to transfer external toothing 21 in the difference, right axle shaft to transfer engagement in the external toothing 22 in the difference in periphery and left half axle respectively; Left half axle is transferred external toothing 22 common and accent difference bevel gear 24 outer gearings in interior external toothing 21 of difference and the right axle shaft accent difference; Rotating speed is transferred deviation shaft 23 directly to drive and is transferred difference bevel gear 24.
Working principle of the present invention is as follows:
This is transferred the difference differential mechanism to drive constant speed by constant velocity driving shaft and worm screw 1 and drives worm gear 2, driving differential gear frame 3 and planetary pinion 4, right axle shaft umbrella gear 5 and left half axle umbrella gear 6 rotates, driving power is outputed to left half axle 13 and right axle shaft 7 respectively, and wherein the rotation of left half axle 13 need be passed through left half axle first driving gear 8, left half axle second driving gear 9, left half axle transmission shaft 10, left half axle the 3rd driving cog 11 and left half axle the 4th driving cog 12 and be transferred to left half axle 13.Transfer difference sun wheel 16 and right axle shaft to transfer difference sun wheel 17 with the coaxial left half axle of left half axle 13, right axle shaft 7 respectively in the transmittance process, transfer difference planet wheel 18, right axle shaft to transfer difference planet wheel 19 to be engaged in left half axle by the left half axle of common row gear rack 20 and transfer external toothing 21 in the difference, right axle shaft to transfer external toothing 22 in the difference; The locking that left half axle transfers external toothing 21 in the difference, right axle shaft to transfer external toothing 22 modulated difference bevel gears 24 in the difference can only be static or wait oppositely speed rotation.Promptly when transferring difference bevel gear 24 static, left half axle 13 and right axle shaft 7 are subjected to the restriction of two groups of synchronous planetary gear set, can not produce speed discrepancy, can only constant speed rotate.When rotating speed is transferred deviation shaft 23 to drive to transfer difference bevel gears 24 to rotate with two groups of planetary gear set of constant speed reverse direction actuation, then with equal and opposite in direction, the rotation of switched in opposite has been added on left half axle 13 and the right axle shaft 7, has realized that difference is controlled by to transfer the left and right half differential of difference bevel gear 24 rotating speeds to rotate.Constant speed and differential drive in this differential mechanism have independence, and two kinds of driving moments and rotating speed all can not influence each other and disturb.
Work characteristics and the scope of application:
Drive to rotate by transferring poor differential mechanism constant speed to decompose constant speed, constant speed has oppositely been decomposed differential and is driven and rotate simultaneously, and constant speed and differential gearing in the differential mechanism have independence and additivity, and two kinds of driving moments and rotating speed all can not influence each other and disturb. Realized that accurately controlled constant speed is rotated distribution and differential rotates distribution. Replenish open differential and freely decomposed output driving rotation, can not decompose the characteristics of given rotating speed difference. Be applicable to that constant speed drives the mechanism that at any time adjusts speed discrepancy or phase difference simultaneously. Avoided independent two driving power equivalently not work and the unmanageable problem of difference.
Claims (1)
1. a fixed star axle is transferred the difference differential mechanism, two output degrees of freedom that it is characterized in that differential mechanism are input to two groups of planetary gear set that lock mutually by row sun gear axle, then realize that by controlling two planetary gear set regulating two exports speed discrepancy freely, the constant velocity driving shaft of this accent difference differential mechanism and worm screw (1) directly drive constant speed and drive worm gear (2), and constant speed driving worm gear (2) and differential gear frame (3) are as a whole; Differential pinion gear (4), right axle shaft umbrella gear (5) and left half axle umbrella gear (6) are installed in and form differential mechanism in the differential gear frame (3); Left half axle umbrella gear (6) and left half axle driving gear (8) and left half axle transfer difference sun wheel (16) coaxial, and left half axle driving gear (8) is by meshing and be transferred to left half axle (13) with left half axle driving gear (9), left half axle transmission shaft (10) and left half axle driving cog (11) and left half axle driving cog (12); Right axle shaft umbrella gear (5) and right axle shaft transfer difference sun wheel (17) coaxial line to form right axle shaft (7), left half axle transfers difference sun wheel (16) and right axle shaft to transfer difference sun wheel (17) to transfer difference planet wheel (18) and right axle shaft to transfer difference planet wheel (19) engagement with left half axle respectively, left half axle transfers difference planet wheel (18) and right axle shaft to transfer difference planet wheel (19) common row gear rack (20), and left half axle transfers difference planet wheel (18) and right axle shaft to transfer difference planet wheel (19) to transfer external toothing (21) in the difference, right axle shaft to transfer engagement in the external toothing (22) in the difference in periphery and left half axle respectively; Left half axle is transferred common and accent difference bevel gear (24) outer gearing of external toothing (22) in interior external toothing (21) of difference and the right axle shaft accent difference; Rotating speed is transferred deviation shaft (23) directly to drive and is transferred difference bevel gear (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010285744 CN101949441B (en) | 2010-09-19 | 2010-09-19 | Star-axis difference adjusting differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010285744 CN101949441B (en) | 2010-09-19 | 2010-09-19 | Star-axis difference adjusting differential mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101949441A true CN101949441A (en) | 2011-01-19 |
| CN101949441B CN101949441B (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010285744 Expired - Fee Related CN101949441B (en) | 2010-09-19 | 2010-09-19 | Star-axis difference adjusting differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949441B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953571A (en) * | 2018-08-22 | 2018-12-07 | 浙江海得瑞机电有限公司 | A kind of compact differential gear box structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259160Y (en) * | 1995-09-18 | 1997-08-13 | 航空工业万里机电总厂 | Electric wheelchair |
| US6145611A (en) * | 1997-12-11 | 2000-11-14 | Haddad, Sr.; Albert G. | Computerizable robotic automated bogie |
| CN2434478Y (en) * | 2000-07-16 | 2001-06-13 | 天津市海雄机电技术有限公司 | Conic gear-worm drive differential mechanism |
| CN201772037U (en) * | 2010-09-19 | 2011-03-23 | 张维国 | Difference adjustment differential of sun shaft |
-
2010
- 2010-09-19 CN CN 201010285744 patent/CN101949441B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259160Y (en) * | 1995-09-18 | 1997-08-13 | 航空工业万里机电总厂 | Electric wheelchair |
| US6145611A (en) * | 1997-12-11 | 2000-11-14 | Haddad, Sr.; Albert G. | Computerizable robotic automated bogie |
| CN2434478Y (en) * | 2000-07-16 | 2001-06-13 | 天津市海雄机电技术有限公司 | Conic gear-worm drive differential mechanism |
| CN201772037U (en) * | 2010-09-19 | 2011-03-23 | 张维国 | Difference adjustment differential of sun shaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953571A (en) * | 2018-08-22 | 2018-12-07 | 浙江海得瑞机电有限公司 | A kind of compact differential gear box structure |
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| Publication number | Publication date |
|---|---|
| CN101949441B (en) | 2013-01-02 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130919 |