CN201169211Y - Rear axle assembly of four-wheel motorcycle - Google Patents
Rear axle assembly of four-wheel motorcycle Download PDFInfo
- Publication number
- CN201169211Y CN201169211Y CNU2008200977365U CN200820097736U CN201169211Y CN 201169211 Y CN201169211 Y CN 201169211Y CN U2008200977365 U CNU2008200977365 U CN U2008200977365U CN 200820097736 U CN200820097736 U CN 200820097736U CN 201169211 Y CN201169211 Y CN 201169211Y
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- wheel
- driven
- differential
- planetary
- back axle
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Abstract
The utility model relates to a rear axle assembly for a four-wheeled motorcycle, including an axle drive bevel pinion assembly, a rear axle gearbox assembly, a left and right driving shaft assembly, wherein, the axle drive bevel pinion presents an interference fit with a bearing in a rear axle gearbox; the rear axle gearbox assembly is internally provided with a planet differential mechanism assembly; the driven bevel gear of the planet differential mechanism is axially fixed at the end of a housing; the driven bevel gear is meshed with an axle drive bevel pinion; a cylindrical pin roll is fixed in the housing; a driving planet gear presents a clearance fit with the cylindrical pin roll; a driven planet gear forms a clearance fit with the axle hole arranged on the end surface of the housing, while another driven planet gear forms a clearance fit with the axle hole of the driven bevel gear; the driven planet gear is provided with a spline sleeve which is respectively connected with a left axle shaft spline and a right axle shaft spline. The rear axle assembly of the utility model can prevent vehicles from turning over at a lateral side when in redirecting, thereby effectively improving the flexibility and the safety of the vehicles when in turning.
Description
Technical field
The utility model relates to a kind of four-wheel motor cycle, is specifically related to a kind of back axle assembly of four-wheel motor cycle.
Background technology
The back axle assembly of existing four-wheel motor cycle, generally form by drive bevel gear combination, back axle gear case, the combination of left and right driving axle etc., by welding fixedly spline housing, the left and right half of left and right driving axle combination is connected with the back axle gear case by spline respectively on the driven wheel of differential in the back axle gear case.Though the back axle of said structure is combined in when muddy road face travels and can avoids skidding, vehicle is better at the muddy road surface travelling, but the left and right half of left and right driving axle combination is connected with the back axle gear case by spline respectively, the transmission of left and right driving axle combination indifferential, therefore, left and right half is rotated with unequal angular velocity in the steering procedure, make left and right trailing wheel also can only rotate with unequal angular velocity, turn on one's side easily when making Vehicular turn, safety performance is low, and the trailing wheel abrasion is serious.
Summary of the invention
The purpose of this utility model is, a kind of back axle assembly of four-wheel motor cycle is provided, and it can prevent that vehicle from turning on one's side alerting ability when effectively improving Vehicular turn and safety when turning to.
The purpose of this utility model is achieved in that and comprises the drive bevel gear combination, the back axle gear box combination, a left side, the right driving axle combination, drive bevel gear in the drive bevel gear combination and the bearing interference fit in the back axle gear box combination, be provided with the planetary differential combination in the back axle gear box combination, the combination of this planetary differential comprise with the back axle gear case in the shell of bearing interference fit, driven wheel of differential, straight pin, be symmetricly set in two active planetary wheels on the straight pin, respectively with two driven planetary wheels of two active planetary wheel ingears, described driven wheel of differential is axially fixed at the end of shell, drive bevel gear engagement in driven wheel of differential and the drive bevel gear combination, straight pin is axially fixed in the shell, active planetary wheel and straight pin free-running fit, the axis hole free-running fit that driven planetary wheel and shell end face are provided with, the axis hole free-running fit of another driven planetary wheel and driven wheel of differential, driven planetary wheel is provided with spline housing, the axis hole that the left half axle of left driving shaft combination passes shell inserts spline connection in the driven planetary spline housing, and the axis hole that the right axle shaft of right driving axle combination passes driven wheel of differential inserts spline connection in the driven planetary spline housing.
Adopted such scheme, be provided with the planetary differential combination in the back axle gear box combination, driven wheel of differential is axially fixed at the end of shell, driven wheel of differential and drive bevel gear engagement, when engine operation, the power of its output is passed to the driven wheel of differential that planetary differential makes up through transmission shaft, drive bevel gear, drives the planetary differential work in combination.Straight pin is axially fixed in the shell, active planetary wheel and straight pin free-running fit, and the power of driven wheel of differential is passed to initiatively planetary wheel through shell and straight pin.The axis hole free-running fit that driven planetary wheel and shell end face are provided with, the axis hole free-running fit of another driven planetary wheel and driven wheel of differential, driven planetary wheel is provided with spline housing, is connected with the left and right half spline respectively.Adopt said structure, when travelling on straight road surface, the driving and driven planetary wheel stress equalization of planetary differential combination, the moment of torsion of driven planetary wheel output balance drives left and right half and is rotated with same rotational speed.When Vehicular turn, the planetary wheel of planetary differential combination is subjected to the application force of different sizes when turning to, cause two driven planetary wheels to realize that differential rotates with different rotating speeds, drive left and right half with different rotating speed rotations, make the drive shaft speed of outside tire greater than the inside tire drive shaft speed, cause turning to of vehicle more flexible, avoid the Vehicular turn difficulty, and the situation that rollover takes place when turning to.
The utility model also has compact conformation except that having above-mentioned advantage, safe, and the road surface comformability is strong, the advantage that driveability is good.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is an assembly structure figure of the present utility model;
Fig. 2 is the structural representation of the planetary differential in the utility model;
Fig. 3 is the structural representation of the back axle gear case in the utility model;
Fig. 4 is the structural representation of the drive bevel gear combination in the utility model;
Fig. 5 is the structural representation of the left driving shaft combination in the utility model;
Fig. 6 is the structural representation of the right driving axle combination in the utility model;
In the accompanying drawing, 1 is left half axle, and 2 is oil sealing, 3 is the back axle casing, and 4 is bearing, and 5 is shell, 5a is an axis hole, and 6 is locating dowel pin, and 7 is straight pin, 8 is the active planetary wheel, and 9 is driven planetary wheel, and 10 is the back axle case lid, 11 is bolt, and 12 is bearing, and 13 is driven wheel of differential, 13a is an axis hole, and 14 is bolt, and 15 is right axle shaft, 16 is oil sealing, 17,20 is bearing, and 18 is drive bevel gear, 19 is the back axle case lid, and 21 is " O " shape seal ring, and 22 is initiative taper tooth permanent seat, 23 is oil sealing, and 24 is the back axle coupler, and 25 is packing ring, 26 is jam nut, and 27 is bolt, and 29 is nut.
The specific embodiment
Referring to figs. 1 through Fig. 6, the back axle assembly of four-wheel motor cycle of the present utility model, the drive bevel gear combination comprises initiative taper tooth permanent seat 22, drive bevel gear 18, back axle coupler 24.Be provided with " O " shape seal ring 21 in the circular groove of initiative taper tooth permanent seat 22 outer walls, bearing 20 interference fit are in the cavity of initiative taper tooth permanent seat 22, the lower end of bearing 20 relies on the bottom surface of cavity spacing, and its upper end is spacing by the nut 29 that is threadedly connected in the cavity.Back axle coupler 24 and initiative taper tooth permanent seat 22 free-running fits are provided with the oil sealing 23 that is used for sealing lubricating oil between initiative taper tooth permanent seat 22 and the back axle coupler 24.Drive bevel gear 18 and bearing 20 interference fit, drive bevel gear 18 1 ends pass nut 29, bearing 20 inserts back axle coupler 20, circumferentially fixing by interior male splines and back axle coupler 24, the end that drive bevel gear 18 is inserted in the back axle coupler is threaded with jam nut 26, with the axial locking of drive bevel gear 18, be provided with packing ring 25 between jam nut 26 and the drive bevel gear 18; Back axle coupler 24 other ends connect transmission shaft.Drive bevel gear 18 in the drive bevel gear combination and bearing 17 interference fit in the back axle gear case, the drive bevel gear combination comprises that back axle casing 3, interference are equipped with the back axle case lid 19 of bearing 12, " O " shape seal ring 10 is enclosed within the circular groove of back axle case lid 19 outer walls, and back axle casing 3 is captiveed joint by bolt 11 with back axle case lid 19.Back axle casing 3 is provided with stepped hole, this stepped hole small end interference is equipped with bearing 4, the big end interference of stepped hole is equipped with oil sealing 2, back axle casing 3 tops are provided with the via hole 3a that inserts for drive bevel gear 18, be provided with bearing 17 in the back axle casing, this bearing is positioned at the below of described via hole, and bearing 17 is a needle bearing.Back axle casing 3 is captiveed joint with initiative taper tooth permanent seat 22 by bolt 27.Interference fit has oil sealing 16 on the back axle case lid 19.Be provided with planetary differential combination in the back axle gear box combination, this planetary differential combination comprise with the back axle gear case in the bearing interference fit shell 5, driven wheel of differential 13, straight pin 7, be symmetricly set on the straight pin two initiatively planetary wheels 8, respectively with two two driven planetary wheels 9 of planetary wheel ingear initiatively.The two ends of the shell 5 of planetary differential respectively with the back axle gear box combination in bearing 4 and bearing 12 interference fit.Driven wheel of differential 13 is axially fixed at the end of shell, and driven wheel of differential 13 is captiveed joint with shell by bolt 14.Drive bevel gear 18 engagements during driven wheel of differential 13 makes up with drive bevel gear, finishing bevel gear cuter 13 is 90 ° with the angle that drive bevel gear 18 engagements are mutually.Straight pin 7 is axially fixed in the shell, shell 5 end faces are provided with knock hole, the side face at straight pin 7 two ends is provided with through hole, after a locating dowel pin 6 inserts the knock hole of shell 5 end faces and passes the through hole of straight pin side face, interference fit is in the knock hole of described shell 5, locating dowel pin 6 also forms interference fit with straight pin 7, and locating dowel pin 6 is an elastic positioning pin.Active planetary wheel 8 and straight pin 7 free-running fits, initiatively planetary wheel 8 is 90 ° with the angle that driven planetary wheel 9 is mutually.The axis hole 5a free-running fit that driven planetary wheel 7 and shell 5 end faces are provided with, the axis hole 13a free-running fit of another driven planetary wheel and driven wheel of differential 13. driven planetary wheel 7 is provided with spline housing, the axis hole 5a that the left half axle 1 of left driving shaft combination passes shell inserts that spline connects in the spline housing of driven planetary wheel 9, the axis hole free-running fit of left half axle 1 and shell 5; The axis hole 13a that the right axle shaft 15 of right driving axle combination passes driven wheel of differential inserts that spline connects in the spline housing of driven planetary wheel 9, the axis hole 13a free-running fit of right axle shaft 15 and driven wheel of differential 13.
When four-wheel motor cycle travels when turning to the road surface, the power of driving engine output is delivered to the planetary differential combination by transmission shaft, back axle coupler 24, drive bevel gear 18, driven wheel of differential 13 successively, power changes direction of transfer and angle by driving and driven planetary wheel in the planet differential cluster is closed, pass to the left half axle of left driving shaft combination respectively, the right axle shaft of warp and right driving axle combination finally makes left and right trailing wheel be rotated with different speed.
Claims (5)
1. the back axle assembly of a four-wheel motor cycle, comprise the drive bevel gear combination, the back axle gear box combination, a left side, the right driving axle combination, drive bevel gear in the drive bevel gear combination and the bearing interference fit in the back axle gear case, it is characterized in that: be provided with the planetary differential combination in the back axle gear box combination, the combination of this planetary differential comprise with the back axle gear box combination in the shell of bearing interference fit, driven wheel of differential, straight pin, two active planetary wheels that are symmetricly set on the straight pin mesh two driven planetary wheels respectively, described driven wheel of differential is axially fixed at the end of shell, driven wheel of differential and drive bevel gear engagement, cylindrical pin is fixed in the shell, active planetary wheel and straight pin free-running fit, the axis hole free-running fit that driven planetary wheel and shell end face are provided with, the axis hole free-running fit of another driven planetary wheel and driven wheel of differential, driven planetary wheel is provided with spline housing, respectively with a left side, the right axle shaft spline connects.
2. the back axle assembly of four-wheel motor cycle according to claim 1, it is characterized in that: described planetary differential combined housing end face is provided with knock hole, the side face at straight pin two ends is provided with through hole, after locating dowel pin inserted the knock hole of shell end face and passes the through hole of straight pin side face, interference fit was in the knock hole of described shell.
3. the back axle assembly of four-wheel motor cycle according to claim 2, it is characterized in that: described locating dowel pin is an elastic positioning pin.
4. the back axle assembly of four-wheel motor cycle according to claim 1, it is characterized in that: the angle that the active planetary wheel of described planetary differential and driven planetary wheel are mutually is 90 °.
5. the back axle assembly of four-wheel motor cycle according to claim 1, it is characterized in that: the shell of described planetary differential is captiveed joint with driven wheel of differential by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200977365U CN201169211Y (en) | 2008-02-29 | 2008-02-29 | Rear axle assembly of four-wheel motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200977365U CN201169211Y (en) | 2008-02-29 | 2008-02-29 | Rear axle assembly of four-wheel motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201169211Y true CN201169211Y (en) | 2008-12-24 |
Family
ID=40208264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200977365U Expired - Lifetime CN201169211Y (en) | 2008-02-29 | 2008-02-29 | Rear axle assembly of four-wheel motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201169211Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891738A (en) * | 2017-11-09 | 2018-04-10 | 重庆墨龙机械有限公司 | A kind of Vidacare corp for four-wheel motor cycle |
-
2008
- 2008-02-29 CN CNU2008200977365U patent/CN201169211Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891738A (en) * | 2017-11-09 | 2018-04-10 | 重庆墨龙机械有限公司 | A kind of Vidacare corp for four-wheel motor cycle |
| CN107891738B (en) * | 2017-11-09 | 2020-12-01 | 重庆墨龙机械有限公司 | Electric driving device for four-wheel motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081224 |