CN109404507B - Main reducer assembly of intermediate axle - Google Patents
Main reducer assembly of intermediate axle Download PDFInfo
- Publication number
- CN109404507B CN109404507B CN201710701852.7A CN201710701852A CN109404507B CN 109404507 B CN109404507 B CN 109404507B CN 201710701852 A CN201710701852 A CN 201710701852A CN 109404507 B CN109404507 B CN 109404507B
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- shaft
- inter
- axle
- half shaft
- bevel gear
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Classifications
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/10—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Gear Transmission (AREA)
Abstract
The invention provides a main speed reducer assembly of a middle axle, which comprises a front power input end, an inter-axle differential mechanism, a main speed reducer shell of the middle axle, an inter-wheel differential mechanism, a left driving half shaft and a right driving half shaft, wherein the front power input end is in transmission connection with the inter-axle differential mechanism, and the technical core improvement is that: a bridge frame sliding control device is arranged in the inter-bridge differential mechanism; the left slip control assembly and the right slip control assembly are arranged on two sides of the differential mechanism between the wheels. The invention reasonably distributes left and right driving forces through reasonable transmission arrangement of rear output of the inter-axle differential mechanism, does not influence steering performance, and ensures that torque between a middle axle and a rear axle is automatically distributed according to requirements (the effect of a bridge sliding control device) so as to achieve the aim of sliding control; the torque between the wheels of the middle bridge is automatically distributed according to the requirement (the functions of the slip control assembly and the right slip control assembly), so as to achieve the purpose of slip control.
Description
Technical Field
The invention relates to a middle axle main speed reducer assembly of an automobile.
Background
The prior automobile intermediate axle main speed reducer assembly comprises a power input end, a main speed reducer, an intermediate axle main speed reducer shell, a main speed reducer arranged in an axle housing of a driving intermediate axle, an inter-axle differential, and an inter-axle differential, wherein a torque input shaft drives the main speed reducer and the main speed reducer to drive the inter-axle differential, a half shaft of the inter-axle differential inputs torque into a rear axle through an output shaft, the other half shaft drives the inter-axle differential, and the torque is divided into two sides to drive half shafts to drive left and right wheels. The speed reducer assembly can not realize automatic distribution of torque of left and right wheels according to the needs, can not achieve the aim of preventing skid between wheels, and can not achieve the aim of automatic distribution and skid control of torque between front and rear axles according to the needs; in addition, a half shaft of the inter-axle differential mechanism inputs torque into the rear axle through an output shaft, the output shaft and the inter-wheel differential mechanism are required to be staggered, and the space arrangement size is large.
Disclosure of Invention
In order to enable the torque force of the left wheel and the right wheel to be distributed according to the requirement, and the torque force between the middle axle and the rear axle to be automatically distributed according to the requirement, the aim of controlling the sliding is achieved, and the defect of large space arrangement size is overcome.
For this purpose, the technical scheme of the invention is as follows: the intermediate axle main speed reducer assembly comprises a front power input end, an inter-axle differential, a main speed reducer, an intermediate axle main speed reducer shell, an inter-wheel differential, a left driving half shaft and a right driving half shaft, wherein the front power input end is in transmission connection with the inter-axle differential, the left driving half shaft and the right driving half shaft are arranged in the intermediate axle main speed reducer shell, and the left driving half shaft and the right driving half shaft are respectively and fixedly connected with a left bevel gear spline and a right bevel gear spline of the inter-wheel differential;
the method is characterized in that: an output solid half shaft of the inter-axle differential is in transmission connection with a main speed reducer, and the main speed reducer is in transmission connection with a shell of the inter-wheel differential; the other output hollow half shaft of the inter-axle differential mechanism is connected with the transmission through a driving bevel gear the two transition intermediate wheels are connected with the bevel gear of the rear output shaft in a transmission way, the bevel gear of the rear output shaft is supported on the main speed reducer shell of the middle axle in a rolling manner, and the bevel gear of the rear output shaft is the power output end of the rear axle; the two transition intermediate wheels are respectively sleeved on the left driving half shaft and the right driving half shaft in a hollow mode;
a bridge frame sliding control device is arranged in the inter-bridge differential mechanism;
the bridge frame sliding control device has the structure that: a planet carrier is fixedly arranged on the output hollow half shaft, a plurality of double-layer tower gears are uniformly distributed on the planet carrier along the circumferential direction and sleeved with a plurality of double-layer tower gears through pin shafts, a first sliding control bevel gear is sleeved on the output solid half shaft, an output solid half shaft spline at the rear end of the first sliding control bevel gear is connected with a sliding sleeve in a sliding manner, unidirectional engaging teeth are arranged between the sliding sleeve and the rear end of the first sliding control bevel gear, a reset spring is arranged at the rear end of the sliding sleeve, and the first sliding control bevel gear is meshed with inner layer teeth of the double-layer tower gears; a second slip control bevel gear is fixed on a cross shaft of the inter-axle differential mechanism and is meshed with outer layer teeth of the double-layer tower gear;
realizing occlusion or separation of unidirectional occlusion teeth between the sliding sleeve and the first sliding control bevel gear, and realizing sliding control of the bridge frame;
the left control slip assembly and the right control slip assembly are structurally symmetrical and respectively comprise a torsion adjusting driving gear, a hollow shaft, an air cylinder, a intermediate wheel, a torsion adjusting shaft gear and a torsion adjusting driving gear which are fixedly connected with a shell of the differential between the wheels; the torsion-adjusting driven gear is meshed with the torsion-adjusting driving gear, the torque-adjusting driven gear is fixedly connected with the power input end of the hollow shaft into a whole through a spline, and the air cylinder is positioned at the outer side of the hollow shaft; the end face of the hollow shaft, which corresponds to the air cylinder, is provided with an occlusion tooth, the power output end of the air cylinder is correspondingly provided with an occlusion tooth, and the intermediate wheel is sleeved on the outer circle of the power output end of the air cylinder and meshed with the torsion-adjusting wheel shaft gear; the torsion adjusting shaft gear is fixedly connected with the left half shaft or the right half shaft into a whole through a spline.
The beneficial effects are that: the invention reasonably distributes left and right driving forces through reasonable transmission arrangement of the rear output of the inter-axle differential mechanism, does not influence steering performance, ensures that torque between the middle axle and the rear axle is automatically distributed as required, and achieves the aim of controlling sliding; the torque between the wheels of the middle bridge is automatically distributed according to the requirement, so that the aim of controlling the sliding is fulfilled; and the spatial arrangement of the invention is significantly reduced in size.
Drawings
Fig. 1 is a front view in cross section of the structure of the present invention.
1, an inter-axle differential is shown in the figure; 2. a main speed reducer; 3. an inter-wheel differential; 4. a right driving half shaft; 5. a rear output shaft bevel gear; 6. A left driving half shaft; 7. a transition intermediate wheel; 8. a drive bevel gear; 9. a front power input; 10. a main reducer housing of the intermediate axle; 11. left control slide assembly; 12. a right control slide assembly; 13. and the bridge frame sliding control device.
Detailed Description
The intermediate axle main speed reducer assembly shown in fig. 1 comprises a front power input end 9, an inter-axle differential 1, a main speed reducer 2, an intermediate axle main speed reducer housing 10 and an inter-wheel differential 3, a left driving half shaft 6 and a right driving half shaft 4, wherein the front power input end 9 is in transmission connection with the inter-axle differential 1, the left driving half shaft 6 and the right driving half shaft 4 are arranged in the intermediate axle main speed reducer housing 10, and the left driving half shaft 6 and the right driving half shaft 4 are respectively and fixedly connected with left bevel gear splines and right bevel gear splines of the inter-wheel differential 3; one output solid half shaft of the inter-axle differential mechanism 1 is in transmission connection with the main speed reducer 2, and the main speed reducer 2 is in transmission connection with the shell of the inter-wheel differential mechanism 3; the other output hollow half shaft of the inter-axle differential 1 is in transmission connection with a rear output shaft bevel gear 5 through a drive bevel gear 8 and two transition intermediate gears 7, the rear output shaft bevel gear 5 is supported on the intermediate axle main speed reducer shell 10 in a rolling manner, and the rear output shaft bevel gear 5 is the most rear axle power output end; the two transition intermediate wheels 7 are respectively sleeved on the left driving half shaft 6 and the right driving half shaft 4 in a hollow mode;
a bridge sliding control device 13 is arranged in the inter-bridge differential mechanism;
the structure of the bridge frame sliding control device 13: a planet carrier 13-1 is fixedly arranged on the output hollow half shaft, a plurality of double-layer tower gears 13-2 are uniformly distributed on the planet carrier along the circumferential direction and sleeved with a first sliding control bevel gear 13-3 along the circumferential direction, a sliding sleeve 13-4 is slidably connected with an output solid half shaft spline at the rear end of the first sliding control bevel gear, unidirectional engaging teeth are arranged between the sliding sleeve 13-4 and the rear end of the first sliding control bevel gear 13-3, a reset spring 13-6 is arranged at the rear end of the sliding sleeve, and the first sliding control bevel gear 13-3 is meshed with inner layer teeth of the double-layer tower gear 13-2; a second slip control bevel gear 13-5 is fixed on a cross shaft of the inter-axle differential mechanism 1, and the second slip control bevel gear 13-5 is meshed with outer layer teeth of the double-layer tower gear 13-2; realizing occlusion or separation of unidirectional occlusion teeth between the sliding sleeve and the first sliding control bevel gear, and realizing sliding control of the bridge frame;
the left control slide assembly and the right control slide assembly are symmetrical in structure and respectively comprise a torsion adjusting driving gear, a hollow shaft, a cylinder, a medium wheel, a torsion adjusting shaft gear and a casing of the differential mechanism between the wheels; the torque adjusting driven gear is meshed with the torque adjusting driving gear, the torque adjusting driven gear is fixedly connected with the power input end of the hollow shaft into a whole through a spline, and the air cylinder is positioned on the outer side of the hollow shaft; the end face of the hollow shaft, which corresponds to the air cylinder, is provided with an occlusion tooth, the power output end of the air cylinder is correspondingly provided with an occlusion tooth, and the intermediate wheel is sleeved on the outer circle of the power output end of the air cylinder and meshed with the torsion-adjusting wheel shaft gear; the torsion adjusting shaft gear is fixedly connected with the left half shaft or the right half shaft into a whole through a spline.
The left and right control assemblies are identical to the left and right drive torque adjusters disclosed in CN104786834a, and are not described in detail herein.
Claims (1)
1. The intermediate axle main speed reducer assembly comprises a front power input end, an inter-axle differential, a main speed reducer, an intermediate axle main speed reducer shell, an inter-wheel differential, a left driving half shaft and a right driving half shaft, wherein the front power input end is in transmission connection with the inter-axle differential, the left driving half shaft and the right driving half shaft are arranged in the intermediate axle main speed reducer shell, and the left driving half shaft and the right driving half shaft are respectively and fixedly connected with a left bevel gear spline and a right bevel gear spline of the inter-wheel differential;
the method is characterized in that: an output solid half shaft of the inter-axle differential is in transmission connection with a main speed reducer, and the main speed reducer is in transmission connection with a shell of the inter-wheel differential; the other output hollow half shaft of the inter-axle differential mechanism is in transmission connection with a rear output shaft bevel gear through a drive bevel gear and two transition intermediate gears, the rear output shaft bevel gear is supported on a main speed reducer shell of the intermediate axle in a rolling way, and the rear output shaft bevel gear is a rear axle power output end; the two transition intermediate wheels are respectively sleeved on the left driving half shaft and the right driving half shaft in a hollow mode;
a bridge frame sliding control device is arranged in the inter-bridge differential mechanism;
the bridge frame sliding control device has the structure that: a planet carrier is fixedly arranged on the output hollow half shaft, a plurality of double-layer tower gears are uniformly distributed on the planet carrier along the circumferential direction and sleeved with a plurality of double-layer tower gears through pin shafts, a first slip control bevel gear is sleeved on the output solid half shaft, the output solid half shaft spline at the rear end of the first slip control bevel gear is in sliding connection with a sliding sleeve, unidirectional occlusion teeth are arranged between the sliding sleeve and the rear end of the first slip control bevel gear, a reset spring is arranged at the rear end of the sliding sleeve, and the first slip control bevel gear is always meshed with the inner layer teeth of the double-layer tower gear; a second slip control bevel gear is fixed on a cross shaft of the inter-axle differential mechanism and is meshed with outer layer teeth of the double-layer tower gear;
realizing occlusion or separation of unidirectional occlusion teeth between the sliding sleeve and the first sliding control bevel gear, and realizing sliding control of the bridge frame;
the left control slip assembly and the right control slip assembly are structurally symmetrical and respectively comprise a torsion adjusting driving gear, a hollow shaft, a cylinder, a intermediate wheel and a torsion adjusting shaft gear, and the torsion adjusting driving gear is fixedly connected with a shell of the differential between the wheels; the torque adjusting driven gear is meshed with the torque adjusting driving gear, the torque adjusting driven gear is fixedly connected with the power input end of the hollow shaft into a whole through a spline, and the air cylinder is positioned on the outer side of the hollow shaft; the end face of the hollow shaft, which corresponds to the air cylinder, is provided with an occlusion tooth, the power output end of the air cylinder is correspondingly provided with an occlusion tooth, and the intermediate wheel is sleeved on the outer circle of the power output end of the air cylinder and meshed with the torsion-adjusting wheel shaft gear; the torsion adjusting shaft gear is fixedly connected with the left driving half shaft or the right driving half shaft into a whole through a spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701852.7A CN109404507B (en) | 2017-08-16 | 2017-08-16 | Main reducer assembly of intermediate axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701852.7A CN109404507B (en) | 2017-08-16 | 2017-08-16 | Main reducer assembly of intermediate axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109404507A CN109404507A (en) | 2019-03-01 |
| CN109404507B true CN109404507B (en) | 2024-04-16 |
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ID=65454502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710701852.7A Active CN109404507B (en) | 2017-08-16 | 2017-08-16 | Main reducer assembly of intermediate axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404507B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792749B (en) * | 2019-10-29 | 2023-01-17 | 一汽解放汽车有限公司 | Intermediate axle main reducer assembly with through shaft clutch device |
| CN111929058B (en) * | 2020-07-02 | 2022-07-22 | 中国第一汽车股份有限公司 | Static torsion test device and method for through bridge driving cylindrical gear shaft |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB808972A (en) * | 1955-03-01 | 1959-02-18 | Piero Mariano Giri De Teramala | Improvements in mechanically propelled or mechanically driven apparatus having a hydro-kinetic torque converter and a reduction gear |
| US4848508A (en) * | 1987-10-05 | 1989-07-18 | Borg-Warner Automotive, Inc. | Method and apparatus for controlling wheel slip in a full-time four wheel drive vehicle |
| CN201784461U (en) * | 2009-06-07 | 2011-04-06 | 周殿玺 | Differential torque transmission device |
| CN207161656U (en) * | 2017-08-16 | 2018-03-30 | 十堰戎马汽车特种传动有限公司 | A kind of main reducer of middle axle assembly |
-
2017
- 2017-08-16 CN CN201710701852.7A patent/CN109404507B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB808972A (en) * | 1955-03-01 | 1959-02-18 | Piero Mariano Giri De Teramala | Improvements in mechanically propelled or mechanically driven apparatus having a hydro-kinetic torque converter and a reduction gear |
| US4848508A (en) * | 1987-10-05 | 1989-07-18 | Borg-Warner Automotive, Inc. | Method and apparatus for controlling wheel slip in a full-time four wheel drive vehicle |
| CN201784461U (en) * | 2009-06-07 | 2011-04-06 | 周殿玺 | Differential torque transmission device |
| CN207161656U (en) * | 2017-08-16 | 2018-03-30 | 十堰戎马汽车特种传动有限公司 | A kind of main reducer of middle axle assembly |
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| Publication number | Publication date |
|---|---|
| CN109404507A (en) | 2019-03-01 |
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