CN112610669A - Reduction gearbox for new energy electric drive bridge - Google Patents
Reduction gearbox for new energy electric drive bridge Download PDFInfo
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- CN112610669A CN112610669A CN202011484463.1A CN202011484463A CN112610669A CN 112610669 A CN112610669 A CN 112610669A CN 202011484463 A CN202011484463 A CN 202011484463A CN 112610669 A CN112610669 A CN 112610669A
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- shaft
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- input
- output shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
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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
- F16H37/04—Combinations of toothed gearings only
- F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
The invention provides a reduction gearbox for a new energy electric drive axle, which increases torque and reduces speed through the combination of a motor and an integrated reduction gearbox, integrates an axle integrated framework, reduces cost and reduces the fault rate of parts of a traditional power system. The transmission device comprises a front shell and a rear end cover, wherein the rear end cover is covered on the front shell to form a reduction gearbox cavity, an input shaft, an intermediate shaft and an output shaft are arranged in the reduction gearbox cavity, the input shaft, the intermediate shaft and the output shaft are supported in corresponding bearing cavities through corresponding bearings respectively, the input shaft, the intermediate shaft and the output shaft are arranged in parallel respectively, a driving tooth is fixedly sleeved on the input shaft, an intermediate transmission input tooth and an intermediate transmission output tooth are sleeved on the intermediate shaft, an output shaft transmission tooth and an output shaft output tooth are sleeved on the output shaft, the intermediate transmission input tooth is meshed with the driving tooth, and the intermediate transmission output tooth is meshed with the output shaft transmission tooth.
Description
Technical Field
The invention relates to the technical field of reduction gearbox structures, in particular to a reduction gearbox for a new energy electric drive axle.
Background
The power system of the traditional fuel logistics vehicle comprises an engine, a gearbox, a transmission shaft, a rear axle, a half shaft and wheels. The comfort, dynamic performance and economic performance indexes of the vehicle are difficult to improve, and the requirements of the current urban logistics vehicle on energy conservation and emission reduction are difficult to meet.
Disclosure of Invention
Aiming at the problems, the invention provides a reduction gearbox for a new energy electric drive axle, which increases torque and reduces speed through the combination of a motor and an integrated reduction gearbox, integrates an integrated bridge framework, reduces cost and reduces the fault rate of parts of a traditional power system.
A new forms of energy are reducing gear box for electric drive axle which characterized in that: the transmission device comprises a front shell and a rear end cover, wherein the rear end cover is covered on the front shell to form a reduction box cavity, an input shaft, an intermediate shaft and an output shaft are arranged in the reduction box cavity, main reduction gears of the input shaft, the intermediate shaft, the output shaft and an integrated differential are supported in corresponding bearing cavities through corresponding bearings respectively, the input shaft, the intermediate shaft and the output shaft are arranged in parallel respectively, a driving tooth is fixedly sleeved on the input shaft, an intermediate transmission input tooth and an intermediate transmission output tooth are sleeved on the intermediate shaft, an output shaft transmission tooth and an output shaft output tooth are sleeved on the output shaft, the intermediate transmission input tooth is meshed and connected with the driving tooth, the intermediate transmission output tooth is meshed and connected with the output shaft transmission tooth, an output gap is reserved at the position of the rear end cover corresponding to the output tooth of the output shaft, and a raised differential shell is integrated at the position of one end of the front shell and the rear end cover corresponding, the differential mechanism is characterized in that a main rotating shaft is arranged between two end plates of the differential mechanism shell through a differential mechanism bearing, a differential cavity is arranged in the center position of the main rotating shaft, planetary bevel gears and two-side sun bevel gears are arranged in the differential cavity, each sun bevel gear is connected with a corresponding transmission key shaft, a hollow insertion hole is formed in the main rotating shaft corresponding to the input side of the transmission key shaft, an input gear is fixedly connected to the main rotating shaft, penetrates through the output gap and is connected with the output teeth of the output shaft in a meshing mode, one end of an intermediate shaft protrudes out of the rear end cover and is fixedly sleeved with a parking flange plate, and a parking brake assembly is assembled on the periphery of the parking flange.
It is further characterized in that:
the input shaft is supported and arranged through a corresponding input shaft bearing, the intermediate shaft is supported and arranged through an intermediate shaft bearing, and the output shaft is supported and arranged through an output shaft bearing;
the differential cavity is connected to the main rotating shaft through a plurality of connecting rods, planetary bevel gears are fixedly mounted on the connecting rods respectively, the planetary bevel gears are meshed with sun bevel gears on two sides, and a corresponding avoiding structure is arranged at the central position of each connecting rod to ensure that the structure is assembled smoothly;
the corresponding wheel half shafts are arranged parallel to the input shaft.
After the integrated type speed reduction gearbox is adopted, the parking brake is integrated on the convex part of the intermediate shaft of the speed reduction gearbox, and the output gear of the output shaft of the speed reduction gearbox is directly meshed with the input gear of the main rotating shaft connected with the differential mechanism, so that the differential mechanism is integrated in the speed reduction gearbox, the torque is increased and the speed is reduced through the combination of the motor and the integrated type speed reduction gearbox, the integrated bridge is integrated, the cost is reduced, and meanwhile, the fault rate of parts of the traditional power system is reduced.
Drawings
FIG. 1 is a front view cross-sectional structural schematic of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
the parking brake comprises a front shell 1, a rear end cover 2, a reduction gearbox cavity 3, an input shaft 4, an intermediate shaft 5, an output shaft 6, driving teeth 7, intermediate transmission input teeth 8, intermediate transmission output teeth 9, output shaft transmission teeth 10, output shaft output teeth 11, an output notch 12, a differential shell 13, an end plate 14, a differential bearing 15, a main rotating shaft 16, a differential cavity 17, a planetary bevel gear 18, a sun bevel gear 19, a transmission key shaft 20, a hollow insertion hole 21, an input gear 22, a parking flange plate 23, a parking brake assembly 24, an input shaft bearing 25, an intermediate shaft bearing 26, an output shaft bearing 27 and a connecting rod 28.
Detailed Description
A new forms of energy are reducing gear box for electric drive axle, see figure 1: the transmission device comprises a front shell 1 and a rear end cover 2, wherein the rear end cover 2 is covered on the front shell 1 to form a reduction gearbox cavity 3, an input shaft 4, an intermediate shaft 5 and an output shaft 6 are distributed in the reduction gearbox cavity 3, the input shaft 4, the intermediate shaft 5 and the output shaft 6 are respectively supported in corresponding bearing cavities through corresponding bearings, the input shaft 4, the intermediate shaft 5 and the output shaft 6 are respectively arranged in parallel, a driving tooth 7 is fixedly sleeved on the input shaft 4, an intermediate transmission input tooth 8 and an intermediate transmission output tooth 9 are sleeved on the intermediate shaft 5, an output shaft transmission tooth 10 and an output shaft output tooth 11 are sleeved on the output shaft 6, the intermediate transmission input tooth 8 is meshed with the driving tooth 7, the intermediate transmission output tooth 9 is meshed with the output shaft transmission tooth 10, an output gap 12 is reserved at the position of the rear end cover 2 corresponding to the output shaft output tooth 11, and a raised differential shell 13 is integrated at the position of one end of the front shell 1, a main rotating shaft 16 is arranged between two end plates 14 of the differential shell 13 through a differential bearing 15, a differential cavity 17 is arranged in the center position of the main rotating shaft 16, planetary bevel gears 18 and two side sun bevel gears 19 are arranged in the differential cavity 17, each sun bevel gear 19 is connected with a corresponding transmission key shaft 20, a hollow insertion hole 21 is formed in the input side of the main rotating shaft 16 corresponding to the transmission key shafts 20, an input gear 22 is fixedly connected to the main rotating shaft 16, the input gear 22 penetrates through the output gap 12 and then is in meshing connection with the output gear 11 of the output shaft, a parking flange 23 is fixedly sleeved on one end of the intermediate shaft 5 after protruding out of the rear end cover, and a parking brake assembly 24 is assembled on the periphery of the parking.
The input shaft 4 is supported by a corresponding input shaft bearing 25, the intermediate shaft 5 is supported by an intermediate shaft bearing 26, and the output shaft 6 is supported by an output shaft bearing 27;
the differential cavity 17 is connected with the main rotating shaft 16 through a plurality of connecting rods 28, the connecting rods 28 are respectively and fixedly provided with a planetary bevel gear 18, the planetary bevel gear 18 is meshed with sun bevel gears 19 on two sides, and the central position of the connecting rod 28 is provided with a corresponding avoiding structure to ensure the smooth assembly of the structure;
the corresponding wheel axle shaft is arranged parallel to the input shaft 4.
The transmission path of the invention patent is as follows:
when the vehicle is in forward gear and reverse: drive motor → input shaft → intermediate shaft → output shaft → differential;
parking: wheel → half shaft → differential → output shaft → intermediate shaft → parking flange-rear end cover of the gearbox housing.
After the parallel shaft type speed reduction box for the bridge is adopted, the parallel shaft type speed reduction box for the bridge is integrated with the parking brake, so that the integral fault of the speed changing box is greatly reduced, and the reliability of the speed changing box is improved; the transmission gear adopts a thin and high tooth design, so that the contact ratio of a gear pair is increased and averaged, macroscopic and microscopic parameters of the gear are optimized, the transmission error is reduced, contact spots are optimized, the strength of the gear is greatly improved, and the meshing noise is reduced; the supporting bearing part adopts a roller bearing design, so that the noise is reduced, and the reliability of the supporting bearing is greatly improved; the shell cover piece is designed in an all-aluminum alloy finite element topology optimization mode, and fatigue checking is carried out through a load spectrum of 40 kilometers; the weight of a transmission assembly is greatly reduced, and the torque-mass ratio is increased; the cleanliness of the assembly is limited to 300mg, the backup coefficient of the static torsional strength of the assembly is more than 3.0, and the average comprehensive transmission efficiency of the assembly is more than 95%.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A new forms of energy are reducing gear box for electric drive axle which characterized in that: the transmission device comprises a front shell and a rear end cover, wherein the rear end cover is covered on the front shell to form a reduction box cavity, an input shaft, an intermediate shaft and an output shaft are arranged in the reduction box cavity, main reduction gears of the input shaft, the intermediate shaft, the output shaft and an integrated differential are supported in corresponding bearing cavities through corresponding bearings respectively, the input shaft, the intermediate shaft and the output shaft are arranged in parallel respectively, a driving tooth is fixedly sleeved on the input shaft, an intermediate transmission input tooth and an intermediate transmission output tooth are sleeved on the intermediate shaft, an output shaft transmission tooth and an output shaft output tooth are sleeved on the output shaft, the intermediate transmission input tooth is meshed and connected with the driving tooth, the intermediate transmission output tooth is meshed and connected with the output shaft transmission tooth, an output gap is reserved at the position of the rear end cover corresponding to the output tooth of the output shaft, and a raised differential shell is integrated at the position of one end of the front shell and the rear end cover corresponding, the differential mechanism is characterized in that a main rotating shaft is arranged between two end plates of the differential mechanism shell through a differential mechanism bearing, a differential cavity is arranged in the center position of the main rotating shaft, planetary bevel gears and two-side sun bevel gears are arranged in the differential cavity, each sun bevel gear is connected with a corresponding transmission key shaft, a hollow insertion hole is formed in the main rotating shaft corresponding to the input side of the transmission key shaft, an input gear is fixedly connected to the main rotating shaft, penetrates through the output gap and is connected with the output teeth of the output shaft in a meshing mode, one end of an intermediate shaft protrudes out of the rear end cover and is fixedly sleeved with a parking flange plate, and a parking brake assembly is assembled on the periphery of the parking flange.
2. The reduction gearbox for the new energy electric drive axle according to claim 1, characterized in that: the input shaft is supported and arranged through a corresponding input shaft bearing, the intermediate shaft is supported and arranged through an intermediate shaft bearing, and the output shaft is supported and arranged through an output shaft bearing.
3. The reduction gearbox for the new energy electric drive axle according to claim 1, characterized in that: the differential cavity is connected with the main rotating shaft through a plurality of connecting rods, the connecting rods are respectively and fixedly provided with a planetary bevel gear, the planetary bevel gears are meshed with sun bevel gears on two sides, and the central positions of the connecting rods are provided with corresponding avoiding structures.
4. The reduction gearbox for the new energy electric drive axle according to claim 1, characterized in that: the corresponding wheel half shafts are arranged parallel to the input shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484463.1A CN112610669A (en) | 2020-12-16 | 2020-12-16 | Reduction gearbox for new energy electric drive bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484463.1A CN112610669A (en) | 2020-12-16 | 2020-12-16 | Reduction gearbox for new energy electric drive bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610669A true CN112610669A (en) | 2021-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011484463.1A Pending CN112610669A (en) | 2020-12-16 | 2020-12-16 | Reduction gearbox for new energy electric drive bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112610669A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5183138A (en) * | 1992-01-23 | 1993-02-02 | Tecumseh Products Company | Transmission parking brake |
| DE10235405A1 (en) * | 2002-08-02 | 2004-02-12 | Bayerische Motoren Werke Ag | Transmission for location in rear axle area of motor vehicle has contrate gear drive at entry to gear box, and gear box output coupled to differential |
| CN105240497A (en) * | 2015-10-21 | 2016-01-13 | 安徽星瑞齿轮传动有限公司 | Automobile transmission |
| CN109372977A (en) * | 2018-12-05 | 2019-02-22 | 苏州绿控传动科技股份有限公司 | Electricity drives bridge list speed variable device |
| CN110356223A (en) * | 2019-07-16 | 2019-10-22 | 宁德时代电动科技有限公司 | The commercial automobile-used driving axis of new energy |
| CN211009826U (en) * | 2019-12-02 | 2020-07-14 | 浙江中柴机器有限公司 | Reduction gearbox with parking brake |
-
2020
- 2020-12-16 CN CN202011484463.1A patent/CN112610669A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5183138A (en) * | 1992-01-23 | 1993-02-02 | Tecumseh Products Company | Transmission parking brake |
| DE10235405A1 (en) * | 2002-08-02 | 2004-02-12 | Bayerische Motoren Werke Ag | Transmission for location in rear axle area of motor vehicle has contrate gear drive at entry to gear box, and gear box output coupled to differential |
| CN105240497A (en) * | 2015-10-21 | 2016-01-13 | 安徽星瑞齿轮传动有限公司 | Automobile transmission |
| CN109372977A (en) * | 2018-12-05 | 2019-02-22 | 苏州绿控传动科技股份有限公司 | Electricity drives bridge list speed variable device |
| CN110356223A (en) * | 2019-07-16 | 2019-10-22 | 宁德时代电动科技有限公司 | The commercial automobile-used driving axis of new energy |
| CN211009826U (en) * | 2019-12-02 | 2020-07-14 | 浙江中柴机器有限公司 | Reduction gearbox with parking brake |
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