CN218777413U - Electric drive bridge structure driven by single motor - Google Patents

Electric drive bridge structure driven by single motor Download PDF

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Publication number
CN218777413U
CN218777413U CN202223359210.9U CN202223359210U CN218777413U CN 218777413 U CN218777413 U CN 218777413U CN 202223359210 U CN202223359210 U CN 202223359210U CN 218777413 U CN218777413 U CN 218777413U
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China
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gear
driven
shaft
shifting
input
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徐可
邓丽华
刘树成
田鹏飞
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Jiangsu Huayong Composite Materials Co Ltd
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Jiangsu Huayong Composite Materials Co Ltd
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Abstract

There is provided an electrically driven bridge structure driven by a single motor, comprising: an input drive gear driven by a single motor; a sun gear shaft fixedly connected with the planet row and slidably connected with a first gear shifter; the intermediate shaft is sleeved outside the sun gear shaft in a relatively rotatable manner and is fixedly connected with an input driven gear and a first gear shifting driven gear, and the input driven gear is driven by the input driving gear; the second gear shifting driven gear can be sleeved outside the sun wheel shaft in a relatively rotating manner; the parallel shaft is fixedly connected with a first gear shifting driving gear and a second gear shifting driving gear, the first gear shifting driven gear is driven by the first gear shifting driving gear, and the second gear shifting driven gear is driven by the second gear shifting driving gear; the second gear shifter is arranged on the second shifting driven gear or the planet carrier of the planet row and can be selectively connected with or disconnected from the second shifting driven gear and the planet carrier; and a differential. This electric drive bridge can increase vertical space and shorten the axial and arrange the space, makes things convenient for the narrower motorcycle type of frame to arrange.

Description

Electric drive bridge structure driven by single motor
Technical Field
The utility model relates to a new energy automobile spare part field especially relates to an electrically drive bridge construction by single motor drive.
Background
New energy automobiles are more and more valued by the nation. Currently, most of the electric transaxles used or under development on the market are of single-gear or two-gear structure. The single-gear electric drive axle can reduce the complexity of the gearbox, only needs to be provided with a speed reducing mechanism, but has higher requirement on the motor, needs the motor to provide enough large torque and high rotating speed so as to adapt to the requirements of the climbing property and the high speed of a vehicle, often the size of the motor is larger, the motor and the electric control cost are higher, and the motor runs in a high-efficiency interval because no gear is adjusted, the occupation ratio of the motor is not large, and the overall efficiency of the motor is not high. The two-gear electric drive axle can improve the problem that one-gear electric drive axle brought to a great extent, and the low-speed gear disposes a big transmission speed ratio, provides sufficient power for the vehicle, and the high-speed gear disposes a little transmission speed ratio, provides sufficient speed for the vehicle, also can reduce the demand to the motor, reduces the motor size, reduces motor, automatically controlled cost. However, when the actual speed ratio is configured, in order to meet the requirements of the highest speed and the maximum climbing dynamics, the ratio between the high-gear speed ratio and the low-gear speed ratio is very large, which causes the unsmooth gear shifting of the vehicle and obvious jerking and frustration, and the working time of the vehicle under the working conditions of extremely low speed and extremely high speed is very small, so that the vehicle can have the condition that the low-gear speed is not enough and the high-gear power is not enough when the vehicle runs under most working conditions.
Therefore, there is a need to develop an electrically driven bridge structure driven by a single motor to solve one or more of the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the at least one technical problem, according to the utility model discloses an aspect provides an electrically drive bridge structure by single motor drive, its characterized in that includes:
an input driving gear driven by a single motor;
a sun gear shaft fixedly connected with the planet row and slidably connected with a first gear shifter;
the intermediate shaft is sleeved outside the sun gear shaft in a relatively rotating manner and is fixedly connected with an input driven gear and a first gear shifting driven gear, and the input driven gear is driven by an input driving gear;
the second gear shifting driven gear can be sleeved outside the sun wheel shaft in a relatively rotating manner;
the parallel shaft is fixedly connected with a first gear shifting driving gear and a second gear shifting driving gear, the first gear shifting driven gear is driven by the first gear shifting driving gear, and the second gear shifting driven gear is driven by the second gear shifting driving gear;
a second shifter provided to the second shift driven gear or the carrier of the planetary row and selectively engaging or disengaging the second shift driven gear with the carrier; and
the differential mechanism is connected with the planet carrier of the planet row through a differential mechanism shell and is provided with a first output half shaft and a second output half shaft;
the first gear shifter can be selectively jointed with an intermediate shaft or a second gear shifting driven gear, the sun gear shaft is a hollow shaft, and the first output half shaft penetrates through the sun gear shaft.
According to the utility model discloses in another aspect, the planet row includes sun gear, planet wheel, planet carrier and ring gear, and this sun gear fixed connection is in the sun gear axle, and the ring gear is connected in the box.
According to another aspect of the present invention, the sun gear shaft is arranged parallel to the parallel shaft.
According to another aspect of the present invention, an idler gear is engaged between the input drive gear and the input driven gear.
According to the utility model discloses a still another aspect, the electric bridge construction that drives by single motor still include the transmission shaft, this transmission shaft fixedly connected with the idler and drive wheel, this input driving gear meshing in this drive wheel, the idler meshes in input driven gear.
According to the utility model discloses in another aspect, first driving gear that shifts is connected with the power takeoff.
According to another aspect of the present invention, the second gear shifter is connected to the planet carrier on the first side of the planet row, and the differential case is connected to the planet carrier on the second side of the planet row.
According to another aspect of the present invention, the electric drive bridge structure has three forward gears.
The utility model discloses can obtain following one or more technological effect:
1. the four-shaft type arrangement can shorten the axial arrangement space by increasing the longitudinal space, and is convenient for the arrangement of the vehicle with a narrow frame.
2. The axial distance between the first shaft and the second shaft can be respectively adjusted, gear parameters can be more reasonably designed, structural arrangement is facilitated, and the single motor is externally arranged, so that the motor can be conveniently disassembled.
3. The double-gear shifter structure is adopted, three gear functions are achieved, the low gear is matched with a large transmission speed ratio, a large enough torque is provided for a vehicle under the working conditions of starting, escaping, climbing and the like, the high gear is matched with a small transmission speed ratio, a high enough rotating speed is provided for the vehicle under the working conditions of high speed running, idling and the like, the middle gear is matched with a transmission ratio between the low gear and the high gear, and a power requirement that the torque is high and the rotating speed is high is provided for the vehicle under the non-extreme working condition. The gear shifting between the three gears can be greatly reduced compared with the gear shifting between the two gears, so that the gear shifting impact can be reduced, the comfort of the vehicle is improved, the working efficiency of the motor can be improved, and the cruising mileage of the vehicle is increased.
4. The first gear shifter is mounted on the sun gear shaft and has two engaging teeth, one mounted on the first shifting driven gear and the other mounted on the second shifting driven gear. When the gear sleeve of the first gear shifter is meshed with the combined teeth on the first gear shifting driven gear, the power on the first gear shifting driven gear is transmitted to the sun gear shaft through the second gear shifter. When the gear sleeve of the first gear shifter is meshed with the combined gear on the second gear shifting driven gear, the power on the second gear shifting driven gear is transmitted to the sun gear shaft through the second gear shifter.
5. The second gear shifter is arranged on the frame of the planetary gear set, the combined teeth of the second gear shifter are arranged on the second gear shifting driven gear, when the gear sleeve of the second gear shifter is meshed with the combined teeth, the power on the first gear shifting driven gear is directly transmitted to the frame of the planetary gear set mechanism through the second gear shifter, at the moment, the planetary gear set mechanism does not work, primary gear transmission is reduced, and system transmission efficiency is improved.
6. The left position and the right position of the second gear shifting driven gear are respectively provided with a combination tooth, the left position combination tooth can be meshed with a joint sleeve of the first gear shifter, the right position combination tooth can be meshed with a joint sleeve of the second gear shifter, and the system is compact in structure and small in axial size.
7. The planet row is used as a torque final output structure, the sun gear of the planet row is used as a torque input end, the frame is used as a torque output end, a large reduction ratio can be realized, the torque bearing capacity is large, the occupied space is small, and the structure is compact.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of an electric drive bridge structure driven by a single motor according to a preferred embodiment of the present invention.
Fig. 2 is a schematic view showing an indirect engagement between an input driving gear and an input driven gear according to another preferred embodiment of the present invention.
Fig. 3 to 5 are schematic power transmission paths of three forward gears of the electric drive bridge structure driven by the single motor according to fig. 1.
Detailed Description
The best mode of the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is to be regarded as illustrative in nature and not as restrictive, and various changes and modifications may be made without departing from the spirit and scope of the present invention.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1, there is provided an electric drive bridge structure driven by a single motor, characterized by comprising:
an input driving gear 03 driven by a single motor 01;
a sun gear shaft 23 to which a planetary row is fixedly connected and to which a first shifter 12 is slidably connected;
the intermediate shaft 07 is sleeved outside the sun gear shaft 23 in a relatively rotatable manner and is fixedly connected with an input driven gear 06 and a first gear shifting driven gear 08, and the input driven gear 06 is driven by an input driving gear 03;
the second gear shifting driven gear 10 is sleeved outside the sun gear shaft 23 in a relatively rotatable manner;
the parallel shaft 14 is fixedly connected with a first shifting driving gear 09 and a second shifting driving gear 11, the first shifting driven gear 08 is driven by the first shifting driving gear 09, and the second shifting driven gear 10 is driven by the second shifting driving gear 11;
a second shifter 13 provided to the second shift driven gear 10 or the carrier 24 of the planetary row and selectively engaging or disengaging the second shift driven gear 10 and the carrier 24; and
a differential 19 connected to a carrier 24 of the planetary row through a differential case 18 and provided with a first output half shaft 21 and a second output half shaft 22;
the first gear shifter 12 is selectively engaged with the intermediate shaft 07 or the second shifting driven gear 10, the sun gear shaft 23 is a hollow shaft, and the first output half shaft 21 is inserted into the sun gear shaft 23.
According to another preferred embodiment of the present invention, the planetary gear train comprises a sun gear 15, planetary gears 16, a planet carrier 24 and a ring gear 17, the sun gear 15 being fixedly connected to a sun gear shaft 23, and the ring gear 17 being connected to the housing.
According to a further preferred embodiment of the present invention, the sun gear shaft 23 is arranged in parallel with the parallel shaft 14.
According to another preferred embodiment of the present invention, an idler gear 04 is engaged between the input driving gear 03 and the input driven gear 06.
According to another preferred embodiment of the present invention, referring to fig. 2, the electric drive axle structure driven by a single motor further comprises a transmission shaft 05, the transmission shaft 05 is fixedly connected with the idle gear 04 and the transmission wheel 25, the input driving gear 03 is engaged with the transmission wheel 25, and the idle gear 04 is engaged with the input driven gear 06.
According to a further preferred embodiment of the present invention, a power take-off 20 is connected to the first gear shifting driving gear.
According to a further preferred embodiment of the invention, the second gear shifter 13 is connected to the planet carrier of the first side of the planetary line and the differential housing 18 is connected to the planet carrier of the second side of the planetary line.
According to a further preferred embodiment of the invention, see fig. 3-5, the electric drive bridge construction has three forward gears.
Preferably, the vehicle axle comprises a motor 01, an input shaft 02 and an input driving gear 03 which are arranged on one side of the vehicle axle, wherein one end of the input shaft 02 is connected with the motor 01, the other end of the input shaft 02 is connected with the input driving gear 03, the input shaft 02 is connected with a rotor shaft of the motor 01 through a spline, and the input driving gear 03 is fixedly arranged on the input shaft 02.
Preferably, a transmission shaft 05 is arranged on one side of the axle, and a parallel shaft 14 is arranged on the other side of the axle, an idler wheel 04 is arranged on the transmission shaft 05, the idler wheel 04 is meshed with an input driving gear 03, a first gear-shifting driving gear 09 and a second gear-shifting driving gear 11 are arranged on the parallel shaft 14, and a power take-off 20 can be arranged on the first gear-shifting driving gear 09.
Preferably, the intermediate shaft 07 is sleeved on the sun gear shaft 23, and the intermediate shaft 07 is provided with an input driven gear 06 and a first shifting driven gear 08, wherein the input driven gear 06 is meshed with the idle gear 04, and the first shifting driven gear 08 is meshed with the first shifting driving gear 09. The sun gear shaft 23 is also sleeved with a second shifting driven gear 10 and is provided with a first gear shifter 12. The second shift driven gear 10 is engaged with the second shift driving gear 11, and the first shifter 12 is slidable left and right and engaged with engaging teeth fixedly installed at the a position of the first shift driven gear 08 and the B position of the second shift driven gear 10, respectively.
Preferably, the second shifter 13 is mounted on the carrier 24, and the second shifter 13 is slidable left and right and, when slid left, is engaged with the engaging tooth mounted at the C position of the second shifting driven gear 10.
Preferably, the sun gear 15 is mounted on the end of the sun gear shaft 23, the planet gears 16 are mounted on the planet carrier 24, and the ring gear 17 is fixedly mounted on the housing.
The working principle of the utility model is as follows.
Step A, power flow: the motor torque 01 is transmitted to the input driving gear 03 through the input shaft 02, the input driving gear 03 and the idler gear 04 fixedly mounted on the transmission shaft 05 are in a constant mesh state, the idler gear 04 is in a mesh state with the input driven gear 06 fixedly mounted on the intermediate shaft 07, and therefore the torque on the input driving gear 03 is transmitted to the intermediate shaft 07 through the idler gear 04 and the input driven gear 05 meshed therewith. A first shifting driven gear 08 is further mounted on the intermediate shaft 07, the first shifting driven gear 08 is meshed with a first shifting driving gear 09 mounted on a parallel shaft 14, a second shifting driving gear 11 is further mounted on the parallel shaft 14, the second shifting driving gear 11 is meshed with a second shifting driven gear 10 mounted on a sun gear shaft 23, when the first gear shifter 12 moves rightward, a gear sleeve of the first gear shifter 12 is meshed with a combined gear at a position B mounted on the second shifting driven gear 10, and torque on the intermediate shaft 07 is transmitted to the sun gear shaft 23 through the first shifting gear pair, the second shifting gear pair and the first gear shifter. The sun gear 15 is fixedly mounted at the end of the sun gear shaft 23, the sun gear 15 serves as a torque input end of the planetary gear train, the frame serves as a torque output end of the planetary gear train, and the frame is fixedly connected with the differential housing 18, so that the torque on the sun gear is transmitted to the differential housing 18 through the planetary gear train. The differential housing 18 transmits torque to the differential 19 via a spider, and the torque on the differential 19 is transmitted to the left and right axle shafts 21, 22 depending on the actual road conditions of the vehicle.
B, gear power flow: the motor torque 01 is transmitted to the input driving gear 03 through the input shaft 02, the input driving gear 03 and the idler gear 04 fixedly mounted on the transmission shaft 05 are in a constant mesh state, the idler gear 04 is in a mesh state with the input driven gear 06 fixedly mounted on the intermediate shaft 07, and therefore the torque on the input driving gear 03 is transmitted to the intermediate shaft 07 through the idler gear 04 and the input driven gear 05 meshed therewith. A first shift driven gear 08 is also mounted on the intermediate shaft 07, and when the first shifter 12 is moved leftward, the sleeve of the first shifter 12 engages with the engaging teeth of the a position mounted on the first shift driven gear 08, and the torque on the intermediate shaft 07 is transmitted to the sun gear shaft 23 via the first shifter 12. The sun gear 15 is fixedly mounted at the end of the sun gear shaft 23, the sun gear 15 serves as a torque input end of the planetary gear train, the frame serves as a torque output end of the planetary gear train, and the frame is fixedly connected with the differential housing 18, so that the torque on the sun gear is transmitted to the differential housing 18 through the planetary gear train. The differential housing 18 transmits torque to the differential 19 via a spider, and the torque on the differential 19 is transmitted to the left and right axle shafts 21, 22 depending on the actual road conditions of the vehicle.
C gear power flow: the motor torque 01 is transmitted to the input driving gear 03 through the input shaft 02, the input driving gear 03 and the idler gear 04 fixedly mounted on the transmission shaft 05 are in a constant mesh state, the idler gear 04 is in a mesh state with the input driven gear 06 fixedly mounted on the intermediate shaft 07, and therefore the torque on the input driving gear 03 is transmitted to the intermediate shaft 07 through the idler gear 04 and the input driven gear 05 meshed therewith. A first shifting driven gear 08 is further mounted on the intermediate shaft 07, the first shifting driven gear 08 is engaged with a first shifting driving gear 09 mounted on the parallel shaft 14, a second shifting driving gear 11 is further mounted on the parallel shaft 14, the second shifting driving gear 11 is engaged with a second shifting driven gear 10 mounted on the sun gear shaft 23, when the second shifter 13 moves leftward, a gear sleeve of the second shifter 13 is engaged with a coupling gear at a C position mounted on the second shifting driven gear 10, and torque on the intermediate shaft 07 is transmitted to the frame 24 through the first shifting gear pair, the second shifting gear pair and the second shifter. The frame serves as both the input and the output, so that the power is transmitted directly via the frame to the fixed differential housing 18. The differential housing 18 transmits torque to the differential 19 via a spider, and the torque on the differential 19 is transmitted to the left and right axle shafts 21, 22 depending on the actual road conditions of the vehicle.
The utility model discloses can obtain following one or more technological effect:
1. the four-shaft type arrangement can shorten the axial arrangement space by increasing the longitudinal space, and is convenient for the arrangement of the vehicle with a narrow frame.
2. The axial distance between the two shafts and the two three shafts can be respectively adjusted, gear parameters can be more reasonably designed, the structural arrangement is convenient, and the single motor is externally arranged to facilitate the disassembly and assembly of the motor.
3. The double-gear shifter structure is adopted, the three-gear function is achieved, the low gear is matched with a large transmission speed ratio, a large enough torque is provided for a vehicle under the working conditions of starting, getting rid of difficulties, climbing and the like, the high gear is matched with a small transmission speed ratio, a high enough rotating speed is provided for the vehicle under the working conditions of high speed running, idling and the like, the middle gear is matched with a transmission ratio between the low gear and the high gear, and a power requirement that the torque is high and the rotating speed is high is provided for the vehicle under the non-extreme working condition. The gear shifting between the three gears can be greatly reduced compared with the gear shifting between the two gears, so that the gear shifting impact can be reduced, the comfort of the vehicle is improved, the working efficiency of the motor can be improved, and the cruising mileage of the vehicle is increased.
4. The first gear shifter is mounted on the sun gear shaft and has two engaging teeth, one mounted on the first shifting driven gear and the other mounted on the second shifting driven gear. When the gear sleeve of the first gear shifter is meshed with the combined teeth on the first gear shifting driven gear, the power on the first gear shifting driven gear is transmitted to the sun gear shaft through the second gear shifter. When the gear sleeve of the first gear shifter is meshed with the combined teeth on the second gear shifting driven gear, the power on the second gear shifting driven gear is transmitted to the sun gear shaft through the second gear shifter.
5. The second gear shifter is arranged on the frame of the planetary gear set, the combined teeth of the second gear shifter are arranged on the second gear shifting driven gear, when the gear sleeve of the second gear shifter is meshed with the combined teeth, the power on the first gear shifting driven gear is directly transmitted to the frame of the planetary gear set mechanism through the second gear shifter, at the moment, the planetary gear set mechanism does not work, primary gear transmission is reduced, and system transmission efficiency is improved.
6. The left position and the right position of the second gear shifting driven gear are respectively provided with a combination tooth, the left position combination tooth can be meshed with a joint sleeve of the first gear shifter, the right position combination tooth can be meshed with a joint sleeve of the second gear shifter, and the system is compact in structure and small in axial size.
7. The planet row is used as a torque final output structure, the sun gear of the planet row is used as a torque input end, the frame is used as a torque output end, a large reduction ratio can be realized, the torque bearing capacity is large, the occupied space is small, and the structure is compact.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. An electrically driven bridge structure driven by a single motor, comprising:
an input drive gear driven by a single motor;
a sun gear shaft fixedly connected with the planet row and slidably connected with a first gear shifter;
the intermediate shaft is sleeved outside the sun gear shaft in a relatively rotating manner and is fixedly connected with an input driven gear and a first gear shifting driven gear, and the input driven gear is driven by an input driving gear;
the second gear shifting driven gear can be sleeved outside the sun wheel shaft in a relatively rotating manner;
the parallel shaft is fixedly connected with a first gear shifting driving gear and a second gear shifting driving gear, the first gear shifting driven gear is driven by the first gear shifting driving gear, and the second gear shifting driven gear is driven by the second gear shifting driving gear;
a second shifter provided to the second shift driven gear or the carrier of the planetary row and selectively engaging or disengaging the second shift driven gear with the carrier; and
the differential mechanism is connected with the planet carrier of the planet row through a differential mechanism shell and is provided with a first output half shaft and a second output half shaft;
the first gear shifter can be selectively jointed with an intermediate shaft or a second gear shifting driven gear, the sun gear shaft is a hollow shaft, and the first output half shaft penetrates through the sun gear shaft.
2. The single motor driven electric drive axle construction of claim 1 wherein the planetary row includes a sun gear, planet gears, a planet carrier, and an annulus gear, the sun gear being fixedly connected to the sun gear shaft and the annulus gear being connected to the housing.
3. The single motor driven electric transaxle structure of claim 2 wherein the sun gear shaft is disposed parallel to the parallel axis.
4. The single motor driven electric drive axle construction of any one of claims 1-3 wherein an idler gear is engaged between the input drive gear and the input driven gear.
5. The single motor driven electric drive axle construction of claim 4 further comprising a drive shaft fixedly connected to said idler gear and to a drive gear, said input drive gear being in meshing engagement with said drive gear and said idler gear being in meshing engagement with said input driven gear.
6. The single motor driven electric drive axle construction of claim 4 wherein the first shift driving gear is connected to a power take off.
7. The single motor driven electric drive axle configuration of claim 6, wherein the second shifter is connected to the carrier on a first side of the planetary row and the differential housing is connected to the carrier on a second side of the planetary row.
8. The single motor driven electric drive axle structure of claim 7 having three forward gears.
CN202223359210.9U 2022-12-14 2022-12-14 Electric drive bridge structure driven by single motor Active CN218777413U (en)

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Application Number Priority Date Filing Date Title
CN202223359210.9U CN218777413U (en) 2022-12-14 2022-12-14 Electric drive bridge structure driven by single motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116278687A (en) * 2023-05-26 2023-06-23 江苏速豹动力科技有限公司 Electric drive bridge and electric truck
CN116494740A (en) * 2023-05-26 2023-07-28 江苏速豹动力科技有限公司 Electric drive bridge and electric truck

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116278687A (en) * 2023-05-26 2023-06-23 江苏速豹动力科技有限公司 Electric drive bridge and electric truck
CN116494740A (en) * 2023-05-26 2023-07-28 江苏速豹动力科技有限公司 Electric drive bridge and electric truck
CN116494740B (en) * 2023-05-26 2023-09-08 江苏速豹动力科技有限公司 Electric drive bridge and electric truck
CN116278687B (en) * 2023-05-26 2023-09-22 江苏速豹动力科技有限公司 Electric drive bridge and electric truck

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