CN217583045U

CN217583045U - Two-gear speed reducer for new energy automobile

Info

Publication number: CN217583045U
Application number: CN202123128552.5U
Authority: CN
Inventors: 高华; 路超
Original assignee: Nanjing Bangqi Automatic Transmission Co ltd
Current assignee: Nanjing Bangqi Automatic Transmission Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-10-14
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a two grades of reduction gears for new energy automobile, including planet row system, first gear gearset, second gear gearset, clutch and stopper, the clutch is integrated on star row system's ring gear, and the one end of clutch and the output shaft of motor, the other end and the second gear gearset of clutch are connected, and the stopper is connected with star row system's sun gear, and first gear gearset is connected with star row system's planet wheel. The utility model discloses a planet is arranged the structure and is increased the velocity ratio, makes reduction gear overall structure compacter, and clutch and stopper are integrated respectively on ring gear and sun gear, open and close the clutch through the electron oil pump and realize unpowered interrupt with the stopper and shift, have improved the power and the economic type of whole car, have strengthened the output performance of motor output power.

Description

Two-gear speed reducer for new energy automobile

Technical Field

The utility model belongs to the technical field of new forms of energy flight speed reduction, concretely relates to two keep off reduction gears for new energy automobile.

Background

The new energy automobile speed reducer is used for coordinating the rotating speed of the motor and the actual speed of the vehicle, and the motor works in the best power performance state through the speed ratio of the speed reducer. The power device of pure electric vehicles and traditional vehicles has different working characteristics, and the pure electric vehicles can output large torque at low speed and continuously have constant power at high speed, and the pure electric vehicles and the traditional vehicles are basically in the form of motors and single-stage speed reducers in the current market. However, with the rapid development of pure electric vehicles, the whole automobile factory puts more demands on the power assembly, such as: the power and the economical efficiency of the whole vehicle are improved, the system efficiency is improved, and the system modularization of the motor, the speed reducer and the controller is realized. According to market demands, many customers develop a parallel shaft type two-gear speed reducer, the speed reducer can improve the efficiency and the economy of the whole vehicle, but the power interruption condition exists, and the comfort of users is reduced.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model aims to provide a simple structure, convenient to use's two keep off reduction gears for new energy automobile, these two keep off reduction gear space compactness, efficient, and unpowered interruption, improved the power and the economic type of whole car, strengthened the output performance of motor output power.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a two keep off reduction gears for new energy automobile, includes planet row system, a fender gear train, keeps off gear train, clutch and stopper, the clutch is integrated on the ring gear of star row system, and the one end of clutch and the output shaft of motor, the other end and the fender gear train of clutch are connected, and the stopper is connected with the sun gear of star row system, and a fender gear train is connected with the planet wheel of star row system.

Furthermore, the two-gear speed reducer further comprises a differential mechanism, the differential mechanism comprises a connecting shaft, an input gear and an output gear, the input gear is installed on the connecting shaft, the output gear is meshed with the input gear, the output gear is connected with a wheel end, and a first gear group and a second gear group are connected with the connecting shaft.

Furthermore, a keep off gear group including a fender gear I, a fender gear II and hollow shaft, a fender gear I is connected with the planet wheel through the hollow shaft, a fender gear I and planet wheel synchronous rotation, a fender gear II is installed on the connecting axle, a fender gear II and I meshing of a fender gear.

Further, two gear train include two gear I, two gear II, two gear III and transmission shafts, and two gear I are connected with the clutch, and two gear I are installed in the one end of transmission shaft, and the transmission shaft passes from the hollow shaft, and two gear II install at the other end of transmission shaft, and two gear II and two gear I synchronous rotation, two gear III are installed on the connecting axle, two gear III and two gear II meshing.

Furthermore, the first gear II, the second gear III and the input gear are connected through a connecting shaft to rotate synchronously, and the input gear is located between the first gear II and the second gear III.

Further, two keep off the reduction gear still include electron oil pump I, stopper fixed mounting on the reduction gear casing, and electron oil pump I is connected with the stopper, and electron oil pump I is opened, and the stopper is closed, and the sun gear is died by the lock, and power passes to the ring gear through the motor, and the ring gear passes through planet wheel and hollow shaft and transmits power to a fender gear I, and a fender gear I passes to a fender gear II with power, and a fender gear II transmits power to differential mechanism to wheel end through the connecting axle.

Further, two keep off the reduction gear and still include electron oil pump II, and electron oil pump II is connected with the clutch, and electron oil pump II opens, and the clutch is closed, and power directly passes to two gears I through the motor, and two gears II pass through the transmission shaft and two I synchronous rotations of gear, pass to two gears III with power, and two gears III transmit power to differential mechanism to wheel end through the connecting axle.

Adopt the utility model discloses technical scheme's advantage does:

1. the utility model integrates a gear on the clutch shaft, and when the clutch is closed, the power can be directly input from the motor; the other gear is integrated on the planetary gear train, and after the brake is closed, the power of the motor can be output through the planetary gear train, so that the structure can realize unpowered interrupted gear shifting; the gears of the two gears are distributed front and back through the planetary row and hollow shaft structure, so that the whole structure is more compact; in addition, the torque increasing effect is realized by adopting a planetary row structure, the higher speed ratio of a low-speed gear can be realized, and the climbing performance of the whole vehicle is improved.

2. The utility model discloses a two keep off unpowered of reduction gear and shift to arrange two fender gear through the planet row structure on same shafting, and the planet row can realize increasing the turn round, realizes a higher fender velocity ratio, improves the climbing performance of whole car, and the high-speed stage realizes the unpowered switching of two fender, improves the efficiency and the travelling comfort of whole car.

Drawings

The present invention will be described in further detail with reference to the following drawings and detailed description:

fig. 1 is the structure schematic diagram of the two-gear speed reducer of the present invention.

The labels in the above figures are respectively: 1. a planet row system; 2. a first gear group; 3. a second gear set; 4. A clutch; 5. a brake; 6. a differential gear.

Detailed Description

In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; "circumferential" and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are for convenience of description and simplified description only, and do not indicate or imply that the indicated device or element must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.

As shown in fig. 1, a two-gear speed reducer for a new energy automobile includes a planetary gear train 1, a first-gear train 2, a second-gear train 3, a clutch 4 and a brake 5, where the clutch 4 is integrated on a gear ring 11 of the planetary gear train 1, one end of the clutch 4 is connected with an output shaft of a motor 9, the other end of the clutch 4 is connected with the second-gear train 3, the brake 5 is connected with a sun gear 12 of the planetary gear train 1, and the first-gear train 2 is connected with a planetary gear 13 of the planetary gear train 1. The utility model discloses a planet row structure increases the velocity ratio, makes reduction gear overall structure compacter, and clutch 4 and stopper 5 are integrated respectively on ring gear and sun gear, open and close the clutch through the electronic oil pump and realize unpowered interruption with the stopper and shift, have improved the power and the economic type of whole car, have strengthened the output performance of motor output power.

The two-gear speed reducer further comprises a differential 6, the differential 6 comprises a connecting shaft 61, an input gear 62 and an output gear 63, the input gear 62 is mounted on the connecting shaft 61, the output gear 63 is meshed with the input gear 62, the output gear 63 is connected with a wheel end, and the first gear set 2 and the second gear set 3 are connected with the connecting shaft 61.

The first gear group 2 comprises a first gear I21, a first gear II 22 and a hollow shaft 23, the first gear I21 is connected with the planet wheel 13 through the hollow shaft 23, the first gear I21 and the planet wheel 13 rotate synchronously, the first gear II 22 is arranged on the connecting shaft 61, and the first gear II 22 is meshed with the first gear I21.

The second gear set 3 comprises a second gear I31, a second gear II 32, a second gear III 33 and a transmission shaft 34, the second gear I31 is connected with the clutch 4, the second gear I31 is arranged at one end of the transmission shaft 34, the transmission shaft 34 penetrates through the hollow shaft 23, the second gear II 32 is mounted at the other end of the transmission shaft 34, the second gear II 32 and the second gear I31 rotate synchronously, the second gear III 33 is mounted on the connecting shaft 61, and the second gear III 33 is meshed with the second gear II 32.

The first gear II 22, the second gear III 33 and the input gear 62 are connected through a connecting shaft 61 to rotate synchronously, and the input gear 62 is located between the first gear II 22 and the second gear III 33.

The two-gear speed reducer further comprises an electronic oil pump I71, the brake 5 is fixedly mounted on a speed reducer shell, the electronic oil pump I71 is connected with the brake 5, the electronic oil pump I71 is opened, the brake 5 is closed, a sun gear 12 is locked, power is transmitted to the gear ring 11 through the motor, the gear ring 11 transmits the power to a first gear I21 through the planet gear 13 and the hollow shaft 23, the first gear I21 transmits the power to a first gear II 22, and the first gear II 22 transmits the power to the differential 6 to a wheel end through the connecting shaft 61.

The two-gear speed reducer further comprises an electronic oil pump II 72, the electronic oil pump II 72 is connected with the clutch 4, the electronic oil pump II 72 is started, the clutch 4 is closed, power is directly transmitted to the two-gear I31 through the motor, the two-gear II 32 rotates synchronously with the two-gear I31 through the transmission shaft, the power is transmitted to the two-gear III 33, and the two-gear III 33 transmits the power to the differential 6 to the wheel end through the connecting shaft 61.

The utility model discloses a two electronic oil pumps can direct control clutch and stopper, need not to increase hydraulic pressure or pneumatic means, and the time of shifting is fast with corresponding speed to improve the stability and the reliability of shifting.

The utility model discloses a planet row structure carries out unpowered interrupt and shifts, and stopper electronic oil pump opens the back, and stopper 5 closes, and the sun gear is locked and is died, and power passes through motor end to ring gear, and the ring gear keeps off the gear through planet wheel shafting with power transmission one, keeps off the gear with power transmission to differential mechanism to wheel end. And in the high-speed stage, the electronic oil pump of the brake is closed, the electronic oil pump of the clutch is opened, the clutch 4 is closed, power is directly connected to the second-gear through the motor end, and the second-gear transmits the power to the differential to the wheel end. The whole speed reducer is matched with the clutch through the brake, and uninterrupted output of power flow is completed.

The utility model integrates a gear on the clutch shaft, and when the clutch is closed, the power can be directly input from the motor; the other gear is integrated on the planetary gear train, and after the brake is closed, the power of the motor can be output through the planetary gear train, so that the structure can realize unpowered interrupted gear shifting; the gears of the two gears are distributed front and back through the planetary row and hollow shaft structure, so that the whole structure is more compact; in addition, the torque increasing effect is realized by adopting a planetary row structure, the higher speed ratio of a low-speed gear can be realized, and the climbing performance of the whole vehicle is improved.

The utility model discloses a two keep off unpowered of reduction gear and shift to arrange two fender gear gears on same shafting through the planet row structure, and the planet row can realize increasing the torsion, realizes a higher fender speed ratio, improves the climbing performance of whole car, and the high-speed stage realizes the unpowered switching of two fender, improves the efficiency and the travelling comfort of whole car.

Based on the utility model discloses a two keep off the reduction gear and adopt appropriate variable speed system and control strategy, can make repayment braked allowed range widen to adapt to more operating modes, make whole car energy-conservation more effective, improve and continue to go the mileage.

Compare single reduction gear, performance such as low-speed starting acceleration nature, high-speed cruise speed and the slope of climbing can be compromise to the two-gear reduction gear, and high-speed stage can provide the electric quantity utilization ratio, increases the driving comfort.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without the technical solutions of the present invention, or the present invention can be directly applied to other occasions without the improvements, and all are within the protection scope of the present invention.

Claims

1. The utility model provides a two keep off reduction gears for new energy automobile which characterized in that: including planet row system (1), a fender gear train (2), two fender gear sets (3), clutch (4) and stopper (5), clutch (4) are integrated on ring gear (11) of planet row system (1), and the one end of clutch (4) and the output shaft of motor (9), and the other end and the two fender gear sets (3) of clutch (4) are connected, and stopper (5) are connected with sun gear (12) of planet row system (1), and a fender gear train (2) is connected with planet wheel (13) of planet row system (1).

2. The two-gear speed reducer for the new energy automobile according to claim 1, characterized in that: the two-gear speed reducer further comprises a differential (6), the differential (6) comprises a connecting shaft (61), an input gear (62) and an output gear (63), the input gear (62) is installed on the connecting shaft (61), the output gear (63) is meshed with the input gear (62), the output gear (63) is connected with a wheel end, and a first gear set (2) and a second gear set (3) are connected with the connecting shaft (61).

3. The two-gear speed reducer for the new energy automobile according to claim 2, characterized in that: a fender gear group (2) includes a fender gear I (21), a fender gear II (22) and hollow shaft (23), and a fender gear I (21) is connected with planet wheel (13) through hollow shaft (23), and a fender gear I (21) rotates with planet wheel (13) synchronous, and a fender gear II (22) is installed on connecting axle (61), and a fender gear II (22) and a fender gear I (21) meshing.

4. The two-gear speed reducer for the new energy automobile according to claim 3, characterized in that: two keep off gear train (3) including two gears I (31), two keep off gear II (32), two keep off gear III (33) and transmission shaft (34), two keep off gear I (31) and be connected with clutch (4), two keep off gear I (31) and install the one end in transmission shaft (34), pass in hollow shaft (23) transmission shaft (34), the other end in transmission shaft (34) is installed in two gears II (32), two keep off gear II (32) and two synchronous rotations of gear I (31), two keep off gear III (33) and install on connecting axle (61), two keep off gear III (33) and two meshes of gear II (32).

5. The two-gear speed reducer for the new energy automobile according to claim 4, characterized in that: the first gear II (22), the second gear III (33) and the input gear (62) are connected through a connecting shaft (61) to rotate synchronously, and the input gear (62) is located between the first gear II (22) and the second gear III (33).

6. The two-gear speed reducer for the new energy automobile according to claim 5, characterized in that: two keep off the reduction gear and still include electronic oil pump I (71), stopper (5) fixed mounting is on the reduction gear casing, I (71) of electronic oil pump are connected with stopper (5), I (71) of electronic oil pump are opened, stopper (5) are closed, sun gear (12) wheel is locked, power passes to ring gear (11) through the motor, ring gear (11) are through planet wheel (13) and hollow shaft (23) with power transmission to a fender gear I (21), a fender gear I (21) pass to a fender gear II (22) with power transmission, a fender gear II (22) are through connecting axle (61) with power transmission to differential mechanism (6) to wheel end.

7. The two-gear speed reducer for the new energy automobile according to claim 6, characterized in that: two keep off the reduction gear and still include electronic oil pump II (72), and electronic oil pump II (72) are connected with clutch (4), and electronic oil pump II (72) are opened, and clutch (4) are closed, and power directly passes to two gears I (31) through the motor, and two gears II (32) pass through the transmission shaft and keep off gear I (31) synchronous revolution, pass to two gears III (33) with power, and two gears III (33) are through connecting axle (61) with power transmission differential mechanism (6) to wheel end.