阅读说明：本技术 一种应用于新能源商用车的机电一体化传动总成 (Be applied to mechatronic transmission assembly of new forms of energy commercial car ) 是由 田冠军 石魏 赵铃 罗宏亮 田景笔 熊琦玮 王澍龙 李明 于 2019-02-28 设计创作，主要内容包括：本发明公开了一种应用于新能源商用车的机电一体化传动总成,包括壳体、减速器和驱动电机,壳体的两端安装有传动端盖和非传动端盖,壳体内设置有一分隔筋板,分隔筋板将壳体分隔为两侧的电机腔和减速器腔,驱动电机的电机轴的一端与非传动端盖枢接,另一端与分隔筋板枢接,且该电机轴穿过分隔筋板而与减速器的输入端连接,减速器的输出轴从传动端盖向外延伸。本发明通过将电机与行星减速器集成,缩短了传动系统的轴向尺寸,为整车布置节省了空间的同时减轻了系统的重量、降低了综合成本；省去了传统减速器的输入轴组件,提升了工况综合效率,减少失效点,提升了可靠性。(The invention discloses an electromechanical integrated transmission assembly applied to a new energy commercial vehicle, which comprises a shell, a speed reducer and a driving motor, wherein a transmission end cover and a non-transmission end cover are installed at two ends of the shell, a separating rib plate is arranged in the shell and divides the shell into a motor cavity and a speed reducer cavity at two sides, one end of a motor shaft of the driving motor is pivoted with the non-transmission end cover, the other end of the motor shaft of the driving motor is pivoted with the separating rib plate, the motor shaft penetrates through the separating rib plate and is connected with the input end of the speed reducer, and an output shaft of the speed reducer extends outwards. The motor and the planetary reducer are integrated, so that the axial size of a transmission system is shortened, the space is saved for the whole vehicle arrangement, the weight of the system is reduced, and the comprehensive cost is reduced; the input shaft assembly of the traditional speed reducer is omitted, the comprehensive efficiency of the working condition is improved, failure points are reduced, and the reliability is improved.)

1. The utility model provides a be applied to mechatronic transmission assembly of new forms of energy commercial car which characterized in that, includes casing (1), reduction gear (2) and driving motor (3), drive end cover (4) and non-drive end cover (5) are installed at the both ends of casing (1), be provided with one in casing (1) and separate gusset (6), separate gusset (6) will casing (1) is separated for motor chamber (7) and reduction gear chamber (8) of both sides, the one end of motor shaft (9) of driving motor (3) with non-drive end cover (5) pin joint, the other end with separate gusset (6) pin joint, and this motor shaft (9) pass separate gusset (6) and with the input of reduction gear (2) is connected, the output shaft of reduction gear (2) is followed drive end cover (4) are outwards extended.

2. The mechatronic transmission assembly applied to a new-energy commercial vehicle as defined in claim 1, wherein the speed reducer (2) is a single-row single-stage planetary gear comprising a sun gear (10), a planetary gear (11), a planetary gear pin (12), a planetary carrier (13) and a ring gear (14), a planetary carrier output shaft (16) of the planetary carrier (13) is an output shaft of the speed reducer 2), a lubricating oil pump (17) is coaxially connected to the planetary carrier output shaft (16), an input end of the lubricating oil pump (17) is connected to the speed reducer cavity (8), and an output end of the lubricating oil pump is connected to a meshing position of the planetary gear (11).

3. The mechatronic transmission assembly applied to a new-energy commercial vehicle according to claim 2, characterized in that a sun gear (10) is coaxially mounted on the motor shaft (9), the planetary gear (11) is simultaneously meshed with the sun gear (10) and a gear ring (14), the gear ring (14) is connected with the partition rib plate (6), the planetary gear (11) is pivoted with the planetary gear pin (12), the planetary gear pin (12) is fixedly connected to a planet carrier (13), an oil inlet channel (15) is arranged in the planetary gear pin (12), the oil inlet channel (15) is communicated with a central hole of the planetary gear (11), and the lubricating oil pump (17) is communicated with the oil inlet channel (15).

4. The mechatronic transmission assembly applied to a new-energy commercial vehicle as claimed in claim 3, wherein the lubricating oil pump (17) is installed on the outer side of the transmission end cover (4) and sealed by a sealing end cover (18) pivoted with the planet carrier output shaft (16), an oil delivery passage (19) communicated with the lubricating oil pump (17) is arranged in the planet carrier output shaft (16), and the oil delivery passage (19) is communicated with the oil inlet passage (15).

5. The mechatronic transmission assembly applied to a new energy commercial vehicle as claimed in claim 4, wherein the oil delivery passage (19) comprises a first radial oil passing hole (20) and an axial oil passing hole (21) which are arranged on the planet carrier output shaft (16), and a second radial oil passing hole (23) which is arranged on the planet carrier disc (22) of the planet carrier (13), the planet carrier disc (22) is provided with an oil passing counter bore (24), one end of the first radial oil passing hole (20) is communicated with the lubricating oil pump (17), the other end is communicated with one end of the axial oil passing hole (21), the other end of the axial oil passing hole (21) is communicated with the bottom of the oil passing counter bore (24), the other end of the oil passing counter bore (24) is communicated with one end of the second radial oil passing hole (23), and the other end of the second radial oil passing hole (23) is communicated with the oil inlet passage (15), the top of the oil through counter bore (24) is arranged in a sealing mode.

6. The mechatronic transmission assembly applied to a new-energy commercial vehicle according to claim 5, wherein the planet wheel pin shaft (12) is inserted into a pin shaft mounting hole (25) in the planet carrier disc (22), the planet wheel pin shaft (12) comprises an oil guide hole (26) which penetrates in the radial direction, one end of the oil guide hole (26) is communicated with the oil inlet channel (15), the other end of the oil guide hole is communicated with the second radial oil passing hole (23), and the planet wheel pin shaft (12) is fixed through a set screw (27) which is inserted into the oil guide hole (26) from the planet carrier disc (22).

7. The mechatronic transmission assembly applied to a new-energy commercial vehicle according to any one of claims 3 to 6, wherein a lubricating oil hole (28) communicated with the oil inlet channel (15) is further formed in the planet wheel pin shaft (12), a needle roller (29) is arranged between the planet wheel pin shaft (12) and the planet wheel (11), and a planet wheel oil outlet hole (30) is radially arranged on the planet wheel (11) in a penetrating manner.

8. The mechatronic transmission assembly applied to a new-energy commercial vehicle according to claim 7, characterized in that the planetary oil outlet hole (30) and the lubricating oil hole (28) are both arranged towards the center of the sun gear (10).

9. The mechatronic transmission assembly applied to the new-energy commercial vehicle according to any one of claims 2 to 5, further comprising a gear ring fixing disc (31) fixedly mounted on the separation rib plate (6), wherein an inner hole of the gear ring fixing disc (31) is in floating fit with an outer wall of the gear ring (14) through a spline, the gear ring fixing disc (31) is provided with a gear ring baffle ring (32) which is axially limited to the gear ring (14), and an inner hole of the sun gear (10) is in floating fit with an outer wall of the motor shaft (9) through a spline.

10. The mechatronic transmission assembly applied to a new-energy commercial vehicle according to any one of claims 1 to 5, characterized in that a cooling water channel (33) is arranged on the housing (1) in the circumferential direction, and the motor cavity (7) and the reducer cavity (8) are cooled by water cooling.

Technical Field

The invention relates to the technical field of vehicles, in particular to a mechatronic transmission assembly applied to a new energy commercial vehicle.

Background

With the high-speed development of the pure electric vehicle industry and the large-scale popularization of the market, the performance requirements of the industry on the pure electric vehicle are higher and higher. However, the driving range, safety, cost and the like of the electric vehicle are greatly restricted by the power battery and other key technologies. Therefore, before the problem of the battery is solved, the driving range and the dynamic property of the whole vehicle can be effectively improved by researching the electric drive and the transmission system. The motor and transmission integrated system is a main development direction at present, is one of key components of an electric automobile, and has important significance in improving the dynamic property, the economical efficiency and the like of the electric automobile in research and development.

At present, the motor and the speed reducer of the existing electric automobile generally adopt a split design mode, the axial size is large, more space needs to be occupied, meanwhile, the weight of a transmission assembly is also large, and due to the fact that an input shaft assembly of the speed reducer is added, failure points are increased, and the comprehensive efficiency is also reduced.

Disclosure of Invention

The invention aims to provide a mechatronic transmission assembly applied to a new energy commercial vehicle, so as to solve the problems.

In order to achieve the purpose, the invention firstly discloses an electromechanical integrated transmission assembly applied to a new energy commercial vehicle, which comprises a shell, a speed reducer and a driving motor, wherein transmission end covers and non-transmission end covers are installed at two ends of the shell, a separating rib plate is arranged in the shell and divides the shell into a motor cavity and a speed reducer cavity at two sides, one end of a motor shaft of the driving motor is pivoted with the non-transmission end covers, the other end of the motor shaft of the driving motor is pivoted with the separating rib plate, the motor shaft penetrates through the separating rib plate and is connected with an input end of the speed reducer, and an output shaft of the speed reducer extends outwards from the transmission end covers.

Furthermore, the speed reducer is a single-row single-stage planetary gear and comprises a sun gear, a planetary gear pin shaft, a planetary carrier and a gear ring, the planetary carrier output shaft of the planetary carrier is the output shaft of the speed reducer, a lubricating oil pump is coaxially connected to the planetary carrier output shaft, the input end of the lubricating oil pump is connected with the speed reducer cavity, and the output end of the lubricating oil pump is communicated with the meshing position of the planetary gear.

Further, the sun gear is coaxially mounted on the motor shaft, the planet gear is meshed with the sun gear and the gear ring at the same time, the gear ring is connected with the partition rib plate, the planet gear is pivoted with the planet gear pin shaft, the planet gear pin shaft is fixedly connected to the planet carrier, an oil inlet channel is arranged in the planet gear pin shaft, the oil inlet channel is communicated with a center hole of the planet gear, and the lubricating oil pump is communicated with the oil inlet channel.

Furthermore, the lubricating oil pump is installed on the outer side of the transmission end cover and sealed through a sealing end cover pivoted with the output shaft of the planet carrier, an oil conveying channel communicated with the lubricating oil pump is arranged in the output shaft of the planet carrier, and the oil conveying channel is communicated with the oil inlet channel.

Furthermore, the oil delivery channel comprises a first radial oil passing hole and an axial oil passing hole which are arranged on the planet carrier output shaft, and a second radial oil passing hole which is arranged on a planet carrier disc of the planet carrier, wherein an oil passing counter bore is arranged on the planet carrier disc, one end of the first radial oil passing hole is communicated with the lubricating oil pump, the other end of the first radial oil passing hole is communicated with one end of the axial oil passing hole, the other end of the axial oil passing hole is communicated with the bottom of the oil passing counter bore, the other end of the oil passing counter bore is communicated with one end of the second radial oil passing hole, the other end of the second radial oil passing hole is communicated with the oil inlet channel, and the top of the oil passing counter bore is sealed.

Furthermore, the planet wheel pin shaft is inserted into a pin shaft mounting hole in the planet carrier disc, the planet wheel pin shaft comprises an oil guide hole which is radially communicated, one end of the oil guide hole is communicated with the oil inlet channel, the other end of the oil guide hole is communicated with the second radial oil passing hole, and the planet wheel pin shaft is fixed through a set screw which is inserted into the oil guide hole from the planet carrier disc.

Furthermore, a lubricating oil hole communicated with the oil inlet channel is further formed in the planet wheel pin shaft, a roller pin is arranged between the planet wheel pin shaft and the planet wheel, and a planet wheel oil outlet hole is formed in the planet wheel in a radially penetrating mode.

Furthermore, the planet wheel oil outlet and the lubricating oil hole are both arranged towards the center of the sun wheel.

Further, still include fixed mounting separate the ring gear fixed disk on the gusset, the hole of ring gear fixed disk with the outer wall of ring gear passes through the floating fit of spline, it is right to install on the ring gear fixed disk ring gear axial spacing ring gear keeps off, the hole of sun gear with the outer wall of motor shaft passes through the floating fit of spline.

Furthermore, circumference is equipped with the cooling water course on the casing, motor chamber and reduction gear chamber cool off through water-cooled mode.

Compared with the prior art, the invention has the advantages that:

1. the motor and the planetary reducer are integrated into a whole, so that the axial size of a transmission system is greatly shortened, the space is saved for the whole vehicle arrangement, the weight of the system is reduced, and the comprehensive cost is reduced;

2. the cooling water channel required by the motor is used for cooling the reducer end, so that the heat dissipation of a transmission system is improved;

3. according to the invention, through the integration of the motor and the planetary reducer, an input shaft assembly of the traditional reducer is omitted, the comprehensive efficiency of working conditions is improved, failure points are reduced, and the reliability is improved;

4. according to the invention, the lubricating oil pump and the lubricating channel thereof are skillfully arranged, so that the lubricating effect on the planetary reducer is improved, and the service life of the planetary reducer is further prolonged;

5. according to the invention, the spline floating fit mode is arranged between the sun gear and the motor shaft and between the gear ring and the gear ring fixing disc, so that the clamping stagnation and severe abrasion between the sun gear and the planet gear are avoided, the assembly manufacturability is improved, and the service lives of the sun gear and the planet gear are also prolonged;

6. the invention can meet the requirements of 8-12 m new energy passenger cars by adopting a fixed speed ratio.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front view of an electromechanical integrated transmission assembly applied to a new energy commercial vehicle according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view at A of FIG. 1;

FIG. 3 is a schematic top view of an electromechanical integrated transmission assembly applied to a new energy commercial vehicle according to an embodiment of the present invention.

Illustration of the drawings:

1. a housing; 2. a speed reducer; 3. a drive motor; 4. a drive end cap; 5. a non-drive end cap; 6. separating rib plates; 7. a motor cavity; 8. a reducer cavity; 9. a motor shaft; 10. a sun gear; 11. a planet wheel; 12. a planet wheel pin shaft; 13. a planet carrier; 14. a ring gear; 15. an oil inlet channel; 16. a planet carrier output shaft; 17. a lubricating oil pump; 18. sealing the end cap; 19. an oil delivery passage; 20. a first radial oil passing hole; 21. an axial oil passing hole; 22. a planet carrier disc; 23. a second radial oil passing hole; 24. oil-passing counter bores; 25. a pin shaft mounting hole; 26. an oil guide hole; 27. tightening the screw; 28. a lubricating oil hole; 29. rolling needles; 30. the planet wheel oil outlet hole; 31. a gear ring fixing disc; 32. a gear ring blocking ring; 33. a cooling water channel; 34. a stator assembly; 35. a rotor assembly; 36. an oil extractor; 37. a bowl-shaped plug sheet.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in figures 1-3, the invention firstly discloses an electromechanical integrated transmission assembly applied to a new energy commercial vehicle, which comprises a shell 1, a speed reducer 2 and a driving motor 3, wherein a transmission end cover 4 and a non-transmission end cover 5 are detachably mounted at two ends of the shell 1 through bolts, an oil nameplate, a junction box and the like are mounted outside the shell 1, a separating rib plate 6 is arranged in the shell 1, the separating rib plate 6 is formed into an integral structure by casting and machining, the shell 1 is divided into a motor cavity 7 and a speed reducer cavity 8 at two sides through the separating rib plate 6, wherein the driving motor 3 comprises a stator assembly 34, a rotor assembly 35 and a motor shaft 9, the stator assembly 34 is fixedly mounted on the inner wall of the shell 1, the rotor assembly 35 is coaxially and fixedly connected with the motor shaft 9, one end of the motor shaft 9 is pivoted with the non-transmission end cover 5 through a bearing mounted on the non, the other end of the motor shaft 9 is also pivoted with the separating rib plate 6 through a bearing, a sealing ring is arranged at the pivoting position of the motor shaft 9 and the separating rib plate 6 for sealing, so that lubricating oil in a speed reducer cavity 8 is prevented from entering a motor cavity 7, the motor shaft 9 penetrates through the separating rib plate 6 to be coaxially connected with a sun gear 10 at the input end of the speed reducer 2, an output shaft of the speed reducer 2 extends outwards from the transmission end cover 4, and particularly, the output shaft of the speed reducer 2 is also pivoted with the transmission end cover 4 through the bearing.

In this embodiment, the speed reducer 2 is a single-row single-stage planetary gear with a fixed reduction ratio, including sun gear 10, planet gear 11, planet gear pin 12, planet carrier 13 and ring gear 14, sun gear 10 is coaxially installed on motor shaft 9, both sides of planet gear 11 simultaneously with sun gear 10, ring gear 14 meshes, ring gear 14 is connected with partition rib plate 6, planet gear 11 is pivoted with planet gear pin 12, planet gear pin 12 is fixedly connected on planet carrier 13, planet carrier output shaft 16 of planet carrier 13 is the output shaft of speed reducer 2, wherein, driving motor 3 transmits power to sun gear 10 through motor shaft 9, sun gear 10 transmits to planet gear 11, because ring gear 14 is fixed then planet gear 11 transmits power to planet carrier 13, and planet carrier 13 transmits to planet carrier output shaft 16, thereby realizing power output.

In this embodiment, an oil inlet channel 15 is disposed in the planet wheel pin 12, specifically, a long counter bore is disposed in the center of the planet wheel pin 12 along the axial direction, the oil inlet channel 15 is communicated with the center hole of the planet wheel 11, so as to output the lubricating oil in the oil inlet channel 15 into the center hole of the planet wheel 11 for lubrication, a lubricating oil pump 17 is coaxially connected to the planet carrier output shaft 16 (the oil pump rotor of the lubricating oil pump 17 is connected to the planet carrier output shaft 16 through a single bond), wherein the lubricating oil pump 17 is installed in the counter bore on the outer side of the transmission end cover 4 and sealed by a sealing end cover 18 pivoted to the planet carrier output shaft 16 (the lubricating oil pump 17 may also be installed on the side of the sealing end cover 18), an oil delivery channel 19 communicated with the lubricating oil pump 17 is disposed in the planet carrier output shaft 16, the oil delivery channel 19 is communicated with the oil inlet channel, the output end of the lubricating oil pump 17 is communicated with the oil inlet passage 15. Specifically, the oil delivery channel 19 includes a first radial oil passing hole 20 and an axial oil passing hole 21 which are arranged on the planet carrier output shaft 16, the first radial oil passing hole 20 adopts a radial drilling mode, the axial oil passing hole 21 adopts an axial drilling mode, and a second radial oil passing hole 23 which is arranged on the planet carrier disc 22 of the planet carrier 13, the second radial oil passing hole 23 penetrates through the side wall of the oil passing counter bore 24 from the outer wall to the center of the planet carrier disc 22, the planet carrier disc 22 is provided with an oil passing counter bore 24, the oil passing counter bore 24 is opened towards the planet carrier output shaft 16 from the center of the planet carrier disc 22, one end of the first radial oil passing hole 20 is communicated with the lubricating oil pump 17, the other end is communicated with one end of the axial oil passing hole 21, the other end of the axial oil passing hole 21 is communicated with the bottom of the oil passing counter bore 24, the other end of the oil passing counter bore 24 is communicated with one end of the second radial oil passing hole 23, the other end of the second radial oil, the top of the oil passing counter bore 24 is sealed by a bowl-shaped plug piece 37 (the motor shaft 9 is a hollow shaft, and the opening position is also sealed by the bowl-shaped plug piece 37), the planet wheel pin shaft 12 is further provided with a lubricating oil hole 28 communicated with the oil inlet channel 15, the lubricating oil hole 28 is communicated with the oil inlet channel 15 and the center hole of the planet wheel 11, a roller pin 29 is arranged between the planet wheel pin shaft 12 and the planet wheel 11, and the planet wheel 11 is radially provided with a planet wheel oil outlet 30 in a penetrating mode. Therefore, the lubricating oil enters the lubricating oil pump 17 from the oil suction device 36, is pumped to the first radial oil passing hole 20 through the lubricating oil pump 17, sequentially passes through the axial oil passing hole 21, the oil passing counter bore 24, the second radial oil passing hole 23 and the oil inlet channel 15, and then passes through the oil inlet channel 15, the lubricating oil hole 28 and the planet wheel oil outlet hole 30 to respectively lubricate the rolling of the needle roller 29 and the meshing part of the planet wheel 11 and the sun wheel 10.

The planet wheel pin shaft 12 is inserted into a pin shaft mounting hole 25 on the planet carrier disc 22, the planet wheel pin shaft 12 comprises a radially through oil guide hole 26, one end of the oil guide hole 26 is communicated with the oil inlet channel 15, the other end of the oil guide hole is communicated with the second radial oil passing hole 23, the planet wheel pin shaft 12 is fixed radially and axially through a set screw 27 inserted into the oil guide hole 26 from the planet carrier disc 22, and the opening of the oil inlet channel 15 is sealed through a plug with threads.

In this embodiment, the planet oil outlet 30 and the lubricating oil hole 28 are both arranged towards the center of the sun gear 10, and when lubricating oil is pumped by the lubricating oil pump 17 and moves to the sun gear 10 through the planet oil outlet 30 and the lubricating oil hole 28, and when the planet gear 11 revolves around the sun gear 10, the lubricating oil is thrown outwards under the action of centrifugal force, so that the lubricating oil flows to the meshing position of the planet gear 11 and the gear ring 14, and the effective lubrication of the whole speed reducer 2 is achieved.

In this embodiment, in order to avoid the clamping stagnation and the severe abrasion between the sun gear 10 and the planet gear 11, the assembly manufacturability is improved, and further, the service lives of the sun gear 10 and the planet gear 11 are also prolonged, the sun gear and planet gear assembly further comprises a gear ring fixing disc 31 fixedly mounted on the partition rib plate 6, an inner hole of the gear ring fixing disc 31 is in floating fit with the outer wall of the gear ring 14 through a spline, that is, the gear ring 14 is allowed to float in a certain radial direction, and meanwhile, similarly, the inner hole of the sun gear 10 is in floating fit with the outer wall of the motor shaft 9 through. And a gear ring retaining ring 32 for axially retaining the gear ring 14 is mounted on the gear ring fixing disc 31.

In this embodiment, the casing 1 is circumferentially provided with the cooling water channel 33, and the motor cavity 7 and the reducer cavity 8 are cooled by water cooling, so that the heat dissipation of the transmission system is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.