CN111806157A - Electric drive axle assembly - Google Patents
Electric drive axle assembly Download PDFInfo
- Publication number
- CN111806157A CN111806157A CN202010691528.3A CN202010691528A CN111806157A CN 111806157 A CN111806157 A CN 111806157A CN 202010691528 A CN202010691528 A CN 202010691528A CN 111806157 A CN111806157 A CN 111806157A
- Authority
- CN
- China
- Prior art keywords
- differential
- axle housing
- motor
- shell
- reduction gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
- B60B35/163—Axle housings characterised by specific shape of the housing, e.g. adaptations to give space for other vehicle elements like chassis or exhaust system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Retarders (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
The invention provides an electric drive axle assembly, which comprises a left axle housing (1) and a right axle housing (5), wherein a motor shell (2) is connected to the left axle housing (1), a motor (3) is arranged in the motor shell (2), and the electric drive axle assembly is characterized in that: extend reduction gear differential left side casing (4) at motor casing (2) right-hand member, extend reduction gear differential right side casing (6) in the one end of right axle housing (5), reduction gear differential left side casing (4) and reduction gear differential right side casing (6) correspond and connect the cooperation, be equipped with corresponding complex reduction gear (7) and differential mechanism (8) in reduction gear differential left side casing (4) and reduction gear differential right side casing (6). The invention has simple structure and convenient assembly, reduces the working intensity of personnel, improves the production efficiency and reduces the product cost.
Description
The technical field is as follows:
the invention relates to the field of vehicle transmission, in particular to an electric drive axle assembly.
Background art:
at present, most of existing electric drive rear axles on the market are of offset coaxial type, the mechanical structure is simple, the bearing torque is high, the integration and modularization degree are higher, the structure of the electric drive axle assembly is very compact, the whole vehicle carrying is facilitated, and the requirement of the whole vehicle arrangement space is greatly met. Therefore, my company has filed for application number: chinese patent CN 201821501890.4. However, in practical use, the structure of the patent has abrupt section change and concentrated stress, is easy to cause fatigue cracking, has poor bearing capacity, is relatively suitable for vehicles such as pickup trucks, micro trucks and the like, and has a relatively limited application range; meanwhile, the requirement on the reliability of the whole assembly of the axle is high, the manufacturing efficiency is reduced due to the increase of the working procedures, and the production cost is increased.
The invention content is as follows:
the invention provides an electric drive axle assembly for overcoming the defects in the prior art.
The application provides the following technical scheme:
the utility model provides an electricity drives axle assembly, it includes left axle housing and right axle housing, is connected with the motor casing on left axle housing, is equipped with the motor in the motor casing, wears to be equipped with left semi-axis in left axle housing, wears to be equipped with right semi-axis, its characterized in that at right axle housing: extend reduction gear left side casing at the motor casing right-hand member, extend reduction gear right side casing in the one end of right axle housing, reduction gear left side casing and reduction gear right side casing correspond and connect the cooperation, be equipped with corresponding complex reduction gear and differential mechanism in reduction gear left side casing and reduction gear right side casing, right side axle in differential mechanism one end and the right axle housing forms the transmission cooperation, the output shaft of motor inserts differential mechanism's the other end and forms the transmission cooperation rather than, still wears to be equipped with the bolt on left axle housing, the bolt pass behind motor casing, reduction gear left side casing and be connected fixedly with reduction gear right side casing.
On the basis of the technical scheme, the following further technical scheme can be provided:
an observation hole is formed in the motor casing, a sealing plug which is correspondingly matched with the observation hole is arranged on the observation hole, and a sealing ring is further sleeved on the sealing plug.
The output shaft one end of motor stretches out the motor casing and inserts in the left axle housing, is equipped with the spline groove at its tip, left semi-axis one end in the left axle housing inserts the spline groove rather than being connected the cooperation.
The differential mechanism is characterized in that a bearing is sleeved at the other end of the differential mechanism, and an installation frame is connected between the bearing and the left shell of the differential mechanism of the speed reducer.
The invention has the advantages that:
the invention has simple structure and convenient assembly, reduces the working intensity of personnel, improves the production efficiency and reduces the product cost. In addition, the whole bridge structure is enabled to be smooth in transition, the risk of fatigue fracture is reduced, and the NVH performance and the whole vehicle safety performance of the electric drive bridge assembly are improved.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an enlarged view of a in fig. 1.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, an electric drive axle assembly includes a left axle housing 1 and a right axle housing 5, each of which has a wheel end member 14 at one end of each of the left axle housing 1 and the right axle housing 5. The wheel end member 14 is conventional in the art and therefore its construction is not described here again.
Wear to be equipped with coaxial distribution's left semi-axis 1a in left axle housing 1, be equipped with enlargement portion 1b at left axle housing 1 open end, be connected with motor casing 2 through first bolt 1c on enlargement portion 1b one side, be equipped with motor 3 in motor casing 2. The motor controller 3a is connected to the outer side of the motor casing 2 through bolts, and the motor controller 3a is in electric signal connection and matching with the motor 3 through a lead not shown in the figure.
A right axle housing 5a coaxially distributed is arranged in the right axle housing 5 in a penetrating manner, and the opening end of one side of the right axle housing 5 extends outwards to form a right shell 6 of the speed reducer differential mechanism. The left reducer differential shell 4 and the right reducer differential shell 6 are fixedly connected through a second bolt 15 to form a reducer differential mounting shell.
The expansion part 1b of the left axle housing 1 is also provided with a bolt 9 with a longer rod body in a penetrating way, and one end of the bolt 9 passes through the expansion part 1b, the motor housing 2 and the left speed reducer differential housing 4 and then is fixedly connected with the right speed reducer differential housing 6. The overall length of the bolt 9 is therefore much greater than the length of the first and second bolts 1c, 15. Because bolt 9 is connected fixedly together with reduction gear differential right side casing 6 behind will expanding portion 1b, motor casing 2, reduction gear differential left side casing 4, this kind of "sandwich" structural style links to each other together, increases the bearing capacity at motor position, has compensatied the not enough of motor aluminum hull bearing capacity among the prior art, avoids the influence of aluminum hull screw thread cover reliability problem to bearing capacity and connection face leakproofness in step.
A speed reducer 7 is installed in the speed reducer differential installation shell through an installation bearing, and a differential 8 which is correspondingly matched is also installed in the speed reducer differential installation shell on one side of the speed reducer 7. The speed reducer 7 is a double-stage speed reducer, and a first-stage driven gear 7a at one end of the speed reducer 7 is meshed with a first-stage driving gear 2b to form transmission matching connection. And a secondary driven gear 7b at the other end of the speed reducer 7 is in transmission connection and matching with a shell of a differential 8 through a connecting bolt 7 c.
One end of the right half shaft 5a is inserted from the shell side of the differential 8 and forms transmission connection matching with a bevel gear in the shell through a spline. The differential mechanism 8 shell on this side is also equipped with the first bearing 8a that distributes with right axle housing 5a is coaxial, first bearing 8a outer loop joint forms fixedly connected on the inner wall of right axle housing 5 open end.
The other end of the output shaft 13 is inserted from the other end of the differential 8 housing and forms a transmission connection fit with another bevel gear in the housing through a spline. The other end of the outer shell of the differential 8 is sleeved with a bearing 11 which is coaxially distributed with an output shaft 13, an outer ring of the bearing 11 is fixedly connected with an installation frame 11a, and one end of the installation frame 11a is fixedly connected with the left shell 4 of the speed reducer differential through an installation bolt 11 b. The first bearing 8a and the bearing 11 are radial bearings.
An observation hole 2a is arranged on the motor casing 2, a sealing plug 10 correspondingly matched with the observation hole 2c is arranged on the observation hole, and a sealing ring 10a is further sleeved on the sealing plug 10. Whether oil gets into inside the motor casing can be judged through the inspection hole 2c, for judging whether the oil seal piece damages the reliability and the cheap operability that has increased.
The working process is as follows:
the motor 3 drives the output shaft sleeve 2a to rotate when working, thereby driving the first-level driving gear 2b to rotate, further driving the first-level driven gear 7a of the speed reducer 7 to rotate, the second-level driven gear 7b at the other end of the speed reducer 7 transmits kinetic energy to the differential mechanism 8, the kinetic energy is transmitted to the right half shaft 5a and the output shaft 13 by the bevel gear in the differential mechanism respectively, the kinetic energy is transmitted to the left half shaft 1a by the output shaft 13, and the kinetic energy is finally transmitted to the wheel end part 14 at one end part of the left axle housing 1 and the right axle housing 5.
Claims (4)
1. The utility model provides an electricity drive axle assembly, it includes left axle housing (1) and right axle housing (5), is connected with motor casing (2) on left axle housing (1), is equipped with motor (3) in motor casing (2), wears to be equipped with left semi-axis (1 a) in left axle housing (1), wears to be equipped with right semi-axis (5 a), its characterized in that in right axle housing (5): a left shell (4) of a speed reducer differential extends out of the right end of the motor shell (2), a right shell (6) of the speed reducer differential extends out of one end of a right axle housing (5), the left shell (4) of the differential mechanism of the speed reducer is correspondingly connected and matched with the right shell (6) of the differential mechanism of the speed reducer, a speed reducer (7) and a differential (8) which are correspondingly matched are arranged in the left shell (4) and the right shell (6) of the differential of the speed reducer, one end of the differential (8) is in transmission fit with a right half shaft (5 a) in the right axle housing (5), an output shaft (13) of the motor (3) is inserted into the other end of the differential (8) and forms transmission fit with the differential, still wear to be equipped with bolt (9) on left axle housing (1), bolt (9) pass behind motor casing (2), reduction gear differential left side casing (4) and be connected fixedly with reduction gear differential right side casing (6).
2. An electric drive axle assembly as defined in claim 1, wherein: the motor casing (2) is provided with an observation hole (2 a), the observation hole (2 a) is provided with a sealing plug (10) which is correspondingly matched, and the sealing plug (10) is further sleeved with a sealing ring (10 a).
3. An electric drive axle assembly as defined in claim 1, wherein: output shaft (13) one end of motor (3) stretches out motor casing (2) and inserts in left axle housing (1), is equipped with spline groove (13 a) at its tip, left semi-axis (1 a) one end in left axle housing (1) inserts spline groove (13 a) and rather than the cooperation of being connected.
4. An electric drive axle assembly as defined in claim 1, wherein: differential mechanism (8) other end tip cover is equipped with bearing (11), bearing (11) and reduction gear differential mechanism left side casing (4) between be connected with mounting bracket (11 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010691528.3A CN111806157A (en) | 2020-07-17 | 2020-07-17 | Electric drive axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010691528.3A CN111806157A (en) | 2020-07-17 | 2020-07-17 | Electric drive axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111806157A true CN111806157A (en) | 2020-10-23 |
Family
ID=72864916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010691528.3A Pending CN111806157A (en) | 2020-07-17 | 2020-07-17 | Electric drive axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111806157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113283019A (en) * | 2021-07-26 | 2021-08-20 | 江铃汽车股份有限公司 | Electric drive rear axle analysis method based on transient response |
-
2020
- 2020-07-17 CN CN202010691528.3A patent/CN111806157A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113283019A (en) * | 2021-07-26 | 2021-08-20 | 江铃汽车股份有限公司 | Electric drive rear axle analysis method based on transient response |
| CN113283019B (en) * | 2021-07-26 | 2021-10-12 | 江铃汽车股份有限公司 | Electric drive rear axle analysis method based on transient response |
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