CN218343239U - Integrated two-gear electric drive axle assembly - Google Patents
Integrated two-gear electric drive axle assembly Download PDFInfo
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- CN218343239U CN218343239U CN202222161154.1U CN202222161154U CN218343239U CN 218343239 U CN218343239 U CN 218343239U CN 202222161154 U CN202222161154 U CN 202222161154U CN 218343239 U CN218343239 U CN 218343239U
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Abstract
The utility model relates to an integrated two-gear electric drive axle assembly, which comprises a drive motor, a transmission assembly, a parking brake, a differential mechanism assembly and a wheel edge assembly; the output end of the driving motor is connected with the input end of the speed changer, the output end of the speed changer is connected with the input end of the differential mechanism, and the output end of the differential mechanism is respectively connected with the left wheel edge and the right wheel edge; the utility model discloses a high integration of motor, derailleur and axle housing, light in weight, when satisfying dynamic demand, transmission efficiency is high, and the economic nature advantage is obvious, and disc brake's application simultaneously can effectively solve the dynamic balance problem under the high rotational speed of drum brake, all has obvious advantage in the aspect of whole bridge NVH and reliability.
Description
Technical Field
The utility model relates to a new energy automobile makes technical field, especially relates to an integrated form two keeps off electric drive axle assembly.
Background
In the prior art, a motor, a transmission shaft and an electric vehicle axle transmission assembly are separately arranged, and the motor and the reducer assembly are integrally arranged, wherein the former has long transmission chain, low efficiency and difficult arrangement, and the latter has single speed ratio and is difficult to solve the problem of unified economy and dynamic property;
meanwhile, the parking brake is difficult to arrange on the integrated electric drive axle, at present, drum brakes are mostly adopted, the problem of dynamic balance is difficult to solve, and the NVH level and the reliability of the electric drive assembly are low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two fender electric drive axle assemblies of integrated form to prior art's not enough, it is low to have solved the integrated level, can't satisfy dynamic demand, and transmission efficiency is low, and the dynamic balance problem is difficult to solve, the lower scheduling problem of NVH level and reliability of electric drive assembly.
The utility model discloses an adopt following technical scheme to realize:
an integrated two-gear electric drive axle assembly comprises a drive motor, a transmission assembly, a parking brake, a differential assembly and a wheel side assembly;
the transmission assembly comprises a transmission, and the output end of the driving motor is connected with the input part of the transmission;
the differential assembly comprises a differential, and the transmission output is connected with the differential input;
the wheel edge assembly comprises a left wheel edge and a right wheel edge, and the output part of the differential is connected with the left wheel edge and the right wheel edge respectively.
Preferably, the transmission assembly includes a transmission housing, and the driving motor is connected to the transmission housing.
Preferably, the transmission assembly further comprises an input shaft, an intermediate shaft and an output shaft;
a primary driving wheel is arranged on the input shaft; one end of the input shaft is connected with a driving motor;
a first-stage driven wheel, a first-stage second-stage driving wheel and a second-stage driving wheel are respectively arranged on the middle shaft, the first-stage driven wheel is meshed with the first-stage driving wheel, and a gear shifting synchronizer is arranged between the first-stage second-stage driving wheel and the second-stage driving wheel;
a first-gear secondary driven wheel, a second-gear secondary driven wheel and a third-stage driving wheel are respectively arranged on the middle second shaft, the first-gear secondary driven wheel is meshed with the first-gear secondary driving wheel, and the second-gear secondary driven wheel is meshed with the second-gear secondary driving wheel;
and a third-stage driven wheel and a differential assembly are respectively arranged on the output shaft, and the third-stage driven wheel is meshed with the third-stage driving wheel.
Preferably, the parking brake includes a brake disc disposed between the driving motor and the transmission assembly, the brake disc being connected to the input shaft or the intermediate shaft of the transmission, and a caliper mounted on the transmission housing.
Preferably, the caliper is of a stay wire type or an electronic type structure.
Preferably, the automobile axle housing further comprises an axle housing assembly, wherein the axle housing assembly comprises an axle housing and a rear cover, and the axle housing and the rear cover are welded or screwed; the axle housing assembly is connected with the transmission housing through bolts.
Preferably, a left half shaft is connected between the left wheel edge and the differential, and a right half shaft is connected between the right wheel edge and the differential.
Preferably, the three-stage driven wheel is welded or screwed with or integrated with the differential assembly.
Preferably, the first-stage driving wheel, the first-stage driven wheel, the first-stage second-stage driving wheel, the first-stage second-stage driven wheel, the second-stage driving wheel, the second-stage driven wheel, the third-stage driving wheel and the third-stage driven wheel are all helical gears.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model is rigidly connected to the transmission shell through the driving motor, and the transmission, the differential mechanism and the parking brake are all supported by the transmission shell; the parking brake comprises calipers and a brake disc, the brake disc is connected with the input shaft of the transmission, and the calipers are fixed on the transmission shell; the power input part of the differential is connected with an output gear of the transmission, and the power output part of the differential is connected with the left half shaft and the right half shaft; the axle housing assembly comprises an axle housing and a rear cover, the axle housing and the rear cover are connected together, and a space for accommodating parts such as a transmission, a differential mechanism and a half shaft is defined by the axle housing and the transmission housing; the transmission assembly is connected to the axle housing assembly through a bolt; the utility model discloses a high integration of driving motor, derailleur and axle housing, light in weight, when satisfying dynamic property demand, transmission efficiency is high, and the economic nature advantage is obvious, and disc brake's application can effectively solve the dynamic balance problem under the high rotational speed of drum brake simultaneously, all has obvious advantage in the aspect of whole bridge NVH and reliability.
Drawings
The utility model is further described with the following drawings:
fig. 1 is a schematic view of a transmission structure of the electric drive axle assembly of the present invention;
FIG. 2 is a schematic layout of the transmission assembly of the present invention;
fig. 3 is a schematic diagram of the internal structure of the electric drive axle assembly of the present invention.
Description of the reference numerals
A drive motor 101; a transmission assembly 102; a differential assembly 103; parking brake 104, axle housing assembly 105, left wheel 106; a right wheel rim 107; a brake disc 108; a caliper axle housing 110; a rear cover 111, a left half shaft 112; a right half shaft 113; a transmission housing 114;
an input shaft a1, a middle shaft a2 and a middle shaft a3;
a primary driving wheel Z1, a primary driven wheel Z2, a first-gear secondary driving wheel Z3, a first-gear secondary driven wheel Z4, a second-gear secondary driving wheel Z5, a second-gear secondary driven wheel Z6, a third-level driving wheel Z7 and a third-level driven wheel Z8;
the left bearing b1 of the input shaft, the right bearing b2 of the input shaft, the left bearing b3 of the middle shaft, the right bearing b4 of the middle shaft, the left bearing b5 of the middle two shafts, the right bearing b6 of the middle two shafts, the left bearing b7 of the differential mechanism and the right bearing b8 of the differential mechanism.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment is as follows:
as shown in fig. 1-3, an integrated two-gear electric drive axle assembly includes a drive motor 101, a transmission assembly 102, a differential assembly 103, a parking brake 104, an axle housing assembly 105, and a wheel-side assembly; the transmission assembly 102 includes a transmission and transmission housing 114, the differential assembly 103 includes a differential, the wheel-side assembly includes a left wheel side 106 and a right wheel side 107; the left wheel side 106 comprises a left half shaft 112 connected with the power output part of the differential through splines; the right wheel side 107 includes a right axle shaft 113, and a left axle shaft 112 and a right axle shaft 113 are contained within the axle housing assembly 105; the axle housing assembly 105 comprises an axle housing 110 and a rear cover 111, the axle housing 110 and the rear cover 111 are connected together through welding seams or bolts, and the axle housing assembly 105 and a transmission housing 114 are connected through bolts to jointly define a closed space for accommodating a gear train of the transmission assembly 102, the differential assembly 103, a left half shaft 112 and a right half shaft 113;
in the embodiment, the driving motor 101 is a permanent magnet synchronous motor, the driving motor 101 is rigidly connected to a transmission housing 114, the transmission assembly 102, the differential assembly 103 and the parking brake 104 are all supported by the transmission housing 114, after receiving the power of the driving motor 101, a power input part of the transmission assembly 102 transmits the power to a power output part of the transmission through speed reduction and torque increase of the transmission, the power output part of the transmission is connected with the power input part of the differential, and transmits the power to the power output part of the differential through differential, and the differential transmits the power to a left wheel edge 106 and a right wheel edge 106 through a left half shaft 112 and a right half shaft 113 respectively, so as to drive the whole vehicle to move forward or backward;
in this embodiment, as shown in fig. 2 and 3, the transmission assembly 102 includes a transmission housing 114, an input shaft a1, a middle first shaft a2, a middle second shaft a3, a first-stage driving wheel Z1, a first-stage driven wheel Z2, a first-stage second-stage driving wheel Z3, a first-stage second-stage driven wheel Z4, a second-stage driving wheel Z5, a second-stage driven wheel Z6, a third-stage driving wheel Z7, a third-stage driven wheel Z8, an input shaft left bearing b1, an input shaft right bearing b2, a middle first shaft left bearing b3, a middle first shaft right bearing b4, a middle second shaft left bearing b5, and a middle second shaft right bearing b6; the transmission input shaft a1, the primary driving wheel Z1 and the primary driven wheel Z2 form a power input part of the transmission assembly 102; a first-gear secondary driving wheel Z3, a first-gear secondary driven wheel Z4, a second-gear secondary driving wheel Z5, a second-gear secondary driven wheel Z6, a middle first shaft a2 and a middle second shaft a3 form a speed change part of the speed changer assembly 102; the three-stage driving wheel Z7 and the three-stage driven wheel Z8 form a power output part of the transmission assembly 102;
the transmission input shaft a1 is coaxial with the output shaft of the driving motor 101, a segmented structure can be adopted, the transmission input shaft a1 is connected with the output shaft of the driving motor 101 through the matching of a spline or a coupling, and the output shaft of the driving motor 101 and the transmission input shaft a1 can be made into an integrated structure;
a primary driving wheel Z1 is fixed on the transmission input shaft a1, namely the primary driving wheel Z1 synchronously rotates along with the transmission input shaft a1, and the input shaft left bearing b1 and the input shaft right bearing b2 support the input shaft a1;
a first-stage driven wheel Z2, a first-stage second-stage driving wheel Z3, a second-stage driving wheel Z5 and a shifting synchronizer H are fixed on a middle shaft a2 of the transmission, wherein the first-stage driven wheel Z2 rotates synchronously with the middle shaft a2, the first-stage second-stage driving wheel Z3 and the second-stage driving wheel Z5 are connected with the middle shaft a2 through needle bearings, when the shifting synchronizer H is positioned on the right side, the first-stage second-stage driving wheel Z3 is fixedly connected with the middle shaft a2 and rotates synchronously, when the shifting synchronizer H is positioned on the left side, the second-stage driving wheel Z5 is fixedly connected with the middle shaft a2 and rotates synchronously, when the shifting synchronizer H is positioned in the middle, the whole vehicle is in a neutral gear, the shifting synchronizer H realizes gear switching, and a left bearing b3 of the middle shaft and a right bearing b4 of the middle shaft provide support for the middle shaft a 2; the speed ratio step difference of the high-speed gear and the low-speed gear exceeds 2, when the whole vehicle climbs a large slope, the first-gear second-stage driving wheel Z3 and the first-gear second-stage driven wheel Z4 can be selected to be meshed through the gear shifting synchronizer H, the power performance of the whole vehicle is improved, when the road condition is good and the slope is small, the second-gear second-stage driving wheel Z5 and the second-gear second-stage driven wheel Z6 can be selected to be meshed through the gear shifting synchronizer H, and the economy of the whole vehicle is improved;
a first-gear second-stage driven wheel Z4, a second-gear second-stage driven wheel Z6 and a third-stage driving wheel Z7 are fixed on the middle second shaft a3 of the transmission, namely the first-gear second-stage driven wheel Z4, the second-gear second-stage driven wheel Z6 and the third-stage driving wheel Z7 synchronously rotate along with the middle second shaft a3, and a middle second shaft left bearing b5 and a middle second shaft right bearing b6 provide support for the middle second shaft a3;
the three-stage driven wheel Z8 is fixed on the differential case a4, namely the three-stage driven wheel Z8 rotates synchronously along with the differential case a 4; the three-level driven wheel Z8 is connected with the differential assembly through bolts or welded and fixed, or the three-level driven wheel Z8 is integrated with the differential assembly shell;
in this embodiment, as shown in fig. 2 and 3, the parking brake 104 employs a centrally integrated disc brake, the parking brake 104 includes a caliper 109 and a brake disc 108, the caliper 109 is mounted on the transmission housing 114, the caliper 109 may employ a pull-wire caliper or an electronic caliper, the cylinder diameter and the brake disc size can be adjusted according to the braking force requirement, the brake disc 108 is in splined connection with the transmission input shaft a1, the braking torque is small, when the caliper 109 receives a braking instruction, the brake disc 108 is clamped, the brake disc 108 is decelerated or stopped to rotate by the friction force, and the input shaft a1 is braked, so that the entire vehicle is decelerated or stopped; the parking brake 104 has obvious advantages in appearance and weight, and meanwhile, the application of the disc brake can effectively solve the dynamic balance problem of the drum brake at high rotating speed, and has obvious advantages in the aspects of whole axle NVH and reliability;
in this embodiment, the brake disc 108 is an integral structure, and is connected to the transmission input shaft a1 through an internal spline to brake the input shaft a1; or the brake disc 108 may be arranged on the middle two-axis a3 to brake the middle two-axis a 3.
Description of the drawings: NVH (Noise, vibration, harshness, which refers to Noise, vibration and Harshness); this is a comprehensive problem in measuring the quality of the vehicle manufacture, which gives the vehicle user the most direct and superficial experience; the NVH problem of vehicles is one of the concerns of large vehicle manufacturing enterprises and part enterprises in the international automobile industry.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. An integrated two-gear electric drive axle assembly is characterized by comprising a drive motor, a transmission assembly, a parking brake, a differential assembly and a wheel edge assembly; the transmission assembly comprises a transmission, and the output end of the driving motor is connected with the input part of the transmission; the differential assembly comprises a differential, and the transmission output is connected with the differential input; the wheel edge assembly comprises a left wheel edge and a right wheel edge, and the output part of the differential is respectively connected with the left wheel edge and the right wheel edge;
the transmission assembly comprises a transmission shell, and the driving motor is connected to the transmission shell;
the transmission assembly further comprises an input shaft, a middle first shaft, a middle second shaft and an output shaft; a primary driving wheel is arranged on the input shaft; one end of the input shaft is connected with a driving motor; a first-stage driven wheel, a first-stage second-stage driving wheel and a second-stage driving wheel are respectively arranged on the middle shaft, the first-stage driven wheel is meshed with the first-stage driving wheel, and a gear shifting synchronizer is arranged between the first-stage second-stage driving wheel and the second-stage driving wheel; a first-gear secondary driven wheel, a second-gear secondary driven wheel and a third-stage driving wheel are respectively arranged on the middle second shaft, the first-gear secondary driven wheel is meshed with the first-gear secondary driving wheel, and the second-gear secondary driven wheel is meshed with the second-gear secondary driving wheel; the output shaft is respectively provided with a three-stage driven wheel and a differential assembly, and the three-stage driven wheel is meshed with a three-stage driving wheel;
the parking brake comprises a brake disc and calipers, the parking brake is arranged between the driving motor and the transmission assembly, the brake disc is connected with an input shaft or an intermediate shaft of the transmission, and the calipers are installed on a transmission shell.
2. The integrated two-speed electric drive axle assembly according to claim 1, wherein said caliper is of a pull-cord or electronic type construction.
3. The integrated two-speed electric drive axle assembly of claim 1, further comprising an axle housing assembly comprising an axle housing and an end cap, wherein the axle housing and the end cap are welded or bolted; the axle housing assembly is connected with the transmission housing through bolts.
4. The integrated two-speed electric drive axle assembly according to claim 1, wherein a left half shaft is connected between the left wheel side and the differential, and a right half shaft is connected between the right wheel side and the differential.
5. The integrated two-speed electric drive axle assembly according to claim 1, wherein the driven tertiary wheel is welded or bolted or integrated with the differential assembly.
6. The integrated two-gear electric drive axle assembly according to claim 1, wherein the primary driving wheel, the primary driven wheel, the primary secondary driving wheel, the primary secondary driven wheel, the secondary driving wheel, the secondary driven wheel, the tertiary driving wheel and the tertiary driven wheel are helical teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161154.1U CN218343239U (en) | 2022-08-17 | 2022-08-17 | Integrated two-gear electric drive axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161154.1U CN218343239U (en) | 2022-08-17 | 2022-08-17 | Integrated two-gear electric drive axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218343239U true CN218343239U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222161154.1U Active CN218343239U (en) | 2022-08-17 | 2022-08-17 | Integrated two-gear electric drive axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218343239U (en) |
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2022
- 2022-08-17 CN CN202222161154.1U patent/CN218343239U/en active Active
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