CN115352261A - Integrated two-gear electric drive axle assembly - Google Patents

Integrated two-gear electric drive axle assembly Download PDF

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Publication number
CN115352261A
CN115352261A CN202210985064.6A CN202210985064A CN115352261A CN 115352261 A CN115352261 A CN 115352261A CN 202210985064 A CN202210985064 A CN 202210985064A CN 115352261 A CN115352261 A CN 115352261A
Authority
CN
China
Prior art keywords
transmission
assembly
wheel
gear
stage
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
Application number
CN202210985064.6A
Other languages
Chinese (zh)
Inventor
高波丰
张龙
郭鸿瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Hande Axle Co Ltd
Original Assignee
Shaanxi Hande Axle Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shaanxi Hande Axle Co Ltd filed Critical Shaanxi Hande Axle Co Ltd
Priority to CN202210985064.6A priority Critical patent/CN115352261A/en
Publication of CN115352261A publication Critical patent/CN115352261A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • 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
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

The invention relates to an integrated two-gear electric drive axle assembly, which comprises a drive motor, a transmission assembly, a parking brake, a differential assembly and a wheel edge assembly, wherein the drive motor is connected with the transmission assembly through a transmission; 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 invention has the advantages of high integration of the motor, the transmission and the axle housing, light weight, high transmission efficiency and obvious economic advantage while meeting the dynamic requirement, 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.

Description

Integrated two-gear electric drive axle assembly
Technical Field
The invention relates to the technical field of new energy automobile manufacturing, in particular to an integrated two-gear electric drive axle assembly.
Technical Field
In the prior art, a motor, a transmission shaft and an electric vehicle axle transmission assembly are separately arranged, and the motor and a 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.
Disclosure of Invention
The invention aims to provide an integrated two-gear electric drive axle assembly aiming at the defects of the prior art, and solves the problems that the integration level is low, the dynamic requirement cannot be met, the transmission efficiency is low, the dynamic balance problem is difficult to solve, the NVH level and the reliability of the electric drive axle assembly are low, and the like.
The invention is realized by adopting the following technical scheme:
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.
As a further illustration of the invention, the transmission assembly includes a transmission housing to which the drive motor is coupled.
As a further illustration of the invention, the transmission assembly further comprises an input shaft, an intermediate primary shaft, an intermediate secondary shaft and an output shaft;
a primary driving gear is arranged on the input shaft; one end of the input shaft is connected with a driving motor;
a primary driven wheel, a first-gear secondary driving wheel and a second-gear secondary driving wheel are respectively arranged on the middle shaft, the primary driven wheel is meshed with the primary driving wheel, and a gear shifting synchronizer is arranged between the first-gear secondary driving wheel and the second-gear secondary driving wheel;
a first-gear second-stage driven wheel, a second-gear second-stage driven wheel and a third-stage driving wheel are respectively arranged on the middle second shaft, the first-gear second-stage driven wheel is meshed with the first-gear second-stage driving wheel, and the second-gear second-stage driven wheel is meshed with the second-gear second-stage driving wheel;
and the output shaft is respectively provided with a three-level driven wheel and a differential assembly, and the three-level driven wheel is meshed with the three-level driving wheel.
As a further illustration of the invention, the parking brake includes a brake disc disposed intermediate the drive motor and the transmission assembly, the brake disc coupled to the input shaft or the intermediate shaft of the transmission, and a caliper mounted to the transmission housing.
As a further explanation of the invention, the caliper is of a pull-wire or electronic type construction.
As a further explanation of the invention, the automobile chassis 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.
As a further explanation of the invention, 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.
As a further explanation of the invention, the three-stage driven gear is welded or screwed with or integrated with the differential assembly.
As a further explanation of the invention, the primary driving wheel, the primary driven wheel, the first-gear secondary driving wheel, the first-gear secondary driven wheel, the second-gear secondary driving wheel, the second-gear secondary driven wheel, the third-stage driving wheel and the third-stage driven wheel are all helical gears.
Compared with the prior art, the invention has the following beneficial technical effects:
the transmission is rigidly connected to the transmission shell through the driving motor, and the transmission, the differential 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 invention has the advantages of high integration of the driving motor, the transmission and the axle housing, light weight, high transmission efficiency and obvious economic advantage while meeting the dynamic requirement, 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.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the drive configuration 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 view 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 disk 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 two 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 and a third-stage 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 that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below 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, e.g., as meaning 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first 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 comprises a transmission and a transmission housing 114, the differential assembly 103 comprises a differential, and the wheel side assembly comprises a left wheel side 106 and a right wheel side 107; the left wheel side 106 contains a left half shaft 112, connected to the power take-off of the differential by splines; the right wheel side 107 includes a right axle shaft 113, with a left axle shaft 112 and a right axle shaft 113 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 specific embodiment of the invention, the driving motor 101 is a permanent magnet synchronous motor, the driving motor 101 is rigidly connected to the 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, the power input part of the transmission assembly 102 transmits the power to the power output part of the transmission through the 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 the differential, the differential transmits the power to the left wheel edge 106 and the right wheel edge 106 through the left half shaft 112 and the right half shaft 113, thereby driving the whole vehicle to move forward or backward;
in a specific embodiment of the present invention, as shown in fig. 2 and 3, the transmission assembly 102 includes a transmission housing 114, an input shaft a1, a first intermediate shaft a2, a second intermediate 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 first intermediate shaft left bearing b3, a first intermediate shaft right bearing b4, a second intermediate shaft left bearing b5, and a second intermediate 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; the first-gear second-stage driving wheel Z3, the first-gear second-stage driven wheel Z4, the second-gear second-stage driving wheel Z5, the second-gear second-stage driven wheel Z6, the middle shaft a2 and the middle shaft a3 form a speed change part of the speed changer assembly 102; the three-level driving wheel Z7 and the three-level 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 a1 is supported by an input shaft left bearing b1 and an input shaft right bearing b 2;
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-stage driven gear Z8 is fixedly connected with the differential assembly through bolts or welded, or the three-stage driven gear Z8 is integrated with the differential assembly shell;
in a specific embodiment of the present invention, as shown in fig. 2 and 3, the parking brake 104 employs a central 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 may 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 obtains 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 a specific embodiment of the present invention, 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 invention: NVH (Noise, vibration, harshness, which refers to Noise, vibration and Harshness); this is a comprehensive measure of the quality of a vehicle's manufacture, which gives the vehicle user the most immediate and superficial experience; the NVH problem of vehicles is one of the concerns of various large vehicle manufacturing enterprises and component enterprises in the international automotive industry.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

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 connected with the left wheel edge and the right wheel edge respectively.
2. The integrated two-speed electric drive axle assembly according to claim 1, wherein the transmission assembly includes a transmission housing, and wherein the drive motor is connected to the transmission housing.
3. The integrated two-speed electric drive axle assembly according to claim 1, wherein the transmission assembly further comprises an input shaft, an intermediate primary shaft, an intermediate secondary shaft, and an output shaft;
a primary driving gear 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-gear 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-gear second-stage driving wheel and the second-stage driving wheel;
a first-gear second-stage driven wheel, a second-gear second-stage driven wheel and a third-stage driving wheel are respectively arranged on the middle second shaft, the first-gear second-stage driven wheel is meshed with the first-gear second-stage driving wheel, and the second-gear second-stage driven wheel is meshed with the second-gear second-stage 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.
4. The integrated two speed electric drive axle assembly of claim 3 wherein the parking brake includes a brake disc disposed intermediate the drive motor and the transmission assembly, the brake disc being coupled to the input shaft or the intermediate shaft of the transmission, and a caliper mounted to the transmission housing.
5. The integrated two-speed electric drive axle assembly according to claim 4, wherein said caliper is of a pull-cord or electronic type construction.
6. The integrated two-speed electric drive axle assembly of claim 2, 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 bolted to the transmission housing (12).
7. 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.
8. The integrated two-speed electric drive axle assembly according to claim 3, wherein the three-stage driven gear is welded or bolted or integrated with the differential assembly.
9. The integrated two-gear electric drive axle assembly according to claim 3, 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 all bevel gears.
CN202210985064.6A 2022-08-17 2022-08-17 Integrated two-gear electric drive axle assembly Pending CN115352261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210985064.6A CN115352261A (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
CN202210985064.6A CN115352261A (en) 2022-08-17 2022-08-17 Integrated two-gear electric drive axle assembly

Publications (1)

Publication Number Publication Date
CN115352261A true CN115352261A (en) 2022-11-18

Family

ID=84003509

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210985064.6A Pending CN115352261A (en) 2022-08-17 2022-08-17 Integrated two-gear electric drive axle assembly

Country Status (1)

Country Link
CN (1) CN115352261A (en)

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