CN-121989588-A - Electric drive axle and triaxial car

CN121989588ACN 121989588 ACN121989588 ACN 121989588ACN-121989588-A

Abstract

The application discloses an electric drive axle and a three-axle vehicle. The drive axle body is a conventional non-through drive axle and comprises a main speed reducer and a first connecting flange, the transmission module comprises a shell and a transmission mechanism, the shell comprises a first end and a second end which are oppositely arranged, the first end is fixedly connected with a motor, the second end is provided with a second connecting flange, and the second connecting flange is connected with the first connecting flange so that the second end is fixedly connected with the drive axle body. Through utilizing the first connection flange that is used for being connected with the main reducer lid on the ripe conventional non-through transaxle as the installation basis, realize being connected of motor and main reducer input, need not to change conventional non-through transaxle's transmission part, can enough satisfy the independent power input demand of electric transaxle, can satisfy the heavy load demand of high ton level triaxial electric drive car again.

Inventors

WANG ZHUOZHOU
YAO XIBIN
GUO JUN
Lu Yuer
ZHANG KAILIN
Ji Pipu

Assignees

福建宏大时代新能源科技有限公司
云南华联锌铟股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260330

Claims (10)

1. An electric drive axle, comprising: a motor; The drive axle body is a non-through drive axle and comprises a main speed reducer and a first connecting flange; The transmission module comprises a shell and a transmission mechanism, wherein the shell comprises a first end and a second end which are oppositely arranged, the first end is fixedly connected with the motor, the second end is provided with a second connecting flange, and the second connecting flange is connected with the first connecting flange so that the second end is fixedly connected with the drive axle body; the output end of the motor is connected with the input end of the transmission mechanism, and the output end of the transmission mechanism is connected with the input end of the main speed reducer.
2. The electric drive axle of claim 1, wherein the transmission mechanism includes a transmission driving gear and a transmission driven gear, the transmission driving gear being coaxially disposed with the motor and fixedly connected to an output of the motor, the transmission driven gear engaging the transmission driving gear to transmit torque output by the motor to an input of the final drive.
3. The electric transaxle of claim 2 wherein the final drive comprises a first bevel gear formed as an input to the final drive and fixedly connected to and coaxially disposed with the driven drive gear, the first bevel gear engaging the second bevel gear, the second bevel gear for transmitting power to the wheel.
4. The electric drive axle of claim 1, wherein the transmission module further comprises a mounting plate disposed on an inner wall of the housing, the transmission and the final drive being mounted to the mounting plate.
5. The electric drive axle of claim 4 wherein the mounting plate includes a first side adjacent the first end and a second side adjacent the second end, the first side defining a first cavity with the inner wall of the housing to receive the drive mechanism, the second side defining a second cavity with the inner wall of the housing to receive the final drive.
6. The electric drive axle of claim 1, wherein the first end of the housing is provided with a third connection flange and the electric machine is provided with a fourth connection flange fixedly connected to the third connection flange to connect the housing and the electric machine.
7. The electric drive axle of claim 1, further comprising a bracket, the motor being fixedly connected to the bracket, the bracket being fixedly connected to the drive axle body.
8. The electric drive axle of claim 7, wherein the bracket comprises a first frame bar and a second frame bar, the first frame bar and the second frame bar are disposed on two opposite sides of the motor, one end of the first frame bar and one end of the second frame bar are both fixed on the drive axle body, the other end of the first frame bar is fixedly connected with the other end of the second frame bar and forms a connecting portion, and the connecting portion is used for connecting a frame.
9. A three axle vehicle comprising an electric drive axle as claimed in any one of claims 1 to 8.
10. The three-axle vehicle of claim 9, further comprising a frame and a driven axle, both of which are fixedly connected to the frame, the driven axles forming a front axle, the electric drive axles being provided in two groups and forming a center axle and a rear axle, respectively.

Description

Electric drive axle and triaxial car Technical Field The application relates to the technical field of electric drive axles, in particular to an electric drive axle and a triaxial car. Background With the development of new energy mining vehicles, the large-tonnage electric mining dump truck gradually replaces the traditional fuel vehicle type due to the advantages of environmental protection and energy consumption. For a three-shaft electric mining dump truck with large tonnage load, a driving axle is used as a key bearing and transmission part of the three-shaft electric mining dump truck, and the bearing capacity, reliability and cost of the driving axle directly determine the transportation efficiency, transportation safety and cost of the whole truck. However, in the current industry, the drive axle is mainly designed by adopting a through-axle design, the through-axle design is the optimal choice of the traditional fuel vehicle era, but the application of the drive axle to the three-axle electric mining dump truck has obvious short plates, the existing through-axle is difficult to competence facing the large-ton dump truck, the overload risk exists, and the purchase cost of the large-ton through-axle is high; If the non-through bridge design is adopted, the middle bridge and the rear axle of the three-axle electric mining dump truck are respectively provided with an independent motor and a transmission shaft, so that the design greatly enlarges the wheelbase between the middle bridge and the rear axle, influences the flexibility of the vehicle, accelerates the abrasion of tires, and in addition, the arrangement of the motor and the transmission shaft on the middle bridge and the rear axle respectively influences the arrangement of other parts on the frame, and lacks the space for arranging the motor and the transmission shaft. Disclosure of Invention The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an electric drive axle which can meet the requirement of independent power input of the drive axle and the requirement of heavy load of a large-ton three-axle vehicle type on the premise of keeping a conventional non-through axle core transmission part. The application further provides a triaxial vehicle. The electric drive axle comprises a motor, a drive axle body, a transmission module and a transmission module, wherein the drive axle body is a non-through drive axle, the drive axle body comprises a main speed reducer and a first connecting flange, the transmission module comprises a shell and a transmission mechanism, the shell comprises a first end and a second end which are oppositely arranged, the first end is fixedly connected with the motor, the second end is provided with a second connecting flange, the second connecting flange is connected with the first connecting flange so that the second end is fixedly connected with the drive axle body, an output end of the motor is connected with an input end of the transmission mechanism, and an output end of the transmission mechanism is connected with an input end of the main speed reducer. According to an embodiment of an aspect of the present application, the transmission mechanism includes a transmission driving gear and a transmission driven gear, the transmission driving gear is coaxially disposed with the motor and fixedly connected to an output end of the motor, and the transmission driven gear engages the transmission driving gear to transmit torque output by the motor to an input end of the final drive. According to an embodiment of one aspect of the application, the main speed reducer comprises a first bevel gear and a second bevel gear, wherein the first bevel gear is formed as an input end of the main speed reducer, is fixedly connected with the driving driven gear and is coaxially arranged, the first bevel gear is meshed with the second bevel gear, and the second bevel gear is used for transmitting power to the wheel rim. According to an embodiment of an aspect of the application, the transmission module further comprises a mounting plate, the mounting plate is arranged on the inner wall of the housing, and the transmission mechanism and the final drive are both mounted on the mounting plate. According to an embodiment of one aspect of the application, the mounting plate comprises a first side surface close to the first end and a second side surface close to the second end, wherein the first side surface and the inner wall of the shell enclose a first cavity for accommodating the transmission mechanism, and the second side surface and the inner wall of the shell enclose a second cavity for accommodating the main reducer. According to an embodiment of an aspect of the application, the first end of the housing is provided with a third connection flange and the motor is provided with a fourth connection flange fixedly connected to the third connection flang