Wheel-side electric drive axle mechanical differential mechanism

A mechanical, differential technology, applied in control devices, transportation and packaging, vehicle components, etc., can solve the problems of unilateral weight of electric drive axles, unreasonable structural design, poor driving stability, etc., to achieve a wide range of applications. , The effect of ingenious structural design and strong practicability

Pending Publication Date: 2021-03-16
厦门金龙汽车新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a wheel-side electric drive axle mechanical differential, the main purpose of which is to solve the problems of the existing mechanical differential, such as heavy weight on one side of the electric drive axle, poor driving stability and waste of space, etc. due to unreasonable structural design. question

Method used

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  • Wheel-side electric drive axle mechanical differential mechanism
  • Wheel-side electric drive axle mechanical differential mechanism
  • Wheel-side electric drive axle mechanical differential mechanism

Examples

Experimental program
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Effect test

Embodiment 1

[0021] refer to figure 1 , a wheel-side electric drive axle mechanical differential, including electric drive axle 4 and motors 1 arranged on the left and right sides of electric drive axle 4, planetary transmission mechanism and differential mechanism. The motor 1 is drivingly connected to the planetary transmission mechanism, and outputs power to the wheels through the planetary transmission mechanism. The differential mechanism includes a main differential gear 31 and an auxiliary differential gear 32. The main differential gear 31 is drive-connected to the planetary transmission mechanism and meshes with the auxiliary differential gear 32; it also includes a first differential shaft 33 and an electric drive The right differential gear 34 on the right side of the bridge, the right differential gear 34 meshes with the auxiliary differential gear 32 located on the right side of the electric drive axle 4, and is connected to the left differential gear 32 located on the left si...

Embodiment 2

[0027] refer to figure 1 and figure 2 , different from Embodiment 1, Embodiment 2 also includes a second differential shaft 35 and a left differential gear 36 located on the left side of the electric drive axle 4, and the left differential gear 36 and the secondary differential gear located on the left side of the electric drive axle 4 The speed gears 32 mesh with each other, and are connected to the auxiliary differential gear 32 on the right side of the electric drive axle through the second differential shaft 35 . Designing two differential shafts to transmit torque can ensure the stability and reliability of the differential structure, even if one of them is broken during use, it can still operate normally.

Embodiment 3

[0029] refer to figure 2 and image 3 , different from the second embodiment, the third embodiment does not set the second planetary row, but directly sets the mounting part 20 for mounting the wheel at the end of the output shaft, so that the differential can be adapted to a single tire vehicle.

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Abstract

The invention discloses a wheel-side electric drive axle mechanical differential mechanism which comprises an electric drive axle, motors arranged on the left side and the right side of the electric drive axle, a planetary transmission mechanism and a differential mechanism. The motors are in driving connection with the planetary transmission mechanism and output power to the wheels through the planetary transmission mechanism; the differential mechanism comprises a main differential gear and an auxiliary differential gear, and the main differential gear is in transmission connection with theplanetary transmission mechanism and meshed with the auxiliary differential gear; the differential mechanism further comprises a first differential shaft and a right differential gear, the right differential gear is meshed with the auxiliary differential gear located on the right side of the electric drive axle and is in transmission connection with the auxiliary differential gear located on the left side of the electric drive axle through the first differential shaft, and therefore left-right differential adjustment is achieved. The wheel-side electric drive axle mechanical differential mechanism is not affected by the rotating speed and torque difference of the motors on the two sides in use, the rotating speed difference value of the left side and the right side can be automatically adjusted, and therefore the mechanical differential of the wheel-side electric drive axle is achieved under the condition that the channel width is not affected, and the low-floor advantage of the wheel-side electric drive axle is fully reserved.

Description

technical field [0001] The invention relates to the technical field of differentials, in particular to a wheel-side electric drive axle mechanical differential. Background technique [0002] At present, there are two types of differentials on wheel-side electric axles on the market: electronic differentials and mechanical differentials. Among them, electronic differentials are more difficult to control and cannot achieve precise differential control, which may easily lead to tire wear. Compared with the electronic differential, the mechanical differential is more reliable and can effectively reduce tire wear, which has certain advantages. However, due to unreasonable structural design, the existing differential electric drive axle usually installs the motor on one side, and then distributes the power to both sides through the traditional differential structure. It will affect the driving stability of the vehicle, and will lead to a waste of unilateral space, weakening the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/08B60K17/16
CPCB60K17/08B60K17/16
Inventor 张磊官发霖叶伟宏陈晓冰
Owner 厦门金龙汽车新能源科技有限公司
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