Dual-Motor Rear Drivetrain Locking for Electric Work Vehicles
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Solution Overview
Problem
Existing electric work vehicles lack efficient independent wheel control and locking mechanisms, which can lead to instability and inefficiency in various terrains and operations.
Innovation Solution
The vehicle incorporates dual rear motors connected to independent gearings that can rotate independently, with a locking assembly to simultaneously lock both gearings, ensuring stable operation and traction control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If independent wheel control is implemented with dual motors and separate gearings, then maneuverability and terrain adaptability are improved, but device complexity increases
Solution Approach 1:
The drivetrain is segmented into two independent motor-gearing-wheel units, one for each rear wheel. Each motor can operate independently, allowing the vehicle to adapt to different terrain conditions by controlling each wheel's speed and torque separately, thus improving terrain adaptability while managing complexity through modular design
Solution Approach 2:
The system implements dynamic control of each wheel independently through separate motors and gearings. The locking assembly can dynamically engage or disengage to lock both gearings simultaneously when needed, providing adaptive response to varying operational conditions and terrain requirements
2Stability of the object's composition
If a locking assembly is added to simultaneously lock both gearings, then stability during stationary conditions is improved, but device complexity increases
Solution Approach 1:
The locking assembly merges the locking function for both gearings into a single integrated mechanism. This allows simultaneous locking of both rear wheels through one assembly, improving stationary stability while minimizing the increase in device complexity by combining functions rather than adding separate locking mechanisms for each wheel
3Ease of operation
If dual motors with independent gearings are used, then wheel control precision is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The independent motor-gearing-wheel units are designed as separate modular segments that can be manufactured independently and then assembled. This segmentation allows for standardized production of each unit, improving wheel control precision through independent adjustment while facilitating easier manufacturing and assembly processes
Data Source
AI summary
An electric work vehicle includes a rear housing, a first motor to drive a first rear wheel, the first motor being supported by the rear housing, a second motor to drive a second rear wheel, the second motor being supported by the rear housing, and a locking assembly. The first motor is connected to a first gearing to drive the first rear wheel. The second motor is connected to a second gearing to drive the second rear wheel. The first gearing and the second gearing are operable to rotate independently of each other. The locking assembly is operable to simultaneously lock both of the first gearing and the second gearing from being able to rotate.