Six-Wheeled Active Caster Layout for Omni-Directional Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional six-wheeled vehicles face difficulties in moving omni-directionally and are prone to balance loss.
Innovation Solution
A six-wheeled vehicle design featuring middle wheels that act as active casters, rotating about a steering axle and vehicle axle, with a drive mechanism allowing independent control of wheel rotation and steering, and a suspension system for enhanced stability and ground contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional six-wheeled vehicle configuration is used, then structural simplicity is maintained, but omni-directional movement capability is lost
Solution Approach 1:
The vehicle divides its six wheels into three independent groups (front, middle, rear), with each group's wheels connected to independent steering axles. This segmentation allows each wheel pair to be controlled independently, enabling complex movement patterns including omni-directional movement while maintaining manageable structural complexity through modular design
Solution Approach 2:
The middle wheels are configured as active casters that can dynamically adjust their steering angle about a vertical steering axle while simultaneously rotating about the vehicle axle. This dynamic capability allows the wheels to adapt their orientation in real-time, providing the versatility needed for omni-directional movement
2Adaptability or versatility
If middle wheels are configured as active casters with independent steering and rotation, then omni-directional movement is enabled, but control system complexity increases
Solution Approach 1:
The middle wheels serve multiple functions simultaneously: they act as both driven wheels (rotating about the vehicle axle) and steering elements (turning about the vertical steering axle). This multi-functionality reduces the need for separate steering mechanisms for each wheel, simplifying the overall control system while maintaining omni-directional capability
Solution Approach 2:
The active caster configuration allows the middle wheels to self-adjust their steering angle based on the vehicle's movement requirements. The wheels automatically orient themselves to provide optimal traction and steering, reducing the complexity of external control systems while maintaining high adaptability
3Stability of the object's composition
If suspension system is added for stability, then balance control is improved, but device complexity increases
Solution Approach 1:
The suspension system is integrated with the existing wheel and axle structures, combining shock absorption and stability functions with the steering and drive mechanisms. This merging approach allows the suspension to provide balance control without requiring completely separate structural components, thereby limiting the increase in device complexity
Data Source
AI summary
To realize a six-wheeled vehicle that can move omni-directionally. A six-wheeled vehicle according to an embodiment of the present disclosure includes: a main body; middle wheels arranged on the left and right sides of the main body; front wheels arranged in front of the middle wheels; rear wheels arranged behind the middle wheels; and a drive mechanism configured to cause each of the middle wheels to turn about a steering axle extending in a vertical direction and to each of the middle wheels to rotate about a vehicle axle.