Omnidirectional Wheel Chassis with Universal Coupling for Vibration Control
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Solution Overview
Problem
Omnidirectional moving devices with point contact between a sphere and the travel path experience inadequate grip, leading to reduced propulsive force and increased vibration transmission, resulting in poor ride comfort and noise.
Innovation Solution
The implementation of a vehicle chassis with multiple omnidirectional wheels and a universal coupling that allows the vehicle body to change attitude relative to the chassis, combined with an attitude stabilizing system that maintains stability, increases the contact surface area and reduces vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sphere is used for omnidirectional movement, then the device structure is simple, but the contact surface area with the travel path is small resulting in inadequate grip
Solution Approach 1:
The single sphere is segmented into multiple independent wheels arranged on the vehicle chassis. Each wheel contacts the ground at a separate point, collectively providing multiple contact surfaces that increase total grip force while maintaining omnidirectional movement capability through coordinated wheel rotation.
2Device complexity
If a single sphere is used for omnidirectional movement, then the device structure is simple, but propulsive force is insufficient due to point contact
Solution Approach 1:
The single sphere is segmented into multiple independent wheels arranged on the vehicle chassis. Each wheel contacts the ground at a separate point, collectively providing multiple contact surfaces that increase total grip force while maintaining omnidirectional movement capability through coordinated wheel rotation.
3Volume of moving object
If a single sphere is used, then the device is compact, but vibration from bumps and rough ground is transmitted directly to the frame resulting in poor ride comfort
Solution Approach 1:
The single sphere is segmented into multiple independent wheels arranged on the vehicle chassis. Each wheel contacts the ground at a separate point, collectively providing multiple contact surfaces that increase total grip force while maintaining omnidirectional movement capability through coordinated wheel rotation.
4Stability of the object's composition
If the vehicle body is rigidly fixed to the chassis, then attitude stability is maintained, but the vehicle cannot adapt to uneven surfaces and ride comfort deteriorates
Solution Approach 1:
The universal coupling enables dynamic attitude adjustment of the vehicle body relative to the chassis. The coupling allows the vehicle body to pivot and tilt in response to uneven surfaces while the attitude stabilizing system actively adjusts to maintain overall stability, combining adaptability with controlled stability.
5Force
If multiple wheels are used instead of a single sphere, then contact surface area and grip are improved, but device complexity increases
Solution Approach 1:
The single sphere is segmented into multiple independent wheels arranged on the vehicle chassis. Each wheel contacts the ground at a separate point, collectively providing multiple contact surfaces that increase total grip force while maintaining omnidirectional movement capability through coordinated wheel rotation.
Solution Approach 2:
Multiple wheels are used instead of a single sphere, allowing the system to achieve both improved ground contact and omnidirectional movement capability. The universal coupling further enhances this by enabling the vehicle body to adapt its attitude while maintaining stability, serving multiple functions simultaneously.
6Strength
If the vehicle body is rigidly fixed to the chassis, then structural stability is maintained, but vibration transmission to the vehicle body increases
Solution Approach 1:
The universal coupling enables dynamic attitude adjustment of the vehicle body relative to the chassis. The coupling allows the vehicle body to pivot and tilt in response to uneven surfaces while the attitude stabilizing system actively adjusts to maintain overall stability, combining adaptability with controlled stability.
Data Source
AI summary
An omnidirectional moving device is provided with a vehicle chassis, a vehicle body, a universal coupling, and an attitude stabilizing system. In the vehicle chassis, a plurality of wheels that are capable of moving omnidirectionally are provided. The vehicle body is mounted on the vehicle chassis. The universal coupling connects the vehicle chassis to the vehicle body, and the attitude of the vehicle body relative to the vehicle chassis can be changed via this universal coupling. The attitude stabilizing system causes the vehicle chassis to move in a direction that corresponds to a change in the attitude of the vehicle body, and maintains the attitude stability of the vehicle body.