Chassis with Axial Steering and Active Suspension
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Solution Overview
Problem
Existing vehicle and robot chassis technologies lack stability and adaptability in rugged environments, particularly in terms of turning radius and mobility, especially for multi-wheel vehicles and robots that need to navigate obstacles and varying terrain.
Innovation Solution
A chassis design featuring a suspension system with adjustable elastic constants and damping coefficients, connected to a steering mechanism that can control wheel angles and height, allowing for obstacle, climbing, stairs, and turning modes, with 360-degree rotation capabilities, and suitable for various types of vehicles and robots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single connecting-rod steering is used for four-wheel cars, then the steering is simple and easy to control, but it cannot be applied to multi-wheel vehicles such as six-wheel armored cars, jeeps, buses or tanks
Solution Approach 1:
The steering mechanism is divided into multiple independent connecting rods, with each connecting rod controlling a specific wheel. This segmentation allows the steering system to be adapted to vehicles with different numbers of wheels, as each wheel can be independently controlled through its own connecting rod mechanism.
2Device complexity
If non-active suspension with fixed elastic constant and damping coefficient is used, then the suspension structure is simple, but the adaptability to different road environments is poor
Solution Approach 1:
The suspension system employs active control mechanisms that dynamically adjust the elastic constant and damping coefficient based on real-time road conditions and vehicle state. This dynamic adjustment capability allows the suspension to adapt to various road environments, from smooth highways to rough off-road terrain, while maintaining optimal performance.
3Device complexity
If tires are fixed to steering with inclined angles (camber angle, inclined angle, toe angle), then the steering mechanism is compact, but the steering part bears additional forces that cause wear to both steering and rim
Solution Approach 1:
The steering mechanism is designed to maintain the tire vertical axis parallel to the vehicle centerline, creating an equipotential condition where forces are evenly distributed. This design eliminates the additional lateral forces and moments that would otherwise act on the steering mechanism, significantly reducing wear on both the steering components and wheel rims.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The chassis maintains stability and mobility in diverse environments, enabling fast and accurate movement on different terrains, including obstacles and stairs, and can be widely used in both vehicles and robots.
Implementation Method 1
The suspension is mainly composed of a spring and a damper
Implementation Method 2
The suspension is mainly composed of a spring and a damper
Data Source
AI summary
A sport-wheeled chassis is provided for connecting to a mobility device, which comprises a suspension set up under the bottom of the mobility device, a steering pivotally connected to the suspension, a controller connected to the suspension and steering electrically, tires which are pivotally connected to the steering and disposed under the steering, and a steering shaft of the steering which coincides axially with the steering shaft of the tire so that the controller can operate the turning direction of the tire and the height of the suspension through the suspension and the steering. The chassis is not only with a simple structure, but also with a suspension to control the height of the chassis off the ground, so that the chassis can maintain stability in any rugged environment, and, with its attached wheels, the chassis can move to desired places fast and accurately.