Articulated Bogie Chassis for High Ground Clearance
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Solution Overview
Problem
Existing all-terrain vehicles are complex and inefficient, particularly in navigating undulating terrain and hostile environments, often requiring additional actuators and motorization to manage obstacles and distribute weight effectively.
Innovation Solution
A vehicle design featuring a rigid and articulated chassis with four wheels arranged in bogies, where each pair of wheels is fixed to the base by rigid means and articulated in rotation, allowing for identical but opposite angles of inclination, with a differential transmission system that includes damping and preload mechanisms, enabling efficient ground clearance and obstacle navigation without additional motorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional actuators and motorization are used to manage obstacles and distribute weight, then the vehicle's ability to navigate undulating terrain improves, but the device complexity increases
Solution Approach 1:
The chassis employs dynamic articulation between the central body and bogies, allowing automatic adaptation to terrain variations through controlled movement of rigid bars. This dynamic configuration enables the vehicle to maintain stability and navigate obstacles without requiring additional active actuators at each wheel, thus improving terrain navigation capability while avoiding increased device complexity
Solution Approach 2:
The vehicle chassis is segmented into a central body and separate bogies connected by rigid bars, allowing independent movement and articulation of each bogie. This segmentation enables the system to distribute weight and adapt to terrain variations through the articulation of individual bogies rather than requiring complex centralized control systems
2Length of moving object
If a rigid and articulated chassis with bogies is used, then ground clearance and obstacle traversal capability improve, but the manufacturing complexity increases
Solution Approach 1:
The invention merges the functions of suspension, steering, and drive train into a single integrated bogie assembly. Each bogie combines wheel mounting, articulation mechanism, and rigid bar connection into one unit, which simplifies manufacturing compared to assembling multiple separate components. The rigid bars serve multiple functions including structural support, articulation linkage, and weight distribution
3Stability of the object's composition
If weight is distributed between four wheels in articulated bogies, then the vehicle's stability and obstacle navigation improve, but the transmission system complexity increases
Solution Approach 1:
The differential transmission system automatically distributes torque to the four wheels based on their individual contact conditions with the terrain. The differential mechanism self-regulates power distribution without requiring external control systems or sensors, maintaining vehicle stability on uneven ground while avoiding the complexity of active control systems. The system serves itself by using the natural mechanical properties of the differential to adapt to terrain variations
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 vehicle achieves high ground clearance and efficient obstacle navigation with a simpler design, distributing weight optimally between wheels and allowing for greater obstacle traversal without additional motorization, suitable for diverse environments including disasters, hostile zones, and recreational use.
Implementation Method 1
The transmission means comprises a differential
Implementation Method 2
the weight of the vehicle is distributed between those four wheels
Implementation Method 3
the transmission means comprises a damping means which may or may not be variable
Implementation Method 4
the transmission means comprises a preload means
Data Source
AI summary
The invention relates to a vehicle which includes at least four wheels and a base. Said wheels are attached in pairs at the base via connections and form a bogie consisting of a pair of wheels. Said bogies are rotatably hinged onto the base such that the pivot point of the path of the wheels is not physically present and said pivot point is located under the rotational axis of the wheels when the bogie is horizontal. The rotation of a bogie is transmitted by a transmission means to the other bogie such that the slant of each bogie in relation to the base forms an angle of identical but opposite value.