Friction Drive Track System Without Metallic Cores
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Solution Overview
Problem
Existing track systems for off-road vehicles, particularly construction vehicles, face issues with ride quality due to metallic cores causing vibrations and increased costs, while also seeking to enhance traction and power generation capabilities.
Innovation Solution
A track system designed without transverse rigid parts, featuring a motor and transmission integrated within the track, utilizing a friction drive mechanism with a drive wheel and idler wheel assembly to improve ride quality and power transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metallic cores are embedded in the track to provide transverse rigidity and drive/guide the track, then the track structure is strengthened and guided, but ride quality deteriorates due to significant vibrations induced by the metallic cores
Solution Approach 1:
The patent changes the material composition and structural parameters of the track by eliminating metallic cores and using only elastomeric material with longitudinal reinforcement, fundamentally altering the track's mechanical properties to reduce vibrations while maintaining necessary strength
2Reliability
If metallic cores are embedded in the track to drive and guide the track, then the track can be driven and guided effectively, but the track cost increases due to the use of metallic materials
Solution Approach 1:
The patent extracts the metallic cores from the track structure, removing the expensive metallic components while maintaining the essential driving and guiding functions through the elastomeric track material itself and the drive wheel assembly
Solution Approach 2:
The patent replaces expensive metallic cores with cheaper elastomeric material that can be manufactured more economically, accepting that the elastomeric material may require more frequent replacement but achieving lower initial cost and reduced vibration
3Volume of moving object
If the motor and transmission are integrated within the track system with the drive wheel, then the design becomes more compact and power transmission is more efficient, but the device complexity increases
Solution Approach 1:
The patent merges the motor, transmission, and drive wheel into a single integrated assembly, combining multiple functions (power generation, power transmission, and track driving) into one compact unit that reduces overall system size and improves power transmission efficiency
Solution Approach 2:
The drive wheel assembly serves multiple functions simultaneously: it acts as the drive mechanism for the track, houses the transmission system, and integrates the motor, making a single component perform what would traditionally require separate assemblies
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 solution enhances ride quality by reducing vibrations, improves traction, and facilitates compact design and energy efficiency, while eliminating the need for metallic cores, thus reducing production costs and enhancing vehicle performance.
Implementation Method 1
a drive wheel for driving the track and an idler wheel. The track system comprises a motor and a transmission disposed between the motor and the drive wheel to transmit power generated by the motor to the drive wheel
Data Source
AI summary
A track system for traction of a vehicle (e.g., a compact track loader or other construction vehicle) which may be designed to improve ride quality (e.g., reduce vibrations) for an operator and/or enhance other aspects of its performance or that of the vehicle. For example, a track of the track system may be frictionally driven and without transversal rigid parts (e.g., metallic cores). Also, power generation and transmission functions may be implemented by the track system. For instance, a motor and a transmission may be at least mostly contained within the track system.