Non-Pneumatic Track Idler Wheel for Shock Absorption and Tension
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Solution Overview
Problem
Existing track systems for vehicles, such as ATVs, face challenges in maintaining traction and ride quality due to obstacles like rocks, trees, and uneven terrain, which can lead to shocks and structural integrity issues, and current solutions for shock absorption can compromise track tensioning.
Innovation Solution
A track system featuring non-pneumatic tires with an annular beam that deflects by shearing at the contact area and an annular support that resiliently deforms under loading, allowing for better handling of obstacles and maintaining track tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If resilient components are provided to enhance shock absorption, then ride quality is improved, but track tensioning is compromised
Solution Approach 1:
The idler wheel is segmented into distinct functional components: an annular beam for shock absorption, an annular support structure for maintaining geometry, and a tensioning mechanism. This segmentation allows each component to specialize in its function without compromising others.
Solution Approach 2:
The annular beam is designed to dynamically deflect under load to absorb shocks, while the annular support maintains the wheel's geometric integrity. This dynamic response allows the wheel to adapt to terrain variations while preserving track tensioning capability.
2Adaptability or versatility
If the annular beam deflects more by shearing than bending, then obstacle handling is improved, but structural integrity may be compromised
Solution Approach 1:
The annular beam is designed with non-uniform cross-sectional properties along its circumference, creating regions of varying shear and bending resistance. This local quality variation allows the beam to preferentially deflect by shearing at contact points while maintaining overall structural integrity through strategically placed reinforcement.
Solution Approach 2:
The idler wheel assembly combines materials with different mechanical properties: the annular beam uses materials optimized for shear deformation, while the annular support employs stiffer materials to maintain geometric integrity. This composite approach enables differential deformation modes that protect structural integrity.
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 track system enhances traction and ride quality by absorbing shocks and maintaining track tension, enabling vehicles to navigate obstacles effectively while maintaining performance.
Implementation Method 1
an annular support disposed radially inwardly of the annular beam and configured to resiliently deform under loading on the idler wheel for supporting the loading on the idler wheel by tension
Implementation Method 2
The annular beam is configured to deflect more by shearing than by bending at the area of contact of the non-pneumatic tire with the track when the idler wheel encounters an obstacle on the ground
Data Source
AI summary
A track system for traction of a vehicle (e.g., an all-terrain vehicle (ATV), an agricultural vehicle, etc.) may be designed (e.g., may comprise non-pneumatic tires) to enhance its use or performance and/or that of the vehicle such as, for example, by being lightweight and/or by better handling loads, including, for instance, those resulting from track tension within the track system and/or from unevenness or other aspects of the ground, including encounters (e.g., impacts) with obstacles on the ground (e.g., rocks, portions of trees, debris, bumps, abrupt changes in ground level, etc.). The track system may comprise tension-based non-pneumatic tires.