Wheeled to Tracked Conversion Apparatus with Drive Hub Adapter
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Solution Overview
Problem
Mini-loaders with wheels are not suitable for rough or soft terrain, as continuous tracks provide better traction but can shear off the drive hub due to shock loading, making existing retro-fitting solutions unreliable.
Innovation Solution
A modular apparatus for converting wheeled vehicles to tracked vehicles by attaching a continuous track unit, featuring a first portion that surrounds the drive hub, a support arm for the track unit, and a drive sprocket for torque transfer, designed to distribute forces evenly and prevent damage to the steering mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If continuous track units are retro-fitted to mini-loaders, then terrain capability is improved, but reliability deteriorates due to drive hub shearing
Solution Approach 1:
A drive adapter is introduced as an intermediary component between the drive hub and the continuous track unit. The adapter distributes the shock loads and forces from the track unit across multiple attachment points on the drive hub, preventing any single point from bearing excessive stress that would cause shearing. This mediator allows the track unit to function reliably while protecting the drive hub from damage.
2Device complexity
If track units are attached to steering knuckles, then conversion is simplified, but structural integrity deteriorates due to excessive forces
Solution Approach 1:
The attachment system is extracted from the steering knuckle and relocated to the drive hub. By removing the track unit attachment from the steering knuckle, the excessive forces imposed on the steering mechanism are eliminated. The drive hub becomes the new attachment point, which is structurally better suited to handle the forces from the track unit without compromising steering integrity.
3Force
If shock loading is increased for rough terrain use, then traction is improved, but damage to drive components increases
Solution Approach 1:
The drive adapter is designed with load-distributing features that cushion and absorb shock loads before they reach the drive hub. The adapter structure includes elements that can flex or deform elastically under shock loading, dissipating energy and preventing the full force of shocks from being transmitted to the drive hub. This beforehand cushioning allows the system to operate on rough terrain with high traction forces without causing damage to drive components.
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
Enables wheeled vehicles to operate on rough terrain with increased shock loading resistance without damaging the drive hub or steering components, allowing for safer and more reliable use of continuous tracks.
Implementation Method 1
a drive sprocket releasably attachable to the drive hub for transferring torque from the drive hub to the continuous track unit so as to rotate the track
Implementation Method 2
designed to distribute forces evenly and prevent damage to the steering mechanism
Data Source
AI summary
Apparatus arranged for converting a wheeled vehicle to a tracked vehicle by attachment of a continuous track unit, the vehicle comprising a drive hub of the type which is arranged to have an attachable wheel, the continuous track unit replacing the wheel to engage ground in use for movement of the vehicle, the apparatus comprising a mounting portion releasably attachable to the vehicle's chassis, the mounting portion arranged to substantially surround the drive hub, a support arm for supporting the continuous track unit, and a drive sprocket releasably attachable to the drive hub for transferring torque from the drive hub to the continuous track unit so as to rotate the track in use with the wheel removed and the apparatus attached to the vehicle.