Worm-Driven Track Assembly for Variable Track Spacing
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Solution Overview
Problem
Existing track assemblies face challenges in maintaining alignment and efficient operation due to variances in the distance between parallel tracks, which can lead to misalignment and increased friction, affecting the stability and efficiency of the support assembly.
Innovation Solution
The track assembly incorporates a rotatable shaft and a pair of worms with threads engaged with the track teeth, where a spring biases the worms to rotate relative to each other, allowing the assembly to compensate for variations in track distance and maintain alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between parallel tracks is fixed, then the structure is simple and stable, but it cannot compensate for variances in track distance leading to misalignment and increased friction
Solution Approach 1:
The patent applies the dynamics principle by making the support assembly movable relative to the tracks through a mechanism involving a first support portion and a second support portion that can shift positions. This dynamic configuration allows the support assembly to adapt to variances in track distance while maintaining alignment, resolving the contradiction between structural simplicity and adaptability.
Solution Approach 2:
The support assembly is segmented into multiple portions (first support portion and second support portion) that can move independently relative to each other. This segmentation enables each portion to adjust to track variations separately, providing adaptability without requiring complete redesign of the entire support structure.
2Reliability
If the support assembly is rigidly connected to the tracks, then alignment is maintained, but friction increases and stability decreases due to inability to compensate for variances
Solution Approach 1:
The patent transforms the rigid connection into a dynamic, movable connection where the support assembly can shift its position relative to the tracks. This dynamic connection maintains alignment stability through controlled movement while reducing friction by allowing the assembly to naturally adjust to track variances rather than forcing rigid contact.
Solution Approach 2:
The patent introduces an intermediary mechanism between the support assembly and the tracks that facilitates smooth relative movement. This intermediary allows the support assembly to maintain proper alignment while accommodating track distance variances, thereby reducing friction and improving reliability simultaneously.
3Ease of operation
If the support assembly can move relative to the tracks, then friction is reduced and adaptability improves, but alignment stability may be compromised
Solution Approach 1:
The patent implements a dynamic system where the support assembly can move relative to the tracks through coordinated movement of the first and second support portions. This dynamic design ensures smooth operation by allowing natural adjustment to track conditions while maintaining alignment stability through the interrelated movement of the support portions that work together to preserve proper positioning.
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
This configuration enables the track assembly to maintain alignment and reduce play between the support assembly and the tracks, enhancing stability and efficiency by minimizing friction and ensuring smooth operation.
Implementation Method 1
a spring biases the worms to rotate relative to each other
Implementation Method 2
a first worm and a second worm of the pair of worms are engaged with the track teeth
Data Source
AI summary
A track assembly, comprising a track including teeth; and a support assembly slidably connected to the track. The support assembly includes a rotatable shaft disposed at least partially in the track, a first worm coupled with the rotatable shaft and engaged with the teeth; and a second worm coupled with the rotatable shaft and movable relative to the first worm, the second worm engaged with the teeth.