Track-Module Kinematic Linkage for Load Distribution

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Solution Overview

Problem

Existing track-module systems fail to evenly distribute load among ground-engaging wheels, leading to uneven ground contact and increased fore-and-aft movement of bogie wheels, as well as coupling between vertical and fore-and-aft movements, which affects directional stability.

Innovation Solution

A track-module apparatus with a unique kinematic linkage structure featuring idler-arm axles, bogie-axle structures, and suspension elements that include hydraulic components and a tensioning system, allowing for even load distribution and reduced movement coupling, enhancing directional stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stress or pressure

If conventional track-module systems are used, then the vehicle can move over ground surfaces, but the load is not evenly distributed among ground-engaging wheels

Engineering Contradiction:
Improveload distribution among wheelsVSAvoidground contact consistency
Core Design Contradiction:
Stress or pressureVSReliability

Solution Approach 1:

The patent employs dynamic suspension arms that allow bogie wheels to move independently relative to the track module frame. This dynamic configuration enables each wheel to adapt to ground variations and maintain optimal contact, achieving even load distribution across all ground-engaging wheels while preserving reliability on uneven surfaces.

Inventive Principle:
Principle #15Dynamics

2Force

If bogie wheels are positioned to support load, then load-bearing capacity increases, but fore-and-aft movement of bogie wheels increases

Engineering Contradiction:
Improveload-bearing capacityVSAvoidbogie-wheel positional stability
Core Design Contradiction:
ForceVSStability of the object's composition

Solution Approach 1:

The patent segments the bogie wheel assembly into independently suspended units, each mounted on its own suspension arm. This segmentation allows each bogie wheel to handle load independently while its movement is controlled by the suspension mechanism, maintaining positional stability even under varying load conditions.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If vertical movement of idler wheels is allowed, then ground adaptability improves, but coupling with fore-and-aft movement of bogie wheels increases

Engineering Contradiction:
Improveground adaptabilityVSAvoidmovement coupling
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent introduces suspension arms as intermediary elements between the idler wheels and the track module frame. These arms act as mediators that allow vertical movement for ground adaptability while decoupling it from fore-and-aft movement of bogie wheels, preventing unwanted coupling and maintaining system stability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11572111B2Track-module apparatus
Publication Date: 2023.02.07 ATI INC
  • US11572111B2 patent drawing
  • US11572111B2 patent drawing
  • US11572111B2 patent drawing

AI summary

A track-module apparatus comprising: (a) idler-arm axle structure for a vehicle and having leading and trailing idler-arm axles; (b) a leading idler arm rotatably attached to the leading idler-arm axle and extending forwardly to a leading-arm distal end at which a leading ground-engaging idler wheel is rotatably attached and rearwardly to a rearward suspension end; (c) a trailing idler arm rotatably attached to the trailing idler-arm axle and extending rearwardly to a trailing-arm distal end at which a trailing ground-engaging idler wheel is rotatably attached and forwardly to a forward suspension end; (d) bogie-axle structure (i) affixed to one of the idler arms, (ii) having at least one bogie-arm axle, and (iii) positioning the at least one bogie-arm axle adjacent to and below the idler-arm axle of the idler arm to which it is affixed; (e) leading-arm and trailing-arm suspension elements rotatably attached to and extending downwardly from the rearward and forward suspension ends, respectively, and each having a lower end; (f) front and rear bogie connecting arms rotatably attached to the front and rear axles, respectively, and extending forwardly and rearwardly to rotatable attachments at the leading-arm and trailing-arm suspension-element lower ends, respectively; (g) front and rear ground-engaging bogie-wheel sets rotatably attached to distal ends of the front and rear bogie connecting arms, respectively; and (h) an endless track extending around the wheels.