Pivoting Roller Wheel Assemblies for Track Vehicle Suspension Damping

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Solution Overview

Problem

Conventional suspension systems for track-driven work vehicles lack sufficient vertical damping to effectively accommodate large bumps and ground surface variations, leading to inadequate weight distribution and increased vibrations.

Innovation Solution

A suspension system featuring pivoting roller wheel assemblies with inboard and outboard roller shafts connected by a pivot mechanism, allowing load transfer between the wheels to improve vertical motion damping and reduce shock loading.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional suspension systems are used, then the structure is simple, but vertical damping capability is insufficient to accommodate large bumps and ground surface variations

Engineering Contradiction:
Improvevertical damping capabilityVSAvoidsuspension system structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The roller wheel assembly is designed to pivot dynamically about a pivot axis, allowing the assembly to adapt its orientation in response to ground surface variations and bumps. This dynamic capability enables the suspension to accommodate large vertical movements while maintaining track-to-ground contact, resolving the contradiction between adaptability and structural simplicity.

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If conventional fixed roller wheel assemblies are used, then the system is simple, but weight distribution across load bearing wheels is uneven

Engineering Contradiction:
Improveweight distributionVSAvoidroller wheel assembly structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The pivotable roller wheel assembly dynamically adjusts weight distribution by allowing individual assemblies to tilt independently in response to ground conditions. This dynamic adjustment ensures more even load distribution across all load bearing wheels, improving stability without requiring complex multi-component suspension systems.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If conventional suspension systems without sufficient vertical damping are used, then vibrations are transmitted to the chassis, but operator comfort is reduced

Engineering Contradiction:
Improveoperator comfortVSAvoidvibrations and shock loading
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The pivotable roller wheel assemblies dynamically absorb and dampen vertical vibrations and shock loading as they pivot in response to ground surface variations. This dynamic damping action reduces the transmission of harmful vibrations to the vehicle chassis, thereby improving operator comfort without requiring additional complex vibration isolation systems.

Inventive Principle:
Principle #15Dynamics

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 system provides enhanced motion damping, leading to more even weight distribution, improved track-to-ground contact, and increased operator comfort by reducing vibrations and shock loading.

Implementation Method 1

a pivot mechanism coupling the inboard roller shaft to the outboard roller shaft, where the pivot mechanism defines a pivot axis about which the inboard and outboard roller shafts pivot

Methodology Applied
Scientific EffectPivoting motion: Hinge

Data Source

PatentUS11753093B2Suspension system for a track-driven work vehicle with pivoting roller wheel assemblies
Publication Date: 2023.09.12 BLUE LEAF I P INC
  • US11753093B2 patent drawing
  • US11753093B2 patent drawing
  • US11753093B2 patent drawing

AI summary

An improved suspension system for a track-driven work vehicle includes a roller beam and at least one roller wheel assembly coupled to the roller beam. The roller wheel assembly includes an inboard roller shaft, an inboard roller wheel coupled to the inboard roller shaft, an outboard roller shaft, and an outboard roller wheel coupled to the outboard roller shaft. Additionally, the roller wheel assembly includes a pivot mechanism coupling the inboard roller shaft to the outboard roller shaft.