Adjustable Grizzly Bar Classifier for Aggregate Separation

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Solution Overview

Problem

Vibratory classifiers, such as grizzly bar classifiers, face challenges in efficiently separating aggregate materials of varying sizes due to limitations in adjustable configurations and support structures, which affect the classification accuracy and durability of the equipment.

Innovation Solution

The vibratory classifier incorporates an adjustable grizzly bar classifier with a spring assembly and support structure that allows for multiple configurations, including angled orientations, and uses wear-resistant materials for the grizzly bars and side liners to enhance material separation and equipment longevity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If grizzly bar classifiers use fixed structural metal beams, then the structure is simple and durable, but the classification accuracy for varying aggregate sizes is limited

Engineering Contradiction:
Improveclassification accuracyVSAvoidadjustable configurations
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent applies the dynamics principle by making the grizzly bars adjustable in orientation through a support structure with multiple mounting positions. The grizzly bars can be rotated to different angles (e.g., horizontal, angled upward, angled downward) to adapt to different aggregate sizes, transforming a static structure into a dynamic, reconfigurable one that maintains manufacturing simplicity while improving classification accuracy.

Inventive Principle:
Principle #15Dynamics

2Reliability

If grizzly bar classifiers use standard support structures, then the equipment is easy to manufacture, but the durability and wear resistance are insufficient

Engineering Contradiction:
ImprovedurabilityVSAvoidsupport structure complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The support structure is segmented into multiple discrete mounting positions and attachment points along the grizzly bar support framework. This segmentation allows for modular assembly and easy manufacturing of individual components while providing multiple secure attachment locations that enhance the overall durability and wear resistance of the classifier system.

Inventive Principle:
Principle #1Segmentation

3Manufacturing precision

If grizzly bar classifiers have fixed bar spacing, then the manufacturing is simple, but the ability to separate aggregate materials of varying sizes is reduced

Engineering Contradiction:
Improvematerial separation efficiencyVSAvoidadjustable configuration mechanisms
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent implements dynamics by enabling the grizzly bars to be repositioned at different orientations through the support structure. This allows the effective spacing between bars to be dynamically adjusted by changing bar orientation rather than physically moving bars closer or farther apart, maintaining manufacturing simplicity while significantly improving the ability to separate aggregate materials of varying sizes.

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

This design improves the efficiency of material separation by allowing for adjustable configurations and increased durability, enabling effective sorting of aggregate materials and reducing wear on the equipment.

Implementation Method 1

a spring assembly and support structure that allows for multiple configurations

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

Vibratory classifiers (such as screens and feeders) use vibration to move material such as aggregate to separate the material into different constituent sized material elements

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS11020768B2Vibratory classifiers
Publication Date: 2021.06.01 SUPERIOR INDUSTRIES LLC
  • US11020768B2 patent drawing
  • US11020768B2 patent drawing
  • US11020768B2 patent drawing

AI summary

Vibrating classifier embodiments such as vibrating grizzly feeders are provided. Some embodiments include a reconfigurable grizzly bar classifier.