Tire Bead Extraction Hook Arm for OTR Tire Recycling

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Solution Overview

Problem

The disposal of large diameter off-the-road (OTR) tires poses challenges due to their size and the presence of large steel beads, which are difficult to remove and increase equipment wear in shredding machines, and owners of scrapped tires face liability concerns if the beads are not removed, as there are no machines capable of removing the whole bead from OTR tires.

Innovation Solution

A tire debeading system with a frame base, tire lift, and extendable hook arm that lifts and positions the tire to extract the steel bead through a central opening, using a hook arm and stripping dyes to separate the bead from the tire, allowing for safe and cost-effective removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If shredding machines are used to cut through steel beads in OTR tires, then the beads can be removed, but equipment wear and maintenance costs significantly increase

Engineering Contradiction:

Improvebead removal capabilityVSAvoidequipment wear

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the steel bead from the tire as a separate operation before shredding. The bead removal system uses a hook arm to engage and extract the bead through the tire opening, separating this difficult task from the main shredding process. This prevents the bead from contacting and wearing the shredding machine components.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent divides the tire recycling process into distinct segments: bead removal as a separate preliminary step, followed by tire shredding. The bead removal system includes specialized components (hook arm, positioning mechanisms) dedicated solely to bead extraction, while the shredding machine handles only the rubber portion, optimizing each stage for its specific function.

Inventive Principle:

Principle #1Segmentation

2Productivity

If OTR tires are repaired and resold without bead removal, then economic value is recovered, but liability risks arise from defective tires

Engineering Contradiction:

Improvetire reuse valueVSAvoidliability risk

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent converts the potentially harmful situation of unrepaired defective tires into a beneficial outcome by providing a reliable bead removal system. Owners can now confidently remove beads themselves using this equipment, ensuring tires are properly prepared for disposal or legitimate reuse, thereby eliminating liability concerns while maintaining economic value.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent enables tire owners to perform bead removal themselves using the provided equipment, rather than relying on external services. The system includes all necessary components (hook arm, positioning mechanisms, support structures) that allow owners to safely and effectively remove beads from their own tires, ensuring proper disposal or reuse preparation.

Inventive Principle:

Principle #25Self-service

3Device complexity

If no bead removal machines are available, then equipment costs are avoided, but tire disposal and reuse becomes problematic

Engineering Contradiction:

Improveequipment availabilityVSAvoidtire disposal difficulty

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The patent designs a bead removal system that can handle various OTR tire sizes and configurations. The hook arm and positioning mechanisms are adjustable to accommodate different bead diameters and tire openings, making the equipment universally applicable to multiple tire types rather than requiring specialized machines for each size.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a hook arm as an intermediary tool between the operator and the steel bead. The hook arm engages the bead through the tire opening and provides mechanical advantage for extraction, serving as a mediator that makes the difficult bead removal task feasible without requiring complex heavy machinery.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 efficient and cost-effective removal of steel beads from OTR tires, reducing equipment wear and allowing for safe disposal or reuse of the tire casing without the risk of reusing defective tires.

Implementation Method 1

One or more power cylinders may be actuated to lift the tire from the horizontal position to a generally vertical position

Methodology Applied

Scientific EffectHydraulic actuation: Hydraulic Press

Implementation Method 2

using a hook arm and stripping dyes to separate the bead from the tire

Methodology Applied

Scientific EffectMechanical force: Mechanical Force

Implementation Method 3

using a hook arm and stripping dyes to separate the bead from the tire

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS9211656B2System and method of removing beads from tires

Publication Date: 2015.12.15 BREHMER MFG INC

AI summary

A system and method for removing steel beads from large diameter tires by lifting a tire into a position adjacent an extraction hook and a pair of stripping dyes. The hook is positioned adjacent the tire bead and is then withdrawn through a narrow opening in the stripping dyes, which removes the bead from the tire. The machine is capable of removing both rubber-encased inner beads from the tire without repositioning the tire within the system. A plurality of lifting platforms position the tire and the stripping mechanisms with respect to one another throughout the extraction process.