Breaker Pick Retainer With Resilient Plug

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Solution Overview

Problem

The existing feeder breaker systems face difficulties in easily removing and replacing breaker picks due to corrosion and compacting of material, which often results in damage to the holder or other components.

Innovation Solution

A breaker pick system with an intermediate holder featuring a pick aperture and a transverse pin aperture, where a pin is seated in a recess of the breaker pick and a resilient plug seals the pin aperture to prevent removal, allowing for secure engagement and easy replacement of the breaker pick.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If spiral roll pins are used to retain breaker picks, then the picks are securely held during operation, but the pins become difficult to remove and cause damage to holders due to corrosion and material compacting

Engineering Contradiction:
Improveretention strengthVSAvoidpin removal ease
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The retention system is divided into two separate functional components: a pin for securing the breaker pick during operation and a resilient plug for retaining the pin during storage and maintenance. This segmentation allows the pin to be easily removed from the holder without causing damage, while still providing secure retention during breaker operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A resilient plug is introduced as an intermediary component between the pin and the holder. The plug provides the retention function during storage and transport, allowing the pin to be easily removed without damaging the holder. During breaker operation, the pin serves its retention function while the plug prevents material compacting around the pin.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If pins are left exposed in pin apertures, then easy access is provided, but corrosion and material compacting prevent pin removal

Engineering Contradiction:
Improvepin accessibilityVSAvoidpin removal reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The resilient plug is installed in the pin aperture before the pin is subjected to corrosive environments or material compacting. This preliminary action protects the pin from corrosion and prevents material from compacting around the pin, ensuring reliable pin removal when needed for maintenance or replacement.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If a simple pin retention system is used, then device complexity is reduced, but pick replacement causes damage to holders

Engineering Contradiction:
Improveretention system complexityVSAvoidholder damage during maintenance
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The retention system is segmented into a pin component and a resilient plug component, each with distinct functions. This simple two-component design prevents damage to holders during pick replacement while maintaining low overall system complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The resilient plug serves as a sacrificial or replaceable component that protects the more valuable holder and pin components. By using a simpler, potentially disposable plug, the system prevents damage to expensive holders during maintenance operations.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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 solution simplifies the removal and replacement of breaker picks, reduces the risk of damage to components, and extends the life of the pin by preventing corrosion, thereby saving time and effort while maintaining machine performance.

Implementation Method 1

A resilient plug is received within the pin aperture for sealing the pin aperture, and the plug inhibits removal of the pin from the pin aperture

Methodology Applied
Scientific EffectCorrosion prevention:

Implementation Method 2

A resilient plug is received within the pin aperture for sealing the pin aperture

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS9757730B2Pick retainer
Publication Date: 2017.09.12 JOY GLOBAL UNDERGROUND MINING LLC
  • US9757730B2 patent drawing
  • US9757730B2 patent drawing
  • US9757730B2 patent drawing

AI summary

A breaker pick retainer system for a breaker includes a holder that defines a pick aperture and a pin aperture, and a breaker pick received in the pick aperture of the holder and including a pin receiving feature aligned with the pin aperture. The breaker pick retainer system including a pin received within the pin aperture of the holder and seated in the pin receiving feature of the breaker pick for maintaining the breaker pick within the holder. The breaker pick retainer system further including a resilient plug received within the pin aperture for sealing the pin aperture. The plug inhibits removal of the pin from the pin aperture.