Jaw Crusher Liner Clamping Tool for Safe Wedge Fitting

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Solution Overview

Problem

Existing methods for installing jaw liners in jaw crushers are unsafe due to the need for props between jaws during wedge fitting, which can compromise safety.

Innovation Solution

A jaw liner clamping tool with a shaft, clamping head, and releasable fastening mechanism that securely engages with the jaw liner and jawstock, allowing for safe and stable installation without the use of props.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a prop is installed between the jaws to hold the jaw liner in place during wedge fitting, then the jaw liner can be held stable, but safety is compromised

Engineering Contradiction:
Improvejaw liner stabilityVSAvoidsafety hazard
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a specialized clamping tool as an intermediary device between the jaw liner and the operator/environment. This tool features a clamping head with jaws that grip the jaw liner, a shaft for transmission, and a fastening mechanism for secure attachment. The intermediary tool provides stable holding capability while eliminating the safety hazards associated with using improvised props between the crusher jaws.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The clamping tool is designed to be self-contained with integrated clamping jaws, shaft, and fastening mechanism. The tool serves itself by having the clamping head directly grip the jaw liner without requiring external props or supports. The fastening mechanism allows the tool to secure itself to the jaw liner, providing autonomous stability during the wedge fitting operation.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If conventional props are used to hold jaw liner, then installation can proceed, but the method is unsafe and unreliable

Engineering Contradiction:
Improveinstallation feasibilityVSAvoidsafety reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent introduces a specialized clamping tool as an intermediary device between the jaw liner and the wedge fitting operation. This tool features a clamping head with jaws that grip the jaw liner, a shaft for transmission, and a fastening mechanism for secure attachment. The intermediary tool provides stable holding capability while eliminating the safety hazards associated with using improvised props.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

This principle does not apply to this patent as there are no color changes or visual indicators involved in the clamping mechanism.

Inventive Principle:
Principle #32Color changes

3Reliability

If a specialized clamping tool is used instead of props, then safety is improved, but device complexity increases

Engineering Contradiction:
Improveoperational safetyVSAvoidtool structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The clamping tool is segmented into distinct functional modules: a clamping head with gripping jaws, a shaft for force transmission, and a fastening mechanism. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity. The modular structure makes the tool easier to manufacture, assemble, and maintain compared to a monolithic design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The clamping tool is designed with universal applicability to hold jaw liners of various sizes and configurations. The clamping head can accommodate different jaw liner dimensions, and the fastening mechanism can be adjusted for different tightening requirements. This multi-functionality reduces the need for multiple specialized tools, effectively managing complexity through versatility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 tool enables safe and efficient installation of jaw liners by providing a secure clamping mechanism that eliminates the need for unsafe props, enhancing operational safety and ease of use.

Implementation Method 1

a releasable fastening mechanism, wherein clamping tool is coupled to said at least one jaw by said shaft and said fastening mechanism, with said clamping surface engaging said jaw liner to releasably clamp said jaw liner to said at least one jaw

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS11406985B2Clamping tool for a jaw crusher
Publication Date: 2022.08.09 TEREX GB LTD
  • US11406985B2 patent drawing
  • US11406985B2 patent drawing
  • US11406985B2 patent drawing

AI summary

A jaw crusher assembly comprises a jaw crusher a jaw liner clamping tool for clamping a jaw liner to a jaw of the jaw crusher. The clamping tool comprises a clamping head pivotably coupled to a shaft, and a releasable fastening mechanism. The shaft passes through the jaw and its free end is fastened to the jaw by the fastening mechanism, which is tightened to cause the clamping head to exert a clamping force to hold the jaw liner in place. The clamping tool facilitates safe installation of the jaw liners.