Wear Lining Fastening Arrangement for Faster, Safer Replacement

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Solution Overview

Problem

Conventional fastening methods for wear-resistant lining elements in machines are time-consuming, require significant force, and pose a risk of injury to service personnel, making them inefficient and hazardous.

Innovation Solution

A lining arrangement featuring a first element that can be received in a through hole of the lining element and a second element with grooves for tool engagement, allowing for easy and fast attachment to a support structure using a screwing tool, eliminating the need for hammers and reducing hazardous procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional fastening methods using bolts and hammers are used, then the lining elements can be securely attached to the support structure, but the process is time-consuming and increases machine downtime

Engineering Contradiction:

Improvesecure attachmentVSAvoidmachine downtime

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The fastening system is divided into two separate elements: a first element that is permanently attached to the support structure, and a second element that is removable and can be quickly exchanged. This segmentation allows the permanent mounting structure to remain in place while only the removable second element needs to be changed during maintenance, significantly reducing downtime.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first element is pre-attached to the support structure before the lining element is installed. This preliminary action eliminates the need to repeatedly attach and detach the mounting structure during maintenance operations, allowing for quick replacement of the second element and reducing machine downtime.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If conventional fastening methods requiring substantial force are used, then the lining elements can be securely fastened, but service personnel are exposed to high risk of injury

Engineering Contradiction:

Improvesecure fasteningVSAvoidinjury risk to personnel

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention replaces the traditional hammering mechanical action with a screwing or threading mechanism. The second element is screwed onto the first element, converting the fastening action from high-impact hammering to controlled rotational threading. This substitution eliminates the need for hammers and reduces the risk of injury from flying tools or accidental impacts while maintaining secure fastening.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The threaded connection between the first and second elements acts as an intermediary mechanism that distributes the fastening force evenly. Instead of concentrated impact forces from hammering, the threading gradually engages and secures the lining element, reducing shock loads and making the process safer for service personnel.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If conventional bolts are used for fastening, then the lining elements can be attached to the support structure, but securing and unsecuring the bolts is awkward and time-consuming

Engineering Contradiction:

Improveattachment securityVSAvoidfastening process ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The fastening system transitions from static bolted connections to a dynamic threaded connection where the second element can be easily screwed on and off. The threading mechanism provides progressive engagement that is more intuitive and easier to operate than aligning and securing multiple bolts, improving the ease of operation during maintenance.

Inventive Principle:

Principle #15Dynamics

4Reliability

If through bolts are used to clamp lining elements, then secure fastening is achieved, but the process requires substantial force and increases complexity

Engineering Contradiction:

Improvefastening securityVSAvoidfastening system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The fastening system is segmented into a permanent first element attached to the support structure and a removable second element. This segmentation simplifies the overall system by separating the complex mounting structure from the replaceable component, reducing the complexity of repeated fastening operations while maintaining secure attachment.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10953438B2Lining arrangement, and a method for fastening lining elements to a support structure

Publication Date: 2021.03.23 METSO OUTOTEC FINLAND OY

AI summary

The disclosure relates to a lining arrangement for wear protection comprising: at least one lining element arranged to be fastened to a support structure; and at least one device, the device comprising: a first element adapted to be received in a through hole of said at least one lining element or a through hole created by adjacent lining elements, the first element having an axially arranged opening; a second element for engagement with the first element, such that the at least one lining element is attached to the support structure upon interconnection between the first element and the second element, and wherein an outer periphery of the second element comprises a plurality of grooves for engagement with a handling tool. The disclosure further relates to a method for fastening lining elements to a support structure.