Haul Truck Lining with Segmented Load-Breaking Elements
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Solution Overview
Problem
Haul truck bodies experience heavy wear and instability due to the impact and abrasion of heavy loads, leading to potential accidents and increased strain on structural parts, as conventional linings lack sufficient load-breaking properties to prevent sliding and sticking issues.
Innovation Solution
A lining system for haul truck bodies comprising different types of lining elements with varying load-breaking properties, including load-breaking and load-releasing elements, strategically arranged to restrict load movement and prevent sliding, while also reducing carry-back, by utilizing materials with specific friction coefficients and elasticity to manage load distribution effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lining materials are used, then the lining provides basic protection against wear and impact, but the load stability is insufficient and sliding issues occur
Solution Approach 1:
The lining is divided into different zones with different friction coefficients. High friction coefficient lining elements are placed in specific regions where load sliding is most problematic, while other regions use lining elements with lower friction coefficients. This localized differentiation optimizes load stability without requiring high friction across the entire lining surface.
Solution Approach 2:
The lining system uses a composite structure combining different types of lining elements with varying material properties. These include elements with high friction coefficients for load stability, elastic materials for impact absorption, and wear-resistant materials for durability. The composite nature allows simultaneous optimization of multiple competing requirements.
2Reliability
If high friction materials are used throughout the lining, then load stability improves, but the risk of load sticking and carry-back increases
Solution Approach 1:
Different regions of the lining have different friction characteristics tailored to their specific functional requirements. High friction zones are strategically placed to prevent sliding in critical areas, while low friction zones are positioned where load release and prevention of carry-back are priorities. This spatial variation resolves the contradiction between preventing sliding and avoiding sticking.
3Reliability
If expensive high-performance lining materials are used across the entire haul truck body, then load stability and wear resistance improve, but manufacturing and installation costs increase
Solution Approach 1:
High-performance lining elements with superior load stability and wear resistance are installed only in specific regions where these properties are most critical, rather than across the entire haul truck body. This selective placement reduces the total quantity of expensive materials required while maintaining adequate performance in critical zones.
Solution Approach 2:
The lining system is segmented into multiple replaceable elements of different types and performance levels. This modular segmentation allows optimization of material usage by placing high-performance elements only where needed, while using standard or lower-cost elements in less critical areas, thereby reducing overall manufacturing costs.
4Reliability
If the lining structure is made more complex to improve load stability, then load distribution improves, but the device complexity and maintenance difficulty increase
Solution Approach 1:
The lining is divided into multiple independent, modular elements that can be individually installed and replaced. Each element is relatively simple in structure, but their collective arrangement creates the desired complex load-distributing effect. This segmentation simplifies manufacturing and maintenance while achieving the required load distribution performance.
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 tailored lining system enhances load stability during transport, reduces the risk of accidental load release, and minimizes strain on structural parts by controlling load movement and distribution, while being cost-effective by using more expensive materials only where necessary.
Implementation Method 1
An advantage of the elastic lining material is that its material properties may be used to mitigate the effects of heavy impact of material on the haul truck body as material is hauled from quite some altitude onto the haul truck body from for example an excavator. The elastic lining material effectively absorbs the energy from the impact distributing said energy over a larger area
Implementation Method 2
said load-breaking lining elements being structured and arranged to restrict, to a higher degree than the second type of lining elements, movement of said load in relation to the lining
Data Source
AI summary
The disclosure relates to a lining for a haul truck body, said lining being arranged to extend over a haul truck body for carrying a load, wherein the lining is formed by a plurality of lining elements comprising at least a first type of lining elements, termed load-breaking lining elements, and a second type of lining elements, different from the load-breaking lining elements, said load-breaking lining elements being structured and arranged to restrict, to a higher degree than the second type of lining elements, movement of said load in relation to the lining. The disclosure further relates to a haul truck body comprising the lining and a haul truck comprising the haul truck body.