Haul Truck Lining Element Weight Optimization
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Solution Overview
Problem
Haul truck bodies experience significant wear due to heavy and sharp loads, leading to reduced payload capacity and increased maintenance needs, as existing lining materials and designs do not effectively balance weight reduction with stiffness and durability.
Innovation Solution
A wear-resistant lining element featuring a reinforcement plate with mounting holes and weight-reducing cut-out openings covered by elastic material, along with bent edges to maintain shape and stiffness, allowing for reduced weight while maintaining structural integrity and ease of manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reinforcement plate is made solid without cut-outs, then the stiffness and structural integrity are improved, but the weight increases reducing payload capacity
Solution Approach 1:
Weight-reducing cut-out openings are removed from the reinforcement plate in areas that are covered by elastic material. This extraction of material reduces the overall weight of the lining element while the elastic material covering the cut-outs maintains the structural integrity and stiffness of the plate.
Solution Approach 2:
The reinforcement plate has non-uniform structure with cut-outs located specifically in areas covered by elastic material, while mounting holes remain uncovered for functional purposes. This local differentiation optimizes weight reduction in non-critical areas while preserving strength in critical mounting regions.
2Weight of moving object
If cut-out openings are made larger, then the weight reduction is improved, but the structural integrity may be compromised
Solution Approach 1:
Elastic material acts as an intermediary that covers the cut-out openings in the reinforcement plate. This intermediary element allows large cut-outs for weight reduction while the elastic material maintains the structural integrity and prevents the plate from becoming too flexible or weak.
3Strength
If mounting holes are covered by elastic material, then the structural integrity is improved, but the mounting functionality is lost
Solution Approach 1:
The reinforcement plate features selective coverage where mounting holes remain uncovered to maintain mounting functionality, while other areas have cut-outs covered by elastic material for structural integrity. This local differentiation ensures each region serves its specific function.
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 solution enhances payload capacity by reducing the weight of the lining element while maintaining its stiffness and shape, allowing for improved durability and easier installation, thus addressing the wear and maintenance challenges faced by haul truck bodies.
Implementation Method 1
The elastic lining material effectively absorbs the energy from the impact and distributes said energy over a larger area
Implementation Method 2
The bent edges of the reinforcement plate will help keeping the lining element in a preferred shape, for example planar. The bent edges grip into the elastic material, keeping it in place.
Implementation Method 3
Rubber tends to shrink after the manufacturing process, which otherwise would cause the plate to be bent out of shape.
Data Source
AI summary
A lining element for a wear-resistant haul truck body lining comprises a reinforcement plate being at least partly embedded in elastic material. The reinforcement plate comprises a plurality of mounting holes which are arranged for mounting the lining element to a haul truck body and which are not covered by the elastic material, and one or more weight-reducing cut-out openings which are larger than the mounting holes and which are covered by the elastic material.