Flared Corner Guard Wear Distribution
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Solution Overview
Problem
Existing corner guards in work implement assemblies, such as bucket assemblies, wear unevenly due to limited visibility to operators, leading to premature wear and frequent replacement of left-hand corner guards in applications like underground mining.
Innovation Solution
A corner guard design featuring a rear attachment portion with a fastener receiving void, a vertical direction of assembly, and a lateral direction perpendicular to the vertical direction, along with a forward ramp portion forming a front wear edge, an outer lateral side that is flared laterally, and an inner lateral side, enhancing protection and durability by distributing wear evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional corner guard design is used, then the structure is simple, but the wear resistance is poor and replacement frequency increases
Solution Approach 1:
The corner guard is divided into multiple portions (first portion, second portion, intermediate portion) with different functions. The first portion includes a leading edge for cutting, the second portion includes a rear edge for protection, and the intermediate portion connects them at an angle to distribute stress. This segmentation allows each portion to be optimized for its specific function while improving overall wear resistance.
Solution Approach 2:
Different portions of the corner guard have different geometric properties optimized for their specific functions. The leading edge has a specific angle for cutting efficiency, the rear edge provides protection, and the intermediate portion has an angled connection to distribute stress. This local optimization of geometric properties improves wear resistance without requiring complete redesign of the entire structure.
2Duration of action of stationary object
If the corner guard is made more durable, then replacement frequency decreases, but manufacturing complexity increases
Solution Approach 1:
The corner guard design incorporates specific geometric parameters (angles of 45 degrees for the leading edge, 135 degrees for the intermediate portion, and 90 degrees for the rear edge) that optimize wear resistance. These parameter changes are implemented through standard manufacturing processes like welding or bolting, balancing durability improvement with manufacturing feasibility.
3Strength
If the corner guard uses a 90 degree angle at the corner, then the structure is simple, but stress concentration occurs leading to premature failure
Solution Approach 1:
The corner guard uses asymmetric angles at the corner portions rather than symmetric 90-degree angles. The intermediate portion is angled at 135 degrees relative to the first and second portions, creating an asymmetric geometry that distributes stress more evenly. This asymmetric design prevents stress concentration while maintaining structural integrity.
Solution Approach 2:
The corner guard transitions from a simple 2D corner geometry to a 3D structure with multiple angled portions. The intermediate portion extends at an angle between the first and second portions, adding a dimensional element that distributes stress through multiple pathways rather than concentrating it at a single 90-degree corner.
Data Source
AI summary
A corner guard includes a rear attachment portion defining a first fastener receiving void, a rear edge that is disposed along the direction of material flow, and a forward ramp portion that extends forwardly from the rear attachment along the direction of material flow, and vertically downwardly forming a front wear edge. The corner guard also includes an outer lateral side, and an inner lateral side. The outer lateral side is flared laterally, defining an outer lateral side extremity that is disposed along the direction of material flow adjacent to the front wear edge, forming a flared portion.