Multi-Radius Bucket Wrapper for Even Wear Distribution
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Solution Overview
Problem
Existing bucket designs for work machines in construction and mining industries suffer from uneven wear, particularly at the bottom corners and surfaces, leading to premature rebuilding despite other parts being unworn.
Innovation Solution
A bucket design featuring a base plate at the top and a lip plate at the bottom, with first and second side plates extending downwards. A wrapper with a first curved portion, a first flat portion, and a second curved portion is attached to the lip and base plates, providing a two-radius wrapper configuration that reduces material resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional bucket design with straight or single-radius wrapper is used, then the manufacturing is simple, but the bucket suffers from uneven wear at bottom corners and surfaces leading to premature rebuilding
Solution Approach 1:
The wrapper incorporates a double-curved geometry with a first radius of curvature at the bottom corner region and a second radius of curvature at the side region. This multi-radius curved design allows the wrapper to conform to the natural wear patterns and stress distributions, reducing uneven wear at bottom corners and surfaces while extending bucket service life.
2Object-affected harmful factors
If a bucket with excessive rubbing or impingement of excavation materials is used, then the structural strength is maintained, but the material resistance and wear increase
Solution Approach 1:
The wrapper design applies different radius of curvature values to different regions: a first radius at the bottom corner region and a second radius at the side region. This local differentiation optimizes material flow characteristics at each specific location, reducing rubbing and impingement forces where they occur most, while maintaining overall structural integrity.
3Reliability
If the bottom corners and surfaces of the bucket are designed for strength, then the structural integrity is ensured, but these areas become prone to uneven wear
Solution Approach 1:
The wrapper is formed with a double-curved geometry using a first radius of curvature for the bottom corner region and a second radius of curvature for the side region. This curved design promotes more uniform wear distribution across the wrapper surface by optimizing material flow and contact pressure, while the fabrication complexity is managed through standard forming processes.
Data Source
AI summary
A bucket for a work machine is disclosed. The bucket has a base plate at a top end of the bucket, a lip plate at a bottom end, and a pair of side plates that extend down from the base plate to the bottom end. A wrapper has a first curved portion, having a first radius of curvature, that extends to a first flat portion. The first flat portion extends to a second curved portion having a second radius of curvature. The first flat portion extends between the first curved portion and the second curved portion.