Machine Bucket Curved Wrapper Angles
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Solution Overview
Problem
Existing machine buckets lack optimal design parameters that balance material handling efficiency and capacity, leading to inefficiencies in loading, unloading, and material adherence, which affects performance and operational costs.
Innovation Solution
A machine bucket design featuring specific geometric parameters such as a curved upper portion with a central angle of 109.5° to 110.5°, a curved lower portion with a central angle of 44.5° to 45.5°, a depth-to-length ratio of 0.69 to 0.72, and strategically positioned cutting edges, which enhance material engagement and reduce adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bucket uses conventional geometric parameters, then the design is simpler and easier to manufacture, but material handling efficiency and capacity are suboptimal
Solution Approach 1:
The patent applies parameter changes by specifying precise geometric parameters for the bucket wrapper, including a central angle θ1 between 40-50 degrees, a central angle θ2 between 100-115 degrees, and a depth-to-length ratio between 0.65-0.75. These optimized parameters improve material engagement and handling efficiency while maintaining manufacturability through clear dimensional specifications.
2Quantity of substance
If the bucket design optimizes for capacity, then more material can be held, but material adherence to the bucket surface increases
Solution Approach 1:
The patent applies spheroidality by designing the wrapper with curved surfaces defined by specific central angles. The curved upper portion with central angle θ2 and curved lower portion with central angle θ1 create a streamlined geometry that reduces material adherence while maximizing capacity. The curvature allows material to flow more smoothly during loading and unloading operations.
Solution Approach 2:
The patent applies local quality by optimizing different portions of the wrapper with specific geometric characteristics. The upper portion has a larger central angle (θ2: 100-115 degrees) for capacity, while the lower portion has a smaller central angle (θ1: 40-50 degrees) for reduced adherence. This localized optimization addresses both capacity and adherence requirements in different regions of the same component.
3Productivity
If the bucket uses optimized geometric parameters, then material handling efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies optimized parameter ranges rather than fixed values, allowing for manufacturing tolerances. The central angles θ1 and θ2 are defined as ranges (40-50 degrees and 100-115 degrees respectively), and the depth-to-length ratio is given as a range (0.65-0.75). This approach maintains the performance benefits of optimized geometry while accommodating normal manufacturing variations.
Data Source
AI summary
A machine bucket may include a wrapper. The wrapper may form a portion of a receptacle for holding material. The wrapper may include a curved upper portion defining an arc. The curved upper portion may have a central angle value (θU) of between approximately 109.5° and 110.5′. The wrapper may also include a curved lower portion defining an arc. The curved lower portion may have a central angle value (θL) of between approximately 44.5° and 45.5°. Such a machine bucket finds particular utility collecting and transporting material that is adherent to itself and the surfaces of the bucket.