Excavator Bucket Side Plate Segmentation for Penetration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing buckets for earthmoving machines face challenges in achieving efficient penetration into the ground during excavation, leading to increased excavation resistance and reduced efficiency.
Innovation Solution
The bucket design includes a bottom plate with a recessed portion and a front lip, where the side plates are angled to reduce the length of the side plate that digs into the ground, and the curvature of the recessed portion is adjusted to minimize penetration resistance, allowing for improved penetration performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the side plate is made longer to increase bucket capacity, then the bucket can hold more soil, but the penetration resistance increases and excavation efficiency decreases
Solution Approach 1:
The side plate is segmented into an upper side plate and a lower side plate that can move independently. The lower side plate is made shorter and more movable to reduce penetration resistance, while the upper side plate maintains longer length for capacity. This segmentation allows each portion to optimize its function separately.
Solution Approach 2:
The side plate is designed with dynamic characteristics, allowing the lower side plate to move freely during penetration to reduce resistance, while the upper side plate provides structural support. The side plate transitions from a static structure to a dynamic one that adapts during operation.
2Volume of moving object
If the bucket is designed with a deeper shape to increase capacity, then more soil can be excavated, but the penetration into ground becomes more difficult
Solution Approach 1:
The bucket depth is segmented into an upper deep portion and a lower shallow portion. The lower portion is made shallower to reduce penetration force requirements, while the upper portion maintains greater depth for volume. This vertical segmentation resolves the contradiction between volume and penetration force.
Solution Approach 2:
Different portions of the bucket have different local qualities - the lower side plate is made shorter and more movable to reduce penetration resistance, while the upper portions maintain deeper shapes for capacity. Each local region is optimized for its specific functional requirements.
3Productivity
If the side plate is made shorter to reduce penetration resistance, then excavation becomes easier, but the bucket capacity is reduced
Solution Approach 1:
The side plate is divided into upper and lower segments with different lengths. The lower side plate is shorter to reduce penetration resistance and improve excavation ease, while the upper side plate is longer to maintain bucket capacity. This segmentation allows both requirements to be satisfied simultaneously.
Solution Approach 2:
The solution moves from a one-dimensional length reduction to a two-dimensional configuration where the side plate has different lengths at different vertical positions. The upper side plate extends further than the lower side plate, creating a stepped configuration that satisfies both capacity and penetration requirements.
Data Source
AI summary
A bottom plate includes a first deepest portion at which a length from a first reference straight line to the bottom plate is maximum. The first reference straight line passes through a front end portion of a front lip and a position at which a rear end portion of the bottom plate is contiguous to each of side plates. The first deepest portion is located on a second reference straight line orthogonal to the first reference straight line. A side end portion of each of the side plates is provided with a recessed portion. The recessed portion includes a second deepest portion at which a length from the first reference straight line to the recessed portion is maximum. The second deepest portion is located on the second reference straight line or located close to the front lip with respect to the second reference straight line.