Work Vehicle Bucket Curved Bottom Surface Reduces Excavating Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bucket designs for work vehicles experience high excavating resistance due to the bottom surface protruding below the trajectory of the teeth, leading to increased contact pressure with the ground during excavation.
Innovation Solution
The bucket design features a main bucket body with a curved bottom surface and a cutting edge part, where the first curved surface has a larger curvature radius positioned outside the bucket body, allowing it to follow the trajectory of the teeth and reduce contact pressure, while the second curved surface is positioned closer to the back surface, enabling soil to flow freely and reducing excavating resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the bottom surface part of the main bucket body is made protruding lower than the trajectory of the teeth, then the bucket structure is simplified and easier to manufacture, but the bottom surface part moves while being firmly pressed against the ground generating considerable excavating resistance
Solution Approach 1:
The bottom surface part is designed with a curved shape following a specific trajectory arc, where the curvature radius is set to match the wrist radius. This curved configuration allows the bottom surface to naturally follow the motion path during excavation, preventing excessive ground contact and reducing excavating resistance while maintaining structural integrity.
Solution Approach 2:
The invention specifies precise geometric parameters for the bottom surface curvature, setting the curvature radius equal to the wrist radius and positioning the center of curvature at a specific location. By optimizing these parameters, the bottom surface trajectory matches the natural motion path, reducing ground contact pressure and excavating resistance.
2Productivity
If the first curved surface part is arranged along the reference curved surface, then contact pressure with the ground is reduced, but the curvature radius must be precisely controlled to match the wrist radius
Solution Approach 1:
The invention establishes a direct relationship between the bottom surface curvature radius and the wrist radius, setting them equal. This parameter optimization reduces contact pressure while providing a clear design guideline that balances manufacturing precision requirements with performance benefits.
3Productivity
If the connecting part between the first curved surface part and the second curved surface part is positioned more towards the lip part, then soil can flow more freely into the bucket, but the bottom surface part must be carefully positioned relative to the tooth trajectory
Solution Approach 1:
The bottom surface is designed as a curved surface following the wrist rotation trajectory, with the connecting part positioned to facilitate soil flow. The curvature configuration naturally guides soil into the bucket while maintaining the optimal relationship between the bottom surface and tooth trajectory.
Data Source
AI summary
A bottom surface part of a bucket includes first and second curved surface parts. The second curved surface part is positioned closer to a back surface part than the first curved surface part. A second curvature radius of the second curved surface part is shorter than a first curvature radius of the first curved surface part. The center of the first curvature radius is positioned to the outside of a main bucket body when viewed from the side. In a horizontal state, the first curved surface part is arranged along or above a reference curved surface when viewed from the side. A connecting part between the first curved surface part and the second curved surface part is positioned more towards a lip part than the portion of the bottom surface part that is positioned lowest in the bottom surface part in the horizontal state when viewed from the side.