Oblique Corner Half Arrow for Bucket Lip Wear Synchronization
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Solution Overview
Problem
Ground engaging tools (GET) for earth-moving equipment, such as bucket teeth, wear out quickly due to abrasive environments and high impact forces, leading to structural failure and costly downtime for replacement and repair, with corner half arrows often wearing out before intermediate ones, causing premature damage to the bucket lip.
Innovation Solution
A corner half arrow design with an obliquely extended back portion and side wear area, allowing it to be replaced and attached to the bucket lip, ensuring it wears out simultaneously with intermediate half arrows, reducing material removal from the bucket lip and maintaining the bucket's functionality without altering its front geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If corner half arrows are made with traditional straight back portions, then the bucket lip is protected initially, but the corner half arrows wear out before intermediate half arrows, causing premature damage to the bucket lip
Solution Approach 1:
The back portion of the corner half arrow is extended obliquely rearwards at an angle of more than 90 degrees to the first longitudinal axis, adding a dimensional extension that increases the wear resistance and service life of the corner half arrow, allowing it to last as long as intermediate half arrows
2Reliability
If corner half arrows are replaced frequently due to wear, then the bucket lip remains protected, but downtime for service and repair increases
Solution Approach 1:
The corner half arrow is designed with an extended back portion that provides additional material and wear resistance in advance, allowing it to withstand longer service periods before requiring replacement, thereby reducing frequent maintenance interruptions
3Ease of repair
If material is removed from the bucket lip to accommodate extended corner half arrows, then the corner half arrows can be replaced, but the bucket lip structure is compromised
Solution Approach 1:
The corner half arrow is designed as a separate, removable component with an extended back portion that can be independently replaced without compromising the overall bucket lip structure, allowing maintenance while preserving structural integrity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design extends the life of the bucket by synchronizing the wear-out of corner and intermediate half arrows, reducing maintenance stops and preventing destructive wear on the bucket lip, thus enhancing the bucket's availability and productivity.
Implementation Method 1
Ground engaging tools (GET) for earth-moving equipment, such as bucket teeth, wear out quickly due to abrasive environments and high impact forces
Implementation Method 2
The new corner half arrow may subsequently be attached to the lip by welding or by a connection system
Data Source
Figure 1~2
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AI summary
A corner half arrow 1 for a lip 2 of a bucket 3, wherein the corner half arrow 1 comprises a front wear portion 4, a side wear portion 5, a back portion 6 for attachment to the lip 2 of the bucket 3 and an inner side portion 7 for facing an adjacent intermediate half arrow 8, wherein the inner side portion 7 extends along a first longitudinal axis 9, and wherein the back portion 6 extends along a second longitudinal axis 10, and wherein the second longitudinal axis 10 forms a first angle 17 of more than 90 degrees to the first longitudinal axis 9.