Segmented V-Rail Wear Strip for Scarifier Blade Mounting
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Solution Overview
Problem
Existing mounting assemblies for scarifier boards or blades on machines like motor graders require complex and costly wear strips due to their design, which complicates manufacturing and increases costs.
Innovation Solution
A Y-shaped slot jaw member with v-shaped wear strips that include a fastener receiving aperture and a pressing leg, allowing for easy attachment and detachment of blade assemblies using v-shaped wear strips that can be efficiently manufactured through press brake bending or stamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex V-shaped wear strips with sliding surfaces and contact surfaces are used, then the mounting assembly can compensate for tolerance stack ups and wear, but the manufacturing cost and complexity increase significantly
Solution Approach 1:
The wear strip is divided into multiple modular segments (first wear strip segment, second wear strip segment, third wear strip segment) that can be manufactured separately using simple processes and then assembled together. Each segment performs a specific function (engagement, pressing, positioning) while maintaining the overall V-shaped configuration needed for wear compensation.
Solution Approach 2:
The invention changes the geometric parameters of the wear strip segments to achieve the desired functionality. Specifically, the pressing leg is designed with an angle between 30-60 degrees relative to the horizontal plane, and the segments are arranged with specific spacing and orientation to create the effective V-shaped wear compensation geometry without requiring complex monolithic forms.
2Reliability
If complex V-shaped wear strips are used, then the mounting assembly can accommodate tolerance stack ups, but the device complexity increases
Solution Approach 1:
The wear strip is divided into multiple modular segments (first wear strip segment, second wear strip segment, third wear strip segment) that can be manufactured separately using simple processes and then assembled together. Each segment performs a specific function (engagement, pressing, positioning) while maintaining the overall V-shaped configuration needed for wear compensation.
Solution Approach 2:
The wear strip segments are designed to perform multiple functions: the first segment engages with the V-shaped slot, the second segment provides pressing force against the blade assembly, and the third segment provides additional engagement and positioning. This multi-functionality within a simple segmented structure accommodates tolerances without requiring complex geometry.
3Reliability
If traditional wear strip designs are used, then engagement is maintained, but attachment and detachment of blade assemblies becomes difficult
Solution Approach 1:
The wear strip segments are designed with movable and adjustable characteristics. The segments can be independently positioned and secured using fasteners, allowing for dynamic adjustment during assembly and disassembly. This enables easy attachment and detachment of blade assemblies while maintaining stable engagement through the V-shaped configuration and pressing action.
Solution Approach 2:
The wear strip segments act as intermediary elements between the mounting assembly and the blade assembly. They provide a simplified interface that mediates the connection, allowing blade assemblies to be easily attached and detached while maintaining reliable engagement through their V-shaped geometry and pressing mechanism.
Data Source
AI summary
A v-shaped wear strip includes a v-shaped body defining a longitudinal axis, a first end, and a second end disposed along the longitudinal axis. The v-shaped body includes a first attachment portion defining a first aperture, a first pressing portion that forms a first oblique angle with the first attachment portion at the first end, and a first arcuate portion transitioning from the first attachment portion to the first pressing portion at the first end.