Interlocking Wear Plates for Paving Machine Feeder Floor Protection
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Solution Overview
Problem
Paving machine feeder floors experience significant wear due to high-temperature bituminous aggregates and rough particles, with existing wear plates lacking interlocking features to enhance protection and stability.
Innovation Solution
A feeder floor protection system featuring wear plates with frame and plate abutment features that restrict movement, including non-contiguous lateral and fore-and-aft surfaces, providing interlocking functionality and improved stability, and center guards for secure fastening and reduced hardware exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wear plates are positioned along the feeder floor to protect against wear, then the feeder floor protection is improved, but the wear plates lack interlocking features causing instability and movement
Solution Approach 1:
The wear plate is divided into multiple segments or sections, each with its own abutment features. This segmentation allows each section to be independently stable while collectively providing comprehensive protection across the feeder floor surface.
Solution Approach 2:
The abutment features are nested within the structure of the wear plate itself, with lateral movement restriction surfaces and fore-and-aft movement restriction surfaces integrated into the plate body. This nested design provides interlocking capability without adding external components.
2Ease of operation
If wear plates are designed with simple tab engagement for ease of installation, then installation ease is improved, but the plates lack interlocking features between laterally positioned plates
Solution Approach 1:
Multiple functional features (lateral movement restriction, fore-and-aft movement restriction, and plate-to-plate interlocking) are merged into a single integrated abutment structure. This combination provides comprehensive interlocking functionality without requiring multiple separate components or complex assembly steps.
Solution Approach 2:
The abutment features are designed to automatically interlock adjacent wear plates together through their complementary lateral and fore-and-aft movement restriction surfaces, eliminating the need for additional fastening hardware or complex installation procedures.
3Stability of the object's composition
If wear plates are secured with multiple fasteners for stability, then the stability is improved, but hardware exposure increases and installation time increases
Solution Approach 1:
Traditional fasteners are extracted from the design, replaced by self-interlocking abutment features that provide stability through geometric constraints rather than mechanical fastening elements. This eliminates hardware exposure and reduces installation time.
Solution Approach 2:
The abutment features act as intermediary structures between the wear plate and the feeder floor, providing the necessary stability and restraint through their lateral and fore-and-aft movement restriction surfaces without requiring additional fastening hardware.
Data Source
AI summary
A feeder floor protection system for a paving machine includes at least a first pair of wear plates covering a majority of a feeder floor. Each wear plate has at least two frame abutment features and at least two plate abutment features. Each plate abutment feature includes at least two non-contiguous lateral movement restriction surfaces offset from a centerline of the paving machine and at least one fore and aft movement restriction surface in a plane perpendicular to the centerline. The lateral movement restriction surfaces of a first plate of the pair of wear plates abut the lateral movement restriction surfaces of a second plate of the pair of wear plates. The fore and aft movement restriction surface of the first plate abuts the fore and aft movement restriction surface of the second plate.