Segmented Scraper Tooth for Soil Compactor Wear Management
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Solution Overview
Problem
Soil compaction rollers with pad feet face issues as soil material adheres to the drum, impairing performance, and existing solutions require complex and costly replacement of entire scraper devices when teeth wear out, which cannot be easily adjusted to address individual wear patterns.
Innovation Solution
The scraper device is divided into a holding part and a detachable wearing part, allowing for separate replacement of worn areas, reducing material waste and enabling untrained personnel to perform maintenance by using a simple, secure fastening mechanism like a plug connection with a clamping pin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire scraper device is replaced when teeth wear out, then the scraper teeth can be restored to full functionality, but the complexity and cost of maintenance increases significantly
Solution Approach 1:
The scraper tooth is divided into two separate parts: a holding part that remains attached to the beam and a wearing part that can be detached and replaced. This segmentation allows only the worn wearing part to be replaced while the holding part remains in place, significantly reducing maintenance complexity and cost while maintaining full scraper functionality.
2Reliability
If the entire scraper device is replaced when teeth wear out, then the scraper teeth can be restored to full functionality, but the material waste and cost increases
Solution Approach 1:
By segmenting the scraper tooth into a holding part and a wearing part, only the worn wearing part needs to be replaced rather than the entire scraper device. This reduces material waste and maintenance costs while ensuring the scraper teeth maintain full functionality.
Solution Approach 2:
The holding part is designed to be recovered and reused, while only the worn wearing part is discarded and replaced. This approach minimizes material waste by retaining the valuable holding part that does not wear out, thereby reducing overall material consumption and cost.
3Ease of operation
If scraper teeth are readjusted together on a round tube, then the scraper teeth can be easily adjusted, but individual wear patterns cannot be addressed
Solution Approach 1:
The scraper tooth is segmented into a holding part and a wearing part, allowing individual wearing parts to be replaced based on their specific wear patterns. This enables adaptation to individual wear conditions while maintaining the ease of operation through simple detachment and replacement of the wearing part.
Solution Approach 2:
The wearing part can be detached and reattached in different positions along the holding part, allowing dynamic adjustment to compensate for individual wear patterns. This provides versatility in addressing different wear conditions while maintaining operational simplicity.
4Strength
If the holding part is firmly welded to the spar, then the holding part remains securely fixed, but complex adjustment becomes necessary after replacement
Solution Approach 1:
The scraper tooth is divided into a holding part that is firmly welded to the spar for secure fixation and a wearing part that can be easily detached and replaced. This segmentation allows the holding part to maintain strong fixation while the wearing part can be replaced without requiring complex adjustment procedures.
Solution Approach 2:
The wearing part is extracted as a separate replaceable component from the holding part. This allows the holding part to remain firmly welded to the spar for secure fixation, while the wearing part can be replaced independently without requiring complex adjustment or rework of the welded connection.
Data Source
Figure 1~3
Figure 2
Figure 4
AI summary
The device has a beam, at which several stripper teeth (3) are arranged. The stripper teeth have a retaining part (4), which is attached to the beam, and a wearing part (5), which is detachably attached to the retaining part. The retaining part and the wearing part are attached to one another in a form fit manner, where the retaining and the wearing parts are connected using rest and/or bolted connection. The wearing part consists of steel e.g. hardened steel.