Cage Roller Scraper Bar Layout for Anti-Clogging Soil Cultivation

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Solution Overview

Problem

Cage rollers used in soil cultivation become clogged with debris such as soil, clay, and biomass, leading to premature stoppage of cultivation, labor-intensive cleaning, and increased costs.

Innovation Solution

A device comprising scraper bars and a fastening system that attaches to the roller at a distance, allowing adjustable spacing to prevent adhesion, featuring adjustable scraper bars and support rails for effective debris removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cage roller is used for soil cultivation in wet and/or clayey conditions, then the soil cultivation function is maintained, but debris accumulates on the roller causing clogging and premature stoppage

Engineering Contradiction:
Improvesoil cultivation continuityVSAvoidroller clogging
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The scraper bar is positioned to scrape debris from the roller surface before it accumulates to clogging levels. By performing the cleaning action continuously during operation rather than after stoppage, the roller maintains its functional surface, preventing premature stoppage and ensuring continuous soil cultivation productivity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The scraper bar is designed to automatically remove debris from the roller during normal operation without requiring external intervention or stopping the machine. The mechanical contact between the scraper bar and rotating roller creates a self-cleaning system that maintains the roller's functionality continuously, making the system self-sufficient against clogging.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the cage roller operates without a cleaning device, then the device complexity is low, but cleaning becomes labor-intensive and time-consuming

Engineering Contradiction:
Improvecleaning effortVSAvoidroller structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The cleaning function is separated from the main roller structure by using a distinct, attachable scraper bar component. This segmentation allows the cleaning function to be added independently without redesigning the entire roller system, maintaining structural simplicity while enabling automatic cleaning operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The scraper bar acts as an intermediary element between the roller surface and the debris material. This simple intermediate component transfers the cleaning function to the roller without requiring complex integrated systems, reducing overall device complexity while effectively addressing the cleaning need.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the scraper bar is positioned close to the roller surface, then debris removal effectiveness is high, but the risk of damage from stones and debris increases

Engineering Contradiction:
Improvedebris removal efficiencyVSAvoidscraper bar durability
Core Design Contradiction:
ProductivityVSStrength

Solution Approach 1:

The scraper bar is designed with adjustable positioning that allows dynamic adaptation to different operating conditions. The distance between the scraper bar and roller surface can be optimized to balance cleaning effectiveness with damage prevention, and the scraper bar can be replaced when worn, maintaining system productivity while managing durability risks.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The scraper bar is designed as a replaceable, cost-effective component that can withstand wear and potential damage from stones and debris. Rather than designing an extremely durable permanent component, the system uses affordable scraper bars that can be periodically replaced, maintaining high debris removal efficiency while managing the inherent risk of damage through economical replacement rather than prevention.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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

Prevents soil buildup, allows cultivation in damp conditions, reduces cleaning time, and maintains efficient soil cultivation operations.

Implementation Method 1

The device comprises at least one scraper bar (14), in particular several scraper bars (14) arranged side by side, for removing deposits from the roller (12)

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4666821A1Device for preventing adhesions to a bar roller and a soil working machine
Publication Date: 2025.12.24 ROHN PETER
  • EP4666821A1 patent drawingFigure 1
  • EP4666821A1 patent drawingFigure 2
  • EP4666821A1 patent drawingFigure 3

AI summary

The invention relates to a device (10) for preventing adhesion to a roller (12) and a soil cultivation machine with such a device (10).