Disc Harrow Scraper on Flexible Spring

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Solution Overview

Problem

Conventional disc harrows lack an effective system for removing soil adhered to disc elements due to soil characteristics and moisture, which affects their performance in soil breaking and mixing operations.

Innovation Solution

A disc holder construction with a scraper assembly affixed to a flexible disc scraper arm, which is attached to a disc holder spring that can freely bend to fit soil depressions, allowing for timed operation with the disc element to remove adhering soil.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional fixed axle disc harrow is used, then the disc elements can perform soil breaking and mixing operations, but soil adheres to the disc element surfaces due to soil features and moisture, reducing effectiveness

Engineering Contradiction:

Improvesoil breaking and mixing effectivenessVSAvoidsoil adhesion to disc elements

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The scraper system is segmented and attached to each individual disc holder spring rather than being rigidly coupled to the framework. Each scraper assembly (comprising scraper arm, scraper element, and holder spring) operates independently to clean its corresponding disc element, allowing localized adaptation to soil conditions and effective removal of adhered soil without affecting other discs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The disc holder spring is designed to be flexible and resilient rather than rigid, allowing it to freely bend and adapt to soil depressions while maintaining disc element positioning. This dynamic capability enables the scraper assembly to move with the disc during rotation and effectively scrape adhered soil from the disc surface throughout the rotation cycle.

Inventive Principle:

Principle #15Dynamics

2Object-generated harmful factors

If a rigid scraper system coupled to the framework is used, then soil can be scraped from discs, but the disc holder spring cannot freely bend to fit soil depressions

Engineering Contradiction:

Improvesoil removal from discsVSAvoiddisc holder spring flexibility

Core Design Contradiction:

Object-generated harmful factorsVSAdaptability or versatility

Solution Approach 1:

The scraper system is divided into independent modular units, with each scraper assembly (scraper arm, scraper element, and holder spring) attached to individual disc holders rather than being rigidly coupled to the framework. This segmentation allows each unit to operate independently, maintaining scraper functionality while preserving the flexibility and adaptability of each disc holder spring to local soil conditions.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If independent disc elements are used, then each disc can fit soil depressions, but no system is provided for removing adhered soil

Engineering Contradiction:

Improvedisc element independenceVSAvoidsoil adhesion

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The scraper system is segmented into independent modular units, with each scraper assembly attached to individual disc holder springs rather than being rigidly coupled to the framework. This segmentation allows each unit to operate independently, maintaining the independence and adaptability of each disc element while providing localized soil removal capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each disc holder spring with its attached scraper assembly serves itself by independently cleaning its corresponding disc element. The resilient holder spring allows the scraper to automatically adapt to the disc's position and motion, providing self-regulating soil removal without requiring external control or rigid framework coupling.

Inventive Principle:

Principle #25Self-service

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

The solution enables reliable and safe removal of soil from disc elements, enhancing the soil cultivating process by allowing the disc holder spring to fit soil depressions and supporting a scraper assembly that effectively cleans the disc elements.

Implementation Method 1

a disc holder spring in turn fixed to a framework of a disc harrow... the disc holder spring being adapted to be freely bent to fit the soil or ground depressions

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

a scraper assembly for removing soil adhering to a said disc element... supports the scraper assembly and is driven in a timed manner with respect to the disc element

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS10165721B2Disc holder and scraper construction for disc harrows

Publication Date: 2019.01.01 BIANCHI SRL

AI summary

A disc holder and scraper construction for disc harrows comprises a disc element fixed to a rotary hub, which is supported by a disc holder spring in turn fixed to a framework of a disc harrow, the disc holder construction further comprising a scraper assembly for removing soil adhering to a disc element, the scraper assembly being affixed to a flexible disc scraper arm, which is in turn affixed to the disc holder spring; the disc scraper arm, affixed to the disc holder spring and not to the harrow framework, supports the scraper assembly and is driven in a timed manner with respect to the disc element.