Adjustable Closing Wheel Assembly for Seed Coverage

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Solution Overview

Problem

Traditional closing wheels in agricultural planters fail to adequately cover the soil over newly planted seeds, especially in areas with existing growth, leading to insufficient ground coverage.

Innovation Solution

A closing wheel assembly with adjustable wheels that vary in angle and pitch, allowing for improved soil pinching and coverage, featuring a frame connected to a planter with multiple wheels and adjustment mechanisms for lateral positioning and pitch adjustment, enabling effective soil coverage up to 30°.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional closing wheels are used, then the structure is simple, but the ground coverage is insufficient

Engineering Contradiction:
Improveground coverageVSAvoidwheel assembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The closing wheel assembly is divided into multiple independent wheel units (first closing wheel and second closing wheel) that can be adjusted independently. Each wheel can be positioned at different lateral locations and pitch angles, allowing segmented control over different sections of the ground to achieve complete coverage while maintaining modular simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The closing wheels are made dynamically adjustable through lateral positioning mechanisms and pitch angle adjustment mechanisms. This allows the wheels to adapt their configuration based on ground conditions, achieving reliable ground coverage while maintaining operational simplicity through standardized adjustment components

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If fixed angle closing wheels are used, then the device is simple to operate, but the adaptability to different soil conditions is poor

Engineering Contradiction:
Improvesoil condition adaptabilityVSAvoidwheel adjustment operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The closing wheel system enables parameter changes by allowing adjustment of lateral positioning and pitch angles to optimize performance for different soil conditions. The standardized adjustment mechanisms maintain ease of operation while achieving adaptability across varying agricultural environments

Inventive Principle:
Principle #35Parameter changes

3Reliability

If multiple closing wheels with adjustment mechanisms are used, then the ground coverage is improved, but the device complexity increases

Engineering Contradiction:
Improveseed coverageVSAvoidadjustment mechanism structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The adjustment mechanisms are segmented into standardized lateral positioning components and pitch angle adjustment components that can be independently configured for each wheel. This modular approach ensures complete seed coverage while managing device complexity through reusable, standardized parts

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment mechanisms are designed with universal, multi-functional components that can be applied across different wheel positions and configurations. This standardization reduces overall device complexity while achieving reliable coverage through multiple adjustable wheels

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11089723B2Closing wheel assemblies
Publication Date: 2021.08.17 SMITH MARK
  • US11089723B2 patent drawing
  • US11089723B2 patent drawing
  • US11089723B2 patent drawing

AI summary

A closing wheel assembly used in planting or other agricultural endeavors. The closing wheel assembly is configured to allow each individual wheel to both vary in angle having an increased pitch so as to more effectively pinch the soil (or other ground cover) so as to fully cover the newly planted seed. The closing wheel assembly is used in connection with a planter so as to more effectively close the trench formed by the planter and fully cover the newly planted seed. The closing wheel generally includes an arm extending behind the planter and over a first closing wheel. The present invention comprises a second closing wheel provided behind the first closing wheel where the second closing wheel may be positioned at a different angle and provided at an approximate 5° pitch to effectively pinch the soil back in place after planting.