Multi-bar Harrow and Hydraulic Finishing Tool for Soil Groove Reduction
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Solution Overview
Problem
Large and complex tillage implements with faster travel speeds face challenges in achieving final soil leveling, often leaving residual grooves in the soil due to larger shanks, which can hinder seedbed preparation.
Innovation Solution
Agricultural tillage implement equipped with a multi-bar harrow and a hydraulic down pressure system for a finishing tool, such as a formed bar basket, to enhance soil tilth and leveling, reducing residual shank grooves and clod size, by applying adjustable down pressure to smooth the soil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cultivators are made wider and use larger shanks to increase tilling efficiency and travel speed, then equipment productivity is improved, but residual grooves are left in the soil that hinder final soil leveling
Solution Approach 1:
The soil finishing system is segmented into multiple independent components: a multi-bar harrow with several transverse bars and a separate finishing tool (formed bar basket). Each segment works independently to address different aspects of soil leveling, with the harrow breaking up clods and the finishing tool smoothing residual grooves, allowing the system to maintain both productivity and leveling precision
Solution Approach 2:
The multi-bar harrow acts as an intermediary component between the main tillage tools and the finishing tool. It processes the soil by breaking clods and filling grooves created by large shanks, preparing the soil for final smoothing by the finishing tool. This intermediary step enables the system to maintain high productivity while achieving precise soil leveling
2Productivity
If faster travel speeds are used to improve equipment productivity, then efficiency is increased, but the ability to achieve final soil leveling deteriorates
Solution Approach 1:
The system uses dynamic elements including spring-mounted bars in the multi-bar harrow that can flex and adapt to varying soil conditions and travel speeds. The hydraulic down pressure system dynamically adjusts the force applied by the finishing tool based on soil conditions, allowing effective soil leveling even at faster travel speeds without compromising precision
3Manufacturing precision
If a hydraulic down pressure system is added to control the finishing tool, then soil leveling precision is improved, but device complexity increases
Solution Approach 1:
A hydraulic down pressure system is integrated to control the finishing tool, providing precise and adjustable downward force on the formed bar basket. This hydraulic mechanism enables accurate soil leveling by controlling the contact pressure between the finishing tool and soil, achieving high soil leveling precision while managing the added complexity through efficient hydraulic actuation
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 effectively improves soil leveling and seedbed preparation by reducing residual grooves and clod size, enhancing the overall efficiency of tillage operations.
Implementation Method 1
a down pressure system that applies down pressure to a finishing tool, which may be implemented as a formed bar basket
Data Source
AI summary
An agricultural tillage implement is provided with a soil finishing system that includes a multi-bar harrow and a down pressure-controlled finishing tool that are arranged with respect to each other to enhance soil tilth and leveling, including reducing residual shank grooves in tilled soil, to improve seed bed preparation.