Variable Down-Force Closing Wheel Arms for Narrow Rows
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Solution Overview
Problem
Existing planting equipment, particularly grain drills and air seeders, face challenges in achieving narrow row spacing due to restricted turning and contouring capabilities, increased side load, and wear issues, especially when dealing with high residue and straw, which leads to plugging and inadequate clearance for material flow.
Innovation Solution
The implementation of independently functioning closing wheel arms with variable down force adjustment, which include adjustable mounting arms, wheels, and finger configurations to manage soil and debris, allowing for precise trench closure and debris management, even in narrow spacing configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If staggered double rank configuration is used to achieve narrow row spacing, then row spacing is reduced, but turning and contouring capability is restricted and side load increases
Solution Approach 1:
The closing wheel assembly is divided into independently adjustable components including multiple closing wheels that can be individually positioned and angled. This segmentation allows each wheel to independently manage soil and debris without interfering with adjacent rows, enabling narrow row spacing while maintaining operational flexibility for turning and contouring.
Solution Approach 2:
The closing wheel assembly incorporates adjustable mounting arms with variable down force adjustment and independently controllable wheel positions and angles. This dynamic adjustability allows the operator to optimize the closing wheel configuration for different field conditions, row spacings, and residue levels, preventing plugging while maintaining narrow row spacing capability.
2Length of moving object
If staggered double rank configuration is used for narrow spacing, then row spacing is reduced, but side load and wear are greatly increased
Solution Approach 1:
Each closing wheel is equipped with individual down force adjustment and positioning capabilities, allowing the force application to be locally optimized for each wheel's specific position and function. This localized control distributes the mechanical load more evenly across the assembly, reducing side load on individual components and minimizing wear while maintaining narrow row spacing.
3Object-generated harmful factors
If separate disc scrapers are mounted on openers, then debris removal is improved, but device complexity increases
Solution Approach 1:
The closing wheel assembly integrates multiple functions into a single unified structure: closing wheels that manage soil and debris, adjustable mounting arms for positioning, and built-in mechanisms for down force control. By combining these functions that would traditionally require separate components (closing wheels, scrapers, adjustment mechanisms) into an integrated assembly, the design reduces overall device complexity while effectively managing debris accumulation.
Data Source
AI summary
A closing assembly for an agricultural row unit to be mounted on a trenching implement and configured for trench closing functions of various seeding, fertilizer, soil amendments, and soil working purposes. An example of the closing assembly includes a mounting frame for attaching to the agricultural row unit of the trenching implement. At least one mounting arm having a first end is connected to pivot about a mounting axis on the mounting frame, and a second end movable to different heights in response to pivotable movement of the first end. A handle is operatively associated with the mounting arm and moveable between at least two separate positions corresponding to the different heights of the second end of the mounting arm. At least one closing wheel is rotatably mounted on the second end of the mounting arm to move between each of the different heights.