Modular Beet Harvester Flail Hubs for Reduced Top Damage
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Solution Overview
Problem
Existing beet top cleaning devices are complex and prone to causing frequent damage to the beet tops during harvesting, necessitating a simpler and more damage-reducing solution for beet harvesters.
Innovation Solution
A beet head cleaning device with a simple construction, compact axial design, and mechanical and electrical/hydraulic coupling means, featuring rotatable flail hubs driven by a motor and gearbox, with flails that minimize kinetic energy impact on the beet heads, allowing for separate handling and reduced damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complex beet top cleaning devices are used, then cleaning effectiveness is improved, but device complexity and damage to beet top increase
Solution Approach 1:
The cleaning device is divided into multiple independent flail hubs (first and second flail hubs) that can be separately mounted and operated. Each hub contains multiple flails that work independently, allowing the system to achieve comprehensive cleaning coverage while maintaining simplicity in each individual component. This segmentation resolves the contradiction by distributing the cleaning function across multiple simple units rather than one complex unit.
Solution Approach 2:
Instead of using a single complex cleaning mechanism, the invention uses multiple simple flail hubs with flails that rotate in opposite directions. The flails on the first hub rotate in one direction while flails on the second hub rotate in the opposite direction, creating a coordinated cleaning action from multiple angles. This inversion approach simplifies each individual hub design while achieving effective cleaning through the combined action of multiple hubs.
2Power
If high kinetic energy flails are used, then cleaning power is improved, but damage to beet top increases
Solution Approach 1:
The flails are designed with specific local characteristics - they have a relatively small width compared to their length, and are positioned at specific distances from each other on the flail hub. This local quality configuration allows the flails to effectively remove beet tops while minimizing contact area and duration with the underlying beet, thereby reducing damage. The local quality of each flail's dimensions and positioning optimizes the balance between cleaning power and damage prevention.
Solution Approach 2:
The invention uses multiple flails on each hub rather than a single large flail, distributing the cleaning action across multiple smaller elements. This partial action approach achieves sufficient cleaning power through cumulative effect of multiple flails while each individual flail applies less force, reducing the risk of damage to the beet top. The excessive number of flails ensures thorough cleaning without requiring each flail to be overly powerful.
3Ease of operation
If modular design with separate handling is implemented, then ease of operation is improved, but manufacturing complexity increases
Solution Approach 1:
The cleaning device is designed as a modular assembly of independent flail hubs that can be manufactured separately and then mounted onto the harvester frame. Each flail hub is a self-contained unit with its own flails, allowing for simplified manufacturing of individual components. This segmentation enables easier assembly and operation while the standardized modular design actually simplifies manufacturing through repetition of identical or similar components rather than increasing complexity.
Solution Approach 2:
The flail hubs are designed as universal components that can be mounted in different positions (first and second hubs at different locations) and serve the same cleaning function. This universality allows for standardized manufacturing of identical hub assemblies that can be interchangeably installed, simplifying the manufacturing process through economies of scale while providing operational flexibility. The multi-functional capability of the same component design reduces manufacturing complexity.
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 simplifies the operation of beet harvesters, reduces damage to the beet tops, and enables a more efficient cleaning process by using a modular design with reduced kinetic energy impact from flails, enhancing the overall harvesting efficiency and minimizing damage.
Implementation Method 1
designed to remove leaves or leaf bases from beets 8 embedded in the ground
Implementation Method 2
when they are in the lower half of their path, converge on each other
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The beet-head cleaning device for a beet harvesting machine comprises a frame (20), two flail hubs (22) rotatable about an axis, flails (30) which are designed to separate leaves from the beets stuck in the ground, and a drive (24) for driving the flail hubs with respect to the frame. The drive comprises a motor (26) and a transmission (28), and the flails are mounted to be movable on the flail hubs. The motor and the transmission are mounted on the frame. The frame has a mechanical coupling means (30) for coupling the frame (20) to a beat harvesting machine. The beet-head cleaning device has electric and/or hydraulic coupling means (34) for coupling the motor to an electric and/or hydraulic energy source. The beet-head cleaning device is a module which can be manipulated separately from the beet harvesting machine.