Direct Drive Seed Metering Device with Toroidal Motor
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Solution Overview
Problem
Existing seed metering devices for row crop sowing machines are bulky, complex, and expensive due to the need for multiple driving assemblies and mechanical transmission components, which leads to power loss, noise, vibrations, and high maintenance costs, and lacks individual disc adjustment capabilities.
Innovation Solution
A direct drive seed metering device with a toroidal motor directly coupled to the seed metering disc, eliminating intermediate transmission elements and using vacuum or high pressure for seed capture and release, resulting in reduced power loss, noise, and maintenance, while allowing for a slim design and partial motor protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hydraulic systems with sophisticated electronic control means are used to drive each disc individually, then individual disc adjustment capability is improved, but device complexity and maintenance cost increase
Solution Approach 1:
The patent replaces complex hydraulic systems with sophisticated electronic control with a simplified direct-drive mechanical system. Each metering disc is equipped with its own direct-drive motor that couples directly to the disc, eliminating the need for hydraulic pumps, valves, and electronic control circuits while maintaining individual disc adjustment capability through simple mechanical speed control
Solution Approach 2:
The patent extracts and removes the complex hydraulic transmission system and electronic control means from the seed metering device. By eliminating these intermediate transmission elements and replacing them with direct-drive motors on each disc, the system achieves individual disc control without the burden of complex centralized hydraulic infrastructure
2Speed
If intermediate transmission elements such as gears, belts, or reductions are used between motor and metering disc, then speed control is improved, but power loss and device complexity increase
Solution Approach 1:
The patent eliminates mechanical transmission elements like gears, belts, and reduction mechanisms by using direct-drive motors that couple directly to the metering disc. This substitution removes the intermediate transmission chain, thereby eliminating power losses associated with mechanical friction, gear meshing, and belt slip while simplifying the overall drive system
Solution Approach 2:
The patent segments the drive system by providing individual direct-drive motors for each metering disc rather than using a centralized transmission system. This segmentation allows each disc to be driven independently without power loss through intermediate transmission elements, as each motor-disc pair forms a self-contained drive unit
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 enhances efficiency, reduces maintenance costs, and improves operational life by eliminating mechanical transmissions and allowing for simpler, more economic equipment design with reduced power requirements.
Implementation Method 1
the means for capturing and releasing the seeds is operated by either vacuum or high pressure
Implementation Method 2
the means for capturing and releasing the seeds is operated by either vacuum or high pressure
Data Source
AI summary
A direct drive seed metering device for sowing machines operated by vacuum or high pressure and driven by a coaxial electric motor (03), comprising a seed metering disc (02) for capturing seeds (07) from a reservoir (21) and laying them in a controlled manner in a furrow in the soil, wherein the coaxial electrical motor couples directly and coaxially to the metering disc without the need for intermediate transmission elements, redactors, gears or timing belts, and where said coaxial electrical motor is a toroidal electric motor with a hollow rotor shaft (03.1), which fluidly connects seed capturing means of the seed metering disc with a vacuum or high pressure generating means.