Handheld Harvester Threshing Drum and Screening Assembly
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Solution Overview
Problem
Current systems for determining moisture levels in grain and seed crops require inefficient use of large equipment for sampling across large areas, and there is a need for more efficient methods to harvest smaller-scale crops without the need for complex machinery.
Innovation Solution
A handheld harvester with a rotating threshing drum and screening assembly that includes teeth and paddles to strip seeds from plants, allowing seeds to pass through screens while ejecting plant material, and a collection chamber for weighing and moisture analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If large equipment like combine is used to take samples in several different locations, then sampling coverage is improved, but equipment weight and operational complexity increase
Solution Approach 1:
The large-scale sampling task is segmented into multiple small-sample collections using a lightweight handheld device. Instead of using one large combine for all locations, the system divides the sampling into multiple portable operations at different field locations, reducing equipment weight while maintaining comprehensive coverage
Solution Approach 2:
The sampling approach transitions from horizontal expansion (large combine covering area) to vertical integration (handheld device with integrated threshing, screening, and collection functions). By stacking functions vertically in a compact device, the system achieves multi-location sampling capability without requiring large equipment
2Productivity
If large and complex agricultural machinery is used for harvesting, then harvesting capacity is improved, but device complexity and cost increase
Solution Approach 1:
The handheld harvester integrates multiple functions (threshing, screening, seed collection, moisture detection, and weighing) into a single portable device. This multi-functional design enables the small device to perform complete harvesting operations that traditionally required multiple separate machines, maintaining productivity while reducing complexity
Solution Approach 2:
The patent merges previously separate harvesting operations (threshing drum, screening assembly, collection chamber, moisture meter, and scale) into one integrated handheld unit. By combining these components in a compact configuration, the system achieves full harvesting capability without the complexity of coordinating multiple large machines
Data Source
AI summary
The present disclosure is a handheld harvester apparatus including a threshing drum configured to rotate. The harvester may further include a plurality of teeth connected to the threshing drum and configured to strip seeds from a head of a plant. The harvester also includes a screening assembly coupled to the threshing drum. The screening assembly is configured to receive seeds and plant material from the threshing drum and to eject the plant material from the harvester and direct the seeds downward. The harvester further includes a first screen configured to receive the seeds from the screening assembly and to allow seeds sized below a predetermined threshold to pass through the first screen and to prevent plant material exceeding the predetermined threshold to pass through the first screen. The harvester may further include a collection chamber coupled to the first screen and configured to receive the seeds.