Concave Assembly Plugging Prevention via Rotating Separator Bars
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Solution Overview
Problem
Agricultural combines face issues with crop material plugging the concave, reducing capacity and threshing ability, especially when harvesting green or high-volume crops, and require switching between different concaves for varying grain sizes.
Innovation Solution
A double concave assembly with pivotally connected frames and rotating members, featuring a crossbar and separator bars, allows for easy installation and adjustment to prevent plugging and accommodate different crop sizes, enabling efficient grain separation and threshing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single concave design is used, then device complexity is reduced, but adaptability to different crop sizes decreases
Solution Approach 1:
The patent implements a universal concave assembly that can accommodate both small grain crops and large grain crops through a single device. The frame structure includes mounting positions and adjustment mechanisms that allow the same concave to be used for different crop types, eliminating the need for multiple specialized concaves while maintaining adaptability.
2Productivity
If crop material plugging is prevented through design modifications, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent employs dynamic elements within the concave assembly, including rotatable members and adjustable components that can move or reposition during operation. These dynamic features help prevent plugging by allowing material to be redirected or redistributed through the concave, maintaining high threshing capacity without requiring overly complex mechanical systems.
3Adaptability or versatility
If frequent concave changes are required, then adaptability to different crops is improved, but loss of time increases
Solution Approach 1:
The concave assembly is designed with pre-configured mounting positions and adjustment mechanisms that allow for quick transitions between different crop types. The frame structure includes ready-to-use mounting points and the ability to adjust the concave position without requiring complete removal or complex reconfiguration, thereby reducing the time lost during crop changes.
4Ease of manufacture
If the concave structure is simplified, then ease of manufacture is improved, but reliability in preventing plugging decreases
Solution Approach 1:
The concave assembly is divided into segmented components, including multiple separator bars and modular frame sections. This segmentation allows for easier manufacturing of individual parts while maintaining the overall functionality to prevent plugging. The segmented design also enables better material flow distribution, enhancing reliability without requiring complex integrated structures.
Data Source
AI summary
A concave assembly for an agricultural machine includes a frame pivotally connected to a structural component and a concave connected to the frame. The frame includes a trunnion having a front end and a rear end. A front arm and a rear arm are connected to the trunnion. A crossbar extends between the front arm and the rear arm. A rotating member rotatably connected to the crossbar. The concave includes a first outer support and a second outer support. An inner support is positioned between the first outer support and the second outer support. A plurality of separator bars extend between the first outer support and the second outer support.