Reversible Decoupler for Combine Harvester Grain Elevator Blockage Removal
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Solution Overview
Problem
Existing combine harvesters face issues with grain blockages in the grain elevator, leading to grain loss and operator intervention time, as the current method of removing blockages involves opening a hatch and dropping grains, which is inefficient.
Innovation Solution
A combine harvester equipped with a reversible decoupler mechanism that allows the clean grain augers to be decoupled from the drive axle while keeping the grain elevator operational, enabling the elevator to remove blockages without grain loss and with minimal operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hatch is opened to remove blocked grains, then the blockage is removed, but grain loss occurs and operator intervention time increases
Solution Approach 1:
The invention extracts the problematic component (clean grain auger) from the system during blockage removal. By decoupling the auger from the drive axle, the system isolates the grain delivery mechanism while maintaining elevator operation, allowing blockage removal without opening the hatch and preventing grain loss.
Solution Approach 2:
The invention segments the drive system by introducing a decoupler mechanism that separates the control of the clean grain auger from the grain elevator. This allows independent operation of the elevator during auger decoupling, enabling selective activation of the elevator for blockage removal while keeping the auger stationary.
2Reliability
If the hatch is opened to remove blocked grains, then the blockage is removed, but operator intervention time increases
Solution Approach 1:
The invention enables the system to perform blockage removal autonomously. The operator simply activates the decoupler mechanism and the elevator from the cabin, and the system automatically removes the blockage through elevator operation without requiring the operator to physically intervene at the hatch.
Solution Approach 2:
The invention introduces the decoupler mechanism as an intermediary device between the operator and the blockage removal process. This mediator enables remote control of the auger-elevator relationship, allowing the operator to initiate blockage removal from the cabin without direct physical interaction with the grain flow path.
3Loss of substance
If the clean grain auger is decoupled from the drive axle, then blockage removal is enabled without grain loss, but the system complexity increases
Solution Approach 1:
The invention introduces dynamic controllability to the previously fixed drive connection. The decoupler mechanism allows the connection between the clean grain auger and drive axle to be dynamically changed (coupled or decoupled) based on operational needs, transforming a static system into a flexible one that can adapt to blockage conditions.
Solution Approach 2:
The decoupler mechanism serves multiple functions: it enables normal coupled operation during standard harvesting, allows decoupled operation during blockage removal, and provides a controlled interface between the auger and drive systems. This multi-functionality justifies the added complexity by providing versatile operational modes.
Data Source
AI summary
The combine harvester includes a grain cleaning section and a grain elevator, the cleaning section including one or more clean grain augers configured to deliver clean grains into the grain elevator. The harvester further includes a rotatable drive axle and a transmission system coupled thereto so that the drive axle drives the one or more augers as well as the elevator. The transmission system includes a reversible decoupler mechanism configured to decouple the one or more clean grain augers from the drive axle while not decoupling the elevator from the drive axle. These features enable removing a blockage from the grain elevator, by decoupling the one or more clean grain augers and then activating the elevator to remove the blockage, followed by the re-coupling of the one or more augers.