Combine Auto-Harvest Control With Abnormality Backoff
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Solution Overview
Problem
Existing combine harvester technologies do not effectively address abnormalities that occur during automatic reaping operations, which can disrupt the harvesting process and require manual intervention to resolve.
Innovation Solution
A combine harvester equipped with a detecting portion to identify abnormalities and a control portion that initiates a backward travel mechanism by a predetermined distance to create space for resolving issues, allowing for automatic reaping resumption once the abnormality is addressed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate control methods are used for combining vehicles and traveling vehicles, then control functions can be specialized, but control system complexity increases
Solution Approach 1:
The patent combines the control functions for combining vehicles and traveling vehicles into a single integrated control device. The control device executes different control routines based on operation mode signals, merging what would otherwise require separate control systems. This reduces overall system complexity while maintaining specialized control functions through software-based mode switching.
Solution Approach 2:
The control device is designed with multi-functionality to handle both combining operations and traveling operations. It receives operation mode signals and selectively executes appropriate control routines, making a single device capable of performing multiple specialized functions that would traditionally require separate dedicated control systems.
2Ease of manufacture
If friction-based coupling devices are used for vehicle combination, then connection is simple, but control precision and responsiveness deteriorate
Solution Approach 1:
The patent introduces a coupling device with a pinion gear and rack mechanism as an intermediary between the friction-based connection and the drive shaft. This mechanical intermediary provides precise rotational coupling and power transmission while maintaining the simplicity of friction-based engagement. The pinion-rack mechanism converts linear movement into precise rotational movement, improving control precision without sacrificing connection simplicity.
3Device complexity
If friction wheels are used for driving, then device structure is simple, but power transmission efficiency and speed control precision deteriorate
Solution Approach 1:
The patent replaces direct friction wheel-to-shaft contact with a pinion gear and rack mechanism as an intermediary. This mechanical gear system provides positive engagement for power transmission, eliminating slip and improving efficiency. The pinion gear rotates on the drive shaft while engaging the rack on the friction wheel, creating a reliable mechanical connection that maintains simplicity while dramatically improving power transmission efficiency and speed control precision.
Data Source
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AI summary
[Problem] To facilitate work for eliminating an abnormality when an abnormality occurs in a combine during automatic mowing work. [Solution] This combine is provided with: a body part including a mowing part for mowing grain culms; a travel part for supporting the body part and traveling; a detection part for detecting an abnormality in the body part; and a control part which executes automatic mowing work for causing the mowing part to mow grain culms while causing the travel part to autonomously travel and carries out control such that, when the detection part detects an abnormality during the automatic mowing work, the automatic mowing work is interrupted and subsequently the travel part is made to travel backward by a first predetermined distance.