Twine-Based Bale Length Control for Consistent Square Bales
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Solution Overview
Problem
Inconsistency in bale length, particularly with square balers for hay or straw, leads to handling difficulties, increased labor and maintenance costs, and reduced productivity due to longer bales that do not stack well, causing inefficiencies in baling, transportation, and storage.
Innovation Solution
A bale length variation control system using sensors to measure twine length and activate bale stop members to control bale length, integrating hydraulic actuators and electronic shut-off valves to stop bale movement when a threshold is reached, ensuring consistent bale dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bale length is increased to improve compression efficiency, then baling productivity is improved, but handling difficulty and breakage risk increase
Solution Approach 1:
The system dynamically adjusts bale length by continuously monitoring twine consumption and automatically activating bale stop members at optimal moments during the baling cycle, allowing the bale length to be adaptively controlled based on real-time conditions rather than fixed, resulting in consistently optimal bale dimensions that balance compression efficiency with handling ease
Solution Approach 2:
The system uses sensors to continuously measure twine length and provides feedback to the control system, which automatically activates bale stop members when the desired bale length is reached, creating a closed-loop control system that maintains consistent bale length while maximizing productivity
2Productivity
If bale length is increased to improve compression efficiency, then baling productivity is improved, but storage efficiency deteriorates
Solution Approach 1:
The system dynamically controls bale length by monitoring twine consumption in real-time and automatically stopping bale formation at the optimal moment, preventing excessive length that would reduce storage efficiency while maintaining sufficient length for compression efficiency, thereby optimizing the balance between these two competing requirements
Solution Approach 2:
The feedback mechanism continuously monitors twine length and automatically triggers bale stop members when the target length is reached, ensuring consistent bale dimensions that maximize both compression efficiency and storage efficiency without requiring manual intervention or post-baling adjustments
3Ease of operation
If bale length is made consistent to improve handling, then labor costs decrease, but device complexity increases
Solution Approach 1:
The system performs self-regulation by automatically monitoring its own bale formation process through twine length sensors and self-activating bale stop members when the desired length is reached, eliminating the need for external manual control or complex operator intervention, thereby achieving consistent bale length with relatively simple automation
Solution Approach 2:
The system replaces manual mechanical control of bale length with automated sensor-based detection and electronic control activation, substituting complex manual measurement and adjustment operations with automatic electronic sensing and actuation mechanisms that achieve more consistent results
4Ease of operation
If bale length is reduced to improve handling, then labor costs decrease, but compression efficiency deteriorates
Solution Approach 1:
The system dynamically determines optimal bale length by monitoring twine consumption throughout the baling process and automatically stopping at the moment that achieves sufficient compression density while preventing excessive length, allowing the bale to be as long as needed for compression efficiency but no longer, thereby optimizing the balance between compression quality and handling ease
Data Source
AI summary
Method, apparatus, and systems for controlling bale length of a bale in an agricultural baling machine are provided. The method may include monitoring length of twine for the bale using a sensor, determining if the length of twine reaches a threshold for the bale using a control module operatively connected to the sensor. After reaching the threshold, the method may include activating an actuator on the agricultural baling machine by the control module and tying the twine for the bale to secure the bale wherein the tying the twine is performed using a knotter of the agricultural baling machine activated with the actuator. The method may further include activating one or more bale stop members protruding into a bale chamber of the machine such that the one or more bale stop members stop movement of crop material to control the bale length when the length of twine reaches the threshold.