Bale Wrapping Switching Unit Dynamics
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Solution Overview
Problem
Existing bale wrapping devices face issues with false triggering of the safety measure during moving operations, leading to unwanted interruptions in the wrapping process due to the recommended trigger energy of 20 joules being insufficient for stationary operation.
Innovation Solution
A bale wrapping device with a switching unit that can be deflected from a home position to a triggering position by overcoming a restraining effect, utilizing an electromagnet to influence the retaining effect and adjust it based on the movement state of the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switching unit is designed with a low trigger energy of 20 joules to ensure safety during stationary operation, then safety is improved, but false triggering occurs during moving operations leading to unwanted interruptions
Solution Approach 1:
The holding device is designed to dynamically adjust the restraining effect based on the movement state of the bale wrapping device. During stationary operation, the restraining effect is reduced to allow sensitive triggering with low energy (20 joules) for safety. During moving operation, the restraining effect is increased to prevent false triggering from vibrations and movements, thus maintaining wrapping process continuity while ensuring safety when stationary.
2Productivity
If the switching unit is held firmly in the home position to prevent false triggering during movement, then productivity is improved, but the trigger energy required increases reducing safety sensitivity
Solution Approach 1:
The holding device dynamically adjusts the restraining effect based on the movement state. During stationary operation, the restraining effect is reduced to allow sensitive triggering with low energy (20 joules) for safety. During moving operation, the restraining effect is increased to prevent false triggering from vibrations and movements, thus maintaining wrapping process continuity while ensuring safety when stationary.
Solution Approach 2:
The system changes the parameter of restraining effect strength based on the movement state. When the bale wrapping device is stationary, the restraining effect parameter is set to a lower value to allow sensitive triggering. When the device is moving, the restraining effect parameter is increased to prevent false triggering, thus adapting the triggering sensitivity to the operational context.
3Reliability
If the switching unit is designed to be highly sensitive to obstacles, then safety is improved, but false triggering from vibrations during movement increases
Solution Approach 1:
The holding device dynamically adjusts the restraining effect based on the movement state. During stationary operation, the restraining effect is reduced to allow sensitive triggering with low energy (20 joules) for safety. During moving operation, the restraining effect is increased to prevent false triggering from vibrations and movements, thus maintaining wrapping process continuity while ensuring safety when stationary.
Solution Approach 2:
The system changes the parameter of restraining effect strength based on the movement state. When the bale wrapping device is stationary, the restraining effect parameter is set to a lower value to allow sensitive triggering. When the device is moving, the restraining effect parameter is increased to prevent false triggering, thus adapting the triggering sensitivity to the operational context.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the reliability and safety of the bale wrapping device by reducing false triggering during moving operations while maintaining sensitive triggering in stationary states, ensuring efficient wrapping processes.
Implementation Method 1
The holding device has at least one electromagnet which is designed to at least influence the retaining effect
Data Source
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AI summary
The present invention relates to a bale wrapping device (1) for wrapping a crop bale (2) with a wrapping material (41), said device comprising a frame (11), at least one wrapping unit (4) which is rotatable about a wrapping axis (W) in a direction of rotation relative to the frame for delivering the wrapping material, and at least one switching unit (5) which precedes the wrapping unit in the direction of rotation and is provided for detecting an obstacle, and a holding device (6) which is designed to hold the switching unit in a basic position, wherein the switching unit can be deflected from the basic position into a triggering position by overcoming a retaining effect of the holding device relative to the wrapping unit, whereby a safety measure of the bale wrapping device can be triggered.In order to offer increased reliability and safety when wrapping crop bales, the invention provides that the retention effect can be influenced by using an electromagnet (61), and/or the bale wrapping device has an adjusting device which automatically adjusts the retention effect depending on a movement state of the frame relative to a ground.