Pivoting Scraper Bar for Round Baler Adhesion Control
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Solution Overview
Problem
Existing scraper devices for round balers do not function optimally, especially in difficult harvesting conditions such as wet crops, leading to adhesion and blockages that cause malfunctions.
Innovation Solution
A scraper device with a scraper bar carrier that can pivotally connect to the baler, cyclically lifting the scraper bar to prevent material accumulation and blockages, synchronized with the tensioning mechanism of the pressing means, ensuring effective removal of deposits and maintaining tension during bale formation and ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the scraper bar continuously contacts the pressing element, then adhesion removal is effective, but material accumulates on the scraper bar causing blockages under wet conditions
Solution Approach 1:
The scraper bar cyclically moves between a scraping position (contacting the pressing element to remove adhesion) and a raised position (allowing material to fall off). This periodic action prevents material accumulation while maintaining effective scraping during the contact phase, resolving the contradiction between adhesion removal and blockage prevention.
Solution Approach 2:
The scraper bar is designed to be movable rather than fixed, transitioning dynamically between contact and non-contact states with the pressing element. This dynamic positioning allows the system to adapt between scraping mode and cleaning mode, preventing material buildup while maintaining scraping effectiveness.
2Device complexity
If a fixed scraper bar is used, then structure is simple, but material accumulates on the scraper bar and pressing element causing malfunctions
Solution Approach 1:
The scraper bar is designed to be movable rather than fixed, transitioning dynamically between contact and non-contact states with the pressing element. This dynamic positioning allows the system to adapt between scraping mode and cleaning mode, preventing material buildup while maintaining scraping effectiveness.
3Reliability
If the scraper bar is continuously pressed against the pressing element, then adhesion is effectively removed, but tension on the pressing element varies during operation
Solution Approach 1:
The scraper bar cyclically moves between a scraping position (contacting the pressing element to remove adhesion) and a raised position (allowing material to fall off). This periodic action prevents material accumulation while maintaining effective scraping during the contact phase, resolving the contradiction between adhesion removal and blockage prevention.
Data Source
Figure 1
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Figure 2b
AI summary
A scraper device (84) for reducing adhesion to a movable component of a press (10) is proposed, preferably designed in the manner of an agricultural round baler, in particular a pressing element (34) interacting with a bale, and especially a scraper bar carrier (86) carrying a scraper bar (88), wherein the scraper bar carrier (86) is movably, and in particular pivotably, connected to the press, and can assume at least a first position in which the scraper bar (88) effectively abuts the pressing element (34), and a second position in which the scraper bar (88) is lifted from the pressing element (34), wherein the scraper bar (88) cyclically assumes the second, lifted position. Furthermore, a press (10) with such a scraper device (84) and a method for operating a press (10) are proposed.