Helical Gear Scraper Adjustment for Baling Press Wear
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Solution Overview
Problem
Existing balers face issues with the scraper mechanism settling or wearing out, leading to inconsistent adhesion removal from conveyor elements, which can cause binding materials to stick to rollers instead of bales, potentially damaging the baler.
Innovation Solution
A scraper device with a screw gear adjustment mechanism that allows precise positioning and repositioning of the scraper relative to the scraper carrier, ensuring optimal distance and alignment with the conveyor element, using a combination of rotating and displacing elements to maintain effective adhesion removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the scraper is connected to the scraper support by screws and threaded pins, then the scraper can be adjusted to the correct position, but the scraper may settle and move out of position during operation due to wear and contamination
Solution Approach 1:
The scraper device is designed to automatically compensate for wear and maintain optimal positioning without requiring manual intervention. The spring element continuously applies force to maintain contact between the scraper and the conveyor element, automatically adjusting for wear accumulation over time.
Solution Approach 2:
The scraper positioning system transitions from a static fixed position to a dynamic adjustable position. The spring element allows the scraper to move dynamically within a range, maintaining optimal contact pressure and position despite wear, contamination, or operational variations.
2Productivity
If the scraper is positioned too close to the conveyor element, then adhesion removal is effective, but the scraper experiences increased wear and may cause damage
Solution Approach 1:
The spring element enables the scraper to dynamically adjust its position relative to the conveyor element. The spring force maintains optimal contact pressure for effective adhesion removal while allowing the scraper to retreat slightly when wear occurs or when excessive force is encountered, preventing damage.
Solution Approach 2:
The spring element acts as a cushioning mechanism that absorbs shocks and reduces impact forces between the scraper and the conveyor element. This preemptive cushioning prevents damage before it occurs by distributing forces over time rather than allowing direct hard impacts.
3Device complexity
If the scraper position is fixed, then the structure is simple, but the scraper cannot compensate for wear and contamination over time
Solution Approach 1:
The scraper system transitions from a fixed static position to a dynamic adjustable position enabled by the spring element. This dynamic capability allows the scraper to automatically compensate for wear and contamination over time, maintaining reliable performance without complex adjustment mechanisms.
Solution Approach 2:
The spring-loaded mechanism enables the scraper to self-adjust and self-compensate for wear and contamination automatically during operation, eliminating the need for complex manual adjustment systems while maintaining long-term performance consistency.
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 ensures reliable and precise adjustment of the scraper position, preventing binding materials from sticking to rollers and ensuring proper bale wrapping, reducing wear and maintenance needs, and maintaining optimal performance over time.
Implementation Method 1
a second adjusting element which forms a helical gear with the first adjusting element and is displaceable relative to the stripper carrier in the adjustment direction
Implementation Method 2
a surface of the conveyor element adjacent to the stripper is movable past the latter in order to strip adhering material from the surface
Data Source
Figure 1
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AI summary
The present invention relates to a harvesting machine (1) for agricultural crops, comprising a movable conveying element (8 - 10) and a stripping device (20) with a stripper carrier (21) and a stripper (30), wherein a surface (8.1) of the conveying element (8 - 10) adjacent to the stripper (30) is movable past it in order to strip adhering material from the surface (8.1), and wherein a position of the stripper (30) relative to the stripper carrier (21) is adjustable.To provide reliable means for adjusting the position of a scraper of a harvesting machine, the invention provides that the scraper (30) is connected to the scraper carrier (21) by at least one adjustment arrangement (40), which has a first adjusting element (41) rotatable relative to the scraper carrier (21) in an adjustment direction (V), and a second adjusting element (46) forming a helical gear with the first adjusting element (41) and displaceable relative to the scraper carrier (21) in the adjustment direction (V), which is configured to transmit force to the scraper (30). The invention further relates to a scraper device (20) for a harvesting machine (1) for agricultural crops.