Floating Base-Cutter Assembly for Sugar-Cane Harvesters
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Solution Overview
Problem
The existing base-cutter assemblies on sugar-cane harvesters are insufficient in reacting rapidly to ground unevenness, leading to inefficient cane cutting close to the ground, resulting in soil penetration and mechanical wear, as well as damage to the root system and harvester machinery.
Innovation Solution
A floating base-cutter assembly with articulated rods and an inverted-shell shaped component for ground surface reading, coupled with a hydraulic/pneumatic cylinder and traction spring, allows the cutting knives to adjust their distance from the ground, ensuring rapid reaction to ground irregularities and minimizing soil contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the base-cutter assembly is made heavy and rigid to hold and drive the cutting mechanism, then the structural strength and stability are improved, but the ability to rapidly follow ground relief alterations deteriorates
Solution Approach 1:
The base-cutter assembly is separated from the main harvester frame into an independent floating unit connected by articulated rods. This segmentation allows the cutting assembly to move independently to follow ground contours while the main frame remains stable and heavy for structural strength.
Solution Approach 2:
The base-cutter assembly is made dynamically movable through articulated rods and hydraulic cylinders, transitioning from a static rigid connection to a dynamic floating connection. This enables rapid adaptation to ground unevenness while maintaining structural integrity through controlled movement.
2Stability of the object's composition
If the base-cutter assembly is made heavy to provide stable cutting, then the cutting stability is improved, but the reaction time to ground oscillations deteriorates
Solution Approach 1:
Separating the cutting assembly from the main frame allows the heavy frame to provide stable platform while the lighter, more agile cutting assembly responds quickly to ground changes, eliminating the time delay inherent in moving the entire heavy assembly.
Solution Approach 2:
The reading means detect ground surface variations and provide feedback signals that trigger immediate hydraulic cylinder activation, creating a rapid feedback loop that adjusts cutting knife position in real-time without the time delay of manual or mechanical adjustment systems.
3Manufacturing precision
If the cutting knives are positioned close to the ground for ideal cutting height, then the cutting precision is improved, but the risk of soil penetration and mechanical wear increases
Solution Approach 1:
The cutting assembly dynamically adjusts its position relative to the ground through articulated rods and hydraulic cylinders, maintaining optimal cutting height while automatically lifting to avoid soil penetration when ground unevenness is detected, thereby reducing mechanical wear.
Solution Approach 2:
Reading means continuously monitor ground surface position and provide feedback control signals to the hydraulic system, enabling real-time adjustment of cutting knife height to maintain precise cutting while preventing harmful soil contact and subsequent wear.
Data Source
AI summary
Provided is a floating base-cutter assembly (16) for use on sugar-cane harvesters, the assembly being formed by two base-cutters. Each of the base-cutters (16) comprises a set of cutting knives (9). The base-cutter assembly (16) comprises an adjustable set of cutting knives (9) that may be selectively adjustable with respect to the ground. The base-cutter assembly (16) is also mounted on the harvester body via a set of articulated rods (2, 5). The base-cutter assembly (16) also includes an electric switch (7) and an inverted-shell-shaped component (8) that collectively control a hydraulic or pneumatic cylinder (4) to articulate the rods (2,5) and maintain the set of cutting knives (9) at a redetermined distance relative to the ground surface, regardless of variations in the ground surface.