Adjustable Compression Rollers for High-Density Bales
Solution Overview
Problem
Conventional balers struggle to form high-density bales of low bulk density crop materials like miscanthus, switchgrass, small grain straws, and corn cobs, as increasing belt tension compromises durability and fails to achieve the desired density for efficient transportation and storage.
Innovation Solution
A baler equipped with an adjustable compression assembly featuring opposing rollers that generate pressure greater than 345 kPa, controlled by sensors and a controller to crush crop material effectively, ensuring uniform density and synchronized with other baler components for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If belt tension is increased to regulate bale density, then bale density is improved, but belt durability decreases
Solution Approach 1:
The compression function is segmented from the belt system and transferred to dedicated compression rollers. The rollers are arranged in multiple stages (first compression rollers, second compression rollers) that independently perform crushing and compression functions, separating the density regulation mechanism from the belt tension system and eliminating wear on belts while achieving high density.
Solution Approach 2:
Compression rollers serve as intermediary elements between the crop material and the bale chamber. These rollers apply controlled crushing force through adjustable gaps to compress the crop material before it enters the bale forming chamber, acting as a mediator that transfers compression function without involving the belts directly.
2Device complexity
If traditional baling methods are used on low bulk density crop materials, then equipment simplicity is maintained, but transportation efficiency deteriorates
Solution Approach 1:
The compression rollers perform preliminary crushing and compression of the crop material before it enters the bale forming chamber. This pre-compression action reduces the volume of low bulk density materials (miscanthus, switchgrass, small grain straws, corn cobs) in advance, enabling more material to be packed into each bale and improving transportation efficiency without requiring overly complex equipment.
Solution Approach 2:
The gap between compression rollers is made adjustable to change the compression parameters according to different crop material types. This allows the same equipment to handle various low bulk density materials (miscanthus, switchgrass, small grain straws, corn cobs) by adjusting the roller gap, achieving high density bales while maintaining equipment simplicity through a single adjustable mechanism.
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 enables the formation of high-density bales, improving transportation efficiency and reducing the number of bales needed, while maintaining equipment durability by locally crushing crop material before forming bales, thus enhancing logistics and handling capabilities.
Implementation Method 1
a compression assembly comprising at least one pair of opposing compression rollers configured to generate a pressure on crop material passed therethrough
Data Source
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AI summary
An improved baler and a method of using the improved baler to produce high density bales. The baler comprises a pick-up assembly (15,16,17,200) configured to pick-up crop material (60, 205); a compression assembly comprising at least one pair of opposing compression rollers (100a, 100b; 220a, 220b) configured to generate a pressure on the crop material (60,205) sufficient to crush the nodes as it passes between the compression rollers (100a, 100b; 220a, 220b); and a bale chamber (19,250), wherein the crushed crop forms a bale. The compression rollers (100a, 100b; 220a, 220b) define an adjustable gap therebetween. By adjusting the gap, a pressure sufficient to crush the nodes of the crop may be exerted on the crop material (60, 205) as it passes between the compression rollers (100a, 100b; 220a, 220b) may be controlled, resulting in bales of higher density than conventional bales.