Variable Diameter Auger for Grain Cart Throughput
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Solution Overview
Problem
Existing augers face a trade-off between increasing throughput and minimizing weight, as larger diameters lead to increased weight, straining tractor draw bars, reducing grain cart capacity, and causing imbalance.
Innovation Solution
A high-throughput auger design featuring a receiving end with a larger diameter screw and housing, coupled with a main auger portion having a higher pitch and smaller diameter screw, allowing for efficient material transfer while minimizing weight increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the auger diameter is increased to accommodate greater volume of grain, then throughput is improved, but weight increases
Solution Approach 1:
The auger is divided into multiple sections with different diameters along its length. The diameter varies from the intake end to the discharge end, with each section optimized for its specific function. This segmentation allows the auger to achieve high throughput capacity while minimizing overall weight by not requiring a uniformly large diameter throughout.
Solution Approach 2:
Different sections of the auger have different local properties - specifically different diameters and pitches - optimized for their specific functions. The intake end has larger diameter for receiving grain, while the discharge end has smaller diameter for controlled delivery. This local quality variation resolves the contradiction between throughput and weight.
2Productivity
If the auger diameter is increased to increase throughput, then grain volume capacity is improved, but grain cart capacity is reduced
Solution Approach 1:
The variable diameter design segments the auger into functional zones that efficiently transfer grain without requiring excessive horizontal space. The tapered configuration allows grain to be moved quickly through a compact footprint, preserving grain cart storage capacity while maintaining high transfer rates.
3Productivity
If the auger diameter is increased to improve throughput, then material handling capacity is improved, but balance is degraded
Solution Approach 1:
The non-uniform diameter distribution creates a balanced mass distribution along the auger length. By concentrating larger diameter sections near the intake and using progressively smaller sections toward the discharge, the design achieves high throughput capacity while maintaining proper balance and minimizing impact on grain cart stability.
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 design achieves high throughput with reduced weight, minimizing strain on tractor draw bars and maintaining grain cart balance, thus optimizing material transfer efficiency.
Implementation Method 1
An auger assembly can be attached to a grain cart to off-load, or to load the grain cart
Implementation Method 2
A typical grain auger includes an auger screw of constant diameter and pitch that is housed inside a tubular housing or shaft to form an auger assembly
Implementation Method 3
A grain cart according to an embodiment of the present invention includes a hopper with a gravity fed sump for unloading material stored in the storage container
Data Source
AI summary
A high-throughput auger includes a receiving end auger portion that has a first shaft. The receiving end auger portion also includes a first screw having a first pitch and a first diameter, and a first housing portion of a second diameter. The auger also includes a main auger portion coupled to a discharge end of the receiving end auger portion. The main auger portion includes a second shaft, a second screw having a second pitch and a third diameter, and a second housing of a fourth diameter. The first diameter is greater than the third diameter and the second pitch is greater than the first pitch.