Elastic Spiral Shaft Mounting for High-Load Soil Classification
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Solution Overview
Problem
Classifying apparatuses with spiral shafts mounted at one end are prone to heavy damage under high loadings, such as those encountered in quarries, due to the impulse created when material impacts the shafts and spreading forces between them.
Innovation Solution
The core tube is mounted elastically relative to the bearing journal using an elastic bearing means, allowing the spiral shafts to yield sideways and absorb the impact, thereby reducing damage and increasing the apparatus's loading capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spiral shafts are mounted at one end (cantilever configuration), then the apparatus can handle material loading, but heavy damage occurs due to impulse forces and spreading forces between shafts
Solution Approach 1:
The patent makes the previously fixed bearing journal position dynamic by introducing elastic bearing means (springs) that allow the bearing journal to move elastically in the direction of the shaft axis. This dynamic adjustment enables the shafts to yield under load, reducing impulse forces and spreading forces, thereby preventing damage while maintaining material loading capability.
2Stability of the object's composition
If spiral shafts are rigidly mounted, then structural stability is maintained, but the apparatus cannot withstand high loadings without damage
Solution Approach 1:
The patent changes the mechanical parameter of the bearing journal from rigid (fixed position) to elastic (movable within spring limits). This parameter change allows the system to absorb high loadings through elastic deformation while maintaining overall structural stability, effectively increasing the apparatus's strength and loading capacity.
3Strength
If elastic bearing means are introduced to reduce shaft damage, then loading capacity increases by 80%, but device complexity increases
Solution Approach 1:
The patent introduces elastic bearing means (springs) as an intermediary element between the bearing journal and the supporting structure. This intermediary component absorbs the complexity of handling high loadings and impulse forces, allowing the rest of the apparatus to remain relatively simple while achieving an 80% increase in loading capacity.
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
This design enables the apparatus to withstand up to 80% higher loadings, extending its operating time and service life, and reducing maintenance and repair costs, while effectively classifying both sticky and solid materials, including larger rocks.
Implementation Method 1
the core tube (5) is mounted elastically relative to the bearing journal (6) by means of at least one elastic bearing means (7)
Data Source
AI summary
A device configured to classify material to be classified, preferably into two fractions, preferably of soil, such as sticky, clayey soil, especially intended for use in a quarry, having a machine frame and having at least two spiral shafts rotatably mounted on the machine frame. At least one spiral shaft includes a core tube having at least one outer screw helix and at least one bearing journal. The core tube is mounted elastically relative to the bearing journal by at least one elastic bearing.