Twin-Roll Machine Hydraulic Force Absorption
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Solution Overview
Problem
Existing roll presses for comminuting materials require a heavy and expensive machine frame to absorb radial roller pressing forces, making them cumbersome and costly, and necessitate laborious dismantling for roller replacement and maintenance.
Innovation Solution
The twin-roller machine design eliminates the need for a heavy machine frame by arranging hydraulic cylinders to directly act on the bearing housings of both rollers, forming a self-contained system of forces that absorbs radial milling forces, allowing for a lightweight and easily accessible frame structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a heavy machine frame is used to absorb radial roller pressing forces, then the structural stability and force absorption capability are improved, but the machine weight and construction complexity increase, and roller replacement becomes difficult
Solution Approach 1:
The machine frame is segmented into a lightweight base structure with machine consoles, while the force absorption function is transferred to the hydraulic cylinders and bearing housings that form a self-contained force system. This segmentation eliminates the need for a heavy enclosing frame while maintaining structural stability.
Solution Approach 2:
The hydraulic cylinders and bearing housings form a self-contained force system that absorbs radial milling forces internally. The bearing housings themselves serve as the force absorption mechanism, eliminating the need for a separate heavy machine frame structure.
2Strength
If a heavy machine frame is used to support hydraulic cylinders, then the force absorption is improved, but the ease of roller removal and installation deteriorates
Solution Approach 1:
The machine is divided into modular components where the roller assembly with bearing housings can be independently removed from the lightweight machine console. This modular segmentation allows easy roller replacement without dismantling a heavy enclosing frame.
Solution Approach 2:
The heavy machine frame enclosing structure is completely removed from the design. Only the essential lightweight machine consoles with slideways remain, allowing direct access to rollers for easy removal and installation while the bearing housings continue to absorb forces internally.
3Stability of the object's composition
If a self-contained machine frame system is used, then the structural stability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The hydraulic cylinders and bearing housings form a self-contained force system that provides structural stability internally. The bearing housings themselves serve as the force absorption mechanism, eliminating the need for a separate heavy machine frame structure.
Solution Approach 2:
Hydraulic cylinders are used to apply roller pressing forces and form a self-contained system of forces. The hydraulic system integrates with the bearing housings to create a unified force absorption mechanism that replaces the traditional machine frame.
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 simplifies the construction and maintenance of the roll press, enabling quick roller replacement and uniform wear distribution, while eliminating the need for a heavy machine frame, thus reducing operational complexity and costs.
Implementation Method 1
hydraulic cylinders being used for pressing one roller against the opposite roller
Implementation Method 2
material which is drawn into the roller nip by friction
Implementation Method 3
the hydraulic cylinders are arranged transversely with respect to the roller nip between the respectively mutually opposite bearing housings of the rollers, to be precise as pulling cylinders which pull the opposite bearing housings and therefore the two milling rollers together
Data Source
AI summary
In the design of a twin-roller machine, such as a roll press for comminuting a bed of granular material, with two rotatably mounted, counter rotationally driven rollers which are separated from each other by a roller nip, and which use hydraulic cylinders to provide a roller pressing force the hydraulic cylinders are arranged in such a manner that they act in each case both on the bearing housings of one roller and on the respectively opposite bearing housings of the other roller with a self-contained system of milling pressing forces being formed without a closed machine frame loaded by the roller pressing forces.