U-Shaped Side Wall Stabilizes Belts in High-Pressure Roller Press Frame
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Solution Overview
Problem
High-pressure roller presses for comminuting regrind face significant wear issues with rollers, requiring frequent reconditioning or replacement, and existing machine frames with bridge structures are bulky and non-functional during operation.
Innovation Solution
A machine frame design that eliminates the need for a bridge frame by using a U-shaped side wall to stabilize belts, providing protection, mechanical stability, and supporting the grinding rollers, while reducing weight through lightweight sheet metal and additional frames for torsional rigidity, and welding sub-elements for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a bridge frame is used to stabilize belts after roller removal, then belt stability is improved, but device complexity and space occupation increase
Solution Approach 1:
The side wall is designed to perform multiple functions simultaneously: it serves as visual cladding, protects against grinding material escape, stabilizes the belts, and provides structural support. By combining these functions into a single integrated component, the patent eliminates the need for a separate bridge frame, reducing device complexity while maintaining belt stability.
Solution Approach 2:
The side wall is designed as a multi-functional element that combines protective, stabilizing, and support functions. It protects bearings from grinding material, stabilizes belts during operation and after roller removal, and provides structural support for the machine frame. This multi-functionality replaces the specialized bridge frame structure.
2Stability of the object's composition
If a bridge frame is used to stabilize belts, then belt stability is improved, but the machine frame occupies more space and becomes less functional
Solution Approach 1:
The side wall integrates the belt stabilization function into its overall structure, eliminating the need for a separate bridge frame that would occupy additional space. The side wall's design incorporates belt support features directly into its construction, reducing the total space required for the machine frame while maintaining belt stability.
3Strength
If thick sheet metal is used for the side wall to provide structural support, then strength is improved, but weight increases
Solution Approach 1:
The side wall is constructed from lightweight sheet metal combined with integrated frames that provide structural reinforcement. This composite construction approach allows the use of thinner, lighter materials while maintaining overall structural strength through the frame reinforcement, reducing the total weight of the machine frame.
Solution Approach 2:
The side wall uses locally reinforced construction where frames are integrated at specific locations to provide structural support. Instead of using uniformly thick heavy sheet metal throughout, the design applies reinforcement only where structurally necessary, reducing overall weight while maintaining required strength.
4Ease of manufacture
If screw or rivet holes are used to connect sub-elements, then ease of assembly is improved, but material thickness must be increased to avoid breaking points
Solution Approach 1:
The patent replaces mechanical connection methods (screws, rivets) with welding to join sub-elements of the machine frame. This substitution eliminates the need for holes that would weaken the structure, allowing the use of thinner materials while maintaining structural integrity, thereby reducing the overall weight of the machine frame.
Data Source
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Figure 3
AI summary
The invention relates to a machine frame (110) for a high-pressure roller press (100) which must be opened for disassembly. The invention states that opposing belts (150, 151) in the machine frame (110) are connected by a side wall (160). Because of the side wall, bridge supports for stabilising the machine frame during disassembly are not required.