Bulk Material Shredder With Openable Access for Screen Maintenance
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Solution Overview
Problem
Existing shredders face challenges in providing easy access for maintenance while maintaining structural integrity and efficiency, due to the harsh operating conditions and the need for periodic cleaning and maintenance of components like the rotor and screen.
Innovation Solution
A shredder design with a fully openable side and top access door, allowing easy installation and removal of the screen, combined with a movable shredder comb for overload relief and an auto-reverse function, along with a drive train and hydraulic pressure relief system for enhanced maintenance and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the shredder is designed with heavy robust components for high loads, then the structural integrity and equipment life are improved, but the ease of maintenance and accessibility to components deteriorates
Solution Approach 1:
The shredder is divided into modular sections with removable panels and doors that provide access to internal components. The screen, comb, and rotor can be accessed by opening specific panels without disassembling the entire machine, maintaining structural integrity while enabling maintenance.
Solution Approach 2:
The screen and comb are designed as extractable components that can be removed from the shredder chamber for cleaning and maintenance. This allows easy access to wear-prone parts without compromising the robust structure of the main housing.
2Stability of the object's composition
If the screen is fixed in position for structural stability, then the structural integrity is improved, but the ease of maintenance and screen replacement deteriorates
Solution Approach 1:
The screen is designed with a dynamic mounting system that allows it to be easily inserted and removed from the shredder chamber. The screen can be quickly replaced by opening access panels and sliding the screen in or out, maintaining structural stability during operation while enabling easy maintenance.
3Manufacturing precision
If the comb is fixed in position for consistent shredding performance, then the manufacturing precision is improved, but the adaptability to overload conditions deteriorates
Solution Approach 1:
The comb is mounted on adjustable supports that allow it to be positioned at precise intervals from the rotor under normal conditions. When overload occurs, the comb can be hydraulically or mechanically adjusted to change its position, providing adaptability to overload conditions while maintaining manufacturing precision during normal operation.
Solution Approach 2:
The distance between the comb and rotor can be dynamically adjusted based on operating conditions. During normal operation, the comb maintains a consistent position for precise shredding. During overload, the comb position parameter is changed to increase clearance, allowing the system to adapt to varying load conditions.
4Strength
If the access door is limited in opening range for structural reasons, then the structural integrity is improved, but the ease of maintenance deteriorates
Solution Approach 1:
Instead of a single large access door, the shredder has multiple segmented panels and doors that can be opened independently. This allows maintenance personnel to access specific components through smaller openings that maintain structural integrity while providing sufficient access for maintenance activities.
Solution Approach 2:
Access doors are designed to open in multiple directions or along multiple axes rather than being limited to a single plane. This provides enhanced accessibility to internal components while the door structure itself maintains structural strength through its design.
Data Source
AI summary
A shredder includes a shredder box having a first end wall, a second end wall, and opposite side walls extending between the first and second end walls. A lower discharge opening discharges shredded material from the shredder box. A shredder rotor is positioned within an interior of the shredder box, the shredder rotor being rotatable about a rotor axis and including a main rotor body and plurality of rotor teeth mounted to the main rotor body. A shredder comb is positioned adjacent to the shredder rotor and includes comb teeth that intermesh with the rotor teeth. An upper hopper is located above the shredder box for receiving material to be shredded. The upper hopper includes an upper hopper end wall formed with a concavity to facilitate feeding of material to be shredded into the shredder box and to the shredder rotor.