Reversible Shredder Comb Teeth for Faster Wear-Part Replacement
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Solution Overview
Problem
Existing low-speed shredders experience wear and tear on comb teeth due to harsh operating conditions, necessitating frequent replacement and maintenance.
Innovation Solution
A shredder design with individually replaceable and reversible comb teeth, supported by a comb unit frame, allows for easy access and efficient replacement, and includes hydraulic cylinders for positioning the comb unit between shredding and relief positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If comb teeth are made individually replaceable, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The comb teeth are divided into individual replaceable units that can be separately removed and replaced. Each comb tooth is mounted independently on the comb unit frame, allowing selective replacement of worn teeth without replacing the entire comb assembly. This segmentation enables easy repair while maintaining manageable structural complexity through standardized mounting interfaces.
2Ease of repair
If comb teeth are made reversible, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The comb teeth are designed with reversible mounting that allows them to be rotated 180 degrees and reused. The mounting structure includes features that accommodate both orientations, enabling the teeth to be flipped and continued used after initial wear. This dynamic reusability extends component lifespan without requiring complex replacement mechanisms.
3Ease of operation
If access door is added for easy access to comb, then ease of operation is improved, but device complexity increases
Solution Approach 1:
An access door is extracted and added to the shredder housing to provide direct access to the comb unit and comb teeth. This door can be opened to allow maintenance personnel to reach the comb teeth for replacement or adjustment without disassembling the entire shredder. The access door is a simple structural addition that significantly improves operational ease and maintenance accessibility.
4Reliability
If frequent replacement of comb teeth is required, then reliability is maintained, but loss of time increases
Solution Approach 1:
The comb teeth are designed with pre-configured mounting structures that allow for rapid replacement. The mounting features are prepared in advance with standardized interfaces and alignment features, enabling quick installation of replacement teeth without complex assembly procedures. This preliminary preparation of the mounting system minimizes downtime during replacement operations.
Data Source
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AI summary
A shredder includes a shredder box and a shredder rotor positioned within an interior of the shredder box. The shredder rotor is rotatable about a rotor axis and has a plurality of rotor teeth. An access door is pivotally moveable between an open position and a closed position, the access door defining a side wall of the shredder box when in the closed position. A shredder comb is positioned at an interior side of the access door and includes a plurality of shredder comb teeth. When the access door is in the closed position, the shredder comb is positioned at a shredding location to intermesh with the plurality of rotor teeth for shredding material input to the shredder box. The plurality of shredder comb teeth are removable and reversible for use in two orientations.