Crusher Fixed Blade Segmentation for Maintainability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing crushers face issues with maintaining and replacing fixed blades, which are difficult to handle due to their attachment to the inner surface, leading to damage and inefficient crushing of sheet-shaped objects like paper, and require frequent maintenance.
Innovation Solution
The crusher design includes a curved holding plate with plate fitting grooves for easy attachment and removal of fixed blades, along with guide bodies to ensure objects are lifted and contacted by hammer members, and a shifting mechanism for optimal loading direction based on object type, allowing for interchangeable hammer members for various crushing tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed blades are attached to the inner surface of the crushing chamber, then crushing function is maintained, but maintenance and replacement become difficult
Solution Approach 1:
The fixed blades are segmented from the crushing chamber wall by introducing a curved holding plate as an intermediate carrier. The blades are attached to the holding plate rather than directly to the chamber wall, allowing the entire plate assembly to be removed and replaced as a unit, thus maintaining crushing function while improving maintainability.
Solution Approach 2:
A curved holding plate serves as an intermediary component between the fixed blades and the crushing chamber wall. This mediator allows for easy attachment and removal of the blade assembly through the opening, solving the contradiction between maintaining reliable crushing function and enabling easy maintenance.
2Ease of operation
If sheet-shaped objects are loaded through the opening, then loading is simple, but objects may attach to inner surface and not be crushed
Solution Approach 1:
Guide bodies are positioned in advance within the crushing chamber to perform preliminary guiding and lifting actions on sheet-shaped objects before they reach the hammer members. This preliminary action prevents attachment to the inner surface and ensures the objects are properly positioned for effective crushing.
Solution Approach 2:
Guide bodies act as intermediary elements between the loaded sheet-shaped objects and the hammer members. These guide bodies lift and redirect the objects, preventing direct contact with the crushing chamber inner surface and ensuring proper engagement with the crushing mechanism.
3Productivity
If hammer members and fixed blades are used for long period, then crushing capacity is maintained, but damage occurs requiring maintenance
Solution Approach 1:
The fixed blades are segmented onto a separate curved holding plate that can be independently removed from the crushing chamber. This segmentation allows the blade assembly to be easily replaced when damaged, maintaining high crushing capacity while improving component durability through timely replacement.
Solution Approach 2:
The curved holding plate with fixed blades can be easily removed and replaced when damage occurs, implementing a discard-and-recover strategy. This allows rapid replacement of worn components without replacing the entire crushing chamber assembly, maintaining productivity while managing component durability.
4Adaptability or versatility
If a single crusher handles various objects, then versatility is improved, but crushing precision may be compromised
Solution Approach 1:
The crusher incorporates adjustable parameters including variable opening sizes, interchangeable hammer members, and adjustable guide bodies that can be configured based on the specific material being processed. This dynamic adjustability allows a single crusher to maintain high crushing precision across various object types while preserving versatility.
Solution Approach 2:
The system utilizes parameter changes such as adjusting the opening dimensions, changing hammer member configurations, and modifying guide body positions to optimize crushing performance for different materials. These parameter adjustments enable a single crusher to handle diverse objects while maintaining precision through tailored configuration.
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 enhances maintainability, ensures stable crushing of diverse materials, improves recyclability, and reduces equipment and running costs by allowing a single crusher to handle a wide range of objects from hard to soft, while maintaining high crushing precision and protecting personal information.
Implementation Method 1
The hammer members 9 are arranged on a circular rotating plate 8 at a predetermined pitch along a circumferential direction. The fixed blades 10 are fixed onto the inner surface of the crushing chamber 6. The hammer members 9 and the fixed blades 10 crush the object to be crushed when the hammer members 9 rotate.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A crusher is provided that can stably crush various information media, such as paper, magnetic recording media including cassette tapes and the like, optical recording media, and substrates, and the like, and has excellent maintainability. Hammer members 29 that extend from a rotation shaft 45 in a radial direction and rotate with a rotation of the rotation shaft 45 are housed in a casing 21 that includes an upper loading opening 22 for loading an object to be crushed and a lower discharge opening 23 for discharging a crushed object. Fixed blades 47 are arranged within the casing 21 on an outer diameter side of the hammer members. The hammer members 29 and the fixed blades 47 crush the object to be crushed when the hammer members 29 are rotated. A guide path 20 that that guides the object to be crushed that is loaded from the upper loading opening 22 into a crushing chamber 26 in which the object to be crushed is crushed by the hammer members 29 and the fixed blades 47 is provided within the casing 21. Guide bodies 75 that lift the object to be crushed towards the crushing chamber 26 side are provided on a downstream side of the guide path 20.