Multi-disc Hub Segmentation for Single-Worker Shaft Attachment
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Solution Overview
Problem
Current disc screen systems require multiple workers to replace discs, are inefficient, and pose safety risks due to the need for complex mounting arrangements and disconnection of drives, making single-worker maintenance impractical.
Innovation Solution
A multi-disc assembly with a hub comprising elastomeric material, featuring a through bore that can be temporarily secured to the shaft using a clip, pin, or magnet, allowing for single-worker installation and replacement by overcoming the force of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If complex mounting arrangements and drive disconnection are used to replace discs, then disc replacement can be accomplished, but multiple workers are required and safety risks increase
Solution Approach 1:
The hub is divided into two separable halves that can be independently manipulated. This segmentation allows one worker to safely hold the hub steady while another installs the disc, eliminating the need for complex mounting arrangements and drive disconnection while reducing safety risks associated with multiple workers coordinating complex tasks
Solution Approach 2:
The hub design incorporates dynamic elements including a movable clamp mechanism that can be opened and closed to secure the hub to the shaft. This dynamic feature allows for quick attachment and detachment without requiring drive disconnection or complex mounting procedures, enabling safe single-worker operation
2Ease of repair
If traditional disc removal methods are used, then discs can be replaced, but significant time is required for disassembly and reassembly
Solution Approach 1:
The hub is pre-configured with a through-bore and clamp mechanism that is ready for quick attachment to the shaft. The separable half-hub design allows preliminary positioning and securing without time-consuming disassembly of complex mounting arrangements, significantly reducing maintenance time while maintaining ease of repair
Solution Approach 2:
The separable hub halves can be independently handled and pre-positioned, allowing for rapid assembly and disassembly. This segmentation eliminates the need for time-consuming complete disassembly of traditional mounting arrangements, enabling quick disc replacement with minimal downtime
3Reliability
If multiple workers are required for disc replacement, then safety can be maintained, but operational efficiency decreases
Solution Approach 1:
The separable hub design allows one worker to safely hold the hub steady while another installs the disc, maintaining safety through clear role division. This segmentation enables efficient single-worker operation for simple tasks while preserving the option for two-worker collaboration for complex installations, thereby maintaining safety without sacrificing productivity
Solution Approach 2:
The hub's self-retaining clamp mechanism and through-bore design allow it to be securely attached and held in position with minimal worker intervention. This self-service feature maintains worker safety by reducing the need for complex manual handling and coordination, while simultaneously improving productivity by enabling quick single-worker replacement operations
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
Enables efficient and safe single-worker maintenance of disc screens, reducing operational costs and improving worker safety by allowing discs to be replaced quickly and easily without the need for multiple workers or complex disassembly.
Implementation Method 1
the fastener is a magnet, and the magnet creates a gripping force between the hub part and the shaft
Data Source
AI summary
An improved multi-disc assembly and method for releasable attachment to a shaft of a disc screen apparatus. A multi-disc hub includes multiple discs configured for use in a material separation screen of a disc screen apparatus, and has a through bore configured for direct engagement over the shaft of a material separation screen. The multi-disc hub is comprised of at least two parts that detach from each other, and at least one part comprises a portion of the through bore cross-sectional area that is less than or equal to half of the total through-bore cross-sectional area. A fastener is adapted to attach at least one hub part to the shaft, and the fastener provides a force that is greater than the force of gravity to temporarily retain the hub part onto the shaft when the shaft is rotated.