Sand rake with inclined filter body and teeth for shellfish collection
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Solution Overview
Problem
Current methods for collecting shellfish and similar organisms on the beach are inefficient, physically demanding, and pose a risk of injury due to sharp shells, with no ideal tool available to address these issues.
Innovation Solution
A sand rake with a filter body featuring a sloped front side and serrated teeth, combined with a support component and a detachable handle, designed to enhance strength, efficiency, and safety in collecting shellfish and similar organisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hands are used directly to collect shellfish, then collection can be performed without tools, but hands are easily cut by sharp shells and harvest yield is low
Solution Approach 1:
The sand rake serves as an intermediary tool between the user and the shellfish. The filter body with its mesh structure allows users to scoop up shellfish from the sand without direct hand contact, while the teeth on the front edge help penetrate and lift the shellfish efficiently. This mediator tool resolves the contradiction by enabling high-yield collection while protecting hands from sharp shell injuries.
Solution Approach 2:
The sand rake is divided into functional segments: the handle for user grip, the support component for structural stability, and the filter body with teeth for excavation and collection. This segmentation allows each part to perform its specific function optimally, with the filter body's mesh structure enabling efficient shellfish separation from sand while protecting the user's hands.
2Object-affected harmful factors
If pry bars or clamps are used to pick out shellfish, then hand safety is improved, but collection efficiency becomes highly inefficient
Solution Approach 1:
The sand rake merges multiple functions into a single tool: the teeth on the filter body front edge provide excavation capability similar to pry bars for hand safety, while the mesh structure simultaneously enables efficient collection and separation of shellfish from sand. This combination resolves the contradiction by achieving both hand protection and high collection efficiency that separate tools could not provide.
Solution Approach 2:
The sand rake is a multi-functional tool that combines excavation (teeth), filtration (mesh body), and collection capabilities in one device. Unlike pry bars or clamps that perform only single functions, the sand rake universally handles both the safety aspect of extracting shellfish from sand and the efficiency aspect of collecting them, resolving the productivity-contradiction.
3Productivity
If a filter body with inclined surface and teeth is used, then excavation efficiency and harvest yield increase, but device structure becomes more complex
Solution Approach 1:
The filter body incorporates local quality variations: the front side has an inclined surface with teeth for efficient excavation and penetration, while the body consists of a mesh structure for filtration. This localized functional differentiation achieves high excavation efficiency without requiring complex overall structure, as each area is optimized for its specific purpose.
Solution Approach 2:
The inclined surface of the filter body front side provides a curved, aerodynamic shape that facilitates easier penetration into sand and more efficient scooping motion. This curvature design improves excavation efficiency while maintaining relatively simple structure, resolving the contradiction between productivity and device complexity.
Data Source
AI summary
The sand rake of the present invention includes: a filter body, having an open filtering space and a plurality of filtering holes distributed across all sides thereof, a front side of the filter body being formed as an inclined surface and having a top edge with a plurality of teeth, while a bottom side of the filter body being formed as a flat surface; a support component, disposed in the filtering space of the filter body; and a handle, disposed at a rear side of the filter body. Accordingly, by using the specially-structured filter body of the sand rake, it replaces the user's hand in collecting shellfish organisms, increasing the harvest yield and enhancing safety during use.