AS/RS Shuttle Load Arms With Spring Finger Retrieval
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Solution Overview
Problem
Automated shuttles in AS/RSs face challenges in effectively retrieving and handling objects with unique characteristics such as size and shape due to reliance on complex, costly, and unreliable electronic retrieval components, leading to inefficiencies and system failures.
Innovation Solution
A shuttle design featuring retractable load arms with mechanical fingers hingedly connected via one-way hinges and spring-loaded configurations, minimizing reliance on electronic components for object handling, and enabling efficient, reliable retrieval and transportation of objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If electronic retrieval components are used for object handling, then automation capability is improved, but system reliability deteriorates and maintenance costs increase
Solution Approach 1:
The patent replaces electronic retrieval components with a mechanically actuated system. A piston-cylinder assembly provides mechanical force to extend and retract load arms, while spring-loaded mechanical fingers with one-way hinges provide passive, reliable object engagement. This mechanical substitution eliminates complex electronics, sensors, and motors, thereby improving system reliability and reducing maintenance requirements while maintaining full automation capability through pneumatic actuation.
2Ease of operation
If mechanical fingers are extended into load area, then object handling capability is improved, but risk of physical interference deteriorates
Solution Approach 1:
The mechanical fingers are designed to be dynamically extendable and retractable rather than statically fixed. The piston-cylinder assembly extends the load arms and mechanical fingers into the load area only when needed for object engagement. During retrieval and transport, the fingers retract, eliminating physical interference with the object. This dynamic configuration allows the system to adapt its structure to operational requirements, providing handling capability when needed and avoiding interference when not needed.
3Adaptability or versatility
If retractable load arms are used, then adaptability to different objects is improved, but device complexity increases
Solution Approach 1:
The load arm assembly is segmented into multiple independent components: the load arm itself, mechanical fingers attached to the load arm, and a piston-cylinder assembly for actuation. This segmentation allows each component to perform its specific function independently while working together as a integrated system. The modular design enables adaptability to different object sizes and shapes without requiring complete system redesign, while keeping individual component complexity manageable.
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
The mechanical finger design reduces maintenance and operational costs while maintaining functionality, avoiding physical interference and ensuring reliable object handling in AS/RS environments.
Implementation Method 1
comprising at least one spring element that facilitates rotational movement of the mechanical finger relative to the first load arm between an expanded finger position and a retracted finger position
Data Source
AI summary
Various embodiments are directed to a shuttle configured for use in an AS/RS. In various embodiments, the shuttle comprises: a first load arm and a second load arm configured to retractably extend away from a shuttle body in parallel directions, the first and second load arms each being extendable between a retracted configuration and an extended configuration; a load bed including a load area configured to receive the object; and a retractable mechanical finger provided at a distal portion of the first load arm and configured to facilitate handling of the object, the mechanical finger being hingedly connected to the first load arm using a one-way hinge component that defines a portion of the range of rotational movement of the mechanical finger relative to the first load arm and comprising a spring element that facilitates rotational movement of the finger between an expanded finger position and a retracted finger position.