Unidirectional Shuttle Aisles for Automated Storage Throughput

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Solution Overview

Problem

Existing automated storage and retrieval systems (ASRS) face challenges with shuttle traffic congestion and inefficiencies due to bidirectional travel within storage aisles, leading to gridlock and reduced system throughput.

Innovation Solution

Implementing a unidirectional shuttle traffic flow pattern within storage aisles and parallel inter-aisle shuttle outlet tracks to facilitate continuous shuttle traffic flow, allowing simultaneous operation of multiple shuttles and minimizing bottlenecks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If bidirectional travel is implemented within storage aisles, then shuttles can access storage locations from both directions, but shuttle traffic congestion and gridlock occur reducing system throughput

Engineering Contradiction:

Improveshuttle accessibility to storage locationsVSAvoidsystem throughput

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system segments shuttle traffic into dedicated unidirectional lanes, separating traffic flow by direction to eliminate congestion and gridlock while maintaining full accessibility to storage locations through the organized lane structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of allowing bidirectional travel within the same aisle space, the system inverts the approach by implementing unidirectional travel in parallel aisles, where each aisle is dedicated to a specific travel direction, thereby preventing head-on conflicts and improving throughput

Inventive Principle:

Principle #13The other way round (Inversion)

2Productivity

If parallel inter-aisle shuttle outlet tracks are implemented, then shuttle traffic flow is facilitated and bottlenecks are minimized, but device complexity increases

Engineering Contradiction:

Improveshuttle traffic flow efficiencyVSAvoidtrack system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system adds a dimensional element by implementing parallel tracks alongside each other, allowing multiple shuttles to travel simultaneously in the same direction without interfering with each other, thereby increasing throughput while distributing the complexity across modular track segments

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Each parallel inter-aisle outlet track is designed to serve multiple functions: facilitating shuttle exit from storage aisles, enabling shuttle transfer between aisles, and providing backup capacity for high-volume operations, thereby maximizing the utility of the added infrastructure

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12459740B2Automated shuttle materials handling and storage systems and methods of using the same

Publication Date: 2025.11.04 INTELLIGRATED HEADQUARTERS LLC

AI summary

Various embodiments are directed to an automated storage and retrieval system and method of operating the same. In various embodiments, an automated storage and retrieval system comprises a plurality of storage aisles, each defined in part by a unidirectional shuttle traffic flow pattern; a plurality of shuttles configured to travel throughout the system to execute materials handling operations; at least one vertical lift; a plurality of inter-aisle shuttle outlet tracks configured to facilitate shuttle traffic flow in at least substantially the same direction, each comprising: a first inter-aisle shuttle outlet track comprising at least one lift interface position to facilitate shuttle traffic flow to at least one vertical lift; and a second inter-aisle shuttle outlet track arranged in an at least substantially parallel configuration relative to the first inter-aisle shuttle outlet track; wherein the inter-aisle shuttle outlet tracks enable shuttle transfer between the first and second inter-aisle shuttle outlet tracks.