Single-Level Storage Retrieval Device for Order Picking
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Solution Overview
Problem
Existing order-picking systems face inefficiencies in achieving high performance with simple structure and minimal storage space, often requiring complex setups and double-deep storage, which limits warehouse utilization and scalability.
Innovation Solution
Implementing a single-level storage and retrieval device with coordinated retrieval lifts and buffers to ensure transport units are sorted and delivered in the desired order directly to collection routes, allowing for flexible storage distribution and efficient use of space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If containers are temporarily stored in a sorting buffer with vertical operating device, then sorted output of containers at picking station is possible, but the achievable performance is not sufficient and the system is complex
Solution Approach 1:
The system is divided into multiple modules, each with its own container rack, storage track, retrieval track, and operating device. Each module independently handles a specific picking order, enabling parallel processing and reducing overall system complexity while maintaining sorted output capability.
Solution Approach 2:
Containers belonging to a picking order are stored in one module in advance until all containers of the order are available. This preliminary storage action enables efficient batch retrieval and sorted output without requiring complex real-time coordination across the entire system.
2Productivity
If containers are stored in one module until all containers of the order are available, then good sorting performance is possible, but a free and thus good utilization of the entire warehouse is not possible
Solution Approach 1:
Each module serves multiple functions: it acts as both a storage unit for specific orders and a flexible storage location for any container. The modular design allows dynamic allocation of storage space across all modules, enabling high warehouse utilization while maintaining the capability to store complete orders in single modules for efficient retrieval.
3Productivity
If lifting beams are arranged parallel to the collection section in one line, then high performance when operating several retrieval lanes is achieved, but the storage size can only be scaled up by adding more levels or extending the overall system
Solution Approach 1:
The system transitions from a single-line parallel arrangement to a grid-like two-dimensional layout where storage racks are arranged in rows and columns with intersecting storage and retrieval tracks. This dimensional change enables horizontal expansion by adding more rack positions without increasing vertical levels, improving scalability while maintaining high retrieval performance through multiple access points.
Data Source
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AI summary
The preparation process involves using a single-plane rack servicing unit (5) and a lifting device (8) to take the transportable units (T) to an exit track (6) after the rack path (2). The exit track is connected directly to at least one collecting section (S). The rack servicing unit, lifting device and exit track are controlled and operated to arrange the units in the required preset sequence.