All-Wheel Drive Container Handling Vehicle
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Solution Overview
Problem
Existing automated storage and retrieval systems (ASRS) with rail systems face limitations in the acceleration and deceleration of container handling vehicles, affecting efficiency and performance.
Innovation Solution
The container handling vehicle is designed with a unique wheel configuration, featuring a first and second set of wheels with pairs of wheels on opposite sides of the vehicle, all driven by a respective force transferring element and wheel motor arrangement, achieving all-wheel drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional wheel drive configuration is used in container handling vehicles, then device complexity is reduced, but acceleration and deceleration capabilities are limited
Solution Approach 1:
The wheel drive system is segmented into multiple independently controllable wheel motors, with each motor driving a specific wheel. This segmentation allows individual wheel control for optimized acceleration and deceleration while distributing the complexity across modular components rather than a single complex drive mechanism.
Solution Approach 2:
The wheel motor arrangement enables dynamic control of each wheel's driving force, allowing the system to adaptively adjust power distribution to all wheels based on real-time operational requirements. This dynamic capability significantly improves acceleration and deceleration performance compared to conventional fixed drive configurations.
2Reliability
If all-wheel drive configuration is implemented, then performance and stability on rail system are improved, but device complexity increases
Solution Approach 1:
The wheel motors are merged into an integrated arrangement where all wheels are coordinated through a unified control system. This merging approach ensures synchronized operation of all wheels for enhanced stability on the rail system while consolidating control functions to manage complexity.
Solution Approach 2:
Each wheel motor serves multiple functions: providing driving force during acceleration, enabling controlled deceleration, and contributing to overall vehicle stability on the rail system. This multi-functionality maximizes the utility of each component, improving reliability without proportionally increasing complexity.
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
This configuration enhances the acceleration and deceleration capabilities of the container handling vehicle, improving its overall performance and stability on the rail system.
Implementation Method 1
a wheel motor arrangement which comprises at least one wheel motor arranged in the first section, wherein each of the force transferring elements is connected to the wheel motor arrangement
Implementation Method 2
each of the force transferring elements is connected to the wheel motor arrangement
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A container handling vehicle (601) for operation on a rail system (108) of an automated storage and retrieval system (1) comprises: a first set of wheels (601b) for driving in a first direction (X) and a second set of wheels (601c) for driving in a second direction (Y); wherein each of the first set of wheels (601b) and the second set of wheels (601c) comprises a respective first pair of wheels (601b',601c') on a common side of the vehicle and a respective second pair of wheels (601b",601c") on a common side of the vehicle, and each first and second pair of wheels (601b',601c',601b",601c") is driven by a respective common force transferring element (606';606";607';607"); and wherein the container handling vehicle (601) comprises a wheel motor arrangement and wherein each of the force transferring elements (606';606";607';607") is connected to the wheel motor arrangement.