Aircraft Galley Trolley Handling Device with Rotating Hook
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Solution Overview
Problem
Existing trolley arrangements in aircraft galleys are not suitable for securely pushing trolleys back into the container after use, making it difficult to manage trolley storage and retrieval efficiently.
Innovation Solution
A trolley-handling device with a linear guide, a rotating pulling and pushing bar equipped with a hook, and a handling bar connected via a joint, allowing for both pulling and pushing of trolleys into the container, with ergonomic design features like a handling grip and multiple hooks for secure engagement and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple rod with a hook is used to pull trolleys out of the container, then the device structure is simple, but it is not suitable to securely push in all trolleys into the trolley container
Solution Approach 1:
The handling bar is made rotatable around the longitudinal axis of the pulling and pushing bar, allowing the hook to be oriented in different directions. This dynamic adjustment enables the hook to engage with trolleys whether pulling out or pushing in, resolving the limitation of the fixed simple rod design
Solution Approach 2:
The same pulling and pushing bar with hook is used for both pulling trolleys out and pushing them in. By making the handling bar rotatable, a single device structure achieves multiple functions (pulling and pushing) that would otherwise require different mechanisms
2Quantity of substance
If trolleys are stored in the rear part of the trolley container, then the storage capacity is improved, but the user must grab deeply below the working area to reach all trolleys
Solution Approach 1:
The handling device extends the reach capability in the longitudinal direction of the container. By having the pulling and pushing bar extend forward from the container rear, the user can operate the device from a comfortable position while the hook reaches deep into the container to engage trolleys at the rear
3Productivity
If multiple hooks are arranged at the pulling and pushing bar, then the handling of multiple trolleys is improved, but the device complexity increases
Solution Approach 1:
Instead of providing hooks at every possible position, the patent provides one or two hooks at strategic locations on the pulling and pushing bar. This partial provision is sufficient for handling multiple trolleys sequentially without requiring the user to reposition the entire device
Data Source
AI summary
A trolley arrangement for a galley of an aircraft has a trolley container in which at least two trolleys can be arranged in a longitudinal direction and a trolley-handling device for pulling and pushing a trolley longitudinally into the trolley container. This device has a linear guide with a stationary guiding bar and a slide movable along the guiding bar longitudinally, a pulling and pushing bar extending along a longitudinal axis, axially fixed on the slide, but rotatable about the longitudinal axis, a hook at a distal end of the pulling and pushing bar remote from the slide, a handling bar axially fixed on the slide or on the pulling and pushing bar, and a joint between the handling bar and the slide or the pulling and pushing bar, so that the handling bar and the pulling and pushing bar are axially connected and are rotationally coupled.