Segmented Insert Weight for Aircraft Trolley Balance
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Solution Overview
Problem
Current methods for simulating a loaded trolley in aircraft for weight distribution and balance during testing are inadequate, particularly due to issues with weight fixation and even distribution using sandbags.
Innovation Solution
An insert weight with a groove on the longitudinal side that fits into strips on the trolley's side wall elements, allowing for even weight distribution and secure fixation, designed as a flat plastic board with recesses and cutouts for easy handling and high strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If sandbags are used to weigh down the trolleys for weight simulation, then the trolley weight can be simulated, but the weight distribution becomes uneven and the securing is insufficient
Solution Approach 1:
The weight simulation is divided into multiple standardized insert weights (typically up to 12 per trolley) that can be individually positioned. Each insert weight is a discrete unit with standardized dimensions and weight, allowing precise distribution throughout the transport area rather than using undivided sandbags.
Solution Approach 2:
The insert weights are designed with specific local features including grooves on longitudinal sides for secure engagement with strips, recesses for handling, and cutouts for door mechanism accommodation. These localized structural qualities ensure proper positioning and secure fixation at each weight location.
2Quantity of substance
If sandbags are used to simulate loaded trolley weight, then the total weight can be achieved, but the securing is insufficient and weight distribution is uncertain
Solution Approach 1:
The weight simulation system is segmented into multiple standardized insert weights that can be individually secured throughout the trolley. This segmentation allows each weight unit to be independently fixed using the groove-strip engagement mechanism, ensuring reliable securing of the total weight.
Solution Approach 2:
The groove and strip act as intermediary elements that mediate between the insert weight and the trolley structure. The groove on the insert weight engages with the protruding strip from the side wall element, creating a secure mechanical connection that reliably fixes the weight in position.
3Quantity of substance
If conventional trolleys are used for weight simulation, then the trolley structure is available, but the weight distribution cannot be precisely controlled without overloading
Solution Approach 1:
The payload weight is segmented into multiple standardized insert weights of known individual weight and dimensions. This allows precise control of weight distribution by strategically placing a specific number of insert weights in designated locations within the transport area, preventing overloading while achieving required weight distribution.
Solution Approach 2:
The system allows adjustment of weight distribution parameters by varying the number, position, and arrangement of insert weights. The standardized dimensions and weight of each insert weight enable precise control of the overall weight distribution parameters within the trolley structure.
Data Source
Figure 1~2
AI summary
The invention relates to an insert weight for a trolley and its use for balancing an aircraft.