Trolley with Tiltable Roller Tray for Heavy Load Handling
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Solution Overview
Problem
Current load transfer methods, such as forklifts and towed trains, pose ergonomic and safety challenges when handling heavy loads over 350 kg due to difficulties in loading and unloading, which can lead to excessive effort and risk of injury for personnel.
Innovation Solution
A tiltable plate equipped with rollers on a trolley that pivots between transport and unloading positions, utilizing gravity to facilitate effortless unloading and incorporating a control lever and locking mechanism to ensure safe operation, particularly in the delivery zone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional forklifts or towed trains are used to transport heavy loads, then the loads can be moved from one location to another, but the loading and unloading operations require excessive manual effort and pose safety risks to personnel
Solution Approach 1:
The plate is made tiltable and pivotable between different positions (transport position and unloading position) to dynamically adapt to different operational requirements. This allows the plate to tilt during unloading operations, utilizing gravity to facilitate load removal without excessive manual effort, while maintaining stability during transport.
Solution Approach 2:
The rollers mounted on the plate enable loads to be rolled onto and off the plate with minimal manual intervention. During unloading, the tilted plate position combined with rollers allows loads to be discharged automatically under gravity, significantly reducing the effort required compared to traditional lifting methods.
2Ease of operation
If the plate is made tiltable to facilitate unloading, then gravity can assist in load removal, but the structure becomes more complex and may compromise stability during transport
Solution Approach 1:
The plate's tilting capability is implemented through a pivot mechanism that allows controlled movement between fixed positions. The plate can be tilted to a predetermined angle for unloading and then returned to a horizontal transport position, providing dynamic adaptability without requiring continuous adjustment or overly complex control systems.
Solution Approach 2:
The pivot axis of the plate is deliberately offset from the middle of the plate. This asymmetric positioning creates a center of gravity offset that facilitates automatic pivoting between positions and ensures stable locking in both transport and unloading positions, reducing the need for additional complex locking mechanisms.
3Ease of operation
If the plate is tilted at an angle to enable gravity-assisted unloading, then loads can be discharged more easily, but the loads may become unstable during transport
Solution Approach 1:
The plate operates in discrete stable positions rather than continuous angles. During transport, the plate maintains a horizontal position that ensures load stability. During unloading operations, the plate pivots to a predetermined tilted position where gravity assists load discharge. This dynamic positioning between fixed stable states ensures both transport stability and unloading efficiency.
Solution Approach 2:
The rollers replace the need for manual lifting and positioning mechanisms. By combining rollers with the tilted plate position, the system utilizes rolling friction and gravity instead of complex mechanical lifting devices, simplifying the unloading process while maintaining load control through the offset pivot axis design.
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
The solution significantly improves ergonomics and safety by allowing heavy loads to be loaded and unloaded without excessive effort and ensures personnel safety by restricting unloading to the delivery zone, preventing accidents during transport.
Implementation Method 1
The rollers of the tray facilitate the loading on this tray and the unloading from it of very heavy loads contained in voluminous packages
Implementation Method 2
since the tray is tiltable, unloading can be carried out without excessive effort thanks to the effect of gravity
Data Source
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AI summary
Wheeled trolley for transporting, characterised in that it comprises a tray (11) equipped with rollers (12, 13) to support the loads, this tray (11) being tiltable.