Lifting Device for Container Local Repositioning
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Solution Overview
Problem
Heavy containers become too heavy to be moved by smaller construction site equipment once filled, limiting their repositioning within a site without requiring a hook-lift truck, which is costly and inefficient.
Innovation Solution
A lifting device with wheels attached to one end of the container, featuring an actuator and undercarriage that can lift the container for local movement by smaller vehicles like tractors or construction engines, allowing for flexible positioning and transport without occupying more space than standard containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a container is placed on the ground by a hook-lift truck, then the container can be left at a construction site, but the container becomes too heavy to be moved by smaller construction site equipment once filled
Solution Approach 1:
The lifting device is divided into separate functional components: an undercarriage with wheels for support and movement, and an actuator system for lifting. This segmentation allows the lifting function to be added to existing containers without requiring the entire container system to be redesigned, enabling movement capability while maintaining container integrity.
Solution Approach 2:
The undercarriage is designed to be movable relative to the container, transitioning between a first position (not engaging the supporting surface) and a second position (engaging the supporting surface). This dynamic configuration allows the same device to adapt to different operational states: lifting mode and transport mode, resolving the contradiction between stability during lifting and mobility during transport.
2Ease of operation
If a hook-lift truck is used to move a filled container, then the container can be repositioned, but the cost increases and waiting time increases
Solution Approach 1:
The lifting device enables the container to be self-sufficient for lifting and local repositioning operations. Smaller construction site equipment with standard lifting capabilities can independently move the container without requiring specialized hook-lift trucks, eliminating waiting time and reducing operational costs while maintaining ease of repositioning.
3Adaptability or versatility
If a lifting device is attached to the container, then the container can be lifted and moved locally, but the device occupies additional space
Solution Approach 1:
The undercarriage is designed to be positioned at least partially inside a recess in the container when not in use. This nesting approach allows the lifting device to be stored within the container's own structure, minimizing additional external volume while maintaining full lifting and movement functionality when needed.
Data Source
AI summary
A lifting device is for a container. The lifting device is attached at one end of the container. The lifting device includes an undercarriage provided with one or more wheels; and an actuator arranged to move the undercarriage of the lifting device between a first position, not engaging the supporting surface, and a second position, engaging the supporting surface, so that, in the position of the undercarriage engaging the supporting surface, one end of the container is lifted up from the supporting surface. The undercarriage of the lifting device is connected to the actuator via at least one connecting body, the connecting body being connected to the actuator and movable therewith.