Through-Door Skip With Integrated Lifter Rim And Locking Mechanism
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Solution Overview
Problem
Existing pass-through skips face challenges in optimizing lateral dimensions to achieve maximum interior volume while maintaining a limited exterior size for easy door passage and ensuring safe operation during emptying and lifting.
Innovation Solution
A pass-through skip design with a lifter system where uprights and joints are integrated into the upper rim, allowing for a maximum interior volume with reduced exterior width, and an automatic locking/unlocking mechanism for remote operation by the crane operator, ensuring safe and efficient emptying and lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the uprights of the lifter are arranged outside the upper rim to receive transverse axes of joints, then the lifting operation is reliable, but the exterior width increases reducing interior volume
Solution Approach 1:
The patent merges the uprights with the upper rim by integrating the transverse axes of joints directly into the rim structure. This eliminates the need for separate uprights extending outside the rim, thereby reducing the exterior width and maximizing interior volume while maintaining reliable lifting operation through the integrated joint mechanism.
2Volume of stationary object
If the uprights are integrated into the upper rim to reduce exterior width, then interior volume is maximized, but the lifting reliability may be compromised
Solution Approach 1:
The patent segments the upper rim into multiple reinforcement zones that correspond to the attachment points of the transverse axes. This segmentation allows the integrated structure to maintain localized strength and rigidity at critical lifting points, ensuring reliable operation while keeping the overall exterior width minimized for maximum interior volume.
3Ease of operation
If the skip has a wide opening on top to facilitate filling, then loading is easier, but the exterior width increases making door passage difficult
Solution Approach 1:
The patent resolves this contradiction by tilting the front face of the skip forward, creating a three-dimensional solution that maintains a wide top opening for easy loading while keeping the horizontal exterior width within door passage limits. The inclined front face allows the wide opening to extend in the longitudinal dimension rather than increasing the lateral width.
Data Source
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AI summary
The present invention relates to a through-door construction skip (1) of the type comprising a lifting beam (20) having a transverse bar (22) equipped with a lifting means (24) and having at its ends two uprights (26), each comprising a base articulated on a lateral face (2) of the skip (1), said skip further having an upper rim (4) forming a stiffening contour. When the lifting beam (20) is in the folded position, each upright (26) with its articulation overlaps the corresponding portion of the upper rim (4), its width being substantially integrated into that of said rim. The lifting beam further has an automatic locking and unlocking system (32, 36) capable of maintaining said lifting beam in the closed position during the skip emptying operation.