Elevator Storage Box with Dual-Load Straps
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Solution Overview
Problem
Existing solutions for embedding holding strap elements in concrete, such as elevator assembly anchors and connecting elements, do not adequately address the varying profile of requirements for flexibility and load distribution, leading to inefficiencies and potential accidents in elevator shafts.
Innovation Solution
A storage box with at least two strap elements, where one is designed for high tensile forces and the other for smaller forces, allowing for secure attachment and alignment of elevator car elements and fall protection, with distinct markings and anchor elements for optimal load distribution and material efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple strap elements with equal load capacity are used, then uniform force distribution is achieved, but material efficiency and flexibility for different load requirements are reduced
Solution Approach 1:
The patent applies local quality by designing strap elements with different load capacities (first strap element for higher loads, second strap element for lower loads) to match specific functional requirements at different locations. This allows optimal material usage where each strap element is sized appropriately for its intended load, rather than using uniform high-capacity straps throughout, thus improving material efficiency while maintaining reliability where needed.
2Reliability
If additional structural elements (T-beam or I-beam) are added below the ceiling, then secure attachment of elevator car elements is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent merges the anchoring function and the load-bearing strap elements into a single integrated storage box assembly. The storage box contains multiple strap elements with different load capacities, combining what would traditionally require separate structural beams and multiple attachment points. This reduces device complexity and space requirements while maintaining secure attachment capability through the anchor element embedded in the ceiling.
3Ease of manufacture
If strap elements are not clearly identified, then manufacturing simplicity is maintained, but ease of operation and safety are reduced due to incorrect selection
Solution Approach 1:
The patent applies color changes by providing distinct markings on strap elements (such as color coding or labels indicating load capacity) to enable easy identification and correct selection during operation. This simple visual differentiation method maintains manufacturing simplicity while significantly improving ease of operation and safety, allowing workers to quickly select the appropriate strap element based on the required load capacity without complex identification systems.
Data Source
Figure 1
Figure 2
AI summary
The depository box (10) has two retaining loop elements (12,14), where the former retaining loop element is formed from a rope element with larger length or for retaining larger forces than the latter retaining loop element. The depository box is provided with a detachable chamber (30), particularly a sheet chamber.