Incremental Measuring Tape Extension for Elevator Construction
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Solution Overview
Problem
Elevator systems in construction phases face challenges in efficiently installing and operating measuring tape arrangements along evolving travel paths without incurring high costs or time expenditures, as existing solutions require complete building completion before system installation and operation.
Innovation Solution
A one-piece measuring tape arrangement with a retaining structure and receiving device allows for incremental extension of the travel path, enabling the measuring tape to be easily extended and secured, using a fastening device that prevents damage and allows for direct access to the measuring tape supply, facilitating quick installation and operation during building construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the elevator system is installed only after complete building completion, then the building structure is fully ready and stable, but the construction time is extended and external transport elevators are required
Solution Approach 1:
The measuring tape arrangement is designed to be dynamically extendable along the travel path. The measuring tape can be extended incrementally as floors are completed, allowing the elevator system to adapt to the evolving building structure rather than requiring complete structural readiness before installation
Solution Approach 2:
The measuring tape is divided into modular sections that can be installed and extended floor by floor. This segmentation allows the measuring system to be installed incrementally as each floor is completed, enabling early elevator operation without requiring the entire building to be finished
2Measurement precision
If the measuring tape is installed for the complete final travel path length, then the full measurement range is available, but the installation cost and complexity increase for construction phase usage
Solution Approach 1:
The measuring tape arrangement transitions from a static full-length installation to a dynamic, incrementally extendable system. The measuring tape can be extended as needed as floors are completed, reducing initial installation complexity while maintaining full measurement capability when required
Solution Approach 2:
The retaining structure and receiving device are pre-installed at the upper end of the travel path, preparing the system for future measuring tape extensions. This preliminary action enables quick extension of the measuring tape as floors are completed without requiring complex reinstallation
3Device complexity
If the measuring tape supply is not easily accessible, then the retaining structure is simpler, but the time and cost for extending the measuring tape increase
Solution Approach 1:
The retaining structure serves multiple functions: it provides structural support for the measuring tape, positions the fastening device, and houses the receiving device for the measuring tape supply. This multi-functionality integrates the supply storage into the structural component rather than adding separate storage elements
Solution Approach 2:
The receiving device integrated into the retaining structure enables workers to easily access and extend the measuring tape supply as needed during construction. The system is designed to be self-sufficient, with the measuring tape supply readily available at the upper end where extensions are most likely needed
Data Source
AI summary
A measuring tape arrangement is used in an elevator system for determining a position of an elevator car along a travel path. The measuring tape arrangement has a one-piece measuring tape arranged along the travel path, wherein varying location information is stored along the measuring tape, by which information a current position of the car relative to the measuring tape can be determined, and a retaining structure arranged at an upper end of the travel path on which structure the measuring tape is fastened by a fastening device at a fixed position relative to the travel path. A receiving device receiving a measuring tape supply is arranged on the retaining structure, wherein a measuring tape piece of the measuring tape supply can arranged along an extension portion when the travel path is extended upwards by one extension portion.