Intra-hoistway Measurement System for Elevator Installation
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Solution Overview
Problem
Current elevator installation methods require skilled labor to manually measure dimensions within an elevator hoistway, leading to inefficiencies and labor-intensive processes due to the need for expert workers, which is exacerbated by declining expert worker populations in developed countries.
Innovation Solution
An intra-hoistway measurement system comprising a reference laser device mounted on the hoistway ceiling, a mobile measuring device with attitude detection, and a hoisting device that moves the measuring device up and down to automatically measure dimensions, utilizing a laser beam for reference and attitude detection to calculate three-dimensional coordinates and reduce manual labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement methods are used by skilled workers, then measurement accuracy can be maintained, but labor intensity increases and productivity decreases
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an automated optical measurement system. The system uses a laser beam to establish a reference axis and automated detectors to measure hoistway dimensions, eliminating the need for skilled workers to manually measure while maintaining high measurement accuracy through precise optical detection.
Solution Approach 2:
The measurement system performs self-measurement by automatically detecting its own position and orientation using the laser reference beam and attitude detection devices. The system independently calculates three-dimensional coordinates and dimensions without requiring human operators to manually record measurements, thereby improving productivity while maintaining precision.
2Productivity
If automated measurement systems are introduced, then productivity increases and labor is reduced, but system complexity increases
Solution Approach 1:
The automated measurement system is divided into distinct functional modules: a laser reference device that establishes the vertical axis, a mobile measuring device that moves along the axis, attitude detection devices that track position and orientation, and a calculation device that processes measurement data. This segmentation allows each component to perform its specific function independently, managing system complexity through modular design while maintaining high measurement efficiency.
3Manufacturing precision
If measurement is performed prior to installation, then installation precision is improved, but the need for expert workers with technical know-how increases
Solution Approach 1:
The system replaces the need for expert workers' technical know-how with automated optical measurement and calculation. The laser reference device and automated detection system objectively establish reference coordinates and calculate three-dimensional dimensions, eliminating subjective human judgment and ensuring consistent high-precision measurements regardless of worker skill level.
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
Enables accurate, automated measurement of elevator hoistway dimensions prior to installation, reducing labor requirements and improving efficiency by allowing workers to focus on other tasks, while ensuring precise alignment and gap settings for elevator installation.
Implementation Method 1
a reference laser device that is mounted to a structure on a ceiling or in an upper portion of a hoistway for an elevator and emits a laser beam toward a lowermost part
Implementation Method 2
a reference laser detection device that detects the laser beam emitted from the reference laser device
Implementation Method 3
an attitude detection device that detects its own attitude
Data Source
AI summary
The present invention provides an intra-hoistway measurement system automatically measuring dimensions within an elevator hoistway prior to elevator installation to reduce labor of workers. An intra-hoistway measurement system according to the present invention includes: a reference laser device that is mounted to a structure on a ceiling or in an upper portion of the hoistway for an elevator and emits a laser beam toward a lowermost part; a mobile measuring device that has a plane measuring device to measure horizontal dimensions within the hoistway; and a moving device that is mounted to the structure on the ceiling or in the upper portion of the hoistway and moves the mobile measuring device up and down. The mobile measuring device has a reference laser detection device that detects the laser beam emitted from the reference laser device, and an attitude detection device that detects its own attitude.