Elevator Alignment Tool with Laser and Rollers
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Solution Overview
Problem
Existing elevator alignment tools require multiple components to be installed in the elevator shaft and necessitate frequent adjustments, making them cumbersome and inefficient during installation and maintenance.
Innovation Solution
An alignment tool with a longitudinal frame and rollers that maintains continuous contact with the guide rail, connected to the elevator car via a rope or chain, utilizing magnets or springs for biasing and a laser for precise alignment, allowing for easy measurement and adjustment of guide rail positions without obstructing the construction area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple devices are installed in the elevator shaft for guide rail alignment measurement, then measurement accuracy is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent combines the laser emitter and receiver into a single integrated alignment tool that can be suspended from the elevator car. This eliminates the need for multiple separate devices to be installed in the shaft, reducing installation complexity while maintaining measurement accuracy through the integrated optical system.
Solution Approach 2:
The alignment tool serves multiple functions: it provides alignment measurement, acts as a reference for guide rail installation, and can be easily repositioned as the elevator car moves. This multi-functionality reduces the need for specialized devices for each measurement point, simplifying the overall system.
2Adaptability or versatility
If frequent adjustments are made to the alignment devices during installation, then adaptation to different installation stages is improved, but installation time and operational complexity increase
Solution Approach 1:
The alignment tool is designed to be dynamically suspended from the elevator car using a rope or chain, allowing it to move freely with the car during installation. This dynamic positioning eliminates the need for frequent manual adjustments to accommodate different installation stages, saving time while maintaining adaptability.
3Measurement precision
If the alignment tool is connected close to the elevator car, then alignment accuracy is improved, but interference with construction operations increases
Solution Approach 1:
The alignment tool uses a localized laser measurement system that focuses the optical path in a specific region near the guide rail. This localized approach maintains high measurement accuracy while minimizing the spatial footprint, reducing interference with construction operations in the elevator shaft.
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 and efficient guide rail alignment and adjustment during installation, reducing the need for manual realignment and minimizing interference with construction processes, while providing a secure and reliable monitoring system for maintaining guide rail straightness.
Implementation Method 1
a laser which is preferably arranged at the frame that the emitted laser beam extends vertically
Implementation Method 2
a carrier moving along a guide rail which carrier has a reflecting surface to reflect a laser beam emitted by a laser mounted on the shaft top or on the shaft pit whereby the reflected beam is received by a receiver
Implementation Method 3
a bias means, for example a (e.g. counterside) spring means to keep the frame and accordingly the rollers of the frame in contact with the guide rail
Data Source
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AI summary
The invention refers to an elevator alignment tool (22) comprising a longitudinal frame (26) having rollers (30) being configured to run along the surface of a guide rail (12) of an elevator construction (10), which frame comprises a bias means (32) for biasing the frame against the guide rail and a connecting part (24) configured to be connected to an elevator car or an installation time platform, which tool further comprises a laser (36) mounted to the frame. This alignment tool allows an easy alignment of new guide rails to be installed during elevator installation or an easy verification of the guide rail alignment of a ready built elevator construction.