Optical Projection Elevator Shaft Alignment
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Solution Overview
Problem
Current methods for installing elevators in elevator shafts are time-consuming and costly, requiring complex setups like drives and guidance systems for accurate dimension measurement, which complicates the process and increases expenses.
Innovation Solution
A method involving a model representing nominal elevator dimensions with a light source to project a light beam within the shaft, allowing for easy alignment and space verification, and a device comprising a frame with spatial alignment means and a light source for emitting a beam to define installation points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a platform with drive and guidance system is installed to measure elevator shaft dimensions, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces the mechanical platform with drive and guidance systems with a simple optical projection system. A model representing the elevator outline is positioned in the shaft, and a projector casts light beams to define the nominal position and dimensions. This substitution eliminates complex mechanical components while maintaining measurement accuracy through optical projection of the model's geometry onto the shaft walls and floor.
Solution Approach 2:
The patent uses a model that is a simplified copy or representation of the actual elevator outline with nominal dimensions. This model is positioned in the shaft and used to project reference lines for measurement, eliminating the need to measure the actual elevator or use complex measurement equipment. The model serves as a portable, simple replica that defines the required space.
2Measurement precision
If vertical ribbons are used to measure elevator shaft dimensions, then measurement can be performed, but loss of time increases
Solution Approach 1:
The patent replaces the time-consuming vertical ribbon measurement method with an optical projection system. The projector quickly establishes reference lines by projecting light beams from the model's edges, eliminating the need for manual ribbon suspension, marking, and measurement. This reduces measurement time significantly while maintaining accuracy.
Solution Approach 2:
The patent uses a pre-prepared model that already embodies the nominal elevator dimensions and outline. By positioning this model in the shaft and projecting its geometry, all necessary measurement references are established simultaneously in advance, rather than performing sequential measurements with ribbons at multiple points. This preliminary preparation of the model accelerates the on-site measurement process.
3Ease of operation
If a model with light source is used to define nominal position, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the model representing the elevator outline with a light source (projector) integrated into or associated with the model. This combination allows the model to simultaneously serve as both the dimensional reference and the projection device, eliminating the need for separate marking tools and simplifying the operation to positioning the single integrated unit in the shaft.
Solution Approach 2:
The patent replaces traditional mechanical alignment tools and manual marking procedures with an optical projection system. The light source projects visible beams that define the nominal position and dimensions directly onto the shaft surfaces, making it easier to visualize and mark installation points without complex mechanical alignment procedures.
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
This approach simplifies and accelerates the installation process, providing accurate space verification and cost-effective alignment of guide rails and other components within the elevator shaft.
Implementation Method 1
projecting a light beam starting from the light source, the light beam defining the nominal position along the prescribed travel direction in the elevator shaft
Data Source
AI summary
The invention relates to a method and device for installing an elevator in an elevator shaft, having the following steps: i) arranging a model in the elevator shaft, so that the arranged model represents nominal dimensions of an outline of the elevator; ii) arranging at least one light source at a nominal position of the model, so that the light source is directed in a provided travel direction of the elevator; iii) projecting a light beam starting from the light source, wherein the light beam defines the nominal position along the provided travel direction in the elevator shaft; and iv) using information about at least one location of at least one projection point of the light beam in the elevator shaft for installing the elevator.