Elevator Guide Rail Alignment Using Fixed Reference Points
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Solution Overview
Problem
The existing method for installing guide rails in elevator installations is time-consuming due to deformations caused by external influences, such as solar radiation and wind, which require frequent readjustments of guide-rail segments to maintain parallel alignment with the alignment cord.
Innovation Solution
A method that fixes an alignment element at two points, one of which is a reference point determined before installation, allowing for alignment of subsequent guide-rail segments relative to this fixed alignment-element portion, ensuring the guide rail remains parallel and reducing the need for extensive readjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment is performed by fixing guide-rail segments parallel to the alignment cord at each installation step, then each segment can be aligned individually, but the guide rail does not remain parallel to the alignment cord due to elevator shaft deformation from external influences
Solution Approach 1:
The method determines the target position of the last guide-rail segment before installation begins. This preliminary determination of the final position allows the alignment process to account for shaft deformations that will occur during installation, ensuring the guide rail remains parallel to the alignment cord throughout the entire installation process rather than just at individual segment levels
2Ease of manufacture
If individual guide-rail segments are aligned and fixed sequentially using the alignment cord, then installation can proceed step by step, but frequent readjustments are required due to shaft deformation
Solution Approach 1:
By determining the target position of the last guide-rail segment before installation begins, the method establishes a reference that accounts for anticipated shaft deformations. This allows installers to proceed with sequential segment installation without frequent readjustments, as the alignment process is guided by the pre-determined final position rather than requiring continuous realignment to the alignment cord
Solution Approach 2:
The method uses the determined target position of the last guide-rail segment as a feedback reference throughout the installation process. This reference position provides continuous guidance for aligning each segment, reducing the need for iterative readjustments that would otherwise be required due to shaft deformations
Data Source
AI summary
A method for installing a guide rail of an elevator installation arranged in an elevator shaft, wherein the guide rail includes a multiplicity of guide-rail segments that are aligned and arranged in a row one beside the other, includes the following steps: fixing an aligning element in the elevator shaft at a first point in relation to an aligned and fastened first one of the guide-rail segments, wherein the first point is positioned on a route provided by horizontally directed parallel displacement of the route formed by the first guide-rail segment; fixing the aligning element at a second point, in the form of a reference point, in the elevator shaft, an aligning-element portion for aligning a second one of the guide-rail segments therefore being formed between the first and the second points; and aligning the second guide-rail segment relative to the aligning-element portion.