Self-Propelled Elevator Evaluation Device for Guide Rail Alignment
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Solution Overview
Problem
Ropeless elevator systems require frequent and costly maintenance, leading to system downtime, as existing inspection methods are time-consuming and inefficient in evaluating the alignment and performance of components like motor primaries and guide rails.
Innovation Solution
A self-propelled evaluation device with a motor secondary and diagnostic sensors travels along the motor primary and guide rails to assess parameters such as alignment, spacing, and performance, using both contact and non-contact sensors, and a data processing unit to provide detailed evaluations during installation, operation, and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional inspection methods are used to evaluate elevator system components, then measurement precision can be achieved, but loss of time and productivity deteriorate due to time-consuming manual inspection processes
Solution Approach 1:
The evaluation device is self-propelled along the motor primary, automatically performing measurements without requiring external assistance or manual intervention at each measurement point. The device independently travels through the hoistway, collects data from multiple sensors, and evaluates component alignment and spacing autonomously, eliminating the need for manual inspection operations.
Solution Approach 2:
Traditional manual mechanical inspection methods are replaced with an automated evaluation device that uses diagnostic sensors (including non-contact sensors) and electronic data processing. The mechanical act of manual measurement and recording is substituted with automated sensing, electronic data collection, and computer-based analysis systems.
2Measurement precision
If traditional inspection methods are used to evaluate elevator system components, then measurement precision can be achieved, but device complexity increases due to the need for multiple inspection equipment and procedures
Solution Approach 1:
Multiple measurement functions are merged into a single integrated evaluation device. The device combines diagnostic sensors for measuring alignment, spacing, and other parameters, along with a self-propulsion mechanism and data processing capabilities, into one unified system that performs comprehensive evaluations without requiring separate inspection equipment for each parameter.
Solution Approach 2:
The evaluation device is designed as a universal inspection system capable of measuring multiple parameters (alignment, spacing, runout) across different components (motor primaries, guide rails) using the same platform. This multi-functional design eliminates the need for specialized inspection equipment for each specific measurement task.
3Reliability
If frequent maintenance is performed to ensure optimal performance, then reliability improves, but loss of time and productivity worsen due to system downtime
Solution Approach 1:
The evaluation device performs preliminary assessments of component condition by measuring alignment, spacing, and other critical parameters before failures occur. By detecting deviations from optimal parameters during routine evaluations, the system enables proactive maintenance scheduling that prevents catastrophic failures while minimizing unplanned downtime.
Solution Approach 2:
The evaluation device provides continuous feedback on the condition of motor primaries, guide rails, and other components by measuring key parameters and comparing them against optimal values. This feedback mechanism enables condition-based maintenance strategies where maintenance activities are triggered by actual measured conditions rather than fixed schedules, optimizing the balance between reliability and downtime.
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 efficient and timely evaluation of elevator system components, reducing maintenance downtime and costs by providing detailed profiles and maps of guide rails and motor primaries, allowing for proactive maintenance and improved ride quality.
Implementation Method 1
a self-propelled drive unit including a motor secondary
Data Source
AI summary
An evaluation device for an elevator system includes a self-propelled drive unit including a motor secondary to travel along a motor primary in a hoistway, and at least one diagnostic sensor.