Elevating Machine Acoustic Inspection for Abnormal Component Localization
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Solution Overview
Problem
Existing inspection methods for mechanical equipment, such as elevators, fail to accurately determine the optimal measurement position for components based on their positional relationship with sound collecting units, leading to inadequate inspections and maintenance inefficiencies.
Innovation Solution
An elevating machine inspection device that includes a model selection unit, measurement unit, storage unit, component specification unit, and output unit to analyze sound data, identify abnormal components, and determine optimal measurement positions using a smart device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sound collecting units are arranged in advance at fixed positions, then the inspection system has a simple structure and is easy to operate, but it cannot perform appropriate inspections at measurement positions suitable for abnormal component locations
Solution Approach 1:
The patent makes the measurement position dynamic by allowing the inspector to freely move the portable inspection device to different locations based on the specified abnormal component position. The system transitions from fixed static measurement positions to dynamic mobile measurement positions, enabling appropriate measurement locations to be selected according to the actual abnormal component location while maintaining ease of operation through automated position guidance.
2Measurement precision
If multiple sound collecting units are provided to cover all possible component positions, then appropriate measurement can be performed for any abnormal component, but the device complexity and cost increase
Solution Approach 1:
The patent makes a single portable inspection device perform multiple functions by enabling it to measure sounds from any component position throughout the elevating machine. The device is designed to be universally applicable to all components, replacing the need for multiple fixed sound collecting units. The portable device can be moved to different locations and the control device guides its positioning to measure various components effectively.
Solution Approach 2:
The patent uses a portable inspection device that copies the functionality of fixed sound collecting units. Instead of having multiple permanent installation points, a single portable device replicates the sound collection capability at different locations as needed, reducing overall system complexity while maintaining measurement precision for any component.
3Ease of manufacture
If fixed sound collecting units are used, then the system is simple to install and maintain, but inspection efficiency is reduced when abnormal components are at positions far from the fixed units
Solution Approach 1:
The system transitions from static fixed installation to dynamic mobile inspection. The portable inspection device can be quickly moved to different locations based on where abnormalities are detected, significantly improving inspection efficiency when abnormal components are at positions far from any fixed units while maintaining ease of manufacture through the use of standard portable devices.
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 precise identification of abnormal components and optimal measurement positions, reducing inspection time and maintenance costs by accurately determining component health and replacement times.
Implementation Method 1
measuring a sound generated from the elevating machine
Implementation Method 2
specifies a component generating a sound generated at the time of an abnormality, by use of a frequency component of the measurement data
Data Source
AI summary
The present invention measures a sound generated from mechanical equipment, specifies an abnormal component from measurement data, indicates, if a plurality of specified components exists, an additional measurement position, and compares a plurality of measured data, to specify an arrangement position of the abnormal component.