Elevator Rope Elongation Detection With Threshold Triggering
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Solution Overview
Problem
Existing elevator rope elongation detection technologies are limited in applicability, have complex structures, and suffer from low sensitivity and false detection triggers, particularly in emergency situations.
Innovation Solution
A device comprising brackets, a coupling member, and a trigger is used to detect elevator rope elongation, with adjustable sensitivity and structure for flexible installation, avoiding false triggers by using a coupling member that contacts the bracket only after exceeding a threshold displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing detection devices are used, then rope elongation can be detected, but the detection sensitivity is low and small elongation rates cannot be detected
Solution Approach 1:
The device uses a dynamic trigger mechanism where the trigger can be driven to a trigger position by the coupling member when displacement exceeds a threshold. This dynamic response allows the system to distinguish between normal vibrations and actual rope elongation events, improving detection sensitivity while preventing false triggers during emergency stops or normal operations.
Solution Approach 2:
The invention changes the detection parameter from direct displacement measurement to threshold-based trigger activation. By setting a specific threshold value for the coupling member displacement, the system can detect only significant elongation events while ignoring minor variations, thereby improving measurement precision without increasing false detection rates.
2Adaptability or versatility
If detection devices are installed on specific elevator equipment, then detection can be performed, but the adaptability is limited and cannot be applied to other elevator configurations
Solution Approach 1:
The detection device is designed with universal mounting brackets that can be installed on various elevator equipment types including steel wire ropes, steel belts, and different rope head device configurations. The coupling member and trigger mechanism remain the same while only the mounting brackets need to be adapted, enabling the core detection system to serve multiple elevator configurations without redesign.
Solution Approach 2:
The device is divided into modular components: mounting brackets, coupling members, and trigger mechanisms. This segmentation allows the mounting brackets to be customized for different elevator types while the core detection mechanism remains standardized, reducing overall device complexity while improving adaptability.
3Reliability
If detection devices are installed, then rope elongation monitoring is achieved, but the structure is complicated and installation location is limited
Solution Approach 1:
The invention extracts the essential detection function from a complex mounting structure. By using a simple coupling member that can be driven by bracket displacement and a trigger mechanism that responds to coupling member movement, the core detection function is isolated from the mounting details, simplifying the overall structure while maintaining detection accuracy.
Solution Approach 2:
The coupling member acts as an intermediary between the bracket displacement and the trigger activation. This intermediary component translates various types of bracket movements into a standardized trigger signal, simplifying the connection between different installation locations and the detection mechanism while ensuring reliable detection.
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
The device provides accurate, flexible, and reliable detection of elevator rope elongation, ensuring safety and reliability by preventing false triggers and adapting to various elevator configurations.
Implementation Method 1
one and more brackets connected to an elastic reset member in the rope head device
Data Source
AI summary
A device and a method for detecting elevator rope elongation, and an elevator. An elevator rope is connected to a rope head device and an operating device in an elevator, and the device for detecting elevator rope elongation includes: one and more brackets connected to an elastic reset member in the rope head device, a coupling member connected to at least one of the brackets and configured to be driven into a trigger position by the at least one bracket when the displacement of the elastic reset member exceeds a threshold value due to reduction of compression amount, and a trigger connected to the coupling member and configured to be triggered to generate a trigger signal when the coupling member is driven into the trigger position.