Elevator Rope Activation for Remote Safety Stopper Control
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Solution Overview
Problem
Existing elevator safety devices require manual activation from a specific location, making it difficult and time-consuming to activate multiple stoppers or switches simultaneously, especially when they are far apart, which can compromise safety during maintenance.
Innovation Solution
An elevator arrangement using a flexible element, such as a rope, attached to a fixed structure of the elevator shaft, allowing shiftable elements like stoppers or switches to be activated remotely from any landing door, enabling simultaneous activation without the need for the serviceman to be present at the shaft's end or in its vicinity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual activation of stoppers is required from a specific location, then the stoppers can be activated, but the serviceman must be at a certain location in the elevator shaft which increases the time and complexity of activation
Solution Approach 1:
A flexible element (rope) acts as an intermediary to transmit the activation action from the landing door to the stopper in the elevator shaft. This allows the serviceman to activate the stopper from a convenient location at the landing door without needing to be physically present at the shaft bottom where the stopper is located, thereby reducing activation time and improving operational convenience.
2Reliability
If multiple stoppers are activated sequentially from different locations, then each stopper can be activated, but the process becomes complex and time-consuming
Solution Approach 1:
Multiple stoppers are connected through a common flexible element (rope) system, allowing them to be activated simultaneously from a single location. When the serviceman pulls the rope at the landing door, all connected stoppers are activated at the same time, creating multiple safety spaces without requiring sequential activation from different locations, thus reducing process complexity while maintaining reliability.
3Ease of manufacture
If the serviceman enters the elevator shaft to activate stoppers, then the stoppers can be activated directly, but safety risks increase and the process becomes more complex
Solution Approach 1:
The flexible element (rope) serves as a mediator that transmits the activation force from the landing door to the stopper without requiring the serviceman to enter the elevator shaft. This eliminates the safety risks associated with entering the shaft while maintaining the simplicity of the activation process, as the serviceman can operate the stopper from the safe location at the landing door.
Data Source
AI summary
An elevator arrangement, comprising an elevator car arranged to move in an elevator shaft or equivalent, preferably along car guide rails, and an element which is disposed in the elevator shaft or equivalent and is shiftable between an activated state and an inactivated state, and an activating device for shifting the said element between the activated and inactivated states. The activating device includes a flexible element, such as e.g. a rope or equivalent, movably attached to a fixed structure of the elevator shaft or equivalent, and the said flexible element is connected to the said shiftable element in a manner permitting the shiftable element to be shifted by means of the flexible element.