Elevator Overspeed Governor Assembly With Torsion Spring Triggering
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Solution Overview
Problem
Existing elevator systems face limitations in structural construction, safety, reliability, manufacturing, and performance, particularly in effectively addressing overspeed conditions.
Innovation Solution
An overspeed governor assembly comprising a torsion spring coupled between a sheave and a centrifugal mechanism, which generates a pre-set load that triggers a safety device via a linkage when the elevator car exceeds safe speed, allowing for flexible adjustment of the spring load and enhanced safety measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a torsion spring is used to provide pre-set load in the overspeed governor, then the safety and reliability of the elevator system is improved, but the device complexity increases
Solution Approach 1:
The overspeed governor assembly is divided into distinct functional modules: the centrifugal mechanism that detects overspeed conditions, the torsion spring that provides pre-set load, and the linkage that transmits the triggering signal to the safety device. This segmentation allows each component to be optimized independently while maintaining overall system reliability.
Solution Approach 2:
The torsion spring is pre-loaded to provide a pre-set load before overspeed conditions occur. This preliminary action ensures that when overspeed happens, the centrifugal mechanism can immediately trigger the safety device without delay, improving response time and reliability while keeping the mechanism straightforward.
2Stability of the object's composition
If the centrifugal mechanism is mounted on the sheave via shafts, then the operational stability is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The centrifugal mechanism is integrated with the sheave through shafts, combining the rotation detection function with the existing drive component. This merging reduces the need for separate mounting structures and simplifies the overall assembly process while ensuring stable operation during elevator movement.
Solution Approach 2:
The shafts serving to mount the centrifugal mechanism on the sheave also serve as the rotation axis for the centrifugal weights. This multi-functionality reduces the number of separate components needed, simplifying manufacturing while maintaining operational stability through proper mechanical coupling.
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 solution improves the safety and reliability of elevator systems by enabling timely and effective response to overspeed conditions, expanding the application range of overspeed governors and enhancing operational stability and safety.
Implementation Method 1
at least one torsion spring coupled between a sheave and a centrifugal mechanism in the overspeed governor for providing a pre-set load
Implementation Method 2
the centrifugal force formed by the centrifugal mechanism when the elevator car overspeed is occurring, is greater than the pre-set load, for triggering the safety device via the linkage
Data Source
AI summary
An overspeed governor assembly for an elevator system, an elevator safety system, and an elevator system. The overspeed governor assembly comprises an overspeed governor, a linkage provided to enable the overspeed governor to associate with a safety device of the elevator, when an elevator car overspeed is occurring, to trigger the safety device to perform safety measures, and at least one torsion spring coupled between a sheave and a centrifugal mechanism in the overspeed governor for providing a pre-set load, and the centrifugal force formed by the centrifugal mechanism when the elevator car overspeed is occurring, is greater than the pre-set load, for triggering the safety device via the linkage.