Elevator Guide Device With Friction Damping for Uneven Rails
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Solution Overview
Problem
Elevator guide rails in hoistways can become uneven over time, causing horizontal vibrations in elevator cars, which existing hydraulic damping devices may not adequately address.
Innovation Solution
A guide device for elevator systems featuring a bracket with rollers mounted through a damping device, comprising an oscillating rod, a guide pin, and friction members that provide damping through frictional contact, allowing for adjustable damping parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hydraulic damping devices are used to reduce vibrations, then vibration reduction effectiveness is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex hydraulic damping devices with a simplified mechanical damping structure consisting of a friction member, spring member, and oscillating rod. This mechanical substitution maintains vibration reduction effectiveness while significantly reducing device complexity and cost by eliminating hydraulic systems.
Solution Approach 2:
The invention uses simple, inexpensive mechanical components (friction members, spring members, oscillating rods) that can be easily manufactured and replaced if needed. These components provide effective damping at a fraction of the cost of hydraulic systems, making the overall device more cost-effective.
2Device complexity
If fixed damping parameters are used, then device simplicity is improved, but adaptability to different vibration conditions deteriorates
Solution Approach 1:
The patent implements dynamic damping parameters through the oscillating rod mechanism that can rotate to adjust the contact position between friction members and the guide pin. This allows the damping characteristics to be dynamically adjusted based on actual vibration conditions, improving adaptability while maintaining relatively simple device structure.
Solution Approach 2:
The invention enables parameter adjustment by changing the contact position between friction members and guide pin through oscillating rod rotation. Different contact positions create different friction moments, allowing damping parameters to be adjusted to match various vibration scenarios without significantly complicating the device structure.
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 guide device effectively reduces elevator car vibrations by providing a damping mechanism that adjusts to the specific needs of the system, offering a cost-effective alternative to hydraulic systems.
Implementation Method 1
one or more friction members, mounted onto the oscillating rod and in frictional contact with the guide pin during the oscillation of the oscillating rod
Implementation Method 2
a spring member between the friction member body and the friction end
Data Source
AI summary
An elevator system and a guiding device for use in an elevator system. The guide device for an elevator system includes: a bracket; a plurality of rollers mounted onto the bracket; at least one of the plurality of rollers is mounted onto the bracket through a damping device, the damping device includes: an oscillating rod, a first end of the oscillating rod is rotatably mounted onto the bracket, a second end of the oscillating rod is provided with a first notch, and the roller is mounted onto the oscillating rod; a guide pin, wherein the guide pin is mounted onto the bracket and passes through the first notch of the oscillating rod; and one or more friction members, mounted onto the oscillating rod and in frictional contact with the guide pin during the oscillation of the oscillating rod.