Guide Rail Fixing Device Friction Plate Mechanism
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Solution Overview
Problem
Conventional guide rail fixing devices often fail to produce sufficient frictional force between the guide rail and the fixing device, leading to potential guide rail displacement during earthquakes or strong winds, and increasing the number of fixing devices to enhance friction raises installation costs by requiring more beams or wall-side brackets.
Innovation Solution
A guide rail fixing device incorporating a rail bracket, first and second rail clips, and a friction plate that increases frictional force without additional brackets, using the same parts for assembly and adjusting friction coefficient to prevent guide rail fall without increasing installation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more guide rail fixing devices are installed to increase the number of spots for fixing the guide rails, then the frictional force between the guide rail and the guide rail fixing devices can be increased, but the number of beams or wall-side brackets to be installed on the hoistway inner-wall increases, resulting in increased building installation cost
Solution Approach 1:
The invention changes the friction coefficient parameter by introducing a friction plate with a high-friction surface between the guide rail and the fixing device. This allows sufficient frictional force to be generated without increasing the number of fixing devices, thereby maintaining reliability while controlling installation cost.
2Reliability
If conventional guide rail fixing devices are used, then the structure is simple and installation cost is controlled, but enough frictional force is not produced between the guide rail and the guide rail fixing device, causing the guide rail to fall when the building is widely swung by earthquake or strong wind
Solution Approach 1:
The invention introduces a friction plate as an intermediary component between the guide rail and the fixing device. This friction plate serves as a mediator that generates sufficient frictional force through its high-friction surface, preventing guide rail displacement without significantly complicating the overall structure.
3Force
If the number of beams or wall-side brackets is increased to provide more fixing spots, then the frictional force can be increased, but the installation cost increases
Solution Approach 1:
Instead of increasing the quantity of brackets, the invention changes the friction coefficient parameter by introducing a friction plate with a high-friction surface. This allows sufficient frictional force to be generated with the same number of brackets, thereby maintaining force requirements while controlling the quantity of components.
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 effectively enhances frictional force between the guide rail and the fixing device without increasing the number of installed brackets, thus preventing guide rail displacement and maintaining cost-effectiveness.
Implementation Method 1
a friction plate which is in contact with the bottom face of the base of the guide rail placed in the lowest portion and in contact with an upper end of the rail bracket, the friction plate to clamp, in cooperation with a second rail clip, the base of the guide rail placed in the lowest portion
Data Source
AI summary
A guide rail fixing device that can increase frictional force against a guide rail without increasing the number of brackets installed on an inner wall of a hoistway. The guide rail fixing device includes: a rail bracket in contact with a bottom face of a base of a guide rail placed in the lowest portion out of multiple guide rails arranged in line in an elevator hoistway; a rail clip to clamp the base of the guide rail in cooperation with the rail bracket; and a friction plate which is in contact both with the bottom face of the base of the guide rail placed in the lowest portion and in contact with an upper end of the rail bracket, to clamp, in cooperation with a rail clip, the base of the guide rail placed in the lowest portion.