Integrated T-Shaped Elevator Guide Rail for Space-Saving Rigidity
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Solution Overview
Problem
Existing guide rails for elevator cars and counterweights are complex to construct, require additional space for safety devices, and face increased strength requirements, leading to manufacturing challenges.
Innovation Solution
A T-shaped guide rail design with integrally formed guiding portions for the elevator car and counterweight, incorporating safety devices directly, which is manufactured from a single metal sheet and optimized for rigidity and space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional guide rails are used to guide elevator car and counterweight, then the guide rail can support safety devices, but the structure becomes complex and requires additional installation space
Solution Approach 1:
The patent merges the guide rail structure with safety device components by integrating the guide rail profile itself to serve as the safety device mounting structure. The T-shaped cross-section with specifically designed flanges and web allows safety devices to be directly attached to the guide rail body, eliminating the need for separate mounting brackets or additional structural elements.
Solution Approach 2:
The guide rail is designed to perform multiple functions simultaneously: it provides guidance for the elevator car and counterweight, supports safety devices, and maintains structural rigidity. The integrated design allows the same component (the guide rail) to fulfill both guidance and safety device support functions, reducing overall system complexity.
2Reliability
If conventional guide rails are used to guide elevator car and counterweight, then the guide rail can support safety devices, but installation space is increased
Solution Approach 1:
The safety device components are merged with the guide rail structure itself. The guide rail's T-shaped profile with integrated flanges and web allows safety devices to be mounted directly on the guide rail body, utilizing the existing structural space rather than requiring additional external mounting space.
3Strength
If guide rail strength is increased to meet safety requirements, then the guide rail can support higher loads, but manufacturing complexity increases
Solution Approach 1:
The patent optimizes the guide rail's geometric parameters, specifically the T-shaped cross-section dimensions and the integrated flange-web configuration, to achieve the required bending resistance. By carefully selecting the thickness and dimensions of the flanges and web, the guide rail attains the necessary strength characteristics through its geometry rather than requiring complex reinforcement structures.
4Ease of manufacture
If the guide rail structure is simplified for easier manufacturing, then manufacturing cost decreases, but rigidity against bending moments is reduced
Solution Approach 1:
The T-shaped cross-section with optimized flange and web dimensions provides the necessary bending resistance through geometric optimization. The integrated design maintains structural efficiency while using simple, manufacturable forms that can be produced through standard fabrication processes.
Solution Approach 2:
The guide rail utilizes a composite structure formed by integrating multiple functional elements (flanges, web, guiding surfaces) into a single T-shaped profile. This composite design achieves high bending resistance by strategically placing material where it is most needed for structural efficiency, while maintaining manufacturing simplicity.
Data Source
AI summary
A guide rail (1) for guiding an elevator car (2) and a counterweight (3) during their up and down movements. The guide rail (1) includes a first guiding portion (4) for guiding the elevator car (2) and a second guiding portion (5) being integrally formed with the first guiding portion (4) for guiding the counterweight (3). Each guiding portion (4, 5) further forms a base section (6, 7) configured for being connected directly or indirectly to a part of a building (8) and a rail section (9, 10) protruding from the base section (6, 7). Each guiding portion (4, 5) is T-shaped in cross-section.