Elevator Car Alignment System Using Tapered Guide Members
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Solution Overview
Problem
In ropeless elevator systems, improper alignment of elevator cars with rails during installation can lead to reduced operating efficiency and increased wear on drive components, particularly in high-rise buildings where multiple cars travel in a single lane and require horizontal transfer between lanes.
Innovation Solution
An alignment system comprising guide members and rollers that guide the elevator car onto rails, ensuring precise alignment by transitioning along tapered or curvilinear surfaces at transfer stations, aligning both the elevator car and the linear motor components for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual alignment methods are used during elevator car installation, then installation process is simple, but alignment precision between elevator car and rails deteriorates
Solution Approach 1:
The patent introduces guide members as intermediary elements between the elevator car and rails. These guide members feature tapered surfaces that actively guide the elevator car into proper alignment with the rails during installation, transforming a precision alignment problem into a self-guiding mechanical process
Solution Approach 2:
The guide members incorporate curved or tapered surfaces that provide a gradual transition zone. This curvature allows the elevator car to be guided smoothly into the correct alignment position, converting a precise positioning requirement into a geometric guidance mechanism
2Productivity
If improper alignment occurs between elevator car and rails, then installation is easier, but operating efficiency deteriorates and wear increases
Solution Approach 1:
The alignment system performs alignment actions during the installation phase rather than during operation. The guide members are pre-installed on the rails to provide alignment guidance before the elevator car enters service, preventing misalignment issues before they affect operating efficiency
Solution Approach 2:
The tapered guide members provide a cushioning transition zone that gradually guides the elevator car into proper alignment. This prevents sudden impacts or forced misalignment that could cause immediate wear or operational problems
3Manufacturing precision
If guide members with tapered surfaces are used, then alignment precision improves, but manufacturing complexity of guide members increases
Solution Approach 1:
The guide members utilize tapered surfaces with specific geometric parameters that can be manufactured using standard machining processes. By optimizing the taper angle and surface geometry, the patent achieves high alignment precision while maintaining manufacturability through conventional manufacturing methods
Data Source
AI summary
An elevator system includes a lane and at least one rail extending along the lane. The at least one rail includes a first end portion and a second end portion. A transfer station is arranged at one of the first end portion and the second end portion, and an alignment system is arranged at the transfer station. The alignment system includes at least one guide member configured and disposed to establish a desired alignment between an elevator car and the at least one rail.