Double-Deck Elevator Car Linear Guide Adjustment
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Solution Overview
Problem
Designing double-deck elevators that are lightweight, space-saving, and cost-efficient while maintaining the necessary rigidity to adjust car distance between unequal floor levels, minimizing horizontal forces on drive shafts, and reducing energy consumption.
Innovation Solution
The use of a compact linear guide system with a coupling element and drive means that includes a rail element and coupling elements mounted on the elevator car frame, allowing for vertical adjustment of the car distance using a sliding guide and drive units like threaded spindles, integrated into the elevator car frame for reduced space and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If screw spindle drives or scissor-like connecting links are used to interconnect the two cars, then the distance between the cars can be adjusted to floor distance, but the guide and drive means become heavy and space-consuming
Solution Approach 1:
The coupling element is divided into multiple mounting portions (first mounting portion above the support structure, second mounting portion below the support structure), allowing the linear guide means to be distributed across different locations. This segmentation enables the use of lighter individual components while maintaining overall structural integrity and adjustability.
Solution Approach 2:
The linear guide means is arranged to extend in the longitudinal direction of the elevator car frame, utilizing the longitudinal dimension rather than requiring horizontal space. This dimensional reorganization allows for compact vertical arrangement of the guide and drive means, reducing the horizontal footprint and overall space requirements.
2Adaptability or versatility
If screw spindle drives or scissor-like connecting links are used to interconnect the two cars, then the distance between the cars can be adjusted to floor distance, but the guide and drive means consume more space
Solution Approach 1:
The linear guide means extends in the longitudinal direction of the elevator car frame, utilizing the longitudinal dimension for the guide path. This dimensional reorganization allows for compact vertical arrangement of the guide and drive means, reducing the horizontal footprint and overall space requirements while maintaining full adjustability functionality.
Solution Approach 2:
The coupling element with its multiple mounting portions allows the linear guide means to be nested within or alongside the elevator car frame structure. This nesting approach integrates the guide and drive means into the existing structural framework, minimizing additional space requirements.
3Adaptability or versatility
If conventional guide and drive means are used, then the cars can be interconnected, but the components are not cost-efficient
Solution Approach 1:
The coupling element serves multiple functions: it provides structural connection between the support structure and linear guide means, offers multiple mounting portions for flexible attachment, and enables both guidance and drive functions. This multi-functionality reduces the need for separate specialized components, lowering manufacturing costs while maintaining adjustability.
4Volume of moving object
If the linear guide means is arranged to extend in the longitudinal direction, then space requirements are reduced, but the mounting complexity increases
Solution Approach 1:
The coupling element is segmented into multiple mounting portions (first mounting portion above, second mounting portion below the support structure), allowing the linear guide means to be assembled in sections along the longitudinal direction. This segmentation simplifies mounting by breaking down the installation into manageable segments while maintaining the compact longitudinal arrangement.
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
This solution enables efficient adjustment of car distance between floors with reduced space requirements, minimized friction losses, and protection of the drive system, ensuring reliable operation and energy efficiency.
Implementation Method 1
at least one coupling element which, on the one hand, is slidably mounted on the rail element
Implementation Method 2
drive means which is designed to move at least the first support structure relative to the second support structure
Data Source
AI summary
A double-deck elevator car has first and second vertically spaced cars each accessible via a different floor in a stop position, a car frame with at least one longitudinal support, a first support structure in the frame supporting the first car, a second support structure in the frame supporting the second car, and a linear guide movably coupling the first support structure to the longitudinal support. The linear guide has at least one rail element fastened to the longitudinal support, and at least one coupling element slidably mounted on the rail element and fastened to the first support structure. The coupling element has first and second mounting portions mounting on the rail element and a fastening portion fastening the coupling element to the first support structure. A drive moves the first support structure relative to the second support structure.