Elevator Car Door Mounting Rail Integration
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Solution Overview
Problem
Conventional elevator cars face increased weight and cost burdens due to the separation of the door apparatus from the car frame, requiring larger mounting arms and more complex adjustment mechanisms with multiple jack bolts, making installation time-consuming.
Innovation Solution
The elevator car design incorporates a supporting rail fixed to the cage main body with a displaceable fixing apparatus that secures the door apparatus, eliminating the need for jack bolts and reducing the number of parts, allowing for direct adjustment and installation simplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the door apparatus is separated from the car frame and mounted via a mounting arm, then the door apparatus can be installed, but the burden on the mounting arm increases necessitating enlargement and increasing overall car weight
Solution Approach 1:
The patent merges the door apparatus mounting function directly into the cage structure by integrating the supporting rail with the cage main body. This eliminates the separate mounting arm component, thereby reducing overall weight while maintaining the ability to install and adjust the door apparatus. The supporting rail serves dual purposes as both a structural element of the cage and a mounting mechanism for the door apparatus.
2Adaptability or versatility
If multiple jack bolts are disposed on the door apparatus for position adjustment, then the door apparatus position can be adjusted, but the number of parts increases and installation work becomes time-consuming
Solution Approach 1:
The patent extracts the position adjustment function from the door apparatus itself and relocates it to the supporting rail through the displaceable fixing apparatus. This separation allows the door apparatus to have fewer parts while maintaining adjustability. The fixing apparatus can be displaced along the supporting rail to adjust the door apparatus position, eliminating the need for multiple jack bolts on the door apparatus.
3Adaptability or versatility
If multiple jack bolts are disposed on the door apparatus for position adjustment, then the door apparatus position can be adjusted, but installation work becomes time-consuming
Solution Approach 1:
The patent implements preliminary action by pre-positioning the fixing apparatus on the supporting rail at various discrete positions. This allows the door apparatus to be quickly installed and adjusted by simply selecting and engaging the appropriate pre-positioned fixing apparatus location, rather than requiring time-consuming manual adjustment with multiple jack bolts during the installation process.
4Ease of manufacture
If the door apparatus is mounted onto a car frame that is further away from the door apparatus, then the mounting structure can be established, but position accuracy in depth and height directions deteriorates
Solution Approach 1:
The patent introduces the supporting rail as an intermediary element between the cage main body and the door apparatus. This supporting rail is fixed directly to the cage main body and provides a stable, precise mounting interface for the door apparatus. The displaceable fixing apparatus on the supporting rail further enhances positioning accuracy by allowing fine adjustments while maintaining a rigid connection, thereby improving both depth and height direction accuracy compared to mounting from a distant car frame.
Data Source
AI summary
An elevator cage includes: a cage main body on which a car doorway is disposed; a supporting rail that is fixed to the cage main body; and a fixing apparatus that is disposed displaceably on the supporting rail. The supporting rail is disposed above a car doorway so as to be parallel to a direction of frontage of the car doorway. The fixing apparatus is configured so as to fix to the supporting rail a door apparatus that opens and closes the car doorway.