Elevator Car Support Frame Layout for Reduced Structural Weight
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional elevator car designs face an issue with increased weight due to the large height dimension of the support frame, which is exacerbated by the arrangement of the door rail, first pulley, and drive motor on the front face, leading to a heavier structure.
Innovation Solution
The elevator car design incorporates a support frame with brackets that attach to the rear face, positioning the first pulley and drive motor lower, and arranges components in an open space between offset planes, reducing the overall height and weight of the support frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the door rail, first pulley, and drive motor are arranged on the front face of the support frame, then the components are easily accessible and installed, but the height dimension of the support frame increases, resulting in increased weight
Solution Approach 1:
The patent relocates components from the front face (2D plane) to the upper edge (different spatial dimension), specifically positioning the first pulley and drive motor above the door rail rather than on the front face. This dimensional shift reduces the height dimension of the support frame while maintaining component functionality and accessibility.
2Weight of stationary object
If the support frame height is reduced to decrease weight, then the overall weight is reduced, but there may be insufficient space to accommodate all components
Solution Approach 1:
The patent utilizes the vertical space above the door rail by positioning the first pulley and drive motor in this upper region. This effectively uses the third dimension (height above door rail) to accommodate components, thereby reducing the overall support frame height without compromising component placement space.
Solution Approach 2:
The patent nests the first pulley and drive motor within the space defined by the upper edge of the support frame and the door rail. By positioning these components in the vertical space above the door rail rather than extending the front face height, the structure achieves compact nesting that reduces overall height while maintaining all necessary component volumes.
Data Source
AI summary
Provided are a car of an elevator, and an elevator that achieve weight reduction for a support frame. The support frame includes brackets at multiple locations on an upper edge, and supports a first pulley, a second pulley, and a door position detection part via the brackets. This eliminates the need to secure an area on a front face of the support frame for arranging the first pulley, the second pulley, and the door position detection part. Therefore, the height dimension of the support frame can be reduced to achieve weight reduction for the support frame.