Elevator Cabin Floor With Height-Adjustable Mounting Feet
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Solution Overview
Problem
Elevator car floors often face challenges in being levelled due to uneven shaft floors, requiring a simple and efficient method for horizontal alignment during assembly.
Innovation Solution
A car floor with height-adjustable mounting feet that can be manually or mechanically operated to adjust the base part's position, ensuring the cabin floor is horizontal, featuring a flat base part with mounting foot receptacles and threaded spindles for precise height adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the car floor is installed on an uneven shaft floor, then the assembly process can proceed, but the car floor cannot be leveled properly
Solution Approach 1:
The mounting feet are designed with height-adjustable threaded spindles that allow dynamic adjustment of the car floor's vertical position at different locations. This enables the floor to be leveled by rotating the spindles to extend or retract the mounting feet, transforming a static installation into a dynamically adjustable one that adapts to uneven shaft floors.
2Adaptability or versatility
If mounting feet with height adjustment are added to the car floor, then leveling capability is improved, but device complexity increases
Solution Approach 1:
The car floor is segmented into a base part and separate mounting feet, with each mounting foot containing its own threaded spindle mechanism. This segmentation allows the leveling function to be distributed across multiple independent adjustable points rather than requiring a complex centralized adjustment system, making the overall structure more manageable despite the added functionality.
Solution Approach 2:
The mounting feet are designed to be manually adjustable using simple rotational motion on the threaded spindles, eliminating the need for external leveling equipment or complex mechanical assistance. The system serves itself by using the installer's direct manual operation to achieve leveling, reducing the need for additional complex mechanisms.
3Manufacturing precision
If manual adjustment of mounting feet is required, then precision leveling is achieved, but installation time increases
Solution Approach 1:
The complex mechanical leveling systems found in prior art (requiring 180° rotations, bushing adjustments, and multiple components) are replaced with simple threaded spindle mechanisms. These spindles convert straightforward rotational motion into precise vertical adjustment, reducing the number of steps and operations required compared to the previous mechanical systems while maintaining high precision.
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
Enables easy and precise levelling of the cabin floor, allowing for seamless assembly of elevator cars by compensating for uneven shaft floors, ensuring stability and facilitating the attachment of side walls and ceiling.
Implementation Method 1
The mounting foot can be designed to be height-adjustable via a threaded spindle (11). The threaded rod (11) is received in an internal thread (13) assigned to the base part (4) and corresponding to the threaded rod (11) to form the threaded spindle (11)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A floor (3) for a lift car (2) comprises a planar base part (4) and installation feet (5) arranged thereon. The installation feet (5) provide support for the lift-car floor (3) on the floor (7) of a lift shaft (6) during the installation phase. In order to orient the base part (4) in a horizontal position, each of the installation feet (5) is designed in the form of a height-adjustable installation foot. The height-adjustable installation foot (5) here has a threaded rod (11) for forming a threaded spindle (10) for height adjustment.