Elevator Door Sill Unit with Rotating Support for Landing Installation
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Solution Overview
Problem
Elevator landing door units are traditionally installed from the elevator shaft, requiring the lifting machinery and car platform to be in place first, which delays the finalization of building entrances and exposes them to dust accumulation.
Innovation Solution
A door sill unit is installed from the landing, allowing the elevator landing door unit to be positioned with a temporary sill that can be later replaced by a permanent sill, enabling installation independent of the elevator shaft's construction status and machinery availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If elevator landing door units are installed from the elevator shaft, then the installation can be performed with traditional equipment, but the lifting machinery and car platform must be installed first, delaying the finalization of building entrances
Solution Approach 1:
The patent inverts the traditional installation approach by installing the door sill unit from the landing side rather than from the elevator shaft. The door sill unit is positioned on the landing with a temporary sill that extends into the shaft, allowing the door unit to be installed from the landing area instead of requiring the shaft to be ready first.
Solution Approach 2:
The installation process is segmented into two phases: first installing the door sill unit with a temporary sill from the landing, then later replacing it with a permanent sill from the shaft when the lifting machinery is in place. This segmentation allows independent installation timing for different components.
2Object-affected harmful factors
If elevator landing door units are installed from the elevator shaft, then the door unit can be properly positioned, but the building entrance cannot be finalized until after installation, exposing it to dust accumulation
Solution Approach 1:
The door sill unit is installed as a preliminary structure from the landing before the elevator shaft construction is completed. This allows the building entrance to be finalized and protected from dust exposure earlier in the construction process, while the permanent sill and shaft-related components are installed later.
3Ease of operation
If a temporary sill is used during installation, then the door unit can be installed from the landing, but the permanent sill must be installed later when the shaft is completed
Solution Approach 1:
A temporary sill serves as an intermediary element during the installation process. It allows the door unit to be positioned and installed from the landing when the permanent sill is not yet in place. The temporary sill is later removed and replaced with the permanent sill, providing a bridge between the two installation stages.
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 earlier installation of elevator landing door units, reducing dust exposure and allowing for final building entrance completion without relying on the elevator shaft's readiness, with the option to install permanent components later when the shaft is completed.
Implementation Method 1
the support member is rotatable around the pivot between a first position and a second position
Data Source
AI summary
The door sill unit includes a bottom support, a support construction extending upwards from the bottom support and a support member being supported by a pivot on the support construction so that the support member can be rotated around the pivot between a first position and a second position.