Elevator Shaft Module Door Sill Mounting for Prefabricated Assembly
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Solution Overview
Problem
Existing methods for constructing and installing elevator shafts do not adequately address the need for efficient preparatory work and simple installation of elevator systems using prefabricated modules, particularly in scenarios where the door threshold cannot be fixed to a horizontal section.
Innovation Solution
A shaft module design with a door threshold fixed to a side wall using a final threshold bracket, allowing permanent fixation during manufacturing, and adjustable brackets for alignment after installation, enabling easy assembly and alignment of elevator shaft components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the threshold is fixed to the first side wall during manufacturing, then the threshold can be permanently fixed in the shaft module, but the first side wall must have a horizontal section below the door opening which is not always available
Solution Approach 1:
The patent changes the fixation dimension from horizontal (fixing to the first side wall below the door opening) to vertical/diagonal (fixing to the second side wall above the door opening). This dimensional shift allows the threshold to be fixed in both configurations, resolving the contradiction between ease of manufacture and adaptability to different side wall geometries.
2Productivity
If temporary door brackets are used during transport, then the shaft module can be assembled in factory, but the brackets must be replaced after installation which increases installation complexity
Solution Approach 1:
The patent applies preliminary action by pre-assembling the shaft door with the threshold permanently fixed to the second side wall during factory manufacturing. This eliminates the need for bracket replacement after installation, as the permanent fixation is already in place, thus reducing installation complexity while maintaining prefabrication efficiency.
3Ease of operation
If the shaft module is designed with fixed threshold configuration, then installation is simplified, but the design cannot accommodate all door opening orientations
Solution Approach 1:
The patent achieves universality by designing the threshold fixation system to work with multiple door opening orientations (downward, upward, sideways) by fixing the threshold to the second side wall which is universally positioned relative to the door opening. This single fixation location accommodates various door configurations, making the design universally applicable while maintaining installation simplicity.
Data Source
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AI summary
The invention relates to a hoistway module for forming a hoistway of a lift installation. The hoistway module (16) has a first side wall (34) having a door opening (36), a second side wall (38) adjoining the first side wall (34) at an angle which is not 180°, and a hoistway door (42) which has a door sill (64) and is arranged in the door opening (36). According to the invention, the door sill (64) of the hoistway door (42) is fixed to the second side wall (38) by means of a final door-sill mount (46).