Composite Steel Structure for Elevator Systems with Levelling Mechanism
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Solution Overview
Problem
Existing self-supporting steel structures for elevator systems face challenges such as complex and costly manufacturing, reduced stability, aesthetic issues with transparent cladding, and inefficient use of space due to reliance on open sections and screw connections, which complicate installation and maintenance, especially in confined areas.
Innovation Solution
A composite steel structure using identical, series-produced closed sections for pillars and cross-beams with secure Allen head screw connections and safety washers, eliminating the need for two tools during assembly, and a levelling system that anchors into concrete recesses, ensuring stability and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welded structures are used, then load-bearing capacity and design simplicity are improved, but manufacturing complexity and installation time increase due to on-site welding and grinding operations
Solution Approach 1:
The structure is divided into modular components (pillars, cross-beams, cladding panels) that are pre-manufactured off-site and assembled on-site through bolting connections, eliminating the need for on-site welding operations while maintaining structural integrity
Solution Approach 2:
All welding, grinding, and surface preparation operations are performed in advance during off-site manufacturing of modular components, so that on-site assembly requires only simple bolting operations without hot work processes
2Ease of manufacture
If welded structures are used, then design simplicity is improved, but installation time increases due to prolonged on-site manufacturing operations
Solution Approach 1:
The structure is segmented into pre-assembled modular units that can be manufactured independently and then quickly assembled on-site, dramatically reducing installation time while preserving design simplicity through standardized connection details
Solution Approach 2:
All complex manufacturing operations including welding and surface preparation are completed beforehand during off-site fabrication of modular components, allowing on-site assembly to proceed rapidly with minimal operations
3Ease of operation
If open sections are used in assembled structures, then ease of assembly is improved, but stability and aesthetic value deteriorate
Solution Approach 1:
The structure combines closed steel sections for load-bearing elements with appropriate bracing systems to achieve both ease of assembly through modular construction and high structural stability, while closed sections also provide aesthetic coverage for connections
4Ease of operation
If loose nut and screw connections are used, then ease of assembly is improved, but device complexity increases due to requirement of two tools on each side
Solution Approach 1:
The connecting elements are designed as integrated units where the nut is permanently attached to one component, allowing the connection to be made with a single tool from one side only, simplifying both the assembly process and the connection detail itself
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
This solution simplifies and reduces the cost of manufacturing and installation, enhances stability, improves aesthetics, and maximizes space utilization within confined areas, while maintaining the load-bearing capacity and design simplicity of welded structures without additional stabilization or complex on-site operations.
Implementation Method 1
The structure levelling system comprising an adjusting screw (14), adjusting load-bearing nut (12), and safety nut (13), where the adjusting screw (14) passes through the opening in the lifting plate (10) welded onto the lower part of the lowermost pillar (1) of the structure
Implementation Method 2
inner connecting pieces (18) with fixed nuts (21), attached by Allen head screws (20) with safety washers having high resistance to spontaneous releasing due to vibrations
Implementation Method 3
fixed nuts (21), attached by Allen head screws (20) with safety washers
Implementation Method 4
lifting plates (11) that are anchored into a concrete recess using chemical bonds via openings (15)
Implementation Method 5
corner reinforcements (6) ensuring the stability and perpendicularity of the connection (4) of the pillars (1) and cross-beams (2)
Data Source
AI summary
The composite assembly of the steel structure for lifting equipment comprised of the lifting system, into which the lower parts of vertically connected pillars connected to one another by cross-beams are fixed, with a levelling lifting system comprised of lifting plates (11) that are anchored into a concrete recess using chemical bonds via openings (15), with the structure levelling system comprising an adjusting screw (14), adjusting load-bearing nut (12), and safety nut (13), where the adjusting screw (14) passes through the opening in the lifting plate (10) welded onto the lower part of the lowermost pillar (1) of the structure. The vertical connections (3) of individual pillars (1), on the inner sides of both ends fitted with sets of openings mutually arranged at the angle of 90 degrees, are realized by inner connecting pieces (18) with fixed nuts (21), attached by Allen head screws (20) with safety washers having high resistance to spontaneous releasing due to vibrations via a set of openings. Connection of the cross-beam (2) and pillar (1), fitted with fixed integrated nuts (17), screw connections (4) is realized in the front part of the cross-beam (2) closed by the plate (4b) via oval openings (4a) on the inner side of the structure by Allen head screws (4c), supported by safety washers (4d) with high resistance to spontaneous releasing due to vibrations. The connections (4) are also fitted with mechanical protection by safety plates (7), attached by Allen head screws (22) to the fixed nuts (19) attached into the inside of the section on the side of the cross-beams (2), with corner reinforcements (6) ensuring the stability and perpendicularity of the connection (4) of the pillars (1) and cross-beams (2), further comprising a system for seating the brackets of the guide rails consisting of an oval opening (8) and a T-bolt (16), having a rectangular block (16b) in the rear part and a square block (16a) on the top of it for fixing and levelling the attached elements of the elevator.