Modular Elevator Shaft Assembly Without Top-Crane Hoisting
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Solution Overview
Problem
Traditional elevator construction methods are time-consuming and complicate construction logistics, requiring significant on-site adjustments and often bottlenecking the construction process, especially when a top crane is unavailable or reserved for other purposes.
Innovation Solution
A method involving preassembled elevator modules that are installed in a shaft one above the other, using a hoist arrangement to move and attach modules from the bottom up, allowing for faster installation and reduced on-site work, especially when a top crane is not available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional construction methods are used to build elevators vertically inside a building, then the elevator can be installed floor by floor, but the construction time is excessively long (about a week per floor) and the construction logistics are complicated
Solution Approach 1:
The elevator system is divided into multiple pre-assembled modules (elevator car module, machine room module, shaft module, etc.) that can be manufactured separately and then quickly assembled on-site. This segmentation enables parallel production and significantly reduces installation time from weeks to days.
Solution Approach 2:
Elevator modules are pre-assembled and pre-tested in controlled factory environments before delivery to the construction site. This preliminary action ensures quality control and allows on-site installation to proceed rapidly without extensive assembly work, reducing construction time while maintaining productivity.
2Adaptability or versatility
If traditional construction methods are used, then the elevator can be built on-site, but the elevator manufacturers become the bottleneck in the construction process, slowing down the total throughput time
Solution Approach 1:
By segmenting the elevator into independent modules that can be produced by different manufacturers simultaneously, the construction process is no longer bottlenecked by a single elevator manufacturer. Multiple modules can be manufactured in parallel by specialized manufacturers, then assembled on-site, improving total throughput time while maintaining flexibility.
Solution Approach 2:
The modular design creates universal interfaces and standardized connections that allow different manufacturers to produce compatible modules. This multi-functionality enables various specialized manufacturers to contribute different modules, eliminating the single-point bottleneck while maintaining construction flexibility through standardized assembly protocols.
3Ease of operation
If modular elevator solutions are hoisted to the building module by module from the top using a top crane, then the installation can proceed, but the solution is not viable when the construction site top crane cannot be used or is reserved for other purposes
Solution Approach 1:
Instead of hoisting modules from the top down using a crane, the invention inverts the approach by installing modules from the bottom up using hoist arrangements within the shaft. This inversion eliminates the dependency on top crane availability, allowing installation to proceed even when cranes are unavailable or occupied with other construction activities.
Solution Approach 2:
The invention introduces intermediate hoist arrangements installed within the shaft itself as mediators to transfer modules vertically. These hoist arrangements serve as alternative lifting mechanisms that replace the need for top cranes, enabling module installation from the bottom up and providing flexibility when crane resources are constrained.
4Adaptability or versatility
If traditional construction methods are used with extensive on-site assembly and adjustment, then the elevator can be customized to the site, but accurate positioning of components requires lots of adjustment at the site, consuming time and complicating logistics
Solution Approach 1:
Modules are pre-assembled and pre-positioned with high precision in controlled factory environments using specialized equipment. This preliminary action ensures accurate component positioning is achieved during manufacturing rather than requiring time-consuming on-site adjustments, while standardized interfaces maintain adaptability for site-specific requirements.
Solution Approach 2:
The invention employs adjustable connection systems and modular interfaces that allow for parameter adjustments (positioning, alignment, spacing) after module installation. This enables on-site customization to accommodate specific site conditions while the core modules maintain their factory-preachised precision, resolving the contradiction between precision and adaptability.
Data Source
AI summary
A method for constructing an elevator arrangement and an elevator arrangement. A plurality of preassembled elevator modules are installed in a shaft one above the other to form an elevator module stack, the preassembled elevator modules comprise a top module. A hoist arrangement is provided in the shaft upper area during installation, the hoist arrangement is configured to hoist said preassembled elevator modules; the top module is hoisted inside the shaft by the hoist arrangement; each of the remaining preassembled elevator modules is moved inside the shaft, below a combination of the top module and preassembled elevator modules attached to it from below, said combination of the top module and preassembled elevator modules attached to each other forming the elevator module stack; and each of the remaining preassembled elevator modules is attached to said elevator module stack from below.