Self-Driven Formwork Lifting for Crane-Free Overhang Construction
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Solution Overview
Problem
The use of cranes for constructing overhanging concrete structures is expensive, inefficient, and cumbersome, and requires large open spaces, which is not feasible in confined areas like between existing highways or buildings.
Innovation Solution
A self-driven formwork system comprising a formwork supporting structure, a self-driven vehicle, and an extendable and retractable mechanism that allows the formwork system to be raised and lowered without cranes, enabling construction in narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cranes are used for lifting formwork panels and rebar reinforcing cage, then construction can be performed, but construction cost increases and execution time increases
Solution Approach 1:
The formwork machine is equipped with its own lifting system that includes a lifting chain and winch mechanism, allowing the machine to lift formwork panels and rebar reinforcing cage independently without requiring external cranes. This self-service capability eliminates the need for separate crane operations, thereby reducing both construction cost and execution time.
Solution Approach 2:
The patent combines the formwork supporting structure, lifting system, and self-driven vehicle into a single integrated machine. The lifting system is mounted directly on the formwork supporting structure, merging the functions of support and lifting into one unified system, which eliminates the need for separate crane operations and reduces overall construction time.
2Ease of manufacture
If cranes are used for lifting and positioning rebar reinforcing cage, then construction can be performed, but construction cost increases
Solution Approach 1:
The formwork machine incorporates a self-contained lifting system with a lifting chain and winch mechanism that enables it to lift and position rebar reinforcing cage independently. This eliminates the need for external cranes, reducing construction cost while maintaining the feasibility of performing construction tasks.
Solution Approach 2:
The formwork machine is designed with multi-functionality, combining formwork support, lifting, and positioning capabilities into a single device. The lifting system can handle both formwork panels and rebar reinforcing cage, providing universal functionality that replaces the need for separate crane operations and reduces overall construction cost.
3Productivity
If cranes are used for constructing overhanging concrete structures, then construction can be performed, but large free space is required
Solution Approach 1:
The formwork machine is divided into modular components including the formwork supporting structure, lifting system, and self-driven vehicle. This segmentation allows the machine to be compact and adaptable to confined spaces, eliminating the need for large free space requirements associated with conventional cranes while maintaining construction capability.
Solution Approach 2:
The lifting system operates in a vertical dimension using a lifting chain and winch mechanism mounted on the formwork supporting structure. This vertical lifting approach eliminates the need for horizontal crane arm movement, allowing construction in confined spaces where cranes cannot operate freely due to nearby buildings or highways.
4Productivity
If cranes are used for lifting formwork panels, then construction can be performed, but the task becomes cumbersome and requires highly trained operators
Solution Approach 1:
The formwork machine's lifting system is designed to operate autonomously without requiring highly trained crane operators. The lifting chain and winch mechanism are integrated into the machine's structure, allowing it to lift formwork panels independently. This reduces operational complexity and eliminates the need for specialized crane operator training while maintaining construction efficiency.
Solution Approach 2:
The patent replaces the complex mechanical crane system with a simpler lifting mechanism consisting of a lifting chain and winch. This substitution reduces the operational complexity and eliminates the need for highly trained operators, making the construction process more accessible while maintaining productivity.
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
Reduces construction costs and time, minimizes manpower, and reduces accident risks by allowing construction in confined areas without the need for cranes, while maintaining operational efficiency.
Implementation Method 1
The extendable and retractable mechanism is configured for raising and lowering the formwork supporting structure with respect to the ground, when the self-driven vehicle rest on the ground
Data Source
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AI summary
The present disclosure refers to a system and a method for concrete forming using a self-driven formwork machine. The self-driven machine is provided with a lifting system, for lifting objects from the ground like a rebar reinforcing cage. The present disclosure avoids the use of cranes, such that construction cost and execution time, are greatly reduced. The present disclosure is preferably used for constructing a capital or lintel on top of a pillar, although it can also be used for constructing other overhanging concrete structures.