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 spaces, which is not feasible in confined areas like between existing highways or buildings.
Innovation Solution
A self-driven formwork machine with an extendable and retractable mechanism and a lifting system, including davits operated by hydraulic cylinders, allows for the construction of overhanging concrete structures without cranes, enabling autonomous operation in narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cranes are used for lifting formwork panels and rebar, then construction capability is achieved, but construction cost and execution time increase significantly
Solution Approach 1:
The patent combines the lifting function with the formwork machine by integrating a lifting device directly onto the formwork support structure. This merging eliminates the need for separate crane equipment, reducing construction cost and simplifying the overall system while maintaining the ability to lift formwork panels and rebar reinforcing cages.
Solution Approach 2:
The formwork machine is designed with multi-functionality, serving both as a support structure for formwork panels and as a lifting device. The lifting device can handle multiple tasks including lifting formwork panels, supports, and rebar reinforcing cages, replacing the need for specialized crane operations.
2Ease of operation
If cranes are used for constructing overhanging concrete structures, then lifting capability is achieved, but space requirements increase excessively
Solution Approach 1:
By integrating the lifting device directly onto the formwork support structure, the system eliminates the need for external crane equipment that requires large operational spaces. The combined system can operate in confined areas such as between existing highways or buildings where conventional cranes cannot access.
Solution Approach 2:
The formwork machine performs its own lifting operations through the integrated lifting device, eliminating the need for external crane assistance. This self-service capability allows the system to operate autonomously in confined spaces without requiring the large free space needed for crane installation and operation.
3Productivity
If manual assembly of formwork is performed, then flexibility is achieved, but manpower requirements and safety risks increase
Solution Approach 1:
The formwork machine with integrated lifting device performs assembly operations autonomously, reducing the need for manual handling by workers. The lifting device mechanically assembles formwork panels and supports, and positions rebar reinforcing cages, thereby reducing manpower requirements and associated safety risks while improving construction efficiency.
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 eliminates the risk of accidents by allowing formwork work to be performed in confined areas without invading surrounding spaces.
Implementation Method 1
The lifting system comprises a davit operated by a hydraulic cylinder
Data Source
AI summary
A system and a method for concrete forming uses 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 invention avoids the use of cranes, such that construction cost and execution time, are greatly reduced. The present invention 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.