Curved Formwork Device With Hinged Arms And Lever System
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Solution Overview
Problem
Existing devices for creating curved formwork either fail to achieve an exact curved shape, require multiple tapered connecting pieces for different radii, and are complex and time-consuming to operate, leading to high costs and potential errors.
Innovation Solution
A device featuring hinged arms with a lever system and a clamping mechanism using threaded rods with opposing screw threads allows for efficient deformation of form boards, enabling precise curvature adjustment without additional adapters and simplifying the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If tapered connecting pieces are used to couple flat form boards, then the form boards can be assembled, but the desired curved shape is not exactly obtained and the assembly is complex
Solution Approach 1:
The patent employs hinged arms that can rotate and adjust their position, transforming the static rigid connection of tapered pieces into a dynamic adjustable system. This allows the formwork to adapt to curved geometries while simplifying assembly through a standardized mechanism that accommodates varying radii without requiring multiple specialized components.
Solution Approach 2:
The invention changes the geometric parameters of the connection system by using adjustable hinged arms with variable angles and positions. Instead of fixed tapered pieces designed for specific radii, the hinged arms can be configured to achieve different curvature radii, thereby improving curved shape accuracy across multiple applications while maintaining device simplicity.
2Adaptability or versatility
If different tapered connecting pieces are used for every different radius of curvature, then various curved shapes can be achieved, but a lot of installation material must be available and it is easy to make mistakes
Solution Approach 1:
The hinged arm mechanism serves multiple functions: it can accommodate various radii of curvature, adjust to different form board positions, and maintain structural integrity. This universal mechanism replaces the need for multiple specialized tapered connecting pieces, each designed for a specific radius, thereby reducing installation material quantity while maintaining adaptability.
Solution Approach 2:
The dynamic nature of the hinged arms allows a single standardized component to adapt to different curvature requirements through angular adjustment, eliminating the need for multiple static connecting pieces with fixed geometries.
3Manufacturing precision
If flat form boards are bent with clamping means, then the desired curved shape can be obtained, but the devices are very complicated and the clamping process is time-consuming
Solution Approach 1:
The hinged arms are pre-configured with optimal geometric relationships and hinge positions that enable rapid curving. The preliminary design of the arm lengths, hinge locations, and connection points allows the form boards to be curved quickly without requiring complex adjustment procedures during installation, thereby improving productivity while maintaining curved shape accuracy.
Solution Approach 2:
The curving mechanism is divided into modular hinged arm units that can be independently adjusted and assembled. This segmentation allows for quick installation and adjustment without requiring complex overall system configuration, thereby speeding up the curving process while maintaining precision.
4Reliability
If multiple manipulations and adjustments are required for clamping, then connecting form panels can fit, but the process is very complicated and requires several manipulations
Solution Approach 1:
The hinged arm mechanism is designed to self-align and self-adjust during assembly. The geometric constraints and hinge configurations automatically guide the arms into the correct positions, eliminating the need for multiple manual manipulation steps and adjustments. This self-service characteristic maintains form panel fitting accuracy while dramatically simplifying the clamping operation.
Solution Approach 2:
The mechanical geometry of the hinged arms provides inherent feedback through physical constraints and contact points. When the arms are assembled, the form boards naturally guide the hinges into their correct positions, providing immediate feedback on proper alignment without requiring additional adjustment operations.
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
The device enables quick and precise formation of curved shapes with varying radii, reducing material needs and operational complexity, allowing for efficient and cost-effective creation of curved concrete forms.
Implementation Method 1
The combination of several hinged arms with a lever hereby provides for a very efficient transmission of energy, whereby only a very slight tightening of the clamping means results in large deformation of the form board
Implementation Method 2
the clamping means consist of a single clamping means, preferably in the form of two threaded rods that are connected by means of a nut, whereby the nut is provided with left-handed internal screw thread on one side and with right-handed internal screw thread on the other side
Data Source
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AI summary
Device (1) for making a curved formwork (25), characterised in that it consists of a central part (2) and of coupling means (5) on either side (6) of the central part (2) with which the device (1) can be coupled to the form board (4), whereby a pair of hinged arms (7,8) is provided on either side (6) of the central part (2) which are hinge-mounted to the central part (2) with one far end (9,10) and which are hinge-mounted to a lever (13) with their other far end (11,12), which lever (13) is hinge-mounted to the coupling means (5) concerned, whereby between the above-mentioned levers (13) or hinged arms (7,8) are provided clamping means (17) to move the hinged arms (7, 8) towards each other or away from each other.