One-Sided Formwork Panel Positioning With Watertight Spacers
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Solution Overview
Problem
Existing formwork systems for concrete walls require access from both sides, necessitating auxiliary structures and increasing construction time and cost, while lacking a secure and simple watertight connection.
Innovation Solution
A device comprising a threaded bar, blind nut, spacers with elastic material lips, and a tightening nut system that allows formwork panel positioning from one side, ensuring secure and watertight connections using PVC and elastomeric polymer components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional formwork systems are used requiring access from both sides of the wall, then secure connection and stability are achieved, but construction time increases and auxiliary structures are needed
Solution Approach 1:
The invention inverts the traditional formwork connection approach by enabling one-sided access. Instead of requiring workers to access both sides of the wall to secure formwork panels, the system uses a threaded bar that passes through the panel and is secured with a nut and washer assembly accessible from a single side, eliminating the need for bilateral access and auxiliary structures.
Solution Approach 2:
The invention extracts the connection mechanism from the traditional two-sided system and consolidates it into a one-sided operation. The threaded bar, nut, and washer assembly are designed to be installed and secured from a single access point, removing the requirement for auxiliary structures on the opposite side of the wall.
2Loss of time
If one-sided access is used for formwork positioning, then construction time and cost are reduced, but secure and watertight connection is compromised
Solution Approach 1:
The invention employs a composite connection system combining a threaded bar (metal), a nut (metal), and a washer with elastomeric polymer material. The elastomeric component provides sealing and watertight connection capabilities while the metal components ensure structural security. This composite approach maintains connection reliability while enabling one-sided access installation.
Solution Approach 2:
The invention changes the connection parameters by using a threaded fastening system with elastomeric sealing elements. The threaded bar allows for adjustable positioning and secure tightening from one side, while the elastomeric material provides compression sealing to ensure watertight connection. This parameter change enables both time efficiency and connection reliability.
3Ease of operation
If simple connection systems are used for formwork panels, then ease of installation is improved, but watertight connection and joint sealness are insufficient
Solution Approach 1:
The connection system combines simple metal fastening components (threaded bar and nut) with elastomeric polymer sealing material. The metal parts provide easy installation through threaded fastening, while the elastomeric washer ensures watertight sealing. This composite design achieves both operational simplicity and sealing reliability.
Solution Approach 2:
The elastomeric washer acts as an intermediary between the metal fastening components and the formwork panel. It mediates between the mechanical fastening action and the sealing requirement, providing both the simple installation characteristic of mechanical fasteners and the watertight seal characteristic of elastomeric materials.
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
Facilitates one-sided positioning of formwork panels, reducing construction time and cost by eliminating the need for auxiliary structures and ensuring joint tightness and panel width consistency.
Implementation Method 1
the first stop comprises a elastic material lip that provides the second end with a truncated cone shape and is configured to receive a bushing of the cylindrical central body
Implementation Method 2
the second stop comprises a elastic material lip that provides the first end with a truncated cone shape and is configured to receive a bushing of the cylindrical central body
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Device for the positioning of a first formwork panel (100) and a second formwork panel (101) for the construction of a concrete wall comprising a first flat sheet (3), a blind nut (4) configured to receive one end of a threaded bar (1); a first spacer (6), a cylindrical central body (10), a second spacer (12), a front plate (16) configured so that the threaded bar (1) comprises a second sheet (18) for the support of a second formwork panel (101); a tightening nut (19) and a handle (20) configured to facilitate the positioning and fixing of the tightening nut (19), with truncated cone-shaped bushings (11); the first and second stop have an elastic material lip (9) configured to receive a bushing (11) of the cylindrical central body (10).