Ceiling Formwork Lowering Mechanism With Eccentric Lever Release
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Solution Overview
Problem
Existing lowering devices for ceiling formwork in the construction sector require significant effort and tools to loosen the locking mechanism, making it difficult to lower loaded formwork smoothly and quickly, leading to increased personnel and time expenditure during stripping.
Innovation Solution
A lowering device with a pivot bearing and eccentric lever design, allowing the lifting piston to be easily moved into a lowered position under load by disrupting its unstable balance, enabling smooth and quick activation without prior loosening, and featuring a simple operating principle for integration with various support elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bolt or wedge locking mechanism is used to secure the piston in the working position, then the piston can be reliably locked, but significant force and tools are required to release the locking mechanism under load
Solution Approach 1:
The patent transforms the static locking mechanism into a dynamic one by introducing an eccentric lever that can be easily rotated to change the locking state. The eccentric lever's rotational movement allows the operator to quickly transition between locked and unlocked states by simply rotating the lever, eliminating the need for significant force or tools to release the locking mechanism under load.
Solution Approach 2:
The patent changes the operational parameter from linear force application (pushing/pulling a bolt or wedge) to rotational motion (turning an eccentric lever). This parameter change allows the locking mechanism to be released with minimal effort, as rotational motion can be easily initiated and controlled, even under load conditions.
2Reliability
If conventional locking mechanisms are used, then the piston can be secured in position, but considerable personnel and time expenditure is required for releasing and lowering the formwork
Solution Approach 1:
The eccentric lever mechanism allows for rapid transition between locked and unlocked states through simple rotational motion. This dynamic design enables workers to quickly release and lower the formwork, significantly reducing the time and personnel required for the stripping process while maintaining reliable position security when locked.
3Ease of operation
If significant force is applied to release the locking mechanism, then the piston can be unlocked, but uncontrolled hammer blows can cause functional limitations and premature component failure
Solution Approach 1:
The eccentric lever provides a controlled dynamic mechanism for unlocking that eliminates the need for uncontrolled hammer blows. By rotating the eccentric lever, the locking mechanism is smoothly and controllably released, preventing damage to components while still enabling effective unlocking under load conditions.
Solution Approach 2:
The patent replaces the brute-force mechanical impact method (hammer blows) with a refined mechanical system (eccentric lever rotation). This substitution allows for controlled force application through the lever's rotational motion, unlocking the mechanism without causing functional limitations or premature component failure.
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
Enables efficient and rapid lowering of loaded ceiling formwork with minimal effort and tool requirements, reducing construction time and costs by allowing easy integration into support devices and simplifying the stripping process.
Implementation Method 1
the piston and the support base are supported against each other via the eccentric lever in the working position
Implementation Method 2
even under load, the piston can be moved into the lowering position with minimal effort by rotating the eccentric lever
Data Source
Figure 1a~1c
Figure 2a~3b
Figure 4~5
AI summary
The invention relates to a lowering system (10) for lowering ceiling formworks (70) during the removal of formworks of a building ceiling, comprising a reciprocating piston (14) and a support base (18), and a locking device, wherein the reciprocating piston (14) is slidably mounted in the support base (18), and can be pushed from an extended working position to a lowered position, and can be locked in the extended position by means of the locking device. The locking device has a pivot bearing and an eccentric lever (16), wherein the eccentric lever (16) is rotatably mounted in the pivot bearing, and the reciprocating piston (14) and the support base (18) are supported against each other in the working position by means of the eccentric lever (16).