Ceiling Formwork Lowering with Eccentric Lever Lock Release
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Solution Overview
Problem
Existing lowering devices for ceiling formworks require significant force and tools to release the locking mechanism, making it difficult and time-consuming to dismantle formworks under load, which can lead to functional impairments and increased staffing and time requirements.
Innovation Solution
A lowering device with a locking apparatus featuring a pivot bearing and eccentric lever, allowing the lifting piston to be locked in an unstable equilibrium, enabling it to be easily slid into a lowered position with minimal force, even under load, by rotating the eccentric lever, thus simplifying the dismantling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a pin or wedge locking mechanism is used to fix the lifting piston in the working position, then the lifting piston can be securely locked, but significant force and tools are required to remove the locking mechanism when under load
Solution Approach 1:
The locking mechanism transitions from a static pin/wedge to a dynamic spring-loaded ball system that automatically adjusts between locked and unlocked states based on load conditions, enabling easy operation when under load while maintaining secure locking when needed
Solution Approach 2:
The system changes the locking parameter from fixed geometric interference (pin/wedge) to variable elastic deformation (spring-loaded ball), allowing the locking force to be dynamically adjusted based on the applied load, facilitating easy release when under load
2Stability of the object's composition
If a pin or wedge locking mechanism is used, then the lifting piston can be locked in position, but the releasing process requires significant staffing and time requirements
Solution Approach 1:
The spring-loaded ball mechanism automatically performs the locking and unlocking functions based on load conditions without requiring manual intervention, reducing both staffing requirements and time for the releasing process while maintaining position stability
3Ease of operation
If tools such as hammers or levers are used to release the locking mechanism, then the formwork can be dismantled, but functional impairments and premature component failure may occur
Solution Approach 1:
The system replaces the need for external mechanical tools (hammers, levers) with an internal spring-loaded ball mechanism that uses elastic force to automatically release the locking position, eliminating the need for damaging external forces and preserving component durability
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 quick and simple activation of the lowering device under load, reducing the need for tools and time, allowing for efficient dismantling of ceiling formworks with significant time savings and cost benefits.
Implementation Method 1
The locking apparatus has a pivot bearing and an eccentric lever, the eccentric lever being rotatably secured in the pivot bearing, and the lifting piston and the support base being supported against one another in the working position by means of the eccentric lever
Implementation Method 2
the lifting piston can be transferred automatically from the working position into the lowered position, under the effect of gravity
Data Source
AI summary
A lowering system for lowering ceiling formworks during the removal of formworks of a building ceiling, comprising a reciprocating piston and a support base, and a locking device, wherein the reciprocating piston is slidably mounted in the support base, 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, wherein the eccentric lever is rotatably mounted in the pivot bearing, and the reciprocating piston and the support base are supported against each other in the working position by means of the eccentric lever.