Concrete Slab Prop Stripping Mechanism With Rotating Plates
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Solution Overview
Problem
Conventional props for concrete floor slabs are difficult to strip due to the need for manual hammering and can be damaged during stripping, leading to a shortened operating life.
Innovation Solution
A device with rotating and translating plates and a spring mechanism that allows easy stripping by rotating a handle, enabling the prop to be removed without manual force, and featuring a spring for automatic reformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional props are stripped by hammering the ring nut, then the prop can be removed from the concrete slab, but the operation becomes complex and difficult requiring significant manual force
Solution Approach 1:
A wedge-shaped tool is introduced as an intermediary between the hammer and the ring nut. The wedge converts the hammer blows into a mechanical lever action that amplifies the force applied to the ring nut, enabling the prop to be loosened and stripped with significantly reduced manual effort compared to direct hammering.
Solution Approach 2:
The prop design incorporates a self-service mechanism where the wedge tool, when inserted and struck, automatically leverages the compression force already present in the compressed prop to amplify the stripping action. The stored elastic energy in the compressed prop assists in the stripping process, reducing the need for continuous external force application.
2Ease of operation
If conventional props are stripped by repeated hammer blows, then the prop can be removed, but the prop deteriorates and its operating life is drastically shortened
Solution Approach 1:
The wedge-shaped tool serves as a mechanical intermediary that distributes and amplifies force more efficiently than direct hammering. By using the wedge's lever action, the stripping force is applied more uniformly and with less shock to the prop components, reducing damage to the ring nut, pins, and tubular bodies during the stripping process.
Solution Approach 2:
The compressed prop's stored elastic energy is harnessed to assist in its own stripping process. When the wedge is inserted and struck, it releases the stored energy in a controlled manner, allowing the prop to help itself be stripped rather than requiring excessive external force that would damage the prop components.
3Strength
If the prop is compressed between concrete slabs during hardening, then it provides necessary support, but it becomes trapped and difficult to remove later
Solution Approach 1:
The wedge-shaped tool is inserted between the compressed components of the prop (typically between the ring nut and the tubular body) to act as a mechanical intermediary. This wedge creates a lever arm that converts relatively small applied forces into large separating forces, enabling the trapped prop to be pried loose from the compressed concrete slabs without requiring excessive manual force or damage to the prop structure.
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 easier, faster, and less damaging prop stripping, extending the device's operating life and reliability.
Implementation Method 1
featuring a spring for automatic reformation
Data Source
AI summary
A device for forming/stripping props for castings of concrete floor slabs, which comprises, along its axis of extension, in the following order:a first plate, which is annular and fixed with respect to the axis of extension, and which has a plurality of first protrusions which are directed toward a second plate that can rotate and/or translate on a plane that is perpendicular to the axis of extension and is substantially parallel to the first plate, and plurality of second protrusions which are directed toward the first plate, the second plate having a plurality of third protrusions which are directed toward a third plate, the third plate being annular and fixed with respect to the axis of extension and being substantially parallel to the first plate, and having a plurality of fourth protrusions which are directed toward the second plate.