Ceiling Formwork Guiding Flank for Self-Lifting Shuttering

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Solution Overview

Problem

In incremental launching methods for bridge construction, the lifting and installation of ceiling formwork are labor-intensive and time-consuming due to poor accessibility for height adjustment, especially in the edge regions of bridge troughs, leading to increased costs and potential errors.

Innovation Solution

A method involving first and second support apparatuses arranged beneath the next concreting portion, with an anti-collision element that guides the ceiling formwork to lift it to the concreting level, preventing collisions and allowing vertical movement during horizontal shifting, thus simplifying and speeding up the process without requiring additional tools like rack-and-pinion jacks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional rack-and-pinion jacks and construction struts are used for lifting and installing ceiling formwork, then the formwork can be raised to the concreting level, but the process becomes labor-intensive and time-consuming due to poor accessibility in edge regions

Engineering Contradiction:

Improveease of shutteringVSAvoidtime for shuttering

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The ceiling formwork lifts itself during the shifting process by colliding with the support apparatus positioned in the shuttering position. The horizontal shifting motion is automatically converted into vertical lifting motion through the anti-collision element, eliminating the need for separate lifting operations and making the system self-servicing.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention merges the shifting function and lifting function into a single integrated process. By positioning the support apparatus in the shuttering position and using the anti-collision element, the horizontal shifting operation simultaneously accomplishes both horizontal movement and vertical lifting, combining two previously separate operations into one.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If multiple support apparatuses are positioned in the shuttering position to ensure proper lifting, then lifting reliability improves, but the risk of collision between the ceiling formwork and support apparatus increases

Engineering Contradiction:

Improvereliability of shutteringVSAvoidcollision risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention converts the potentially harmful collision between the ceiling formwork and support apparatus into a beneficial lifting mechanism. The anti-collision element is designed to transform the horizontal collision force into vertical lifting force, so that what would normally be a damaging impact becomes the driving mechanism for achieving the desired lifting effect.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The anti-collision element acts as an intermediary between the ceiling formwork and the support apparatus. It mediates the interaction by providing a controlled interface that guides the formwork during collision and converts horizontal motion into vertical lifting, preventing direct harmful contact while enabling the desired lifting action.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If the ceiling formwork is shifted horizontally without lifting, then the shifting process is simpler, but the formwork remains at the wrong height for the next concreting cycle

Engineering Contradiction:

Improvecomplexity of shifting processVSAvoidpositioning accuracy

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The invention adds a vertical dimension to the horizontal shifting process. By using the anti-collision element to convert horizontal collision force into vertical lifting force, the system simultaneously achieves both horizontal movement and vertical positioning, transforming a one-dimensional shifting operation into a two-dimensional positioning operation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11788307B2Method for displacing a ceiling formwork, collision protection element, and ceiling formwork, supporting device and incremental launching device comprising such a collision protection element

Publication Date: 2023.10.17 PERI GMBH

AI summary

A method for displacing a ceiling formwork for a nearest concreting section, wherein first and second supporting devices for supporting the ceiling formwork are arranged below the nearest concreting section. Said supporting devices each have a shuttering position and a stripping position, wherein the ceiling formwork is raised to a concreting level in the shuttering position and lowered relative to the concreting level in the stripping position. The first supporting device is moved into the stripping position and the second supporting device is moved into the shuttering position, and a collision protection element is arranged between the second supporting device and an end face of the ceiling formwork when the end face of the ceiling formwork strikes the second supporting device after passing over the first supporting device, so the collision protection element forms a flank rising in the displacement direction for guiding the ceiling formwork in the displacement direction.