Ceiling Formwork Lifting Device with Separate Swiveling Unit

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Solution Overview

Problem

Existing methods for shuttering and removing ceiling formwork in construction are inefficient and pose safety risks due to the need for operators to stand under heavy formwork elements during assembly and disassembly.

Innovation Solution

A lifting and pivoting device with a separate swiveling unit and cable winch system allows for safe and ergonomic operation from a common operating area, enabling the device to lift and pivot ceiling formwork elements without requiring operators to be under the formwork, featuring a handle bar for manual operation and a damping cylinder for stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If operators manually assemble and disassemble ceiling formwork elements directly under the formwork, then the assembly and disassembly process can be performed, but safety risks increase and working conditions deteriorate

Engineering Contradiction:

ImprovesafetyVSAvoidworking conditions

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

A lifting device with a pivotable extension arm and holder acts as an intermediary between the operator and the ceiling formwork element. The operator controls the device from the ground level, and the device transfers this control to manipulate the formwork element at height, eliminating the need for operators to work directly under the formwork.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The manual mechanical operation of directly handling formwork elements is replaced by a controlled lifting device with cable winches and pivotable mechanisms. This substitution automates the dangerous manual operations while maintaining operational control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If a lifting device with separate swiveling unit and cable winch system is used, then safety and ergonomics are improved, but device complexity increases

Engineering Contradiction:

ImproveergonomicsVSAvoiddevice structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The lifting device is segmented into functionally independent units: a base unit, a pivotable extension arm, a separate swiveling unit with holder, and cable winch systems. This segmentation allows each component to perform its specific function efficiently while enabling independent control and maintenance of individual modules.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The device incorporates multiple dynamic elements including a pivotable extension arm that can adjust in height, a swiveling unit that can rotate, and cable winches that provide controlled movement. These dynamic features enable flexible and ergonomic operation from ground level while managing the complexity through modular design.

Inventive Principle:

Principle #15Dynamics

3Reliability

If ceiling formwork elements are lifted and pivoted using a mobile lifting and swiveling device, then work safety increases, but the device must be moved frequently

Engineering Contradiction:

Improvework safetyVSAvoidassembly efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The lifting device is designed as a universal system that can perform multiple functions: lifting ceiling formwork elements, pivoting them into position, and facilitating both assembly and disassembly operations. This multi-functionality reduces the need for multiple specialized devices while maintaining high safety standards.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device enables continuous operation through its mobile design, allowing it to be repositioned along the ceiling structure. The pivotable extension arm and swiveling unit maintain continuous control over the formwork element throughout the assembly or disassembly process, eliminating interruptions and maintaining productivity despite the mobile nature of the device.

Inventive Principle:

Principle #20Continuity of useful action

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

Enhances safety and comfort by allowing operators to manage ceiling formwork elements from a secure location, reducing physical strain and risk, while enabling efficient assembly and disassembly of formwork elements.

Implementation Method 1

a first cable winch (3) for vertical deployment of a movable carrier (6) of the lifting unit opposite a base (7) of the lifting and pivoting device (1), and a second cable winch (3) for actuation of the pivoting unit (2)

Methodology Applied

Scientific EffectMechanical Advantage: Mechanical Advantage

Implementation Method 2

In a preferred embodiment, the pivoting unit (2) has at least one holder (2a, 2b) for holding a ceiling formwork element (D)

Methodology Applied

Scientific EffectDamping: Damping

Data Source

PatentEP2839096B1Lifting device for ceiling formwork elements and method

Publication Date: 2018.03.21 DOKA GMBH

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AI summary

The invention relates to a lifting and swiveling device for setting up and stripping ceiling formwork in the field of construction, a method for setting up a ceiling formwork, and method for stripping a ceiling formwork. The lifting and swiveling device can be actuated from an operating area in such a way that the lifting and swiveling device can set up and strip ceiling formwork elements by means of a swiveling unit and a lifting unit separate from the swiveling unit.