Scaffold Intermediate Bar with Load-Activated Locking Mechanism
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Solution Overview
Problem
Existing transverse coupling bars in scaffolding constructions are prone to accidental lifting during work, leading to potential collapse, and their locking mechanisms are either insecure or require attention, which can result in hazardous situations.
Innovation Solution
The integration of movably connected locking members on the intermediate bar, comprising locking parts and operating parts, which automatically lock into place under the load of a further scaffold part, preventing undesirable lifting and ensuring secure engagement without additional action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is provided on the transverse coupling bar, then the security against accidental lifting is improved, but the device complexity increases and the locking may become stuck or require attention
Solution Approach 1:
The locking mechanism is designed to lock automatically under load without requiring user intervention. The operating part protrudes in the unloaded state and automatically locks when load is applied, making the system self-regulating and eliminating the need for manual locking operations.
Solution Approach 2:
The locking mechanism transitions between unlocked and locked states dynamically based on the load condition. The operating part moves from a protruding position (unlocked) to a retracted position (locked) automatically in response to applied load, creating a responsive, adaptive system.
2Reliability
If a locking mechanism is provided on the transverse coupling bar, then the security against accidental lifting is improved, but the ease of operation deteriorates due to required attention and potential sticking
Solution Approach 1:
The system performs the locking function automatically in response to load application, eliminating the need for user attention or manual operation. The operating part self-actuates based on the physical state of the structure, making the system foolproof and easy to operate.
Solution Approach 2:
The locking mechanism responds to feedback from the load condition itself. When load is applied to the transverse coupling bar, this physical feedback automatically triggers the locking action, creating a closed-loop system that adapts to actual usage conditions.
3Ease of operation
If the operating part protrudes outside the intermediate bar in unloaded situation, then the ease of operation is improved for receiving the further scaffold part, but the stability deteriorates when unloaded
Solution Approach 1:
The operating part dynamically changes its position based on load conditions. In the unloaded state, it protrudes to facilitate easy placement of the scaffold part. When load is applied, it automatically retracts to engage the locking mechanism, providing stability only when needed.
Solution Approach 2:
The operating part is designed as a separate, movable component distinct from the main intermediate bar structure. This segmentation allows it to independently change position between protruding (for operation) and retracted (for stability) states without affecting the overall structural integrity.
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
The solution significantly reduces the risk of scaffold collapse by providing a secure and automatic locking mechanism that engages without user intervention, ensuring stability and ease of disassembly.
Implementation Method 1
The locking pin is axially movable counter to a spring tension. The locking pin will thus automatically snap back out of the locking cavity under the influence of the spring tension as soon as the further scaffold part is removed.
Implementation Method 2
the locking members comprise a set of locking hooks connected pivotally to the intermediate bar and having on a first side of a pivot shaft an operating handle which protrudes outside the intermediate bar in unlocked situation, and on an opposite side of the pivot shaft a locking hook which engages round at least a part of the scaffold part in locking situation.
Data Source
Figure 1~3
Figure 4~7
AI summary
A scaffold element (1) for placing between a set of scaffold parts, intended and adapted to receive a further scaffold part (15) thereon, comprises an intermediate bar (3) with a support member (5) on opposite outer ends for supporting therewith on either side on the set of scaffold parts (17). On the opposite outer ends of the intermediate bar locking members (9,11) which are movably connected thereto are provided for co-action with the set of scaffold parts (17). The locking members each comprise a locking part (11) for locking to the scaffold part (17) and an operating part (9) for actuating the locking part (11). In the unlocked situation the operating part (9) protrudes outside the intermediate bar in order to receive the further scaffold part thereon. Under the load of the further scaffold part (15) the operating part carries the locking part to a locking situation in which the intermediate bar is not connected in freely releasably manner to the set of scaffold parts.