Scaffolding Railing Attachment Adapter Wedge Locking Mechanism
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Solution Overview
Problem
Existing scaffolding systems face difficulties in easily and securely attaching and detaching railing devices, particularly on modular scaffolding posts with perforated discs, which complicates assembly and disassembly, especially when installing or removing leading railings from the same scaffolding level or from below.
Innovation Solution
A railing attachment adapter with a rigid railing attachment bracket permanently connected to the connection head by welding, featuring a rectangular or elongated through-hole for inserting railing ends, and a locking lever for secure locking, allowing detachable and secure attachment to scaffolding posts with perforated discs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wedge is inserted through a perforated disc to form a detachable connection, then the connection can be easily detached, but the assembly and disassembly process becomes complicated especially for leading railings
Solution Approach 1:
The connection head is divided into two separate parts: a first head part and a second head part. The wedge passes through both parts, creating a segmented structure that simplifies the attachment and detachment process while maintaining security
Solution Approach 2:
The wedge acts as an intermediary element between the connection head and the scaffolding tube, enabling easy attachment and detachment. The wedge can be inserted through the perforated disc to secure the railing or removed to detach it, simplifying the operation
2Reliability
If the connection head is designed with multiple wedge openings and contact surfaces, then the reliability of attachment is improved, but the manufacturing complexity increases
Solution Approach 1:
The connection head is segmented into two separate head parts, each with its own wedge opening and contact surface. This segmentation allows for simpler manufacturing of each individual part while achieving reliable attachment through the combined structure
Solution Approach 2:
The first head part and second head part are merged together with the wedge passing through both, creating a unified connection structure that combines the simplicity of individual parts with the reliability of multiple contact points
3Ease of operation
If the connection head tapers with wedge-like side wall parts, then the ease of insertion is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The side wall parts of the connection head are designed with a tapered geometry, changing the dimensional parameters from the base to the tip. This tapering facilitates easy insertion by guiding the connection head onto the scaffolding tube, while the specific wedge angle (40-50 degrees) balances insertion ease with manufacturing feasibility
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 simple, secure, and cost-effective attachment and detachment of railing devices on both modular and facade scaffolding posts, facilitating easy assembly and disassembly, and providing stable and safe fastening options for railing devices.
Implementation Method 1
a wedge for releasably attaching the device to a projection, preferably in the form of a perforated disc, of the framework element which has at least one opening for inserting the wedge
Implementation Method 2
the contact part has vertical contact wall parts which have vertical contact surfaces for contacting the scaffolding element outer surfaces of the scaffolding element
Implementation Method 3
the connection head with its side wall parts is in the third direction, tapering towards its contact side, and wherein the side wall parts have vertical side wall part outer surfaces which, viewed in the third direction, run in a wedge-like manner towards an imaginary central axis
Implementation Method 4
a locking lever which can be pivoted about a pivot axis on the railing attachment bracket
Implementation Method 5
a rectangular or elongated through-hole for inserting railing ends
Data Source
Figure 1.1~1.2
Figure 2.1~2.2
Figure 3.1~3.6
AI summary
The invention relates to a device (10) for detachably fastening a railing arrangement to a scaffolding element (12). It comprises a connection head (28) and a wedge (16). The connection head (28) has a first head part (26.1) and a second head part (26.2), which have wedge openings for the wedge (16). Between the first head part (26.1) and the second head part (26.2), a slot (52) is formed that is open towards the support side (23) and towards side wall part outer faces (46.1, 46.2; 46.3, 46.4) of side wall parts of the connection head (28). The slot (52) is delimited towards the first head part (26.1) with first slot faces of the head part (26.1) and is delimited towards the second head part (26.2) with second slot faces of the second head part (26.2), which extend on both sides of a fitting slot central plane of the fitting slot (52). The side wall part outer faces (46.1, 46.2, 46.3, 46.4) run in a wedge shape to a centre axis and enclose a wedge angle. A railing fastening device (62) is permanently fastened to a rear wall part of the connection head (28). The railing fastening device (62) contains a railing fastening tab (15), which has a through hole (63) which is rectangular or designed as an elongate hole extending along its longitudinal axis. The longitudinal axis extends perpendicular to the fitting slot central plane (55) and parallel to the centre axis.