Scaffold Fall Protection Mount With Pivot Locking Pin
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Solution Overview
Problem
Existing scaffolding systems lack a definitive solution for attaching fall protection systems, leading to increased accident risks during construction, and require complex logistics for providing both permanent and temporary fall protection solutions.
Innovation Solution
A device with a tension pin mechanism that allows both permanent and temporary attachment of fall protection poles by securing a rocker arm against pivoting, using a tension pin to lock the attachment in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pendulum plate device is used to attach fall protection systems from the lower level, then the installation ease is improved, but the reliability deteriorates because the solution is non-definitive and allows accidental removal
Solution Approach 1:
The device transitions from a static locking mechanism to a dynamic two-mode system. The rocker arm can pivot during installation to guide the pole, then locks definitively when the tension pin is inserted. This dynamic behavior allows the same device to provide both ease of installation and reliable permanent attachment.
Solution Approach 2:
The device changes its functional state based on the presence or absence of the tension pin. Without the pin, the rocker arm is free to pivot (installation mode). With the pin inserted through the aligned openings, the rocker arm is constrained (secure mode). This parameter change enables the device to switch between ease of operation and high reliability.
2Reliability
If a definitive locking solution is implemented to prevent accidental removal, then the reliability is improved, but the ease of operation deteriorates because tool-free installation becomes impossible
Solution Approach 1:
The tension pin mechanism is designed to be self-servicing. The pin itself serves dual purposes: it is both the locking element that provides definitive attachment and the tool used to achieve the lock. By inserting the pin through the aligned openings in the rocker arm and support, the system locks itself without requiring external tools or complex procedures.
3Reliability
If separate temporary and permanent support systems are used, then the reliability is improved, but the device complexity and logistics worsen
Solution Approach 1:
The attachment device is designed as a universal system that can provide both temporary and permanent fall protection functions. The same rocker arm mechanism, when combined with or without the tension pin, serves both installation purposes. This eliminates the need for separate temporary and permanent support systems, reducing logistics complexity while maintaining reliability.
4Ease of operation
If the rocker arm is freely pivoting to allow installation from lower level, then the ease of operation is improved, but the reliability deteriorates because the fall protection can be accidentally removed
Solution Approach 1:
The attachment system is segmented into two functional components: the rocker arm mechanism that provides installation ease through pivoting, and the tension pin that provides reliability through definitive locking. This segmentation allows each component to optimize its specific function while working together as an integrated system.
Data Source
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AI summary
The invention relates to a device for attaching fall protection devices to scaffolding, which has L-shaped wall elements (51) on its longitudinal sides, between which a cover (52) is attached, which is provided with a recess (53), and the wall elements (51) are each provided with two holes (54, 55), wherein a bolt (3) is arranged in the first holes (54), to which a rocker arm (56) is attached, which consists of a plate (57) whose contour essentially corresponds to the contour of the recess (53) and the rocker arm (56) is provided with a support element (58) oriented essentially perpendicular to the plate (57).A vertically oriented web (59) is arranged on the plate (57), which is provided with an opening (591) that, in the vertically oriented state of the plate (57), aligns with the second holes (55) in the wall elements (51), wherein a tension pin (10) can be received from the second holes (55), which, in the assembled state, passes through the opening (591) in the web (59).