Telescopic Edge Protection Post With Two-Stage Tensioning
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Solution Overview
Problem
Existing telescopic support posts for edge protection systems face challenges with insufficient tensioning, particularly under significant wind loads, and cumbersome mounting processes that require users to hold the inner tube in an extended position while operating the tensioning lever.
Innovation Solution
A telescopic edge protection post with a tensioning unit featuring a primary and secondary tensioning portion, where the secondary portion can be tensioned by hand using compression springs, allowing initial securement between surfaces without additional operation, and subsequent primary tensioning for enhanced stability without needing to hold the inner tube extended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single tensioning portion is used in existing telescopic support posts, then the structure is simpler, but the tensioning force is insufficient under significant wind loads
Solution Approach 1:
The tensioning element is divided into two distinct portions: a inner tube portion and an outer tube portion. Each portion can be independently tensioned, allowing the system to generate greater total tensioning force by combining both portions while maintaining a relatively simple overall structure.
2Ease of operation
If the inner tube is extended by hand to the maximum position before tensioning, then the tensioning lever can engage, but the user must hold the inner tube in position simultaneously making the mounting troublesome
Solution Approach 1:
The inner tube portion of the tensioning element is pre-tensioned by hand extension of the inner tube before the outer tube is tensioned. This preliminary action secures the inner tube in position, eliminating the need for the user to hold it while operating the tensioning lever for the outer tube.
3Strength
If the tensioning element is tensioned by a short distance using the pivoting lever, then the lever mechanism is simple, but there is insufficient tension in the post to keep it in place under significant wind load
Solution Approach 1:
The system transitions from a static single-tensioning configuration to a dynamic two-stage tensioning process. First, the inner tube is extended by hand to pre-tension the inner tube portion. Then, the pivoting lever is used to further extend the inner tube, tensioning the outer tube portion. This dynamic sequence allows greater total tensioning distance and force while keeping the lever mechanism itself relatively simple.
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
Facilitates easy and safe mounting of the edge protection post by allowing hand-tensioning of the secondary portion for initial securement and subsequent primary tensioning for increased stability, addressing the issues of insufficient tension and cumbersome mounting.
Implementation Method 1
The tensioning unit comprises a tensioning element having a primary tensioning portion and a secondary tensioning portion... Each comprises a compression spring
Data Source
AI summary
A telescopic edge protection post arrangeable between a floor and a ceiling, comprising outer and inner tubes, each comprising a bottom end and a top end, the inner tube extending into the outer tube and being movable with respect thereto between an extended position and a collapsed position. The post further comprises a locking mechanism to lock the inner tube with respect to the outer tube in the extended position, and a tensioning unit arranged at the top end of the inner tube. The tensioning unit comprises a tensioning element having a primary and secondary tensioning portions, wherein tensioning of the secondary tensioning portion requires a lower force than the primary tensioning portion, allowing tensioning of the secondary tensioning portion by extending the telescopic edge protection post by hand into engagement with the floor and the ceiling. Further, the primary and secondary tensioning portions each comprise a compression spring.