Two-Part G-Hook for Telescopic Support Weight Reduction
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Solution Overview
Problem
Conventional telescopic supports in the construction industry have G-hooks that are oversized for shear force carrying capacity, leading to unnecessary weight and cost due to overdimensioning for load transfer and bending stresses, which results in inefficient design and increased manufacturing costs.
Innovation Solution
A G-hook designed from two separate parts - a bolt and a bracket connected in a torsionally rigid manner, where the bolt is specifically dimensioned for force introduction and dissipation sections with varying curvatures to optimize shear and bending capacity, allowing for the use of different materials and reducing overall weight and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the G-hook is designed with a large cross-section to handle embedding stresses and bending moments, then the load-bearing capacity and structural integrity are improved, but the weight and manufacturing costs increase unnecessarily
Solution Approach 1:
The G-hook is divided into two separate components: a bolt with optimized cross-section for force transfer, and a bracket for captive attachment. This segmentation allows each component to be dimensioned according to its specific functional requirements, eliminating the need for an oversized uniform cross-section throughout the entire G-hook assembly.
Solution Approach 2:
The bolt is designed with varying curvature along its length, with higher curvature at the force introduction section and lower curvature at the force dissipation section. This local quality variation optimizes the distribution of stresses and allows for material savings in regions where full strength is not required, reducing overall weight while maintaining load-bearing capacity.
2Ease of manufacture
If the G-hook is designed as a one-piece component with uniform cross-section, then the manufacturing process is simplified, but the weight and costs increase due to overdimensioning
Solution Approach 1:
The G-hook is divided into two separate components: a bolt with optimized cross-section for force transfer, and a bracket for captive attachment. This segmentation allows each component to be dimensioned according to its specific functional requirements, eliminating the need for an oversized uniform cross-section throughout the entire G-hook assembly.
Solution Approach 2:
The bolt and bracket can be made from different materials optimized for their specific functions. The bolt requires high strength for force transfer, while the bracket needs adequate strength for captive attachment. This material differentiation allows for weight reduction in the bracket while maintaining overall structural integrity.
3Device complexity
If the G-hook uses the same cross-section throughout its length, then the design and manufacturing are simplified, but the diameter must be larger than necessary for shear force carrying capacity due to bending requirements
Solution Approach 1:
The bolt is designed with varying curvature along its length, with higher curvature at the force introduction section and lower curvature at the force dissipation section. This local quality variation optimizes the distribution of stresses and allows for material savings in regions where full strength is not required, reducing overall weight while maintaining load-bearing capacity.
Data Source
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AI summary
The invention relates to a G hook for the mutual, detachable connection of two support sections of a telescopic construction support, comprising a pin and a bow. The pin and the bow are different, separate parts that are connected to each other in a rotationally rigid manner. The pin comprises a force-application section having a surface that is curved in some regions and a force-removal section that is diametrically opposite to the force-application section, the surface of the force-removal section being substantially flat. The invention further relates to a telescopic construction support, the support sections of which are detachably connected to each other by means of a G hook according to the invention.