Protective Scaffold Structure for Dynamic Cable Pulling Loads
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Solution Overview
Problem
Existing protective scaffolding structures are inadequate to handle the increased dynamic loads and risks associated with the pulling of heavier conductor cables, particularly during bundled cable pulling, leading to potential deformation and breach of safety distances, posing a significant danger to infrastructure and personnel.
Innovation Solution
A protective scaffold design with reinforced, higher mechanical strength beams and safety cables, along with multiple layers of safety nets, is implemented to absorb and distribute the dynamic loads, ensuring the scaffold structure remains stable and maintains safety distances even under extreme conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional scaffold beams are used, then the scaffold structure is simpler and easier to manufacture, but the scaffold cannot withstand the extreme dynamic loads during bundled cable pulling
Solution Approach 1:
The patent applies local quality by reinforcing only the uppermost beam with higher mechanical strength properties, while other beams can use standard specifications. This targeted reinforcement at the critical load-bearing position resolves the contradiction by providing necessary strength where dynamic loads are most severe without unnecessarily increasing complexity throughout the entire scaffold structure.
Solution Approach 2:
The patent employs composite materials by combining beams of different mechanical strength classes within the same scaffold structure. The uppermost beam uses material or design with higher mechanical strength properties, while lower beams use standard materials, creating a composite structure that optimizes both strength requirements and manufacturing simplicity.
2Reliability
If standard safety nets are used, then the scaffold is easier to assemble, but the safety nets may be breached under extreme dynamic impact loads
Solution Approach 1:
The patent applies beforehand cushioning by positioning the uppermost beam with higher mechanical strength above the safety nets. This reinforced beam acts as a preliminary protective element that absorbs and distributes dynamic impact loads before they reach the nets, preventing net breach while maintaining relatively simple overall structure.
3Stability of the object's composition
If the scaffold allows deformation under load, then the structure can absorb energy, but safety distances may be breached endangering personnel and infrastructure
Solution Approach 1:
The patent applies local quality by concentrating higher mechanical strength properties in the uppermost beam, which is the critical element for maintaining safety distances during cable pulling operations. This localized reinforcement ensures structural stability where it is most needed to prevent harmful effects, without requiring the entire scaffold to be overly robust.
4Power
If heavier conductor cables are used to increase transmission capacity, then energy transmission capability improves, but the dynamic loads on protective structures increase significantly
Solution Approach 1:
The patent addresses this contradiction by reinforcing only the uppermost beam that directly bears the dynamic loads from heavy conductor cables during pulling operations. This localized strength enhancement allows the scaffold to handle increased forces from higher-power transmission cables without requiring a complete redesign of the entire structure.
Data Source
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AI summary
The invention discloses a protective scaffold designed to protect objects below a power line during work on the power line, comprising a first scaffold section with: - a plurality of vertically arranged supports, which are arranged parallel to each other and spaced apart from each other in the longitudinal and transverse directions of the first scaffold section; - a plurality of horizontal beams, which connect the vertical supports and are arranged parallel to each other and spaced apart from each other; - characterized in that at least one uppermost beam has a higher mechanical strength than the average mechanical strength of the beams below it.