Tower Crane Boom Guy Cable Protection
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Solution Overview
Problem
Existing methods for protecting land during overhead power line assembly and maintenance operations are inconvenient and costly, as they often require interrupting activities on the terrain, posing safety risks and financial penalties.
Innovation Solution
A device and method utilizing a robust tower crane with a mast and jib, equipped with transverse rods and guy cables, to securely protect the terrain without interrupting normal activities, by pivoting the crane to extend the boom above the terrain and securing it with cables to a fixed support point, thereby preventing overhead lines from landing on the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective installation is implemented using traditional methods (interrupting activity), then safety is improved, but productivity and economic efficiency deteriorate
Solution Approach 1:
The patent introduces a protective installation comprising a tower crane with boom, transverse rods, and cable system as an intermediary structure between the overhead power lines and the terrain. This mediator provides physical protection without requiring interruption of activities on the terrain below, thus maintaining productivity while ensuring safety.
2Reliability
If a protective installation is implemented using traditional methods, then safety is improved, but device complexity and installation time worsen
Solution Approach 1:
The patent employs a tower crane, which is a multi-functional device commonly used in construction, for the specific purpose of protecting terrain during overhead power line operations. This universal application of an existing robust structure reduces the need for specialized complex installations while maintaining safety effectiveness.
Solution Approach 2:
The protective installation is segmented into modular components: the tower crane structure, the boom with transverse rods, and the cable fastening system. This segmentation allows for easier assembly, disassembly, and transportation compared to a monolithic protective structure, reducing installation complexity and time.
3Ease of operation
If the boom is extended over the terrain without support elements, then ease of operation and assembly time are improved, but stability may worsen
Solution Approach 1:
The patent extracts and eliminates the need for additional support elements on the terrain by utilizing the tower crane's inherent structural stability and the cable fastening system. The boom is guyed at its second end to a fixed support point, providing necessary stability without requiring extra support structures on the protected terrain, thus simplifying operation and assembly.
Data Source
Figure 1
AI summary
The site security device (T) comprises a tower crane (10) equipped with a mast (11) and a boom (12) extending along a longitudinal axis (D) and having first (12em) and second (12eh) ends opposite each other along the longitudinal axis (D). The tower crane (10) also includes transverse rods (13) mounted on the boom (12) and attachment means (14) disposed at the second end (12eh) and configured to cooperate with a cable (15). The device is equipped with fastening means (16) configured to attach the cable (15) to a fixed support point (P2). The cable (15) is configured to connect the boom (12) via the attachment means (14) and the fixed support point (P2) via the fastening means (16).