Rope Swinging Safety System for Dynamic Load Management
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Solution Overview
Problem
Current safety systems for rope cranes fail to effectively manage dynamic loads caused by rope swinging, leading to inefficiencies, safety risks, and difficulties in adjusting rope swinging limits, which can result in accidents and inefficient use of crane capacity.
Innovation Solution
A rope swinging safety system comprising a device with manual and remote-controlled adjustment capabilities, visual warnings, and electronic notifications to prevent exceeding swinging limits, allowing for automatic and manual adjustments of rope swinging values, ensuring safe operation across all circular directions, and enhancing efficiency by managing vertical and horizontal movement speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rope angle measuring devices are made adjustable to change swinging limits, then adaptability improves, but device complexity and adjustment difficulty increase
Solution Approach 1:
The patent implements dynamic adjustment of rope angle measuring devices, allowing the swinging limit values to be changed during operation. The system includes an adjustment interface where operators can modify the maximum allowable rope angles for both x and y axes, enabling the crane to adapt to different load conditions and operational requirements without physical reconfiguration of the measuring devices themselves.
Solution Approach 2:
The control system serves multiple functions: it not only measures rope angles but also stores limit values, compares current angles against limits, generates warnings, and allows adjustment of parameters. This multi-functional approach consolidates what would otherwise require separate devices into a single integrated control unit, reducing overall system complexity while maintaining adaptability.
2Ease of operation
If rope angle measuring devices are made physically accessible for adjustment, then ease of operation improves, but mounting location constraints worsen
Solution Approach 1:
The patent introduces a remote adjustment interface that allows operators to modify rope angle limits from a convenient location away from the measuring device mounting point. The control system transmits adjustment commands wirelessly or through the existing control network, eliminating the need for physical access to the mounting location near the highest point of the fixed end of the rope.
3Reliability
If multiple sensors are used to limit crane operation, then safety improves, but information management complexity increases
Solution Approach 1:
The patent combines multiple sensor inputs (rope angle sensors in x and y directions, load sensors, speed sensors) into a single integrated control system that processes all inputs centrally. The system maintains a unified view of crane status, comparing all sensor readings against their respective limits and generating consolidated warning messages, thereby preventing information loss while maintaining comprehensive safety monitoring.
4Reliability
If rope swinging limits are set conservatively for safety, then reliability improves, but productivity decreases
Solution Approach 1:
The system dynamically adjusts operational parameters based on real-time conditions. When rope angles approach but do not exceed the maximum limits, the crane can continue operating at reduced speeds. Only when limits are actually exceeded does the system trigger warnings and prevent further operation. This dynamic approach maximizes productivity within safe boundaries rather than imposing static conservative limits.
Solution Approach 2:
The patent allows modification of the maximum rope angle parameters themselves through the adjustment interface. Operators can increase the allowable rope angles from default conservative values (e.g., 15 degrees) to higher values (e.g., 30 degrees) based on actual operational needs and safety assessments, thereby expanding the safe operating envelope and improving productivity while maintaining appropriate safety margins.
Data Source
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AI summary
The present invention relates to a rope swinging safety system, which aims to eliminate the safety risks caused by a rope swinging process in rope cranes, automatically calculates the amount of swinging depending on the angle of the rope or the diameter of the safe working area, allows parameter adjustment manually or by a remote controller, prevents erroneous adjustments, prevents lifting process when a determined swinging limit is reached such that it can be adapted to different situations easily, and is capable of electronically transmit to the remote controller (4), a device (3) and a remote controller (4) consist of the system.