Hook Propulsion Control for Crane Lift Cable Oscillation
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Solution Overview
Problem
The oscillation of lift cables on cranes poses challenges in accurately controlling the placement and movement of loads, particularly due to increasing sway with longer cables and environmental factors like wind, which can compromise safety and operational efficiency.
Innovation Solution
A computer-implemented method that calculates a counter force to mitigate oscillation by simulating load conditions, wind conditions, and crane operations, using a propulsion system affixed to the hook to apply this force, potentially involving propellers or aerial vehicles, and adjusts the force based on real-time monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the length of the lift cable is increased to lift heavier loads, then the lifting capacity is improved, but the oscillation and sway of the load increases
Solution Approach 1:
The patent applies counterweight by using a propulsion system (such as a drone or aerial vehicle) that generates opposing forces to counteract the oscillation and sway of the load. The system calculates required counter forces and applies them through the propulsion system to stabilize the load, directly addressing the instability caused by increased cable length.
Solution Approach 2:
The system implements feedback by continuously monitoring load characteristics, wind conditions, and crane operational parameters, then using this information to dynamically calculate and adjust the counter forces applied by the propulsion system. This closed-loop control ensures optimal oscillation mitigation despite changing conditions.
2Adaptability or versatility
If wind conditions are present in the environment, then the crane can operate in various weather conditions, but the oscillation and sway of the load increases
Solution Approach 1:
The system monitors wind conditions as input parameters and dynamically adjusts the counter forces applied by the propulsion system. The feedback loop processes real-time wind data along with load and crane characteristics to calculate appropriate stabilization forces, enabling operation in varying weather conditions while maintaining load stability.
Solution Approach 2:
The system changes operational parameters by adjusting the magnitude and direction of counter forces applied by the propulsion system based on wind conditions. The calculation module modifies force parameters in real-time to compensate for wind-induced oscillations, allowing the crane to adapt to different weather scenarios.
3Productivity
If the crane undergoes acceleration or movement operations, then the productivity and speed of material transport is improved, but the oscillation and sway of the load increases
Solution Approach 1:
The system applies preliminary anti-action by calculating and applying counter forces before and during crane movement operations. The propulsion system proactively counteracts oscillations that result from crane acceleration and movement, allowing productive operations to proceed while maintaining load stability through preemptive stabilization forces.
Solution Approach 2:
The feedback mechanism continuously monitors crane operational characteristics including acceleration and movement, then dynamically adjusts the counter forces applied by the propulsion system. This real-time adjustment enables the system to maintain load stability during productive crane operations.
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
Effectively reduces and stabilizes the oscillation of lift cables, enhancing load control and safety by dynamically adjusting the counter force to maintain stability.
Implementation Method 1
instructing a propulsion system affixed to the hook to apply the counter force to the hook
Data Source
AI summary
Computer-implemented methods for mitigating oscillation of a lift cable on a crane are provided. Aspects include obtaining characteristics of a load affixed to the lift cable via a hook, wind conditions in a location of the lift cable, and operational characteristics of the crane. Aspects also include calculating an estimated oscillation of the load based on a simulation of the crane lifting the load in the wind conditions and the operational characteristics of the crane, calculating a counter force to be applied to the lift cable via the hook, wherein the counter force will reduce the oscillation of the lift cable, and instructing a propulsion system affixed to the hook to apply the counter force to the hook.