Cable tension monitoring system based on pulley shaft

Abstract

The invention discloses a cable tension monitoring system based on a pulley shaft, and relates to the field of ship structural mechanics testing, the cable tension monitoring system comprises a pulley shaft assembly and a stress sensor, and the pulley shaft is provided with a through hole; establishing a three-dimensional equivalent model of the pulley shaft assembly, performing finite element analysis, determining a stress data set at each finite element grid node on the inner surface of the through hole, screening out monitoring measurement points from all the finite element grid nodes, and arranging a stress sensor at each monitoring measurement point; training a neural network model by using the vectorized sample set to obtain model parameters, and constructing to obtain a tension monitoring model; according to the system, the actual measurement data set is collected in the working process of the pulley shaft assembly, the vectorized actual measurement data set is input into the tension monitoring model to obtain the tension of the cable, the tension on the cable can be obtained in time through the system, an existing common pulley shaft can be directly replaced, the application range is wide, the system is suitable for batch production, and the cost is low.

Description

technical field [0001] The invention relates to the field of ship structural mechanics testing, in particular to a cable tension monitoring system based on a pulley shaft. Background technique [0002] The cable winch is a common connection device for various ships and offshore platforms. The cable is connected to the seabed or other fixed facilities to ensure that the ship is moored or operated at a fixed position. For large ships and special operation ships, the tension of the cable is usually as high as 2000KN. To ensure the structural safety of the mooring system and adjust the mooring force reasonably, it is necessary to sense the tension of the cable acting on the pulley of the winch. [0003] At present, the methods for measuring pulley cable tension mainly include: (1) connecting a tension sensor at one end of the cable. This method requires the tension sensor to be arranged underwater or at the front end of the cable pile, which is inconvenient to deploy and has poo...

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Problems solved by technology

[0003] At present, the methods for measuring pulley cable tension mainly include: (1) connecting a tension sensor at one end of the cable. This method requires the tension sensor to be arranged underwater or at the front end of the cable pile, which is inconvenient to deploy and has poor durability; (2) Clamp the strain gauge on the cable, but this method will hinder the normal retraction and deployment of the cable, and requires on-site installation and debugging by professionals; (3) Other indirect measurement methods, such as arranging sensors on the winch, through calculating the indirect The disadvantage of obtaining pulling force is that this method needs to be customized, and requires on-site construction and debugging by professionals, and cannot achieve generalization and batch deployment

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