Force measuring device for heavy-load winch for ship

Abstract

The invention provides a force measuring device for a heavy-load winch for a ship. An existing mature three-pulley force measuring mechanism is adopted for the force measuring part of the force measuring device, but unlike the prior art, the three-pulley force measuring device can conduct synergic movement along with the irregular swinging of cables, and the measuring device achieves the purposes that the measuring device moves along with the cable output direction, so that the force measuring point of a sensor and the space positions of the cables are kept unchanged, the result measured by the measuring device approaches to the real value, and the accuracy of force measuring is guaranteed.

Description

Technical field: [0001] The invention relates to a force-measuring device of a marine heavy-duty winch, specifically a device that can adapt to harsh working environments to overcome the defects that the additional force and moment are generated due to the irregular swing of the cable and thus affect the measurement accuracy. Accurate and reliable force measuring device for heavy-duty marine winches. technical background: [0002] The deep water winch is a device used for lowering important instruments and equipment in offshore engineering. Generally, the winch is required to be equipped with a tension display function. To realize the display of tension, a tension sensor must be installed at the output end of the winch cable, and the installation position of the sensor is a key factor affecting the measurement results. The angle of the rope is constantly changing. If the measuring device is fixed and installed, the measurement result will definitely not meet the accuracy re...

AI Technical Summary

Problems solved by technology

[0003] The most commonly used cable force measuring device on the winch is composed of three small pulleys and pressure sensors. The middle small pulley is not on the same line as the other two small pulleys. The cable needs to pass through the three small pulleys in turn. When the cable is tensioned , the pressure sensor installed on the small pulley in the middle is stressed, and the force is converted into the tension of the cable by measuring the force. When the winch working in the deep sea lifts heavy objects, the cable is affected by the impact of seawater flow, and the cable will swing irregularly. , most of the commonly used pulley force measuring devices are fixedly installed on the winch. The middle small pulley of the three pulley force measuring mechanism in this fixed way will be subjected to the additional force generated by the irregular swing of the cable under the impact of sea water, thus It affects the accuracy of the force measurement. At the same time, when the cable on the drum is retracted, the angle of the cable at the three-pulley force measurement mechanism will also change, which also affects the accuracy of the force measurement. Therefore, it is necessary to A force-measuring device that can swing irregularly with the cable and keep the angle of the rope unchanged, so the present invention aims to solve the above problems

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