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Portal grab cranes play a crucial role in port facilities for managing dry bulk cargo. This article examines the findings from experimental investigations into the dynamic loads experienced by the lifting mechanism of “Sokol” clamshell portal cranes, which are used extensively for the transfer of bulk materials at the seaport. To assess the dynamic forces, the electrotensometric technique was employed. Utilizing the gathered experimental results, the probabilistic characteristics regarding the distribution of operational dynamic loads within the grab ropes were deduced. The analysis of this information indicated that during the overloading of weights between 12 to 17 tons, the dynamic force coefficients in the trailing ropes fluctuated between 1.2 and 2.3. These findings suggest that the hoists are experiencing overloading. In addition, a histogram Histogram analysis showed that the crane predominantly overloaded loads weighing between 12 and 17 tons per lift.

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The Experimental Research the Forces Generated in the Ropes of a Portal Crane “Sokol” When Scooping Bulk Cargo in a Port

  • 会议论文

  • 发表日期：

    2025年

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  • Viktor Strelbitskyi,
  • Anatolii Konoplov,
  • Liubov Bovnegra,
  • Raul Turmanidze

摘要

Portal grab cranes play a crucial role in port facilities for managing dry bulk cargo. This article examines the findings from experimental investigations into the dynamic loads experienced by the lifting mechanism of “Sokol” clamshell portal cranes, which are used extensively for the transfer of bulk materials at the seaport. To assess the dynamic forces, the electrotensometric technique was employed. Utilizing the gathered experimental results, the probabilistic characteristics regarding the distribution of operational dynamic loads within the grab ropes were deduced. The analysis of this information indicated that during the overloading of weights between 12 to 17 tons, the dynamic force coefficients in the trailing ropes fluctuated between 1.2 and 2.3. These findings suggest that the hoists are experiencing overloading. In addition, a histogram Histogram analysis showed that the crane predominantly overloaded loads weighing between 12 and 17 tons per lift.