Relevant bibliographies by topics / Grab unloading

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Grab unloading'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Grab unloading"

1

Zhang, GaoGe, and Yang Xiang. "Study on Control System of Bridge-Type Grab Ship Unloader." Journal of Physics: Conference Series 2483, no. 1 (2023): 012052. http://dx.doi.org/10.1088/1742-6596/2483/1/012052.

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Abstract In order to improve the automation degree and unloading efficiency of the ship unloading control system of the large coal-fired power plant, the structure, operation principle and workflow of the bridge-type grab ship unloader in a coal-fired power along the river are analysed, and the control system of ship unloader software based on PLC is studied and designed. The designed control system of bridge grab ship unloader is convenient to operate under different working conditions and improves the automation degree and efficiency of coal unloading and also provides an application example
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2

He, Cheng Zhong, and Xi Zhi Zhou. "The Dynamic Analysis of Portal Crane with Self-Funnel under Unloading Process." Advanced Materials Research 740 (August 2013): 249–53. http://dx.doi.org/10.4028/www.scientific.net/amr.740.249.

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In order to get the displacement response curve of the Portal Crane under four phase of unloading process, the vibration system was built, the vibration differential equation and displacement response expression were deduced, combining with the actual case, the displacement response expression and displacement response curve were deduced in the open grab time 1.5 s and 4 s. The results show that: the unloading process is an important factor affecting the structural vibration; Displacement peak and open grab time are inversely proportional; Increase the open grab time can reduce the vibration o
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3

Zhang, Hanzhong, Wenjun Meng, Biao Zhang, et al. "Flow Field Characteristics of Fugitive Dust from Grab Unloading in an Open Space." Processes 12, no. 1 (2023): 49. http://dx.doi.org/10.3390/pr12010049.

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Aiming at addressing the problem of dust generated when grab is unloaded, the flow field characteristics of fugitive dust in an open space were studied and reflected its unstable and complex nonlinear dynamic process. Using coal, sand, and flour as research objects, an experimental model and measurement system for grab unloading were built, and the dust diffusion range, diffusion speed and direction, settling time, dust concentration, and induced wind velocity at different measurement points were compared. The computational fluid dynamics–discrete element method (CFD-DEM) coupling method was a
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4

Purwantini, Sri, Anicitus Agung Nugroho, and Muhammad Ilham Al Islami. "The Impacts of Clinker Spills in Loading and Unloading Activities at the Private-Interest Terminal." RSF Conference Series: Engineering and Technology 3, no. 1 (2023): 304–12. http://dx.doi.org/10.31098/cset.v3i1.764.

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The private-interest terminal functions as a berth for ships serving their interests to facilitate company product distribution. The clinker spill problems often occur during loading activities to bulk carriers at the private-interest Terminal. Clinker spills have negative impacts on clinker loading and unloading activities and the siltation of the jetty. This study aimed to determine the causes and impacts of clinker spills in loading and unloading activities at the private-interest Terminal. The method in this research is qualitative method with a case study approach. Data was obtained throu
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5

Miao, Yubin, Fenglin Xu, Yanwei Hu, Jianping An, and Ming Zhang. "Anti-swing control of the overhead crane system based on the harmony search radial basis function neural network algorithm." Advances in Mechanical Engineering 11, no. 3 (2019): 168781401983445. http://dx.doi.org/10.1177/1687814019834458.

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The swing of the grab is a main factor affecting the working efficiency of overhead cranes. Thus, planning the optimal motion path can reduce the adverse effects caused by the grab swing and improve the loading and unloading efficiency. The dynamic model of the trolley–grab system is established by considering factors like the change of rope length, wind load, and air resistance. First, the radial basis function neural network is applied to generate a feasible motion trajectory of the crane trolley. Taking the swing angle and angular velocity of the grab at the discharge point as evaluation, t
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6

Song, Yuechang, and Mingxu Wang. "Study on induced airflow law of grab unloading based on CFD-DEM." Advanced Powder Technology 35, no. 7 (2024): 104510. http://dx.doi.org/10.1016/j.apt.2024.104510.

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7

Rislamy, Achmad Fany, Nina Aini Mahbubah, and Dzakiyah Widyaningrum. "ANALISIS RISIKO KERUSAKAN PADA ALAT BERAT GRAB DENGAN METODE FAILURE MODE AND EFFECT ANALYSIS (Study Kasus: PT SIAM MASPION TERMINAL GRESIK)." PROFISIENSI: Jurnal Program Studi Teknik Industri 8, no. 1 (2020): 36–43. http://dx.doi.org/10.33373/profis.v8i1.2553.

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Preventive maintenance is considered as keypoint in maintenace management in order to maintain logistics’ steadiness along with pre and post production process. PT. Siam Maspion Terminal is one of the leading port’s service company which is provide logistics services on terminal port. Grab heavy eguipment is considered as the main equipment during looading and unloading process. Initial instigation found that inspite of periodically maintenance have been implemented, however, a high number of machine’s downtine have been identified. This study aims to analyze the cause and effect risk failure
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8

Jung, Ga-Eun, Woo-Hee Jeong, Seok-Ju Lee, Jae-In Lee, Tae-Won Kim, and Hae-Jin Sung. "Design and Simulation-Based Validation of an AI Model for Predicting Grab-Type Ship Unloader Operation Data." Journal of Marine Science and Engineering 12, no. 8 (2024): 1322. http://dx.doi.org/10.3390/jmse12081322.

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Along with seaports automation, there is growing interest in the automation of Grab-Type Ship Unloader (GTSU) that unloads coal and iron ore from bulk carriers. Autonomous unloading operations of GTSU offer the potential for significant productivity improvement and cost savings. In this paper, an AI model trained with manual operation data was designed for GTSU automation operation, and the AI model was verified through the equation-of-motion-based GTSU operation simulator. The operation data of hoist, grab, and trolley were predicted by training the designed AI model with the manual operation
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9

Fomin, Oleksij, Alyona Lovska, Pavel Kučera, and Václav Píštěk. "Substantiation of Improvements for the Bearing Structure of an Open Car to Provide a Higher Security during Rail/Sea Transportation." Journal of Marine Science and Engineering 9, no. 8 (2021): 873. http://dx.doi.org/10.3390/jmse9080873.

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This article presents the most frequent damage in the bearing structure of a rail car during rail/sea transportation. The study includes load modes for the bearing structure of an open car such as unloading with a grab and transportation by a train ferry. It was found that the most vulnerable element of the bearing structure of an open car during unloading with a grab is the top cord. The authors suggest applying a viscous material (an elastomer) to reinforce the top cord. This solution was confirmed by means of a strength calculation, whose results showed the efficiency of the solution. The b
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10

Zhang, Hanzhong, and Wenjun Meng. "Study on Dust Suppression of Air Curtain Soft-Sealing System of Grab Ship Unloader." Processes 10, no. 8 (2022): 1505. http://dx.doi.org/10.3390/pr10081505.

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In order to suppress the irregular diffusion of dust in the unloading process of grab ship unloaders, an air curtain soft-sealing system was designed that can effectively block the air flow and restrict the diffusion of pollutants and reduce the average mass fraction of pollutants outside the air curtain plane by 70.02%. The grab unloading model was constructed using the Computational Fluid Dynamics–Discrete Element Method (CFD-DEM) coupling method, and the diffusion law of the gas–solid two-phase flow field of the falling bulk material was studied. Moreover, the motion trajectory and velocity
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Dissertations / Theses on the topic "Grab unloading"

1

Colafemea, Angelo Antonio. "Modelamento numérico da técnica de normalização linear para determinação de curvas J-R." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-20092016-115454/.

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Neste trabalho os resultados da metodologia de normalização de E. D. Reese e K. H. Schwalbe para a obtenção de curvas J-R, são comparadas com aquelas obtidas pela tradicional Técnica de Variação de Flexibilidade Elástica. Ambos os métodos foram aplicados à um aço de grau nuclear A508-CL3A, quando vários corpos-de-prova miniaturizados 0.394TC[S], foram testados em temperaturas típicas de operação de vasos de pressão nuclear. Corpos-de-prova miniaturizados formam tratados termicamente tentando simular o comportamento exibido pelos aços estruturais quando submetidos à diferentes níveis de exposiç
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Journal articles
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