Simulation tests of new solution of the longwall shearer haulage system

Kotwica, Krzysztof; Stopka, Grzegorz; Gospodarczyk, P.

doi:10.1088/1757-899x/679/1/012002

Cited by 6 publications

(3 citation statements)

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“…it enables quick verification of design assumptions in terms of design parameters of individual manipulator elements. currently, such simulation tests are very commonly used to facilitate the design process and introduce possible model changes [16,17].…”

Section: Characteristics Of the Computer Applicationmentioning

confidence: 99%

Computer-Aided Selection of the Stabilising System Parameters of the Mobile Transport and Assembly Manipulator in Mining Excavations

2023

Archives of Mining Sciences

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Computer-Aided SeleCtion of the StAbiliSing SyStem pArAmeterS of the mobile trAnSport And ASSembly mAnipulAtor in mining exCAvAtionSShifting masses in a confined space in the company of other machines and devices, which limits the manoeuvring and transport area, poses a significant problem in every field of industry, especially with underground mining. the works involved in transporting and manoeuvring masses in underground workings are challenging and are most often performed using various auxiliary machines or manually. hence the need arose to develop a device carrying out activities related to the shifting of masses with the assumed maximum value. the device was created as a result of cooperation between fAMA sp. z o.o. and the AGh university of Science and technology in Kraków, poland. the mining modular transport and assembly unit (Mzt-M) enables assembling and transporting various masses, especially the elements of the roadway support in the face. the primary function of this device is its movement in the excavation along with the transported mass and delivering it to a specific place. therefore, an important issue is to ensure the module's stability in different phases of its operation (lifting, transport, manoeuvring, feeding, lowering) due to the limited space in the excavation. that is why an analytical model and specialised software were created to determine the design parameters of the device as a function of its operating phases, especially the counterweight's mass. As previously mentioned, an analytical model (physical, mathematical) with equations and applications written in Microsoft Visual Studio and Matlab was used for this purpose. it is beneficial at the design or construction changes stage. calculation results are documented in the form of numerical summaries and graphs.

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Section: Characteristics Of the Computer Applicationmentioning

confidence: 99%

Computer-Aided Selection of the Stabilising System Parameters of the Mobile Transport and Assembly Manipulator in Mining Excavations

2023

Archives of Mining Sciences

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“…Source: (Kotwica et al, 2019) The wear phenomena became more severe when the power of haulage units and weights of shearers increased. They caused numerous failures of haulage units causing very high financial losses.…”

Section: Fig 6 Wear Of Teeth In Wheels and Toothed Barsmentioning

confidence: 99%

A Generation of Innovative Technical Ideas and Solutions as an Important Component of the KOMAG Strategy

Malec

Stańczak

2020

Multidisciplinary Aspects of Production Engineering

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The article presents some strategic aspects of the KOMAG Institute of Mining Technology in the field of creating innovative ideas and innovative technical solutions concerning machinery and devices for mining and preparation of minerals as regards their operational safety, productivity and reliability. Special attention is paid to a process of stimulating innovative ideas in a creative atmosphere, as KOMAG researchers and engineers are encouraged to be open-minded and to think in an unconventional way. Two examples of innovative technical solutions are described in detail, i.e. the water-and-air dust control system and the KOMTRACK haulage system for highly productive longwall systems of a new generation. The article contributes significantly to Innovation Engineering which is an important component of Production Engineering in the scope of generating and implementing innovative solutions. The authors presented an ecosystem of innovations, describing several methods of creating innovative ideas. The article concentrates on a role of Polish research institutes which play a key role in creating and implementing innovative solutions, bridging science and industry. Due to an analysis of different methods of generating innovative technical ideas and solutions, it can be concluded that an idea and a need of generating an innovative solution may appear in the research institute or at the industrial partner’s organization. In the case of the KOMAG multi-year experience and practice industrial partners include not only producers of mining machinery and equipment, but also representatives of mines of minerals. In general an innovative idea is generated in the result of an inspiration from the business environment and then it is transformed into an innovative product or service. The article contains the authors’ practical recommendations as regards a creation of innovative technical solutions. It is ended with a summary of general character and with some final conclusions.

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“…The poor working environment and high working intensity of shearers result in many serious problems. Many researchers have conducted studies on the cutting performance of picks [2][3][4] and drums and the reliability of traction units [5][6][7]. Due to the widespread mining of coal due to industrialization, the reservation of thick and medium-thick coal seams, which are less difficult to mine, is gradually decreasing, and the thin coal seams with a rich reservation have attracted increasing attention.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Effect of Drum Barrel on Coal-Loading Performance of Thin-Coal-Seam Shearer Machines

et al. 2022

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Thin-coal-seam shearer mining efficiency is seriously restricted by the poor loading performance of the drum. The loading of the drum to the cracked coal lumps is based on a screw-conveying mechanism, and its loading performance is influenced by many structural parameters, including drum width, helical angle, axial tilt angle, number of blades and form and diameter of the barrel. The barrel diameter directly influences the drum envelope zone’s capacity, and its influence on loading performance is not yet clear. Therefore, this work first compared the drum-loading results between experiments and numerical modeling, and the results proved that the application of the discrete element method (DEM) to the modeling drum loading process is feasible and the results are reliable. Secondly, the influence of barrel diameter on particles’ axial velocity, loading rate and web depth was studied using the ejection and pushing modes. The results showed that the particles’ axial velocity has a noticeable impact on loading rate under ejection loading conditions, and the loading rate first increases and then decreases with the increase in barrel diameter. When the diameter is less than 700 mm in drum-pushing modes, the particles’ axial velocity plays an important role on drum loading; the filling level has an obvious impact on loading performance when the barrel diameter is larger than 700 mm. The drum loading ejection rate is 25% higher than that of pushing mode, which is due to the loading rate of particles located in a web depth from 300 to 600 mm. The influence of barrel diameter on loading performance using drum ejection is more obvious than that in pushing mode. The results provide a reference for drum structural design to some extent.

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Simulation tests of new solution of the longwall shearer haulage system

Cited by 6 publications

References 0 publications

Computer-Aided Selection of the Stabilising System Parameters of the Mobile Transport and Assembly Manipulator in Mining Excavations

Computer-Aided Selection of the Stabilising System Parameters of the Mobile Transport and Assembly Manipulator in Mining Excavations

A Generation of Innovative Technical Ideas and Solutions as an Important Component of the KOMAG Strategy

Numerical Investigation of Effect of Drum Barrel on Coal-Loading Performance of Thin-Coal-Seam Shearer Machines

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