Temat: cutting drums - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Tests of loading efficiency of worm-type cutting drums in longitudinally inclined longwall working
Autorzy:: Wydro, T.
Powiązania:: https://bibliotekanauki.pl/articles/111202.pdf
Data publikacji:: 2018
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: laboratory tests
spoil loading
worm-type cutting drums
Opis:: This article presents the execution and results of tests of the loading efficiency of wormtype cutting drums as a function of the slope of a longwall working. The tests were carried out at various angles of longitudinal inclination of a longwall within a range of 0 degrees to 9 degrees along the strike. In real conditions, the separation of the two basic processes that take place during operation of a longwall shearer (i.e., milling and loading) is not possible; therefore, the research was carried out under laboratory conditions at the Department of Mining, Dressing, and Transport Machines at AGH University of Science and Technology in Krakow. The tests were carried out on a special station that allowed for the gradual change of the longitudinal and transverse slope of a longwall working. Based on the conducted tests, it was found that the inclination of a longwall working influences the loading efficiency; i.e., that, along with an increase in the angle of the longitudinal inclination, loading resistance increases while the loading efficiency decreases.
Źródło:: Mining – Informatics, Automation and Electrical Engineering; 2018, 56, 4; 65-73
2450-7326
2449-6421
Pojawia się w:: Mining – Informatics, Automation and Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Computer-aided support for the rapid creation of parametric models of milling units for longwall shearers
Autorzy:: Bołoz, Ł.
Castañeda, L. F.
Powiązania:: https://bibliotekanauki.pl/articles/409871.pdf
Data publikacji:: 2018
Wydawca:: STE GROUP
Tematy:: cutting drums
computer-aided support
units generator
unit load
parametric modelling
iLogic
Audodesk Inventor Professional
Opis:: The cutting drums are the basic working components of many mining machines. The article focuses on differences in the design of cutting drums depending on the expected working conditions. Then, the unique calculation procedure is presented which allows to determine the load on the unit by reducing the forces acting on a single pick, taking into account the picks bent on the cut-off disc. Until now, this has been omitted in the literature. The results of the calculations for the selected cutting drum performed in MATLAB are also presented. The further section proposes to use Autodesk Inventor Professional's iLogic Tool for quick modelling of cutting drums. The principles of creating parameterized models and compositions using programming elements in the form of iLogic scripts are presented. The articles presented a ready-made units generator, taking into account the possibility to determine values of selected numerical parameters of the unit: diameter, web, number of patches and cutting pitch. The generator also allows you to select the type of pick holders, conical pick types, as well as the choice of pick system for repositioning or matching picks.
Źródło:: Management Systems in Production Engineering; 2018, 4 (26); 193-199
2299-0461
Pojawia się w:: Management Systems in Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Impact of the Winding Angle of the Auger Blade on the Loading Process With Milling Auger Drums
Autorzy:: Wydro, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/2064322.pdf
Data publikacji:: 2020
Wydawca:: STE GROUP
Tematy:: longwall shearer
spoil loading
cutting drums
laboratory tests
kombajn ścianowy
ładowanie urobku
testy laboratoryjne
bęben tnący
Opis:: This publication addresses the impact of selected design parameters of milling auger cutting drums on the loading process, and above all the winding angle of the auger blade. The loading process is often referred to as an auxiliary process because the milling process is considered to be the dominant throughout the work of the cutting drum. The correct determination of the relationship between the mining process and the loading process allows to understand how the individual design and kinematic parameters of the mining drums and the mining machine on which they are installed affect each other. The publication discusses the problem of loading with milling cutting drums and ways to increase its efficiency. The research results of the loading process have been presented, affecting the efficiency of this process in the aspect of various angles of inclination of the auger blades. Based on the tests, conclusions have been formulated that allow for the possible selection of an appropriate winding angle for the auger blade, depending on the granulation of spoil.
Źródło:: New Trends in Production Engineering; 2020, 3, 1; 241--250
2545-2843
Pojawia się w:: New Trends in Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Projektowanie frezujących organów ślimakowych dla zwiększenia wychodu grubych sortymentów węgla
Designing of the worm-type cutting drums to increase the coarse-grained coal grade output
Autorzy:: Krauze, K.
Bołoz, Ł.
Wydro, T.
Powiązania:: https://bibliotekanauki.pl/articles/165387.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:: organy ślimakowe
projektowanie organów ślimakowych
sortyment urobku
kombajny ścianowe
worm-type cutting drums
designing of worm-type cutting drum
winning grade
longwall shearers
Opis:: Urabianie mechaniczne poprzez frezowanie węgla kamiennego w wyrobiskach ścianowych powoduje powstawanie znacznych ilości frakcji najmniej pożądanej, czyli miału i pyłu. Skutkuje to obniżeniem wartości pozyskanego minerału, wzrostem zapylenia i niebezpieczeństwa wybuchu pyłu. Ponadto zachodzi konieczność zastosowania skutecznego zraszania. Pojawienie się w urobku większej ilości sortymentu grubszego umożliwia zmniejszenie wspomnianych wcześniej niedogodności, co skutkuje zwiększeniem efektywności wybierania. jest to możliwe, gdy proces doboru parametrów konstrukcyjnych i kinematycznych frezujących organów ślimakowych zostanie przeprowadzony prawidłowo z uwzględnieniem tego aspektu. Zaproponowana procedura doboru tych parametrów, poparta eksperymentem w warunkach przemysłowych, umożliwia osiągnięcie zamierzonego celu, jakim jest zwiększenie ilości frakcji grubszych, przy urabianiu frezującymi organami ślimakowymi.
Hard coal mechanical cutting within longwall excavations is accompanied by formation of dispensable coal fractions, i.e. fine coal and dust. This results in reduction of the exploited material value and dustiness, what increases the hazard of the dust explosion. Moreover, application of suitable water spraying system is necessary. Occurrence of big amount of the coarser grade winning allows to reduce the mentioned disadvantages which in turn results in the output efficiency improvement. That is possible only if the process of selection of construction and kinematical parameters of the worm-type cutting drums is conducted properly. The proposed procedure of the selection of these parameters aided with experiment in industrial conditions allows to obtain the targeted purpose, i.e. increase of the volume of coarse fractions by winning with the use of the worm-type cutting drums.
Źródło:: Przegląd Górniczy; 2016, 72, 6; 16-22
0033-216X
Pojawia się w:: Przegląd Górniczy
Dostawca treści:: Biblioteka Nauki

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