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1
Content available Longwall shearer’s haulage systems - a historical review. Part 1 – cable haulage systems
Korski Jacek
Mining Machines
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2021
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no. 1
17--27
EN
The longwall shearer haulage systems are an indispensable component of these machines. The technical solutions of the haulage systems have changed along with the evolving mining technique and the development of mechanization of the entire longwall system. The longwall technology development has also resulted in increasing length of the longwalls and also influenced the technical solutions of the longwall shearer haulage systems. Next reason for shearer’s haulage systems changes and improvement were expanding of acceptable conditions for LW use as inclination or geological disturbances. Implementation of mechanized roof supports and bidirectional cutting were next reasons for haulage systems development. This article is the first part of the historical review of solutions of the longwall shearers' chain haulage systems from the creation of the first shearers to the present day
PL
Systemy posuwu ścianowych kombajnów węglowych są niezbędnym zespołem tych maszyn. Rozwiązania techniczne systemów posuwu zmieniały się wraz z ze zmianą techniki urabiania i rozwojem mechanizacji całego systemu ściany. Rozwój technologii ścianowej spowodował także wzrost długości ścian i także wpłynął na techniczne rozwiązania systemów posuwu kombajnów ścianowych. Rosnące długości ścian i wzrastające wymagania wobec produktywności ścian węglowych powodowało zmiany i rozwój systemów posuwu kombajnów ścianowych. Dodatkowym czynnikiem wymuszającym zmiany tych systemów stanowiło rozszerzanie zakresu stosowania systemów ścianowych, w tym zakresu nachyleń. Wprowadzenie zmechanizowanych obudów ścianowych oraz dwukierunkowego urabiania kombajnami także było czynnikiem powodującym zmiany technicznych rozwiązań systemu posuwu kombajnów ścianowych. Artykuł stanowi pierwszą część historycznego przeglądu rozwiązań cięgnowych systemów posuwu kombajnów ścianowych od chwili powstania pierwszych kombajnów do czasów współczesnych.
2
Content available Longwall shearer haulage systems - a historical review. Part 2 – First cordless haulage systems solutions
Korski Jacek
Mining Machines
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2021
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no. 2
24--33
EN
Searching for cordless haulage systems started in early 50-ties of XX century. In semi-mechanized longwall faces in Germany and Hungary tracked narrow face cutter-loaders (first continuous miners) were used. Real trials began ten years later in Great Britain. First solutions described in this article were simply an adaptation of the existing Anderson’s or BJD’s single or double drum shearers. The main idea was to interfere to as less as possible extent with the shearer structure. After the first positive trials and experiences in British and French mines the first cordless solutions such as Rackatrack, Peratrak or ram propulsions were either developed or gone to the past. This article is a review of the first cordless shearer haulage systems.
3
Content available Longwall shearer haulage systems – a historical review. Part 3 – Chainless haulage systems with drive wheel and rack bar
Korski Jacek
Mining Machines
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2021
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no. 3
58--69
EN
Chainless shearer haulage systems with rack bar are currently the most popular group of this kind of solution. The first type of rack bar was captivated chain. In 70-ties great number of different solution of chainless haulage systems with drive wheel (sprocket or pin) and different rack bars were implemented. Afterwords some of them were abandoned for different reasons, but some are still in duty and under improvement. This article is the third and the last part of shearer haulage systems technical review, concentrated on chainless haulage system. Beginning from the british Rollrack with pin drive wheel and toothed rack bar through similar solutions with sprocket drive wheel in Europe and China and solutions with vertical or horizontal ladder type of rack bar is reflect technical development of shearer haulage system till contemporary solutions and trials of improvement.
4
Content available Designing process of a toothed segment of the KOMTRACK haulage system
Kalita Marek
New Trends in Production Engineering
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2019
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Vol. 2, Iss. 1
121--129
EN
The following stages of a designing process of the toothed haulage segment are presented in the article. The toothed segment, developed within the framework of the KOMTRACK project, is an element of an innovative haulage system for highly productive longwall complexes. The project, according to the Contract No. POIR.04.01.04-00-0068/17, realized by the consortium: KOMAG, AGH University of Science and Technology, Foundry Institute, Specodlew Innovative Enterprise of Foundry Engineering, Ltd. and Polish Mining Group, J.S.C., is co-financed with the means of the European Regional Development Fund. The toothed bar, made of toothed segments of the haulage system, works together with the track wheel of a shearer haulage unit. A distinguishing feature of the newly designed haulage system, in relation to the system used at present, is its flexibility enabling individual toothed segments to adapt to longitudinal and transverse curvatures of the longwall conveyor track, which guarantees a correct cooperation with the track wheel.
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