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Analysis of load unevenness of chain conveyor’s driving motors on the basis of numerical simulations

100%

Świder J. , Herbuś K. , Szewerda K.

2015

tom Vol. 73, nr 2

165--175

Purpose: Analysis of impact of extension degree of a telescopic trough installed on a drive end of a chain conveyor as well as time of conveyor start up on load unevenness of electric motors of conveyor’s drives. Design/methodology/approach: Analysis of load unevenness of electric motors of a chain conveyor was made basing on the current mean values of electric motors and mean driving torques of driving drums. Time curves were obtained from numerical simulation of operation of the 100 meters long chain conveyor of E260 trough profile and equipped with two 34x126 chains. Findings: The analysis has shown purposefulness of development of the algorithm to control the conveyor operation improving its drives cooperation. Research limitations/implications: Due to impossibility of carrying out tests in real conditions, a model of the conveyor was used for numerical simulations of the selected criteria operational states. The model was verified by comparison of the numerical simulation results with the results obtained on the testing facility located in Kopex Machinery in Tarnowskie Góry, Poland. The developed model will be used to verify the conveyor’s control algorithm. Originality/value: Numerical simulations of the conveyor operation were made in co-simulation technique integrating the software environment used in analysis of multi-body systems with MatLab Simulink software. Development of such integration will enable testing the functionality of the conveyor’s control algorithm at changeable initial conditions and different states of conveyor operation.

Unification of Equipment for Transporting People, Coal and Materials Produced by Jastrzębskie Zakłady Remontowe Sp. z o. o. and Used in the Mines of the JSW Capital Group

84%

Dyczko A. , Rychter R. , Bosowski A. , Konsek J.

New Trends in Production Engineering

2020

tom Vol. 3, Iss. 1

303--314

The publication presents the assumptions of the unification process of machines and equipment produced by Jastrzębskie Zakłady Remontowe Sp. z o. o. and operating at the coal mines of the JSW Capital Group. It outlines a solution adopted by JZR Sp. z o. o. addressing this issue. The authors identify the potential benefits of the process to the entire Jastrzębska Spółka Węglowa Capital Group, but they also mention the risks that may arise during its implementation. The publication also presents the first results of the unification, observed on the basis of the unified equipment and machinery of the coal clearance system for transporting people, coal and materials, which has already been put into operation in underground mining excavations. It also includes a chapter devoted to the influence of the unification on the development of “technical thought,” i.e. on the innovativeness of the equipment for transporting people, coal and materials newly produced by Jastrzębskie Zakłady Remontowe Sp. z o. o. which are to be implemented in the near future. New, innovative solutions are presented, which were introduced both in the unified transport devices such as chain and belt conveyors and in devices cooperating with them, i.e. lump breakers, pushing devices and other accessory equipment for the conveyors.

Czy empiryczna metoda wymiarowania może zapewnić wzrost niezawodności i żywotności łańcuchów górniczych?

84%

Philipp G. , Kandzia R.

Przegląd Górniczy

2020

tom T. 76, nr 6

25--34

Wymiarowanie łańcuchów dla przenośników zgrzebłowych stosowanych w wyrobiskach ścianowych bazuje na założeniu uruchomiania zablokowanego przenośnika przy pełnym wykorzystaniu momentu maksymalnego zastosowanych silników. Autorzy analizują obraną metodykę, postulując przyjęcie korekt, których celem jest zwiększenie niezawodności i żywotności łańcuchów górniczych.

The dimensional design of chains intended for armoured coal-face conveyors has traditionally been based on the imagined operating scenario of starting-up a stalled conveyor using the breakdown torque of the motors. The authors analyse this method and suggest to attain some adjustments in order to increase the operational reliability and the service life of mining chains.

Analiza stosowanych systemów transportu popiołu z odpylaczy spalin w kotłach energetycznych i ciepłowniczych z paleniskami rusztowymi

34%

Janik K. , Janik I. , Janik A. , Rataj Z. L.

Instal

2019

tom nr 12

15--21

W artykule przeprowadzono analizę stosowanych przenośników w systemach odbioru i transportu pyłu z kotłów z paleniskiem rusztowym w energetyce przemysłowej i ciepłowniczej. Zwrócono uwagę na konstrukcję najczęściej stosowanych rodzajów przenośników, ich parametry konstrukcyjne i eksploatacyjne. Dokonano oceny porównawczej zużycia energii elektrycznej do napędu urządzeń. Przeprowadzona analiza może być pomocna przy podejmowaniu decyzji techniczno-finansowych w ww. zakresie.

This paper analyzes the conveyors used in dust collection and transport systems from grate boilers in industrial and heating energy. Attention was paid to the construction of the most commonly used types of dust conveyors, their construction and operational parameters. A comparative assessment was made of electricity consumption for the drive of the equipment. The analysis helps in making technical and financial decisions.