TY - GEN A1 - Schneider, Robert A1 - Simon, Sylvio A1 - Rieder, Thomas A1 - Fritsch, Tim A1 - Hernschier, Stephan A1 - Magister, Jan ED - Katterfeld, André ED - Krause, Friedrich ED - Fottner, Johannes ED - Günthner, Willibald A. ED - Pfeiffer, Dagmar T1 - Evaluierung von geeigneten Grenzwerten für die axiale Verschiebbarkeit (Axialspiel) bei Tragrollen ab einer Lagergröße von 6308 und Vorstellung eines neuartigen Axialspielprüfgerätes T2 - 25. Fachtagung Schüttgutfördertechnik 2021, Computersimulation – Organisation – Virtualisierung – Innovation – Digitalisierung, 22. und 23. September 2021 in Magdeburg N2 - Umfassende Untersuchungen von Lagerausfällen bei Tragrollen mit einer Lagergröße ab über 6306 ergaben zu geringe Werte für das Axialspiel, welche sich als Schadensursache herausstellten. Da in der DIN 22112 Teil 2 lediglich Grenzwerte für die axiale Verschiebbarkeit für Tragrollen bis zu einer Lagergröße 6306 aufgeführt werden, war eine Bewertung von Tragrollen mit größeren Lagern im Sinne der Qualitätskontrolle bisher nicht möglich. Ausgehend von den Schadensbildern werden die theoretischen Zusammenhänge in Bezug auf den Lagerverschleiß erörtert. In Zusammenhang mit den wirkenden Belastungen auf die Tragrollen werden geeignete Grenzwerte für die axiale Verschiebbarkeit ausgearbeitet, welche die LEAG (Lausitz Energie Bergbau AG) in die aktuellen Lieferanforderungen für Tragrollen aufnahm. Weiterhin wird ein Axialspielprüfgerät vorgestellt, welches im Vergleich zu der vorgestellten Messeinrichtung aus der DIN 22112 Teil 3 präzisere Messergebnisse unabhängig von dem Achsgewicht der jeweiligen Tragrollen liefert. KW - Axialspiel KW - Axialspielprüfgerät KW - Tragrollenprüfstand KW - Tragrolle KW - Gurtförderanlage Y1 - 2021 SN - 978-3-948749-04-0 U6 - https://doi.org/10.25673/36794 SP - 111 EP - 128 PB - Universitätsverlag CY - Magdeburg ER - TY - GEN A1 - Simon, Sylvio A1 - Taeschner, Dirk A1 - Rieder, Thomas A1 - Schneider, Robert A1 - Hernschier, Stephan A1 - Magister, Jan A1 - Fritsch, Tim A1 - Abbasov, Ilgar A1 - Turabov, Dashqin A1 - Globa, Svetlana T1 - Investigation in characteristics of belt conveyors and their idler rollers for coal-fired power plants T1 - Исследования характеристик ленточных конвейеров и их несущих роликов для угольных электростанций T2 - Safety and Reliability of Power Industry N2 - Belt conveyors are highly efficient systems used in mining and other industries to transport bulk materials, mainly brown coal and overburden, over distances ranging from short distances to several kilometres. For technical reasons, their operation is associated with noise emissions. During inspections and maintenance this can lead to increased noise exposure of employees. In the vicinity of residential buildings or in areas needing protection, exceeding the emission limits can lead to a temporary restriction of the operation of these high performance installations. Measures are required to reduce the noise impact primarily at the source or in the immediate vicinity. The acoustic and mechanical parameters are investigated on a test bench at the Technical University of Brandenburg (BTU) Cottbus-Senftenberg as part of the drive assembly tests in cooperation with LEAG. The stages of these tests are: Run-up test. In this test the supporting roller is accelerated under test load to a circumferential speed of 10 m/s and the sound pressure level is recorded. This makes it possible to calculate the sound emission as a function of the peripheral speed; Recording the geometry of the idler gear. An accurate description of the geometry of the idler housing allows conclusions to be drawn about the possible causes of excitation. The defined characteristics serve to quantify the acoustic effect of the driven rollers and derive specifications for use in belt conveyor systems. Based on the special requirements to the planned belt conveyor system, an adapted selection of low-noise idler rollers can be made at an early stage on the basis of specified parameters and confirmed test results. KW - belt conveyor KW - noise reduction KW - test stand KW - sound pressure level Y1 - 2021 U6 - https://doi.org/10.24223/1999-5555-2021-14-3-125-133 SN - 2542-2057 SN - 1999-5555 VL - 14 IS - 3 SP - 125 EP - 133 ER - TY - GEN A1 - Schneider, Robert A1 - Danneberg, Nina A1 - Rieder, Thomas A1 - Fritsch, Tim A1 - Hernschier, Stephan A1 - Magister, Jan T1 - Presentation of a new type of axial clearance testing device and evaluation of suitable limit values for the axial displaceability rollers with a bearing size of 6308, 6310 and 6312 T2 - “Machine-building and Energy : New Concepts and Technologies” International Scientific-practical Conference materials N2 - In the following, the results of the investigations on rollers with bearing failures from a bearing size above 6308 are presented. The values for the axial clearance were too low, which turned out to be the cause of the damage. DIN 22112 part 2 only lists limit values for the axial displacement of rollers up to a bearing size of 6306. An evaluation of idlers with larger bearings in terms of quality was not possible until now. Based on the results, a new axial test device was developed and comparative tests were carried out on the rollers using the test device from DIN 22112 Part 3. KW - Axial displaceability rollers KW - Bearing KW - Belt conveyor KW - Bulk materials Y1 - 2021 UR - https://www.researchgate.net/publication/392130645_Machine-building_and_Energy_New_Concepts_and_Technologies_International_Scientific-practical_Conference_MATERIALS SP - 45 EP - 47 ER - TY - GEN A1 - Rieder, Thomas A1 - Hernschier, Stephan A1 - Magister, Jan A1 - Fritsch, Tim A1 - Täschner, Dirk T1 - Unbalance and noise of rollers on conveyor belts T2 - “Machine-building and Energy : New Concepts and Technologies” International Scientific-practical Conference materials N2 - The further investigation of the effect of unbalance on the sound emission of a conveyor belt roller uses the help of defined adhesive strips that simulate caked material. The unbalance resulting from the adhesive strip becomes "balanced" with a second adhesive strip that is offset by 180° on the roller surface. The proof of a geometry-related excitation to sound radiation is then provided by a theoretically expected level increase of 3 dB. Depending on the rotational frequency, the change in geometry of the two adhesive strips doubles the excitation. For geometry-related changes and the peripheral speed of the test roller selected for the comparison the conditions must be constant. KW - Sound emission KW - Conveyor rollers KW - Unbalance KW - Conveyor belts Y1 - 2021 UR - https://www.researchgate.net/publication/392130645_Machine-building_and_Energy_New_Concepts_and_Technologies_International_Scientific-practical_Conference_MATERIALS SP - 42 EP - 44 ER -