‘Design-in’ Faults - the Reason for Serious Drawbacks in High Capacity Bucket Wheel Excavator Exploitation
Apstrakt
This paper describes the failure analysis results of undercarriage and superstructure vital
subassemblies, which led to periodical stoppage and eventually total collapse of the bucket wheel excavator (BWE) SchRs 1760, once the machine with the highest theoretical capacity operating on the overburden excavation in open pit mine “Kolubara” - Serbia. It is conclusive that the main cause of two wheel bogie structural failure, described as case 1, is its insufficient strength during the action of lateral forces which are dominantly applied during the BWE curve travel. Case 2 analyses the support structure of portal tie-rods failure which was the consequence of superposition of the negative effects caused by inadequate shaping and dimensioning of the support assembly for given load conditions, as well as influences of defects of the metal weld structure. Both of the described failures are caused by the design-in faults.
Ključne reči:
bucket wheel excavator / failure analysis / finite element analysisIzvor:
Proceedings of the The Eighth Triennial International Conference Heavy Machinery - HM 2014, 2014, A.177-A.182Izdavač:
- SaTCIP
Finansiranje / projekti:
- Održivost i unapređenje mašinskih sistema u energetici i transportu primenom forenzičkog inženjerstva, eko i robust dizajna (RS-MESTD-Technological Development (TD or TR)-35006)
Kolekcije
Institucija/grupa
Mašinski fakultetTY - CONF AU - Gnjatović, Nebojša AU - Milojević, Goran AU - Milenović, Ivan Lj. AU - Stefanović, Aleksandar Z. PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4914 AB - This paper describes the failure analysis results of undercarriage and superstructure vital subassemblies, which led to periodical stoppage and eventually total collapse of the bucket wheel excavator (BWE) SchRs 1760, once the machine with the highest theoretical capacity operating on the overburden excavation in open pit mine “Kolubara” - Serbia. It is conclusive that the main cause of two wheel bogie structural failure, described as case 1, is its insufficient strength during the action of lateral forces which are dominantly applied during the BWE curve travel. Case 2 analyses the support structure of portal tie-rods failure which was the consequence of superposition of the negative effects caused by inadequate shaping and dimensioning of the support assembly for given load conditions, as well as influences of defects of the metal weld structure. Both of the described failures are caused by the design-in faults. PB - SaTCIP C3 - Proceedings of the The Eighth Triennial International Conference Heavy Machinery - HM 2014 T1 - ‘Design-in’ Faults - the Reason for Serious Drawbacks in High Capacity Bucket Wheel Excavator Exploitation EP - A.182 SP - A.177 UR - https://hdl.handle.net/21.15107/rcub_machinery_4914 ER -
@conference{ author = "Gnjatović, Nebojša and Milojević, Goran and Milenović, Ivan Lj. and Stefanović, Aleksandar Z.", year = "2014", abstract = "This paper describes the failure analysis results of undercarriage and superstructure vital subassemblies, which led to periodical stoppage and eventually total collapse of the bucket wheel excavator (BWE) SchRs 1760, once the machine with the highest theoretical capacity operating on the overburden excavation in open pit mine “Kolubara” - Serbia. It is conclusive that the main cause of two wheel bogie structural failure, described as case 1, is its insufficient strength during the action of lateral forces which are dominantly applied during the BWE curve travel. Case 2 analyses the support structure of portal tie-rods failure which was the consequence of superposition of the negative effects caused by inadequate shaping and dimensioning of the support assembly for given load conditions, as well as influences of defects of the metal weld structure. Both of the described failures are caused by the design-in faults.", publisher = "SaTCIP", journal = "Proceedings of the The Eighth Triennial International Conference Heavy Machinery - HM 2014", title = "‘Design-in’ Faults - the Reason for Serious Drawbacks in High Capacity Bucket Wheel Excavator Exploitation", pages = "A.182-A.177", url = "https://hdl.handle.net/21.15107/rcub_machinery_4914" }
Gnjatović, N., Milojević, G., Milenović, I. Lj.,& Stefanović, A. Z.. (2014). ‘Design-in’ Faults - the Reason for Serious Drawbacks in High Capacity Bucket Wheel Excavator Exploitation. in Proceedings of the The Eighth Triennial International Conference Heavy Machinery - HM 2014 SaTCIP., A.177-A.182. https://hdl.handle.net/21.15107/rcub_machinery_4914
Gnjatović N, Milojević G, Milenović IL, Stefanović AZ. ‘Design-in’ Faults - the Reason for Serious Drawbacks in High Capacity Bucket Wheel Excavator Exploitation. in Proceedings of the The Eighth Triennial International Conference Heavy Machinery - HM 2014. 2014;:A.177-A.182. https://hdl.handle.net/21.15107/rcub_machinery_4914 .
Gnjatović, Nebojša, Milojević, Goran, Milenović, Ivan Lj., Stefanović, Aleksandar Z., "‘Design-in’ Faults - the Reason for Serious Drawbacks in High Capacity Bucket Wheel Excavator Exploitation" in Proceedings of the The Eighth Triennial International Conference Heavy Machinery - HM 2014 (2014):A.177-A.182, https://hdl.handle.net/21.15107/rcub_machinery_4914 .