From 'a priori' to 'a posteriori' static stability of the slewing superstructure of a bucket wheel excavator
Апстракт
The complexity of the slewing superstructure (SS) balancing problem derives from the changeability of its geometric configuration, the complexity of working conditions as well as multiple limitations of the possible set of solutions. Having in mind the fact that the existing reference literature does not fully specify the procedure of static stability proof, the aforementioned procedure is presented in detail for the first time in this paper. A major contribution is represented in the classification of the slewing superstructure models into two groups which were named: the 'a priori' model (designed image of the SS) and the 'a posteriori' model (actual image of the SS). The fundamental stages of the 'a posteriori' model development method are presented in the paper. The transformation and validation of the calculation model 'a priori' to the calculation model 'a posteriori' was conducted on the basis of weighing results. A calculation of the basic parameters of the bucket wheel excavat...or (BWE) superstructure was conducted for both analyzed models by using the in-house developed software. The 'a posteriori' models provide a reliable calculation of the SS static stability and may be used not only for static stability proof of the machine as a whole, but also for load analysis of substructures and elements of BWE and related surface mining machines, such as spreaders. Besides that, the previously mentioned models are of extreme importance for a successful and reliable exploitation and maintenence of the machine since they present the basis for adjustment and control of limiting winch rope forces values, periodic control of mass and center of gravity position, as well as for a possible reconstruction which would be conducted in order to realize better customization of the machine versus operating conditions.
Кључне речи:
static stability proof / slewing superstructure / bucket wheel excavatorИзвор:
Eksploatacja I Niezawodnosc-Maintenance and Reliability, 2018, 20, 2, 190-206Издавач:
- Polish Maintenance Soc, Lublin
Финансирање / пројекти:
DOI: 10.17531/ein.2018.2.04
ISSN: 1507-2711
WoS: 000428453100004
Scopus: 2-s2.0-85044480391
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Bošnjak, Srđan AU - Gnjatović, Nebojša AU - Milenović, Ivan Lj. PY - 2018 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2922 AB - The complexity of the slewing superstructure (SS) balancing problem derives from the changeability of its geometric configuration, the complexity of working conditions as well as multiple limitations of the possible set of solutions. Having in mind the fact that the existing reference literature does not fully specify the procedure of static stability proof, the aforementioned procedure is presented in detail for the first time in this paper. A major contribution is represented in the classification of the slewing superstructure models into two groups which were named: the 'a priori' model (designed image of the SS) and the 'a posteriori' model (actual image of the SS). The fundamental stages of the 'a posteriori' model development method are presented in the paper. The transformation and validation of the calculation model 'a priori' to the calculation model 'a posteriori' was conducted on the basis of weighing results. A calculation of the basic parameters of the bucket wheel excavator (BWE) superstructure was conducted for both analyzed models by using the in-house developed software. The 'a posteriori' models provide a reliable calculation of the SS static stability and may be used not only for static stability proof of the machine as a whole, but also for load analysis of substructures and elements of BWE and related surface mining machines, such as spreaders. Besides that, the previously mentioned models are of extreme importance for a successful and reliable exploitation and maintenence of the machine since they present the basis for adjustment and control of limiting winch rope forces values, periodic control of mass and center of gravity position, as well as for a possible reconstruction which would be conducted in order to realize better customization of the machine versus operating conditions. PB - Polish Maintenance Soc, Lublin T2 - Eksploatacja I Niezawodnosc-Maintenance and Reliability T1 - From 'a priori' to 'a posteriori' static stability of the slewing superstructure of a bucket wheel excavator EP - 206 IS - 2 SP - 190 VL - 20 DO - 10.17531/ein.2018.2.04 ER -
@article{ author = "Bošnjak, Srđan and Gnjatović, Nebojša and Milenović, Ivan Lj.", year = "2018", abstract = "The complexity of the slewing superstructure (SS) balancing problem derives from the changeability of its geometric configuration, the complexity of working conditions as well as multiple limitations of the possible set of solutions. Having in mind the fact that the existing reference literature does not fully specify the procedure of static stability proof, the aforementioned procedure is presented in detail for the first time in this paper. A major contribution is represented in the classification of the slewing superstructure models into two groups which were named: the 'a priori' model (designed image of the SS) and the 'a posteriori' model (actual image of the SS). The fundamental stages of the 'a posteriori' model development method are presented in the paper. The transformation and validation of the calculation model 'a priori' to the calculation model 'a posteriori' was conducted on the basis of weighing results. A calculation of the basic parameters of the bucket wheel excavator (BWE) superstructure was conducted for both analyzed models by using the in-house developed software. The 'a posteriori' models provide a reliable calculation of the SS static stability and may be used not only for static stability proof of the machine as a whole, but also for load analysis of substructures and elements of BWE and related surface mining machines, such as spreaders. Besides that, the previously mentioned models are of extreme importance for a successful and reliable exploitation and maintenence of the machine since they present the basis for adjustment and control of limiting winch rope forces values, periodic control of mass and center of gravity position, as well as for a possible reconstruction which would be conducted in order to realize better customization of the machine versus operating conditions.", publisher = "Polish Maintenance Soc, Lublin", journal = "Eksploatacja I Niezawodnosc-Maintenance and Reliability", title = "From 'a priori' to 'a posteriori' static stability of the slewing superstructure of a bucket wheel excavator", pages = "206-190", number = "2", volume = "20", doi = "10.17531/ein.2018.2.04" }
Bošnjak, S., Gnjatović, N.,& Milenović, I. Lj.. (2018). From 'a priori' to 'a posteriori' static stability of the slewing superstructure of a bucket wheel excavator. in Eksploatacja I Niezawodnosc-Maintenance and Reliability Polish Maintenance Soc, Lublin., 20(2), 190-206. https://doi.org/10.17531/ein.2018.2.04
Bošnjak S, Gnjatović N, Milenović IL. From 'a priori' to 'a posteriori' static stability of the slewing superstructure of a bucket wheel excavator. in Eksploatacja I Niezawodnosc-Maintenance and Reliability. 2018;20(2):190-206. doi:10.17531/ein.2018.2.04 .
Bošnjak, Srđan, Gnjatović, Nebojša, Milenović, Ivan Lj., "From 'a priori' to 'a posteriori' static stability of the slewing superstructure of a bucket wheel excavator" in Eksploatacja I Niezawodnosc-Maintenance and Reliability, 20, no. 2 (2018):190-206, https://doi.org/10.17531/ein.2018.2.04 . .