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Science and research

prevádzkové meranie pracovného strojaFaculty of Mechanical Engineering STU

Institute:            Institute of Transport Technology and Designing
Contact person:  prof. Ing. Ladislav Gulan, PhD., Ing. Gregor Izrael, PhD.
Contact:             +421 2 5729 6482, +421 2 5729 6460, +421 2 5729 6462
e-mail:                ladislav.gulan@stuba.sk, gregor.izrael@stuba.sk
web page:           http://www.sjf.stuba.sk/generate_page.php?page_id=3262


Description:

Laboratory of Mobile Working Machines is situated in area of Heavy Pavilion of Faculty of Mechanical Engineering STU Bratislava. One of the equipments of laboratory is stand for experimental measurement of loads of a loader working device of Locust L903 machine (Fig. 1). The equipment enables to provide static loading tests based on ISO 14 397-1 and ISO 14 397-2 standards. Loading of working device is realizes by hydraulic cylinders and aggregate producing pressure and flow rating similar to real machine (Fig. 2).  Response of loading as deformation is measured by strain gauges and apparatus NI Daq. Gauges are cemented at locations of greatest stress concentration. Beside stress analysis the equipment enables verification of working device kinematics in case of optimisation tasks. Hydraulic aggregate is applicable as power unit of several tested units of mobile working machines (e.g. modules of power train of mobile working machines).

 

Projects:

- APVV-0100-06 Research of Modular Platform for an Oriented Segment of Mobile Working Machines

- APVT-99-014304 Numerical simulation of konstruction loadability in range of high defformations and plasticity of materials with multi body contact based on safety regulations

- APVT-20-003102  Komplex interactiv dimensioning system for objektivisation of working machines modules

- VEGA 1/0301/12 Verification of Service Life Time of Significant Building Modules of Mobile Working Machines

 

Publications:

- Gulan, Ladislav - Mazurkievič, Izidor: Mobile working machines: Theory and methodology of design. - 1. vyd. - Bratislava: STU v Bratislave, 2009. - 180 s. -ISBN 978-80-227-3026-6

- Mazurkievič, Izidor - Gulan, Ladislav - Izrael, Gregor: Mobile working machines: Theory and design of basic modules. - 1. vyd. - Bratislava: Nakladateľstvo STU, 2013. - 301 s., 280 obr., 19 tab. s. - ISBN 978-80-227-3968-9

- Izrael, Gregor - Bukoveczky, Juraj - Gulan, Ladislav: Influence of nonstandard loads onto life of chosen modules of mobile working machines. In: Machine Design. - ISSN 1821-1259. - Vol. 3, No. 1 (2011), s. 13-16

- Slovák, Pavol - Gulan, Ladislav: Strength verification of a boom loader module. In: Annals of Faculty of Engineering Hunedoara - Journal of Engineering. - ISSN 1584-2673. - Tom XI, Fasc. 3 (2013), s. 37-40

- Jánošík, Ľudovít - Bukoveczky, Juraj - Gulan, Ladislav: Utilisation of load spectra in the process of simplified building machines tests design. In: Strojnícky časopis = Journal of Mechanical engineering. - ISSN 0039-2472. - Roč. 59, č. 3 (2008), s. 163-174

- Izrael, Gregor - Bukoveczky, Juraj - Gulan, Ladislav: Utilisation of modelling, stress analysis, kinematics optimisation, and hypothetical estimation of lifetime in the design process of mobile working machines. - DOI: 10.2478/v10228-011-0004-1. In: Scientific Proceedings Faculty of Mechanical Engineering STU Bratislava. - ISSN 1338-1954. - Vol. 19/2011. - Bratislava: Nakladateľstvo STU, 2011, s. 23-28

- Izrael, Gregor - Gulan, Ladislav - Bukoveczky, Juraj: Laboratory verification of most effective course of load boom. In: Sborník 39. mezinárodní konference kateder dopravních, manipulačních, stavebních a zemědělských strojů [elektronický zdroj] : Horní Bečva,ČR, 5.-6. 9. 2013. - Ostrava: VŠB-Technická univerzita Ostrava, 2013. - ISBN 978-80-248-3124-4. - CD-ROM, [6] s.

- Izrael, Gregor - Bukoveczky, Juraj - Gulan, Ladislav: Nonstandard operating load and their impact on the working life of selected modules of mobile working machines. In: Sborník přednášek 37. mezinárodní konference kateder dopravních, manipulačních, stavebních a zemědělských strojů : Brno /Česká republika/ 14.-15. 9. 2011. - Brno: Vysoké učení technické v Brně - Fakulta strojního inženýrství, 2011. -ISBN 978-80-214-4323-5. -S. 3-6

- Jánošík, Ľudovít - Izrael, Gregor - Bukoveczky, Juraj - Gulan, Ladislav: Utilisation of strain gauges readers by verification of basic technical parameters of mobile working machines prototypes. In: 34. ročník mezinárodní konference Kateder dopravních, manipulačních, stavebních a zemědělských strojů : Sborník příspěvků. - Kravaře/ČR/, 24.-26.9. 2008. - Ostrava: Vysoká škola báňská - Technická univerzita v Ostravě, 2008. - ISBN 978-80-248-1820-7. - nestr.

- Gulan, Ladislav - Bukoveczky, Juraj - Izrael, Gregor: Use of virtual electronic means of knowledge system for creation of modular structure of mobile working machines: Úžitkový vzor č. 6357, Dátum zápisu a sprístupnenia verejnosti: 20.11. 2012. - Banská Bystrica: Úrad priemyselného vlastníctva SR, 2012.

- Bukoveczky, Juraj - Gulan, Ladislav - Schmidtová, Carmen - Jánošík, Ľudovít - Mráz, Marián: Strain gauge measurement of telescopic boom. UTM 11.34. - Bratislava: STU v Bratislave SjF KČS, 2005. - 25 s.

- Bukoveczky, Juraj - Gulan, Ladislav - Izrael, Gregor - Pulkovník, Vladimír: Research of stress distribution and shape optimisation of working device a skid-steer. - Bratislava: STU v Bratislave SjF, 2011. - 21 s.

 

Cooperation with industry: 

  • IDČ Kovačič, s. r. o.:

- Strength control of positioners of a type series – adaptive handling equipment MZ 800, Katedra častí strojov SjF STU Bratislava. December 1999

  • PPS Group Detva, a. s.:

- Strength analysis of working device of HON 200Z, Ústav dopravnej techniky a konštruovania SjF STU, Bratislava 2011

  • CSM Tisovec, a. s.:

- Strain gauge measurement and evaluation of working load of telescopic boom UTM 11.34, Katedra častí strojov, Strojnícka fakulta STU v Bratislave, august 2005, Bratislava

  • WUSAM, a. s. Zvolen:

- Assessment methodology of modular designed mobile working machines, Katedra častí strojov SjF STU Bratislava, Bratislava, 1999

  • WAY Industries Krupina, a. s.:

- Strain gauge measurement of LOCUST L903, LOCUST L1203, LOCUST L1203 TELSPEED loaders, Ústav dopravnej techniky a konštruovania SjF STU, Bratislava 2008

- Research of stress distribution and shape optimization of working device a skid-steer, Ústav dopravnej techniky a konštruovania, Strojnícka fakulta STU v Bratislave, december 2011

 

Photos:

skusobny stend
Fig. 1. Experimental stand

hydraulicky agregat
Fig. 2. Hydraulic aggregate


Fig.: The operational measurement of the working machine