Belikov A.S., Shalomov V.A., Dolgopolova N.V., Ulitina M.Yu. SAFETY OF SPECIFIC JOBS PERFORMED IN EXTREMAL SITUATIONS WITH THE USE OF LIFTING-AND-SHIFTING MACHINES AND EQUIPMENT
- Details
- Parent Category: Geo-Technical Mechanics, 2016
- Category: Geo-Technical Mechanics, 2016, Issue 128
SAFETY OF SPECIFIC JOBS PERFORMED IN EXTREMAL SITUATIONS WITH THE USE OF LIFTING-AND-SHIFTING MACHINES AND EQUIPMENT
Belikov A.S., Shalomov V.A., Dolgopolova N.V., Ulitina M.Yu.
Belikov A.S., D.Sc. (Tech.), Professor,
Shalomov V.A., Ph.D. (Tech.), Associate Professor
(SHEI “PSACEA”)
Dolgopolova N.V., Ph.D. (Tech.), Senior Researcher
(A.N. Podgorny Institute for Mechanical
Engineering Problems of the NAS of Ukraine)
Ulitina M.Yu., Doctoral Student
(Regional state administration, Kharkоv)
Abstract. Today, in many countries of the world, practical calculations by standards are based on a criterion, in obedience to which it is required to escape unloading of anvil running wheels and to ensure positive pressure forces of the crane wheels acting on the rails of railway (or outriggers of auto-elevators / auto-stairs acting on the road coverage). In this regard, while calculating such loadings, it is necessary to apply certain safety factors. In the terms of the considered research of stability, traditional method for calculating forces of inertia causes certain doubt, as well as attributing of all of calculations to the dangerous state of object, which assumes reduction up to zero of the wheels/outriggers pressure on the railway foundation («unloading of wheels»). When pressure reaches zero value, an object not necessarily lose its stability. Some breakaway of the wheels from the foundation (rails / soil of earth) can occur, though crane / truck crane does not overturn. And, vice versa, though supporting elements (wheels or outriggers) are not unloaded, the object, at the certain moment of time, can potentially capsize (due to development of flutter processes). Therefore, correcting safety factors shall be correlated with actual state of stability loss, and shall be a subject of further significantly correct researches. By a similar considering it is possible to use at production of works on industrial areas and in the superficial complexes of coal mines.
Keywords: loss of stability, lifting-transport machines, emergency-recovery works, supporting elements of machines, theory of vibrations.
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About the authors
Belikov Anatoliy Serafimovich, Doctor of Technical Sciences, Professor, Life Safety Department of the State Higher Education Inststution «Pridneprovsk State Academy of Civil Engineering and Architecture» (SHEI PSACEA), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .
Shalomov Vladimir Anatoliyevich, Candidate of Technical Sciences, Associate Professor, Life Safety Department of the State Higher Education Inststution «Pridneprovsk State Academy of Civil Engineering and Architecture» (SHEI PSACEA), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Dolgopolova Natalia Vladimirovna, Candidate of Technical Sciences, Senior Researcher in Department of strength and optimization, A. N. Podgorny Institute of Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, Kharkov, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .
Ulitina Marina Yuryevna, Doctoral Student, Specialist in Department of science and education of Harkiv regional state administration, Kharkov, Ukraine, doctoral student, This email address is being protected from spambots. You need JavaScript enabled to view it. .