Optimal service term of the bridge cranes

• Autorzy: Kovalenko V. , Vishnevetsky S. , Brewczyński D. , Tora G.
• Języki publikacji: EN

Abstrakty

EN

The questions of the rational/optimal service term of the warehouse bridge cranes on the exploitation and projection stages are observed. The method of the residual crane resource’s definition by the criterion of the specific reduced responses is suggested. On the stage of the crane projection, the forecasting of the warehouse cranes’ resource in coordination with their constructive parameters is expedient. The existing task has main aspects: recognition of the residual crane resource and definition of the project crane resource. In course of time in the massive of the sample from the low carbon steel occur changes: grows firmness, equalize the internal tensions, little internal cracks “overgrow”, sometimes the groups of little cracks create macrocracks. This are a diffusion action. The definition of the rational constructive parameters is being carried out on the base of the work processes’ mathematical modelling. On the base of modelling is defined the size of the residual deflection of the main beam that is formed during one work crane cycle considering the action of the main beams’ free vibrations in the processes of start and braking considering the factor of the attenuation of those vibrations. In result of the modelling, we receive the microscopic size of the residual deflection, formed during one work cycle. On the base of the multisession modelling is noticed that the crane resource can be prolonged on 20-50%.

Słowa kluczowe

EN

bridge cranes; resource; modelling; constructive parameters

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 4
• Strony: 169--176
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Kovalenko V.

• National Technical University “Kharkov Polytechnic Institute” Engineering Faculty, Cathedra “Handling machinery” Frunze Street 21, Kharkov 61002, Ukraine tel.: [phone]

autor

Vishnevetsky S.

• National Technical University “Kharkov Polytechnic Institute” Engineering Faculty, Cathedra “Handling machinery” Frunze Street 21, Kharkov 61002, Ukraine tel.: [phone]

autor

Brewczyński D.

• Cracow University of Technology Faculty of Mechanical Engineering Institute of Machine Design Jana Pawła II Av. 37, 31-864 Krakow, Poland tel.: [phone], fax: [phone]

autor

Tora G.

• Cracow University of Technology Faculty of Mechanical Engineering Institute of Machine Design Jana Pawła II Av. 37, 31-864 Krakow, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Rabotnov, N., Creep of Structural Elements, Oxford: Pergamon Press, 1991.
• [2] Gertsriken, S. D., Dekhtyar, I. J., Diffusion in metals and alloys in the solid phase, Bell, London 1960.
• [3] Solntsev, N., Metallurgy and metal technology, Metallurgy, Moscow 1988.