ISSN 0536-1028 (Print)              ISSN 2686-9853 (Online)  

Teliman I. V. Rationale for pit hydraulic excavator design and operating parameters-lever hydraulic mechanisms. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 7: 132–137 (In Russ.). DOI: 10.21440/0536-1028-2019-7-132-137

Introduction. It is shown that the main executive mechanisms of the pit hydraulic excavator (mechanisms for turning the boom, turning the handle and turning the bucket) are hydro-mechanical units in which the engines (hydraulic cylinders) are an integral part of the lever-hydraulic mechanisms. Research aim is to improve the efficiency of hydraulic excavator operation. Research methodology. The presence of a kinematic connection between the engine (hydraulic cylinder rod) and the links of the lever-hydraulic mechanism determines certain relations between the parameters of the engine and the power parameters implemented on the driven link (boom, handle and bucket) – kinematic and dynamic transfer functions. On the basis of the main mechanisms functioning simulation model, expressions for definition of transfer functions are received. Results. It is established that there are rational values of the dynamic transfer functions of the main mechanisms at which the correspondence between the energy-power parameters realized at the driven links and the mode of loading of the driven links is achieved. Summary. Synthesis of design schemes of the main mechanisms with rational values of dynamic transfer functions will allow to exclude an overload of engines and, finally, to increase energy efficiency of hydraulic excavator functioning.

Key words: quarry hydraulic excavator; main executive mechanisms; kinematic and dynamic transfer functions of mechanisms.



1. Borshch-Komponiets L. V. The method of pit hydraulic excavators efficient assessment. Gornaia promyshlennost = Mining Industry Journal. 1996; 1: 29–37. (In Russ.) 2. Vinitskii K. E. The exploitation of new-generation hydraulic excavators at opencast mining. Gornaia promyshlennost = Mining Industry Journal. 1998; 1: 30–36. (In Russ.) 3. Komissarov A. P., Lautenshleiger A. A., Suslov N. M. Estimation of hydraulic excavator implements power parameters. Tiazheloe mashinostroenie = Heavy Engineering. 1991; 8: 25–29. (In Russ.) 4. Bules P. Operating efficiency of pit excavators with hydraulic drive of main mechanisms. Gornaia promyshlennost = Mining Industry Journal. 2014; 6 (118): 36–37. (In Russ.) 5. Visbek R., Kazakov V. A., Udachina T. E., Khaspekov P. R. On the effective use of hydraulic excavators. Gornaia promyshlennost = Mining Industry Journal. 1998; 5: 25–29. (In Russ.) 6. Dudczak A. Excavators: theory and design. Warsaw: PWN, 2000. 7. Geu Flores F., Kecskemethy A., Pottker A. Workspace analysis and maximal force calculation of a face-shovel excavator using kinematical transformers. In: 12th IFToMM World Congress, Besancon, June 18–21, 2007. 6 p. 8. Frimpong S., Нu Y., Chang Z. Perfomance simulation of shovel excavators for earthmoving operations. In: Summer in computer simulation conference (SCSC/03). 2003. Р. 133–138. 9. Hall A. Characterizing the operation of a large hydraulic excavator. Master Diss. School of Engineering the University of Queensland, Brisbane, Australia, 2002. 150 p. 10. Park B. Development of a virtual reality excavator simulator: a mathematical model of excavator digging and a calculation methodology. PhD Diss. Virginia Polytechnic Institute and State University. Blackburg, Virginia, USA, 2002. 223 p. 11. Rath H. Development of Hydraulic for Quarring Applications. Pt. 1. Mine & Quarry. 1987. P. 26–30. 12. Komissarov A. P., Shestakov V. S. A simulation model operation working equipment hydraulic shovel. Gornoe oborudovanie i electromehanika = Mining Equipment and Electromechanics. 2013; 8: 20–24. (In Russ.) 13. Komissarov A. P., Lagunova Iu. A., Shestakov V. S. Between constructive and regime parameters hydraulic operating equipment excavators. Gornoe oborudovanie i electromekhanika = Mining Equipment and Electromechanics. 2014; 11: 9–14. (In Russ.) 14. Pobegailo P. A. Powerful single-bucket hydraulic excavators. Implements basic geometric parameters selection at the early stages of design. Moscow: Lenand Publishing; 2014. (In Russ.) Received 12 April 2019



This email address is being protected from spambots. You need JavaScript enabled to view it.

Мы индексируемся в: