Study of the technical parameters dynamics influence on operational performance of hydraulic single-bucket excavators

Introduction. The development of automobile and road construction is a priority in the Russian economy. Timely putting construction projects in commission increases the requirements for planning of execution mechanized works. The operation of transport and technological machines in construction processes for a long time leads to a decrease in their potential capabilities, including operational productivity. The purpose of the proposed article is to improve the method of calculating the performance of a single-bucket hydraulic excavator (EO), taking into account the operating time.
Methods and materials. The performance calculation method takes into account the dynamics of the working pressure in the hydraulic system of the working equipment (GRO), the speed of rotation of the crankshaft (PMVC) from the operating time, regression dependencies were used to describe them. The parameters of the law of distribution of the random value of the working pressure in the hydraulic drive and the rate of its fall for the ‘development and recruitment of soil’ operation were also obtained.
Results. Processing of the results of production experiments enables to establish the dependence of changes in the working pressure in the hydraulic system during development and gathering soil, as well as for all technological operations of the working cycle, the rotational frequency of the crankshaft of a single-bucket excavator engine on the operating time. The influence of the working pressure in the hydraulic drive, the rotational speed of the crankshaft of the excavator engine on the supply and hydraulic power, the duration of technological operations is studied. The calculation of the operational productivity of a single-bucket excavator is carried out taking into account the dynamics of parameters reflecting its change over operating time.
Discussion and conclusions. It has been established that with an increase in operating time, the operating pressure in the hydraulic drive decreases by an average of 12.7-13.0%, and the decrease in the average operating speed of the crankshaft is 4%. The estimated value of the drop in the average hourly operating performance of the EO, taking into account the deterioration of the technical condition, is 55% in the operating time range from 0 to 10,000 operating hours for the Japanese EO ZX 330 model.

1. Sidorov V.I. Power recovery management of power plants of construction and road machinery in operation. Trudy MADI.1975; issue 97: 47–51. (in Russ.)

2. Kazakova Yu.D., Vakhrushev S.I. Research of wear resistance of working bodies of construction and road machinery in various operating conditions. Sovremennye tehnologii v stroitel’stve. Teorija i praktika. 2016; Vol. 1: 310–319. (in Russ.)

3. Salikhov R.F. Improving the methodology for predicting changes in the operational productivity of construction machines from operating time. Mehanizacija stroitel’stva. 2016; 1: 29–32. (in Russ.)

4. Salikhov R.F. Improving the methodology for predicting changes in the operational productivity of construction machines from operating time. Mehanizacija stroitel’stva. 2017;4: 46–50. (in Russ.)

5. Salikhov R.F., Popkov V.I. Methodology for calculating the performance change of a single-bucket hydraulic excavator in the process of operation. Mehanizacija stroitel’stva. 2018; Vol. 79. No. 3: 26–31. (in Russ.)

6. Salikhov R.F., Permyakov V.B., Filippov Y.O., Grusnev M.G. A study of dynamics of the operational performance of a single-bucket excavator, taking into account the operating time during construction of transport infrastructure of oil and gas facilities. Journal of Physics: Conference Seriesthis link is disabled. 2021. 1901(1).0120981313

7. Maksimenko A.N., Makazarija D.Y., Kutuzov V.V., Kutuzova E.V., Zezjulina E.V. Influence of the operating time from the beginning of operation of building and road machines on parameters of efficiency of their use. Vestnik Belarusian – Russian University. 2009; 2: 36–43. (in Russ.)

8. Grushetsky S.M., Evtyukov S.A., Repin S.V., Kuznecov A.A. Determination of technical and operating performance of road machines based on analysis of the scope of work. Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta. 2021; 1: 38–52. DOI: 10.22281/2413-9920-2021-07-01-38-52

9. Dubrovsky N., Veretennikova E., & Kameko O. Machine operating productivity as an indicator of the efficiency of its application. Vestnik of Polotsk State University. Part D. Economic and Legal Sciences. 2021; (5): 38–43. https://doi.org/10.52928/2070-1632-2021-56-5-38-43

10. Grushetsky S.M., Yevtyukov S.A., Repin S.V., Karro G.A. Productivity as a qualitative criterion for evaluating the effectiveness of all stages of the life cycle system of road vehicles. Vestnik Moskovskogo avtomobil’no-dorozhnogo instituta (gosudarstvennogo tehnicheskogo universiteta). 2020; 4 (63): 36–42.

11. Mongush S.Ch., Choodu O.A., Yevtyukov S.A. Modeling of the processes of the influence of climatic factors and terrain on the productivity of ground transport and technological machines. Polytechnical bulletin. Series: Engineering Studies. 2019; 3 (47): 108–111. (in Russ.)

12. Maksimenko A.N., Kutuzov V.V., Sidorov A.N. The influence of the season and operating time since the beginning of operation on the productivity of construction and road machinery and the cost of mechanized work. Gruzovik &. 2010; 2: 16–21. (in Russ.)

13. Fahratov M.A., Kuzhin M.F., Ibragimov R.I. The Influence of Automated Control Systems of Lifting Mechanisms on the Performance of Construction Works. Science prospects. 2020; 1 (124): 62–65. (in Russ.)

14. Pavlov V.P. Fundamentals of system engineering of multipurpose earthmoving machines: monograph. Ministry of Education and Science of the Russian Federation, Federal Agency for Education, Krasnoyarsk State Technical University. un-T. Novosibirsk: Publishing House of SB RAS; Krasnoyarsk: CPI KSTU, 2006: 332. (in Russ.)

15. Chmil V.P. Gidropneumoprivod: monograph. SPbGASU. St. Petersburg, 2010: 176. (in Russ.)

16. Minin V.V., Mirzoyan G.S. Optimization of the drive parameters of small-sized loaders: monograph. Krasnoyarsk: Ed. Krasnoyarsk State University, 1987:160. (in Russ.)

17. Salikhov R.F., Grusnev M.G. The influence of power plant parameters on the technical and economic indicators of single-bucket hydraulic excavators. Construction and road machines. 2010; 4: 47–49. (in Russ.)

18. Maksimenko A.N., Kutuzov V.V., Timofeev G.S., Vasiliev V.V.Accounting and evaluation of the efficiency of using each car of the park in construction. Vestnik Belarusian – Russian University. 2010; 4: 21–28. (in Russ.)

19. Maksimenko A.N. Evaluation of the efficiency of using machines in construction production. Stroitel’naja nauka i tehnika. 2008; 5 (20): 37–43. (in Russ.)

20. Grabovyy P.G., Zhikharev D.F. The productivity of an industrial housing construction enterprise as the main indicator of the potential intensity growth of the producton and construction system Real Estate: Economics, Management. 2022; 2: 11–17. DOI: 10.22337/2073-8412-2022-2-11-17

21. Chechuyev V.E. Methodology for calculating the coefficient of conservation of efficiency of construction machines according to operation data. Construction and road machines. 2021; 5: 15–20. (in Russ.)

22. Repin S.V., Zazikin A.V., Rulis K.V., Maksimov S.E. Methodology for the formation of a fleet of transport and technological machines using leasing and credit. Vestnik Grazhdanskikh Inzhenerov – Bulletin of Civil Engineers. 2017; 4(63): 209–218. (in Russ.)

23. Yevtyukov S.A., Repin S.V., Grushetsky S.M., Karro G.A. Formation of a fleet of cars for the construction, reconstruction, repair and maintenance of highways, taking into account the stages of their life cycle. Vestnik Moskovskogo avtomobil’no-dorozhnogo instituta (gosudarstvennogo tehnicheskogo universiteta). 2020; 3 (62): 62–68. (in Russ.)

24. Kulyashov I.D., Chechuyev V.E., Kravets K.O. The influence of types of operation on the efficiency and reliability of the fleet of construction machines. Fundamental’nye osnovy mehaniki. 2023; 11: 80–89. (in Russ.)

25. Dotsenko A.I. Complex monitoring of parameters of road vehicles and asphalt concrete mixture – the basis for improving the quality of road coverings. Vestnik Moskovskogo avtomobil’no-dorozhnogo instituta (gosudarstvennogo tehnicheskogo universiteta). 2018; 2 (53): 89–93. (in Russ.)

26. Salikhov R.F., Berdnikov I.E. Method for calculating annual duration of maintenance and repairs of domestic and foreign excavators considering time in service. The Russian Automobile and Highway Industry Journal. 2024; 21(1): 26–37. (In Russ.) https://doi.org/10.26518/2071-7296-2024-21-1-26-37. EDN: HZWSMV

27. Tarasov V.N., Kovalenko M.V. Mechanics of digging soils with a bucket of a hydraulic excavator. Construction and road machines. 2003; 8: 41–45. (in Russ.)