Журналы →  Eurasian Mining →  2023 →  №1 →  Назад

Название Assembly accuracy of power cylinders for powered roof supports in longwalls
DOI 10.17580/em.2023.01.11
Автор Mnatsakanyan V. U., Surina N. V., Belyankina O. V., Sizova E. I.
Информация об авторе

National University of Science and Technology—NUST MISIS, Moscow, Russia:

Mnatsakanyan V. U., Professor, Doctor of Engineering Sciences, artvik@bk.ru
Surina N. V., Associate Professor, Candidate of Engineering Sciences
Belyankina O. V., Associate Professor, Candidate of Engineering Sciences
Sizova E. I., Associate Professor, Candidate of Engineering Sciences


The article actualizes the issues of linkage precision in joints in hydraulic cylinders of powered roof supports at the stages of their design, manufacture and repair. The influence of the structural clearances on the position deviations of piston shaft under the action of external forces is shown. The linkage precision parameters for the joints being discussed are substantiated, and the methods to achieve these parameters in hydraulic props during their manufacture, assembly and repair are proposed. Based on the study of the effect exerted by the clearances in the cylinder–piston and bottom box–shaft joints on the position deviations of the shaft and on the level of the contact stresses initiated, the contact conditions of the mating parts are identified to minimize the stresses. The recommendations are developed to ensure the required sizes of clearances in the joints. For this purpose, such methods of precise linkage precision as selective assembly, assembly by the method of intergroup interchangeability and the method of adjustment using a piston as an immobile equalizer are considered. The main technological conditions for the applicability of selective assembly are established in terms of a hydraulic cylinder–piston connection with a diameter of 110H9/f9 in the serial production conditions. The calculated results and the ways to reduce the excess stock as a consequence and a main disadvantage of the selective assembly are presented.

Ключевые слова Powered roof supports, hydraulic props, life span, precision parameters, selective assembly, excess stock, incomplete parts, intergroup interchangeability, oversize dimensions, adjustment method, piston–equalizer
Библиографический список

1. Elser H., Heutmann T., Lindemann M., Schmitt R. Hellsehen in vier Schritten. Data Analytics für das digitale Qualitätsmanagement. Qualität und Zuverlässigkeit. 2018. Vol. 63, No. 2. pp. 31–33.
2. Schmitt R., Göppert A., Hüttemann G., Lettmann P., Rook-Weiler K. et al. Frei verkettete wandlungsfähige Montage. Internet of Production für agile Unternehmen : AWK Aachener Werkzeugmaschinen-Kolloquium. Aachen, 2017. pp. 339–368.
3. Wiederhold M., Greipel J., Ottone R., Schmitt R. Clustering of similar features for the application of statistical process control in small batch and job production. International Journal of Metrology and Quality Engineering. 2016. Vol. 7, No. 4. DOI: 10.1051/ijmqe/2016018
4. Wenking M., Benninghaus C., Groggert S. Die Zukunft von Manufacturing Data Analytics: Implikationen für eine erfolgreiche Datennutzung im produzierenden Umfeld. Industrie 4.0 Management. 2017. Vol. 33, No. 4. pp. 33–37.
5. Nabatnikova T. Yu., Nabatnikov Yu. F. Justification of seating types for joints assembled in hydraulic props. GIAB. 2001. No. 12. pp. 178–181.
6. Keropyan A. M., Gorbatyuk S. M. impact of roughness of interacting surfaces of the wheel-rail pair on the coefficient of friction in their contact area. Procedia Engineering. 2016. Vol. 150. pp. 406–410.
7. Keropyan A. M., Kantovich L. I., Kalakutsky A. V. Continuous control of rail profile in open pit mines. Gornyi Zhurnal. 2022. No. 8. pp. 48–52.
8. Kashirskiy A. S., Rakhutin M. G., Kirichenko Yu. V., Kuzin E. A., Ivashchenko G. S. Calculation of productivity and justification of cassette-type sweeper parameters for ferro-manganese nodule mining. Gornaya promyshlennost. 2020. No. 1. pp. 155-159.
9. Nabatnikov Yu. F., Ngo Van Tuan. Hydraulic legs of powered roof support: accuracy of manufacturing, level of quality, lifetime and their control technology. GIAB. 2019. No. 3. pp. 192–198.
10. Nabatnikov Yu. F., Ngo Van Tuan, Ngo Vu Nguyen. Providing the preset service life of hydraulic cylinders of powered roof support through selective assembly of their joints. GIAB. 2019. No. S45. pp. 3–18.
11. Nabatnikova T. Yu., Nabatnikov Yu. F. Modeling piston position deviation charts in hydraulic props. GIAB. 2001. No. 12. pp. 182–183.
12. Van Tuan Ngo. Effect of Uncertainty in Basing Hydraulic Prop Rod on Dimensional Wear of its Basic Surfaces. Gornye nauki i tekhnologii. Vol. 5, No. 3. 2020. p. pp. 201–207.
13. Horin V. N. Design and engineering of powered roof supports. Moscow : Nedra, 1988. 25 p.
14. Gubanov, S., Petsyk, A., Komissarov, A. Simulation of stresses and contact surfaces of disk rolling cutters with the rock when sinking in mixed soils. E3S Web of Conferences. 2020. Vol. 177, 03008.
15. Perekutnev V. E., Zotov V. V. Modeling drive wheels of hoisting machines with rubber cables. GIAB. 2020. No. 6. pp. 105–114.
16. GOST 24643–81 Basic norms of interchangeability. Tolerances of form and position of surfaces. Numerical values. Moscow : Izdatelstvo standartov, 1981.
17. Kosilova A. G., Mescheryakova R. K. Mechanical engineer’s manual. 4th edition. Moscow : Mashinostroyenie, 1986. Vol. 1. 656 p.
18. Nabatnikov Yu. F. Reduction in excess stock in selective assembly. Tehnologiya mashinostroyeniya. 2009. No. 11. pp. 23–25.
19. Nabatnikov Yu. F. Computerized modeling of selective assembly and excess stock estimation. Proceedings of VI International Conference on Assembly Technology and Equipment. Rzeszów, Poland. 2008. pp. 37–40.
20. Timiryazev V. A., Novikov V. Yu., Shirtladze A. G. Machine manufacturing science. University textbook. Moscow : Stankin, 2019, 393 p.

Полный текст статьи Assembly accuracy of power cylinders for powered roof supports in longwalls