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Coal cutting by сutter heads with lever-and-impulse drives

Discontinuous coal cutting process typical of coal cutter–loaders with lever-andimpulse drives (LID) is investigated. The research was carried out in a full-scale coal and cement bock equipped with coal cutting machines with different circuitries of lever-and-impulse drives and advance mechanisms. The comparison included data on operation of a coal cutter–loader with a conventional drive. The research finds out that loading of cutter heads on the cutter–loaders with the lever-and-impulse drives is cyclical and changes from zero to maximal values. The increase in the cutting force moment from zero to a maximum causes the decrease in the rate speed of the cutter head from a maximum in noncutting to zero. Furthermore, it is found that for the cutting machines with the lever-and-impulse drives without a differential advance mechanism, the increase in the coal cuttability increases the cutting force moment at the same depth of cut. Vice versa, in the cutting machines with the lever-and-impulse drives with a differential advance mechanism, with the increasing cuttability, the depth of cut decreases at a slight change in the moment of the cutting forces. The tests show that the force and energy data of the cutting process of the machines with the lever-and-impulse drives are the same as in the excavators with the conventional drives. During uneven motion of the cutter head with the lever-and-impulse drive, the cutter head experiences the inertia moment comparable with the cutting force moment in the interval of time of accelerated motion. In this case, the value of the torque on the cutter head drive shaft and in the drive transmission is equal to the sum of the cutting force and inertia moments.

Keywords: coal block, continuous and discontinuous cutting, lever-and-impulse drive, cutting force, cutting energy intensity, depth of cut, cuttability, cutting force moment, rate speed, kinematic diagram.
For citation:

Linnik Yu. N., Linnik V. Yu. Coal cutting by сutter heads with lever-and-impulse drives. MIAB. Mining Inf. Anal. Bull. 2024;(7):78-90. [In Russ]. DOI: 10.25018/0236_ 1493_2024_7_0_78.

Acknowledgements:
Issue number: 7
Year: 2024
Page number: 78-90
ISBN: 0236-1493
UDK: 622-1/-9
DOI: 10.25018/0236_1493_2024_7_0_78
Article receipt date: 28.11.2023
Date of review receipt: 30.01.2024
Date of the editorial board′s decision on the article′s publishing: 10.06.2024
About authors:

Yu.N. Linnik1, Dr. Sci. (Eng.), Professor, Professor,
V.Yu. Linnik1, Dr. Sci. (Econ.), Assistant Professor, Professor, e-mail: vy_linnik@guu.ru,
1 State University of Management, 109542, Moscow, Russia.

 

For contacts:

V.Yu. Linnik, e-mail: vy_linnik@guu.ru.

Bibliography:

1. Lukyanenko V. A. The method of unpopulated extraction of minerals. Ugol'. 2019, no. 2, pp. 37—39. [In Russ]. DOI: 10.18796/0041-5790-2019-2-37-39.

2. Plakitkina L. S., Plakitkin Yu. A., Dyachenko K. I. Assessment of the production potential of domestic machine-building companies for implementation of the import substitution program in the coal industry. Ugol'. 2021, no. 1 (1138), pp. 34—42. [In Russ]. DOI: 10.18796/0041-5790-2021-1-34-42.

3. Razovskiy Y. V., Artemiev N. V., Kiseleva S. P., Saveleva E. Y., Rudnitskiy V. S. On the formation of superprofits in the digital economy. Ugol'. 2021, no. 4, pp. 37—39. [In Russ]. DOI: 10.18796/00415790-2021-4-37-39.

4. Zakharov V. N., Kubrin S. S. Digital transformation and intellectualization of mining systems. MIAB. Mining Inf. Anal. Bull. 2022, no. 5-2, pp. 31—47. [In Russ]. DOI: 10.25018/0236_1493_202 2_52_0_31.

5. Nagovitsyn O. V., Voznyak M. G. Robotic mine management. MIAB. Mining Inf. Anal. Bull. 2021, no. 5-1, pp. 326—335. [In Russ]. DOI: 10.25018/0236_1493_2021_51_0_326.

6. Aleksandrov E. V., Aleksandrov V. E., Valdaev A. P., Aleksandrov V. E. USSR Copyright Certificate No. 599122, 1978. [In Russ].

7. Ustyuzhanin S. V. Investigation of force and energy parameters of coal cutting process as applied to combines with lever-pulse drive. Nauchnye soobshcheniya Instituta gornogo dela im. A.A. Skochinskogo. Mekhanizatsiya i avtomatizatsiya podzemnoy dobychi uglya: sbornik nauchnykh statey. Vyp. 218 [Scientific reports of the A.A. Skochinsky Institute of Mining. Mechanization and automation of underground coal mining: a collection of scientific articles. Issue 218], Moscow, 1983, pp. 81—88. [In Russ].

8. Pozin E. Z., Melamed V. Z., Ton V. V. Razrushenie ugley vyemochnymi mashinami [Coal cutting by winning machines], Moscow, Nedra, 1984, 288 p.

9. Linnik Yu. N., Linnik V. Yu. Razrushenie ugol'nykh plastov pri dobyche vyemochnymi mashinami [Destruction of coal seams by mining machines], Moscow, INFRA-M, 2022, 356 p.

10. Wang G., Jiao S., Cheng G. Fully mechanized coal mining technology for thin coal seam under complicated geological conditions. Energy Exploration & Exploitation. 2011, vol. 29, no. 2, pp. 169—177.

11. Xiang Cheng, Guangming Zhao, Yingming Li, Xiangrui Meng, Qingyi Tu Key technologies and engineering practices for soft-rock protective seam mining. International Journal of Mining Science and Technology. 2020, vol. 30, no. 6, pp. 889—899. DOI: 10.1016/j.ijmst.2020.07.006.

12. Liqing Sun, Xiaodi Zhang, Qingliang Zeng, Kuidong Gao, Kao Jiang, Jiawei Zhou Application of a screw conveyor with axial tilt blades on a shearer drum and investigation of conveying performance based on DEM. Particuology. 2022, vol. 61, pp. 91—102. DOI: 10.1016/j.partic.2021.06.001.

13. Xin Wang, Yangxi Bai, Xianfeng Zou, Xinwei Yang, Hongyan Chen, Hongyue Chen Research on indirect measurement and estimation method of shearer drum cutting load. Alexandria Engineering Journal. 2023, vol. 65, pp. 939—949. DOI: 10.1016/j.aej.2022.10.002.

14. Li Xiao-Huo, Li Ting, Jiao Li, Xu Guang-Ming, Yang Ting-Ting Development of cutting load simulation system and its simulation study on drum shearer. Journal of China Coal Society. 2016, vol. 41, no. 2, pp. 502—506. DOI: 10.13225/j.cnki.jccs.2015.0430.

15. Wang Li-Ping, Jiang Bin-Song, Zhang Qiang Calculation of peak cutting force of conical picks under conditions of dissymmetrical slotting. Journal of China Coal Society. 2016, vol. 41, no. 11, pp. 2876—2882. DOI: 10.13225/j.cnki.jccs.2016.0900.

16. Linlin Wang, Dekun Zhang, Dagang Wang, Cunao Feng A review of selected solutions on the evaluation of coal-rock cutting performances of shearer picks under complex geological conditions. Applied Sciences. 2022, vol. 12, no. 23, article 12371. DOI: 10.3390/app122312371.

17. Jinxia L., Chao M., Qingliang Z., Kuidong G. Discrete element simulation of conical pick's coal cutting process under different cutting parameters. Hindawi Shock and Vibration. 2018, vol. 4. DOI: 10.1155/2018/7975141.

18. Xueyi Li, Binbing Huang, Guoying Ma, Qingliang Zeng Study on roadheader cutting load at different properties of coal and rock. The Scientific World Journal. 2013. DOI: 10.1155/2013/624512.

19. Nguyen V. X., Nguyen K. L., Gabov V. V., Lykov Y. V. Relocation schemes of picks with cutting, coupling and group cuts on shearer cutting drums. IOP Conference Series: Earth and Environmental Science. 2019, vol. 378, no. 1, article 012025. DOI: 10.1088/1755-1315/378/1/012022.

20. Shabaev O. E., Zinchenko P. P., Meznikov A. V. Experimental studies of the influence of the working width of the auger executive body of the combine harvester on the efficiency of the loading process. Mining Science and Technology (Russia). 2019, vol. 4, no. 2, pp. 90—102. [In Russ]. DOI: 10.17073/2500-0632-2019-2-90-102.

21. Pozin E. Z., Melamed V. Z., Azovtseva S. M. Izmel'chenie ugley pri rezanii [Grinding of coals by cutting], Moscow, Nauka, 1977, 138 p.

22. Yaneng Zhou, Wu Zhang, Isaac Gamwo, Jeen-Shang Lin Mechanical specific energy versus depth of cut in rock cutting and drilling. International Journal of Rock Mechanics and Mining Sciences. 2017, vol. 100, pp. 287—297. DOI: 10.1016/j.ijrmms.2017.11.004.

23. Aleksandrov V. E., Levinz G. M. Mathematical model of a combine harvester with a lever-pulse drive. Nauchnye soobshcheniya Instituta gornogo dela im. A.A. Skochinskogo. Sozdanie i povyshenie nadezhnosti gorno-shakhtnogo oborudovaniya: sbornik nauchnykh statey. Vyp. 220 [Scientific reports of the A.A. Skochinsky Institute of Mining. Creation and improvement of reliability of mining equipment: a collection of scientific articles. Issue 220], Moscow, 1983, pp. 29—36. [In Russ].

24. Chernova L. N. Study on the computer of the dynamics of the operating mode of a combine harvester with a lever-pulse drive (RIP). Nauchnye soobshcheniya Instituta gornogo dela im. A.A. Skochinskogo. Tekhnicheskoe obsluzhivanie i povyshenie effektivnosti primeneniya gornykh mashin: sbornik nauchnykh statey. Vyp. 237 [Scientific reports of the A.A. Skochinsky Institute of Mining. Maintenance and improvement of the efficiency of mining machines: a collection of scientific articles. Issue 237], Moscow, 1985, pp. 88—93. [In Russ].

25. OST 12.44.258-84. Kombayny ochistnye. Vybor parametrov i raschet sil rezaniya i podachi na ispolnitel'nykh organakh. Metodika [Industry standards 12.44.258-84. Combine harvesters. Selection of parameters and calculation of cutting and feeding forces on the executive bodies. Methodology], Moscow, 1985, 108 p. [In Russ].

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