Dynamic Load Calculation of Mining Shovel Crowding System

Abstract:

To highlight the main factors, only the crowding shaft was taken as elastic component, while the other crowding system parts, such as girth, driving shaft and swing arm were taken as rigid components; the effects of damping were ignored; the dynamical model of excavator’s crowding system was simplified to a two degree of freedom model; mathematical and mechanical models were derived by Lagrange equation method; the locked rotor condition, when the bucket rod was perpendicular to the boom, was used as the calculation condition; the calculated dynamic load coefficient of the crowding system was compared with that in multi degree of freedom model and the result shows: to simplify calculation, it is practicable to replace multi degree of freedom models with two degree of freedom models in the preliminary design stage.

• Periodical: Advanced Materials Research (Volumes 960-961)
• Pages: 1383-1388
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.960-961.1383
• Online since: June 2014
• Authors: Gui Yu Lin, Jie Li, Jin Hua Lian, Jun Zhao*
• Keywords: Crowding System, Dynamic, Dynamic Load Coefficient, Excavator, Vibration

References

[1] Li Jie. The Dynamics research of mechanical mining shovel's driving system [D], Northeastern University, (2012).

[2] Yan Shu-wen. The design of mechanical mining shovel[M]. Beijing: China Machine Press, 1983: 12-14.

[3] Samuel Frimpong, Yafei Hu Hilary Lnyang. Dynamic Modeling of Hydraulic Shovel Mining shovels for Geomaterials[J]. International Journal of Geomechanics, 2008, 8(1): 20-29.

DOI: 10.1061/(asce)1532-3641(2008)8:1(20)

[4] Koivo A J, Thoma M, Kocaoglan E, et al. Modeling and control of mining shovel dynamics during digging operation[J]. Journal of Aerospace Engineering, 1996, 9(1): 10-18.

DOI: 10.1061/(asce)0893-1321(1996)9:1(10)

[5] Samuel Frimpong, Yafei Hu, Kwame Awuah-Offei. Mechanics of cable shovel-formation interactions in surface mining excavations[J]. Journal of Terramechanics, 2005, 42(1): 15-33.

DOI: 10.1016/j.jterra.2004.06.002

[6] Awuah-offei K, Frimpong S. Numerical simulation of cable shovel resistive forces in oil sands excavation[J]. International Journal of Mining, Reclamation and Environment , 2006, 20(3): 223-238.

DOI: 10.1080/17480930600678289

[7] Vaha P K, Skibniewski M J. Dynamic model of mining shovel[J]. Journal of Aerospace Engineering, 1993, 6(2): 148-158.

[8] Halatchev R A, Knights P F. Spatial variability of shovel dig performance [J]. International Journal of Mining, Reclamation and Environment , 2007, 21(4) : 244-261.

DOI: 10.1080/17480930701352933

[9] Patnayak S, Tannant D D, Parsons I, et al. Operator and dipper tooth influence on electric shovel performance during oil sands mining[J]. International Journal of Mining, Reclamation and Environment, 2008, 22(2): 120-145.

DOI: 10.1080/17480930701482961

[10] Kwame Awuah-Offei, Samuel Frimpong. Cable shovel digging optimization for energy efficiency[J]. Mechanism and Machine Theory, 2007, 42(8): 995-1006.

DOI: 10.1016/j.mechmachtheory.2006.07.008