Wear intensity of mine hoist brake materials

Ungureanu, Miorița

doi:10.17559/tv-20140214120059

Cited by 1 publication

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some of them include chapters focused on general characteristics of vertical conveyance. Number of publications deal with the issues of structural components, such as drums, friction pulleys (Wolny & Badura, 2012), sheaves (Grobler, 2005;Dumitrescu et al, 2015), brakes (Kowal et al, 2012;Ungureanu et al, 2017a) and drives (Tiley, 1993), cages (skips) and hoist steel wire ropes (Stanova et al, 2015;Šaderová, 1997). Some authors describe hoisting machines used in practice (Despodov et al, 2012;Johansson, 2005), some deal with safety issues (Hayes, 2011) and maintenance (Vayenas & Wu, 2011), others evaluate engagement of vertical conveyance in comparison with other available conveyance systems, e.g., conventional shaft hoisting and flexowell vertical belt applications (Gonen at al., 2012), vertical shaft and a ramp system (Elevli et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Archives of Mining Sciences

Saderova,

Straka,

Jelisavac Erdeljan

2019

View full text Add to dashboard Cite

Scientific research discussed in the present article is focused on the determination of the vertical conveyance capacity in the process of mining minerals, while applying a mathematical calculation and verification of the calculation results by simulation. Input parameters for the capacity calculation include the transport cycle time. The article presents the results of measuring a transport cycle during the operation and a calculation of the transport cycle while using known formulas. On the basis of the observed findings, two methods of increasing the hoisting machine capacity were proposed. The first method is increasing the velocity from the original value of 6 m.s -1 to the velocity of 7 m.s -1 . In this case, we achieved the daily capacity increase in 2-2.5%. The second method consisted in changing the hoisting machine acceleration and deceleration modes by which we achieved as much as 9% increase in the daily capacity. The article also describes a transport cycle simulation model, with its output being the number of work cycles parameter. The obtained parameter was used again in the capacity calculation. The simulation model was used in experiments for both, the current status as well as proposed solutions. The simulation model serves also for calculation verification.

show abstract