Browsing by Subject "conveyor belts"

Now showing 1 - 5 of 5

Access status: Open Access ,
Energooszczędne taśmy przenośnikowe dla kopalń węgla brunatnego
(Wydawnictwa AGH, 2011) Hardygóra, Monika; Komander, Henryk; Bajda, Mirosław
The impact of belt rolling resistance along rollers (indentation resistance of the belt into the roller) on possibilities of reducing the power energy consumption of belt conveyor drives, is discussed in the paper. Possibilities of reducing the power energy consumption by modification of belt construction and by using the bottom cover made of the rubber having special properties, is presented. Through modification of belt construction and choosing the proper materials for bottom cover, it is possible to reduce the rolling resistances, which are the biggest component of conveyor's main resistance and thus to improve the energy efficiency of the conveyor. The results of test on the impact of some belt parameters on the rolling resistance are showed.
Access status: Open Access ,
Możliwości zastosowania tworzyw poliuretanowych w przenośnikach taśmowych
(Wydawnictwa AGH, 2011) Furmanik, Kazimierz; Kajzer, Stanisław; Matyga, Jan
The article suggests the possibility of application of modified polyurethane plastic friction linings driving drums and rollers in conveyor belts. Particular attention is paid here on the cooperation of these elements from the conveyor belt, their proper construction and buildings on the route in order to reduce resistance, which has a significant impact on energy consumption and durability of the conveyor.
Access status: Open Access ,
Potrzeba opracowania własnych urządzeń diagnostycznych do automatycznej oceny stanu taśm przenośnikowych w kopalniach odkrywkowych
(Wydawnictwa AGH, 2011) Błażej, Ryszard; Jurdziak, Leszek; Zimroz, Radosław
Review of available on the market conveyor belt inspection tools for assessment of their condition has shown lack of openness of ready solutions on cooperation with existing in mines belt databases and lack of possibility to create own applications based on source diagnostic signals with usage of additional information from these databases. This situation induce authors to create the machine vision device for belt cover inspection and process source signal from magnetic scanner of belt cord. The aim is to work out comprehensive set of devices and algorithm processing collected data and making integrating evaluations of belts condition in order to aid taking rational decisions about their replacements taking into consideration possibility of effective and economically profitable belt refurbishment. System will be not only used for assessment of belt and its core condition, but also will protect belt and conveyor before catastrophic event such us longitudinal rips. It will also create schedules of essential repair works. Due to close cooperation with future users the worked out system should very well fulfill their needs. They can be taken into account at the design stage and during defining its functionality. Authors of solutions have decided to put more attention on possibility of automation of carried out assessments and their recording in databases in order to minimize necessity of human interpretation and intervention everywhere it will be possible. Quality financial analysis has shown that it is possible to lower total transportation cost increasing expenditure on automatic diagnostics of conveyor belts.
Access status: Open Access ,
Przemienniki częstotliwości w napędach jazdy gąsienicowych maszyn górniczych i węglowych przenośników taśmowych o regulowanej prędkości taśmy
(2007) Kasztelewicz, Zbigniew; Reizer, Ryszard; Szymański, Jerzy; Świderski, Jerzy
In the paper modern drive solutions of mobile conveyor belts, caterpillar excavators and spills for surface brown coal mine as well as control methods of systems are presented. In classic drive solutions DC motors were used. Nowadays DC motors are replaced by AC motors. AC motor drives are controlled by advanced frequency converters in which scalar and vector control strategies are implemented. Power electronic recuperation units are used for power saving. Recuperation units return electrical energy to the power grid when the induction motors work as generators. The solution of the multi-motor drive system is discussed on the basis of the biggest brown coal excavator in Poland.
Access status: Open Access ,
The influence of selected parameters on the elasticity modulus of conveyor belts with a polyester-polyamide core
(Wydawnictwa AGH, 2023) Zarzycki, Jacek
The article compiles information on the influence of selected factors on the elasticity modulus of conveyor belts with a textile core. It presents a laboratory method for testing the modulus of elasticity, highlighting how its value changes depending on the load range and temperature. The modulus of elasticity is a parameter essential for the proper design of conveyor belts, especially those that are long or unconventional.