Modelowanie i synteza konstrukcyjna urządzeń do transportu i wymiany taśm przenośnikowych

• Autorzy: Pagacz E.

Warianty tytułu

EN

Modeling and design synthesis of conveyor belt transportation and exchange devices

• Języki publikacji: PL

Abstrakty

PL

Artykuł porusza problematykę transportu i wymiany taśmy przenośnikowej oraz przedstawia modele analityczne do obliczeń roboczego procesu przyjezdnych urządzeń obsługowych, w celu racjonalnego, naukowo uzasadnionego doboru liczbowych wartości parametrów konstrukcyjnych, kinematycznych i siłowych. Głównie zapoznaje ze sposobem modelowania maksymalnego momentu oporowego i mocy wydatkowej w procesie zwijania taśmy zarówno z podłoża gruntowego poziomego i pochylonego lub bezpośrednio z przenośnika odcinka albo całej operacyjnej długości taśmy. Przedstawia się także weryfikację porównawczą proponowanych modeli teoretycznych z modelem eksperymentalnym.

EN

Paper presents problems of conveyor belts transport and exchange devices with respect to conditions and needs of Polish open cast lignite mining. Introduction of continuons conveyor transport resultet in the integration of machine systems (KTZ), which greatly improved removal of overburden on dumping waste sites and coal to power plant but also created necessity of various maintenance ands service works, sometimes highly specialized. Introduction of conveyor transport created necessity for design and gradual implementation of multifunctional devices, among others for transportand exchange of conveyor belts. Today, conveyor belts costs in lignite mines are becoming one of the most important costs components, because the cost of conveyor transport is reaching 50% costs of all mining operations. Huge increases of transportation costs in open cast mines, including the cost of conveyor belt itself, resulted decision of initiation of research work in this area, which were started from development of analytical models for operational process calculations in specialized mobile service devices. That allowed rational and scientifically justified selection of cinematic and force design parameters necessary at the design stage of such devices. During later synthesis at the design stage of such devices. During later synthesis of theoretical models on mechanism, winding of used conveyor belts, following models were examined; - Model of frictional contact in process of belt winding on the core - Model of external load in process of belt winding - Model of maximal anti-torque and power output during belt winding - Steering model for conveyor belt un-winding process - Model of maximum force in belt in respect to stability of support system Analytically determined calculation formula, related to modeling of external load on working process, were experimentally verified and positively acknowledged theoretical working parameters with those obtained in practise. From conducted logistical analysis of constraints for conveyor belt transport and exchange machines in domestic open pit mine conditions, unequivocally arises conclusion, that search for new solutions should be directed into specialized, mobile devices (platform in type) for conveyor belt roll transportation. That creates possibility for creation of a new series of machine types.

Słowa kluczowe

PL

transport kopalniany; urządzenia transportowe; taśmy przenośnikowe

• Wydawca: Instytut Górnictwa Odkrywkowego "Poltegor-Instytut"
• Czasopismo: Górnictwo Odkrywkowe
• Rocznik: 2002
• Tom: R. 44, nr 5-6
• Strony: 65--71
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Pagacz E.

• IGO Poltegor-Instytut, Wrocław