Uticaj otkaza zubaca na bezbednost mašina - ispitivanje i analiza

Abstract

Odredbama Mašinske direktive 98/37/EC definisani su osnovni zahtevi koje moraju da ispune zupčasti prenosnici snage u pogledu zdravstvene i bezbednosne zaštite. U radu su opisani različiti oblici oštećenja i razaranja zubaca zupčanika i uslovi spoljnje okoline, rada i održavanja koji do njih dovode. Detaljnije su opisani oblici oštećenja površina bokova zubaca u uslovima velikih opterećenja i nedovoljnog podmazivanja, koji mogu dovesti do havarija velikih mašina i predstavljaju opasnost po ljude i okolinu. Prikazan je postupak ispitivanja i analize nekoliko vrsta i stepena oštećenja zubaca. Prikazano je izvedeno ispitivanje zubaca zupčanika pogona prednje strele bagera.

According to clauses of Machinery Directive 98/37/EC the basic requirements are defined which have to be met by gear power transmissions in regard to health and safety. Different types of gear teeth damage, fracture and affecting conditions of environment, service and maintenance are analyzed in the paper. A detailed description of damage forms of teeth flank surfaces under high loads and insufficient lubrication which can cause failure of heavy machinery and also imposes danger for people and environment. Testing and analysis procedures for some types and levels of teeth damage are shown. Tests of gear teeth of an excavator front arm are presented.