THE VERIFICATION CALCULUS OF THE DRIVING WHEEL OF THE EXTRACTION MACHINE AT THE OLD PIT WITH A SKIP – LONEA MINING PLANT

Abstract

Extracting coal from the underground and sterile from Mining Plant Lonea is made by using the extraction installation with a skip, which includes an extraction machine located in the tower of the old pit, having two skips of 8 tons each. Any malfunction of the extraction machine can lead to important production losses and to the endangerment of the state of security and safety of both the deposit and the working staff. Over the years, in the case of the wheel of the extraction machine, we had fissures in the welding chain of the pap and fissures of the stiffening ribs of the braking disc, which have evolved in time in what regards dimensions and number. To eliminate these fissures, we undertook operations of reparation, by removing and restoring the welding chains in the affected areas of the wheel. In order to determine the causes of the cracking of the welding chains, and in order to guarantee the good functioning of the extraction machine, we undertook a study to check the solicitation of the drive wheel. In this paper, we present the results of the calculus of verification the drive wheel and the technical solution for improving its construction and functioning.

Keywords

• Verification
• Driving wheel
• Extraction machine.