Leakage monitoring of a in the case of working machines to be used in underground mining. the hydraulic drive system

摘要

In each hydraulic line (14,15) to a gp. of machines (16) from a valve and control station (10) with a pump (11) and tank connection (12), a pressure limiting valve (17) precedes a transducer (18) linked to a computer (19). The valves (17) operate bidirectionally to allow for reversal of the machinery (16). The desired value of pressure corresponds to a basic level of about 3 atmos. associated with an" idling speed. ADVANTAGE - Smaller leaks can be detected by pressure loss measurements in region of hoses even when machinery is idling, allowing remedial measures before total hose failure threatens.