带式输送机英语文献

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带式输送机英语文献Shaft steelwork is one of the most important components of the infrastructure in an underground mine， as it is
used for maintaining the conveyance even running， direction guiding and drop prevention when it transports staff
and materials to and from the surface as well as hoists the coal. In a perfectly-aligned shaft steelwork system during
hoisting materials， the conveyance will experience very little shock most of the time. However， when the shaft
steelwork system has imperfect guide-joints， deflection or guide-plumb， etc.， it is possible to lead to non-stationary
operation in addition to possible injury or loss of life， even more significant production loss. It has， therefore，
become necessary to carefully monitor the condition of the shaft steelwork.
Meanwhile， with the modernization of mechanical equipment， both the hoisting altitude and velocity has
increased， which will generate bigger vibration. Some papers introduced many conventional vibration signal
processing methods in fault diagnosis (S. Vulli， 2009; Changzheng， 2004; Peter W.Tse， 2004)， however， they did
not explain the vibrating mechanism of shaft steelwork system and the problem that whether the vibration under
run-ups and deceleration is more or less violent than that under even motion; Therefore， the study on the vibrating
mechanism of shaft steelwork system and hoist signal characteristics of non-stationary running is still a blank.
This paper is divided into three major sections as follows. Section one opens with the imperfect steelwork
patterns and the investigation on fault mechanics of shaft steelwork based on them; section two deals with the