Wire rope effect

Overview of henan coalification coal company manual hoist crane in order to reduce the well the worker in the upper and lower labor intensity of the well on the way, in 1992 and 2002, respectively, at one level and two level, between two and three levels of each set up a length of 500 m trolley car. Aerial mancar since the equipment running well since it was put into operation, drastically reduce the labor intensity of underground staff's work. However, aerial hoist equipment short service life of wire rope has been plagued our technical problems, the longest service life of wire rope for five months, the shortest is only 45 days. The reason is caused by fatigue broken wires transfinite (" coal mine safety regulations "regulation: broken wires in one lay length reaches 25% of the total number of wire must be replaced. I mine trolley car wire rope specifications for: 6 x 19-21.5 - ZZ - 1670, namely the broken wires in one lay length to 28) must be replaced when. The value of a wire rope is 17000 yuan, need at least four small class to complete 12 employees to work hard. Frequent replacement of wire rope not only affect the normal downhole worker ChengZuoRen car, but also to spend a lot of unnecessary manpower and material resources. In order to solve this problem, we return to the operational status of vehicle equipment and comprehensive study and analysis of aerial mancar wire rope for the stress analysis and selection.