Asphalt concrete mixture the asphalt concrete mixing equipment, storage in different hopper in the application of cold after feeder coarse match into the drying drum, inside a drying drum drying, heating and were mixed together at the same time. The role of screening plant is sent hot mineral material hoist application separately according to the different size, so that before mixing respectively for precise measurement.
Currently in biaxial vibrating screen is widely used in mixing equipment, through the 2 pieces of eccentric shaft synchronous rotation, tilt layout make tilted mesh generation and directional vibration screening materials. In this paper, the bearing box sealing mechanism and the oil leakage reasons were analyzed, and improvement measures are put forward.
1 equipment structure and operation conditions SKF Bearings WebSite http://www.skf-nsk.org/ .
1.1 equipment structure
Zoomlion production of vibrating screen using biaxial vibrating screen type, by means of the eccentric block is located in the 2 axis, the effect of rotating centrifugal force generated in the tilted screen produce directional vibration screening materials. As shown in figure 1, the ends of the eccentric shaft vibration by the two bearing bearing, bearing within 14 15 in protecting tube assembly, shaft at both ends of the 10 are eccentric block Ⅰ and eccentric block Ⅱ, by adjusting the number of eccentric block Ⅱ at the same time, to change the size of the vibration amplitude of the vibrating screen, protecting tube assembly in a lubricating oil lubricated bearing 13 15.