Jaw Crusher Power Consumption And The Structural Parameters Of The Tooth Plate

Statistics indicated that the materials processing's first working procedure--crushing job consumes the electricity to occupy above ore dressing plant total power consumption 50%.Simultaneously uses a PE250×400 jaw crusher jaw plate(fixed jaw plate and moves jaw plate each together),the gross weight 0.2 ton,according to the national jaw crusher least standard capacity 70,000 computation,every year the nation must consume the high manganese steel 56,000 tons approximately.This includes the material crushing cost directly,jaw plate's loss into besides jaw crusher energy consumption another big loss.Therefore the jaw crusher's energy consumption and the jaw plate design parameter are the important questions which the jaw crusher manufacturer and the user cared,therefore this article mainly revolves to reduce the jaw crusher energy consumption and the extension jaw plate service life topic conducts the research.Paper prime task and innovation as follows:1.Using the diffusion structural theory and the damage mechanics theory,the union strain equivalent assuming,infers in the materials crushing process the damage energy liberation rate and between the damage variable relationship,based on this and obtains in the materials crushing process damage energy liberation rate critical threshold value;2.Take the jaw crusher's design parameter as the foundation,the union material in jaw crusher distributed characteristic,infers the jaw crusher electrical machinery power mathematical model,utilizes this model to calculate three kind of model jaw crusher electrical machinery power,and through three kind of model jaw crusher crushing sandstone's electrical machinery power test experiment,has confirmed the inferential reasoning mathematical model rationality;3.Utilized the fuzzy stochastic theory to carry on the analysis to the PE250×400 jaw plate stress situation,has carried on the computation using the Ansys software to the jaw plate stress,and made the improvement to the jaw plate design parameter,after the improvement jaw plate structure reduced the stress concentration,lengthened the service life,saved the manufacture material,simultaneously reduced the crushing materials energy consumption.