毕业论文设计《250x400颚式破碎机设计说明书.》.doc

摘要 国内使用的颚式破碎机类型很多, 复摆颚式破碎基结构简单，制造容易、工作可靠、使用维修方便，所以常见的还是传统的复摆颚式破碎机。本毕业设计主要是为满足生产需求出料口尺 寸：50~60mm；进料块最大尺寸：200mm；产量：50~20吨而研究的。根据以上要求我设计了复摆颚式破碎机（PE250X400）。设计分析了 颚式破碎机的发展现状和研究颚式破碎机的意义及复摆颚式破碎机机构尺寸对破碎性能的影响，计算确定了PE250X400的设计参数。设计内容主要包括了复 摆颚式破碎机的动颚、偏心轴、皮带轮、地基、动颚齿板、机架等一些重要部件；另外对颚式破碎机的工作原理及特点和主要部件作了介绍，包括保险装置、调整装 置、机架结构、润滑装置等；同时对机器参数（主轴转速、生产能力、破碎力、功率等）作了计算以及对偏心轴作了设计。此外也简单介绍了破碎的意义、破碎工艺 和破碎比的计算，颚式破碎机的主要部件的安装、颚式破碎机的操作及维修等。：复摆颚式破碎机传动磨损ABSTRACT Statistics indicated that the materials processing’S first working procedur——_crushing job consumes the electricity to occupy above ore dressing plant total power consumption 50％．Simultaneously uses a PE250x400 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 crushers 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 pl ate service l i fe 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 cr