颚式破碎机设计说明书(实操分享)

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。

关键词：复摆颚式破碎机；传动；磨损

ABSTRACT

Statistics indicated that the materials processing’S first workin g 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 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 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 desi gn 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 sol,ware to the jaw plate stress，and made the improvement to the jaw plate design parameter,after the improvement

Key word; Jaw Crasher transmission abrasion

目录

摘要 1

前言 1

1 选题背景 4

1.1 发展现状与意义概述. 4

1.2 颚式破碎机的特点 5

1.3颚式破碎机的分类6

2 物料破碎及其意义8

2.1 物料的破碎及其意义8

2.1.1 破碎的目的8

2.1.2 破碎工艺9

2.2 破碎物料的性能及破碎比11

2.2.1 粒度及其表示方法11

2.2.2 破碎产品的粒级特性12