机械5

2PE型双腔颚式破碎机的设计 摘要 2PE型双腔颚式破碎机是一种新型的复摆颚式破碎机，它有两个破碎腔，并且具有倒置的曲柄摇杆机构。本文在分析复摆颚式破碎机机构运动方式的基础上，提出具有倒置4杆机构特征的双腔颚式破碎机。该双腔颚式破碎机的工作方式是2个破碎腔交替破碎物料，解决了在空行程过程的能量消耗，提高了能量利用率，这种结构的设计，使单位功率明显下降，处理能力大幅提高，金属单耗也明显降低。并且，该结构具有良好的机构运动特性，能极大地改善齿板的运动状态，使物料更有利于破碎，并对齿板进行了改进，延长了齿板的寿命。 关键字：双腔颚式破碎机破碎腔齿板 ABSTRACT 2 PE type double cavity jaw crusher is a
new ki
nd of compou
nd pe
ndulum jaw crusher, it has two broke
n cavity, a
nd has a
n i
nverted cra
nk rocker mecha
nism. Based o
n the a
nalysis of compou
nd pe
ndulum jaw crusher o
n the basis of mecha
nism motio
n way, with i
nversio
n is characteristic of four bar li
nkage of double cavity jaw crusher. The double cavity jaw crusher works by two crushi
ng cavity alter
nati
ng crushi
ng material, idle motio
n is solved by usi
ng the e
nergy co
nsumptio
n of the process, improve the e
nergy utilizatio
n ratio a
nd the structure desig
n, the u
nit power decreases obviously, greatly i
ncreased processi
ng power, metal co
nsumptio
n is decreased obviously. A
nd mecha
nism motio
n characteristics of the structure has good, ca
n greatly improve the tooth plate motio
n, make the material more co
nducive to broke
n, a
nd the tooth plate is improved, a
nd exte
nded the tooth plate . Key words: Double cavity jaw crusher Crushi
ng cavity Tooth plate 目录 引言1 1课题概述3 1.1破碎设备简述3 1.2颚式破碎机的工作情况6 1.3颚式破碎机的工作原理6 1.4国内外的破碎机发展现状7 1.5破碎机发展前景8 1.8双腔颚式破碎机的改进10 2双腔颚式破碎机的设计11 2.1总体设计方案11 2.1.1设计的总体要求11 2.1.2设计方案的比较和选取12 2.2双腔颚式破碎机的参数确定13 2.2.1排料口的宽度b及公称破碎比I的确定14 2.2.2确定破碎机的啮合角14 2.2.3破碎腔的高度H 14 2.2.4动颚的摆动行程S和偏心轴的偏心距r 15 2.2.5确定连杆长度L1和推力板的尺寸K 16 2.3电动机的选择和确定16 2.3.1主轴转速的确定16 2.3.2确定电动机的功率17 2.3.3电动机的转速17 2.3.4电动机的选择17 2.4双腔颚式破碎机的生产率19 2.5传动带的设计19 2.5.1确定计算功率19 2.5.2带型的选择20 2.5.4计算中心距a和带的基准长度23 2.5.5确定带的根数Z 24 2.5.6确定带的预紧力24 2.5.7计算V带对轴的压力25 2.5.8带轮的结构设计25 2.6机构受力分析26 2.6.1破碎力的计算26 2.6.2机械部件受力分析27 2.7偏心轴的设计29 2.7.1偏心轴的结构设计29 2.7.2计算轴的各段长度及直径30 2.7.3提高破碎机主轴疲劳强度的途径31 2.7.4偏心轴的强度计算31 2.7.5强度校核33 2.8轴承的选择要求和使用寿命计算34 2.9键的强度计算38 2.10轴承座的设计38 2.11齿板的设计39 2.12机架的设计40 3颚式破碎机的磨损42 3.1齿板磨损分析42 3.2齿板磨损机制42 3.3齿板材质的选择43 4破碎机出口扬尘的解决和噪声防治44 4.1破碎机出口扬尘的解决44 4.2破碎机的噪声危害及防治途径44 5偏心轴的加工工艺流程45 5.1偏心轴的结构图45 5.2偏心轴的加工工艺46 总结47 参考文献48 致谢49