编号：（ ）字 号 本科生毕业设计（论文）题目： 姓名： 学号： 班级： 采煤机截割部设计 摘 要采煤机各部分按组装可分为机身及牵引部，截割部，电气控制及调速设备，液压调高系统，冷却喷雾系统，辅助装置等。本次毕业设计主要是针对采煤机截割部的设计，采煤机截割部主要是由一个减速箱和四级齿轮传动组成。截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆柱齿轮和行星轮系的传动，最后驱动滚筒旋转。截割部采用四行星单浮动结构，减小了结构尺寸，采用大角度弯摇臂设计，加大了过煤空间，提高了装煤效果。在设计过程中，对截割部的轴、传动齿轮、轴承和联接用的花键等部件进行了设计计算、强度校核和选用。本说明书主要针对主要部件的设计计算和强度校核进行了叙述和介绍。此外，此外文中还介绍了采煤机的发展现状和工作原理等。由于我国对中厚煤层开采不到位，所以设计大功率电牵引采煤机的截割部具有重要意义，使采煤机用于矿井中较厚层综采工作面，开采较硬煤质并能适应较复杂的顶底板条件。关键词：采煤机；截割部；行星轮系；传动齿轮；设计ABSTRACTThe coal mining machine parts assembly can be divided according to the airframe and traction, cutting part, electrical control, hydraulic control equipments and system, cooling system, auxiliary device spray.Calculate in design which cuts the cutting department of main introduction mining machine of this manual.It is made up of a gearbox and moderate breeze gear wheel transmission that the MG400/920-WD type mining machine cuts the cutting department, cut the electrical machinery of cutting department and put to fix up horizontally in the rocker arm, the power that the motor outputs leans on a round of transmission of department of gear wheel and planet round via the tertiary straight tooth, urge the cylinder to rotate finally. Cut the cutting department and adopt the floating structure of four planetary forms, have reduced the physical dimension, adopt the large angle to curve the rocker arm to design, have strengthened the...
