机械5

930KW电牵引采煤机牵引部设计 摘要 930KW采煤机是一种大功率无链电牵引采煤机，该采煤机适用于缓倾斜的中硬煤层，它与刮板输送机液压支架等配套使用，该采煤机的机械传动采用直齿传动系统，在能够承受足够载荷的情况下，节约成本，降低维护的难度。 本次设计中主要是针对采煤机牵引部的设计，采煤机的牵引部主要是由牵引机构和牵引部传动装置组成，其中传动装置中的减速箱是由两级直齿轮减速以及两级行星齿轮减速组成，其主要作用是将电动机输出的转速降低从而使扭矩增大，最后驱动行走部带动采煤机沿着工作面前进。设计任务主要有首先初步确定方案，确定了方案之后查阅各种资料对牵引部的传动系统进行设计，对减速箱的齿轮、轴、轴承、花键等零部件的选型和校核等，在设计过程中应该正确的利用设计手册，实事求是的计算，确保计算中数字的准确性，培养我们独立思考认真解决问题的能力，以此来达到此次设计的目的。 关键词：采煤机：牵引部：减速箱：齿轮：行星轮 930KW electric tractio
n shearer tractio
n departme
nt desig
n Abstract The shearer is a ki
nd of high-power chai
n electric haulage shearer,which is suitable for medium-hard coal seamswith ge
ntle i
ncli
natio
n, a
nd it is used togetherwith scraper co
nveyor hydraulic support a
nd so o
n. The mecha
nical tra
nsmissio
n adopts a straight-toothed tra
nsmissio
n system,which ca
n save costs a
nd reduce the difficulty of mai
nte
na
ncewhe
n it ca
nwithsta
nd sufficie
nt loads. I
n this desig
n, the desig
n of the hauli
ng sectio
n of the shearer is mai
nly used. The tractio
n sectio
n of the shearer is mai
nly composed of a tractio
n mecha
nism a
nd a tractio
n sectio
n tra
nsmissio
n device. The gear box i
n the tra
nsmissio
n device is decelerated by two-stage spur gears a
nd has two stages. The pla
netary gears are decelerated a
nd their mai
n fu
nctio
n is to reduce the output speed of the motor to i
ncrease the torque. Fi
nally, the drivi
ng u
nit drives the shearer to adva
nce alo
ng theworki
ng surface. The desig
n task is mai
nly to first determi
ne the program, determi
ne the program after co
nsulti
ngvarious data o
n the tractio
n drive system desig
n, gearbox, shaft, beari
ngs, spli
nes a
nd other parts of the gearbox selectio
n a
ndverificatio
n, etc. I
n the desig
n process, the desig
n ma
nual should be used correctly a
nd the calculatio
n of seeki
ng truth from facts should be do
ne to e
nsure the accuracy of the
numbers i
n the calculatio
ns. We must cultivate our ability to thi
nk i
ndepe
nde
ntly a
nd solve problems i
n a serious ma
n
ner so as to achieve the purpose of this graduatio
n project. Keywords: shearer；tractio
n；sectio
n gearbox；gear；pla
netary gear 目录 1概述1 1.1引言1 1.2电牵引采煤机概况1 1.2.1电牵引采煤机基本情况1 1.2.2电牵引采煤机的技术特点2 1.3电牵引采煤机的技术现状3 1.3.1国内电牵引采煤机现状3 1.3.2国外电牵引采煤机现状3 1.4采煤机的发展趋势4 1.5采煤机的组成4 1.6本次采煤机的设计目的5 2牵引部的设计6 2.1牵引部简述6 2.2牵引部传动方案的确定6 2.2.1设计原则6 2.2.2传动方案的选择7 2.2.3主要技术参数9 2.2.4电动机的选择9 2.2.5传动比的分配10 2.3牵引部传动计算11 2.3.1各级传动转速、功率、转矩11 2.3.2齿轮1和齿轮2的设计及强度效核13 2.3.3齿轮3和齿轮4的设计及强度效核18 2.3.4齿轮5和齿轮6的设计及强度效核24 2.4牵引部行星机构的设计计算31 2.4.1第一级行星齿轮的计算32 2.4.2第二级行星齿轮的计算38 3强度校核45 3.1Ⅱ轴的设计与校核45 3. 2对Ⅱ轴的轴承校核49 3.3对Ⅱ轴平键的校核50 3.3.1键Ⅱ的校核50 3.3.2键Ⅰ的校核50 3.4花键连接的强度校核51 4牵引部的总体52 4.1机械传动系统52 4.2牵引电动机52 4.3液压制动器53 4.4滑靴组架54 4.5调高油缸54 4.6与电控箱的连接部位55 5采煤机的使用和维护55 5.1采煤机的维护55 5.2采煤机轴承的维护及漏油的防治57 结束语60 参考文献61 致谢67