机械5

JHMB-28慢速绞车设计 摘要 JHMB-28型慢速绞车是一种典型的矿山辅助搬运设备。该型绞车主要适用于煤矿井下有煤尘或爆炸性气体环境中在倾角小于30°的巷道牵引重物以及采煤工作面液压支架的撤移、调向和搬运之用。 本次设计的绞车主要采用齿轮-蜗杆传动系统传动，包括圆柱直齿轮传动和圆弧蜗轮蜗杆传动。蜗杆用轴向剖面为圆弧形的砂轮进行精加工，可获得较高的精度，具有承载能力大，传动效率高的优点，被广泛用于冶金、矿山、化工、建筑、起重等机械设备中。 该绞车结构紧凑，外形尺寸小；结构为近似布置，外形美观，成长条形，底座呈雪橇状，实现了可移动性，运转平稳，安全可靠，操作方便。 绞车又称为卷扬机,主要运用于建筑、水利工程、林业、矿山、码头等的物料升降或平拖,是用卷筒缠绕钢丝绳或链条以提升或牵引重物的轻小型起重设备。 本次设计的思路是先以给定的数据确定钢丝绳的直径参数，而后计算卷起钢丝绳的卷筒的各个尺寸参数，通过给定的数据推出电动机的转速和功率，从而选择电动机，确定传动比，再分配给各个减速器计算其各个参数，最后计算及校核各轴、联轴器、制动器等机构零件。 本文主要阐述了慢速绞车的发展和对慢速绞车的具体设计以及零部件的选用过程，本次设计中把两级齿轮分别装在电动机和卷筒的两侧，使结构紧凑，外形尺寸小，减少底座材料的使用降低了成本；成长条形，底座呈雪橇状，实现了可移动性，运转平稳，安全可靠，操作方便。由于该机器用于矿场上，所以必须具有一定的防爆能力，故而选用防爆电动机代替原来的鼠笼式电动机。 关键词：慢速绞车；圆弧蜗轮蜗杆；结构紧凑；可移动 DESIGN OF JHMB-28 LOW-SPEED WINCH Abstract The JHMB-28 slow wi
nch is a typical mi
ne auxiliary ha
ndli
ng equipme
nt. This type of wi
nch is mai
nly suitable for the removal, adjustme
nt a
nd ha
ndli
ng of roadway tractio
n weights with a
n i
ncli
natio
n of less tha
n 30 ° a
nd hydraulic support for coal mi
ni
ng face i
n coal mi
ne u
ndergrou
nd e
nviro
nme
nt with coal dust or explosive gas. The wi
nch mai
nly adopts gear-worm tra
nsmissio
n system, i
ncludi
ng cyli
ndrical straight gear tra
nsmissio
n a
nd circular worm gear tra
nsmissio
n. Worm with axial profile of Arc wheel for precisio
n processi
ng, ca
n obtai
n higher accuracy, has a large carryi
ng capacity, the adva
ntages of high tra
nsmissio
n efficie
ncy, is widely used i
n metallurgy, mi
ni
ng, chemical, co
nstructio
n, lifti
ng a
nd other mecha
nical equipme
nt. The wi
nch has compact structure a
nd small shape. The structure is approximately arra
nged, the appeara
nce is beautiful, the shape is lo
ng, a
nd the base is sleigh, which realizes mobility, smooth operatio
n, safe a
nd reliable, a
nd co
nve
nie
nt operatio
n.The wi
nch, also k
now
n as a hoist, is mai
nly used i
n the lifti
ng or towi
ng of materials such as buildi
ngs, water Co
nserva
ncy projects, forestry, mi
nes, a
nd docks. It is a light a
nd small lifti
ng device that uses a coil to twi
ne wire ropes or chai
ns to lift or pull heavy weights. The idea of this desig
n is to first determi
ne the diameter parameters of the wire rope with the give
n data, a
nd the
n calculate the dime
nsio
ns of the reel of the rolled wire rope, a
nd use the give
n data to derive the speed a
nd power of the motor, thus selecti
ng the motor. Determi
ne the tra
nsmissio
n ratio, Reassig
ned to each speed reducer to calculate its various parameters, a
nd fi
nally calculate a
nd check each shaft, coupli
ng, brake a
nd other i
nstitutio
nal parts. This paper mai
nly describes the developme
nt of slow wi
nch, the desig
n of slow wi
nch a
nd the selectio
n process of parts. I
n this desig
n, the two gears are i
nstalled o
n the sides of the motor a
nd reel respectively, so that the structure is compact a
nd the shape is small. The reductio
n i
n the use of base materials reduces the cost; I
n the shape of a lo
ng strip, the base is sledge-shaped, which realizes mobility, smooth operatio
n, safe a
nd reliable, a
nd easy to operate. Si
nce the machi
ne is used i
n the mi
ne, it must have a certai
n explosio
n-proof capability. Therefore, the explosio
n-proof motor is used i
nstead of the origi
nal rat cage motor. The wi
nch mai
nly adopts gear-worm tra
nsmissio
n system tra
nsmissio
n, i
ncludi
ng cyli
ndrical straight gear tra
nsmissio
n a
nd circular worm worm tra
nsmissio
n. Worm with axial profile of Arc wheel for precisio
n processi
ng, ca
n obtai
n higher accuracy, has a large carryi
ng capacity, the adva
ntages of high tra
nsmissio
n efficie
ncy, is widely used i
n metallurgy, mi
ni
ng, chemical, co
nstructio
n, lifti
ng a
nd other mecha
nical equipme
nt. Key words: slow wi
nch; Rou
nd arc worm worm; Compact structure; movable 目录 摘要i Abstract ii 1绪论1 1.1引言1 1.2概述2 1.2.1慢速绞车结构的分析2 1.2.2电气设备2 1.2.3制动部分2 1.3减速器3 1.4中间轴装置3 1.5卷筒装置3 1.6底座3 1.7慢速绞车的布置方式3 1.8国内外绞车的概述4 2总体设计7 2.1设计条件7 2.2原始数据7 2.3传动方案的拟定7 3电动机的选择9 3.1电动机类型和结构型式9 3.2系统的总效率9 3.3电动机的功率9 3.4电动机的转速10 4卷筒的确定11 4.1卷筒的概述11 4.1.1卷筒的结构11 4.1.2卷筒的材料11 4.2卷筒尺寸的计算11 5减速器的选择14 4.3减速器的主要型式及其特征14 4.4减速器的分类14 4.5常见减速器的特点14 4.6减速器的选择15 5联轴器的选择16 5.1联轴器的概述及分类16 5.2联轴器的选择16 7制动器的选择17 5.3制动器的概述17 5.4制动器的分类17 5.5制动器的选用17 6中间轴装置的设计19 6.1中间轴上高速级齿轮的设计19 6.2中间轴上低速级齿轮的设计22 6.3轴的设计计算25 6.4轴的作用25 6.4.1轴的分类25 6.4.2轴的设计计算26 7系统传动部件的校核27 7.1中间轴上键的校核27 7.2中间轴上轴承的校核28 结论29 参考文献30 致谢31