机械5

带式运输机设计 摘要 带式运输机是一种重要的物料搬运机械，是在沿一定输送路线设置的输送带上输送一定种类货物或人员的机械装置，带式输送机可以减轻人力物力投入，在短时间运送大批散粒物品，提高工作效率。目前带式输送机的应用已经十分广泛，在许多生产过程中成为关键或重要的辅助设施。 带式运输机靠驱动滚筒对缠绕在其上的输送带的摩擦力驱动。输送机两端的滚筒和拉紧装置将输送带张紧，滚筒和输送带之间产生强大的压力，驱动滚筒旋转从而产生摩擦力。输送带承受的张力由各种阻力组成，并且是机械功耗所在，计算出各种阻力的总和即可求得该输送机的功率。输送带上张力必须足够大，以免磨擦力太小输送带打滑或者输送带下垂过多。因此输送带必须有一定的韧度，以防止被巨大的张力拉断。 输送带在输送物料时，在托辊组上保持II形或其他形状以保证物料不会撒出。在新型的圆管带式输送机中，输送带在承载段呈圆管状，可更好地将物料密闭起来，并且还有很多其他优点。 输送机设计基本参数：运输能力、垂直和水平运距、运动速度、各大机构的尺寸大小等。输送能力是设计、选用输送机械的主要依据，水平、垂直运距关系着驱动功率的计算，它们是设计原始数据。带式运输机的运动速度指的是运输机牵引各大机构运动的速度，也就是输送带的运动速度，该参数不仅对运输机的输送能力起决定性的作用，与此同时而且还影响输送机的安全度、准确度、能否有效快速的达到运输的目的和作用。在使用运输机时，我们必须根据各类运输机型号、需要被输送的物品的特点以及运输的环境来选择正确的运输机运动速度。主要工作构件主要指带式输送机的带宽，根据设计输送能力来计算和选定。 带式输送机主要由一下各部件来组成：输送带、驱动装置或电动滚筒、传动滚筒、改向滚筒、多边形托辊组、过渡托辊组、框架、锁紧系统、清扫装置、中间架、填料系统、安全保护系统等。设计时必须根据各种参数条件和选用规则来选择使用。 在设计带式运输机时我们必须根据该运输机的工作地点、工作环境以及用户所要求的条件来对其进行客观而合理的设计。 关键词：带式运输机；设计 Abstract Belt co
nveyor is a ki
nd of importa
nt material ha
ndli
ng machi
nery, is alo
ng the tra
nsport route set co
nveyor belt co
nveyi
ng a certai
n types of goods a
nd perso
n
nel mecha
nism, belt co
nveyor ca
n reduce ma
npower i
nputs, i
n a short time tra
nsporti
ng large armies of grai
n goods, improve the work efficie
ncy. Belt co
nveyor has o
n ma
ny occasio
ns as key equipme
nt or importa
nt auxiliary machi
nery, ca
n be widely applied. Belt co
nveyor by drivi
ng drum of the frictio
n wi
ndi
ng o
n the co
nveyor belt drive. At the e
nds of the co
nveyor roller a
nd te
nsio
n device will co
nveyor belt te
nsio
n, stro
ng pressure betwee
n rollers a
nd co
nveyor belt, drive roller rotatio
n to produce frictio
n. Co
nveyor belt te
nsio
n u
nder is composed of all ki
nds of resista
nce, a
nd mecha
nical power co
nsumptio
n, calculate the sum of all ki
nds of resista
nce ca
n be obtai
ned by the power of the co
nveyor. Co
nveyor belt te
nsio
n must be large e
nough to avoid excessive frictio
n force is too small or droopi
ng co
nveyor belt co
nveyor belt skid. Co
nveyor belt must have a certai
n tough
ness, therefore, i
n order to preve
nt the pulled by huge te
nsio
n. Whe
n co
nveyor belt co
nveyi
ng material, keep o
n supporti
ng roller group II shape or other shapes to make sure that the material wo
n't be out. I
n the
new type of belt co
nveyor, co
nveyor belt i
n beari
ng sectio
n assumes the circular tube, ca
n better material closed up, a
nd there are ma
ny other adva
ntages. Co
nveyor desig
n the mai
n parameters are tra
nsmissio
n capacity, vertical a
nd horizo
ntal dista
nce, worki
ng speed, the feature sizes of the mai
n compo
ne
nts, such as drivi
ng power. Desig
n, selectio
n of tra
nsmissio
n capacity is the mai
n basis of co
nveyi
ng machi
nery, horizo
ntal a
nd vertical dista
nce of relatio
ns with the calculatio
n of drivi
ng power, they are desig
ni
ng the raw data. The work of belt co
nveyor speed refers to the speed of tractio
n compo
ne
nts, the work of the co
nveyor belt speed, is crucial
not o
nly to the tra
nsmissio
n capacity, but also i
nflue
nce o
n the reliability of the co
nveyor, eco
nomy a
nd quality of work, etc. Must be based o
n differe
nt models, the characteristics of material to be delivered a
nd specific tra
nsportatio
n co
nditio
ns to select reaso
nable worki
ng speed. Mai
n work compo
ne
nt refers to the ba
ndwidth of the belt co
nveyor, calculated a
nd selected accordi
ng to the desig
n of tra
nsmissio
n capacity. Drivi
ng power depe
nds o
n the co
nveyi
ng machi
nery ru
n
ni
ng resista
nce, reflect the size of e
nergy co
nsumptio
n, the relatio
nship betwee
n the belt co
nveyor power pla
nt size, weight, i
nvestme
nt a
nd operati
ng costs. Compo
ne
nts are: belt co
nveyor belt, drivi
ng device or electric drum, drum, drum of haul, polygo
ns, roller, frame, tra
nsitio
n roller group, te
nsio
n device, sweeper, frame, feed hopper, electrical, a
nd safety protectio
n device, etc. The desig
n a
nd selectio
n rules must be based o
n various parameters to choose to use. Belt co
nveyor must be o
n the basis of usi
ng the site topography, e
nviro
nme
ntal co
nditio
ns a
nd the user's specific requireme
nts for desig
n. Key words: belt co
nveyor; desig
n 目录 绪论···································1 第一章设计理论································2 1.1圆管带式输送机设计计算步骤····················· 2 1.2圆管带式输送机设计主要参数······················ 2 1.3圆管带式输送机部件选型依据······················3 1.4圆管带式输送机的运行阻力······················5 1.5圆管带式输送机的电路选择······················ ·5 1.6圆管带式输送机设计时的重要事件··················· ·6 第二章计算说明·································7 2.1原始数据································7 2.2初定设计参数······························7 2.3运输能力的验算····························7 2.4驱动圆周力计算···························· 7 2.5输送机功率计算···························· 8 2.6输送带张力计算···························· 9 2.7输送带强度校核···························· 10 2.8确定输送带及驱动装置·························10 2.9拉紧装置计算·······························10 2.10校核辊子载荷·····························10 2.11确定托辊组尺寸····························11 2.12确定中间架·······························11 2.13输送带空间弯曲校核··························13 2.14确定头架、尾架···························· 13 2.15导料槽及加料漏斗···························13 2.16流量自动控制系统设计························· 14 2.17过渡托辊组······························ 15 2.18重锤拉紧装置拉紧行程·························15 2.19整机长度验算·····························15 2.20主要计算参数总结·························· 16 结束语··································17 参考文件·································18