胶带煤流采样机设计说明书.doc

中国矿业大学08届本科生毕业设计论文第1页目录1绪论·····························································································11.1煤样的采取与制备··································································11.1.1概述············································································11.1.2煤的不均匀性·······························································11.1.3采样············································································21.2商品煤样的采取·····································································21.2.1采样工具······································································21.2.2采样基本原则·······························································31.2.3煤流中采样···································································41.2.4商品煤样自动采取·························································51.3选煤厂生产检查煤样的采取·····················································51.3.1生产检查主要项目和采样一般原则···································51.3.2采样间隔时间和子样质量···············································61.3.3采样点及采样方法·························································61.3.4采样精密度···································································71.3.5自动采样机···································································72样机设计方案的确定····································································102.1刮臂式(回运动式)样机结构原理··············································102.1.1刮臂式采样机结构·······················································102.1.2刮臂式采样机工作原理··················································112.1.3刮臂式采样机方案说明··················································112.2采样机整机方案示意图··························································113采样机的初步设计计算··································································123.1铲斗的设计·········································································123.2接斗的设计·········································································124偏心块的设计···············································································134.1选择偏心块的材料································································154.2计算每次采集煤样重量·························································15中国矿业大学08届本科生毕业设计论文第2页4.3计算每次采集所需做的功······················································164.4计算偏心块的尺寸································································164.5验算···················································································175减速器的设计计算········································································185.1方案的确定·········································································185.2计算传动装置的运动和动力参数·············································195.2.1电动机选型·································································195.2.2动力参数计算·····························································195.2.3高速级齿轮参数计算····················································205.2.4低速级齿轮参数计算····················································295.3轴的设计计算······································································385.3.1高速轴（齿轮轴）·······················································385.3.2低速轴·······································································425.4滚动轴承的选择计算·····························································435.5键联接的选择及校核计算······················································435.6减速器的润滑和密封形式······················································445.7减速器箱体设计···································································456链传动设计··················································································476.1滚子链的结构······································································476.2链轮材料·············································································486.3滚子链传动的设计计算·························································486.4滚子链链轮尺寸计算·····························································506.4.1滚子链链轮的基本参数和主要尺寸·································506.4.2三圆弧一直线槽形状尺寸计算·······································526.4.3轴向齿廓尺寸·····························································546.4.4整体式钢制小链轮主要结构尺寸····································546.4.5腹板式、单排铸造大链轮主要结构尺寸··························546.4.6滚子链链轮的量柱测量距MR········································556.4.7各项公差的确定··························································556.4.8绘制大小链轮图基本数据·············································567主轴的设计与校核········································································577.1选择轴的材料······································································57中国矿业大学08届本科生毕业设计论文第3页7.2初步确定轴最小直径·····························································577.3轴的结构设计······································································587.4轴的校核·············································································597.4.1铲煤过程的校核··························································597.4.2回程过程的校核··························································617.5轴的细部设计······································································658铲杆及曲柄的设计········································································678.1铲杆及铲斗的设计································································678.1.1计算最大过煤高度·······················································678.1.2计算铲杆尺寸·····························································688.1.3铲杆的设计·································································688.2曲柄的设计·········································································698.3机架的设计·········································································699控制系统设计···············································································7010采样机的安装·············································································7110.1产品用途···········································································7110.2主要技术参数·····································································7110.3产品结构···········································································7110.4产品特点···········································································7210.5电源连接···········································································7210.6操作及使用········································································7210.7采样机的维护·····································································72参考文献························································································73致谢···························································································82摘要煤炭质量是煤炭交易和加工应用的最主要的指标,获得可靠的测试结果必然依赖于规范的检测过程,在采、制、化三个环节中,采样过程中可能导致的偏差是最严重的,采用机械化采样设备是最有效的手段之一。中国矿业大学08届本科生毕业设计论文第4页胶带煤流采样机是以电机为动力,通过减速器及带轮传递驱动力,利用大带轮上的挡杆使偏心轮重心上移的传动系统。采样机采样间隔时间通过时间继电器来调节。采样机机架设置在带式输送机机架两侧,整个传动装置均设在采样机机架上。该机器机构紧凑,制造成本低,采样准确可靠,自动化程度高,是替代人工采样的理想工具,具有广泛的推广应用价值。关键词：采样；采样机；输送机；自动取样ABSTRACTCoalqualityisthemostimportantindicationofcommercialandprocessingorapplication.Andobtainingcredibletestingresultshoulddependonconventionaltestingprocessing.Amongthe3processingofsampling,makingandtest,samplingmaycausethemostseriouserrors,therefore,usingthesamplingmachineshouldbeoneofthemosteffectivemeans.