机械5

目录 1前言·································································································································1 2本课题介绍及设计理论·································································································2 2.1概述······························································································································2 2.2斗式提升机的工作原理······························································································2 2.2.1斗式提升机分类·········································································································2 2.2.2斗式提升机的装载和卸载························································································2 2.2.3常用斗提机选用及相关计算···························································································3 2.2.4斗式提升机的主要部件···························································································5 2.2.5斗式提升机的工作原理···························································································6 3.提升机主要参数确定及主要结构设计········································································8 3.1提升功率的确定··········································································································8 3.2电动机选择··················································································································9 3.3减速机选择··················································································································9 3.4驱动轴设计及附件的选择···························································································9 3.4.1轴的材料及热处理···································································································9 3.4.2轴的结构设计···········································································································9 3.4.3轴的强度校核计算·································································································10 3.4.4轴承选用·················································································································12 3.4.5键的设计校核·················································································································13 3.5联轴器的选择································································································13 3.6驱动链轮的结构设计···························································································15 3.7提升机主要参数的计算····························································································15 3.8头部罩壳的选材及连接····································································································16 3.9中部区段的设计选材········································································································16 3.10料斗与环链的设计··························································································17 4结论·······························································································································19 参考文献···························································································································20 致谢···································································································································21 附录···································································································································22 1前言 斗式提升机广泛用于垂直输送各种散状物料，国内斗提机的设计制造技术是50年代由前苏联引进的,直到80年代几乎没有大的发展。自80年代以后,随着国家改革开放和经济发展的需要,一些大型及重点工程项目从国外引进了一定数量的斗提机,从而促进了国内斗提机技术的发展。有关斗提机的部颁标准JB3926—85及按此标准设计的TD、TH及TB系列斗提机的相继问世,使我国斗提机技术水平向前迈了一大步,但由于产品设计、原材料、加工工艺和制造水平等方面的原因,使产品在实际使用中技术性能、传递扭矩、寿命、可靠性和噪声等与国际先进水平相比仍存在相当大的差距。 斗式提升机按牵引形式主要分为胶带式、圆环链式和板链式三种,因经济条件、技术水平及使用习惯等原因,国内用户对圆环链式和胶带式斗提机需求量较大,这两种斗提机的技术发展受到较多的关注,而且有较为明显的发展。TH型是一种圆环链斗式提升机，采用混合式或重力卸料，挖取式装料。牵引件用优质合金钢高度圆环链。中部机壳分单、双通道两种形式为机内重锤箱恒力自动张紧。链轮采用可换轮缘组合式结构。使用寿命长，轮缘更换工作简便。下部采用重力自动张紧装置，能保持恒定的张紧力，避免打滑或脱链，同时料斗遇到偶然因素引起的卡壳现象时有一定的容让性，能够有效地保护下部轴等部件。该斗式提升机适用于输送堆积密度小于1.5t/m3易于掏取的粉状、粒状、小块状的底磨琢性物料。如煤、水泥、碎石、砂子、化肥、粮食等。TH型斗式提升机用于各种散状物料的垂直输送。适用于输送粉状、粒状、小块状物料，物料温度在250℃以下。