电机车气制动设计.doc

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摘 要 本次毕业设计作为对四年所学专业知识的一次综合应用和全面的校验,设计共分主要部分,即一般部分和专题部分。一般部分为矿井四大件选型设计,专题部分为电机车的气制动改造设计。 一般部分内容主要是矿山固定机械设备的选型计算,包括:一矿井通风设备。二固定压气设备。三矿井排水设备。具体情况如下: 一、矿井通风设备:风机的运转参数可以依据已知条件(风量、矿井阻力)在风机性能曲线图上确定。在这里有两种不同风机 目 录 一般部分 矿山通、压、排设备选型计算 1 绪言·························································1 2 通风设备的选型计算·········································2 2.1 概述······················································2 2.2 主扇选型计算··············································2 2.2.1主扇的计算条件··········································2 2.2.2主扇选型方案·············································3 3室压机的选型设计···········································12 3.1 概述·····················································12 3.2 设计依据·················································13 3.3 压气设备的选型计算·······································14 3.4 压气设备选型方案比较与结论·······························19 4 矿井排水设备的选择·······································20 4.1概述······················································20 4.2 排水设备的选型计算·······································21 4.2.1排水设备选型计算条件····································21 4.2.2工作水泵必须的排水能力·································21 4.2.3泵的型式(级数)和泵台数的确定·························22 4.2.4管路及管路布置·········································23 4.2.5确定水泵运转工况点······································27 4.2.6排水设备验算···········································27 专题部分 电机车的气制动设计与计算 1 概述························································29 1.1电机车在井下运输的优点···································29 1.2电机车在实际使用过程中发现的问题及改装的必要性···········29 1.3电机车的基本结构··········································30 1.4空气系统概述及工作原理····································30 1.4.1空气系统概述············································30 1.4.2工作原理················································31 1.4.3压缩空气电机回路········································32 2 空气制动的设计与计算······································32 2.1 计算电机车整车的闸瓦最大总压力···························32 2.2 制动气缸的工作推力·······································33 2.3 计算及选择气缸直径················

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