胶带煤流采样机机械CAD图纸设计.doc

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。 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 ABSTRACT Coal quality is the most important indication of commercial and processing or application. And obtaining credible testing result should depend on conventional testing processing. Among the 3 processing of sampling, making and test, sampling may cause the most serious errors, therefore, using the sampling machine should be one of the most effective means. The machine is the transmission system with motor as power that transmits drive through gear reducer, sprockets, and uses the rod on big sprockets that makes the focus of partial ship moving upwardly. Sampling time - interval is adjusted through time relay. Install the frame of sampling machine that coincides with the frame of belt conveyor. Entire drive device is set up on frame of sampling machine. This machine, organization is compact, manufacturing costs are low, sampling coal is accurate and reliable, and automation level is high.So it is an ideal tool of replacing artificial sampling and has extensive popularize application value. Key words: sampling; sampling machine; belt conveyor; auto - sampling 目 录 1 绪论 1 1.1煤样的采取与制备 1 1.1.1概述 1 1.1.2煤的不均匀性 1 1.1.3采样 2 1.2商品煤样的采取 2 1.2.1采样工具 2 1.2.2采样基本原则 3 1.2.3煤流中采样 4 1.2.4商品煤样自动采取 5 1.3选煤厂生产检查煤样的采取 5 1.3.1生产检查主要项目和采样一般原则 5 1.3.2采样间隔时间和子样质量 6 1.3.3采样点及采样方法 6 1.3.4采样精密度 7 1.3.5自动采样机 7 2 样机设计方案的确定 10 2.1刮臂式(回运动式)样机结构原理 10 2.1.1刮臂式采样机结构 10 2.1.2刮臂式采样机工作原理 11 2.1.3刮臂式采样机方案说明 11 2.2采样机整机方案示意图 11 3采样机的初步设计计算 12 3.1铲斗的设计 12 3.2接斗的设计 12 4偏心块的设计 13 4.1选择偏心块的材料 15 4.2计算每次采集煤样重量 15 4.3计算每次采集所需做的功 16 4.4计算偏心块的尺寸 16 4.5验算 17 5减速器的设计计算 18 5.1方案的确定 18 5.2计算传动装置的运动和动力参数 19 5.2.1电动机选型 19 5.2.2动力参数计算 19 5.2.3高速级齿轮参数计算 20 5.2.4低速级齿轮参数计算 29 5.3轴的设计计算 38 5.3.1高速轴（齿轮轴） 38 5.3.2低速轴 42 5.