文档介绍：综合机械化采煤工作面机械选型设计(2010-2011学年第一学期)班级:学号:姓名:指导老师:20010年1月12日目录绪论···················································2第一节综采工作面机械·······································2第二节综采工作面参数·······································2滚筒采煤机的选型····································3对采煤机械的基本要求································3采煤机的选择原则·······························3第三节设计选用采煤机参数···································4第四节采煤机生产率的计算···································6第五节滚筒直径与截深·······································6支护设备的选型······································8第一节支护设备的用途和种类···························8第二节选型原则··············································8第三节支架选择内容·········································9第四节综采工作面适用支架··································10输送设备的配套选型································12第一节刮板输送机的选择···································12第二节转载机的选择········································13第三节可伸缩胶带输送机的选择····························13采煤设备的配套性能································15绪论第一节综采工作面机械综采工作面配套设备由采煤机、支护设备、,系指依据煤层赋存和矿井生产技术条件,可获得良好使用效果而实际选用的综采成套设备。综采工作面设备配套的目的,首先在于总体配套是单机设计的依据,要解决成套设备各单机间的能力相互匹配和空间几何关系的配套;其次在于使成套设备性能与采煤工艺间相互适应。因而总体配套又是采区设计和采煤工艺设计的依据。采煤工作面中,采煤机、刮板运输机和支护设备(液压支架或单体支柱于顶梁)等组成一个采煤机的有机整体来实现采煤工艺的哥哥工序,他们在工作能力和结构尺寸的配套关系,直接影响采煤工艺的顺利实施和设备能力的充分发挥。因此,为了正确的选择采煤机组各种设备的形式,不仅要看它们各自能否满足采煤工艺的要求,同时也要注意它们之间的配套性能,特别要把工作面“三机”——“采煤机、刮板输送机、液压支架”配套搞好,否则综采生产将无法进行,勉强生产也获得不了好效果。第二节综采工作面参数本次综采工作面的基本参数选定为原始参数第四组:工作面长:320m;倾角:12°;煤层平均厚度:;顶板中等稳定;截割阻抗:A=230N/m;煤的坚硬度系数:f=。第二章滚筒采煤机的选型第一节对采煤机械的基本要求对采煤机械的基本要求是高效、经济、安全。具体要求是:采煤机械的生产率应能满足采煤工作面的产量要求工作机构能在所给煤层力学特性(硬度、截割阻抗)的条件下正常截割、装煤效果好、落煤块度大、煤尘少、能耗低。能调节才高,适应工作面煤层厚度变化;能自开缺口。有足够的牵引力和防滑、制动装置,能在所给煤层倾角下安全生产;牵引速度能随着工作面条件的变化而调节,其大小能满足工作要求。此,要求采煤机械的性能必须可靠,维持正常工作所必需的各种消耗(动力、液压油、防滑油、易损件等)应较低。第二节采煤机的选择原则采煤机选型原则通常是要符合煤层赋存条件,满足对生产能力的要求,以及与刮板输送机和液压支架的匹配要求。并结合以下四点依据,确定采煤机的选型:,属于中厚煤层,可选用双滚筒采煤机。根据煤的力学性质选择采煤机械煤的力学性质主要包括煤的坚硬度系数f、抗压强度、截割阻抗A、韧性、层理和节理的发育情况、夹石含量及分布等。这些因素关系到选择采煤机械的工作机构形式和采煤机械的功率大小。根据煤的坚硬度系数f和截割阻抗A,将煤分为三类:软煤——f≤,A<1