毕业论文__颚式破碎机的结构和电气部分设计.docVIP

毕业论文 颚式破碎机的结构和电气部分设计 摘 要 颚式破碎机经过100多年的实践和不断改进，其结构已日益完善。它具有构造简单、工作可靠、制造容易、维修方便等特点。所以，至今任然是粗碎和中碎作业中最重要和使用最广泛的一种破碎机械。它不但在建材工业，也在冶金、煤炭、化工等工矿企业中被广泛地采用着。颚式破碎机主要用来破碎应力不超过200Mpa的脆性物料。如铁矿石、金矿石、钼矿石、铜矿石、石灰石和白云石等。在建材工业中它主要用来破碎石灰石、水泥熟料、石膏、砂岩等。 近年来，随着露天开采比重的增加和大型挖掘机、大型自卸汽车的采用，露天矿运往破碎车间的矿石粒度达1.5～2m。同时被采矿石的品位日益降低，要保持原有生产量就必须大大增加开采量和破碎量。因而就使破碎机朝着大型、高生产率的方向发展。目前，国外生产的简摆颚式破碎机的最大规格是2100mm×3000mm，复摆颚式破碎机的最大规格是1500mm×2000mm。 关键词：粉碎，颚式破碎机，破碎。 Abstract The structure of jaw type crusher has been being perfected though unceasing improvement and the practice of process with more than 100 years. It is characteristic with simple structure, working reliablly, producing easily，maintenance conveniently and so on. Therefore, so far it still is a kind of the most important and extensivily used crusher weapons ，which work in crushing for rough powder and medium-sized powder .It is extensively used not only in building material industry , also in the metallurgical industry ，in coal industry ，in chemical industry and other industrial and mining enterprises. Jaw type crusher is mainly used in crushing the brittleness material which stress does not exceed 200 Mpa. As Iron ore, golden ore, molybdenum ore, copper ore, limestone，and so on. In building material industry, it is mainly used in crushing limestone and cement , plaster ,sandstone etc.. In recent years, along with the increase of the proportion of opencast working , adopting of large scale exavator and large scale dump truck, the ore transported from open-cast to broken workshop which size reach 1.5 ～ 2 m. At the same time, the grade of mining stone is reduced increasingly, we must increase mine quantity and broken quantity greatly in order to maintain original production. Thus the crusher is developing towards large-scale, the high productivity direction. Now, Abroad, the biggest specifications of letter pendulum jaw type crusher of production is 2100 mm×3000mm and the jaw type crusher of compound pendulum is 1500 mm×2000mm. Key word: