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机械毕业设计全套

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JX01-072@S114型碾轮式混砂机的设计(混凝土),机械毕业设计全套

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盐城工学院毕业设计说明书 2006 S114 型碾轮式混砂机的设计 (总装及传动机构设计 ) 摘要 ： 课题来源于大丰市春城铸造机械厂。设计主要包括混砂机的传动部分，齿轮传动的设计，轴的设计与校核，混砂机总体结构的设计分析与计算。其中 S114 型碾轮式 混砂机减速机采用圆锥 +二级渐开线圆柱齿轮软齿面减速 方式， 不仅满足 了 混砂机传动装置传动比 大 和承载能力 高的 要求，而且 使 减速机具有结构简单，成本低，易于制造，安装、调整要求低，运行维护方便，可靠性更强 等特点。 在混砂机设计中，还采取了以下措施，以保证其技术先进性和经济合理性 :（ 1） 采用矮刮板，加强对型砂的混合搅拌作 用，并降低其功率消耗 ；（ 2） 加大卸砂门面积，缩短卸砂时间 ；（ 3） 采用辉绿岩铸石做底盘护板，增加其使用寿命，减少刮板磨损 ,改堆焊 WC（碳化钨）为直接焊接硬质合金刀片 ,针对强度不足 ,在刮板反面焊上加强筋以增加其强度 ,经改进后 ,一副刮板可正常使用 1 年左右 ,刮砂干净 ,结砂很少 ,负荷波动小。因此 ,设计具有较好的应用前景和实用价值。 关键词： 辗轮式混砂机；传动装置；密封；润滑；减速机 nts盐城工学院毕业设计说明书 2006 The Design of the S114 Roller Sand Mixer (the Design of the General Fitting and the Drive Gear) Abstract: The subject stems from the machine-casting factory of Chuncheng of Dafeng City. The design mainly includes the drive system of the sand mixer, the gear, the design and check of the axle, the analyzing and calculation of the general fitting. The S114 type sand-mixture machine uses a 2-stage spiral gear box which not only satisfies to machine transmission and the requirement of bearing capacity, but also makes deceleration facility simple, economical, contributes to manufacture, makes requirement of installation and adjustment low, and makes reliability strong. In the machine design, the following measures have been adopted in order to guarantee technology advancement and economy reliability. Welded WC (tungsten carbide) is adopted instead of direct welding blade of hard alloy According to strength. The scraper reverse sides of welds are enforced in order to increase its strength. After improvement, a pair of scraper may be used for one year in common. It is clean to scrape sand, with few knot sand and little load fluctuation. So, the design will have better prospect of application and practical value. Ke