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建筑 钢筋 切断 设计 CAD 图纸

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徐州工程学院毕业设计(论文)摘要钢筋切断机是把钢筋切成所需长度的专用机械在大型建筑工地上的应用非常广泛。钢筋切断机分为机械传动和液压传动两种。机械传动式钢筋切断机,工作时大都采用电动机经一级三角带传动和二级齿轮传动减速后,带动曲轴旋转,曲轴推动连杆使滑块和动刀片在机座的滑道中作往复直线运动,使活动刀片和固定刀片相错而切断钢筋。 GQ40B型钢筋切断机，其剪切运动是由一曲型的曲轴连杆机构完成的。但是由于切断机机体内腔狭小，在装配曲轴连杆时比较困难。尤其是在使用中发生故障需要维修时，拆卸曲轴连杆更加不容易，给维修造成很大的不变，因此在不改变设备功能的情况下，我对曲轴连杆机构做了一些改进。改进后的凸轮结构直接从机体航的注册孔中装入和取出。而不必拆卸连杆，大大简化了装配程序，减轻的工人的劳动强度。同时也极大的方便了维修，还简化了零件的工艺过程，取得良好的经济效益。关键词钢筋切断机；凸轮；曲轴连杆机构AbstractReinforcing steel cutting machine is to cut the required length of steel machinery specialized for large construction sites in the application of very extensive. Reinforcing steel cutting machine into mechanical transmission and hydraulic transmission of two. Mechanical transmission reinforced cutting machine, working mostly used as a V-belt drive motor and gear drive slow down after two, driven crankshaft rotation, promoting the crankshaft and connecting rod to move the slider blade in the frame of the chute in a reciprocating linear motion So that the activities of the blade and a fixed blade and cut off the wrong steel. GQ40B-steel cutter, cut its movement from one type of linkage to complete the crankshaft. However, due to cut off the small inner cavity of the body, in the assembly when the crankshaft link more difficult. Especially in the use of a fault in need of repair, demolition crank link more difficult to repair a big change, so do not change the function of the equipment under the circumstances, we crank linkage has made some improvement. The improved structure of the cam directly from the body of the aircraft registered in the hole and packed out. Without dismantling the link, greatly simplifies the assembly, reduce labor intensity of workers. But also greatly facilitate the maintenance, has also simplified the process of parts and achieved good economic returns.Keywords Reinforcing steel cutting machine Cam Crankshaft Linkage目录1绪论11.1钢筋切断机的作用11.2钢筋切断机的机理11.2.1压入变形阶段11.2.2剪切滑移阶段21.2.3剪切滑移阶段作用力分析31.2.4剪切全过程剪力分析41.2.5综合分析41.3钢筋切断机理分析71.3.1目前钢筋切断机存在的问题91.3.2钢筋切断机前景102电动机的选择112.1计算剪切力P112.2切断机匹配电动机功率理论计算113减速器的设计133.1传动比的计算与分配133.2计算传动装置的运动和动力参数133.3带的选择143.3.1带的计算143.3.2带的根数确定153.4齿轮的设计及模数的选择153.4.1第一级齿轮传动设计153.4.2第二级齿轮传动设计方法同第一级设计173.5轴径的选择以及轴承的选择193.5.1轴径的计算193.5.2轴的校核203.6滚动轴承的选择计算233.7标准件244连杆的设计255提高强度的几种方法275.1机体强度提高的设计275.2改变压刀结构285.3其他部件的改进设计286钢筋切断机强度计算参考306.1机体额口的强度计算306.2应力计算316.2.1正应力计算316.2.2计算剪切力P316.3计算剪切力P326.3.1计算正应力326.3.2计算最大应力326.3.3试棒326.4测试方法326.