毕业设计--GQ70型钢筋切断机的设计

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1、1 本科生毕业设计（论文） 学院（系） ： 机械与汽车工程学院 专 业：机械设计制造及其自动化 学 生： 指导教师： 完成日期 2013 年 5 月 GQ70 型钢筋切断 机的 设 计 GQ70 型钢筋切断机的设计 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。 GQ70 型钢筋切断机，其剪切运动是由一偏心轮连杆机构完成的。但是由于

2、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。 改进后的偏心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；偏心轮；曲轴连杆机构 Design of GQ70 Reinforcing Steel Cutting Machine Abstract: Reinforcing steel cutting machi

3、ne 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

4、 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.

5、GQ70-steel cutter, cut its movement from one type of linkage to complete the crankshaft. GQ70 型钢筋切断 机的 设 计 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 mo

6、re 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 go