GQ70型钢筋切断机的设计
Design of GQ70 Reinforcing Steel Cutting Machine
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
Reinforcing 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.
GQ70-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.
crane; hoisting mechanism; reducer
目 录
1绪论 ...................................................................... 2
1.2.1压入变形阶段 ....................................................... 2 1.2.2剪切滑移阶段 ....................................................... 3 1.2.3剪切滑移阶段作用力分析 ............................................. 4 1.2.4 剪切全过程剪力分析 ................................................ 5
1.3.1目前钢筋切断机存在的问题 .......................................... 10 1.3.2钢筋切断机前景 .................................................... 10 2电动机的选择 ............................................................. 11
3减速器的设计 ............................................................. 13
3.3.1 带的计算 .......................................................... 14 3.3.2带的根数确定 ...................................................... 15
3.4.1第一级齿轮传动设计 ................................................ 15 3.4.2第二级齿轮传动设计方法同第一级设计 ................................ 18
3.5.1轴径的计算 ........................................................ 20 3.5.2轴的校核 .......................................................... 21
4连杆的设计 ............................................................... 24 5提高强度的几种方法 ....................................................... 26
6钢筋切断机强度计算参考 ................................................... 29