摘要
液压凿岩机的缓冲装置为吸收钎具反弹能量而设计,能够保护凿岩机并提高其工作可靠性。现有的缓冲装置分为单缓冲和双缓冲2种。对两者结构和工作原理进行了介绍,分过程建立了各自的数学模型。通过仿真分析,得到隔套和缓冲活塞一个周期内的位移曲线和速度曲线。比较两者的仿真曲线得出以下结论,双缓冲装置比单缓冲装置能在更短的时间、更小的位移内实现隔套和缓冲活塞的减速,并且复位终了时的末速度更小,所以缓冲效果更优。尽管在结构上稍有复杂,但双缓冲装置仍是大功率凿岩机的必然选择。
The damper mechanism＇s function is absorbing the rebounding energy of the drilling tools. The rock Drill＇s reliability could be improved with it. The existing damper mechanism is divided into two types, including single damper and double damper mechanism. By introducing the structure and working principle of the two types, each working process＇s mathematical model was built. Then, the sleeve and damping piston＇s one circle displacement curve and speed curve were achieved. Compared with the single damper system ,the double damper system could brake the sleeve and damping piston in a less displacement with less time. Besides, the speed of the sleeve and damping piston is smaller at the end of the reset process. All of these show that the double damper mechanism is better and it is the best choice of the rock drill with high impact power despite a bit complicated in structure.
出处
《煤矿机械》
2015年第3期166-168,共3页
Coal Mine Machinery
基金
"十二五"国家科技支撑计划项目(2013BAB02B07)
关键词
液压凿岩机
缓冲装置
仿真分析
性能比较
hydraulic rock drill
damper mechanism
simulated analysis
performance comparison
