集束式潜孔锤气流调节机构同步特性的分析

Analysis of Synchronous Characteristics of Cluster Type DTH Hammer Air Flow Regulating Mechanism

针对现有集束式潜孔锤钻孔凿岩作业时集中气流无法调节的问题,设计一种气流调节机构。集束式潜孔锤气流调节机构采用多油缸驱动。为保证气流能够均匀调节及分配,要求驱动油缸运动时保持同步。采用双同步阀控制三缸同步;分析同步阀的机械结构及工作原理,建立同步阀的数学模型;通过试验验证不同负载下双同步阀控制调节机构的同步特性。结果表明:在均匀负载状态下,三缸同步特性较好,随着负载偏载载荷加大,三缸同步特性变差。

Aiming at the problem that the concentrated air flow cannot be adjusted during the cluster DTH hammer operating,an air flow adjustment mechanism was designed.The cluster DTH hammer air flow adjustment mechanism was driven by multiple cylinders.In order to ensure that the air flow can be adjusted and distributed evenly,it is required to maintain synchronization when the driving cylinder is moving.A double synchronous valve was used to control the three-cylinder synchronization;the mechanical structure and working principle of the synchronous valve were analyzed,and the mathematical model of the synchronous valve was established;the synchronization characteristics of the dual-synchronous valve control and adjustment mechanism under different loads were verified by test.The results show that the three-cylinder synchronization characteristics are better under uniform load conditions,and the three-cylinder synchronization characteristics become worse as the load eccentric load increases.