潜孔钻机推进油缸缸内缓冲装置的设计与研究

Design and Research of the Buffer Device in the Propulsion Cylinder of the Down-the-Hole Drilling Rig

摘要: 为有效解决潜孔钻机推进油缸在行程末端出现的缓冲性能差的问题，以国产某型潜孔钻机推进油缸为研究对象，根据实际工况需求，设计了一种缸内缓冲装置，分析其缓冲原理，建立缓冲过程的数学模型，并采用计算机仿真技术研究了缓冲过程中缓冲腔压力与活塞杆速度变化，最后搭建缓冲装置的实验方案进行实验研究。研究结果表明，缸内缓冲装置可以具有良好的缓冲性能，可以有效降低潜孔钻机推进油缸的高速冲击。

Abstract: In order to effectively solve the problem of poor cushioning performance at the end of the stroke of the thrust cylinder of the down-the-hole drilling rig, a domestically-made down-the-hole drilling rig thrust cylinder was used as the research object. According to the actual working conditions, an in-cylinder cushioning device was designed and its cushioning was analyzed. Principle, establish a mathematical model of the buffer process, and use computer simulation technology to study the buffer chamber pressure and piston rod speed changes during the buffer process, and finally build an experimental program of the buffer device for experimental research. The research results show that the in-cylinder cushioning device can have good cushioning performance and can effectively reduce the high-speed impact of the propelling cylinder of the down-the-hole drilling rig.