全液压车载钻机给进回路负载特性分析及设计

发布时间：2018-03-23 09:55

本文选题：车载钻机　切入点：给进回路　出处：《煤田地质与勘探》2017年06期

【摘要】：给进装置是车载钻机的主要执行机构之一,其性能直接影响钻机技术性能的发挥。目前,全液压车载钻机的给进装置大多采用的是两根油缸通过钢丝绳带动动力头运动的伸缩桅杆式结构,结构紧凑,给进行程长。在分析全液压车载钻机给进装置主要工序和负载特性的基础上,ZMK5530TZJ100型车载钻机设计了双泵、双回路控制的液压控制系统,满足快速起下钻及精确钻压控制的正常钻进需求;通过油缸无杆腔贴装防爆阀实现给进装置的可靠悬停功能,避免管路破裂或误操作时钻具自由下落造成的顿钻事故,两个防爆阀可以同步控制油口,并联在一起使两个给进油缸的无杆腔压力相等,保证两油缸同步运行。ZMK5530TZJ100型车载钻机在晋城寺河矿完成了1 675 m的"L"形试验钻孔,验证了给进回路设计的合理性和可靠性。
[Abstract]:The feed device is one of the main actuators of the on-board drilling rig, and its performance directly affects the performance of the drilling rig. At present, The feeding device of the full hydraulic truck drilling rig mostly adopts a telescopic mast structure with two oil cylinders driving the movement of the power head through the wire rope, and the structure is compact. On the basis of analyzing the main working procedures and load characteristics of the feeding device of the full hydraulic vehicle drilling rig, a hydraulic control system with double pump and double loop control was designed for the ZMK5530TZJ100 truck drilling rig. To meet the normal drilling requirement of rapid down drilling and accurate drilling pressure control, to realize the reliable hovering function of the feeding device by installing explosion-proof valve in the cylinder without rod cavity, and to avoid stopping drilling accidents caused by the free fall of the drill tool when the pipe is broken or misoperated, The two explosion-proof valves can control the oil mouth synchronously, and in parallel connection make the pressure of the rod less cavity of the two oil tanks equal, and ensure the simultaneous operation of the two cylinders. ZMK5530TZJ100 vehicle drilling rig has completed 1675m "L" shape test drilling in Jincheng Sihe Mine. The rationality and reliability of the design of feed loop are verified.
【作者单位】：煤炭科学研究总院;中煤科工集团西安研究院有限公司;
【基金】：国家科技重大专项课题(2016ZX05045-001)~~
【分类号】：TD421

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