WZJ-300履带式隧道挖装机的研究与开发

隧道开挖多采用钻爆法,可以分段开挖,加快工程进度,与断面法相比施工成本低.钻爆法清理作业中需要高效的挖装机.通过对隧道挖装机双动力的匹配技术、工作装置的有限元分析技术、负荷传感液压系统技术、电控风扇冷却系统技术、电控系统技术等进行了研究后,完成样机试制,经国家工程机械质量监督检测中心性能和可靠性使用试验,表明达到了国内领先水平.

Research and development on WZJ-300 crawler tunnel heading and loading machines

To realize the phased excavation and accelerate the construction progress, the drilling-blasting method is frequently applied for tunnel excavation. Compared with the cross-sectional method, the low construction cost is attained. For relevant cleaning operation, the efficient tunnel heading and loading machines are demanding. By investigating into the machine dual-power matching, work device finite element analysis, load-sensing hydraulic system, electric fan cooling system and electric control system, a prototype is completed. Through a performance and reliability testing by the National Quality Supervision and In- spection Center for Construction Machinery, it is indicated that this machine reaches the domestically-leading level.