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1.故障现象1台古河T2R W-210-177Y型凿岩台车在进厂大修前进行技术检测时,检测人员发现,操纵该机外展臂举升到一定高度(不是最高处)停顿后再次上升时,外展臂先自动下降约15cm后,才能继续上升。该故障会给钻孔作业会带来不便,且存在安全隐患,为此决定对该故障进行排查。2.故障排查该凿岩台车外展臂举升缸为多级缸,分为内缸和外缸。当外缸(直径较
1. Fault phenomenon 1 Furukawa T2R W-210-177Y drilling rig before entering the plant overhaul for technical testing, the inspectors found that manipulation of the machine outreach arm lifted to a certain height (not the highest place) after the pause When rising again, the outreach arm will automatically drop about 15cm before it can continue to rise. The fault will cause inconvenience to the drilling operation, and there is a potential safety hazard, so we decided to investigate the fault. 2. Troubleshooting The rock drilling rig outreach arm lift cylinder for multi-stage, divided into the inner cylinder and outer cylinder. When the outer cylinder (diameter more