5.槽段开挖多头钻挖槽机属无杆钻机,由组合多头钻机、机架和底座3部分组成,所有配套的起重设备、仪表以及测斜、测钻压、测钻速、测功率等的装置都安装在底座上。组合钻机的机头一般由3～5台潜水钻机、砂石泵、吸泥器及其他附属设备组成。机头由5吨慢速卷扬机提升,采用钢丝绳自由悬挂,无动力下 5. Slot excavation Multi-headed drilling machine is a rodless drilling rig, consisting of a combination of multi-head drilling rig, frame and base 3 parts, all supporting lifting equipment, instruments and inclinometer, drilling pressure, drilling speed, measuring Power and other devices are mounted on the base. The head of the combined drilling rig is generally composed of 3 to 5 submersible drilling rigs, gravel pumps, suction dredges and other ancillary equipment. The nose is lifted by a 5 ton slow hoist and is free to hang with a wire rope, without power