1.Brief introductions of QTZ-3D electric soil sampling drilling rig QTZ-3D electric soil sampling drilling rig is an electric version of the QTZ-3 soil drilling rig (gasoline engine). The improvement of QTZ-3D electric soil sampling drilling rig is mainly engine system. While QTZ-3 soil sampling drilling rig is equipped with gasoline engine, QTZ-3D is powered by electric. The QTZ-3D electric soil sampling drilling rig selects pure copper winding two phase electric motor as a power source. The advantage of using the electric engine as the power source is its stability, and it can continuously improve the working efficiency with a certain kind of power operation equipment. It greatly improves the feed speed. In addition, QTZ-3D electric soil sampling drilling rig is easy to operate, safe and stable, and can greatly reduce the labor force during the drilling operations. 2.Applications of QTZ-3D electric soil sampling drilling rig ·geotechnical investigation ·environmental soil survey ·gricultural soil survey ·groundwater survey ·coastal geological survey ·wetland environmental investigation ·tailing pond investigation ·archaeological investigation ·physical chemistry exploration secondary halo sampling ·the description of soil structure 3.Technical parameter s of QTZ-3D electric soil sampling drilling rig QTZ-3D electric soil sampling drilling rig Voltage 220v Power 3.6kw Lighter way switch mode Energy dissipation low power consumption Impact times 2600min/m Impact energy 60j-79j Core depth 15m-20m Host weight 22kg