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2019-07(1) to obtain first-hand underground geological physical data, that is, from the borehole to remove core, core, cuttings or liquid, gas samples, if necessary from the hole wall supplement wall rock sample ore samples;(2) as a geophysical log…
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2019-07Drill rod-the drill rod used in the tunnel project is to connect the drill bit and the drill tool. The drill rod commonly used in the mine tunnel project is hexagonal hollow steel and hollow round steel. The inner round diameter of hexagonal…
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2019-07When digging a hole, the drill bit rotates around the vertical shaft and moves axially at the same time. The soil is cut under the action of torque and axial force of the drill bit, destroyed and crushed under the action of extrusion and ce…
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2019-07It is suitable for the installation and disassembly of drill bits of various drilling machines. Installation and disassembly are convenient and reliable.1. Drill bit installationSlowly lift the drill box body, put the four legs of the drill…
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2019-071. The drill bit should be packed in a special packing box to avoid vibration collision.2. When in use, the drill bit taken out of the packing box shall be loaded into the collet chuck of the spindle or the tool magazine for automatically re…
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2019-07Lets talk about its five most basic components: cylinder barrel and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device.The working principle of each cylinder is almost the same. Take a manual jack as an ex…
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