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Hanging boom down-the-hole drill rig operation video

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Hanging boom down-the-hole drill rig operation video [PDF]

5 FAQs about [Hanging boom down-the-hole drill rig operation video]

Conventional drilling rigs use the power of an electric motor or a diesel engine, which is transmitted to the turntable through the operating system to drive the drill bit connected to the drill rod to grind and cut the rock to achieve the purpose of drilling. This kind of drill first solves the ground power.

What are the disadvantages of a DTH drilling rig?

Conventional drilling rigs have cumbersome groundwork in bedrock drilling, frequent lifting and lowering of the drill, large labor consumption, slow speed, and comprehensive calculation of capital consumption, and these disadvantages are difficult to change. DTH drilling rigs mainly use compressed air.

How to drill a hole with a drill bit?

Specific operation method: whenever drilling begins, the operator must swing the drilling tools gradually to the bottom of the hole. When the frequency down the hole reaches 700~900 times/min and the pressure of the drilling tool on the drill bit reaches about 3kN, it can be the best impact speed.

What happens after re-swinging drilling tools?

After re-swinging the drilling tools, the process described above is repeated. It is the drilling method of intermittent tool swinging. This method of slagging times and slagging requirements with other methods are no different, generally about half a meter to clear the hole, slagging once.

How do you know when to swing a drill bit?

Through the impact sound of the hammer at the bottom of the hole and the change in the smoothness of the drilling rig’s turntable, we can judge the size of the pressure of the drilling tool on the drill bit and decide the time of swinging the drilling tool.

China Mining Drill Rigs Inc.