How to change the rod changer of down-the-hole drilling rig

How do you loosen a drill rod?

Loosening stage: after clamping the two drill rods, drive the unloading rod cylinder to rotate the upper and lower clamping cylinders relative to each other by a certain angle to loosen the threaded connection between the two drill rods.

How to install a drill rod unloader?

Preparation stage: first, open the clamps above the rod unloader seat. Then, position the drill rod to be connected to the rod unloader, ensuring that the upper and lower drill rods and the swivel head main shaft are all aligned concentrically with the drill rod to be connected.

What is jk730-2 crawler mounted automatic rod exchange DTH drill rig?

JK730-2 crawler mounted automatic rod exchange DTH drill rig is a hydraulic DTH drill rig. It is equipped with automatic rod changer for rod storage, changing and connecting automatically, as well as hole locating device and luxurious cabin. Safe and comfortable operation environment substantially reduces labor intensity and curtails labor numbers.

What is rod connection & removal?

Rod connection and removal are crucial aspects of down-the-hole drill operations, directly impacting overall work efficiency and the service life of rock drilling tools.

What is a down-the-hole drill?

In mining, tunneling, and geotechnical engineering, down-the-hole drills are core equipment, and their operating efficiency and stability are directly related to project progress and cost control.

How do you remove a rotary head motor?

Removal stage: operate the upper clamping cylinder, clamp the drill rod to be removed again, reverse the rotary head, loosen the connection thread with the main shaft, push the oil cylinder to lift the rotary head motor to the top of the guide rail, loosen the upper clamping cylinder, and remove the drill rod.