1.When the slewing device drops to the lowest point, the slewing device is raised to facilitate the flat side of the wrench on the drill pipe to be inserted into the position of the connecting and unloading rod wrench, stop the rotation and feed, and turn off the impact air pressure.；
2.Insert the connecting and unloading rod wrench into the flat part of the drill pipe and lower the swivel so that the connecting and unloading rod wrench is placed on the support rod.；
3.Reverse rotation, connect the unloading rod wrench to collide with the retaining pin on the locator; loosen the upper and lower drill pipe joints；
4.Let the rotary head slowly lift while rotating until the joint and the drill pipe are completely released. At this time, the drill pipe is close to the receiving and unloading rod and the wrench is suspended on the locator.；
5.Grease the drill pipe thread and cover the drill pipe with a thread protection cap；
6.Apply grease to the next drill pipe thread；
7.By manipulating the handle of the hoist motor, the drill pipe is hoisted in the appropriate position in front of the rotary device, the pre-part of the drill pipe is aligned with the axis of the rotary device, and the hoist motor is slowly raised. At the same time, the rotary device is turning forward, and the drill pipe is loaded into the extension rod of the rotary device.
8.Manipulate the handle of the hoist motor to exit the positioning sleeve and lifting hook from the drill pipe.
9.Push the impact handle and spray the drill pipe clean with compressed air；
10.Remove the threaded protective cap of the previous drill pipe and slowly descend the rotary device.At the same time, slowly forward and align the drill pipe with the axis until the drill pipe is tightened.；
11.Gently lift the swivel and remove the wrench from the receiving and unloading rod；
12.At this point, the drill pipe is connected and installed.
Post time: Dec-09-2022