How does a DTH drilling rig operate correctly in a drilling operation?

　　What is the correct use of DTH drilling truck in drilling procedures and unloading rods, follow the editor of Hunan Ruisheng Electromechanical Equipment to take a look.
　　
　　When drilling, drill with less impact, propulsion and lower rotational speed to facilitate the positioning of the drill bit. When the drill bit is drilled about 10 cm, use the full damper to impact, appropriately increase the propulsion force, increase the speed, and carry out normal drilling work. After drilling the drill pipe, stop the operation of the air motor, stop supplying air and water to the impactor, insert the fork into the drill pipe slot of the drill pipe holder, reverse the air motor, slide back, disconnect the drill pipe joint, and then connect the second drill pipe for drilling and continue to work. Unloading method: The unloading rod of the drill pipe is semi-automatic and is realized by the reverse fit of the rod unloader, the filler clamp, two forks and the air motor. When the rod is unloaded, the rotating machine moves backwards. When the second groove of the drill pipe aligns with the four squares of the drill pipe retainer, the fork is inserted into the second groove and the motor is reversed. When the four squares of the rod unloader are aligned with the first groove of the drill pipe, insert the second fork into the second groove, remove the first fork, operate the push cylinder, and the rod unloader drives the drill pipe to move backward. When the second groove of the second drill pipe is aligned with the groove of the drill pipe holder, the motor reverses, and after the threaded fasteners of the two drill pipes are disengaged, the first drill pipe is removed, so that each drill pipe is unloaded sequentially.
　　
　　Notes during operation:
　　
　　Be careful to check the connection of screws, nuts and fittings in each part of the airway and waterway, as well as the fastening of the rack and main unit.
　　
　　Check the working status of the injector at any time, and check the lubrication of the air motor and impactor.
　　
　　Clean the impactor and air motor regularly with gasoline or diesel and observe the damage to the motor blades.
　　
　　Reverse rotation is not allowed during drilling to avoid the drill pipe from rising and falling.
　　
　　When the machine stops working for a short time, a small amount of air pressure should be applied to prevent deposits from entering the impactor. If the machine stops working for a long time, the impactor should be lifted 1-2 meters from the bottom of the hole before fixation. During the work, attention should be paid to whether the sound of the impactor and the operation of the machine are normal, and the abnormal phenomenon should be stopped immediately for inspection.
　　
　　When adding new drill pipe, special attention should be paid to the cleaning inside the drill pipe to prevent sand from mixing into the impactor, damaging parts or causing downtime accidents.
　　
　　When working on water in the working area, a large diameter drill bit should be used to open the hole and then insert the casing, which should be exposed to the ground 100-200 mm long to prevent slag mud from entering the hole. 　　Drilling machine maintenance and lubrication:
　　
　　At the end of each shift, dirt must be removed from the surface of the machine.
　　
　　It is strictly forbidden to disassemble and disassemble parts on the working face (except when the parts are easy to handle) to avoid losing another part and damaging critical parts of another part.
　　
　　Proper oil is added to the injector to ensure good lubrication of the control valve, air motor and impactor.
　　
　　The reducer should be lubricated with calcium-based grease and oil. Lubricants should be added regularly. The lubricant should occupy 1/3-2/3 of the reducer gap to ensure the lubrication of the reducer. The sliding plate, pressure plate, and sliding plate are damaged due to the relative movement of the sliding plate and the sliding frame in the pushing joint. When the skateplate is slightly damaged, the adjusting pad under the pressure plate can be removed, and when the friction loss is large, the pressure plate, skateboard or slide frame can be replaced to ensure high drilling accuracy.
　　
　　To learn more about DTH drilling rig, pay attention to our Hunan Ruisheng Electromechanical Equipment Co., Ltd., our official website is www.hnzega.com.