What are the maintenance methods and precautions for DTH drilling rigs?

　　What are the maintenance methods and precautions for DTH drilling rigs? Installation of the unit: prepare the rock drilling space, and the space size can be determined according to the model and drilling method used for the drilling. Lead the air-water pipeline, lighting line, etc. to the vicinity of the working point for use. According to the needs of hole position design, ensure the reliable positioning of the drilling rig.
　　
　　Inspection before DTH drilling operation: When starting work, carefully check whether the gas and water pipelines are firmly connected, especially the connection between the feng shui pipe joint and the feng shui pipe must be firm to prevent trip injury, and no air leakage is allowed at each joint. Check whether the lubricator has been filled with organic oil. Check whether the screws, nuts, joints, etc. of each part have been tightened, and whether the various positioning is firm and reliable.
　　
　　Drilling operation procedure and unloading method:
　　
　　When opening the hole, first with a small impact work, propulsion force and low speed drilling, in order to facilitate the positioning of the brazing head, when the brazing head drills into about 10 cm, and then with the full damper impact, and appropriately increase the propulsion, increase the speed, carry out normal rock drilling work, after drilling a drill pipe to stop the fan motor operation and stop the impactor air supply and water, insert the fork into the drill pipe groove of the brazing device, so that the wind motor reverses, the slide plate retreats, so that the joint is disconnected from the drill pipe, and then the second drill pipe is connected for drilling, and so on.
　　
　　Unloading method: The drill rod unloading rod is semi-automatic, which is realized by the cooperation of the rod unloader, the carrier and the two forks and their fan motors. When unloading the rod, the rotary machine moves back When the second groove of the drill pipe is directly opposite to the square frame of the brazing gear, insert the second slot firmly with a fork, and then reverse the motor, when the four-square frame of the rod unloader is directly opposite to the first slot of the drill pipe, insert the second fork firmly, take out the first fork, manipulate the propulsion cylinder, so that the rod unloader drives the drill pipe back, when the second groove of the second drill pipe is aligned with the bracket groove, reverse the motor, when the screws of the two drill pipes are disengaged and remove the first drill pipe, so that each drill pipe is removed in turn.
　　
　　Notes during operation:
　　
　　Always pay attention to check the connection of screws, nuts and joints of various parts of the gas and waterway and the tightening of the rack and host.
　　
　　Pay attention to the working condition of the lubricator at any time, and check the lubrication of the fan motor and impactor. 　　Regularly clean the impactor and fan motor with gasoline or diesel fuel and observe the damage of the motor blades.
　　
　　Reversal is not allowed when drilling to avoid tripping of the drill pipe.
　　
　　When the machine stops working in a short time, a small amount of pressure air should be given to avoid sediment immersion into the impactor, and if it stops working for a long time, the impactor needs to be lifted 1-2 meters from the bottom of the hole and then fixed.
　　
　　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 cleaning inside the drill pipe to avoid sand mixed into the impactor to damage the mechanical parts or cause downtime accidents.
　　
　　When there is water accumulation on the working surface, a large diameter brazing head should be used to open the hole, and then insert the casing, and expose the casing to the ground 100-200 mm long to prevent the slag slurry from entering the hole.
　　
　　Drilling machine maintenance and lubrication:
　　
　　At the end of each work shift, the surface of the machine must be cleaned of dirt.
　　
　　It is strictly forbidden to disassemble and unload on the working surface (except when disassembled into components for easy handling), so as not to lose another piece and damage the key parts of another piece.
　　
　　Fill the lubricator regularly to ensure that the control valve, fan motor and impactor are well lubricated.
　　
　　The gearbox is lubricated with calcium-based grease oil, and lubricant is added regularly, and the lubricant occupies 1/3-2/3 of the void of the box body to ensure the lubrication of the gearbox.
　　
　　In the propulsion joint due to the relative movement of the skateboard and the carriage, the friction damage between the carriage and the pressure plate and the skateboard can be removed, and the adjustment pad under the pressure plate can be removed when the friction damage is heavier, and the pressure plate, skateboard or carriage can be replaced when the wear damage is heavier to ensure high drilling accuracy.
　　
　　For more information about DTH drilling rig, pay attention to our Hunan Ruisheng Electromechanical Equipment Co., Ltd., our official website is www.hnzega.com.