Scientific use of techniques for maintaining rock drills
Rock drilling machine a simple, lightweight, economic excavation machinery, stone waste mining important machinery, belongs to the impact equipment, but also need oil, water and gas a variety of auxiliary media to use together, on the one hand, this equipment work reliability, safety put forward a higher requirements; The scientific use of maintenance rock drill is not only of great significance to ensure safe production and prevent malignant accidents, but also to improve the performance, working life and production efficiency of equipment.
Prepare before powering on
1, newly purchased rock drill, the interior coated with a large viscosity rust-proof grease, before use must be removed clearly. When reloading, each moving part, Mina, is oiled. After installation, the rock drill will be connected to the pressure trachea line, open a small wind operation, check whether its operation is normal.
2, to the automatic oil injectors into the lubricant, commonly used lubricants for 20, 30, 40, oil. The lubricant container should be clean, covered and prevent rock powder from entering the oil injector.
3, large-scale inspection of the workplace wind pressure water pressure. Wind pressure of 0.4-0.6MPa, high wind pressure will speed up the damage of mechanical parts, too low will reduce the efficiency of rock drilling rust mechanical parts. Water pressure is generally 0.2-0.3MPa, water pressure is too high then water will be poured into the machine internal damage lubrication, reduce the efficiency of the rock drill rust mechanical parts;
4, the use of brazing does not meet the quality requirements, non-conforming brazing is prohibited from use.
5, the duct access rock drill, should be degassed will be off the dirt blowing out. Water pipe money, to waterproof flushing joint dirt, wind pipe water pipe must be tightened, in order to prevent shedding injury.
6, the brazing tail inserted into the rock drill head, force clockwise turn the brazing, if not moving, indicating that there is a plug phenomenon in the machine, should be dealt with in a timely manner.
7, tighten the joint bolts, open air to check the operation of the thruster, normal operation to start work.
8, rail-type rock drill should be set up pillars, and check the operation of the thruster, air-leg rock drill up-type rock drill must check its gas leg flexibility and so on.
9, the hydraulic rock drill should require the hydraulic system has a good sealing, to prevent the hydraulic oil is contaminated, to ensure that the hydraulic oil has a constant pressure.
Precautions at work
1, eye opening should be slow to turn, waiting for the depth of the hole to reach 10-15mm, and then gradually into full operation. The rock drilling process, according to the hole design so that the brazing rod straight forward, and located in the core of the hole.
2, when drilling rock should be reasonable test drive shaft thrust. Shaft thrust is too small, the machine produces back jump, vibration increases, rock drilling efficiency is reduced;
3, rock drill card brazing, should reduce shaft thrust, you can gradually become normal. If not, shut down immediately. First use a wrench to slowly turn the brazing rod, and then open the air pressure to make the brazing slowly turn, prohibit the use of tapping the tool method to deal with.
4, often observe the powder situation. When the powder is normal, the mud flows slowly through the mouth of the hole; If it is still not valid, check the brazing tail status of the brazing hole, check the water needle situation, replace the damaged parts.
5, pay attention to observe the oil injection reserves out of the situation, adjust the amount of oil injection. When working without oil, it is easy to wear out parts prematurely. When there is too much oil, it can cause work surface contamination.
6, when operating should pay attention to the sound of the machine, observe its operation, find problems, timely treatment.
7, pay attention to the working status of the brazing, abnormal timely replacement.
8, the operation of the upward rock drill should pay attention to the air leg gas, to prevent the rock drilling machine swing caused by the accident. The air leg support points should be reliable. Do not hold the machine too tightly and cannot ride on the air leg to prevent injury to the machine.
9, pay attention to the rock situation, to avoid layering, sectional fissure perforation, prohibit the broken eyes, at any time to observe the risk of roofing, piece help.
10, to effectively use the opening function. Drilling process, there is an important link opening, opening with reduced impact pressure fixed propulsion pressure to complete. Propulsion pressure should be as small as possible to allow for holes in rock surfaces with very large slopes, while avoiding bending of the drill pipe.
