How to use rock drill properly to improve the efficiency of quarrying?
The rock drill is a kind of simple, convenient and economic driving machinery, widely used in road construction, infrastructure construction, mining and other industries, is an important stone mining machine. The impact of drilling machine belongs to the equipment, at the same time to oil and gas assisted with the use of a variety of media, on the one hand on the work of the equipment reliability and safety put forward higher requirements; on the other hand, but also to the equipment operation and maintenance of certain difficulties. Scientific use and maintenance of rock drill not only have important significance to ensure safety in production and prevent the occurrence of malignant accidents, but also have important significance to improve the service performance, work life and production efficiency of equipment.
Preparation before start up
1, the newly purchased rock drill, the internal coating with a large viscosity rust proof grease, must be removed before use clear. When reloading, Mina shall lubricate the moving parts. After installed will drill through compressor pipeline, open wind operation, check the operation is normal.
2, the automatic lubricator into the oil, commonly used lubricants for 20#, 30#, 40# oil. Containers for lubricating oil shall be clean, covered and protected from rock powder and dirt.
3 、 check the wind pressure and water pressure at the working place. Wind pressure is 0.4-0.6MPa, excessive wind pressure will speed up the damage of mechanical parts, too low will reduce drilling efficiency and corrosion of machinery parts. Water pressure is generally 0.2-0.3MPa, water pressure is too high, water will be injected into the machine, damage lubrication, reduce drilling efficiency and corrosion of machinery parts; too low, poor flushing effect.
4, the use of Qianzai whether meet the quality requirements, prohibited the use of substandard qianzai.
5, the wind pipe connected to drill, will blow off the dirt should be deflated. Connect the water pipe money, be waterproof, flush the dirt at the joint, the wind pipe and water pipe must be tightened, in case of falling off, wounding.
6, the drill shank is inserted into the head, forced the clockwise rotation of the drill. If we can not move, that the machine has jammed phenomenon, should be timely treatment.
7, tighten the connecting bolts, open air, check the operation of the propeller, the normal operation, can begin to work.
8, the guide type rock drill should be equipped with a good prop, and check the operation of the thruster. The pneumatic leg rock drill and upward type rock drill must check the flexibility of its air leg.
9, hydraulic drilling machine should require good sealing system, to prevent hydraulic oil pollution, to ensure that hydraulic oil has a constant pressure.
Precautions at work
1, eyes should be slow rotation, until the depth of the hole arrived at 10-15mm, and then gradually transferred to full operation. In the course of drilling, the drill rod should be designed in accordance with the hole position, and the drill rod is straight forward and located at the center of the hole.
2, rock drilling should be reasonable test shaft thrust. Axial thrust is too small, the machine size of vibration increases, the drilling efficiency is reduced; axial thrust greatly, Qianzai tightening the fundus, the machine operates under the overload, premature wear parts, the drilling speed slows down.
3, rock drilling machine should be reduced when the shaft thrust, you can gradually become normal. If it is invalid, it should be stopped immediately. First use the wrench slowly rotating the drill rod, and then open the pressure Qianzai slowly rotating, forbidden processing with beating rod method.
4, often observe the row of powder. When the row of powder is normal, the mud flows slowly along the orifice; on the contrary, it needs to blow holes forcefully. If you are still valid, should check the status of drill hole and shank, then check the water needle, replace the damaged parts.
5, pay attention to observe the oil reserves and oil production, adjust the amount of oil. It is easy to wear parts prematurely when working without oil. When the lubricating oil is too long, it will cause pollution to the work surface.
6, the operation should pay attention to the sound of the machine, observe its operation, find problems, timely processing.
7, pay attention to the drill working state, abnormal timely replacement.
8, the operation of upward drilling machine should pay attention to the gas supply of the air leg, prevent rock drill from swinging up and down, resulting in accidents. The supporting leg of the pneumatic leg should be reliable. Hold the machine can not be too tight, more can not ride on the gas legs, in order to prevent wounding machine.
9, pay attention to the rock condition, avoid perforation along the bedding, joints and fissures, forbid to hit the residual eye, and observe the danger of falling roof and the piece at any time.
10, use the opening function effectively. In the drilling process, there is an important part of the opening, the opening is to reduce the impact pressure and fixed thrust pressure to complete. The propulsion pressure should be as small as possible in order to allow openings on very steep rock surfaces and to avoid bending of the drill pipe.
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