The use of the
air leg rock drill is the same as that of other rock drill tools, and even more so. Its small fuselage, long life, high safety and energy saving. As far as my country's overall rock drill tool market is concerned, its varieties and specifications are relatively complete, which is one of the main reasons for the popular use of air leg rock drills. Therefore, the maintenance of the air leg rock drill is extremely important.
Maintenance of
air leg rock drill
1. Lubricating oil:
Lubrication has a great influence on the performance and service life of machinery. Oil-free operation is strictly prohibited. It is best not to use grease for lubrication to avoid blocking the machine holes and blocking gas flow, thereby reducing machine efficiency and accelerating parts wear.
2. Trachea and air pressure:
① Trachea
The internal diameter of the trachea is 25 mm. In order to avoid excessive pressure loss of the pipeline, the length of the trachea from the air source to the machine does not exceed 15 meters, and the diameter of the pipeline joint is not less than 20 mm.
② Air pressure
The working air pressure of the
air leg rock drill is one of the factors that directly affect the rock drilling efficiency, economic effect and the service life of parts. Rock drilling speed increases with the increase of air pressure, but the air pressure is too high, the vibration of the machine is also large, it is easy to damage the drill, and the parts are also worn fast; the air pressure is too low to fully exert the efficiency of the machine. Therefore, the working pressure of the machine is generally 0.4 ~ 0.63Mpa.
3. Water pipes and water pressure
The gas pipe diameter of the
gas leg rock drill is 13 mm. The working water pressure should be lower than the working pressure. Excessive water pressure can easily cause the failure of the gas-water linkage structure, and even "wash hammer", damage the lubrication of the machine and other disadvantages. The general working pressure of water pressure is 0.2-0.3 MPa.
4. Drill rod
The rock drilling efficiency and the service life of the parts of the
air leg rock drill have a great relationship with the early quality of the drill rod. It is best to use the standard hollow hexagonal drill rod (GB6481-86). The manufacture and use of the drill rod should meet the following requirements: ① The hardness of the end face of the drill rod is most suitable for HRC49-45. ② The end face of the drill tail should be flat and perpendicular to the axis of the drill rod, and the chamfering angle should not be too large. ③ The axial deviation of the pinhole of the brazing tail water is not allowed to exceed 1 mm, and the hole diameter and hole depth should meet the requirements.
