04
2022
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07
Structural Characteristics and Mining Application Analysis of Different Types of Drill
Coal mine production and tunnel construction need to excavate rock stratum, but with the application of hydraulic rock drill in the excavation process, the cross-sectional area and length of the drill bit increase, and its working situation is becoming more and more complex, which limits the different structure and application scope of the drill bit in the application. Therefore, reasonable drill bit must be used in the application to ensure the smooth construction, especially the development of composite drill bit promotes the development of the device, let's learn about the structural characteristics of different types of drill bits and the analysis of mining applications!
Coal mine production and tunnel construction need to excavate rock stratum, but with the application of hydraulic rock drill in the excavation process, the cross-sectional area and length of the drill bit increase, and its working situation is becoming more and more complex, which limits the different structure and application scope of the drill bit in the application. Therefore, reasonable drill bit must be used in the application to ensure the smooth construction, especially the development of composite drill bit promotes the development of the device, let's learn about the different types below.Drill bitThe structural characteristics and mining application analysis!
1. Application of rock drilling bit
The drill bit plays an important role in both coal mining and tunnel construction, and is an essential tool and consumable for drilling and blasting. The drill bit is composed of a structural drill bit and a connecting rod. The drill bit must be in direct contact with the rock and bear the impact of high speed and pressure. The single impact energy release is very huge, and the drill bit is easy to fail in high-intensity work. The wear and deformation of the drill bit is a common situation, including alloy shedding, plastic deformation, fracture and so on. Therefore, the cutter head must be matched in form and material to meet the needs of different working conditions in order to greatly extend the application life of the cutter head and the rock drilling effect. Since the cutter head is a vulnerable device, controlling its vulnerable quantity is also an important measure to control costs. In order to meet the needs of the actual situation, the cutter head must have reasonable structure, suitable shape, high working efficiency, wear resistance, mechanical strength and powder discharge performance. In recent years, the cutter head generation technology has made great progress, forming a cutter head form that adapts to different rock formations and improves production efficiency.
2. Rock drillingDrill bitStructural features of the median
The bit is mainly divided into two parts: the bit rod and the bit rod. The bit rod is an important transmission structure connecting the power equipment and the bit rod, so the influence of the bit rod on the whole bit rod is also very important. The drill pipe is usually made of hollow steel through heat treatment and other processes, mainly with vertebral connection drill pipe, threaded connection drill pipe and integral drill pipe and other structures. The drill rod has simple structure, convenient maintenance, and small consumption of the drill rod, but the impact stress causes the drill rod to consume a large round trip energy, the connection is easy to damage, and it is not used much in China. Threaded connecting rods usually use r threads, HL threads, t thread connecting rods, etc., but t threads have high reliability, good energy transmission effects, easy maintenance, and long life.
3. Characteristics and application effects of different types of cutter heads
Bit one word structure, this kind of cutter head is used earlier in China's production, and it is also widely used. The working part of the drill bit is a straight carbide cutter head, which has been proved to be simple in structure, convenient in processing, low in cost, and suitable for rock formations with high integrity, so it is widely used in the production and excavation process. However, it has certain defects: the drill bit has low strength, fast wear and easy jamming, and the drill bit itself is damaged frequently, which affects the progress. The working part of the cutter head is an arc, and the blade arc and blade height are too large, which is easy to be scrapped if damaged. The drill bit structure, this type of cutter head is developed on the basis of the original straight shape, and its cutter head structure belongs to the form of discontinuous low-edge structure. Since the advent of the three-edge cutter head, companies in many countries have been carrying out research and development. Three-edge cutter heads based on the basic structure have been successively introduced in the 1980 s. China independently developed three-edge cutter heads, summed up experience in production and formed a series of products.
In the production and construction of coal mine tunnels,Drill bitIt is an important construction equipment, but according to the different excavation and production conditions, different drill bits have unique adaptability. Appropriate tools must be selected according to the specific situation to ensure the efficiency and cost reduction of excavation. The analysis results show that different periods and different forms of cutter heads have different advantages, but the composite cutter head with the advantages of various cutter heads has become a new trend of popularization and research and development.
The above introduction is the structural characteristics of different types of drill bit and mining application analysis, if you need to know more, you can contact us at any time!
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