Reasonable trend analysis of anchor drilling machine for coal mine,

Analysis of Rationality Trend of Coal Mine Use

With the improvement of productivity in China, the application of various machines in China is gradually increasing. Anchor drill is not only needed in geotechnical engineering, but also widely used in coal mines. Only state-owned key coal mines have more than 3000 tunneling faces every year. The construction of bolt support needs a considerable number of bolt rigs, and the market demand makes many scientific research and manufacturing units invest in the research and development and production of bolt rigs and their supporting machinery. There are many kinds of products, and similar products appear repeatedly and are repeatedly identified. Bolt drilling machine is the objective need of the development of bolt support technology, which will inevitably develop according to certain laws, and will gradually get on the right track after a period of competition. Through the analysis of domestic and foreign anchor drilling rigs, it is considered that the development trend of coal mine anchor drilling rigs will have the following characteristics:

(1) Because the coal mine bolt support will be widely used in coal roadway and semi-coal roadway in a large number of areas, single bolt drilling machine will be the mainstream of bolt drilling machine product development for a long time. In some roadways where comprehensive roadheader is used, hydraulic single anchor drilling rig will be gradually adopted, and the hydraulic power source of roadheader will be used. In order to further improve the mechanization level of bolt support for fully mechanized mining equipment, we will continue to explore how to widely use airborne bolt drills. The airborne anchor drilling rig is still mainly hydraulic rotary drilling rig, but it will still seek a reasonable drilling method to solve the problem of drilling rocks with high compressive strength and strong abrasiveness. In the excavation of large-section rock roadway, the use of hydraulic drilling rig will show advantages in drilling anchor holes and installing anchor rods, but the application of special anchor drilling rig will not be put on the agenda in the short term.

(2) The hydraulic rotary anchor drilling rig will develop in the direction of further increasing the output torque to meet the needs of drilling anchor holes and installing anchor rods at high speed. Hydraulic anchor drilling machine will further improve its technical performance and reliability, focus on solving the durability of hydraulic components and the long-term stability of underground work, and seek how to use power source together with existing underground equipment. In order to make hydraulic drilling anchor holes more applicable, people will discuss the combination of high torque rotation and low energy impact drilling anchor holes.

(3) Pneumatic anchor drilling rig has good torque-speed characteristics, light weight and large stall torque, but product reliability and product quality stability will attract more attention in a period of time. In order to use pneumatic anchor drilling rig more widely, the compressed air system will be adjusted consciously in coal mine site, and the application of underground mobile air compressor will be paid more and more attention.

(4) The electric anchor drilling rig has low cost, simple main engine power and low energy consumption. People will continue to tackle key problems in improving the reliability of electric anchor drilling rig and reasonably solving the outrigger mode. Aiming at the problems of hard torque characteristics and poor motor reliability of electric anchor drilling rig, when pressurized water is used to flush anchor holes, the key to motor reliability will be overload capacity and waterproof sealing performance. Only by fundamentally solving these two problems can the electric anchor drilling machine be more widely used in underground operation.

(5) Pneumatic impact anchor hole drill is used together with pneumatic rotary anchor hole drill and pneumatic rotary anchor hole drill (to help anchor hole drill), and the underground power system is single and the effect is good. People will further improve the pneumatic percussion drilling method to better match the pneumatic rotary drilling method.

(6) The drilling tools used for rotary drilling anchor holes are high-consumption wearing parts. With the standardization of anchor drilling machine products, the performance and quality of drilling tools will be paid more attention, the structure, materials and processing technology of drilling tools will gradually become reasonable, and the application scope of rotary drilling method will be expanded.

(7) The further development of anchor drilling machine requires further improvement of the standardization level of anchor drilling machine and its supporting machines. In this technology, product competition will be mainly in terms of quality, service and price. Therefore, some anchor drilling rig and drilling tool manufacturers will make great efforts in scientific management and gradually implement ISO 9000 family standards consciously to make their products more competitive.

(8) The research on performance parameters of anchor drilling rig is the basis of product development and quality control of anchor drilling rig. The competition of several products will gradually improve the understanding of the importance of basic research of anchor drilling machine. In the competition of anchor drilling machine products, manufacturers will compete for technology, talents and conditions.

(9) The development of anchor drilling rig has certain technical difficulties, and its application effect is related to the field use and maintenance conditions. The coal mine site will seek to apply the scientific management method of anchor drilling machine, attach importance to and strengthen the maintenance of anchor drilling machine, and establish the maintenance point of anchor drilling machine.

(10) The level and quality of anchor drilling rig affect the comprehensive benefits of anchor support. The comprehensive economic benefits of using anchor drilling rig and drilling tools in coal mine site will be paid more and more attention, and will be used as an important basis for selecting anchor drilling rig and drilling tools.