The future development trend of underground scrapers
Century is the era of rapid development of network and information, science and technology steam rapid development, economic construction is changing rapidly. To predict the development trend of underground scrapers throughout the century is very difficult, if not impossible. Here can only be based on the development of underground shovel machine in the past 4o years, the development trend of the next 20 years in the 21st century to make a prospect:
1, with the surface of the shallow mining resources increasingly depleted and impoverished, the expansion to the sea outside, the mining industry will gradually to the surface of the deep development. However, underground mines modern high efficiency trackless mining technology will still dominate, underground scrapers will still be the main equipment indispensable for trackless mining, but the constraints of environmental factors will be more severe and harsh. Large and medium-sized shovel is still the main object of development, narrow body small and micro shovel will still be developed accordingly
2, the existing models will use modern advanced technology to further improve and enhance, and to the direction of the integration of the machine an electric a letter.
① high-performance diesel engine with electronic control system will be commonly used;
② small scraper will be commonly used simple and effective positive rotation five-link working mechanism; large scraper will promote the fast and powerful Z-link working mechanism. According to different ore capacity and operating conditions, to provide different types and bucket capacity of the bucket, fast unloading multi-purpose operation tools and devices;
③Hydraulic mechanical transmission will generally adopt electric/hydraulic shift and electronic automatic shift, electronic shift selector and other electronic control technology. The drive axle fully adopts fully enclosed wet multi-disc brakes. The loss of pressure brake system using spring brakes will be more popular;
④ Hydraulic components performance will be further improved, hydraulic system pressure will also be further improved, and will attract electronic information control technology, there may be a hydraulic circuit module or integrated block of the integration of different functional modules of the hydraulic system more compact, reliable joints will be reduced to a minimum, the least amount of maintenance;
The new type of steel for the strength of the body and components makes the structure of the machine lighter and stronger. The new type of steel for the strength of the body and components makes the structure of the machine more compact and sturdy. The lubricating device is a new type of durable, reliable and high performance equipment. Adopt durable and reliable new high-performance supporting parts. Significantly improve the performance of the machine, maintenance workload will be reduced to a minimum;
(3) electric scraper will be further developed. In order to meet the increasingly harsh and demanding environmental requirements, with the adoption of new cables and cable reel system, dragging cable AC squirrel cage motor-driven electric shovel will be further developed; with the development of high-capacity high-energy battery, the same mobile and flexible battery type electric shovel with internal combustion shovel will show very good prospects;
(4) With the rapid development of electronic information technology and attraction, underground shovel automatic detection and fault diagnosis technology, remote control, program control and automation technology will be faster development, with artificial intelligence of the robot (automation) shovel will enter the commercialization stage, in the mine to be applied and promoted. Sitting in the ground control room to manipulate the underground shovel and other mining equipment for the automation of operations will become a reality;
(5) attach great importance to environmental protection and safety. The machine design and operating arrangements will pay more attention to the ergonomic requirements: fully enclosed, air-conditioned, anti-tip, anti-stone impact of the new cab and electronic monitoring instrument panel, sound and light signals, will create a comfortable and safe operating environment for the operator; equipment and pipeline arrangement is more reasonable, so that personnel are easy to access and maintenance; the use of new diesel engines, exhaust emissions and noise will be more in line with environmental requirements; dangerous, high temperature and toxic gases and other health hazards High temperature and toxic gas and other health and safety hazards of the operation will be widely used robot scraper and achieve automation. The country has introduced 234 underground scrapers of 8 types. This is the early stage of the development of China's underground scraper, as there was no home-made scraper, mainly relying on imported conditions. At present, the period of the introduction of the shovel machine due to the use of old, broken equipment, technology is old, have reached the retirement period, the vast majority have been scrapped.
Since the mid-80s, with the development of trackless mining technology in China and a number of new mines using trackless mining, the need for medium and large scraper has a growing trend, the introduction of different manufacturers, advanced technology of the new scraper nearly 300 units, which are mainly medium-sized scraper, there are also gold mines need for micro scraper.