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Affected by the financial crisis triggered by the US subprime mortgage crisis, China’s national economic development is bound to have a “soft landing†phenomenon. However, it should be noted that there are many factors affecting the development of the heavy mining equipment industry and the operation of the market. The most important ones are the state's macro-control policies on the development of basic industries and capital construction, as well as the requirements for economic and technological development of raw materials and civil facilities.
It is expected that the national fixed asset investment will continue to maintain a high growth rate in the future. During the “Eleventh Five-Year Plan†period, the state’s investment in infrastructure construction and pillar industries was unprecedented. Due to the large investment in infrastructure construction and pillar industries and long cycle, large-scale infrastructure projects invested in the “Eleventh Five-Year Plan†period, In particular, national key projects and key industrial projects will continue to be carried out, basically unaffected by changes in the economic environment; and with the introduction of the national stimulus domestic demand series, a number of new national large and medium-sized key projects are pending approval and commencement. It also guarantees the growth of fixed asset investment.
The development direction of China's mining equipment manufacturing industry
In the next 10 years, China's mining equipment manufacturing industry should aim at the development direction of large-scale, green and intelligent, and be in line with the world's advanced countries.
There are 9 major types of mining equipment urgently needed in China. The future market demand trend is: according to the actual situation of China's mining development, focus on the development of large-scale open-pit mining equipment, explosion-proof and low-noise small and medium-sized complete sets of equipment suitable for underground mining conditions, tunneling Modern large-scale equipment, streamlined crushing and grinding equipment, ultra-fine powder equipment and mobile washing equipment. It is estimated that 10 to 15 sets of open-air continuous mining equipment, including 3,100 tons/hour, 3,600 tons/hour and 6,000 tons, and three types of bucket wheel excavators will be provided, providing semi-continuous mining mainly based on mobile or semi-mobile crushing stations. 40 to 50 sets of equipment, providing 10 to 15 sets of complete sets of mining equipment, including 30 to 55 square meters of mechanical (or hydraulic) single bucket excavators and electric wheeled vehicles, providing 15 to 20 sets of underground mineless orbital mining equipment. It provides 20 to 25 sets of complete sets of equipment for large ore dressing plants, and provides 50 sets of 15 to 20 tons of charging vehicles and 150 sets of 150 to 200 kilograms of charging devices. The product should have the characteristics of safety, high energy saving and low pollution. It is widely used in remote automatic condition monitoring and control technology, and some products realize remote control and numerical control.
At present, the domestically produced Lu-fu mining equipment, such as the shovel, single bucket excavator and slope hoist, some still use the "DC generator continuous flow motor" speed control system. Although such a speed control system can basically meet the operational requirements of the equipment, there are disadvantages such as high failure rate of the DC motor, large maintenance workload, and low system efficiency. Therefore, the use of advanced speed control methods is imperative. Frequency conversion is one of the main development directions of modern electric drive. The excavator frequency conversion adjustment technology represents the highest level of electric drive technology in the excavator industry in the world today. It has the advantages that other speed control methods are difficult to compare in terms of automation of production process, improvement of product quality, convenient maintenance and energy saving. It is an ideal electric drive system for technical transformation and product upgrading of mining equipment. In order to make China's mining equipment catch up with the advanced level of foreign countries as soon as possible, we should actively adopt this advanced speed control system in the electrical control of products.
Over the past 30 years, the widespread use of scraper-centric railless mining equipment has revolutionized underground mining processes. A major advancement in changing the way the scraper is used is the application of robot technology. The long-distance remote-controlled scraper developed by the Changsha Mine Research Institute in China is operated by a scraper that controls the downhole working face in the well. Its technical performance has been rushed. On the advanced level of the world. The automatic control system of the scraper consists of a remote control system, a television camera and a monitoring telemetry system, and a digital measurement and storage system. The scraper is equipped with analog sensors (analog temperature, pressure, speed, steering angle, etc.) and digital sensors (display on/off, extreme position, violation alarms, etc.) to transmit various signals to the controller. The controller's functions are steering, speed control, shifting, bucket control and boom movement. The driver can monitor the automatic loading and transport of the scraper in the ground control room. It is expected that in the near future, in some downhole special working surfaces, this remote-controlled scraper will replace the traditional scraper. Since the beginning of this century, the underground mining face of advanced countries has been adapted from the traditional intermittent transmission system using scrapers and automobiles to the use of a large moving material vibrating conveyor (or belt conveyor) for mobile crushers. Development of continuous or semi-continuous process systems that transport raw ore directly to the wellbore. Therefore, the introduction and localization of advanced continuous or semi-continuous mining equipment will be the main direction of the development of underground mining equipment in the next 10 years. The first batch of key equipment is continuous mining equipment and continuous transportation equipment. 
The current situation and development trend of China's mining equipment industry
Favorable factors in the development of China's mining equipment industry