Recently, North Heavy Industry designed and manufactured the EQC6330 coal road full-face roadheader designed and manufactured by Shandong Energy Xinwen Mining Group to complete the assembly and commissioning of the workshop, and passed the customer's acceptance of the electro-hydraulic liquid systems. At present, the equipment is undergoing inspection of the coal safety machine, and it is expected that the dismantling and delivery work will be completed in April.
Northern Heavy Industry EQC6330 coal road full face tunneling machine
EQC6330 coal road full-face roadheader is a large-diameter full-face roadheader independently developed by Northern Heavy Industry and has complete independent intellectual property rights and is applied to the construction of large buried depth and long-distance coal mine rock roadway. Since 2014, the company has developed the world's first coal mine rock road full-face roadheader for Huainan Mining Group. Since the new construction of coal roadway construction, new construction methods and new technology upgrades have been started, Northern Heavy Industry has accumulated a deep experience in the application of TBM in coal mine roadway construction. Solid technical foundation, constantly leading the world's leading edge scientific and technological innovation in the construction of coal tunnels.
The excavator has a diameter of 6.3m, a total length of 86m, a cutterhead drive power of 1800kW and a maximum propulsion speed of 100mm/min. It is deeply customized and developed on the basis of the open TBM roadheader to adapt to coal mine transportation and roadway. The requirements of special construction conditions such as tunnel support integrate the functions of excavation, slag, support, dust removal, ventilation, guiding and explosion-proof technology. Due to the rock-breaking mechanism of the disc hob, the full-section cutterhead is used to break the rock into a hole at one time, and the excavation speed of the equipment can reach 500-800 m/month, and the work efficiency is improved by 4-6 times compared with the traditional drilling and blasting method or the comprehensive excavation machine, which is significantly improved. The construction efficiency of coal mine rock lanes shortens the construction period of coal mines and improves the construction intensity and working environment of workers.
Due to the special size and weight requirements of the cages in the mining area, the designers put forward a targeted solution in the product design to ensure that the size and weight of each component can meet the requirements of the downhole, thus achieving the sub-block downhole and the assembly in the hole. According to the construction requirements, the designers creatively adopted a special design method of the main beam under the roof to solve the construction problem that the support bolt must pass through the center line of the tunnel section. This technology is the first in the domestic TBM engineering field. Two hydraulic bolt rigs are installed in the front of the main beam of the roadheader. The rig torque is more than 400N·m, and the maximum drilling depth of the single pole is 2.5m, which realizes the bolt support in the 240° area at the top of the roadway. The axial translation cylinder keeps the anchor rig in a relatively fixed position during the excavation process. For the first time, the drilling and boring support is realized, which solves the problem that the past support speed cannot keep up with the boring speed. In order to ensure that the drive system has sufficient torque and power reserve, the equipment adopts a three-row roller heavy-duty bearing with a diameter of 3.6m, and is equipped with five 360kW inverter motors with a maximum power of 2300KW, which is the installed power of the same type of products in China. most.
The advanced design concept and method make the equipment have the adaptability of roadway excavation construction with traditional construction method. The maximum construction slope can reach ±10°, the minimum turning radius is 200m (the smallest in China), and it can meet the 40-200MPa rock. Hardness construction. Under the traditional method, when the hardness of the surrounding rock exceeds 80 MPa, the cantilever type comprehensive excavator can not be used for construction, and the full-face tunneling machine has no obstacle under such working conditions, and realizes a revolutionary breakthrough in the construction process of the roadway.
The successful development and market application of the EQC6330 coal road full-face roadheader marks that the North Heavy Industry Shield machine products keep up with the demand of the hot market, research and development of new coal industry construction equipment, and the implementation of differentiated competition strategy has taken important steps. With the rich application of the coal roadway full-face roadheader market in our company, it will further strengthen the awareness and confidence of users in the coal mine industry for such new products. In the next step, we will increase investment in research and development of coal mine roadway boring machine, and develop new products that are safer, more reliable, and more intelligent. At the same time, we will take the initiative to seize the market and establish a brand in the field of coal construction, firmly occupying the market. Competitive advantage. (This article comes from the North Heavy Industry)