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At present, the aircraft has successfully completed industrial tests at the 2221 working face of Suncun Mine. The industrial test proves that the machine is driven by multiple motors, the motor is arranged horizontally, easy to use and easy to maintain. It has small starting current, large starting and accelerating torque, frequent starting and braking, and can realize regenerative braking. Working face with a maximum inclination of 45 degrees. In the actual application of the 2221 working face of Suncun Mine, the 3.6-meter-thick coal seam was fully harvested at a single high, with an average daily output of more than 3,000 tons, achieving safe and stable production and high efficiency, and the recovery rate of the working surface was increased to 98%.
The MG300/700-WD four-quadrant switched reluctance chainless electric traction shearer jointly developed by Shandong Xinwen Mining Group, China National Mining University and Wuxi Shengda Machinery Manufacturing Co., Ltd. passed the Shandong Provincial Section on October 22nd. Expert evaluation of the organization. Experts believe that the shearer can effectively mine coal seams with medium and hard angles and above, and its technical indicators have reached the international advanced level.