Fully mine spec'd and ready to work. The working device is greatly strengthened to improve the service life under the condition of large bucket capacity; the new design of the structure of the lower carriage adopts the enhanced tensioning device and heavy driving wheel to enhance the operation stability and service life under the adverse conditions. According to the working condition of the mine, the structural strength of the cab is increased by 5 times, the noise is reduced by 5 dB, the safety and comfort of operation are greatly improved; the replacement of maintenance parts is convenient, the maintenance period is extended by 1 time, and the maintenance cost of products is reduced by 50%.
