Coal mining machine for lump coal mining and coal mining method

• Main Authors: DENG GUANGZHE, SHEN HANXING
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2014
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; MINING OR QUARRYING

The invention discloses a coal mining machine for lump coal mining and a coal mining method. The coal mining machine comprises a body and a cutting part arranged on the body, wherein the number n of helical blades arranged on a drum of the cutting part is more than D/P, the helical angles of the helical blades are 5-30 degrees, and D and P refer to the width and pitch of the helical blades, respectively; the number m of cutting picks arranged on each helical blade is determined by the hardness coefficient f of a mined coal seam; when the hardness coefficient f of the mined coal seam is 2.5-3.5, m is equal to 7-10; when the hardness coefficient f of the mined coal seam is more than 3.5, m is equal to 9-17; the mining method comprises the following steps of 1, setting mining process parameters, namely setting the rotating speed of the drum, traction speed, cutting thickness, the rotating direction of the drum and cutting depth; and 2, mining the coal seam in a unidirectional coal cutting manner. The coal mining