The invention discloses a
grinding device for
petroleum pipeline end openings. The
grinding device comprises an electric push rod, a pushing plate, a sliding block, a first motor, a motor shell, a first bearing, a first rotating shaft, a limiting block, a friction block, an adjusting rod, limiting holes, a limiting nut, a limiting bolt, a supporting rod, a second bearing, fixing supporting feet, agrinding
machine shell, a second motor, a belt, a first fixing rod, a first rotary table, second rotary tables, a
grinding belt, second fixing rods, third bearings, third rotary tables, fourth bearings, a moving cavity, a fourth rotary table, a second rotating shaft and a third rotating shaft. The grinding device is designed for grinding the
petroleum pipeline end openings and has the functions of
surface grinding and inner cavity side wall grinding, and
welding slag, gaps and uneven places of the surface and the inner wall of a
petroleum pipeline can be uniformly eliminated.