Large-angle adjusting structure of pneumatic steering column of commercial vehicle

The invention relates to a large-angle adjusting structure for a pneumatic steering column of a commercial vehicle, which comprises a fixed support, a height adjusting bracket, an adjusting assembly, an angle adjusting bracket and a locking assembly, and is characterized in that the fixed support is provided with a chute group, and the chute group comprises two oppositely arranged guide chutes; the height adjusting support is located between the two guide sliding grooves of the sliding groove set. The adjusting assembly is connected with the height adjusting support, and the two ends of the adjusting assembly are arranged between the two guide sliding grooves of the sliding groove set in a sliding mode; one end of the angle adjusting bracket is rotationally connected with the height adjusting bracket, and the other end is provided with an angle adjusting slideway for the adjusting assembly to pass through; the locking assembly is connected with the adjusting assembly and used for locking or unlocking the heig