Angle-adjustable three-column

The utility model relates to an angle-adjustable three-column, which comprises a middle column, a left column and a right column, two sides of the middle column are respectively provided with a left connecting plate and a right connecting plate, the left column and the right column are respectively connected with a left connecting rod assembly and a right connecting rod assembly, the left connecting plate is provided with a left chute, and the right connecting plate is provided with a right chute. The left connecting rod assembly is provided with a left limiting bolt, the right connecting rod assembly is provided with a right limiting bolt, the left limiting bolt is located in the left sliding groove and moves along the left sliding groove, and the right limiting bolt is located in the right sliding groove and moves along the right sliding groove. The angles of the left stand column and the right stand column can be adjusted with the middle stand column as the center, and the requirements for various space si