Intelligent width-limiting warning column capable of being repeatedly used after column body is impacted

The invention discloses an intelligent width-limiting warning column capable of being repeatedly used after a column body is impacted, the intelligent width-limiting warning column mainly comprises a width-limiting column, a base, transverse telescopic rods and a fixing rod, the width-limiting column is installed on the base through the fixing rod, and the transverse telescopic rods are installed on the left side and the right side of the width-limiting column; a spherical groove is formed in the upper surface of the base, a semi-sphere is arranged in the spherical groove and fixed in the spherical groove, a semi-sphere shell is arranged at the bottom of the width limiting column, a warning device is mounted at the top of the width limiting column, a fixing rod mounting hole is formed in the center of the width limiting column, and the fixing rod mounting hole is formed in the axis position of the width limiting column. The hemispherical shell at the bottom of the width limiting column is slidably mounted in