Three-dimensional workspace boundary safety alarm device

The invention relates to the technical field of warning devices, in particular to a three-dimensional working interval boundary safety warning device which comprises a supporting component, a warning component, a warning component, a warning component, a warning component, a warning component, a warning component, a warning component, a warning component and a warning component. The supporting component comprises four balance weight bases, mounting sleeves and lifting columns, the mounting sleeves are arranged on the balance weight bases, and the lifting columns are arranged in the mounting sleeves. The infrared transmitters and the infrared receivers are arranged on the side walls of the lifting column and the mounting sleeve; the unfolding part comprises a protection assembly arranged on the mounting sleeve, a guide assembly arranged on the lifting column and an elastic assembly arranged on the mounting sleeve; the limiting component comprises a sliding assembly arranged on the mounting sleeve, an anti-skid