A pull-out storage box, comprising a pull-out box and a pull-out frame, wherein the pull-out box is of a hollow structure and has an upward opening;
- the pull-out frame comprises an upper plate, a lower plate, and a plurality of support beams comprising two side beams and two rear beams;
- the upper plate and the lower plate are provided with two pairs of first insertion grooves, each pair of first insertion grooves including one first insertion groove on the upper plate and one opposing first insertion groove on the lower plate, one of the two pairs of first insertion grooves being disposed at left ends of the upper plate and the lower plate, and another of the two pairs of first insertion grooves being disposed at right ends of the upper plate and the lower plate;
- and the upper plate and the lower plate are provided with two separated pairs of second insertion grooves at rear ends of the upper plate and the lower plate, each pair of second insertion grooves including one second insertion groove on the upper plate and one opposing second insertion groove on the lower plate;
- when an upper end and a lower end of each of the side beams are respectively inserted into the corresponding pair of first insertion grooves, and an upper end and a lower end of each of the rear beams are respectively inserted into the corresponding pair of second insertion grooves, the pull-out frame forms an integrated frame structure;
- and the pull-out box is located on the lower plate and capable of sliding into or out of the frame structure;
- wherein the pull-out box and the pull-out frame are both of a rectangular structure, the two side beams and the two rear beams are four support beams that all have the same structure, planes where the two pairs of first insertion grooves are located are parallel to each other, the two pairs of second insertion grooves are located in a same plane, and the plane where each pair of first insertion grooves is located is orthogonal to the plane where the two pairs of second insertion grooves are located;
- wherein the pull-out box comprises a bottom plate and a side portion, the bottom plate is of a planar structure, the side portion is of a vertically through structure, and the bottom plate and the side portion are connected by insertion fit and enclose to form the pull-out box as an integrated box body with the upward opening of the pull-out box;
- wherein the side portion comprises a front plate and a rear plate arranged symmetrically front and back, and a left plate and a right plate arranged symmetrically left and right;
- front and rear ends of the left plate and the right plate are each provided with a strip-shaped clamping groove, and left and right ends of the front plate and the rear plate are each provided with a strip-shaped clamping strip matching the strip-shaped clamping groove;
- and when all the strip-shaped clamping strips are inserted into the corresponding strip-shaped clamping grooves from openings of the corresponding strip-shaped clamping grooves, the front plate, the left plate, the rear plate, and the right plate are sequentially connected and enclose to form a vertically through rectangular structure;
- wherein a side wall of each strip-shaped clamping groove is provided with a through hole, and a side wall of each strip-shaped clamping strip is provided with a wedge block matching the through hole of the corresponding strip-shaped clamping groove;
- and when each strip-shaped clamping strip is inserted into the corresponding strip-shaped clamping groove from the opening of the corresponding strip-shaped clamping groove, the corresponding wedge block extends into the corresponding through hole and a flat surface of the corresponding wedge block is limited by a side edge of the corresponding through hole.