Rapidly assembled tabletop support

1. A rapidly assembled tabletop support, comprising cross members and a stringer perpendicular to the cross members, wherein locking mechanisms are fixed on the cross member; the stringer is provided with steps and necks corresponding to the steps; by pushing the stringer to move relative to the cross members, the stringer and its steps are closely matched with a tube wall of the cross member, and the locking mechanism is engaged into the neck on the stringer, realizing rapid engagement between the cross members and the stringer; and

wherein the step comprises a kick section, a tread section, and a guide section which are connected end to end, and the kick section of the step is closely matched with the tube wall of the cross member under a guidance of the guide section.

2. The rapidly assembled tabletop support according to claim 1 , wherein the locking mechanism comprises a spring piece, and the locking mechanism is fixed on the cross member by using fixed members or by welding.

3. The rapidly assembled tabletop support according to claim 2 , wherein each locking mechanism comprises a connecting section and a folding section, and the folding section is connected to the cross member through the connecting section; the folding section is provided with an ejection part which comprises a peak part and a guide part which are connected end to end, and the peak part is ejected from a first through-hole under a guidance of the guide part.

4. The rapidly assembled tabletop support according to claim 2 , wherein the cross member is provided with second through-holes, and a connecting section is provided with third through-holes; the cross member and the locking mechanism are installed and fixed by inserting a blind rivet into the second through-hole and the third through-hole in sequence.

5. The rapidly assembled tabletop support according to claim 1 , wherein the locking mechanism is integrated with the cross member and is the part of the cross member.

6. The rapidly assembled tabletop support according to claim 1 , wherein there are two cross members which are arranged along the length direction of the tabletop support and symmetrically distributed left and right, and there are connecting rods inside the two cross members which are respectively fixed with the corresponding ends of the connecting rods after the distance between the two cross members is determined, realizing an adjustable length of the tabletop support.

7. The rapidly assembled tabletop support according to claim 6 , wherein each cross member has two square tubes symmetrically distributed back and forth which are fixed and connected through longitudinal connecting plates, and the two square tubes and the longitudinal connecting plates are assembled to form one cross member.

8. A rapidly assembled tabletop support, comprising cross members and a stringer perpendicular to the cross members, wherein locking mechanisms are fixed on the cross member; the stringer is provided with steps and necks corresponding to the steps; by pushing the stringer to move relative to the cross members, the stringer and its steps are closely matched with a tube wall of the cross member, and the locking mechanism is engaged into the neck on the stringer, realizing rapid engagement between the cross members and the stringer; and

wherein each locking mechanism comprises a connecting section and a folding section, the folding section is connected to the cross member through the connecting section; the folding section is provided with an ejection part comprising a peak part and a guide part which are connected end to end, and the peak part is ejected from a first through-hole under a guidance of the guide part.