Press-locked grating
A press locked grating, in particular for use as a shelf for plate or heavy-duty shelves, has two longitudinal sides and cross members and longitudinal members having an I-shaped profile arranged between the longitudinal sides and at right angles to each other. The longitudinal members are inserted or pressed into punched holes of the cross members open towards the grating upper side. The longitudinal sides are formed in cross-section as a profile that includes at least first and second orthogonal legs. Each cross member has a punched hole at each end, in which the first leg is arranged and firmly connected thereto by a connecting method. The first leg is inserted or pressed into the punched hole, thereby achieving a first connection of the profile to the cross member, and has at least one deformation, thereby fixing the insertion or press connection of the cross member to the profile.
1. A press locked grating comprising:
two longitudinal sides;
a plurality of cross members arranged between the two longitudinal sides, each cross member of the plurality of cross members having an I-shaped profile, a plurality of first punched holes which are open toward an upper side of the press locked grating and second punched holes at a first end and a second end of the cross member; and
a plurality of longitudinal members arranged between the two longitudinal sides and at right angles to the plurality of cross members, each longitudinal member of the plurality of longitudinal members having an I-shaped profile and being inserted or pressed into a respective first punched hole of the plurality of first punched holes;
wherein each longitudinal side of the two longitudinal sides is formed in cross-section as a profile comprising at least a first leg and a second leg arranged substantially at a right angle to the first leg;
wherein the first leg of the profile of each longitudinal side of the two longitudinal sides is inserted or pressed into a respective second punched hole along a transverse direction to achieve a first connection of each profile with the cross members; and
wherein the first leg of the profile of each longitudinal side of the two longitudinal sides comprises a plurality of pairs of deformations that extend upwardly from the first leg of each longitudinal side respectively, the plurality pairs of deformations are subsequently introduced, after insertion of each first leg of each profile into the respective second punched hole, to a right and left in an immediate proximity or directly next to a plug-in or press connection of a corresponding cross member from the plurality of cross members with each profile respectively, thereby preventing a horizontal displacement of each longitudinal sides relative to the respective cross members along a horizontal direction that is perpendicular to the transverse direction and fixes the plug-in or press connection of the respective cross members with each profile of each longitudinal side respectively.
2. The press locked grating according to claim 1 , wherein the profile is designed as at least one of a Z-profile comprising a third leg arranged substantially parallel to the first leg and a connecting part connecting the first leg and the second leg, an L-profile comprising the first leg and the second leg arranged substantially perpendicular to the first leg, and a polygonal profile comprising the second leg arranged substantially parallel to the first leg, a connecting part connecting the first leg and the second leg, and a third leg arranged substantially parallel to the connecting part, the third leg being connected to a free end of the second leg.
3. The press locked grating according to claim 1 , wherein the press locked grating comprises steel, stainless steel or aluminum.
4. The press locked grating according to claim 1 , wherein a ratio of a bearing load of the press locked grating to a dead weight of the press locked grating is in a range of 10 to 200.
5. The press locked grating according to claim 1 , wherein at least 70% of an area covered by the press locked grating is a free projection area.
6. The press locked grating according to claim 1 , wherein at least one of the second punched holes has an inlet contour with at least one baffle and enables a centered insertion and at least one of a force-fit and a form-fit connection of the first leg of the profile with the cross member.
7. The press locked grating according to claim 1 , wherein the second punched holes are wedge-shaped.
8. A method of manufacturing a press locked grating comprising the steps of:
providing two longitudinal sides;
providing a plurality of cross members that are arranged between the two longitudinal sides, each cross member of the plurality of cross members having an !-shaped profile, a plurality of first punched holes which are open toward an upper side of the press locked grating and second punched holes at a first end and a second end of the cross member; and
providing a plurality of longitudinal members that are arranged between the two longitudinal sides and at right angles to the plurality of cross members, each longitudinal member of the plurality of longitudinal members having an I-shaped profile;
inserting or pressing each longitudinal member into a respective first holes of the plurality of first punched holes;
wherein each longitudinal side of the two longitudinal sides is formed in cross-section as a profile comprising at least a first leg and a second leg arranged substantially at a right angle to the first leg;
inserting or pressing each first leg of the profile of each longitudinal side of the two longitudinal sides into a respective second punched hole along a transverse direction to achieve a first connection of each profile with the cross members; and
wherein the first leg of the profile of each longitudinal side of the two longitudinal sides comprises a plurality of pairs of deformations that extend upwardly from the first leg of each longitudinal side respectively;
subsequently introducing the plurality pairs of deformations to a right and left in an immediate proximity or directly next to a plug-in or press connection of a corresponding cross member from the plurality of cross members with each profile respectively, after insertion of each first leg of each profile into a corresponding punched hole, thereby preventing a horizontal displacement of each longitudinal sides relative to the respective cross members along a horizontal direction that is perpendicular to the transverse direction and fixes the plug-in or press connection of the respective cross members with each profile of each longitudinal side respectively.