| 摘要 |
The invention relates to a change-over frame for individual panels of concealed precast floors. The essence of the invention consists in that the frame comprises a U-profile which encloses the panel on three sides at the upper edges and engages, with its lower leg, into lateral guiding grooves of the panel, whereas the fourth (push-in) side of the frame is formed by a flat strip, that the two frames sides connected to the flat strip and the floor panel are shorter, above the latter's lateral guiding grooves, than the flat strip and the frame side opposite the latter, by the width of the carrying foot of the carrying rails, and that an advancing angle bolt is arranged in each case in the frame corners opposite the flat strip. <IMAGE>
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